/* ========================================
   P2P Crypto Marketplace - Main Stylesheet
   A modern, crypto-inspired design system
   Mobile-first responsive design
   ======================================== */

/* === CSS Variables / Design Tokens === */
:root {
    /* Brand Colors */
    --primary: #6366f1;          /* Indigo - main brand color */
    --primary-light: #818cf8;
    --primary-dark: #4f46e5;
    --secondary: #14f195;        /* Solana green */
    --accent: #9945ff;           /* Solana purple */
    
    /* UI Colors */
    --success: #10b981;
    --warning: #f59e0b;
    --danger: #ef4444;
    --info: #3b82f6;
    
    /* Neutrals */
    --bg-dark: #0a0a0f;
    --bg-card: #12121a;
    --bg-elevated: #1a1a24;
    --bg-hover: #22222e;
    --bg-tertiary: #1f1f2e;
    --border: #2a2a3a;
    --border-light: #3a3a4a;
    
    /* Text */
    --text-primary: #ffffff;
    --text-secondary: #a1a1aa;
    --text-muted: #71717a;
    
    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #6366f1 0%, #9945ff 100%);
    --gradient-secondary: linear-gradient(135deg, #14f195 0%, #9945ff 100%);
    --gradient-accent: linear-gradient(135deg, #f59e0b 0%, #ef4444 100%);
    --gradient-card: linear-gradient(180deg, rgba(99, 102, 241, 0.1) 0%, rgba(20, 241, 149, 0.05) 100%);
    
    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0px 40px rgba(99, 102, 241, 0.3);
    
    /* Typography */
    --font-primary: 'Space Grotesk', system-ui, sans-serif;
    --font-mono: 'JetBrains Mono', monospace;
    
    /* Spacing */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    
    /* Border Radius */
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 9999px;
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 400ms ease;
}

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

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

/* === Animated Background === */
.bg-grid {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        linear-gradient(rgba(99, 102, 241, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(99, 102, 241, 0.03) 1px, transparent 1px);
    background-size: 50px 50px;
    pointer-events: none;
    z-index: -2;
}

.bg-glow {
    position: fixed;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle at 30% 20%, rgba(99, 102, 241, 0.15) 0%, transparent 50%),
                radial-gradient(circle at 70% 80%, rgba(153, 69, 255, 0.1) 0%, transparent 50%),
                radial-gradient(circle at 50% 50%, rgba(20, 241, 149, 0.05) 0%, transparent 40%);
    animation: glowMove 20s ease-in-out infinite;
    pointer-events: none;
    z-index: -1;
}

@keyframes glowMove {
    0%, 100% { transform: translate(0, 0) rotate(0deg); }
    25% { transform: translate(-5%, 5%) rotate(2deg); }
    50% { transform: translate(5%, -5%) rotate(-2deg); }
    75% { transform: translate(-3%, -3%) rotate(1deg); }
}

/* === Typography === */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.3;
    letter-spacing: -0.02em;
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }

p { color: var(--text-secondary); }

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

a:hover { color: var(--secondary); }

/* === Navigation === */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 72px;
    background: rgba(10, 10, 15, 0.8);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
    z-index: 1000;
}

.nav-container {
    max-width: 1400px;
    height: 100%;
    margin: 0 auto;
    padding: 0 var(--space-lg);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    text-decoration: none;
}

.logo-icon {
    width: 40px;
    height: 40px;
    background: var(--gradient-primary);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
}

.logo-accent { color: var(--secondary); }

.nav-links {
    display: flex;
    gap: var(--space-sm);
}

.nav-link {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-md);
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    font-weight: 500;
    transition: all var(--transition-fast);
}

.nav-link:hover, .nav-link.active {
    background: var(--bg-elevated);
    color: var(--text-primary);
}

.nav-link i { font-size: 0.9rem; }

.nav-auth { display: flex; gap: var(--space-sm); }

.nav-mobile-toggle {
    display: none;
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: var(--space-sm) var(--space-md);
    color: var(--text-primary);
    cursor: pointer;
}

.mobile-menu {
    display: none;
    padding: var(--space-md) var(--space-lg);
    background: var(--bg-card);
    border-bottom: 1px solid var(--border);
}

