/* Gains Vault Website Styles - Modern Premium Design */

/* Custom Properties */
:root {
    /* Color Palette - Modern Dark Theme with Vibrant Accents */
    --primary: #6366F1;
    --primary-light: #818CF8;
    --primary-dark: #4F46E5;
    --primary-glow: rgba(99, 102, 241, 0.4);

    --accent: #22D3EE;
    --accent-glow: rgba(34, 211, 238, 0.3);

    --success: #10B981;
    --warning: #F59E0B;

    /* Background Colors */
    --bg-primary: #0A0A0F;
    --bg-secondary: #12121A;
    --bg-tertiary: #1A1A24;
    --bg-elevated: #22222E;

    /* Surface Colors (Glass Effects) */
    --surface-glass: rgba(255, 255, 255, 0.03);
    --surface-glass-hover: rgba(255, 255, 255, 0.06);
    --surface-border: rgba(255, 255, 255, 0.08);
    --surface-border-hover: rgba(255, 255, 255, 0.15);

    /* Text Colors */
    --text-primary: #F8FAFC;
    --text-secondary: #94A3B8;
    --text-tertiary: #64748B;
    --text-muted: #475569;

    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #6366F1 0%, #8B5CF6 50%, #A855F7 100%);
    --gradient-hero: linear-gradient(180deg, rgba(99, 102, 241, 0.15) 0%, transparent 50%);
    --gradient-radial: radial-gradient(ellipse at center, rgba(99, 102, 241, 0.15) 0%, transparent 70%);
    --gradient-card: linear-gradient(180deg, rgba(255, 255, 255, 0.05) 0%, transparent 100%);

    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 40px var(--primary-glow);

    /* Spacing */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    --space-3xl: 4rem;
    --space-4xl: 6rem;

    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-2xl: 32px;

    /* Typography */
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-display: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;

    /* Transitions */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 250ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 350ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-spring: 500ms cubic-bezier(0.34, 1.56, 0.64, 1);
}

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

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

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

/* Utility Classes */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-xl);
}

/* Header & Navigation */
header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(10, 10, 15, 0.8);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    border-bottom: 1px solid var(--surface-border);
    transition: var(--transition-base);
}

header.scrolled {
    background: rgba(10, 10, 15, 0.95);
    box-shadow: var(--shadow-md);
}

nav {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--space-md) var(--space-xl);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-size: 1.375rem;
    font-weight: 700;
    color: var(--text-primary);
    text-decoration: none;
    letter-spacing: -0.02em;
}

.logo a {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    text-decoration: none;
    color: inherit;
    transition: var(--transition-fast);
}

.logo a:hover {
    opacity: 0.9;
}

.logo-icon {
    width: 36px;
    height: 36px;
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow-sm);
    transition: var(--transition-base);
}

.logo:hover .logo-icon {
    transform: scale(1.05);
    box-shadow: var(--shadow-glow);
}

.nav-links {
    display: flex;
    gap: var(--space-2xl);
    align-items: center;
}

.nav-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.9375rem;
    position: relative;
    padding: var(--space-xs) 0;
    transition: var(--transition-fast);
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    border-radius: 1px;
    transition: var(--transition-base);
}

.nav-links a:hover,
.nav-links a.active {
    color: var(--text-primary);
}

.nav-links a:hover::after,
.nav-links a.active::after {
    width: 100%;
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    padding-top: 80px;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 150%;
    height: 100%;
    background: var(--gradient-hero);
    pointer-events: none;
}

.hero::after {
    content: '';
    position: absolute;
    top: 20%;
    left: 50%;
    transform: translateX(-50%);
    width: 800px;
    height: 800px;
    background: var(--gradient-radial);
    pointer-events: none;
    opacity: 0.6;
}

.hero-inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--space-4xl) var(--space-xl);
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-4xl);
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-content {
    max-width: 560px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-xs) var(--space-md);
    background: var(--surface-glass);
    border: 1px solid var(--surface-border);
    border-radius: 100px;
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-bottom: var(--space-lg);
    animation: fadeInUp 0.6s ease-out;
}

