/* ============================================================
   NovelaMatch — Jewelry Turquoise & Crisp White Design System
   Fresh, luminous Tiffany-turquoise background with pure white typography
   ============================================================ */

:root {
    --bg: #74B2AD;
    --bg-deep: #61A19C;
    --surface: #64A49F;
    --surface-hover: #599994;
    --surface-elevated: #4E8E89;
    
    --text-primary: #FFFFFF;
    --text-secondary: #F0F7F6;
    --text-tertiary: #DBECEB;
    
    --accent: #FFFFFF;
    --accent-dark: #2F6460;
    --accent-gold: #FFE082;
    
    --border: rgba(255, 255, 255, 0.22);
    --border-strong: rgba(255, 255, 255, 0.4);
    --border-accent: rgba(255, 255, 255, 0.6);
    
    --ff-sans: -apple-system, BlinkMacSystemFont, "SF Pro Text", "SF Pro Display", "Helvetica Neue", Helvetica, Arial, sans-serif;
    --ff-serif: "Playfair Display", "Bodoni Moda", "Prata", Georgia, serif;
    --ff-script: "Allura", "Alex Brush", "Pinyon Script", "Great Vibes", cursive;
    
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 14px;
    
    --sp-1: 0.5rem;
    --sp-2: 1rem;
    --sp-3: 1.5rem;
    --sp-4: 2rem;
    --sp-5: 3rem;
    --sp-6: 5rem;
    --sp-7: 6.5rem;
    
    --max-w: 1160px;
    --transition: 180ms ease;
}

/* ─── Reset & Base ───────────────────────────────────────── */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    background-color: var(--bg);
}

body {
    font-family: var(--ff-sans);
    font-size: 1rem;
    line-height: 1.5;
    color: var(--text-primary);
    background-color: var(--bg);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

img {
    display: block;
    max-width: 100%;
}

button {
    font-family: inherit;
    cursor: pointer;
    text-transform: none;
}

a {
    color: inherit;
    text-decoration: none;
}

/* ─── Typography Hierarchy ───────────────────────────────── */
.display {
    font-family: var(--ff-serif);
    font-style: normal;
    font-weight: 600;
    font-size: clamp(3rem, 6vw, 4.6rem);
    letter-spacing: -0.015em;
    line-height: 1.12;
    color: #FFFFFF;
    -webkit-text-stroke: 0.35px rgba(255, 255, 255, 0.85);
    text-shadow: 0 2px 14px rgba(0, 0, 0, 0.12);
}

h1, .h1 {
    font-family: var(--ff-serif);
    font-weight: 600;
    font-size: 2.35rem;
    letter-spacing: -0.015em;
    color: #FFFFFF;
    -webkit-text-stroke: 0.25px rgba(255, 255, 255, 0.8);
}

h2, .h2, .section-header h2 {
    font-family: var(--ff-serif);
    font-weight: 600;
    font-size: 1.65rem;
    color: #FFFFFF;
    line-height: 1.3;
    text-transform: none;
    letter-spacing: -0.01em;
    -webkit-text-stroke: 0.25px rgba(255, 255, 255, 0.8);
}

h3, .h3 {
    font-family: var(--ff-serif);
    font-weight: 600;
    font-size: 1.3rem;
    letter-spacing: -0.01em;
    color: #FFFFFF;
}

/* ─── Layout ─────────────────────────────────────────────── */
.app-container {
    max-width: var(--max-w);
    margin: 0 auto;
    padding: 0 var(--sp-4);
}

/* ─── Navigation ─────────────────────────────────────────── */
.top-nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--sp-4) 0;
    margin-bottom: var(--sp-4);
}

.brand-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
}

.brand-logo-img {
    height: 38px;
    width: auto;
    object-fit: contain;
    filter: drop-shadow(0 2px 8px rgba(0, 0, 0, 0.12));
    transition: transform var(--transition);
}
.brand-logo:hover .brand-logo-img {
    transform: scale(1.05);
}

.brand-logo-text {
    font-family: var(--ff-serif);
    font-size: 1.55rem;
    font-weight: 600;
    letter-spacing: -0.01em;
    color: #FFFFFF;
    -webkit-text-stroke: 0.3px rgba(255, 255, 255, 0.85);
    text-shadow: 0 1px 4px rgba(0, 0, 0, 0.15);
    display: inline-flex;
    align-items: baseline;
}

.domain-tld {
    font-family: inherit;
    font-size: 1.22rem;
    font-weight: 500;
    color: rgba(255, 255, 255, 0.95);
    margin-left: 1px;
}

.nav-right {
    display: flex;
    align-items: center;
    gap: var(--sp-2);
}

.nav-pill-btn, .profile-switch-btn, .lang-switch-btn {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    padding: 6px 14px;
    background: rgba(255, 255, 255, 0.14);
    border: 1px solid rgba(255, 255, 255, 0.28);
    border-radius: 9999px;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-primary);
    box-shadow: 0 2px 8px rgba(27, 75, 72, 0.1);
    backdrop-filter: blur(8px);
    transition: all var(--transition);
    cursor: pointer;
}

.nav-pill-btn:hover, .profile-switch-btn:hover, .lang-switch-btn:hover {
    background: rgba(255, 255, 255, 0.24);
    border-color: rgba(255, 255, 255, 0.5);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(27, 75, 72, 0.16);
}

.nav-pill-btn:active, .profile-switch-btn:active, .lang-switch-btn:active {
    transform: scale(0.97);
}

.profile-avatar {
    font-size: 0.95rem;
    line-height: 1;
}

.arrow-down {
    font-size: 0.62rem;
    color: rgba(255, 255, 255, 0.7);
    margin-left: 1px;
    transition: transform var(--transition);
}

.lang-dropdown-wrapper { position: relative; }
.lang-dropdown-menu {
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    background: #599994;
    border: 1px solid rgba(255, 255, 255, 0.35);
    border-radius: 12px;
    padding: 6px;
    min-width: 155px;
    display: none;
    flex-direction: column;
    gap: 2px;
    box-shadow: 0 16px 36px rgba(22, 60, 57, 0.3);
    backdrop-filter: blur(12px);
    z-index: 120;
}
.lang-dropdown-menu.active { display: flex; }

.lang-option-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 7px 10px;
    background: none;
    border: none;
    border-radius: 8px;
    font-size: 0.85rem;
    font-weight: 400;
    color: #FFFFFF;
    text-align: left;
    width: 100%;
    cursor: pointer;
    text-transform: none;
    transition: background var(--transition);
}
.lang-option-btn:hover, .lang-option-btn.active {
    background: rgba(255, 255, 255, 0.22);
    color: #FFFFFF;
    font-weight: 500;
}
.lang-opt-flag { font-size: 0.95rem; }

/* ─── Hero / Header ─────────────────────────────────────── */
.app-header {
    padding: var(--sp-2) 0 var(--sp-6);
}

.hero-eyebrow, .hero-eyebrow-line {
    display: none !important;
}

.hero-layout {
    display: flex;
    flex-direction: column;
    gap: var(--sp-3);
    margin-bottom: var(--sp-5);
}

.hero-headline {
    max-width: 800px;
}

.hero-headline .display {
    margin-bottom: var(--sp-3);
    text-shadow: 0 2px 10px rgba(32, 94, 90, 0.25);
}

/* ─── Dynamic Rotating Word in Hero Headline ─────────────── */
.hero-prefix {
    font-size: 0.84em;
    font-weight: 400;
    opacity: 0.92;
    display: inline-block;
    letter-spacing: -0.01em;
}

.rotating-word-container {
    display: inline-block;
    position: relative;
    vertical-align: baseline;
    min-height: 1.15em;
}

.rotating-word {
    display: inline-block;
    color: #FFFFFF;
    font-style: italic;
    font-size: 1.06em;
    font-weight: 500;
    transition: opacity 1.1s cubic-bezier(0.4, 0, 0.2, 1);
    opacity: 1;
    will-change: opacity;
}

.rotating-word.anim-out {
    opacity: 0;
}

.rotating-word.anim-in {
    opacity: 0;
}

.hero-sub {
    max-width: 600px;
}

.welcome-heading {
    font-family: var(--ff-serif);
    font-size: 1.48rem;
    font-weight: 600;
    letter-spacing: -0.01em;
    color: #FFFFFF;
    -webkit-text-stroke: 0.25px rgba(255, 255, 255, 0.85);
    margin-bottom: 4px;
    text-shadow: 0 1px 4px rgba(0, 0, 0, 0.15);
}

