/* =====================================================
   market.com.tw — 美化版 CSS
   設計方向：現代玻璃質感 + 深邃漸層 + 精緻細節
   ===================================================== */

/* === Google Fonts === */
@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+TC:wght@400;500;700;900&family=Space+Grotesk:wght@400;500;600;700&display=swap');

/* === CSS 變數 === */
:root {
    --primary: #6d28d9;
    --primary-light: #8b5cf6;
    --primary-dark: #4c1d95;
    --accent: #db2777;
    --accent-light: #f472b6;
    --success: #059669;
    --warning: #d97706;
    --danger: #dc2626;

    --bg: #f5f3ff;
    --bg-card: #ffffff;
    --bg-surface: #f0edff;
    --bg-elevated: #ede9ff;

    --text-primary: #1e1b4b;
    --text-secondary: #4c3d8f;
    --text-muted: #7c6fad;
    --border: rgba(109,40,217,0.18);
    --border-subtle: rgba(109,40,217,0.10);

    --glow-primary: 0 0 32px rgba(109,40,217,0.18);
    --glow-accent: 0 0 32px rgba(219,39,119,0.15);
    --shadow-card: 0 4px 24px rgba(109,40,217,0.08);
    --shadow-hover: 0 16px 48px rgba(109,40,217,0.16);

    --radius-sm: 10px;
    --radius-md: 16px;
    --radius-lg: 24px;
    --radius-xl: 32px;

    --font-body: 'Noto Sans TC', -apple-system, sans-serif;
    --font-display: 'Space Grotesk', 'Noto Sans TC', sans-serif;

    --transition: all 0.28s cubic-bezier(0.4, 0, 0.2, 1);
    --spring: all 0.35s cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* === Reset & Base === */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    font-family: var(--font-body);
    background: var(--bg);
    color: var(--text-primary);
    line-height: 1.65;
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
    /* Subtle noise texture overlay */
    background-image:
        radial-gradient(ellipse 80% 50% at 50% -20%, rgba(139,92,246,0.12) 0%, transparent 60%),
        radial-gradient(ellipse 50% 40% at 90% 80%, rgba(219,39,119,0.07) 0%, transparent 60%);
}

/* === Scrollbar === */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--primary); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--primary-light); }

/* === Header === */
.header {
    background:
        linear-gradient(135deg,
            rgba(109,40,217,0.10) 0%,
            rgba(167,139,250,0.07) 40%,
            rgba(219,39,119,0.07) 100%
        ),
        rgba(255,255,255,0.88);
    backdrop-filter: blur(24px) saturate(200%);
    -webkit-backdrop-filter: blur(24px) saturate(200%);
    color: var(--text-primary);
    padding: 0;
    position: sticky;
    top: 0;
    z-index: 100;
    border-bottom: 1px solid rgba(109,40,217,0.14);
    box-shadow:
        0 1px 0 rgba(255,255,255,0.7) inset,
        0 8px 32px rgba(109,40,217,0.12),
        0 2px 8px rgba(219,39,119,0.06);
}

/* 頂部彩虹細線 */
.header::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 3px;
    background: linear-gradient(90deg,
        #6d28d9, #8b5cf6, #ec4899, #f472b6, #8b5cf6, #6d28d9
    );
    background-size: 300% 100%;
    animation: gradientShift 5s ease infinite;
    z-index: 1;
}
@keyframes gradientShift {
    0%, 100% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
}

/* 底部柔光裝飾 */
.header::after {
    content: '';
    position: absolute;
    bottom: -1px; left: 0; right: 0;
    height: 1px;
    background: linear-gradient(90deg,
        transparent 0%,
        rgba(139,92,246,0.4) 30%,
        rgba(219,39,119,0.3) 60%,
        transparent 100%
    );
}

.header-top {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 14px 28px;
    max-width: 1400px;
    margin: 0 auto;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
    color: var(--text-primary);
}
.logo-icon {
    font-size: 28px;
    filter: drop-shadow(0 0 12px rgba(124,58,237,0.6));
    transition: var(--spring);
}
.logo:hover .logo-icon { transform: scale(1.15) rotate(-8deg); }
.logo-text {
    font-family: var(--font-display);
    font-size: 22px;
    font-weight: 700;
    letter-spacing: -0.5px;
    background: linear-gradient(135deg, var(--primary-dark), var(--primary-light));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.logo-sub {
    font-size: 11px;
    color: var(--text-muted);
    font-weight: 400;
    letter-spacing: 0.3px;
}
.user-area {
    display: flex;
    align-items: center;
    gap: 10px;
}
.user-avatar {
    width: 36px; height: 36px;
    border-radius: 50%;
    border: 2px solid rgba(124,58,237,0.5);
    cursor: pointer;
    transition: var(--spring);
    object-fit: cover;
    box-shadow: 0 0 12px rgba(124,58,237,0.3);
}
.user-avatar:hover { transform: scale(1.1); border-color: var(--primary-light); box-shadow: var(--glow-primary); }
.user-name { font-size: 13px; font-weight: 500; color: var(--text-secondary); }
.google-badge {
    background: rgba(109,40,217,0.08);
    border: 1px solid rgba(109,40,217,0.15);
    padding: 3px 10px;
    border-radius: 20px;
    font-size: 11px;
    color: var(--text-secondary);
}
.btn-login, .btn-logout {
    padding: 8px 20px;
    border: none;
    border-radius: var(--radius-xl);
    background: linear-gradient(135deg, var(--primary), var(--accent));
    color: #fff;
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    text-decoration: none;
    transition: var(--transition);
    white-space: nowrap;
    font-family: var(--font-body);
    box-shadow: 0 4px 16px rgba(109,40,217,0.28);
    letter-spacing: 0.2px;
}
.btn-login:hover, .btn-logout:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(109,40,217,0.38);
    filter: brightness(1.08);
}

