/* ================================================================
   YiwuPage Design System v2 — Glass Business Portal
   glass-ui.css | Phase 14.3.2.5 | 2026-07-23
   
   Premium Glassmorphism + B2B Directory
   Apple Vision Pro UI / Korean Portal Member Center
   ================================================================ */

/* ─────────────────────────────────────────────
   0. CSS Variables (Design Tokens)
   ───────────────────────────────────────────── */
:root {
    /* Glass */
    --glass-bg: rgba(255, 255, 255, 0.72);
    --glass-bg-strong: rgba(255, 255, 255, 0.85);
    --glass-bg-subtle: rgba(255, 255, 255, 0.55);
    --glass-border: rgba(255, 255, 255, 0.45);
    --glass-border-strong: rgba(255, 255, 255, 0.7);
    --glass-blur: 18px;
    --glass-blur-heavy: 25px;
    --glass-shadow: 0 8px 32px rgba(15, 23, 42, 0.08);
    --glass-shadow-hover: 0 16px 48px rgba(15, 23, 42, 0.12);
    --glass-radius: 20px;
    --glass-radius-sm: 12px;
    --glass-radius-lg: 28px;

    /* Brand */
    --brand-primary: #1a56db;
    --brand-primary-light: #3b82f6;
    --brand-secondary: #0ea5e9;
    --brand-gradient: linear-gradient(135deg, #0ea5e9, #1a56db);
    --brand-gradient-soft: linear-gradient(135deg, rgba(14,165,233,0.1), rgba(26,86,219,0.08));

    /* VIP Gold */
    --gold-bg: linear-gradient(135deg, rgba(255,215,100,0.25), rgba(255,255,255,0.8));
    --gold-border: rgba(245, 158, 11, 0.4);
    --gold-shadow: 0 8px 32px rgba(245, 158, 11, 0.1);
    --gold-text: #b45309;

    /* Text */
    --text-primary: #1a1a2e;
    --text-secondary: #475569;
    --text-muted: #94a3b8;
    --text-inverse: #ffffff;

    /* Spacing */
    --space-xs: 4px;
    --space-sm: 8px;
    --space-md: 16px;
    --space-lg: 24px;
    --space-xl: 32px;
    --space-2xl: 48px;

    /* Transition */
    --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
    --duration-fast: 200ms;
    --duration-normal: 300ms;
    --duration-slow: 500ms;
}

/* ─────────────────────────────────────────────
   1. Page Background (Blue + Gold commercial)
   ───────────────────────────────────────────── */
body.glass-portal,
body.glass-portal main {
    background:
        radial-gradient(circle at top left, #e0f2fe, transparent 35%),
        radial-gradient(circle at bottom right, #fef3c7, transparent 30%),
        #f8fafc;
    min-height: 100vh;
}

/* ─────────────────────────────────────────────
   2. Glass Card (Base)
   ───────────────────────────────────────────── */
.glass-card {
    background: var(--glass-bg);
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    border: 1px solid var(--glass-border);
    box-shadow: var(--glass-shadow);
    border-radius: var(--glass-radius);
    padding: var(--space-lg);
    transition: transform var(--duration-normal) var(--ease-out),
                box-shadow var(--duration-normal) var(--ease-out);
}

.glass-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--glass-shadow-hover);
}

.glass-card--flat:hover {
    transform: none;
}

.glass-card--strong {
    background: var(--glass-bg-strong);
    border-color: var(--glass-border-strong);
}

.glass-card--subtle {
    background: var(--glass-bg-subtle);
}

/* ─────────────────────────────────────────────
   3. Glass Button
   ───────────────────────────────────────────── */
.glass-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: 12px 28px;
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-inverse);
    background: var(--brand-gradient);
    border: none;
    border-radius: var(--glass-radius-sm);
    cursor: pointer;
    transition: all var(--duration-normal) var(--ease-out);
    text-decoration: none;
    box-shadow: 0 4px 14px rgba(26, 86, 219, 0.25);
}

.glass-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(26, 86, 219, 0.35);
    color: var(--text-inverse);
}

.glass-button:active {
    transform: translateY(0);
}

.glass-button--outline {
    background: transparent;
    color: var(--brand-primary);
    border: 1.5px solid var(--brand-primary);
    box-shadow: none;
}

.glass-button--outline:hover {
    background: rgba(26, 86, 219, 0.06);
    box-shadow: 0 4px 14px rgba(26, 86, 219, 0.1);
}