.welcome-subtext {
    font-size: 0.95rem;
    color: var(--text-secondary);
}

/* ─── Bare Stats (3 Numbers Side-by-Side) ─────────────────── */
.stats-dashboard-card {
    background: transparent;
    border: none;
    box-shadow: none;
    padding: 0;
    display: flex;
    flex-direction: column;
    margin-top: var(--sp-2);
}

.stats-top-row {
    display: flex;
    align-items: baseline;
    gap: var(--sp-5);
    flex-wrap: wrap;
}

.stat-item {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.stat-val-container {
    display: flex;
    align-items: baseline;
}

.stat-num {
    font-size: 2.25rem;
    font-weight: 600;
    letter-spacing: -0.03em;
    color: var(--text-primary);
    line-height: 1;
}

.stat-desc {
    font-size: 0.85rem;
    font-weight: 400;
    color: var(--text-secondary);
    text-transform: none;
    letter-spacing: 0;
    margin-top: 4px;
}

.stats-bars-section, .stat-bar-group, .stat-bar-label-row, .stat-bar-title, 
.stat-indicator-icon, .sparkle, .stat-bar-val, .stat-bar-track, .stat-bar-progress, 
.progress-matches, .progress-gold {
    display: none !important;
}

/* ─── Tab Navigation ─────────────────────────────────────── */
.nav-tabs {
    display: flex;
    gap: var(--sp-4);
    border-bottom: 1px solid var(--border);
    margin-bottom: var(--sp-6);
    overflow-x: auto;
}

.nav-tabs::-webkit-scrollbar { display: none; }

.tab-btn {
    background: none;
    border: none;
    border-bottom: 2px solid transparent;
    padding: 0 0 12px 0;
    font-size: 0.95rem;
    font-weight: 400;
    text-transform: none;
    color: var(--text-secondary);
    margin-bottom: -1px;
    display: flex;
    align-items: center;
    gap: 6px;
    transition: all var(--transition);
}

.tab-btn:hover { color: var(--text-primary); }
.tab-btn.active {
    color: var(--text-primary);
    font-weight: 600;
    border-bottom-color: #FFFFFF;
}

.tab-badge, .tab-icon { display: none !important; }
.tab-content { display: none; }
.tab-content.active { display: block; }

/* ─── Section Header ─────────────────────────────────────── */
.section-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--sp-4);
    flex-wrap: wrap;
    gap: var(--sp-3);
}

.filter-controls, .action-buttons-group {
    display: flex;
    align-items: center;
    gap: var(--sp-2);
}

/* ─── Buttons ─────────────────────────────────────────────── */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 7px 14px;
    font-size: 0.88rem;
    font-weight: 400;
    text-transform: none;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border);
    background: rgba(255, 255, 255, 0.16);
    color: var(--text-primary);
    transition: all var(--transition);
    cursor: pointer;
}

.btn-block { width: 100%; }

.btn-primary, .btn-gold {
    background: #FFFFFF;
    color: var(--accent-dark);
    border: 1px solid #FFFFFF;
    font-weight: 600;
    box-shadow: 0 4px 14px rgba(27, 75, 72, 0.2);
}
.btn-primary:hover, .btn-gold:hover {
    background: #F0FAF9;
    box-shadow: 0 6px 18px rgba(27, 75, 72, 0.3);
}

.btn-secondary, .btn-action-save, .btn-action-read, .btn-amazon, .btn-action-dismiss {
    background: rgba(255, 255, 255, 0.16);
    color: var(--text-primary);
    border: 1px solid var(--border);
}
.btn-secondary:hover, .btn-action-save:hover, .btn-action-read:hover, .btn-amazon:hover, .btn-action-dismiss:hover {
    background: rgba(255, 255, 255, 0.28);
    border-color: var(--border-strong);
}

.btn-ghost-action {
    background: transparent;
    color: var(--text-secondary);
    border: 1px solid transparent;
    padding: 6px 10px;
    font-size: 0.85rem;
}
.btn-ghost-action:hover {
    color: var(--text-primary);
    background: transparent;
    text-decoration: underline;
}

.btn-danger-light {
    background: rgba(255, 255, 255, 0.1);
    color: #FFE5E5;
    border: 1px solid rgba(255, 255, 255, 0.3);
}
.btn-danger-light:hover {
    background: rgba(255, 107, 107, 0.25);
    border-color: #FF6B6B;
}

/* ─── Form Controls ─────────────────────────────────────── */
.custom-select {
    background: #4EAFA9;
    border: 1px solid var(--border);
    color: var(--text-primary);
    padding: 6px 12px;
    border-radius: var(--radius-sm);
    font-size: 0.9rem;
    outline: none;
    transition: border-color var(--transition);
}
.custom-select:focus { border-color: #FFFFFF; }
.custom-select option {
    background: #419B96;
    color: #FFFFFF;
}

.form-group { margin-bottom: var(--sp-3); }
.form-group label {
    display: block;
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-bottom: 6px;
    text-transform: none;
}
.form-group input, .form-group textarea {
    width: 100%;
    background: #44A29D;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 8px 12px;
    color: var(--text-primary);
    font-size: 0.95rem;
    outline: none;
}
.form-group input:focus, .form-group textarea:focus { 
    border-color: #FFFFFF;
    box-shadow: 0 0 0 2px rgba(255, 255, 255, 0.25);
}

/* ─── Buchtipp of the Day (Spotlight) ─────────────────────── */
.spotlight-container {
    margin-bottom: var(--sp-7);
}

.spotlight-card {
    background: transparent;
    border: none;
    box-shadow: none;
    display: grid;
    grid-template-columns: 240px 1fr;
    gap: 3.5rem;
    align-items: start;
    padding: 0;
}

/* 3D Realistic Standing Hardcover Book */
.book-3d-scene {
    perspective: 1200px;
    perspective-origin: 50% 50%;
    width: 220px;
    height: 310px;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 10px 0 20px;
}

.book-3d-item {
    position: relative;
    width: 175px;
    height: 260px;
    transform-style: preserve-3d;
    transform: rotateY(-20deg) rotateX(4deg);
    transition: transform 0.4s cubic-bezier(0.25, 1, 0.5, 1);
    cursor: pointer;
    text-decoration: none;
    display: block;
}

.book-3d-item:hover {
    transform: rotateY(-12deg) rotateX(2deg) translateY(-8px);
}

/* 3D Spine (Left Side) */
.book-3d-spine {
    position: absolute;
    top: 0;
    left: 0;
    width: 26px;
    height: 100%;
    transform: rotateY(-90deg) translateX(-26px);
    transform-origin: left;
    background: linear-gradient(90deg, #3C8F8A 0%, #52B5B0 60%, #419691 100%);
    border: 1px solid rgba(255, 255, 255, 0.25);
    border-right: none;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    z-index: 2;
}

.spine-text {
    writing-mode: vertical-rl;
    transform: rotate(180deg);
    font-size: 10px;
    font-weight: 500;
    letter-spacing: 0.04em;
    color: #FFFFFF;
    white-space: nowrap;
    text-overflow: ellipsis;
    overflow: hidden;
    max-height: 240px;
    padding: 8px 2px;
}

/* 3D Front Cover */
.book-3d-cover {
    position: absolute;
    inset: 0;
    background: #FAF8F2;
    border-radius: 2px 5px 5px 2px;
    overflow: hidden;
    z-index: 4;
    border: 1px solid rgba(255, 255, 255, 0.3);
    box-shadow: inset 3px 0 6px rgba(0, 0, 0, 0.08);
}

.book-3d-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.book-3d-placeholder {
    width: 100%;
    height: 100%;
    background: linear-gradient(145deg, #2B625E 0%, #1E4946 100%);
    padding: 24px 18px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    text-align: center;
    border: 1px solid rgba(255, 255, 255, 0.2);
    box-shadow: inset 0 0 20px rgba(0, 0, 0, 0.3);
    color: #FFFFFF;
}