/* === Navigation Tabs === */
.nav-tabs {
    display: flex;
    gap: 0;
    padding: 0 28px;
    max-width: 1400px;
    margin: 0 auto;
    border-top: 1px solid var(--border-subtle);
}
.nav-tab {
    padding: 12px 22px;
    color: var(--text-muted);
    text-decoration: none;
    font-size: 13px;
    font-weight: 600;
    border-bottom: 2px solid transparent;
    transition: var(--transition);
    cursor: pointer;
    letter-spacing: 0.2px;
    position: relative;
}
.nav-tab:hover { color: var(--text-secondary); }
.nav-tab.active {
    color: var(--primary);
    border-bottom-color: var(--primary);
    background: rgba(109,40,217,0.05);
    border-radius: var(--radius-sm) var(--radius-sm) 0 0;
}
/* Glow dot on active */
.nav-tab.active::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 50%;
    transform: translateX(-50%);
    width: 40%;
    height: 2px;
    background: var(--primary-light);
    filter: blur(4px);
}

/* === Search Section === */
.search-section {
    background: linear-gradient(160deg, #ede9ff 0%, #fdf4ff 40%, #f5f3ff 100%);
    padding: 64px 24px 56px;
    text-align: center;
    position: relative;
    overflow: hidden;
    border-bottom: 1px solid var(--border);
}
/* Background decorative orbs */
.search-section::before, .search-section::after {
    content: '';
    position: absolute;
    border-radius: 50%;
    pointer-events: none;
}
.search-section::before {
    width: 600px; height: 600px;
    background: radial-gradient(circle, rgba(139,92,246,0.18) 0%, transparent 70%);
    top: -200px; left: -100px;
    animation: orbFloat 10s ease-in-out infinite;
}
.search-section::after {
    width: 400px; height: 400px;
    background: radial-gradient(circle, rgba(219,39,119,0.12) 0%, transparent 70%);
    bottom: -100px; right: -50px;
    animation: orbFloat 12s ease-in-out infinite reverse;
}
@keyframes orbFloat {
    0%, 100% { transform: translate(0, 0) scale(1); }
    50% { transform: translate(20px, 15px) scale(1.05); }
}
.search-section h2 {
    color: var(--text-primary);
    font-family: var(--font-display);
    font-size: 34px;
    margin-bottom: 10px;
    font-weight: 700;
    position: relative;
    z-index: 1;
    letter-spacing: -0.5px;
}
.search-section .subtitle {
    color: var(--text-secondary);
    font-size: 15px;
    margin-bottom: 32px;
    position: relative;
    z-index: 1;
}
.search-box {
    max-width: 680px;
    margin: 0 auto;
    display: flex;
    gap: 0;
    background: rgba(255,255,255,0.92);
    border: 1.5px solid rgba(109,40,217,0.22);
    border-radius: 60px;
    overflow: hidden;
    box-shadow: 0 4px 24px rgba(109,40,217,0.12), 0 1px 0 rgba(255,255,255,0.8);
    position: relative;
    z-index: 1;
    backdrop-filter: blur(12px);
    transition: var(--transition);
}
.search-box:focus-within {
    border-color: rgba(109,40,217,0.55);
    box-shadow: 0 0 0 4px rgba(109,40,217,0.10), 0 8px 32px rgba(109,40,217,0.18);
}
.search-input {
    flex: 1;
    padding: 18px 28px;
    border: none;
    font-size: 15px;
    outline: none;
    background: transparent;
    color: var(--text-primary);
    font-family: var(--font-body);
}
.search-input::placeholder { color: var(--text-muted); }
.search-btn {
    padding: 16px 32px;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    color: #fff;
    border: none;
    font-size: 15px;
    font-weight: 700;
    cursor: pointer;
    transition: var(--transition);
    letter-spacing: 0.5px;
    font-family: var(--font-body);
    position: relative;
    overflow: hidden;
}
.search-btn::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(255,255,255,0.15), transparent);
    opacity: 0;
    transition: var(--transition);
}
.search-btn:hover::before { opacity: 1; }
.search-btn:hover { letter-spacing: 0.8px; }