.mobile-menu.active { display: block; }

.mobile-link {
    display: block;
    padding: var(--space-md);
    color: var(--text-secondary);
    border-radius: var(--radius-md);
}

/* === Buttons === */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-lg);
    font-family: var(--font-primary);
    font-size: 0.9rem;
    font-weight: 600;
    border-radius: var(--radius-md);
    border: none;
    cursor: pointer;
    transition: all var(--transition-fast);
    text-decoration: none;
}

.btn-primary {
    background: var(--gradient-primary);
    color: white;
    box-shadow: 0 4px 15px rgba(99, 102, 241, 0.4);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(99, 102, 241, 0.5);
}

.btn-secondary {
    background: var(--bg-elevated);
    color: var(--text-primary);
    border: 1px solid var(--border);
}

.btn-secondary:hover {
    background: var(--bg-hover);
    border-color: var(--primary);
}

.btn-success {
    background: linear-gradient(135deg, #10b981 0%, #059669 100%);
    color: white;
    border: none;
    font-weight: 600;
}

.btn-success:hover {
    background: linear-gradient(135deg, #059669 0%, #047857 100%);
    box-shadow: 0 4px 20px rgba(16, 185, 129, 0.4);
    transform: translateY(-2px);
}

/* Button glow effects */
.btn-glow {
    box-shadow: 0 0 20px rgba(99, 102, 241, 0.4);
    animation: btnGlowPulse 2s ease-in-out infinite;
}

.btn-glow:hover {
    box-shadow: 0 0 30px rgba(99, 102, 241, 0.6);
}

.btn-glow:disabled {
    box-shadow: none;
    animation: none;
}

.btn-glow-green {
    box-shadow: 0 0 20px rgba(16, 185, 129, 0.4);
    animation: btnGlowPulseGreen 2s ease-in-out infinite;
}

.btn-glow-green:hover {
    box-shadow: 0 0 30px rgba(16, 185, 129, 0.6);
}

.btn-glow-green:disabled {
    box-shadow: none;
    animation: none;
}

@keyframes btnGlowPulse {
    0%, 100% { box-shadow: 0 0 20px rgba(99, 102, 241, 0.4); }
    50% { box-shadow: 0 0 30px rgba(99, 102, 241, 0.6); }
}

@keyframes btnGlowPulseGreen {
    0%, 100% { box-shadow: 0 0 20px rgba(16, 185, 129, 0.4); }
    50% { box-shadow: 0 0 30px rgba(16, 185, 129, 0.6); }
}

.btn-gradient {
    background: var(--gradient-secondary);
    color: var(--bg-dark);
    font-weight: 700;
}

.btn-phantom {
    background: #ab9ff2;
    color: #1a1a2e;
    padding: var(--space-md) var(--space-xl);
    font-size: 1rem;
}

.btn-phantom img {
    width: 24px;
    height: 24px;
}

.btn-full { width: 100%; }

.btn-lg {
    padding: var(--space-md) var(--space-xl);
    font-size: 1rem;
}

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

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

.card:hover {
    border-color: var(--primary);
    box-shadow: var(--shadow-glow);
}

.card-glass {
    background: rgba(18, 18, 26, 0.8);
    backdrop-filter: blur(10px);
}

/* === Forms === */
.form-group {
    margin-bottom: var(--space-lg);
}

.form-label {
    display: block;
    margin-bottom: var(--space-sm);
    font-weight: 500;
    color: var(--text-secondary);
}

.form-input, .form-select, .form-textarea {
    width: 100%;
    padding: var(--space-md);
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-family: var(--font-primary);
    font-size: 1rem;
    transition: all var(--transition-fast);
}

.form-input:focus, .form-select:focus, .form-textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.2);
}

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

.form-select {
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 24 24' fill='none' stroke='%2371717a' stroke-width='2'%3E%3Cpolyline points='6,9 12,15 18,9'%3E%3C/polyline%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right var(--space-md) center;
    padding-right: 3rem;
}

/* === Main Content === */
.main-content {
    min-height: 100vh;
    padding-top: 72px;
}

/* === Hero Section === */
.hero {
    padding: var(--space-2xl) var(--space-lg);
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-md);
    background: rgba(20, 241, 149, 0.1);
    border: 1px solid rgba(20, 241, 149, 0.3);
    border-radius: var(--radius-full);
    color: var(--secondary);
    font-size: 0.85rem;
    font-weight: 500;
    margin-bottom: var(--space-lg);
}

