/* ═══════════════════════════════════════════════════
   Ayhan Home — Premium Mobile-First Curtain Store
   ═══════════════════════════════════════════════════ */

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

:root {
    --bg: #0a0a0f;
    --bg-card: rgba(255, 255, 255, 0.04);
    --bg-card-hover: rgba(255, 255, 255, 0.08);
    --glass: rgba(255, 255, 255, 0.06);
    --glass-border: rgba(255, 255, 255, 0.1);
    --text: #f0ece4;
    --text-muted: #a09a8e;
    --text-dim: #6b6560;
    --accent: #c9a96e;
    --accent-light: #e0ca9e;
    --accent-glow: rgba(201, 169, 110, 0.25);
    --success: #4ade80;
    --success-bg: rgba(74, 222, 128, 0.08);
    --error: #f87171;
    --radius: 16px;
    --radius-sm: 10px;
    --radius-xs: 6px;
    --shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.6);
    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);

    --font-display: 'Outfit', sans-serif;
    --font-body: 'Inter', sans-serif;
}

html {
    font-size: 16px;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--font-body);
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    min-height: 100dvh;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    background-image:
        radial-gradient(ellipse at 50% 0%, rgba(201, 169, 110, 0.05) 0%, transparent 60%),
        radial-gradient(ellipse at 80% 100%, rgba(201, 169, 110, 0.03) 0%, transparent 40%);
}

/* ── Utility ───────────────────────────────────── */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    border: 0;
}

.hidden {
    display: none !important;
}

/* ── Page wrapper ──────────────────────────────── */
.page-wrapper {
    max-width: 480px;
    margin: 0 auto;
    padding-bottom: 2rem;
}

/* ── Header ────────────────────────────────────── */
.header {
    padding: 1.25rem 1.25rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

.brand {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    text-decoration: none;
}

.brand-name {
    font-family: var(--font-display);
    font-weight: 800;
    font-size: 1.4rem;
    letter-spacing: 2.5px;
    background: linear-gradient(135deg, var(--accent), #fef0cd);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-shadow: 0 4px 12px rgba(201, 169, 110, 0.2);
    text-transform: uppercase;
}

/* ── Hero ──────────────────────────────────────── */
.hero {
    padding: 0;
    margin-bottom: 0;
}

.hero-image-wrapper {
    position: relative;
    overflow: hidden;
    max-height: 65vh;
    background: var(--bg-card);
}

.hero-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform 0.6s ease;
}

.hero-image-wrapper:hover .hero-image {
    transform: scale(1.03);
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to bottom, transparent 50%, rgba(10, 10, 15, 0.9) 100%);
    pointer-events: none;
}

.hero-image-wrapper.hero-video-mode {
    aspect-ratio: unset !important;
    max-height: none !important;
    background: #000;
    border-radius: 0;
}

/* Gallery thumbnails */
.gallery-strip {
    display: flex;
    gap: 0.4rem;
    overflow-x: auto;
    padding: 0.75rem 1rem;
    scroll-snap-type: x mandatory;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    touch-action: pan-x;
}

.gallery-strip::-webkit-scrollbar {
    display: none;
}

.gallery-thumb {
    flex: 0 0 auto;
    width: 72px;
    height: 72px;
    border-radius: 10px;
    overflow: hidden;
    border: 2px solid transparent;
    cursor: pointer;
    transition: all 0.2s;
    position: relative;
    scroll-snap-align: start;
    touch-action: pan-x;
}

.gallery-thumb:hover,
.gallery-thumb.active {
    border-color: var(--accent);
    transform: scale(1.05);
}

.gallery-thumb img,
.gallery-thumb video {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    pointer-events: none;
}

.gallery-thumb .play-badge {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 0, 0, 0.35);
    font-size: 1.4rem;
}

/* ── Product Info ──────────────────────────────── */
.product-info {
    padding: 0 1.25rem;
    margin-bottom: 1.5rem;
}

.product-name {
    font-family: var(--font-display);
    font-size: 1.7rem;
    font-weight: 700;
    line-height: 1.3;
    margin-bottom: 0.5rem;
    background: linear-gradient(135deg, var(--text), var(--accent-light));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.product-description {
    color: var(--text-muted);
    font-size: 0.95rem;
    line-height: 1.7;
}

/* ── Calculator Card ───────────────────────────── */
.calculator-card {
    margin: 0 1rem 1.5rem;
    padding: 1.75rem;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.05), rgba(255, 255, 255, 0.02));
    border: 1px solid var(--glass-border);
    border-radius: var(--radius);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    box-shadow: var(--shadow);
}

.section-title {
    font-family: var(--font-display);
    font-size: 1.2rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.25rem;
}

.section-icon {
    font-size: 1.1rem;
}

.section-subtitle {
    color: var(--text-muted);
    font-size: 0.85rem;
    margin-bottom: 1.5rem;
    line-height: 1.5;
}

/* ── Form ──────────────────────────────────────── */
.calc-form {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
}