.search-platforms {
    display: flex;
    justify-content: center;
    gap: 16px;
    margin-top: 24px;
    position: relative;
    z-index: 1;
    flex-wrap: wrap;
}
.platform-tag {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--text-secondary);
    font-size: 13px;
    font-weight: 500;
    background: rgba(255,255,255,0.75);
    border: 1px solid var(--border-subtle);
    padding: 7px 16px;
    border-radius: 20px;
    backdrop-filter: blur(8px);
    transition: var(--transition);
}
.platform-tag:hover { border-color: var(--border); color: var(--text-primary); background: #fff; }
.platform-dot {
    width: 8px; height: 8px;
    border-radius: 50%;
    display: inline-block;
}
.platform-dot.momo { background: #ff6b9d; box-shadow: 0 0 8px rgba(255,107,157,0.5); }
.platform-dot.pchome { background: #60a5fa; box-shadow: 0 0 8px rgba(96,165,250,0.5); }
.platform-dot.shopee { background: #fb923c; box-shadow: 0 0 8px rgba(251,146,60,0.5); }

/* === Search Results === */
.search-results {
    max-width: 1200px;
    margin: 28px auto;
    padding: 0 24px;
    display: none;
}
.search-results.active { display: block; }
.results-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 18px;
}
.results-header h3 {
    font-size: 16px;
    color: var(--text-secondary);
    font-weight: 600;
}
.results-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 16px;
}
.result-card {
    background: var(--bg-card);
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-card);
    transition: var(--transition);
    cursor: pointer;
    text-decoration: none;
    color: inherit;
    border: 1px solid var(--border-subtle);
}
.result-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover);
    border-color: rgba(109,40,217,0.25);
}
.result-card .platform-badge {
    display: inline-block;
    padding: 4px 12px;
    border-radius: 8px;
    font-size: 11px;
    font-weight: 700;
    color: #fff;
    margin: 14px 14px 0;
    letter-spacing: 0.5px;
}
.result-card .platform-badge.momo { background: linear-gradient(135deg, #be185d, #ec4899); }
.result-card .platform-badge.pchome { background: linear-gradient(135deg, #1d4ed8, #3b82f6); }
.result-card .platform-badge.shopee { background: linear-gradient(135deg, #c2410c, #f97316); }
.result-card .result-info { padding: 10px 16px 18px; }
.result-card .result-title {
    font-size: 13px;
    font-weight: 500;
    line-height: 1.6;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    margin-bottom: 10px;
    color: var(--text-primary);
}
.result-card .result-price {
    font-family: var(--font-display);
    font-size: 22px;
    font-weight: 700;
    color: #be185d;
    letter-spacing: -0.5px;
}
.result-card .result-price small {
    font-size: 11px;
    color: var(--text-muted);
    font-weight: 400;
}

/* === Discussion Section === */
.discussion-section {
    max-width: 1400px;
    margin: 0 auto;
    padding: 28px 28px 48px;
}
.discussion-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 24px;
    flex-wrap: wrap;
    gap: 12px;
}
.discussion-header h2 {
    font-family: var(--font-display);
    font-size: 22px;
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: -0.3px;
}
.discussion-layout {
    display: grid;
    grid-template-columns: 200px 1fr;
    gap: 24px;
}

/* === Category Filter === */
.category-filter {
    position: sticky;
    top: 105px;
    align-self: start;
}
.category-filter h3 {
    font-size: 10px;
    color: var(--text-muted);
    margin-bottom: 12px;
    text-transform: uppercase;
    letter-spacing: 2px;
    font-weight: 700;
    padding: 0 12px;
}
.cat-tag {
    display: block;
    width: 100%;
    padding: 10px 14px;
    border: 1px solid transparent;
    background: transparent;
    border-radius: var(--radius-sm);
    margin-bottom: 4px;
    font-size: 13px;
    cursor: pointer;
    text-align: left;
    transition: var(--transition);
    color: var(--text-muted);
    font-weight: 500;
    font-family: var(--font-body);
}
.cat-tag:hover {
    background: rgba(109,40,217,0.08);
    color: var(--primary);
    border-color: rgba(109,40,217,0.2);
}
.cat-tag.active {
    background: rgba(109,40,217,0.12);
    color: var(--primary);
    font-weight: 700;
    border-color: rgba(109,40,217,0.30);
    box-shadow: inset 3px 0 0 var(--primary);
}