.hero-badge-dot {
    width: 8px;
    height: 8px;
    background: var(--success);
    border-radius: 50%;
    animation: pulse 2s infinite;
}

.hero-content h1 {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 800;
    line-height: 1.1;
    letter-spacing: -0.03em;
    margin-bottom: var(--space-lg);
    animation: fadeInUp 0.6s ease-out 0.1s both;
}

.hero-content h1 .gradient-text {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-content .subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: var(--space-2xl);
    line-height: 1.7;
    animation: fadeInUp 0.6s ease-out 0.2s both;
}

.hero-cta {
    display: flex;
    align-items: center;
    gap: var(--space-lg);
    animation: fadeInUp 0.6s ease-out 0.3s both;
}

.app-store-btn {
    display: inline-block;
    transition: var(--transition-base);
}

.app-store-btn img {
    height: 56px;
    display: block;
    filter: brightness(1);
    transition: var(--transition-base);
}

.app-store-btn:hover img {
    transform: translateY(-2px);
    filter: brightness(1.1);
}

.hero-stats {
    display: flex;
    gap: var(--space-2xl);
    margin-top: var(--space-2xl);
    padding-top: var(--space-2xl);
    border-top: 1px solid var(--surface-border);
    animation: fadeInUp 0.6s ease-out 0.4s both;
}

.stat-item {
    display: flex;
    flex-direction: column;
}

.stat-value {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: -0.02em;
}

.stat-label {
    font-size: 0.875rem;
    color: var(--text-tertiary);
}

.hero-image {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
    animation: fadeInUp 0.8s ease-out 0.3s both;
}

.hero-image::before {
    content: '';
    position: absolute;
    width: 120%;
    height: 120%;
    background: var(--gradient-radial);
    opacity: 0.5;
    pointer-events: none;
}

.phone-mockup {
    position: relative;
    z-index: 1;
}

.phone-mockup img {
    width: 100%;
    max-width: 320px;
    border-radius: var(--radius-2xl);
    box-shadow:
        0 0 0 1px rgba(255, 255, 255, 0.1),
        0 25px 50px -12px rgba(0, 0, 0, 0.5),
        0 0 80px var(--primary-glow);
    transition: opacity 0.4s ease, transform var(--transition-slow);
}

.phone-mockup:hover img {
    transform: translateY(-8px) rotateX(2deg);
    box-shadow:
        0 0 0 1px rgba(255, 255, 255, 0.15),
        0 35px 60px -15px rgba(0, 0, 0, 0.6),
        0 0 100px var(--primary-glow);
}

/* Floating Elements */
.floating-card {
    position: absolute;
    padding: var(--space-md) var(--space-lg);
    background: var(--surface-glass);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--surface-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    animation: float 6s ease-in-out infinite;
    transition: opacity 0.4s ease;
    min-width: 170px;
}

.floating-card-1 {
    top: 15%;
    right: -10%;
    animation-delay: 0s;
}

.floating-card-2 {
    bottom: 10%;
    left: -12%;
    animation-delay: 2s;
}

.floating-card-icon {
    font-size: 1.5rem;
    margin-bottom: var(--space-xs);
}

.floating-card-text {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-primary);
}

.floating-card-subtext {
    font-size: 0.75rem;
    color: var(--text-tertiary);
}

/* Features Section */
.features {
    position: relative;
    padding: var(--space-4xl) 0;
    background: var(--bg-secondary);
}

.features::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--surface-border), transparent);
}

.features-inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-xl);
}

.section-header {
    text-align: center;
    max-width: 640px;
    margin: 0 auto var(--space-4xl);
}

.section-label {
    display: inline-block;
    padding: var(--space-xs) var(--space-md);
    background: var(--surface-glass);
    border: 1px solid var(--surface-border);
    border-radius: 100px;
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--primary-light);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: var(--space-lg);
}

.section-header h2 {
    font-size: clamp(2rem, 4vw, 2.75rem);
    font-weight: 800;
    letter-spacing: -0.03em;
    margin-bottom: var(--space-md);
    line-height: 1.2;
}