.glass-button--gold {
    background: linear-gradient(135deg, #f59e0b, #d97706);
    box-shadow: 0 4px 14px rgba(245, 158, 11, 0.3);
}

.glass-button--gold:hover {
    box-shadow: 0 8px 24px rgba(245, 158, 11, 0.4);
}

.glass-button--lg {
    padding: 16px 36px;
    font-size: 1.05rem;
    border-radius: var(--glass-radius);
}

.glass-button--sm {
    padding: 8px 18px;
    font-size: 0.82rem;
    border-radius: 8px;
}

/* ─────────────────────────────────────────────
   4. Glass Input
   ───────────────────────────────────────────── */
.glass-input {
    width: 100%;
    padding: 14px 18px;
    font-size: 0.95rem;
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.6);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1.5px solid rgba(203, 213, 225, 0.6);
    border-radius: var(--glass-radius-sm);
    outline: none;
    transition: all var(--duration-fast) ease;
}

.glass-input:focus {
    border-color: var(--brand-primary);
    background: rgba(255, 255, 255, 0.85);
    box-shadow: 0 0 0 3px rgba(26, 86, 219, 0.1);
}

.glass-input::placeholder {
    color: var(--text-muted);
}

.glass-select {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23475569' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 16px center;
    padding-right: 40px;
}

/* ─────────────────────────────────────────────
   5. Glass Modal (Login / Register)
   ───────────────────────────────────────────── */
.glass-modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(15, 23, 42, 0.4);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    opacity: 0;
    visibility: hidden;
    transition: all var(--duration-normal) var(--ease-out);
}

.glass-modal-overlay.active {
    opacity: 1;
    visibility: visible;
}

.glass-modal {
    background: rgba(255, 255, 255, 0.65);
    backdrop-filter: blur(var(--glass-blur-heavy));
    -webkit-backdrop-filter: blur(var(--glass-blur-heavy));
    border: 1px solid var(--glass-border-strong);
    border-radius: var(--glass-radius-lg);
    box-shadow: 0 24px 80px rgba(15, 23, 42, 0.15);
    padding: var(--space-2xl);
    width: 90%;
    max-width: 420px;
    transform: scale(0.95) translateY(20px);
    transition: transform var(--duration-normal) var(--ease-out);
    position: relative;
}

.glass-modal-overlay.active .glass-modal {
    transform: scale(1) translateY(0);
}

.glass-modal__logo {
    text-align: center;
    margin-bottom: var(--space-lg);
}

.glass-modal__title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    text-align: center;
    margin-bottom: var(--space-xl);
}

.glass-modal__form {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.glass-modal__footer {
    text-align: center;
    margin-top: var(--space-lg);
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.glass-modal__footer a {
    color: var(--brand-primary);
    text-decoration: none;
    font-weight: 600;
}

.glass-modal__close {
    position: absolute;
    top: 16px;
    right: 16px;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255,255,255,0.5);
    border: none;
    border-radius: 50%;
    cursor: pointer;
    font-size: 1.2rem;
    color: var(--text-secondary);
    transition: all var(--duration-fast);
}

.glass-modal__close:hover {
    background: rgba(255,255,255,0.8);
    color: var(--text-primary);
}

/* ─────────────────────────────────────────────
   6. VIP Gold Glass Card
   ───────────────────────────────────────────── */
.glass-vip {
    background: var(--gold-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--gold-border);
    border-radius: var(--glass-radius);
    box-shadow: var(--gold-shadow);
    padding: var(--space-lg);
    position: relative;
    overflow: hidden;
    transition: all var(--duration-normal) var(--ease-out);
}

.glass-vip::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -50%;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle, rgba(255,215,100,0.15) 0%, transparent 70%);
    pointer-events: none;
}

.glass-vip:hover {
    transform: translateY(-4px);
    box-shadow: 0 16px 48px rgba(245, 158, 11, 0.18);
}

.glass-vip__badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    font-size: 0.72rem;
    font-weight: 700;
    color: var(--gold-text);
    background: rgba(245, 158, 11, 0.12);
    padding: 3px 10px;
    border-radius: 20px;
    margin-bottom: var(--space-sm);
}

.glass-vip__title {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--space-sm);
}

.glass-vip__features {
    list-style: none;
    padding: 0;
    margin: var(--space-md) 0;
}

.glass-vip__features li {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-size: 0.85rem;
    color: var(--text-secondary);
    padding: 4px 0;
}

.glass-vip__features li::before {
    content: '✓';
    color: var(--gold-text);
    font-weight: 700;
}