/* === Discussion Search === */
.discussion-search {
    display: flex;
    gap: 10px;
    margin-bottom: 20px;
    align-items: center;
}
.search-input-wrapper {
    flex: 1;
    position: relative;
    display: flex;
    align-items: center;
}
.search-icon {
    position: absolute;
    left: 14px;
    font-size: 15px;
    pointer-events: none;
    opacity: 0.5;
}
.discussion-search-input {
    width: 100%;
    padding: 12px 40px 12px 42px;
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-sm);
    font-size: 14px;
    transition: var(--transition);
    background: #fff;
    color: var(--text-primary);
    outline: none;
    font-family: var(--font-body);
}
.discussion-search-input::placeholder { color: var(--text-muted); }
.discussion-search-input:focus {
    border-color: rgba(109,40,217,0.4);
    box-shadow: 0 0 0 3px rgba(109,40,217,0.08);
}
.search-clear-btn {
    position: absolute;
    right: 12px;
    background: none;
    border: none;
    font-size: 14px;
    color: var(--text-muted);
    cursor: pointer;
    padding: 4px 8px;
    border-radius: 50%;
    transition: var(--transition);
}
.search-clear-btn:hover { background: rgba(109,40,217,0.08); color: var(--text-primary); }
.btn-search-discuss {
    padding: 12px 20px;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    color: #fff;
    border: none;
    border-radius: var(--radius-sm);
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    white-space: nowrap;
    transition: var(--transition);
    box-shadow: 0 4px 16px rgba(124,58,237,0.3);
    font-family: var(--font-body);
}
.btn-search-discuss:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(124,58,237,0.4);
}
.search-result-hint {
    padding: 10px 16px;
    margin-bottom: 16px;
    background: rgba(109,40,217,0.06);
    border: 1px solid rgba(109,40,217,0.18);
    border-radius: var(--radius-sm);
    font-size: 13px;
    color: var(--primary);
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.search-result-hint button {
    background: none;
    border: none;
    color: var(--accent-light);
    cursor: pointer;
    font-weight: 600;
    font-size: 13px;
    font-family: var(--font-body);
}
.search-result-hint button:hover { text-decoration: underline; }

/* === Comment Form === */
.comment-form {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    padding: 24px;
    margin-bottom: 24px;
    box-shadow: var(--shadow-card);
    border: 1px solid var(--border-subtle);
}
.comment-form h3 {
    margin-bottom: 16px;
    font-size: 16px;
    font-weight: 700;
    color: var(--text-primary);
    font-family: var(--font-display);
}
.form-row {
    display: flex;
    gap: 10px;
    margin-bottom: 10px;
    flex-wrap: wrap;
}
.form-input, .form-select, .form-textarea {
    padding: 11px 14px;
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-sm);
    font-size: 14px;
    font-family: var(--font-body);
    transition: var(--transition);
    background: #fff;
    color: var(--text-primary);
}
.form-input::placeholder, .form-textarea::placeholder { color: var(--text-muted); }
.form-input:focus, .form-select:focus, .form-textarea:focus {
    border-color: rgba(109,40,217,0.45);
    outline: none;
    box-shadow: 0 0 0 3px rgba(109,40,217,0.10);
    background: #fff;
}
.form-select option {
    background: #fff;
    color: var(--text-primary);
}
.form-textarea {
    width: 100%;
    min-height: 80px;
    resize: vertical;
}
.form-input { flex: 1; min-width: 120px; }
.form-select { min-width: 100px; }

/* === Avatar Picker Compact === */
.form-row-avatar { align-items: center; }
.avatar-picker-compact {
    display: flex;
    align-items: center;
    gap: 10px;
}
.avatar-compact-img {
    width: 44px; height: 44px;
    border-radius: 50%;
    border: 2px solid rgba(124,58,237,0.4);
    object-fit: cover;
    cursor: pointer;
    transition: var(--spring);
    box-shadow: 0 0 12px rgba(124,58,237,0.25);
}
.avatar-compact-img:hover {
    transform: scale(1.12);
    border-color: var(--primary-light);
    box-shadow: var(--glow-primary);
}
.avatar-change-hint {
    font-size: 12px;
    color: var(--primary-light);
    cursor: pointer;
    font-weight: 600;
    transition: var(--transition);
}
.avatar-change-hint:hover { color: #fff; text-decoration: underline; }
.google-avatar-badge {
    font-size: 11px;
    color: #fff;
    background: linear-gradient(135deg, #4285f4, #34a853);
    padding: 2px 8px;
    border-radius: 10px;
    font-weight: 600;
}

/* === Avatar Modal === */
.avatar-modal {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    width: 90%;
    max-width: 480px;
    max-height: 75vh;
    overflow-y: auto;
    box-shadow: 0 24px 80px rgba(109,40,217,0.18), var(--glow-primary);
    animation: modalSlideIn 0.32s cubic-bezier(0.34, 1.56, 0.64, 1);
}
@keyframes modalSlideIn {
    from { transform: translateY(40px) scale(0.95); opacity: 0; }
    to { transform: translateY(0) scale(1); opacity: 1; }
}
.avatar-modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 18px 22px 14px;
    border-bottom: 1px solid var(--border-subtle);
}
.avatar-modal-header h3 {
    margin: 0;
    font-size: 16px;
    font-weight: 700;
    color: var(--text-primary);
}
.avatar-modal-close {
    background: rgba(109,40,217,0.06);
    border: 1px solid var(--border-subtle);
    font-size: 18px;
    color: var(--text-muted);
    cursor: pointer;
    padding: 4px 10px;
    border-radius: 8px;
    transition: var(--transition);
    line-height: 1.4;
}
.avatar-modal-close:hover { background: rgba(109,40,217,0.12); color: var(--primary); }
.avatar-modal-body { padding: 16px 22px 22px; }
.avatar-style-section { margin-bottom: 16px; }
.avatar-style-section h4 {
    font-size: 12px;
    color: var(--text-muted);
    margin-bottom: 10px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
}
.avatar-style-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 10px;
}
.avatar-style-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 5px;
    padding: 8px 4px;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: var(--spring);
    border: 1px solid transparent;
}
.avatar-style-item:hover {
    border-color: rgba(109,40,217,0.3);
    background: rgba(109,40,217,0.06);
    transform: translateY(-3px);
}
.avatar-style-item.active {
    border-color: var(--primary);
    background: rgba(109,40,217,0.10);
    box-shadow: 0 4px 16px rgba(109,40,217,0.18);
}
.avatar-style-item img {
    width: 42px; height: 42px;
    border-radius: 50%;
}
.avatar-style-item span {
    font-size: 10px;
    color: var(--text-muted);
    font-weight: 600;
    text-align: center;
}
.avatar-style-item.active span { color: var(--primary-light); }
@media (max-width: 480px) {
    .avatar-style-grid { grid-template-columns: repeat(4, 1fr); }
}