.form-label {
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-muted);
    letter-spacing: 0.3px;
}

.input-wrapper {
    position: relative;
    display: flex;
    align-items: center;
}

.form-input {
    width: 100%;
    padding: 0.85rem 3.5rem 0.85rem 1rem;
    font-size: 1rem;
    font-family: var(--font-body);
    color: var(--text);
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-sm);
    outline: none;
    transition: var(--transition);
    -moz-appearance: textfield;
}

.form-input::-webkit-inner-spin-button,
.form-input::-webkit-outer-spin-button {
    -webkit-appearance: none;
    appearance: none;
}

.form-input:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-glow), 0 4px 20px rgba(201, 169, 110, 0.1);
}

.form-input::placeholder {
    color: var(--text-dim);
}

.input-unit {
    position: absolute;
    right: 1rem;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-dim);
    pointer-events: none;
}

/* ── Density selector ──────────────────────────── */
.density-options {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 0.5rem;
    margin-top: 0.25rem;
}

.density-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.3rem;
    padding: 0.85rem 0.5rem;
    background: rgba(255, 255, 255, 0.03);
    border: 1.5px solid var(--glass-border);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: var(--transition);
    text-align: center;
}

.density-card:hover {
    background: var(--bg-card-hover);
    border-color: rgba(201, 169, 110, 0.3);
    transform: translateY(-1px);
}

.density-card.selected {
    border-color: var(--accent);
    background: linear-gradient(135deg, rgba(201, 169, 110, 0.12), rgba(201, 169, 110, 0.05));
    box-shadow: 0 0 20px var(--accent-glow), inset 0 1px 0 rgba(255, 255, 255, 0.1);
}

.density-icon {
    font-size: 1.1rem;
    letter-spacing: 1px;
    color: var(--accent-light);
}

.density-label {
    font-family: var(--font-display);
    font-weight: 600;
    font-size: 0.9rem;
}

.density-desc {
    font-size: 0.7rem;
    color: var(--text-dim);
    line-height: 1.3;
}

/* ── Calculate Button ──────────────────────────── */
.btn-calculate {
    position: relative;
    width: 100%;
    padding: 1rem;
    margin-top: 0.5rem;
    font-family: var(--font-display);
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--bg);
    background: linear-gradient(135deg, var(--accent), var(--accent-light));
    border: none;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: var(--transition);
    overflow: hidden;
    letter-spacing: 0.5px;
}

.btn-calculate::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    opacity: 0;
    transition: opacity 0.3s;
}

.btn-calculate:hover::before {
    opacity: 1;
}

.btn-calculate:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px var(--accent-glow);
}

.btn-calculate:active {
    transform: translateY(0);
}

.btn-calculate.loading .btn-text {
    opacity: 0;
}

.btn-calculate.loading .btn-loader {
    opacity: 1;
}

.btn-loader {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.2s;
}

.btn-loader::after {
    content: '';
    width: 22px;
    height: 22px;
    border: 2.5px solid rgba(10, 10, 15, 0.3);
    border-top-color: var(--bg);
    border-radius: 50%;
    animation: spin 0.7s linear infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

/* ── Result Card ───────────────────────────────── */
.result-card {
    margin: 0 1rem 1.5rem;
    border-radius: var(--radius);
    overflow: hidden;
    animation: slideUp 0.5s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.result-inner {
    padding: 2rem 1.5rem;
    background: linear-gradient(135deg, rgba(74, 222, 128, 0.08), rgba(74, 222, 128, 0.03));
    border: 1px solid rgba(74, 222, 128, 0.15);
    border-radius: var(--radius);
    text-align: center;
    backdrop-filter: blur(8px);
}

.result-icon {
    font-size: 2.2rem;
    margin-bottom: 0.5rem;
}

.result-title {
    font-family: var(--font-display);
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--success);
    text-transform: uppercase;
    letter-spacing: 1.5px;
    margin-bottom: 0.75rem;
}

.result-main {
    font-size: 1.05rem;
    line-height: 1.6;
    margin-bottom: 1.25rem;
}

.result-main strong {
    font-family: var(--font-display);
    font-size: 2rem;
    font-weight: 700;
    color: var(--success);
    display: inline-block;
    margin: 0 0.15rem;
    text-shadow: 0 0 20px rgba(74, 222, 128, 0.3);
}

.result-details {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.6rem;
}

.detail-chip {
    display: flex;
    flex-direction: column;
    gap: 0.15rem;
    padding: 0.75rem 0.5rem;
    background: rgba(255, 255, 255, 0.04);
    border-radius: var(--radius-xs);
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.chip-label {
    font-size: 0.7rem;
    color: var(--text-dim);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.chip-value {
    font-family: var(--font-display);
    font-weight: 600;
    font-size: 0.95rem;
}

/* ── Error State ───────────────────────────────── */
.result-card.error .result-inner {
    background: linear-gradient(135deg, rgba(248, 113, 113, 0.08), rgba(248, 113, 113, 0.03));
    border-color: rgba(248, 113, 113, 0.15);
}

