/**
 * ClawdFlix Design System
 * Sleek, cinematic, crypto-native
 */

/* ============================================
   CSS Variables / Design Tokens
   ============================================ */
:root {
    /* Colors - Cinematic purple/blue gradient vibe */
    --color-bg: #0a0a0f;
    --color-surface-1: #12121a;
    --color-surface-2: #1a1a25;
    --color-surface-3: #222230;
    
    --color-primary: #8b5cf6;
    --color-primary-hover: #a78bfa;
    --color-primary-muted: rgba(139, 92, 246, 0.15);
    
    --color-secondary: #ec4899;
    --color-secondary-hover: #f472b6;
    --color-secondary-muted: rgba(236, 72, 153, 0.15);
    
    --color-accent: #06b6d4;
    --color-accent-muted: rgba(6, 182, 212, 0.15);
    
    --color-success: #10b981;
    --color-success-muted: rgba(16, 185, 129, 0.15);
    
    --color-warning: #f59e0b;
    --color-warning-muted: rgba(245, 158, 11, 0.15);
    
    --color-error: #ef4444;
    --color-error-muted: rgba(239, 68, 68, 0.15);
    
    --color-text: #f8fafc;
    --color-text-secondary: #94a3b8;
    --color-text-muted: #64748b;
    
    --color-border: #2d2d3a;
    --color-border-hover: #3d3d4a;
    
    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #8b5cf6 0%, #ec4899 100%);
    --gradient-glow: linear-gradient(135deg, rgba(139, 92, 246, 0.4) 0%, rgba(236, 72, 153, 0.4) 100%);
    --gradient-card: linear-gradient(180deg, rgba(255,255,255,0.05) 0%, rgba(255,255,255,0) 100%);
    
    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
    
    --text-xs: 0.75rem;
    --text-sm: 0.875rem;
    --text-base: 1rem;
    --text-lg: 1.125rem;
    --text-xl: 1.25rem;
    --text-2xl: 1.5rem;
    --text-3xl: 1.875rem;
    --text-4xl: 2.25rem;
    --text-5xl: 3rem;
    
    --font-normal: 400;
    --font-medium: 500;
    --font-semibold: 600;
    --font-bold: 700;
    
    /* Spacing */
    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-5: 1.25rem;
    --space-6: 1.5rem;
    --space-8: 2rem;
    --space-10: 2.5rem;
    --space-12: 3rem;
    --space-16: 4rem;
    --space-20: 5rem;
    
    /* Borders */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;
    --radius-full: 9999px;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 40px rgba(139, 92, 246, 0.3);
    --shadow-glow-pink: 0 0 40px rgba(236, 72, 153, 0.3);
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 400ms ease;
    --transition-spring: 500ms cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* ============================================
   Base Styles
   ============================================ */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-primary);
    background: var(--color-bg);
    color: var(--color-text);
    line-height: 1.6;
    min-height: 100vh;
}

a {
    color: var(--color-primary);
    text-decoration: none;
    transition: color var(--transition-fast);
}
a:hover {
    color: var(--color-primary-hover);
}

/* ============================================
   Layout
   ============================================ */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-6);
}

.container--narrow {
    max-width: 600px;
}

.container--wide {
    max-width: 1400px;
}

/* ============================================
   Header
   ============================================ */
.header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(10, 10, 15, 0.8);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--color-border);
    padding: var(--space-4) var(--space-6);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.header__logo {
    font-size: var(--text-xl);
    font-weight: var(--font-bold);
    color: var(--color-text);
    display: flex;
    align-items: center;
    gap: var(--space-2);
}
.header__logo span {
    color: var(--color-primary); /* Fallback */
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
@supports not (-webkit-background-clip: text) {
    .header__logo span {
        color: var(--color-primary);
        background: none;
    }
}

.header__nav {
    display: flex;
    gap: var(--space-6);
}
.header__nav a {
    color: var(--color-text-secondary);
    font-size: var(--text-sm);
    font-weight: var(--font-medium);
    transition: color var(--transition-fast);
}
.header__nav a:hover,
.header__nav a.active {
    color: var(--color-text);
}

