/* ============================================
   StyleGenie Design System
   Glassmorphism · Gradients · Micro-Animations
   ============================================ */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Newsreader:ital,opsz,wght@0,6..72,400;0,6..72,500;1,6..72,400&display=swap');

/* ── 1. Color Tokens ── */
:root {
    /* Base */
    --ds-bg: #FDFCF8;
    --ds-bg-subtle: #F7F7F4;
    --ds-surface: #FFFFFF;
    --ds-surface-hover: #FAFAF9;

    /* Text */
    --ds-text: #1A1A1A;
    --ds-text-muted: #666666;
    --ds-text-faint: #999999;

    /* Borders */
    --ds-border: #E5E5E0;
    --ds-border-hover: #D0D0CB;

    /* Accent */
    --ds-accent: #D97757;
    --ds-accent-soft: rgba(217, 119, 87, 0.12);
    --ds-accent-glow: rgba(217, 119, 87, 0.25);

    /* Gradient CTA (purple-pink) */
    --ds-gradient-start: #7c3aed;
    --ds-gradient-end: #db2777;
    --ds-gradient: linear-gradient(135deg, var(--ds-gradient-start), var(--ds-gradient-end));
    --ds-gradient-glow: rgba(124, 58, 237, 0.35);

    /* Status */
    --ds-success: #137333;
    --ds-success-bg: #E6F4EA;
    --ds-danger: #D93025;
    --ds-danger-bg: #FCE8E6;

    /* Glass */
    --ds-glass-bg: rgba(255, 255, 255, 0.65);
    --ds-glass-border: rgba(255, 255, 255, 0.3);
    --ds-glass-blur: 16px;

    /* Shadows */
    --ds-shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.04);
    --ds-shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.05);
    --ds-shadow-md: 0 4px 16px rgba(0, 0, 0, 0.08);
    --ds-shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.12);
    --ds-shadow-glow: 0 4px 20px var(--ds-gradient-glow);

    /* Animation */
    --ds-ease: cubic-bezier(0.16, 1, 0.3, 1);
    --ds-ease-bounce: cubic-bezier(0.34, 1.56, 0.64, 1);
    --ds-duration: 0.3s;
    --ds-duration-slow: 0.6s;

    /* Radius */
    --ds-radius-sm: 8px;
    --ds-radius-md: 12px;
    --ds-radius-lg: 16px;
    --ds-radius-xl: 20px;
    --ds-radius-full: 9999px;
}

/* ── 2. Dark Mode Tokens ── */
[data-theme="dark"] {
    --ds-bg: #0a0a0f;
    --ds-bg-subtle: #111118;
    --ds-surface: rgba(25, 25, 35, 0.8);
    --ds-surface-hover: rgba(35, 35, 50, 0.8);

    --ds-text: #f0f0f5;
    --ds-text-muted: #9ca3af;
    --ds-text-faint: #6b7280;

    --ds-border: rgba(255, 255, 255, 0.08);
    --ds-border-hover: rgba(255, 255, 255, 0.15);

    --ds-accent-soft: rgba(217, 119, 87, 0.15);
    --ds-accent-glow: rgba(217, 119, 87, 0.3);

    --ds-gradient-glow: rgba(124, 58, 237, 0.3);

    --ds-success: #81C995;
    --ds-success-bg: rgba(30, 58, 47, 0.6);
    --ds-danger: #F28B82;
    --ds-danger-bg: rgba(60, 30, 30, 0.6);

    --ds-glass-bg: rgba(15, 15, 25, 0.7);
    --ds-glass-border: rgba(255, 255, 255, 0.06);

    --ds-shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --ds-shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
    --ds-shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);
}

/* ── 3. Animated Background ── */
.ds-animated-bg {
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    z-index: -1;
    overflow: hidden;
    background: var(--ds-bg);
}

.ds-animated-bg::before,
.ds-animated-bg::after {
    content: '';
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.4;
    animation: ds-float 15s infinite ease-in-out alternate;
}

.ds-animated-bg::before {
    width: 400px; height: 400px;
    background: var(--ds-accent);
    top: -100px; left: -100px;
    opacity: 0.15;
}

.ds-animated-bg::after {
    width: 350px; height: 350px;
    background: var(--ds-gradient-start);
    bottom: -100px; right: -100px;
    opacity: 0.1;
    animation-delay: -7s;
}

[data-theme="dark"] .ds-animated-bg::before { opacity: 0.08; }
[data-theme="dark"] .ds-animated-bg::after { opacity: 0.06; }