.hero h1 {
    font-size: 3rem;
    margin-bottom: var(--space-md);
    background: var(--gradient-secondary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero p {
    font-size: 1.2rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

/* === Filters Section === */
.filters-section {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--space-lg) var(--space-xl);
}

.filters-card {
    background: var(--gradient-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-xl);
    padding: var(--space-xl);
}

.filters-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--space-lg);
}

.filters-header h3 {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.filters-header h3 i { color: var(--primary); }

.filters-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--space-md);
}

.filter-group {
    position: relative;
}

.filter-label {
    display: block;
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--space-sm);
}

/* === Type Toggle === */
.type-toggle {
    display: flex;
    background: var(--bg-elevated);
    border-radius: var(--radius-md);
    padding: 4px;
    border: 1px solid var(--border);
}

.type-btn {
    flex: 1;
    padding: var(--space-md);
    background: transparent;
    border: none;
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    font-family: var(--font-primary);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.type-btn.active {
    background: var(--gradient-primary);
    color: white;
}

.type-btn.buy.active {
    background: linear-gradient(135deg, #10b981 0%, #14f195 100%);
}

.type-btn.sell.active {
    background: linear-gradient(135deg, #ef4444 0%, #f97316 100%);
}

/* === Offers Grid === */
.offers-section {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--space-lg) var(--space-2xl);
}

.offers-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--space-lg);
}

.offers-count {
    color: var(--text-muted);
    font-size: 0.9rem;
}

.offers-grid {
    display: grid;
    gap: var(--space-md);
}

/* === Offer Card === */
.offer-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    display: grid;
    grid-template-columns: auto 1fr auto;
    gap: var(--space-lg);
    align-items: center;
    cursor: pointer;
    transition: all var(--transition-base);
}

.offer-card:hover {
    border-color: var(--primary);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.offer-user {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-sm);
}

.offer-avatar {
    width: 48px;
    height: 48px;
    background: var(--gradient-primary);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 1.2rem;
}

.offer-username {
    font-weight: 600;
    font-size: 0.9rem;
}

.offer-details {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-lg);
}

.offer-stat {
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
}

.offer-stat-label {
    font-size: 0.75rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.offer-stat-value {
    font-size: 1.1rem;
    font-weight: 600;
}

.offer-stat-value.price {
    color: var(--secondary);
    font-family: var(--font-mono);
}

.offer-methods {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-xs);
}

.method-tag {
    padding: 2px 8px;
    background: var(--bg-elevated);
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    color: var(--text-secondary);
}

.offer-action {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: var(--space-sm);
}

.offer-type {
    padding: var(--space-xs) var(--space-md);
    border-radius: var(--radius-full);
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
}

.offer-type.buy {
    background: rgba(16, 185, 129, 0.15);
    color: #10b981;
}

.offer-type.sell {
    background: rgba(239, 68, 68, 0.15);
    color: #ef4444;
}

.offer-location {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    font-size: 0.85rem;
    color: var(--text-muted);
}

/* === Modals === */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 2000;
    align-items: center;
    justify-content: center;
}

.modal.active { display: flex; }

.modal-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(5px);
}

.modal-content {
    position: relative;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-xl);
    padding: var(--space-xl);
    max-width: 450px;
    width: 90%;
    animation: modalSlide 0.3s ease;
}

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

.modal-close {
    position: absolute;
    top: var(--space-md);
    right: var(--space-md);
    background: var(--bg-elevated);
    border: none;
    border-radius: var(--radius-full);
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-muted);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.modal-close:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
}

.modal-header {
    text-align: center;
    margin-bottom: var(--space-xl);
}

.modal-icon {
    width: 64px;
    height: 64px;
    background: var(--gradient-primary);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    margin: 0 auto var(--space-md);
}

.modal-icon.subscribe-icon {
    background: var(--gradient-secondary);
}

.modal-header h2 {
    margin-bottom: var(--space-sm);
}

.modal-header p {
    color: var(--text-muted);
}

.modal-note {
    text-align: center;
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-top: var(--space-lg);
}

.modal-note i { margin-right: var(--space-xs); }

/* === Subscription Card === */
.subscription-card {
    background: var(--bg-elevated);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    text-align: center;
}