.cover-quote {
    font-size: 0.65rem;
    line-height: 1.35;
    color: rgba(255, 255, 255, 0.75);
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.cover-title {
    font-family: var(--ff-serif);
    font-size: 1.35rem;
    font-weight: 400;
    line-height: 1.2;
    color: #FFFFFF;
    margin: 12px 0 8px;
    text-align: center;
    letter-spacing: -0.01em;
    text-shadow: 0 1px 4px rgba(0, 0, 0, 0.3);
}

.cover-author {
    font-size: 0.85rem;
    font-weight: 500;
    color: rgba(255, 255, 255, 0.85);
    margin-top: auto;
}

.book-3d-sheen {
    position: absolute;
    inset: 0;
    background: linear-gradient(105deg, rgba(255,255,255,0.45) 0%, rgba(255,255,255,0.15) 12%, transparent 25%, rgba(0,0,0,0.03) 100%);
    pointer-events: none;
    z-index: 5;
}

/* 3D Pages Block (Right Thickness) */
.book-3d-pages {
    position: absolute;
    top: 3px;
    right: 0;
    width: 22px;
    height: calc(100% - 6px);
    transform: rotateY(90deg) translateX(11px) translateZ(11px);
    transform-origin: right;
    background: repeating-linear-gradient(90deg, #FAF8F2 0px, #FAF8F2 1px, #ECE8DC 2px, #E5E0D2 3px);
    border: 1px solid rgba(0, 0, 0, 0.1);
    border-left: none;
    z-index: 1;
}

/* 3D Floor Shadow */
.book-3d-shadow {
    position: absolute;
    bottom: -22px;
    left: -12px;
    width: 205px;
    height: 38px;
    background: radial-gradient(ellipse at 40% 50%, rgba(24, 73, 70, 0.45) 0%, rgba(24, 73, 70, 0.18) 45%, transparent 75%);
    transform: rotateX(80deg) translateZ(-15px);
    filter: blur(6px);
    pointer-events: none;
    z-index: 0;
}

/* Spotlight Body */
.spotlight-body {
    display: flex;
    flex-direction: column;
}

.spotlight-kicker {
    font-size: 0.76rem;
    font-weight: 700;
    letter-spacing: 0.12em;
    color: #FFFFFF;
    text-transform: uppercase;
    margin-bottom: 10px;
    display: flex;
    align-items: center;
    gap: 6px;
}

.spotlight-title {
    font-family: var(--ff-serif);
    font-size: clamp(2.3rem, 3.8vw, 3rem);
    font-weight: 600;
    color: #FFFFFF;
    line-height: 1.15;
    letter-spacing: -0.015em;
    margin-bottom: 4px;
    -webkit-text-stroke: 0.3px rgba(255, 255, 255, 0.85);
    text-shadow: 0 1px 8px rgba(0, 0, 0, 0.12);
}

.spotlight-author {
    font-size: 1.05rem;
    color: var(--text-secondary);
    margin-bottom: 14px;
}
.spotlight-author em {
    font-style: italic;
    color: #FFFFFF;
}

.spotlight-genres {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-bottom: 18px;
}

.spotlight-genre-tag {
    font-size: 0.72rem;
    font-weight: 500;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: #FFFFFF;
    background: rgba(255, 255, 255, 0.16);
    border: 1px solid var(--border);
    padding: 4px 8px;
    border-radius: 4px;
}

.spotlight-reason-box {
    background: rgba(255, 255, 255, 0.18);
    border: 1px solid rgba(255, 255, 255, 0.35);
    border-left: 4px solid #FFFFFF;
    border-radius: var(--radius-sm);
    padding: 14px 18px;
    margin-bottom: 18px;
    box-shadow: 0 4px 16px rgba(27, 75, 72, 0.15);
}

.spotlight-reason-title {
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.06em;
    color: #FFFFFF;
    text-transform: uppercase;
    margin-bottom: 6px;
    display: flex;
    align-items: center;
    gap: 6px;
}

.spotlight-reason-text {
    font-size: 0.95rem;
    color: #FFFFFF;
    line-height: 1.55;
}

.spotlight-desc {
    font-size: 0.95rem;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 22px;
}

.spotlight-actions {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
}

/* ─── Cards Grid ─────────────────────────────────────────── */
.books-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: var(--sp-4);
    margin-bottom: var(--sp-7);
}

.book-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: var(--sp-3);
    display: flex;
    flex-direction: column;
    gap: var(--sp-2);
    position: relative;
    box-shadow: 0 4px 16px rgba(27, 75, 72, 0.15);
    transition: all var(--transition);
}
.book-card:hover { 
    border-color: var(--border-strong);
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(27, 75, 72, 0.25);
}

.book-card-main {
    display: grid;
    grid-template-columns: 74px 1fr;
    gap: var(--sp-3);
}

.book-cover-wrapper {
    width: 100%;
    aspect-ratio: 2 / 3;
    border-radius: 3px;
    overflow: hidden;
    background: #44A29D;
    border: 1px solid var(--border);
}
.book-cover-img { width: 100%; height: 100%; object-fit: cover; }
.book-cover-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #447C79 0%, #356764 100%);
    border-left: 4px solid rgba(255, 255, 255, 0.4);
    color: #FFFFFF;
    text-align: center;
    padding: 8px 6px;
    box-shadow: inset 0 0 10px rgba(0, 0, 0, 0.25);
}

.mini-placeholder-accent {
    font-size: 0.65rem;
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: 4px;
}

.mini-placeholder-title {
    font-family: var(--ff-serif);
    font-size: 0.68rem;
    font-weight: 600;
    line-height: 1.25;
    color: #FFFFFF;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.mini-placeholder-author {
    font-size: 0.58rem;
    color: rgba(255, 255, 255, 0.8);
    margin-top: 4px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    width: 100%;
}

.book-details {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.match-score-badge {
    font-size: 12px;
    color: #FFFFFF;
    font-weight: 600;
    margin-bottom: 2px;
}

.book-title {
    font-family: var(--ff-serif);
    font-size: 1.15rem;
    font-weight: 600;
    color: #FFFFFF;
    line-height: 1.25;
    text-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

.book-author {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-bottom: 2px;
}

.card-genres {
    font-size: 0.8rem;
    color: var(--text-tertiary);
    line-height: 1.3;
}

.rating-display { display: flex; align-items: center; gap: 4px; margin-top: 4px; }
.star-filled { color: var(--accent-gold); font-size: 0.8rem; }
.star-empty { color: rgba(255,255,255,0.3); font-size: 0.8rem; }
.rating-text { font-size: 0.8rem; color: var(--text-secondary); }

.why-recommended {
    font-size: 0.85rem;
    color: var(--text-secondary);
    line-height: 1.5;
    background: transparent;
    border: none;
    padding: 0;
    margin-top: 4px;
}

.book-desc {
    font-size: 0.85rem;
    color: var(--text-secondary);
    line-height: 1.5;
}

.card-actions {
    display: flex;
    align-items: center;
    gap: 6px;
    margin-top: auto;
    border: none;
    padding-top: var(--sp-2);
}
.card-actions .btn {
    flex: 1;
    height: 32px;
    padding: 0 8px;
    font-size: 0.82rem;
    white-space: nowrap;
    background: rgba(255, 255, 255, 0.18);
    color: var(--text-primary);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
}
.card-actions .btn:hover {
    background: rgba(255, 255, 255, 0.32);
    border-color: var(--border-strong);
}
.card-actions .btn-ghost-action {
    flex: none;
    height: 32px;
    padding: 0 6px;
    font-size: 0.82rem;
    background: transparent;
    border: 1px solid transparent;
    color: var(--text-secondary);
}
.card-actions .btn-ghost-action:hover {
    color: var(--text-primary);
    background: transparent;
    text-decoration: underline;
}

.book-card-checkbox {
    position: absolute; top: 10px; left: 10px;
    accent-color: #FFFFFF; z-index: 2;
}

/* ─── Bulk Actions Bar ─────────────────────────────────── */
.bulk-actions-bar {
    position: sticky; top: var(--sp-2); z-index: 80;
    background: var(--surface-elevated);
    border: 1px solid var(--border-strong);
    border-radius: var(--radius-md);
    padding: var(--sp-2) var(--sp-3);
    margin-bottom: var(--sp-4);
    box-shadow: 0 8px 24px rgba(27, 75, 72, 0.2);
}
.bulk-actions-content { display: flex; justify-content: space-between; align-items: center; }
#bulk-selected-count { font-size: 0.9rem; color: var(--text-primary); }
.bulk-buttons { display: flex; gap: 6px; }