.result-card.error .result-icon::after {
    content: '❌';
}

.result-card.error .result-title {
    color: var(--error);
}

/* ── Footer ────────────────────────────────────── */
.footer {
    padding: 2rem 1.25rem 1rem;
    text-align: center;
    font-size: 0.75rem;
    color: var(--text-dim);
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    margin-top: 1rem;
}

/* ── Animations ────────────────────────────────── */
@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(24px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.animate-in {
    opacity: 0;
    transform: translateY(16px);
    animation: slideUp 0.6s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.delay-1 {
    animation-delay: 0.15s;
}

/* ── Form validation styling ───────────────────── */
.form-input.invalid {
    border-color: var(--error);
    box-shadow: 0 0 0 3px rgba(248, 113, 113, 0.15);
}

.form-error {
    font-size: 0.78rem;
    color: var(--error);
    margin-top: 0.2rem;
}

/* ── Responsive tweaks ─────────────────────────── */
@media (min-width: 520px) {
    .page-wrapper {
        padding-top: 1rem;
    }

    .hero {
        padding: 0 1.5rem;
    }

    .hero-image-wrapper {
        border-radius: var(--radius);
        border: 1px solid var(--glass-border);
        box-shadow: var(--shadow-lg);
    }

    .calculator-card {
        margin: 0 1.5rem 1.5rem;
        padding: 2rem;
    }

    .result-card {
        margin: 0 1.5rem 1.5rem;
    }
}

/* ── Accessibility — motion preference ─────────── */
@media (prefers-reduced-motion: reduce) {

    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        transition-duration: 0.01ms !important;
    }
}

/* ═══════════════════════════════════════════════════
   Catalog Page — Public Product Listing
   ═══════════════════════════════════════════════════ */

.catalog-wrapper {
    max-width: 960px;
    margin: 0 auto;
    padding: 0 1.25rem 2rem;
}

.catalog-header {
    padding: 1.5rem 0;
    text-align: center;
}

.catalog-tagline {
    font-size: 0.75rem;
    color: var(--text-dim);
    text-transform: uppercase;
    letter-spacing: 3px;
    margin-top: 0.35rem;
    font-weight: 500;
}

.catalog-hero {
    text-align: center;
    padding: 2.5rem 0.5rem 3rem;
}

.hero-title {
    font-family: var(--font-display);
    font-size: 2.2rem;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 0.75rem;
    background: linear-gradient(135deg, var(--text), var(--accent-light));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-desc {
    color: var(--text-muted);
    font-size: 1rem;
    max-width: 520px;
    margin: 0 auto;
    line-height: 1.7;
}

/* ── Catalog Grid ──────────────────────────────── */
.catalog-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1.5rem;
}

.catalog-card {
    display: block;
    text-decoration: none;
    color: inherit;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.05), rgba(255, 255, 255, 0.02));
    border: 1px solid var(--glass-border);
    border-radius: var(--radius);
    overflow: hidden;
    transition: var(--transition);
    position: relative;
}

.catalog-card::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, transparent, rgba(201, 169, 110, 0.05));
    opacity: 0;
    transition: opacity 0.4s;
    z-index: 1;
    pointer-events: none;
}

.catalog-card:hover::before {
    opacity: 1;
}

.catalog-card:hover {
    border-color: var(--accent);
    transform: translateY(-4px);
    box-shadow: 0 16px 48px rgba(0, 0, 0, 0.5), 0 0 24px var(--accent-glow);
}

.catalog-card-image {
    aspect-ratio: 4 / 3;
    overflow: hidden;
    background: rgba(255, 255, 255, 0.02);
}

.catalog-card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.catalog-card:hover .catalog-card-image img {
    transform: scale(1.06);
}

.catalog-card-body {
    padding: 1.15rem 1.25rem 1.25rem;
    position: relative;
    z-index: 2;
}

.catalog-card-title {
    font-family: var(--font-display);
    font-size: 1.15rem;
    font-weight: 600;
    margin-bottom: 0.3rem;
}

.catalog-card-desc {
    font-size: 0.82rem;
    color: var(--text-muted);
    line-height: 1.5;
    margin-bottom: 0.75rem;
}

.catalog-card-cta {
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--accent);
    transition: color var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
}

.catalog-card:hover .catalog-card-cta {
    color: var(--accent-light);
}

.catalog-empty {
    text-align: center;
    padding: 5rem 2rem;
    color: var(--text-muted);
    font-size: 1rem;
    background: var(--bg-card);
    border: 1px dashed var(--glass-border);
    border-radius: var(--radius);
}

@media (max-width: 400px) {
    .catalog-grid {
        grid-template-columns: 1fr;
    }

    .hero-title {
        font-size: 1.6rem;
    }
}

/* Price pill badge */
.price-pill {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 600;
    padding: 0.2rem 0.5rem;
    background: rgba(201, 169, 110, 0.15);
    color: var(--accent);
    border-radius: 100px;
    margin-bottom: 0.3rem;
}