.sub-price {
    display: flex;
    align-items: baseline;
    justify-content: center;
    gap: var(--space-xs);
    margin-bottom: var(--space-lg);
}

.sub-price .currency {
    font-size: 1.5rem;
    color: var(--text-muted);
}

.sub-price .amount {
    font-size: 4rem;
    font-weight: 700;
    background: var(--gradient-secondary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.sub-price .period {
    font-size: 1rem;
    color: var(--text-muted);
}

.sub-features {
    list-style: none;
    margin-bottom: var(--space-lg);
    text-align: left;
}

.sub-features li {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-sm) 0;
    color: var(--text-secondary);
}

.sub-features i {
    color: var(--secondary);
}

/* === Toast Notifications === */
.toast-container {
    position: fixed;
    bottom: var(--space-lg);
    right: var(--space-lg);
    z-index: 3000;
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.toast {
    padding: var(--space-md) var(--space-lg);
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    animation: toastSlide 0.3s ease;
    box-shadow: var(--shadow-lg);
}

.toast.success { border-left: 3px solid var(--success); }
.toast.error { border-left: 3px solid var(--danger); }
.toast.info { border-left: 3px solid var(--info); }

@keyframes toastSlide {
    from {
        opacity: 0;
        transform: translateX(100%);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* === Footer === */
.footer {
    background: var(--bg-card);
    border-top: 1px solid var(--border);
    padding: var(--space-2xl) var(--space-lg);
}

.footer-container {
    max-width: 1400px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: var(--space-2xl);
}

.footer-brand p {
    max-width: 300px;
    margin-top: var(--space-md);
}

.footer-logo {
    font-size: 1.5rem;
    font-weight: 700;
}

.footer-links {
    display: flex;
    gap: var(--space-2xl);
}

.footer-section h4 {
    margin-bottom: var(--space-md);
    color: var(--text-primary);
}

.footer-section a {
    display: block;
    padding: var(--space-xs) 0;
    color: var(--text-muted);
    font-size: 0.9rem;
}

.footer-section a:hover { color: var(--primary-light); }

.footer-bottom {
    max-width: 1400px;
    margin: var(--space-xl) auto 0;
    padding-top: var(--space-lg);
    border-top: 1px solid var(--border);
    text-align: center;
}

.footer-bottom p { 
    font-size: 0.85rem;
    color: var(--text-muted);
}

/* === Loading States === */
.loading {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-2xl);
}

.spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--border);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

/* === Empty State === */
.empty-state {
    text-align: center;
    padding: var(--space-2xl);
}

.empty-icon {
    font-size: 4rem;
    color: var(--text-muted);
    margin-bottom: var(--space-lg);
}

/* === Status Badge === */
.status-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    padding: var(--space-xs) var(--space-md);
    border-radius: var(--radius-full);
    font-size: 0.8rem;
    font-weight: 500;
}

.status-badge.active {
    background: rgba(16, 185, 129, 0.15);
    color: var(--success);
}

.status-badge.expired {
    background: rgba(239, 68, 68, 0.15);
    color: var(--danger);
}

.status-badge.pending {
    background: rgba(245, 158, 11, 0.15);
    color: var(--warning);
}

/* === User Connected State === */
.user-menu {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.user-info {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-md);
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    border-radius: var(--radius-full);
}

.user-avatar-sm {
    width: 32px;
    height: 32px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.8rem;
    font-weight: 600;
}

.user-address {
    font-family: var(--font-mono);
    font-size: 0.85rem;
    color: var(--text-secondary);
}

/* === Responsive Design === */
@media (max-width: 1024px) {
    .offer-card {
        grid-template-columns: 1fr;
        gap: var(--space-md);
    }
    
    .offer-user {
        flex-direction: row;
        justify-content: flex-start;
    }
    
    .offer-details {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .offer-action {
        flex-direction: row;
        justify-content: space-between;
        align-items: center;
    }
}

@media (max-width: 768px) {
    .nav-links, .nav-auth { display: none; }
    .nav-mobile-toggle { display: flex; }
    
    .hero h1 { font-size: 2rem; }
    .hero p { font-size: 1rem; }
    
    .filters-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-container {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .footer-links {
        justify-content: center;
    }
    