.form-actions {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
}
.btn-submit {
    padding: 11px 28px;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    color: #fff;
    border: none;
    border-radius: var(--radius-xl);
    font-size: 14px;
    font-weight: 700;
    cursor: pointer;
    transition: var(--transition);
    box-shadow: 0 4px 20px rgba(124,58,237,0.3);
    font-family: var(--font-body);
    letter-spacing: 0.3px;
}
.btn-submit:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 28px rgba(124,58,237,0.45);
}
.btn-upload {
    padding: 9px 18px;
    background: rgba(109,40,217,0.04);
    border: 1px dashed rgba(109,40,217,0.25);
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-size: 13px;
    color: var(--text-muted);
    transition: var(--transition);
    font-weight: 500;
    font-family: var(--font-body);
}
.btn-upload:hover {
    border-color: rgba(109,40,217,0.5);
    color: var(--primary);
    background: rgba(109,40,217,0.07);
}
.image-preview {
    max-width: 200px;
    max-height: 150px;
    border-radius: var(--radius-sm);
    margin-top: 8px;
    display: none;
    box-shadow: var(--shadow-card);
    border: 1px solid var(--border-subtle);
}

/* === Avatar Picker (舊版，保留相容) === */
.avatar-picker {
    display: none;
    background: var(--bg-card);
    border-radius: var(--radius-md);
    padding: 20px;
    margin-bottom: 20px;
    box-shadow: var(--shadow-card);
    border: 1px solid rgba(109,40,217,0.20);
}
.avatar-picker.show { display: block; }
.avatar-picker h4 {
    margin-bottom: 14px;
    font-size: 14px;
    color: var(--primary);
    font-weight: 700;
}
.avatar-styles { display: flex; gap: 12px; flex-wrap: wrap; }
.avatar-style-option {
    text-align: center;
    cursor: pointer;
    padding: 10px;
    border-radius: var(--radius-sm);
    border: 1px solid transparent;
    transition: var(--spring);
}
.avatar-style-option:hover { border-color: rgba(109,40,217,0.3); background: rgba(109,40,217,0.06); }
.avatar-style-option.active {
    border-color: var(--primary);
    background: rgba(109,40,217,0.10);
    box-shadow: 0 0 16px rgba(109,40,217,0.15);
}
.avatar-style-option img {
    width: 56px; height: 56px;
    border-radius: 50%;
    display: block;
    margin: 0 auto 6px;
    border: 2px solid rgba(109,40,217,0.15);
}
.avatar-style-option span { font-size: 11px; color: var(--text-muted); font-weight: 500; }

/* === Comments Grid === */
.comments-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
}

/* === Comment Card === */
.comment-card {
    background: var(--bg-card);
    border-radius: var(--radius-md);
    padding: 20px;
    box-shadow: var(--shadow-card);
    transition: var(--transition);
    border: 1px solid var(--border-subtle);
    position: relative;
    overflow: hidden;
}
/* Subtle left accent on hover */
.comment-card::before {
    content: '';
    position: absolute;
    left: 0; top: 0; bottom: 0;
    width: 3px;
    background: linear-gradient(180deg, var(--primary), var(--accent));
    opacity: 0;
    transition: var(--transition);
}
.comment-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-hover);
    border-color: rgba(109,40,217,0.20);
}
.comment-card:hover::before { opacity: 1; }