/* ─── Dropzone ────────────────────────────────────────── */
.dropzone {
    border: 1px dashed var(--border-strong);
    border-radius: var(--radius-md);
    padding: var(--sp-5);
    text-align: center;
    background: rgba(255, 255, 255, 0.08);
    margin-bottom: var(--sp-4);
    cursor: pointer;
    transition: all var(--transition);
}
.dropzone:hover { 
    border-color: #FFFFFF;
    background: rgba(255, 255, 255, 0.16);
}
.dropzone-inner { display: flex; flex-direction: column; gap: 6px; align-items: center; }
.dropzone-icon { font-size: 1.25rem; color: #FFFFFF; }
.dropzone-text strong { font-size: 0.95rem; color: var(--text-primary); font-weight: 500; }
.dropzone-text span { font-size: 0.85rem; color: var(--text-secondary); }

/* ─── Editorial Lese-DNA Architecture (Luxury Literary Dashboard) ── */
.taste-editorial-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
    margin-top: 10px;
}
.taste-card {
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.18);
    border-radius: 20px;
    padding: 28px;
    backdrop-filter: blur(16px);
    box-shadow: 0 12px 36px rgba(0, 0, 0, 0.07);
    transition: all 0.25s ease;
    display: flex;
    flex-direction: column;
}
.taste-card:hover {
    border-color: rgba(255, 255, 255, 0.32);
    background: rgba(255, 255, 255, 0.11);
    transform: translateY(-2px);
    box-shadow: 0 16px 44px rgba(0, 0, 0, 0.12);
}
.taste-card.taste-hero-card {
    grid-column: span 2;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.14) 0%, rgba(255, 255, 255, 0.06) 100%);
    border: 1px solid rgba(255, 255, 255, 0.28);
    padding: 32px;
}
.taste-card-header {
    margin-bottom: 22px;
    display: flex;
    flex-direction: column;
    gap: 4px;
}
.taste-pill-label {
    font-size: 0.72rem;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: rgba(255, 255, 255, 0.8);
    font-weight: 600;
}
.taste-card h3 {
    font-family: var(--ff-serif);
    font-size: 1.45rem;
    font-weight: 500;
    color: #FFFFFF;
    letter-spacing: -0.015em;
}

/* Hero Synthesis Card Styling */
.dna-narrative-lead {
    font-family: var(--ff-serif);
    font-size: 1.22rem;
    line-height: 1.65;
    color: #FFFFFF;
    margin-bottom: 26px;
    letter-spacing: -0.01em;
}
.dna-narrative-lead strong {
    color: #FFFFFF;
    font-weight: 600;
    border-bottom: 1.5px solid rgba(255, 255, 255, 0.5);
    padding-bottom: 1px;
}
.dna-metrics-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 16px;
    margin-bottom: 24px;
}
.dna-metric-box {
    background: rgba(255, 255, 255, 0.07);
    border: 1px solid rgba(255, 255, 255, 0.14);
    border-radius: 14px;
    padding: 16px 20px;
    display: flex;
    flex-direction: column;
    gap: 4px;
}
.dna-metric-label {
    font-size: 0.72rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: rgba(255, 255, 255, 0.75);
    font-weight: 600;
}
.dna-metric-val {
    font-size: 1.08rem;
    font-weight: 600;
    color: #FFFFFF;
}
.dna-highlights-section {
    padding-top: 18px;
    border-top: 1px solid rgba(255, 255, 255, 0.14);
    display: flex;
    flex-direction: column;
    gap: 10px;
}
.dna-highlights-label {
    font-size: 0.76rem;
    text-transform: uppercase;
    letter-spacing: 0.09em;
    color: rgba(255, 255, 255, 0.75);
    font-weight: 600;
}
.dna-highlights-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}
.dna-highlight-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.22);
    border-radius: 30px;
    padding: 6px 14px;
    font-size: 0.86rem;
    color: #FFFFFF;
}
.dna-badge-star {
    color: #FFE082;
    font-size: 0.8rem;
}
.dna-badge-title {
    font-weight: 600;
}
.dna-badge-author {
    color: rgba(255, 255, 255, 0.75);
    font-size: 0.8rem;
}

/* ─── Visual Analytics & Interactive Donut Charts ──────── */
.chart-container {
    width: 100%;
    padding: 4px 0;
}
.donut-chart-layout {
    display: flex;
    align-items: center;
    gap: 28px;
    flex-wrap: wrap;
}
.donut-svg-wrapper {
    position: relative;
    width: 144px;
    height: 144px;
    flex-shrink: 0;
    margin: 0 auto;
}
.donut-svg {
    width: 100%;
    height: 100%;
    transform: rotate(0deg);
}
.donut-segment {
    transition: stroke-width 0.3s ease, filter 0.3s ease;
    cursor: pointer;
}
.donut-segment:hover {
    stroke-width: 24;
    filter: brightness(1.2) drop-shadow(0 0 8px rgba(255,255,255,0.45));
}
.donut-center-text {
    position: absolute;
    inset: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    pointer-events: none;
}
.donut-center-num {
    font-size: 1.75rem;
    font-weight: 700;
    color: #FFFFFF;
    line-height: 1;
    font-family: var(--ff-serif);
}
.donut-center-label {
    font-size: 0.68rem;
    color: rgba(255, 255, 255, 0.8);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-top: 4px;
    text-align: center;
}
.chart-legend-list {
    flex: 1;
    min-width: 160px;
    display: flex;
    flex-direction: column;
    gap: 8px;
}
.chart-legend-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 0.86rem;
    gap: 10px;
    padding: 6px 10px;
    border-radius: 8px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.08);
    transition: background 0.2s ease;
}
.chart-legend-item:hover {
    background: rgba(255, 255, 255, 0.12);
    border-color: rgba(255, 255, 255, 0.2);
}
.legend-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    flex-shrink: 0;
}
.legend-label {
    flex: 1;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    color: #FFFFFF;
    font-weight: 500;
}
.legend-meta {
    color: rgba(255, 255, 255, 0.85);
    font-size: 0.82rem;
    white-space: nowrap;
}
.legend-meta strong {
    color: #FFFFFF;
    font-weight: 600;
}

/* Country distribution */
.country-grid-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
    width: 100%;
}
.country-row-item {
    display: flex;
    flex-direction: column;
    gap: 6px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.08);
    padding: 10px 12px;
    border-radius: 10px;
}
.country-row-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.88rem;
    color: #FFFFFF;
}
.country-flag-title {
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 500;
}
.country-bar-track {
    height: 4px;
    background: rgba(255, 255, 255, 0.12);
    border-radius: 2px;
    overflow: hidden;
}
.country-bar-fill {
    height: 100%;
    background: linear-gradient(90deg, #FFFFFF, #C8EBE6);
    border-radius: 2px;
    transition: width 0.6s ease;
}
.empty-chart-state {
    text-align: center;
    padding: 36px 14px;
    color: var(--text-secondary);
    font-size: 0.88rem;
}

/* ─── Modals ──────────────────────────────────────────── */
.modal-overlay {
    position: fixed; inset: 0; background: rgba(30, 72, 69, 0.85);
    backdrop-filter: blur(8px);
    display: none; align-items: center; justify-content: center;
    z-index: 999; padding: var(--sp-3);
}
.modal-overlay.active { display: flex; }
.modal-card {
    background: #5A9994;
    border: 1px solid var(--border-strong);
    border-radius: var(--radius-lg);
    width: 100%; max-width: 480px;
    padding: var(--sp-4);
    position: relative;
    box-shadow: 0 24px 48px rgba(22, 60, 57, 0.35);
}
.modal-card.modal-lg { max-width: 640px; }
.modal-header h3 { font-size: 1.15rem; font-weight: 500; color: var(--text-primary); margin-bottom: 2px; }
.modal-header p { font-size: 0.9rem; color: var(--text-secondary); }
.badge-tag { display: none; }
.text-center { text-align: center; }
.modal-close {
    position: absolute; top: var(--sp-3); right: var(--sp-3);
    background: none; border: none; font-size: 1.2rem; color: var(--text-secondary); cursor: pointer;
    transition: color var(--transition);
}
.modal-close:hover { color: var(--text-primary); }
.modal-actions {
    display: flex; gap: var(--sp-2); justify-content: flex-end;
    margin-top: var(--sp-4);
}