/* ============================================
   Buttons
   ============================================ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-6);
    font-family: var(--font-primary);
    font-size: var(--text-sm);
    font-weight: var(--font-semibold);
    border-radius: var(--radius-lg);
    border: none;
    cursor: pointer;
    transition: all var(--transition-base);
    text-decoration: none;
}

.btn--primary {
    background: var(--gradient-primary);
    color: white;
    box-shadow: var(--shadow-glow);
}
.btn--primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 0 60px rgba(139, 92, 246, 0.5);
}

.btn--secondary {
    background: var(--color-surface-2);
    color: var(--color-text);
    border: 1px solid var(--color-border);
}
.btn--secondary:hover {
    background: var(--color-surface-3);
    border-color: var(--color-border-hover);
}

.btn--ghost {
    background: transparent;
    color: var(--color-text-secondary);
}
.btn--ghost:hover {
    color: var(--color-text);
    background: var(--color-surface-1);
}

.btn--lg {
    padding: var(--space-4) var(--space-8);
    font-size: var(--text-base);
    border-radius: var(--radius-xl);
}

.btn--xl {
    padding: var(--space-5) var(--space-10);
    font-size: var(--text-lg);
    border-radius: var(--radius-xl);
}

.btn--full {
    width: 100%;
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none !important;
}

/* Wallet button special styling */
.btn--wallet {
    background: var(--color-surface-2);
    border: 1px solid var(--color-border);
    padding: var(--space-4) var(--space-6);
    border-radius: var(--radius-xl);
    display: flex;
    align-items: center;
    gap: var(--space-3);
}
.btn--wallet:hover {
    border-color: var(--color-primary);
    box-shadow: 0 0 20px rgba(139, 92, 246, 0.2);
}
.btn--wallet img {
    width: 24px;
    height: 24px;
}

/* ============================================
   Cards
   ============================================ */
.card {
    background: var(--color-surface-1);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    padding: var(--space-6);
    transition: all var(--transition-base);
}

.card:hover {
    border-color: var(--color-border-hover);
}

.card--glow {
    position: relative;
}
.card--glow::before {
    content: '';
    position: absolute;
    inset: -1px;
    border-radius: var(--radius-xl);
    background: var(--gradient-primary);
    z-index: -1;
    opacity: 0;
    transition: opacity var(--transition-base);
}
.card--glow:hover::before {
    opacity: 1;
}

.card--glass {
    background: rgba(18, 18, 26, 0.6);
    backdrop-filter: blur(20px);
}

/* ============================================
   Payment Card (special)
   ============================================ */
.payment-card {
    background: var(--color-surface-1);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-2xl);
    padding: var(--space-8);
    max-width: 480px;
    margin: 0 auto;
    position: relative;
    overflow: hidden;
}

.payment-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient-primary);
}

.payment-card__header {
    text-align: center;
    margin-bottom: var(--space-8);
}

.payment-card__title {
    font-size: var(--text-2xl);
    font-weight: var(--font-bold);
    margin-bottom: var(--space-2);
}

.payment-card__subtitle {
    color: var(--color-text-secondary);
    font-size: var(--text-sm);
}

.payment-card__price {
    text-align: center;
    margin-bottom: var(--space-8);
}

.payment-card__amount {
    font-size: var(--text-5xl);
    font-weight: var(--font-bold);
    color: var(--color-primary); /* Fallback for browsers without gradient text */
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
@supports not (-webkit-background-clip: text) {
    .payment-card__amount {
        color: var(--color-primary);
        background: none;
    }
}

.payment-card__currency {
    font-size: var(--text-xl);
    color: var(--color-text-secondary);
    margin-left: var(--space-2);
}

.payment-card__period {
    color: var(--color-text-muted);
    font-size: var(--text-sm);
}

/* ============================================
   Wallet Connect Section
   ============================================ */
.wallet-section {
    margin-bottom: var(--space-6);
}

.wallet-options {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

.wallet-btn {
    display: flex;
    align-items: center;
    gap: var(--space-4);
    padding: var(--space-4) var(--space-5);
    background: var(--color-surface-2);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    cursor: pointer;
    transition: all var(--transition-base);
    width: 100%;
    text-align: left;
}