    .footer-brand p {
        margin: var(--space-md) auto;
    }
    
    /* Promo section tablet */
    .promo-section {
        padding: var(--space-lg) var(--space-md);
    }
    
    .promo-button {
        flex-direction: column;
        gap: 10px;
        padding: 14px 20px;
    }
}

@media (max-width: 480px) {
    .offer-details {
        grid-template-columns: 1fr;
    }
    
    .sub-price .amount {
        font-size: 3rem;
    }
}

/* === Page-Specific Styles === */

/* Dashboard Page */
.dashboard-grid {
    display: grid;
    grid-template-columns: 300px 1fr;
    gap: var(--space-xl);
    max-width: 1400px;
    margin: 0 auto;
    padding: var(--space-xl) var(--space-lg);
}

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

.profile-card {
    text-align: center;
    padding: var(--space-xl);
}

.profile-avatar {
    width: 80px;
    height: 80px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    font-weight: 600;
    margin: 0 auto var(--space-md);
}

.subscription-status {
    padding: var(--space-md);
    border-radius: var(--radius-md);
    margin-top: var(--space-md);
}

.subscription-status.active {
    background: rgba(16, 185, 129, 0.1);
    border: 1px solid rgba(16, 185, 129, 0.3);
}

.subscription-status.inactive {
    background: rgba(245, 158, 11, 0.1);
    border: 1px solid rgba(245, 158, 11, 0.3);
}

.dashboard-content {
    display: flex;
    flex-direction: column;
    gap: var(--space-xl);
}

.dashboard-section h3 {
    margin-bottom: var(--space-md);
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

@media (max-width: 1024px) {
    .dashboard-grid {
        grid-template-columns: 1fr;
    }
}

/* Payment Page */
.payment-container {
    max-width: 500px;
    margin: 0 auto;
    padding: var(--space-xl) var(--space-lg);
}

.payment-card {
    padding: var(--space-2xl);
}

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

.payment-icon {
    width: 80px;
    height: 80px;
    background: var(--gradient-secondary);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    margin: 0 auto var(--space-lg);
}

.payment-steps {
    margin: var(--space-xl) 0;
}

.payment-step {
    display: flex;
    align-items: flex-start;
    gap: var(--space-md);
    padding: var(--space-md) 0;
}

.step-number {
    width: 32px;
    height: 32px;
    background: var(--bg-elevated);
    border: 2px solid var(--border);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 0.9rem;
    flex-shrink: 0;
}

.step-number.active {
    background: var(--gradient-primary);
    border-color: transparent;
}

.step-number.completed {
    background: var(--success);
    border-color: transparent;
}

.step-content h4 {
    margin-bottom: var(--space-xs);
}

.step-content p {
    font-size: 0.9rem;
}

/* Instructions Page */
.instructions-container {
    max-width: 900px;
    margin: 0 auto;
    padding: var(--space-xl) var(--space-lg);
}

.instructions-section {
    margin-bottom: var(--space-2xl);
}

.instructions-section h2 {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    margin-bottom: var(--space-lg);
}

.instructions-section h2 i {
    color: var(--secondary);
}

.instruction-card {
    display: flex;
    gap: var(--space-md);
    padding: var(--space-lg);
    margin-bottom: var(--space-md);
}

.instruction-icon {
    width: 48px;
    height: 48px;
    background: var(--gradient-primary);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    flex-shrink: 0;
}

.instruction-content h4 {
    margin-bottom: var(--space-xs);
}

/* About Page */
.about-container {
    max-width: 900px;
    margin: 0 auto;
    padding: var(--space-xl) var(--space-lg);
}

.about-hero {
    text-align: center;
    margin-bottom: var(--space-2xl);
}

.about-hero h1 {
    margin-bottom: var(--space-md);
}

.about-section {
    margin-bottom: var(--space-2xl);
}

.about-section h2 {
    margin-bottom: var(--space-lg);
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--space-lg);
}

.feature-card {
    padding: var(--space-xl);
    text-align: center;
}

.feature-icon {
    width: 64px;
    height: 64px;
    background: var(--gradient-primary);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    margin: 0 auto var(--space-md);
}

.feature-card h3 {
    margin-bottom: var(--space-sm);
}


/* ========================================
   Promo Section Styles (above footer)
   ======================================== */