.comment-top {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 12px;
}
.comment-avatar {
    width: 42px; height: 42px;
    border-radius: 50%;
    border: 2px solid rgba(124,58,237,0.3);
    flex-shrink: 0;
    object-fit: cover;
    background: var(--bg-surface);
    transition: var(--transition);
}
.comment-card:hover .comment-avatar { border-color: rgba(124,58,237,0.6); }
.comment-user-info { flex: 1; }
.comment-username {
    font-weight: 700;
    font-size: 14px;
    display: flex;
    align-items: center;
    gap: 6px;
    color: var(--text-primary);
}
.comment-time {
    font-size: 11px;
    color: var(--text-muted);
    margin-top: 1px;
}
.comment-cat-badge {
    display: inline-block;
    padding: 3px 10px;
    border-radius: 8px;
    font-size: 11px;
    font-weight: 700;
    background: rgba(124,58,237,0.15);
    border: 1px solid rgba(124,58,237,0.25);
    color: var(--primary-light);
}
.comment-product-name {
    font-size: 12px;
    color: var(--primary-light);
    background: rgba(124,58,237,0.1);
    border: 1px solid rgba(124,58,237,0.18);
    padding: 4px 10px;
    border-radius: 8px;
    margin-bottom: 8px;
    display: inline-block;
    font-weight: 600;
}
.comment-body {
    font-size: 14px;
    line-height: 1.8;
    color: var(--text-secondary);
    margin-bottom: 12px;
    word-wrap: break-word;
}
.comment-edited {
    font-size: 11px;
    color: var(--text-muted);
    font-style: italic;
}
.comment-image {
    max-width: 100%;
    max-height: 280px;
    border-radius: var(--radius-sm);
    margin: 10px 0;
    cursor: pointer;
    box-shadow: var(--shadow-card);
    border: 1px solid var(--border-subtle);
    transition: var(--transition);
}
.comment-image:hover { transform: scale(1.01); box-shadow: var(--shadow-hover); }
.comment-actions {
    display: flex;
    gap: 4px;
    flex-wrap: wrap;
    border-top: 1px solid var(--border-subtle);
    padding-top: 12px;
    margin-top: 8px;
}
.comment-action-btn {
    padding: 5px 11px;
    border: none;
    background: transparent;
    font-size: 12px;
    cursor: pointer;
    border-radius: 8px;
    transition: var(--transition);
    color: var(--text-muted);
    font-weight: 500;
    font-family: var(--font-body);
}
.comment-action-btn:hover {
    background: rgba(109,40,217,0.07);
    color: var(--text-secondary);
}
.comment-action-btn.danger:hover {
    background: rgba(220,38,38,0.08);
    color: #dc2626;
}
.cat-change-select {
    padding: 4px 10px;
    border: 1px solid var(--border-subtle);
    border-radius: 8px;
    font-size: 12px;
    color: var(--text-muted);
    cursor: pointer;
    background: #fff;
    font-family: var(--font-body);
}

/* === Replies === */
.replies-section {
    margin-top: 14px;
    padding-left: 16px;
    border-left: 2px solid rgba(109,40,217,0.20);
}
.reply-card {
    background: rgba(109,40,217,0.03);
    border-radius: var(--radius-sm);
    padding: 12px 14px;
    margin-bottom: 8px;
    border: 1px solid var(--border-subtle);
}
.reply-card .comment-top { margin-bottom: 6px; }
.reply-card .comment-avatar { width: 30px; height: 30px; border-width: 1.5px; }
.reply-form {
    margin-top: 10px;
    display: none;
}
.reply-form.show { display: block; }
.reply-form textarea {
    width: 100%;
    padding: 12px;
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-sm);
    font-size: 13px;
    font-family: var(--font-body);
    resize: none;
    min-height: 60px;
    background: #fff;
    color: var(--text-primary);
}
.reply-form textarea::placeholder { color: var(--text-muted); }
.reply-form textarea:focus {
    border-color: rgba(109,40,217,0.4);
    outline: none;
    box-shadow: 0 0 0 3px rgba(109,40,217,0.08);
    background: #fff;
}
.reply-form .reply-actions {
    display: flex;
    justify-content: flex-end;
    gap: 8px;
    margin-top: 10px;
}
.btn-sm {
    padding: 7px 16px;
    border: none;
    border-radius: var(--radius-sm);
    font-size: 12px;
    cursor: pointer;
    font-weight: 600;
    transition: var(--transition);
    font-family: var(--font-body);
}
.btn-primary { background: linear-gradient(135deg, var(--primary), var(--accent)); color: #fff; }
.btn-secondary {
    background: rgba(109,40,217,0.06);
    border: 1px solid var(--border-subtle);
    color: var(--text-muted);
}
.btn-sm:hover { opacity: 0.88; transform: translateY(-1px); }

/* === Edit Form === */
.edit-form { display: none; margin: 8px 0; }
.edit-form.show { display: block; }
.edit-form textarea {
    width: 100%;
    padding: 12px;
    border: 1px solid rgba(109,40,217,0.30);
    border-radius: var(--radius-sm);
    font-size: 13px;
    font-family: var(--font-body);
    resize: none;
    min-height: 60px;
    background: #fff;
    color: var(--text-primary);
}
.edit-form textarea:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 3px rgba(109,40,217,0.10); }