/* ── 4. Glassmorphism Utilities ── */
.glass {
    background: var(--ds-glass-bg);
    backdrop-filter: blur(var(--ds-glass-blur));
    -webkit-backdrop-filter: blur(var(--ds-glass-blur));
    border: 1px solid var(--ds-glass-border);
}

.glass-card {
    background: var(--ds-glass-bg);
    backdrop-filter: blur(var(--ds-glass-blur));
    -webkit-backdrop-filter: blur(var(--ds-glass-blur));
    border: 1px solid var(--ds-glass-border);
    border-radius: var(--ds-radius-xl);
    box-shadow: var(--ds-shadow-md);
    transition: transform var(--ds-duration) var(--ds-ease),
                box-shadow var(--ds-duration) var(--ds-ease);
}

.glass-card:hover {
    box-shadow: var(--ds-shadow-lg);
}

/* ── 5. Gradient Buttons ── */
.gradient-btn {
    background: var(--ds-gradient);
    color: #fff;
    border: none;
    padding: 14px 32px;
    border-radius: var(--ds-radius-md);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    position: relative;
    overflow: hidden;
    transition: transform 0.2s var(--ds-ease), box-shadow 0.2s var(--ds-ease);
    box-shadow: 0 4px 15px var(--ds-gradient-glow);
    font-family: 'Inter', sans-serif;
}

.gradient-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px var(--ds-gradient-glow);
}

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

.gradient-btn::after {
    content: '';
    position: absolute;
    top: 0; left: -100%; width: 100%; height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    transition: left 0.5s;
}

.gradient-btn:hover::after {
    left: 100%;
}

/* ── 6. Shimmer Effect ── */
.shimmer {
    position: relative;
    overflow: hidden;
}

.shimmer::after {
    content: '';
    position: absolute;
    top: 0; left: -150%;
    width: 50%; height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.15), transparent);
    animation: ds-shimmer 3s infinite;
}

/* ── 7. Gender Toggle (Pill) ── */
.gender-toggle {
    display: inline-flex;
    background: var(--ds-bg-subtle);
    border: 1px solid var(--ds-border);
    border-radius: var(--ds-radius-full);
    padding: 4px;
    gap: 2px;
}

.gender-toggle label {
    padding: 8px 24px;
    border-radius: var(--ds-radius-full);
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.25s var(--ds-ease);
    color: var(--ds-text-muted);
    user-select: none;
    text-align: center;
}

.gender-toggle input[type="radio"] {
    display: none;
}

.gender-toggle input[type="radio"]:checked + label {
    background: var(--ds-text);
    color: var(--ds-bg);
    box-shadow: var(--ds-shadow-sm);
}

[data-theme="dark"] .gender-toggle {
    background: rgba(255,255,255,0.05);
}

/* ── 8. Frosted Navigation ── */
.frosted-nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 5%;
    background: var(--ds-glass-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--ds-border);
    position: sticky;
    top: 0;
    z-index: 100;
    transition: background 0.3s;
}

/* ── 9. Common Animations ── */
@keyframes ds-float {
    0% { transform: translate(0, 0) rotate(0deg); }
    50% { transform: translate(20px, -15px) rotate(5deg); }
    100% { transform: translate(-10px, 20px) rotate(-3deg); }
}

@keyframes ds-shimmer {
    0% { left: -150%; }
    50% { left: 150%; }
    100% { left: 150%; }
}

@keyframes ds-fadeInUp {
    from { opacity: 0; transform: translateY(20px); }
    to   { opacity: 1; transform: translateY(0); }
}

@keyframes ds-fadeIn {
    from { opacity: 0; }
    to   { opacity: 1; }
}

@keyframes ds-scaleIn {
    from { opacity: 0; transform: scale(0.95); }
    to   { opacity: 1; transform: scale(1); }
}

@keyframes ds-slideUp {
    from { transform: translateY(100%); }
    to   { transform: translateY(0); }
}

@keyframes ds-pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.6; }
}

@keyframes ds-gradient-shift {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

@keyframes ds-glow-pulse {
    0%, 100% { box-shadow: 0 4px 15px var(--ds-gradient-glow); }
    50% { box-shadow: 0 4px 30px var(--ds-gradient-glow), 0 0 60px var(--ds-gradient-glow); }
}

/* ── 10. Interactive Cards ── */
.ds-card {
    background: var(--ds-surface);
    border: 1px solid var(--ds-border);
    border-radius: var(--ds-radius-lg);
    padding: 1.5rem;
    transition: all var(--ds-duration) var(--ds-ease);
    box-shadow: var(--ds-shadow-xs);
}

.ds-card:hover {
    border-color: var(--ds-border-hover);
    transform: translateY(-3px);
    box-shadow: var(--ds-shadow-md);
}