.section-header p {
    font-size: 1.125rem;
    color: var(--text-secondary);
    line-height: 1.7;
}

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

.feature {
    position: relative;
    padding: var(--space-2xl);
    background: var(--gradient-card);
    border: 1px solid var(--surface-border);
    border-radius: var(--radius-xl);
    transition: var(--transition-base);
    overflow: hidden;
}

.feature::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--gradient-radial);
    opacity: 0;
    transition: var(--transition-base);
}

.feature:hover {
    border-color: var(--surface-border-hover);
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.feature:hover::before {
    opacity: 0.3;
}

.feature-icon {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--surface-glass);
    border: 1px solid var(--surface-border);
    border-radius: var(--radius-md);
    font-size: 1.5rem;
    margin-bottom: var(--space-lg);
    transition: var(--transition-base);
}

.feature:hover .feature-icon {
    background: var(--surface-glass-hover);
    border-color: var(--surface-border-hover);
    transform: scale(1.05);
}

.feature h3 {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: var(--space-sm);
    letter-spacing: -0.01em;
    position: relative;
    z-index: 1;
}

.feature p {
    color: var(--text-secondary);
    font-size: 0.9375rem;
    line-height: 1.6;
    position: relative;
    z-index: 1;
}

/* CTA Section */
.cta {
    position: relative;
    padding: var(--space-4xl) var(--space-xl);
    text-align: center;
    overflow: hidden;
}

.cta::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 600px;
    height: 600px;
    background: var(--gradient-radial);
    opacity: 0.4;
    pointer-events: none;
}

.cta-inner {
    max-width: 640px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

.cta-card {
    padding: var(--space-4xl) var(--space-2xl);
    background: var(--surface-glass);
    border: 1px solid var(--surface-border);
    border-radius: var(--radius-2xl);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
}

.cta h2 {
    font-size: clamp(1.75rem, 3vw, 2.5rem);
    font-weight: 800;
    margin-bottom: var(--space-md);
    letter-spacing: -0.03em;
}

.cta p {
    color: var(--text-secondary);
    font-size: 1.125rem;
    margin-bottom: var(--space-2xl);
}

/* Footer */
footer {
    background: var(--bg-secondary);
    border-top: 1px solid var(--surface-border);
    padding: var(--space-2xl);
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

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

.footer-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.9375rem;
    transition: var(--transition-fast);
}

.footer-links a:hover {
    color: var(--text-primary);
}

.copyright {
    color: var(--text-tertiary);
    font-size: 0.875rem;
}

/* Legal Pages (Privacy & Support) */
.legal-page,
.support-page {
    min-height: 100vh;
    padding-top: 100px;
    background: var(--bg-primary);
}

.page-inner {
    max-width: 800px;
    margin: 0 auto;
    padding: var(--space-2xl) var(--space-xl) var(--space-4xl);
}

.legal-content,
.support-content {
    background: var(--surface-glass);
    border: 1px solid var(--surface-border);
    border-radius: var(--radius-xl);
    padding: var(--space-3xl);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
}

.legal-content h1,
.support-content h1 {
    font-size: clamp(2rem, 4vw, 2.75rem);
    font-weight: 800;
    letter-spacing: -0.03em;
    margin-bottom: var(--space-sm);
}

.last-updated,
.intro {
    color: var(--text-secondary);
    font-size: 1rem;
    margin-bottom: var(--space-2xl);
    padding-bottom: var(--space-2xl);
    border-bottom: 1px solid var(--surface-border);
}

.legal-content section,
.support-content section {
    margin-bottom: var(--space-2xl);
}

.legal-content h2,
.support-content h2 {
    font-size: 1.375rem;
    font-weight: 700;
    margin-bottom: var(--space-md);
    color: var(--text-primary);
    letter-spacing: -0.01em;
}

.legal-content h3,
.support-content h3 {
    font-size: 1.125rem;
    font-weight: 600;
    margin: var(--space-lg) 0 var(--space-sm);
    color: var(--text-primary);
}

.legal-content p,
.support-content p {
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: var(--space-md);
}