/* === Report Modal === */
.modal-overlay {
    display: none;
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(30,27,75,0.45);
    z-index: 1000;
    align-items: center;
    justify-content: center;
    backdrop-filter: blur(8px);
}
.modal-overlay.show { display: flex; }
.modal {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 32px;
    max-width: 440px;
    width: 90%;
    box-shadow: 0 32px 80px rgba(109,40,217,0.20), var(--glow-primary);
    animation: modalSlideIn 0.32s cubic-bezier(0.34, 1.56, 0.64, 1);
}
.modal h3 {
    margin-bottom: 18px;
    font-size: 17px;
    font-weight: 700;
    color: var(--text-primary);
    font-family: var(--font-display);
}
.modal textarea {
    width: 100%;
    padding: 14px;
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-sm);
    font-size: 14px;
    font-family: var(--font-body);
    resize: none;
    min-height: 80px;
    margin-bottom: 18px;
    background: #fff;
    color: var(--text-primary);
}
.modal textarea:focus { border-color: rgba(239,68,68,0.5); outline: none; box-shadow: 0 0 0 3px rgba(239,68,68,0.1); }
.modal-actions {
    display: flex;
    justify-content: flex-end;
    gap: 10px;
}
.btn-report {
    padding: 10px 22px;
    background: linear-gradient(135deg, #dc2626, #ef4444);
    color: #fff;
    border: none;
    border-radius: var(--radius-sm);
    font-size: 14px;
    cursor: pointer;
    font-weight: 700;
    box-shadow: 0 4px 16px rgba(239,68,68,0.3);
    font-family: var(--font-body);
    transition: var(--transition);
}
.btn-report:hover { transform: translateY(-1px); box-shadow: 0 6px 20px rgba(239,68,68,0.4); }
.btn-cancel {
    padding: 10px 22px;
    background: rgba(109,40,217,0.06);
    border: 1px solid var(--border-subtle);
    color: var(--text-muted);
    border-radius: var(--radius-sm);
    font-size: 14px;
    cursor: pointer;
    font-weight: 600;
    font-family: var(--font-body);
    transition: var(--transition);
}
.btn-cancel:hover { background: rgba(109,40,217,0.12); color: var(--text-primary); }

/* === Image Lightbox === */
.lightbox {
    display: none;
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(0,0,0,0.95);
    z-index: 2000;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    backdrop-filter: blur(16px);
}
.lightbox.show { display: flex; }
.lightbox img {
    max-width: 92%;
    max-height: 92%;
    border-radius: var(--radius-md);
    box-shadow: 0 12px 60px rgba(109,40,217,0.20), var(--glow-primary);
}

/* === Loading === */
.loading {
    text-align: center;
    padding: 56px;
    color: var(--text-muted);
}
.loading-spinner {
    display: inline-block;
    width: 40px; height: 40px;
    border: 3px solid rgba(109,40,217,0.12);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 0.75s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* === Toast === */
.toast {
    position: fixed;
    bottom: 28px;
    right: 28px;
    padding: 14px 24px;
    background: #fff;
    border: 1px solid var(--border);
    color: var(--text-primary);
    border-radius: var(--radius-md);
    font-size: 14px;
    font-weight: 500;
    box-shadow: 0 12px 40px rgba(109,40,217,0.14);
    transform: translateY(20px) scale(0.95);
    opacity: 0;
    transition: all 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
    z-index: 3000;
    backdrop-filter: blur(12px);
}
.toast.show { transform: translateY(0) scale(1); opacity: 1; }
.toast.success {
    background: rgba(16,185,129,0.15);
    border-color: rgba(16,185,129,0.3);
    color: #6ee7b7;
}
.toast.error {
    background: rgba(239,68,68,0.15);
    border-color: rgba(239,68,68,0.3);
    color: #fca5a5;
}

/* === Pagination === */
.pagination {
    grid-column: 1 / -1;
    display: flex;
    justify-content: center;
    gap: 6px;
    padding: 20px 0;
}
.page-btn {
    width: 36px; height: 36px;
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-sm);
    background: var(--bg-card);
    color: var(--text-muted);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    font-size: 13px;
    font-family: var(--font-body);
}
.page-btn:hover {
    background: rgba(124,58,237,0.1);
    border-color: rgba(124,58,237,0.3);
    color: var(--primary-light);
}
.page-btn.active {
    background: linear-gradient(135deg, var(--primary), var(--accent));
    border-color: transparent;
    color: #fff;
    box-shadow: 0 4px 16px rgba(124,58,237,0.35);
}

/* === Empty State === */
.empty-state {
    text-align: center;
    padding: 72px 20px;
    color: var(--text-muted);
    grid-column: 1 / -1;
}
.empty-state .icon {
    font-size: 52px;
    margin-bottom: 16px;
    display: block;
    filter: grayscale(0.4);
}
.empty-state p { font-size: 15px; }

/* === Footer === */
.footer {
    text-align: center;
    padding: 36px;
    color: var(--text-muted);
    font-size: 13px;
    border-top: 1px solid var(--border-subtle);
    margin-top: 48px;
    background: rgba(109,40,217,0.03);
}
.footer a { color: var(--primary); text-decoration: none; }
.footer a:hover { color: var(--primary-dark); }