/* Action cards with dashed border */
.ds-action-card {
    background: var(--ds-surface);
    border: 2px dashed var(--ds-border);
    border-radius: var(--ds-radius-lg);
    padding: 2rem;
    text-align: center;
    cursor: pointer;
    transition: all var(--ds-duration) var(--ds-ease);
    position: relative;
    overflow: hidden;
}

.ds-action-card::before {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--ds-gradient);
    opacity: 0;
    transition: opacity 0.3s;
    border-radius: inherit;
}

.ds-action-card:hover {
    border-color: transparent;
    transform: translateY(-2px);
    box-shadow: var(--ds-shadow-md);
    background: var(--ds-surface);
}

.ds-action-card:hover::before {
    opacity: 0.04;
}

[data-theme="dark"] .ds-action-card:hover::before {
    opacity: 0.08;
}

/* ── 11. Input Styling ── */
.ds-input {
    width: 100%;
    padding: 1rem 1rem 1rem 3rem;
    background: var(--ds-surface);
    border: 1px solid var(--ds-border);
    border-radius: var(--ds-radius-md);
    color: var(--ds-text);
    font-size: 1rem;
    font-family: 'Inter', sans-serif;
    outline: none;
    transition: border-color 0.2s, box-shadow 0.2s;
    box-sizing: border-box;
}

.ds-input:focus {
    border-color: var(--ds-accent);
    box-shadow: 0 0 0 3px var(--ds-accent-soft);
}

[data-theme="dark"] .ds-input {
    background: rgba(255,255,255,0.04);
}

/* ── 12. Result Box ── */
.ds-result-box {
    background: var(--ds-success-bg);
    border: 1px solid rgba(19, 115, 51, 0.15);
    border-radius: var(--ds-radius-xl);
    padding: 2rem;
    text-align: center;
    animation: ds-scaleIn 0.4s var(--ds-ease) forwards;
}

.ds-badge {
    display: inline-block;
    background: var(--ds-gradient);
    color: #fff;
    padding: 6px 18px;
    border-radius: var(--ds-radius-full);
    font-weight: 600;
    font-size: 0.9rem;
    letter-spacing: 0.02em;
}

/* ── 13. Back Button ── */
.ds-back-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--ds-text-muted);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.95rem;
    transition: all 0.2s var(--ds-ease);
    padding: 8px 16px;
    border-radius: var(--ds-radius-sm);
}

.ds-back-btn:hover {
    color: var(--ds-text);
    background: var(--ds-accent-soft);
}

/* ── 14. Nav Title ── */
.ds-nav-title {
    font-weight: 500;
    font-family: 'Newsreader', serif;
    font-style: italic;
    font-size: 1.2rem;
    color: var(--ds-text);
}

/* ── 15. Upload Button ── */
.ds-upload-btn {
    background: var(--ds-surface);
    border: 1px solid var(--ds-border);
    color: var(--ds-text);
    padding: 10px 24px;
    border-radius: var(--ds-radius-sm);
    font-weight: 500;
    font-family: 'Inter', sans-serif;
    cursor: pointer;
    transition: all 0.2s var(--ds-ease);
}

.ds-upload-btn:hover {
    background: var(--ds-bg-subtle);
    border-color: var(--ds-border-hover);
    transform: translateY(-1px);
}

.ds-snap-btn {
    background: var(--ds-success-bg);
    color: var(--ds-success);
    border-color: rgba(19, 115, 51, 0.15);
}

.ds-snap-btn:hover {
    background: #D4EDDA;
}

.ds-stop-btn {
    background: var(--ds-danger-bg);
    color: var(--ds-danger);
    border-color: rgba(217, 48, 37, 0.15);
}

.ds-stop-btn:hover {
    background: #F8D7DA;
}

/* ── 16. Section Header ── */
.ds-section-header {
    text-align: center;
    margin-bottom: 2.5rem;
    animation: ds-fadeInUp 0.5s var(--ds-ease) forwards;
}

.ds-section-header h1 {
    font-size: 2.2rem;
    font-weight: 500;
    margin: 0 0 0.5rem 0;
    color: var(--ds-text);
    font-family: 'Newsreader', serif;
    font-style: italic;
}

.ds-section-header p {
    color: var(--ds-text-muted);
    font-size: 1rem;
    font-weight: 400;
    margin: 0;
    line-height: 1.6;
}

/* ── 17. Responsive ── */
@media (max-width: 768px) {
    .ds-section-header h1 { font-size: 1.8rem; }
    .glass-card { padding: 1.5rem; }
}