.profile-options-grid { display: grid; grid-template-columns: 1fr 1fr; gap: var(--sp-3); margin-top: var(--sp-3); }
.profile-option-card {
    background: #429E99;
    border: 1px solid var(--border); border-radius: var(--radius-md);
    padding: var(--sp-3); text-align: center; cursor: pointer;
    transition: all var(--transition);
}
.profile-option-card:hover, .profile-option-card.highlight { 
    border-color: #FFFFFF;
    background: #3B938E;
}
.option-avatar { font-size: 1.5rem; margin-bottom: 6px; }
.profile-option-card h4 { font-size: 0.95rem; font-weight: 500; color: var(--text-primary); margin-bottom: 4px; }
.option-desc { font-size: 0.85rem; color: var(--text-secondary); margin-bottom: 12px; }

.profile-list, .import-preview-list {
    display: flex; flex-direction: column; border: 1px solid var(--border);
    border-radius: var(--radius-sm); margin-top: var(--sp-3); max-height: 280px; overflow-y: auto;
}
.profile-item, .import-item {
    padding: 10px 12px; border-bottom: 1px solid var(--border);
    font-size: 0.9rem; background: #4AA7A2; color: var(--text-primary); cursor: pointer;
    transition: background var(--transition);
}
.profile-item:last-child, .import-item:last-child { border-bottom: none; }
.profile-item:hover, .profile-item.active { background: #419691; }
.import-item-details { flex: 1; }

.star-rating-picker { display: flex; justify-content: center; gap: 6px; margin: var(--sp-3) 0; }
.star-rating-picker .star { font-size: 1.75rem; color: rgba(255,255,255,0.3); cursor: pointer; transition: color var(--transition); }
.star-rating-picker .star.selected, .star-rating-picker .star:hover { color: var(--accent-gold); }
.rating-text-feedback { text-align: center; font-size: 0.85rem; color: var(--text-secondary); }

/* ─── Add Book Modal Auto-Complete Dropdown ───────────────── */
.input-autocomplete-wrap {
    position: relative;
    width: 100%;
}
.autocomplete-loading-spinner {
    position: absolute;
    right: 12px;
    top: 50%;
    transform: translateY(-50%);
    font-size: 0.95rem;
    pointer-events: none;
    opacity: 0.7;
    animation: spin 1s infinite linear;
}
@keyframes spin {
    0% { transform: translateY(-50%) rotate(0deg); }
    100% { transform: translateY(-50%) rotate(360deg); }
}
.autocomplete-dropdown {
    position: absolute;
    top: calc(100% + 5px);
    left: 0;
    right: 0;
    background: #143e3b;
    border: 1px solid rgba(255, 255, 255, 0.4);
    border-radius: 12px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.65);
    z-index: 99999;
    max-height: 280px;
    overflow-y: auto;
    backdrop-filter: blur(16px);
    padding: 6px;
}
.autocomplete-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 8px 10px;
    border-radius: 8px;
    cursor: pointer;
    transition: background 0.18s ease;
}
.autocomplete-item:hover,
.autocomplete-item.active {
    background: rgba(255, 255, 255, 0.16);
}
.autocomplete-thumb {
    width: 34px;
    height: 48px;
    border-radius: 4px;
    object-fit: cover;
    background: rgba(255, 255, 255, 0.08);
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    box-shadow: 0 2px 6px rgba(0,0,0,0.3);
}
.autocomplete-info {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
    gap: 2px;
}
.autocomplete-title {
    font-size: 0.88rem;
    font-weight: 600;
    color: #FFFFFF;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.autocomplete-author {
    font-size: 0.78rem;
    color: var(--text-secondary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.autocomplete-genre-tag {
    font-size: 0.7rem;
    background: rgba(255, 255, 255, 0.12);
    color: rgba(255, 255, 255, 0.9);
    padding: 1px 6px;
    border-radius: 4px;
    align-self: flex-start;
    margin-top: 2px;
    white-space: nowrap;
    max-width: 220px;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* ─── Footer ──────────────────────────────────────────── */
.app-footer {
    padding: var(--sp-6) 0 var(--sp-5);
    margin-top: var(--sp-7);
    border-top: 1px solid rgba(255, 255, 255, 0.12);
    display: flex;
    flex-direction: column;
    gap: var(--sp-4);
}

.footer-top {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    flex-wrap: wrap;
    gap: var(--sp-3);
}

.footer-brand-wrap {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.footer-tagline {
    font-size: 0.88rem;
    color: var(--text-secondary);
    margin-top: 2px;
}

.footer-links {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 10px;
}

.footer-legal-btn {
    background: none;
    border: none;
    padding: 4px 6px;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-secondary);
    cursor: pointer;
    border-radius: 4px;
    transition: color var(--transition), background var(--transition);
}

.footer-legal-btn:hover {
    color: #FFFFFF;
    background: rgba(255, 255, 255, 0.08);
}

.footer-dot {
    color: rgba(255, 255, 255, 0.3);
    font-size: 0.75rem;
    user-select: none;
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--sp-2);
    padding-top: var(--sp-3);
    border-top: 1px solid rgba(255, 255, 255, 0.06);
}

.footer-copy {
    font-size: 0.8rem;
    color: var(--text-tertiary);
}

.footer-amazon-notice {
    font-size: 0.76rem;
    color: var(--text-tertiary);
    font-style: italic;
}

/* ─── Legal Modal Styles ─────────────────────────────── */
.modal-legal-card {
    max-width: 740px;
    width: 92%;
    max-height: 85vh;
    display: flex;
    flex-direction: column;
}

.legal-modal-tabs {
    display: flex;
    gap: 8px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.12);
    padding-bottom: 12px;
    margin-bottom: 16px;
    flex-wrap: wrap;
}

.legal-tab-btn {
    padding: 7px 14px;
    border-radius: 20px;
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.12);
    color: var(--text-secondary);
    font-size: 0.85rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition);
}

.legal-tab-btn:hover {
    background: rgba(255, 255, 255, 0.12);
    color: #FFFFFF;
}

.legal-tab-btn.active {
    background: #FFFFFF;
    border-color: #FFFFFF;
    color: #164e4a;
    font-weight: 600;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}

.legal-content-body {
    overflow-y: auto;
    padding-right: 12px;
    font-size: 0.9rem;
    line-height: 1.7;
    color: rgba(255, 255, 255, 0.92);
}

.legal-content-body h2 {
    font-family: var(--ff-serif);
    font-size: 1.45rem;
    font-weight: 600;
    color: #FFFFFF;
    margin-bottom: 4px;
}

.legal-content-body .legal-subtitle {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-bottom: 18px;
}

.legal-content-body h3 {
    font-family: var(--ff-sans);
    font-size: 1rem;
    font-weight: 600;
    color: #FFFFFF;
    margin-top: 18px;
    margin-bottom: 6px;
}

.legal-content-body p {
    margin-bottom: 12px;
    color: rgba(255, 255, 255, 0.85);
}

.legal-content-body code {
    background: rgba(255, 255, 255, 0.1);
    padding: 2px 5px;
    border-radius: 4px;
    font-size: 0.85em;
}

/* ─── Authentication Modal & Components ──────────────── */
.modal-auth-gate {
    backdrop-filter: blur(28px) saturate(160%) !important;
    -webkit-backdrop-filter: blur(28px) saturate(160%) !important;
    background: rgba(15, 34, 32, 0.85) !important;
    cursor: default !important;
    z-index: 99999 !important;
}

.modal-auth-card {
    max-width: 440px;
    width: 92%;
    padding: var(--sp-5);
    box-shadow: 0 25px 60px -12px rgba(0, 0, 0, 0.5), 0 0 0 1px rgba(255, 255, 255, 0.15) !important;
}

.auth-tabs {
    display: flex;
    gap: 6px;
    background: rgba(0, 0, 0, 0.15);
    padding: 4px;
    border-radius: 30px;
    margin-bottom: var(--sp-4);
}