.promo-section {
    padding: var(--space-xl) var(--space-lg);
    text-align: center;
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
}

.promo-button {
    display: -webkit-inline-box;
    display: -webkit-inline-flex;
    display: -ms-inline-flexbox;
    display: inline-flex;
    -webkit-box-align: center;
    -webkit-align-items: center;
    -ms-flex-align: center;
    align-items: center;
    -webkit-flex-wrap: wrap;
    -ms-flex-wrap: wrap;
    flex-wrap: wrap;
    -webkit-box-pack: center;
    -webkit-justify-content: center;
    -ms-flex-pack: center;
    justify-content: center;
    gap: 12px;
    padding: 16px 32px;
    background: linear-gradient(135deg, #dc2626 0%, #16a34a 50%, #dc2626 100%);
    background-size: 200% 200%;
    -webkit-animation: gradientShift 5s ease infinite;
    -moz-animation: gradientShift 5s ease infinite;
    -o-animation: gradientShift 5s ease infinite;
    animation: gradientShift 5s ease infinite;
    border-radius: var(--radius-lg);
    color: #fff;
    text-decoration: none;
    font-weight: 500;
    -webkit-transition: transform 0.2s, box-shadow 0.2s;
    -moz-transition: transform 0.2s, box-shadow 0.2s;
    -o-transition: transform 0.2s, box-shadow 0.2s;
    transition: transform 0.2s, box-shadow 0.2s;
    box-shadow: 0 4px 20px rgba(220, 38, 38, 0.3);
}

.promo-button:hover {
    -webkit-transform: translateY(-2px);
    -moz-transform: translateY(-2px);
    -ms-transform: translateY(-2px);
    -o-transform: translateY(-2px);
    transform: translateY(-2px);
    box-shadow: 0 6px 25px rgba(220, 38, 38, 0.5);
    color: #fff;
}

.promo-button > * {
    margin: 0 6px;
}

.promo-button .promo-badge {
    background: rgba(255, 255, 255, 0.25);
    padding: 6px 14px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    white-space: nowrap;
}

.promo-button .promo-text {
    font-size: 1rem;
    text-align: center;
}

.promo-button .promo-text s {
    opacity: 0.7;
}

.promo-button .promo-cta {
    background: rgba(255, 255, 255, 0.2);
    padding: 8px 16px;
    border-radius: var(--radius-md);
    font-weight: 600;
    white-space: nowrap;
    display: -webkit-inline-box;
    display: -webkit-inline-flex;
    display: -ms-inline-flexbox;
    display: inline-flex;
    -webkit-box-align: center;
    -webkit-align-items: center;
    -ms-flex-align: center;
    align-items: center;
    gap: 6px;
}

/* ========================================
   Promo Banner Styles (Cross-browser compatible - DEPRECATED)
   ======================================== */

.promo-banner {
    background: linear-gradient(135deg, #dc2626 0%, #16a34a 50%, #dc2626 100%);
    background-size: 200% 200%;
    -webkit-animation: gradientShift 5s ease infinite;
    -moz-animation: gradientShift 5s ease infinite;
    -o-animation: gradientShift 5s ease infinite;
    animation: gradientShift 5s ease infinite;
    padding: 12px 20px;
    display: -webkit-box;
    display: -webkit-flex;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-align: center;
    -webkit-align-items: center;
    -ms-flex-align: center;
    align-items: center;
    -webkit-box-pack: center;
    -webkit-justify-content: center;
    -ms-flex-pack: center;
    justify-content: center;
    gap: 15px;
    position: relative;
    z-index: 100;
    -webkit-flex-wrap: wrap;
    -ms-flex-wrap: wrap;
    flex-wrap: wrap;
    color: #fff;
    font-weight: 500;
}

/* Fallback for browsers that don't support gap in flexbox */
.promo-banner > * {
    margin: 0 8px;
}

@-webkit-keyframes gradientShift {
    0%, 100% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
}

@-moz-keyframes gradientShift {
    0%, 100% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
}

@-o-keyframes gradientShift {
    0%, 100% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
}

@keyframes gradientShift {
    0%, 100% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
}