.wallet-btn:hover {
    border-color: var(--color-primary);
    background: var(--color-surface-3);
    transform: translateX(4px);
}

.wallet-btn__icon {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--text-xl);
}

.wallet-btn__icon--phantom {
    background: linear-gradient(135deg, #ab9ff2 0%, #534bb1 100%);
}

.wallet-btn__icon--solflare {
    background: linear-gradient(135deg, #fc8c03 0%, #fc4503 100%);
}

.wallet-btn__icon--copy {
    background: var(--color-surface-3);
}

.wallet-btn__info h4 {
    font-size: var(--text-base);
    font-weight: var(--font-semibold);
    margin-bottom: 2px;
}

.wallet-btn__info span {
    font-size: var(--text-xs);
    color: var(--color-text-muted);
}

/* ============================================
   Transaction Status
   ============================================ */
.tx-status {
    padding: var(--space-6);
    border-radius: var(--radius-xl);
    text-align: center;
}

.tx-status--pending {
    background: var(--color-warning-muted);
    border: 1px solid rgba(245, 158, 11, 0.3);
}

.tx-status--success {
    background: var(--color-success-muted);
    border: 1px solid rgba(16, 185, 129, 0.3);
}

.tx-status--error {
    background: var(--color-error-muted);
    border: 1px solid rgba(239, 68, 68, 0.3);
}

.tx-status__icon {
    font-size: var(--text-4xl);
    margin-bottom: var(--space-4);
}

.tx-status__title {
    font-size: var(--text-lg);
    font-weight: var(--font-semibold);
    margin-bottom: var(--space-2);
}

.tx-status__message {
    color: var(--color-text-secondary);
    font-size: var(--text-sm);
}

/* Spinner animation */
.spinner {
    width: 48px;
    height: 48px;
    border: 3px solid var(--color-surface-3);
    border-top-color: var(--color-primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto var(--space-4);
}

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

/* ============================================
   Features List
   ============================================ */
.features {
    margin: var(--space-6) 0;
}

.features__item {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-3) 0;
    color: var(--color-text-secondary);
    font-size: var(--text-sm);
}

.features__item::before {
    content: '✓';
    color: var(--color-success);
    font-weight: var(--font-bold);
}

/* ============================================
   Divider
   ============================================ */
.divider {
    display: flex;
    align-items: center;
    gap: var(--space-4);
    margin: var(--space-6) 0;
    color: var(--color-text-muted);
    font-size: var(--text-xs);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.divider::before,
.divider::after {
    content: '';
    flex: 1;
    height: 1px;
    background: var(--color-border);
}

/* ============================================
   Input / Copy Field
   ============================================ */
.copy-field {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    background: var(--color-surface-2);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-3) var(--space-4);
}

.copy-field__value {
    flex: 1;
    font-family: var(--font-mono);
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.copy-field__btn {
    padding: var(--space-2) var(--space-3);
    background: var(--color-surface-3);
    border: none;
    border-radius: var(--radius-md);
    color: var(--color-text);
    font-size: var(--text-xs);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.copy-field__btn:hover {
    background: var(--color-primary);
}

/* ============================================
   Responsive
   ============================================ */
@media (max-width: 768px) {
    .header {
        padding: var(--space-3) var(--space-4);
    }
    
    .header__nav {
        display: none;
    }
    
    .payment-card {
        padding: var(--space-6);
        margin: 0 var(--space-4);
    }
    
    .payment-card__amount {
        font-size: var(--text-4xl);
    }
}

/* ============================================
   Animations
   ============================================ */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

@keyframes glow {
    0%, 100% { box-shadow: 0 0 20px rgba(139, 92, 246, 0.3); }
    50% { box-shadow: 0 0 40px rgba(139, 92, 246, 0.6); }
}

.animate-fade-in {
    animation: fadeIn 0.5s ease forwards;
}

.animate-pulse {
    animation: pulse 2s ease-in-out infinite;
}

.animate-glow {
    animation: glow 2s ease-in-out infinite;
}