.auth-tab-btn {
    flex: 1;
    padding: 8px 12px;
    border: none;
    background: none;
    color: var(--text-secondary);
    font-size: 0.88rem;
    font-weight: 500;
    border-radius: 24px;
    cursor: pointer;
    transition: all var(--transition);
}

.auth-tab-btn.active {
    background: #FFFFFF;
    color: #164e4a;
    font-weight: 600;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.12);
}

.btn-google {
    background: #FFFFFF !important;
    color: #374151 !important;
    font-weight: 500 !important;
    border: 1px solid rgba(0, 0, 0, 0.08) !important;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.08);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 10px 16px;
    border-radius: 30px;
    transition: all var(--transition);
}

.btn-google:hover {
    background: #F9FAFB !important;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.12);
    transform: translateY(-1px);
}

.auth-divider {
    display: flex;
    align-items: center;
    text-align: center;
    margin: var(--sp-3) 0;
    color: var(--text-tertiary);
    font-size: 0.78rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.auth-divider::before, .auth-divider::after {
    content: '';
    flex: 1;
    border-bottom: 1px solid rgba(255, 255, 255, 0.12);
}

.auth-divider span {
    padding: 0 10px;
}

.btn-link-forgot {
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 0.78rem;
    cursor: pointer;
    padding: 0;
    transition: color var(--transition);
}

.btn-link-forgot:hover {
    color: #FFFFFF;
    text-decoration: underline;
}

.auth-error-msg {
    padding: 8px 12px;
    background: rgba(220, 38, 38, 0.2);
    border: 1px solid rgba(220, 38, 38, 0.4);
    border-radius: 8px;
    color: #fca5a5;
    font-size: 0.82rem;
    margin-bottom: var(--sp-2);
}

.auth-success-msg {
    padding: 10px 14px;
    background: rgba(34, 197, 94, 0.2);
    border: 1px solid rgba(34, 197, 94, 0.4);
    border-radius: 8px;
    color: #86efac;
    font-size: 0.85rem;
    margin-bottom: var(--sp-2);
}

.btn-guest-tour:hover {
    color: #FFFFFF !important;
}

/* ─── Touch Optimizations & Safe Areas ───────────────── */
body {
    -webkit-tap-highlight-color: transparent;
    padding-bottom: max(24px, env(safe-area-inset-bottom));
}

button, a, input, select {
    touch-action: manipulation;
}

/* ─── Responsive Design System (Tablet & Mobile) ─────── */

/* Tablet & Intermediate Screens */
@media (max-width: 960px) {
    .app-container { padding: 0 var(--sp-3); }
    .spotlight-card { grid-template-columns: 200px 1fr; gap: 2.25rem; }
    .books-grid { grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: var(--sp-3); }
    .taste-editorial-grid { grid-template-columns: 1fr; }
    .taste-card.taste-hero-card { grid-column: span 1; padding: 22px; }
}

/* Mobile Screens & iPhones (≤ 720px) */
@media (max-width: 720px) {
    .app-container {
        padding: 0 14px;
    }

    /* Navigation */
    .top-nav {
        padding: 12px 0 10px;
        margin-bottom: 8px;
    }

    .brand-logo {
        gap: 8px;
    }

    .brand-logo-img {
        height: 30px;
    }

    .brand-logo-text {
        font-size: 1.15rem;
        letter-spacing: -0.01em;
    }

    .domain-tld {
        font-size: 0.95rem;
    }

    .nav-right {
        gap: 6px;
    }

    .profile-switch-btn, .lang-switch-btn {
        padding: 6px 9px;
        font-size: 0.8rem;
        gap: 4px;
    }

    .lang-dropdown-menu {
        position: absolute;
        right: 0;
        top: calc(100% + 6px);
        width: 165px;
        z-index: 200;
        box-shadow: 0 16px 36px rgba(18, 60, 58, 0.45);
    }

    /* Hero / Header */
    .app-header {
        padding: 6px 0 18px;
    }

    .hero-layout {
        gap: 12px;
        margin-bottom: 18px;
    }

    .hero-headline .display {
        font-size: clamp(2.2rem, 9.5vw, 2.9rem);
        line-height: 1.18;
        font-weight: 300;
        margin-bottom: 8px;
    }

    .welcome-heading {
        font-size: 1.12rem;
        margin-bottom: 2px;
    }

    .welcome-subtext {
        font-size: 0.88rem;
        line-height: 1.45;
    }

    /* Stats Row (Compact Mobile Bar) */
    .stats-top-row {
        gap: 20px;
        margin-top: 6px;
        justify-content: flex-start;
    }

    .stat-num {
        font-size: 1.85rem;
    }

    .stat-desc {
        font-size: 0.78rem;
        margin-top: 2px;
    }

    /* Tab Navigation (Horizontal Touch Scroll with Safe Padding) */
    .nav-tabs {
        display: flex;
        gap: 16px;
        border-bottom: 1px solid var(--border);
        margin-bottom: 22px;
        padding-bottom: 2px;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
        scrollbar-width: none;
        white-space: nowrap;
    }
    .nav-tabs::-webkit-scrollbar { display: none; }

    .tab-btn {
        font-size: 0.92rem;
        padding: 6px 4px 10px;
        min-height: 44px;
        flex-shrink: 0;
    }

    /* Spotlight (✦ Dein Buchtipp of the Day) */
    .spotlight-container {
        margin-bottom: 32px;
    }

    .spotlight-card {
        display: flex;
        flex-direction: column;
        gap: 16px;
        align-items: stretch;
    }

    .spotlight-left-col {
        display: flex;
        justify-content: center;
        width: 100%;
    }

    .book-3d-scene {
        width: 100%;
        max-width: 210px;
        height: 250px;
        padding: 0;
        margin: 0 auto 4px;
    }

    .book-3d-item {
        width: 150px;
        height: 225px;
    }

    .book-3d-shadow {
        bottom: -16px;
        left: -10px;
        width: 175px;
        height: 30px;
    }

    .spotlight-kicker {
        font-size: 0.72rem;
        letter-spacing: 0.1em;
        margin-bottom: 6px;
    }

    .spotlight-title {
        font-size: 1.75rem;
        line-height: 1.2;
        margin-bottom: 4px;
    }

    .spotlight-author {
        font-size: 0.92rem;
        margin-bottom: 10px;
    }

    .spotlight-genres {
        gap: 5px;
        margin-bottom: 12px;
    }

    .spotlight-genre-tag {
        font-size: 0.68rem;
        padding: 3px 7px;
    }

    .spotlight-reason-box {
        padding: 12px 14px;
        margin-bottom: 14px;
        border-left-width: 3px;
    }

    .spotlight-reason-title {
        font-size: 0.72rem;
        margin-bottom: 4px;
    }

    .spotlight-reason-text {
        font-size: 0.88rem;
        line-height: 1.45;
    }

    .spotlight-desc {
        font-size: 0.88rem;
        line-height: 1.5;
        margin-bottom: 16px;
    }

    /* Mobile Spotlight Actions (Large thumb-friendly tap targets) */
    .spotlight-actions {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 8px;
        width: 100%;
    }

    .spotlight-actions .btn {
        width: 100%;
        height: 44px;
        font-size: 0.92rem;
        display: flex;
        align-items: center;
        justify-content: center;
        border-radius: 8px;
    }

    .spotlight-actions .btn-ghost-action {
        grid-column: span 2;
        width: 100%;
        height: 38px;
        text-align: center;
        justify-content: center;
        font-size: 0.86rem;
    }

    /* Section Headers & Controls */
    .section-header {
        flex-direction: column;
        align-items: stretch;
        gap: 10px;
        margin-bottom: 14px;
    }

    .section-header h2 {
        font-size: 1.05rem;
    }

    .filter-controls, .action-buttons-group {
        display: flex;
        width: 100%;
        gap: 6px;
    }

    .custom-select {
        flex: 1;
        height: 38px;
        font-size: 16px; /* Prevents iOS Safari Auto-Zoom */
    }

    #refresh-recs-btn {
        height: 38px;
        padding: 0 12px;
        font-size: 0.85rem;
        white-space: nowrap;
    }

    .action-buttons-group .btn {
        flex: 1;
        height: 38px;
        padding: 0 6px;
        font-size: 0.82rem;
        text-align: center;
        justify-content: center;
    }