.promo-content {
    display: -webkit-box;
    display: -webkit-flex;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-align: center;
    -webkit-align-items: center;
    -ms-flex-align: center;
    align-items: center;
    gap: 15px;
    -webkit-flex-wrap: wrap;
    -ms-flex-wrap: wrap;
    flex-wrap: wrap;
    -webkit-box-pack: center;
    -webkit-justify-content: center;
    -ms-flex-pack: center;
    justify-content: center;
}

.promo-content > * {
    margin: 0 8px;
}

.promo-badge {
    background: rgba(255, 255, 255, 0.2);
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    white-space: nowrap;
}

.promo-text {
    font-size: 0.95rem;
    text-align: center;
}

.promo-text s {
    opacity: 0.7;
}

.promo-countdown {
    display: -webkit-box;
    display: -webkit-flex;
    display: -ms-flexbox;
    display: flex;
    gap: 8px;
}

.promo-countdown > * {
    margin: 0 4px;
}

.countdown-item {
    display: -webkit-box;
    display: -webkit-flex;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-orient: vertical;
    -webkit-box-direction: normal;
    -webkit-flex-direction: column;
    -ms-flex-direction: column;
    flex-direction: column;
    -webkit-box-align: center;
    -webkit-align-items: center;
    -ms-flex-align: center;
    align-items: center;
    background: rgba(0, 0, 0, 0.3);
    padding: 4px 8px;
    border-radius: 6px;
    min-width: 40px;
}

.countdown-value {
    font-size: 1.1rem;
    font-weight: 700;
    font-family: var(--font-mono), monospace;
    line-height: 1;
}

.countdown-label {
    font-size: 0.6rem;
    text-transform: uppercase;
    opacity: 0.8;
}

.promo-close {
    position: absolute;
    right: 10px;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(0, 0, 0, 0.3);
    border: none;
    color: white;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background var(--transition-fast);
}

.promo-close:hover {
    background: rgba(0, 0, 0, 0.5);
}


/* ========================================
   Phantom Wallet Icon Styles
   ======================================== */

.phantom-icon {
    width: 20px;
    height: 20px;
    margin-right: 8px;
}

.btn-phantom-connect {
    display: flex;
    align-items: center;
    justify-content: center;
}

.phantom-modal-icon {
    background: linear-gradient(135deg, #534BB1 0%, #551BF9 100%);
}

.phantom-modal-icon svg {
    width: 40px;
    height: 40px;
}

.modal-icon {
    width: 64px;
    height: 64px;
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--space-md);
}


/* ========================================
   Subscribe Modal Enhancements
   ======================================== */

.sub-price .old-price {
    font-size: 1rem;
    color: var(--text-muted);
    margin-right: 8px;
}

.sub-badge {
    background: linear-gradient(135deg, #dc2626 0%, #16a34a 100%);
    color: white;
    padding: 6px 16px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
    margin: var(--space-md) 0;
    display: inline-block;
}


/* ========================================
   Free Trial Badge (Dashboard)
   ======================================== */

.trial-badge {
    background: linear-gradient(135deg, #f59e0b 0%, #10b981 100%);
    color: #000;
    font-weight: 600;
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.85rem;
    display: inline-flex;
    align-items: center;
    gap: 6px;
}


/* ========================================
   Mobile-First Responsive Design
   ======================================== */

/* Base mobile styles */
@media (max-width: 480px) {
    :root {
        --space-xl: 1.5rem;
        --space-2xl: 2rem;
    }
    
    body {
        font-size: 14px;
    }
    
    .navbar {
        padding: 0 var(--space-sm);
    }
    
    .nav-container {
        padding: 0.75rem 0;
    }
    
    .nav-logo span {
        font-size: 1.1rem;
    }
    
    .logo-icon {
        width: 32px;
        height: 32px;
        font-size: 0.9rem;
    }
    
    /* Promo banner mobile */
    .promo-banner {
        padding: 8px 40px 8px 10px;
        flex-direction: column;
        gap: 8px;
    }
    
    .promo-content {
        flex-direction: column;
        gap: 8px;
    }
    
    .promo-text {
        font-size: 0.8rem;
    }
    
    .countdown-item {
        padding: 2px 6px;
        min-width: 32px;
    }
    
    .countdown-value {
        font-size: 0.9rem;
    }
    
    .countdown-label {
        font-size: 0.5rem;
    }
    
    /* Promo section mobile */
    .promo-section {
        padding: var(--space-md);
    }
    