.legal-content ul,
.support-content ul {
    margin-left: var(--space-lg);
    margin-bottom: var(--space-md);
}

.legal-content li,
.support-content li {
    color: var(--text-secondary);
    margin-bottom: var(--space-sm);
    line-height: 1.6;
}

.legal-content a,
.support-content a {
    color: var(--primary-light);
    text-decoration: none;
    transition: var(--transition-fast);
}

.legal-content a:hover,
.support-content a:hover {
    color: var(--primary);
    text-decoration: underline;
}

/* Support Page Specifics */
.contact-section {
    text-align: center;
    padding: var(--space-2xl);
    background: var(--surface-glass);
    border: 1px solid var(--surface-border);
    border-radius: var(--radius-lg);
    margin-bottom: var(--space-2xl);
}

.contact-section h2 {
    margin-bottom: var(--space-md);
}

.email-link {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--primary-light);
    text-decoration: none;
    padding: var(--space-md) var(--space-xl);
    background: var(--surface-glass);
    border: 1px solid var(--surface-border);
    border-radius: var(--radius-md);
    margin: var(--space-md) 0;
    transition: var(--transition-base);
}

.email-link:hover {
    background: var(--surface-glass-hover);
    border-color: var(--surface-border-hover);
    transform: translateY(-2px);
    text-decoration: none;
}

.response-time {
    color: var(--text-tertiary);
    font-size: 0.875rem;
}

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

.faq-item {
    padding: var(--space-lg) 0;
    border-bottom: 1px solid var(--surface-border);
    transition: var(--transition-fast);
}

.faq-item:last-child {
    border-bottom: none;
}

.faq-item h3 {
    margin-bottom: var(--space-sm);
    color: var(--text-primary);
    transition: var(--transition-fast);
}

.faq-item:hover h3 {
    color: var(--primary-light);
}

.faq-item p {
    margin-bottom: 0;
}

.feedback-section {
    padding: var(--space-2xl);
    background: var(--surface-glass);
    border: 1px solid var(--surface-border);
    border-radius: var(--radius-lg);
    text-align: center;
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes float {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-10px);
    }
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
        transform: scale(1);
    }
    50% {
        opacity: 0.7;
        transform: scale(1.1);
    }
}

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

/* Scroll Animations */
.animate-on-scroll {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.animate-on-scroll.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Responsive Design */
@media (max-width: 1024px) {
    .hero-inner {
        grid-template-columns: 1fr;
        text-align: center;
        gap: var(--space-3xl);
    }

    .hero-content {
        max-width: 100%;
    }

    .hero-cta {
        justify-content: center;
    }

    .hero-stats {
        justify-content: center;
    }

    .feature-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .floating-card {
        display: none;
    }
}

@media (max-width: 768px) {
    :root {
        --space-4xl: 4rem;
    }

    nav {
        padding: var(--space-md);
    }

    .nav-links {
        gap: var(--space-lg);
    }

    .hero {
        padding-top: 70px;
    }

    .hero-inner {
        padding: var(--space-2xl) var(--space-md);
    }

    .feature-grid {
        grid-template-columns: 1fr;
    }

    .footer-content {
        flex-direction: column;
        gap: var(--space-lg);
        text-align: center;
    }

    .legal-content,
    .support-content {
        padding: var(--space-xl);
    }
}

@media (max-width: 480px) {
    nav {
        flex-direction: column;
        gap: var(--space-md);
    }

    .nav-links {
        gap: var(--space-md);
        font-size: 0.875rem;
    }

    .hero-stats {
        flex-direction: column;
        gap: var(--space-lg);
    }

    .phone-mockup img {
        max-width: 260px;
    }

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

/* Dark mode image optimization */
@media (prefers-color-scheme: light) {
    /* Force dark theme regardless of system preference for brand consistency */
    body {
        color-scheme: dark;
    }
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    :root {
        --surface-border: rgba(255, 255, 255, 0.2);
        --text-secondary: #B0B8C4;
    }
}

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }

    html {
        scroll-behavior: auto;
    }
}