    /* Recommendation & Library Cards */
    .books-grid {
        grid-template-columns: 1fr;
        gap: 14px;
        margin-bottom: 32px;
    }

    .book-card {
        padding: 14px;
        border-radius: 12px;
        gap: 10px;
    }

    .book-card-main {
        grid-template-columns: 64px 1fr;
        gap: 12px;
    }

    .book-cover-wrapper {
        border-radius: 4px;
    }

    .book-title {
        font-size: 1.02rem;
        line-height: 1.25;
    }

    .book-author {
        font-size: 0.82rem;
    }

    .card-genres {
        font-size: 0.76rem;
    }

    .why-recommended, .book-desc {
        font-size: 0.84rem;
        line-height: 1.45;
    }

    .card-actions {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 8px;
        padding-top: 10px;
    }

    .card-actions .btn,
    .card-actions .btn-ghost-action {
        height: 38px;
        font-size: 0.86rem;
        display: flex;
        align-items: center;
        justify-content: center;
        border-radius: 8px;
    }

    .card-actions .btn-ghost-action {
        background: rgba(255, 255, 255, 0.08);
        border: 1px solid rgba(255, 255, 255, 0.16);
    }

    /* Dropzone */
    .dropzone {
        padding: 20px 14px;
        border-radius: 14px;
        margin-bottom: 16px;
    }

    .dropzone-text strong {
        font-size: 0.92rem;
    }

    .dropzone-text span {
        font-size: 0.8rem;
        line-height: 1.35;
    }

    .dropzone label.btn {
        width: 100%;
        height: 40px;
        margin-top: 6px;
        font-size: 0.88rem;
        border-radius: 8px;
    }

    /* Lese-DNA Editorial Mobile */
    .taste-editorial-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }

    .taste-card {
        padding: 20px 16px;
        border-radius: 16px;
    }

    .taste-card.taste-hero-card {
        padding: 22px 18px;
    }

    .dna-narrative-lead {
        font-size: 1.08rem;
        line-height: 1.55;
        margin-bottom: 18px;
    }

    .dna-metrics-row {
        grid-template-columns: 1fr;
        gap: 10px;
    }

    .donut-chart-layout {
        flex-direction: column;
        align-items: center;
        gap: 20px;
    }

    .donut-svg-wrapper {
        width: 135px;
        height: 135px;
    }

    .chart-legend-list {
        width: 100%;
    }

    /* Bulk Actions Bar */
    .bulk-actions-bar {
        padding: 10px 12px;
        border-radius: 10px;
        top: 10px;
    }

    .bulk-actions-content {
        flex-direction: column;
        gap: 8px;
        align-items: stretch;
    }

    .bulk-buttons {
        display: flex;
        gap: 6px;
    }

    .bulk-buttons .btn {
        flex: 1;
        height: 36px;
        font-size: 0.85rem;
    }

    /* Modals & Overlays */
    .modal-overlay {
        padding: 10px;
        align-items: flex-end; /* Bottom sheet experience on mobile */
    }

    .modal-card {
        padding: 22px 18px;
        border-radius: 22px 22px 16px 16px;
        max-height: 90vh;
        overflow-y: auto;
        -webkit-overflow-scrolling: touch;
        width: 100%;
        box-shadow: 0 -12px 36px rgba(0, 0, 0, 0.4);
    }

    .modal-card.modal-book-details {
        padding: 22px 16px;
        border-radius: 22px 22px 16px 16px;
        width: 100%;
    }

    .book-details-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }

    .book-details-cover-col {
        position: static;
    }

    .book-details-3d-scene {
        width: 140px;
        height: 205px;
        margin: 0 auto 10px;
    }

    .book-details-3d-item {
        width: 130px;
        height: 190px;
    }

    .book-details-title {
        font-size: 1.55rem;
        line-height: 1.2;
    }

    .book-details-actions-bar {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 8px;
    }

    .book-details-actions-bar .btn {
        height: 42px;
        font-size: 0.88rem;
        justify-content: center;
        border-radius: 8px;
    }

    .modal-header h3 {
        font-size: 1.12rem;
    }

    .modal-header p {
        font-size: 0.86rem;
    }

    .form-group input, .form-group textarea {
        font-size: 16px !important; /* Prevents iOS auto-zoom */
        padding: 12px 14px;
        border-radius: 10px;
    }

    .autocomplete-dropdown {
        max-height: 220px;
    }

    .autocomplete-item {
        padding: 10px 8px;
    }

    .modal-actions {
        display: flex;
        gap: 8px;
        width: 100%;
        margin-top: 16px;
    }

    .modal-actions .btn {
        flex: 1;
        height: 44px; /* Apple minimum touch target */
        font-size: 0.92rem;
        border-radius: 10px;
    }

    .profile-options-grid {
        grid-template-columns: 1fr;
        gap: 10px;
    }

    /* Footer */
    .app-footer {
        flex-direction: column;
        align-items: center;
        text-align: center;
        gap: 12px;
        padding: 28px 0 calc(24px + env(safe-area-inset-bottom));
        margin-top: 36px;
    }
}


.profile-list, .import-preview-list {
    display: flex; flex-direction: column; border: 1px solid var(--border);
    border-radius: var(--radius-sm); margin-top: var(--sp-3); max-height: 280px; overflow-y: auto;
}
.profile-item, .import-item {
    padding: 10px 12px; border-bottom: 1px solid var(--border);
    font-size: 0.9rem; background: #4AA7A2; color: var(--text-primary); cursor: pointer;
}

/* ─── Modal: Book Details & In-Depth Preview ───────────── */
.modal-card.modal-book-details {
    max-width: 840px;
    width: 95%;
    max-height: 90vh;
    overflow-y: auto;
    background: #429E99;
    border: 1px solid rgba(255, 255, 255, 0.4);
    border-radius: 20px;
    padding: 28px;
    box-shadow: 0 32px 64px rgba(18, 55, 53, 0.5);
    animation: modalPop 0.28s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes modalPop {
    from {
        opacity: 0;
        transform: scale(0.94) translateY(12px);
    }
    to {
        opacity: 1;
        transform: scale(1) translateY(0);
    }
}

.book-details-grid {
    display: grid;
    grid-template-columns: 220px 1fr;
    gap: 32px;
    align-items: start;
}

.book-details-cover-col {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    position: sticky;
    top: 0;
}

.book-details-3d-scene {
    width: 170px;
    height: 250px;
    perspective: 1200px;
    margin: 8px auto 16px;
}

.book-details-match-pill {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: rgba(255, 255, 255, 0.16);
    border: 1px solid rgba(255, 255, 255, 0.35);
    border-radius: 9999px;
    padding: 6px 14px;
    font-size: 0.84rem;
    font-weight: 500;
    color: #FFFFFF;
    backdrop-filter: blur(8px);
}

.book-details-match-pill .match-num {
    font-weight: 700;
    color: #FFFFFF;
}

.book-details-info-col {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.book-details-genres-row {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

.detail-genre-tag {
    font-size: 0.72rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    background: rgba(255, 255, 255, 0.14);
    border: 1px solid rgba(255, 255, 255, 0.28);
    color: #FFFFFF;
    padding: 3px 10px;
    border-radius: 9999px;
}

.book-details-title {
    font-family: var(--ff-serif);
    font-size: clamp(2.1rem, 4vw, 2.75rem);
    font-weight: 600;
    line-height: 1.15;
    letter-spacing: -0.015em;
    color: #FFFFFF;
    margin: 0;
    text-shadow: 0 1px 8px rgba(0, 0, 0, 0.12);
}

.book-details-author {
    font-size: 0.95rem;
    color: rgba(255, 255, 255, 0.85);
    margin: 0;
}

.book-details-author em {
    font-style: normal;
    font-weight: 500;
    color: #FFFFFF;
}

.book-details-quote-card {
    background: rgba(255, 255, 255, 0.12);
    border-left: 3px solid #FFFFFF;
    border-radius: 0 12px 12px 0;
    padding: 14px 18px;
    margin: 6px 0;
    backdrop-filter: blur(6px);
}

.quote-card-header {
    font-size: 0.72rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: rgba(255, 255, 255, 0.75);
    margin-bottom: 4px;
}

.quote-card-text {
    font-family: var(--ff-serif);
    font-style: italic;
    font-size: 1.1rem;
    line-height: 1.45;
    color: #FFFFFF;
    margin: 0;
}