    .promo-button {
        padding: 12px 16px;
        flex-direction: column;
        gap: 8px;
    }
    
    .promo-button .promo-badge {
        font-size: 0.75rem;
        padding: 4px 12px;
    }
    
    .promo-button .promo-text {
        font-size: 0.85rem;
    }
    
    .promo-button .promo-cta {
        font-size: 0.85rem;
        padding: 6px 14px;
    }
    
    /* Hero section mobile */
    .hero-title {
        font-size: 1.8rem;
    }
    
    .hero-subtitle {
        font-size: 1rem;
    }
    
    /* Filter section mobile */
    .filter-grid {
        grid-template-columns: 1fr;
        gap: var(--space-sm);
    }
    
    .filter-group {
        margin-bottom: var(--space-sm);
    }
    
    /* Cards mobile */
    .card {
        padding: var(--space-md);
    }
    
    .offer-card {
        padding: var(--space-md);
    }
    
    .offer-header {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--space-sm);
    }
    
    .offer-price {
        font-size: 1.2rem;
    }
    
    /* Buttons mobile */
    .btn {
        padding: 10px 16px;
        font-size: 0.9rem;
    }
    
    .btn-lg {
        padding: 12px 20px;
    }
    
    /* Modal mobile */
    .modal-content {
        margin: var(--space-sm);
        max-width: calc(100vw - var(--space-lg));
        max-height: 90vh;
        overflow-y: auto;
    }
    
    /* Form inputs mobile */
    .form-input,
    .form-select {
        padding: 12px;
        font-size: 16px; /* Prevents zoom on iOS */
    }
    
    /* Dashboard mobile */
    .profile-header {
        flex-direction: column;
        text-align: center;
        gap: var(--space-md);
    }
    
    .profile-actions {
        flex-direction: column;
        width: 100%;
    }
    
    .profile-actions .btn {
        width: 100%;
    }
    
    /* Feature grid mobile */
    .feature-grid {
        grid-template-columns: 1fr;
    }
    
    /* Footer mobile */
    .footer-container {
        flex-direction: column;
        text-align: center;
    }
    
    .footer-links {
        flex-direction: column;
        gap: var(--space-lg);
    }
}

/* Tablet styles */
@media (min-width: 481px) and (max-width: 768px) {
    .nav-links {
        display: none;
    }
    
    .filter-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .hero-title {
        font-size: 2.2rem;
    }
    
    .feature-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .promo-banner {
        padding: 10px 50px 10px 15px;
    }
}

/* Desktop enhancements */
@media (min-width: 769px) {
    .nav-mobile-toggle {
        display: none;
    }
    
    .mobile-menu {
        display: none !important;
    }
}

/* Touch device optimizations */
@media (hover: none) and (pointer: coarse) {
    .btn:active {
        transform: scale(0.98);
    }
    
    .card:active {
        transform: none;
    }
    
    /* Larger touch targets */
    .nav-link {
        padding: 12px 16px;
    }
    
    .offer-card {
        cursor: default;
    }
}

/* High contrast / accessibility */
@media (prefers-contrast: high) {
    :root {
        --border: #4a4a5a;
        --text-secondary: #c1c1ca;
    }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    
    .promo-banner {
        animation: none;
    }
}

/* Dark mode already default, but ensure system preference */
@media (prefers-color-scheme: light) {
    /* Keep dark theme - this is a crypto app */
}


/* ========================================
   Additional Utility Classes
   ======================================== */

.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.hidden { display: none !important; }
.visible { display: block !important; }

.flex-center {
    display: flex;
    align-items: center;
    justify-content: center;
}

.gap-sm { gap: var(--space-sm); }
.gap-md { gap: var(--space-md); }
.gap-lg { gap: var(--space-lg); }

.mt-sm { margin-top: var(--space-sm); }
.mt-md { margin-top: var(--space-md); }
.mt-lg { margin-top: var(--space-lg); }

.mb-sm { margin-bottom: var(--space-sm); }
.mb-md { margin-bottom: var(--space-md); }
.mb-lg { margin-bottom: var(--space-lg); }

.p-sm { padding: var(--space-sm); }
.p-md { padding: var(--space-md); }
.p-lg { padding: var(--space-lg); }

.w-full { width: 100%; }
.h-full { height: 100%; }