/* ─────────────────────────────────────────────
   7. Glass Ad Card
   ───────────────────────────────────────────── */
.glass-ad {
    background: rgba(241, 245, 249, 0.7);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px dashed rgba(148, 163, 184, 0.5);
    border-radius: var(--glass-radius);
    padding: var(--space-md);
    position: relative;
}

.glass-ad__label {
    position: absolute;
    top: 8px;
    right: 8px;
    font-size: 0.6rem;
    font-weight: 600;
    background: rgba(100, 116, 139, 0.15);
    color: var(--text-muted);
    padding: 2px 8px;
    border-radius: 4px;
    letter-spacing: 0.5px;
}

.glass-ad__title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--space-xs);
}

.glass-ad__desc {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

/* ─────────────────────────────────────────────
   8. Pricing Cards (Advertise Page)
   ───────────────────────────────────────────── */
.glass-pricing {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--space-lg);
    padding: var(--space-xl) 0;
}

.glass-pricing-card {
    background: var(--glass-bg);
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    border: 1px solid var(--glass-border);
    border-radius: var(--glass-radius);
    padding: var(--space-xl);
    text-align: center;
    transition: all var(--duration-normal) var(--ease-out);
    position: relative;
}

.glass-pricing-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--glass-shadow-hover);
}

.glass-pricing-card--featured {
    background: var(--gold-bg);
    border-color: var(--gold-border);
    box-shadow: var(--gold-shadow);
}

.glass-pricing-card--featured::after {
    content: '인기';
    position: absolute;
    top: -1px;
    left: 50%;
    transform: translateX(-50%);
    background: linear-gradient(135deg, #f59e0b, #d97706);
    color: white;
    font-size: 0.7rem;
    font-weight: 700;
    padding: 4px 16px;
    border-radius: 0 0 8px 8px;
}

.glass-pricing__name {
    font-size: 0.85rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--text-muted);
    margin-bottom: var(--space-sm);
}

.glass-pricing__price {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--text-primary);
    margin-bottom: var(--space-md);
}

.glass-pricing__price small {
    font-size: 0.85rem;
    font-weight: 400;
    color: var(--text-secondary);
}

.glass-pricing__features {
    list-style: none;
    padding: 0;
    margin: 0 0 var(--space-lg);
    text-align: left;
}

.glass-pricing__features li {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: 8px 0;
    font-size: 0.9rem;
    color: var(--text-secondary);
    border-bottom: 1px solid rgba(226, 232, 240, 0.5);
}

.glass-pricing__features li:last-child {
    border-bottom: none;
}

.glass-pricing__features li::before {
    content: '✓';
    color: var(--brand-primary);
    font-weight: 700;
}

/* ─────────────────────────────────────────────
   9. Glass Hero Section
   ───────────────────────────────────────────── */
.glass-hero {
    background: linear-gradient(
        135deg,
        rgba(255,255,255,0.85),
        rgba(240,249,255,0.65)
    );
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    border-bottom: 1px solid var(--glass-border);
    padding: var(--space-2xl) 0;
    position: relative;
    overflow: hidden;
}

.glass-hero::before {
    content: '';
    position: absolute;
    top: -100px;
    right: -100px;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(14,165,233,0.08) 0%, transparent 70%);
    pointer-events: none;
}

.glass-hero__title {
    font-size: 2.2rem;
    font-weight: 800;
    color: var(--text-primary);
    margin-bottom: var(--space-md);
    line-height: 1.3;
}

.glass-hero__subtitle {
    font-size: 1.1rem;
    color: var(--text-secondary);
    max-width: 640px;
    line-height: 1.6;
}

/* ─────────────────────────────────────────────
   10. Glass List Item (Directory)
   ───────────────────────────────────────────── */
.glass-list-item {
    background: rgba(255, 255, 255, 0.55);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid rgba(226, 232, 240, 0.5);
    border-radius: var(--glass-radius-sm);
    padding: var(--space-md) var(--space-lg);
    display: flex;
    align-items: center;
    gap: var(--space-md);
    transition: all var(--duration-fast) var(--ease-out);
}

.glass-list-item:hover {
    background: rgba(255, 255, 255, 0.75);
    border-color: var(--brand-primary-light);
    box-shadow: 0 4px 16px rgba(26, 86, 219, 0.06);
}

.glass-list-item__logo {
    width: 56px;
    height: 56px;
    border-radius: 12px;
    background: var(--glass-bg-strong);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    flex-shrink: 0;
}