.book-details-section {
    margin-top: 4px;
}

.book-details-section-heading {
    font-size: 0.82rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 6px;
}

.book-details-desc-text {
    font-size: 0.94rem;
    line-height: 1.6;
    color: rgba(255, 255, 255, 0.95);
}

.book-details-reason-card {
    background: rgba(255, 255, 255, 0.15);
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: 12px;
    padding: 12px 16px;
    margin: 4px 0;
}

.reason-card-title {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: #FFFFFF;
    margin-bottom: 4px;
}

.reason-card-text {
    font-size: 0.88rem;
    line-height: 1.5;
    color: rgba(255, 255, 255, 0.95);
    margin: 0;
}

.book-details-actions-bar {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 8px;
    padding-top: 12px;
    border-top: 1px solid rgba(255, 255, 255, 0.2);
}

.spotlight-left-col, .spotlight-title, .book-card-main {
    cursor: pointer;
}
.book-card-main:hover .book-title {
    text-decoration: underline;
    text-decoration-color: rgba(255, 255, 255, 0.6);
}

/* ─── Floating Bug & Feedback Pill ───────────────────────── */
.floating-bug-pill {
    position: fixed;
    bottom: 24px;
    right: 24px;
    z-index: 990;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(24, 76, 72, 0.9);
    border: 1px solid rgba(255, 255, 255, 0.3);
    color: #FFFFFF;
    padding: 9px 16px;
    border-radius: 9999px;
    font-size: 0.85rem;
    font-weight: 500;
    cursor: pointer;
    box-shadow: 0 8px 24px rgba(10, 40, 38, 0.45);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    transition: all 0.24s cubic-bezier(0.16, 1, 0.3, 1);
}

.floating-bug-pill:hover {
    background: rgba(35, 105, 100, 0.98);
    border-color: #FFFFFF;
    transform: translateY(-2px);
    box-shadow: 0 12px 32px rgba(10, 40, 38, 0.55);
}

.floating-bug-pill:active {
    transform: translateY(0) scale(0.97);
}

.bug-pill-icon {
    font-size: 1rem;
}

.bug-pill-label {
    letter-spacing: 0.01em;
}

/* ─── Bug Report Modal ───────────────────────────────────── */
.modal-card.modal-bug-report {
    max-width: 540px;
    width: 95%;
    background: #429E99;
    border: 1px solid rgba(255, 255, 255, 0.38);
    border-radius: 20px;
    padding: 26px;
    box-shadow: 0 28px 60px rgba(15, 50, 48, 0.55);
}

.bug-header-badge {
    display: inline-block;
    background: rgba(255, 255, 255, 0.16);
    border: 1px solid rgba(255, 255, 255, 0.32);
    border-radius: 9999px;
    padding: 3px 10px;
    font-size: 0.68rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    color: #FFFFFF;
    margin-bottom: 8px;
}

.bug-dropzone {
    border: 2px dashed rgba(255, 255, 255, 0.38);
    border-radius: 12px;
    padding: 16px;
    background: rgba(0, 0, 0, 0.08);
    cursor: pointer;
    text-align: center;
    transition: all 0.2s ease;
    margin-top: 4px;
}

.bug-dropzone:hover, .bug-dropzone.drag-hover {
    border-color: #FFFFFF;
    background: rgba(255, 255, 255, 0.14);
}

.bug-dropzone-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
}

.bug-upload-icon {
    font-size: 1.5rem;
    margin-bottom: 2px;
}

.bug-dropzone-content strong {
    font-size: 0.88rem;
    color: #FFFFFF;
}

.bug-upload-hint {
    font-size: 0.74rem;
    color: rgba(255, 255, 255, 0.75);
    line-height: 1.3;
}

.bug-screenshot-preview {
    position: relative;
    max-height: 180px;
    border-radius: 8px;
    overflow: hidden;
    display: inline-block;
}

.bug-screenshot-preview img {
    max-height: 180px;
    width: auto;
    max-width: 100%;
    border-radius: 8px;
    border: 1px solid rgba(255, 255, 255, 0.3);
    display: block;
    margin: 0 auto;
}

.btn-remove-screenshot {
    position: absolute;
    top: 6px;
    right: 6px;
    background: rgba(0, 0, 0, 0.65);
    border: 1px solid rgba(255, 255, 255, 0.5);
    color: #FFFFFF;
    border-radius: 50%;
    width: 26px;
    height: 26px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    font-size: 12px;
    transition: background 0.15s;
}

.btn-remove-screenshot:hover {
    background: rgba(220, 38, 38, 0.9);
}

.bug-meta-box {
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.18);
    border-radius: 8px;
    padding: 8px 12px;
    margin: 10px 0 14px;
    color: rgba(255, 255, 255, 0.85);
    font-size: 0.76rem;
    line-height: 1.35;
}

.footer-bug-btn {
    color: rgba(255, 255, 255, 0.9) !important;
    font-weight: 500 !important;
}

@media (max-width: 600px) {
    .floating-bug-pill {
        bottom: calc(16px + env(safe-area-inset-bottom));
        right: 16px;
        padding: 8px 13px;
        font-size: 0.8rem;
    }
}

/* ─── Multi-Store Buy Options Modal ─────────────────────── */
.modal-card.modal-buy-options {
    max-width: 480px;
    width: 95%;
    background: #429E99;
    border: 1px solid rgba(255, 255, 255, 0.4);
    border-radius: 22px;
    padding: 26px;
    box-shadow: 0 28px 60px rgba(15, 50, 48, 0.6);
}

.buy-header-badge {
    display: inline-block;
    background: rgba(255, 255, 255, 0.16);
    border: 1px solid rgba(255, 255, 255, 0.32);
    border-radius: 9999px;
    padding: 3px 12px;
    font-size: 0.68rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    color: #FFFFFF;
    margin-bottom: 8px;
}

.buy-modal-author {
    font-size: 0.92rem;
    color: rgba(255, 255, 255, 0.85);
    margin-top: 2px;
}

.buy-stores-grid {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin: 20px 0 16px;
}

.buy-store-card {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 20px;
    background: rgba(255, 255, 255, 0.12);
    border: 1px solid rgba(255, 255, 255, 0.28);
    border-radius: 14px;
    color: #FFFFFF;
    text-decoration: none;
    transition: all 0.22s cubic-bezier(0.16, 1, 0.3, 1);
    backdrop-filter: blur(8px);
}

.buy-store-card:hover {
    background: rgba(255, 255, 255, 0.22);
    border-color: #FFFFFF;
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
}

.store-info-text {
    display: flex;
    flex-direction: column;
    gap: 3px;
    text-align: left;
}

.store-name {
    font-family: var(--ff-serif);
    font-size: 1.25rem;
    font-weight: 600;
    color: #FFFFFF;
    letter-spacing: -0.01em;
}

.store-sub {
    font-size: 0.8rem;
    color: rgba(255, 255, 255, 0.82);
    line-height: 1.3;
}

.store-action-btn {
    font-size: 0.84rem;
    font-weight: 600;
    background: rgba(255, 255, 255, 0.16);
    border: 1px solid rgba(255, 255, 255, 0.32);
    padding: 6px 12px;
    border-radius: 8px;
    white-space: nowrap;
    transition: all 0.2s ease;
}

.buy-store-card:hover .store-action-btn {
    background: #FFFFFF;
    color: #2D7874;
}

.buy-modal-notice {
    font-size: 0.74rem;
    line-height: 1.35;
    color: rgba(255, 255, 255, 0.72);
    text-align: center;
    padding-top: 4px;
}

/* Buy Modal: entrance animation */
.modal-card.modal-buy-options {
    animation: modalPop 0.28s cubic-bezier(0.16, 1, 0.3, 1);
}

/* Buy Modal: mobile bottom-sheet */
@media (max-width: 720px) {
    .modal-card.modal-buy-options {
        width: 100%;
        max-width: 100%;
        border-radius: 22px 22px 16px 16px;
        padding: 22px 18px;
        box-shadow: 0 -12px 36px rgba(0, 0, 0, 0.4);
    }

    .buy-store-card {
        padding: 14px 16px;
    }

    .store-name {
        font-size: 1.1rem;
    }
}