/* === Contact Section === */
.contact-section {
    background: linear-gradient(135deg, rgba(109,40,217,0.07), rgba(219,39,119,0.04));
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 48px 24px;
    margin-top: 40px;
}
.contact-container {
    max-width: 800px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 32px;
    align-items: start;
}
.contact-info h2 {
    color: var(--text-primary);
    font-size: 22px;
    margin-bottom: 8px;
    font-family: var(--font-display);
    font-weight: 700;
}
.contact-info p { color: var(--text-secondary); font-size: 14px; margin-bottom: 20px; }
.contact-email {
    display: flex;
    align-items: center;
    gap: 10px;
    background: rgba(109,40,217,0.05);
    border: 1px solid var(--border-subtle);
    padding: 12px 16px;
    border-radius: var(--radius-sm);
    backdrop-filter: blur(8px);
}
.contact-email .email-icon { font-size: 16px; }
.contact-email a { color: var(--primary-light); text-decoration: none; font-size: 14px; font-weight: 500; }
.contact-email a:hover { color: #fff; text-decoration: underline; }
.contact-form { display: flex; flex-direction: column; gap: 10px; }
.contact-select, .contact-input, .contact-textarea {
    padding: 12px 14px;
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-sm);
    background: #fff;
    font-size: 14px;
    font-family: var(--font-body);
    color: var(--text-primary);
    transition: var(--transition);
}
.contact-select option { background: #fff; }
.contact-select:focus, .contact-input:focus, .contact-textarea:focus {
    outline: none;
    border-color: rgba(109,40,217,0.45);
    box-shadow: 0 0 0 3px rgba(109,40,217,0.09);
    background: #fff;
}
.contact-row { display: flex; gap: 10px; }
.contact-row .contact-input { flex: 1; }
.contact-textarea { min-height: 100px; resize: vertical; }
.contact-submit {
    padding: 13px;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    color: #fff;
    border: none;
    border-radius: var(--radius-sm);
    font-size: 15px;
    font-weight: 700;
    cursor: pointer;
    transition: var(--transition);
    box-shadow: 0 4px 20px rgba(124,58,237,0.3);
    font-family: var(--font-body);
}
.contact-submit:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 28px rgba(124,58,237,0.45);
}
.contact-submit:disabled { opacity: 0.5; cursor: not-allowed; transform: none; }

/* === Comment Toggle Bar === */
.comment-toggle-bar {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    border: none;
    border-radius: var(--radius-xl);
    padding: 10px 22px;
    cursor: pointer;
    transition: var(--transition);
    user-select: none;
    font-size: 13px;
    font-weight: 600;
    color: #fff;
    box-shadow: 0 4px 20px rgba(124,58,237,0.3);
    white-space: nowrap;
    font-family: var(--font-body);
    letter-spacing: 0.3px;
}
.comment-toggle-bar:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 28px rgba(124,58,237,0.45);
}
.comment-toggle-bar:active { transform: translateY(0); }
.comment-toggle-bar .toggle-icon {
    font-size: 11px;
    color: rgba(255,255,255,0.65);
    transition: transform 0.28s ease;
}
.comment-toggle-bar .toggle-icon.open { transform: rotate(90deg); }

/* === Responsive === */
@media (max-width: 767px) {
    .header-top { padding: 12px 16px; }
    .logo-text { font-size: 18px; }
    .logo-sub { display: none; }
    .nav-tabs { padding: 0 12px; overflow-x: auto; }
    .nav-tab { padding: 10px 14px; font-size: 12px; white-space: nowrap; }

    .search-section { padding: 44px 16px 36px; }
    .search-section h2 { font-size: 24px; }
    .search-section .subtitle { font-size: 14px; }
    .search-box { flex-direction: column; border-radius: var(--radius-lg); }
    .search-input { padding: 14px 18px; }
    .search-btn { border-radius: 0 0 var(--radius-lg) var(--radius-lg); padding: 14px; }
    .search-platforms { gap: 8px; flex-wrap: wrap; }
    .platform-tag { font-size: 12px; padding: 5px 12px; }

    .discussion-section { padding: 16px; }
    .discussion-layout {
        grid-template-columns: 1fr;
        gap: 16px;
    }
    .category-filter {
        position: static;
        display: flex;
        flex-wrap: wrap;
        gap: 6px;
    }
    .category-filter h3 { display: none; }
    .cat-tag {
        width: auto;
        display: inline-block;
        padding: 8px 16px;
        font-size: 12px;
        border-radius: 20px;
        margin-bottom: 0;
    }
    .cat-tag.active { box-shadow: none; }

    .comments-grid { grid-template-columns: 1fr; }
    .comment-card { padding: 16px; }
    .comment-avatar { width: 36px; height: 36px; }

    .form-row { flex-direction: column; }
    .form-row-avatar { flex-direction: row; flex-wrap: wrap; }
    .avatar-styles { gap: 8px; }
    .avatar-style-option img { width: 48px; height: 48px; }

    .results-grid { grid-template-columns: 1fr 1fr; gap: 12px; }

    .user-name { display: none; }

    .contact-container { grid-template-columns: 1fr; gap: 20px; }
    .contact-row { flex-direction: column; }
}

@media (max-width: 480px) {
    .results-grid { grid-template-columns: 1fr; }
    .search-platforms { font-size: 12px; gap: 6px; }
}

/* === 特效：評分星星 === */
.star-rating { color: var(--warning); font-size: 14px; letter-spacing: 1px; }

/* === 特效：Loading skeleton === */
@keyframes skeleton {
    0% { background-position: -200% 0; }
    100% { background-position: 200% 0; }
}
.skeleton {
    background: linear-gradient(90deg,
        rgba(109,40,217,0.05) 25%,
        rgba(109,40,217,0.12) 50%,
        rgba(109,40,217,0.05) 75%
    );
    background-size: 200% 100%;
    animation: skeleton 1.8s ease infinite;
    border-radius: var(--radius-sm);
}