.glass-list-item__info {
    flex: 1;
    min-width: 0;
}

.glass-list-item__name {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 2px;
}

.glass-list-item__meta {
    font-size: 0.82rem;
    color: var(--text-secondary);
}

.glass-list-item__actions {
    display: flex;
    gap: var(--space-sm);
}

/* ─────────────────────────────────────────────
   11. Sticky Ad (Scroll Tracking)
   ───────────────────────────────────────────── */
.glass-sticky-ad {
    position: fixed;
    z-index: 100;
    width: 160px;
    background: var(--glass-bg-strong);
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    border: 1px solid var(--glass-border);
    border-radius: var(--glass-radius-sm);
    box-shadow: var(--glass-shadow);
    padding: var(--space-md);
    opacity: 0;
    transform: translateX(-20px);
    transition: all var(--duration-normal) var(--ease-out);
    pointer-events: none;
}

.glass-sticky-ad--left {
    left: 20px;
    top: 50%;
    transform: translateY(-50%) translateX(-20px);
}

.glass-sticky-ad--right {
    right: 20px;
    top: 50%;
    transform: translateY(-50%) translateX(20px);
}

.glass-sticky-ad.visible {
    opacity: 1;
    transform: translateY(-50%) translateX(0);
    pointer-events: auto;
}

.glass-sticky-ad__close {
    position: absolute;
    top: 4px;
    right: 4px;
    width: 20px;
    height: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0,0,0,0.05);
    border: none;
    border-radius: 50%;
    cursor: pointer;
    font-size: 0.7rem;
    color: var(--text-muted);
}

.glass-sticky-ad__content {
    text-align: center;
}

.glass-sticky-ad__title {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--space-sm);
}

.glass-sticky-ad__cta {
    display: block;
    width: 100%;
    padding: 8px;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-inverse);
    background: var(--brand-gradient);
    border: none;
    border-radius: 8px;
    cursor: pointer;
    text-decoration: none;
    text-align: center;
}

/* ─────────────────────────────────────────────
   12. Utility Classes
   ───────────────────────────────────────────── */
.glass-divider {
    height: 1px;
    background: linear-gradient(to right, transparent, rgba(203,213,225,0.5), transparent);
    margin: var(--space-lg) 0;
}

.glass-badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    font-size: 0.72rem;
    font-weight: 600;
    padding: 3px 10px;
    border-radius: 20px;
    background: rgba(26, 86, 219, 0.08);
    color: var(--brand-primary);
}

.glass-badge--success {
    background: rgba(16, 185, 129, 0.1);
    color: #059669;
}

.glass-badge--warning {
    background: rgba(245, 158, 11, 0.1);
    color: #b45309;
}

.glass-float-cta {
    position: fixed;
    bottom: 20px;
    right: 20px;
    z-index: 1000;
}

.glass-float-cta .glass-button {
    border-radius: 50px;
    padding: 14px 24px;
    box-shadow: 0 8px 32px rgba(26, 86, 219, 0.3);
}

/* ─────────────────────────────────────────────
   13. Mobile Responsive
   ───────────────────────────────────────────── */
@media (max-width: 768px) {
    .glass-card {
        border-radius: var(--glass-radius-sm);
        padding: var(--space-md);
    }

    .glass-hero__title {
        font-size: 1.6rem;
    }

    .glass-hero__subtitle {
        font-size: 0.95rem;
    }

    .glass-modal {
        width: 95%;
        padding: var(--space-lg);
        border-radius: var(--glass-radius);
    }

    .glass-pricing {
        grid-template-columns: 1fr;
    }

    .glass-list-item {
        flex-direction: column;
        text-align: center;
    }

    .glass-list-item__actions {
        width: 100%;
        justify-content: center;
    }

    .glass-float-cta {
        bottom: 16px;
        right: 16px;
    }

    .glass-sticky-ad {
        display: none;
    }
}

/* ─────────────────────────────────────────────
   14. Animations
   ───────────────────────────────────────────── */
@keyframes glass-fade-in {
    from {
        opacity: 0;
        transform: translateY(16px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes glass-shimmer {
    0% { background-position: -200% center; }
    100% { background-position: 200% center; }
}

.glass-animate-in {
    animation: glass-fade-in var(--duration-slow) var(--ease-out) both;
}

.glass-shimmer {
    background: linear-gradient(
        90deg,
        transparent 30%,
        rgba(255,255,255,0.4) 50%,
        transparent 70%
    );
    background-size: 200% 100%;
    animation: glass-shimmer 3s infinite;
}