/* Material 3 Expressive Theme - Ledgit */
:root {
    /* Refined Color Palette - Modern & Trustworthy */
    --md-sys-color-primary: #1E88E5;
    --md-sys-color-primary-hover: #1976D2;
    --md-sys-color-primary-container: #E3F2FD;
    --md-sys-color-on-primary: #FFFFFF;
    --md-sys-color-on-primary-container: #0D47A1;
    
    --md-sys-color-secondary: #66BB6A;
    --md-sys-color-secondary-container: #E8F5E9;
    --md-sys-color-on-secondary: #FFFFFF;
    
    --md-sys-color-surface: #FFFFFF;
    --md-sys-color-surface-variant: #F5F7FA;
    --md-sys-color-on-surface: #1A1C1E;
    --md-sys-color-on-surface-variant: #5F6368;
    
    --md-sys-color-error: #EF5350;
    --md-sys-color-outline: #E0E3E7;
    
    /* Spacing - More breathing room */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2.5rem;
    --spacing-xl: 4rem;
    --spacing-2xl: 6rem;
    --spacing-3xl: 8rem;
    
    /* Typography - Better hierarchy */
    --font-family-base: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', sans-serif;
    --font-family-display: 'Inter', 'Roboto Flex', 'Roboto', sans-serif;
    
    /* Elevation - Softer shadows */
    --elevation-1: 0 1px 2px rgba(0,0,0,0.04), 0 2px 4px rgba(0,0,0,0.02);
    --elevation-2: 0 2px 4px rgba(0,0,0,0.04), 0 4px 12px rgba(0,0,0,0.06);
    --elevation-3: 0 4px 8px rgba(0,0,0,0.04), 0 8px 24px rgba(0,0,0,0.08);
    --elevation-4: 0 8px 16px rgba(0,0,0,0.04), 0 16px 48px rgba(0,0,0,0.10);
    
    /* Border Radius - More modern */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    
    /* Transitions - Smoother */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 250ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 400ms cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
    font-family: var(--font-family-base);
    color: var(--md-sys-color-on-surface);
    background-color: var(--md-sys-color-surface);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* Hero Section - Modern & Trustworthy */
.hero {
    min-height: 85vh;
    display: flex;
    align-items: center;
    background: linear-gradient(135deg, #F0F7FF 0%, #FFFFFF 50%, #F8FAFB 100%);
    padding: var(--spacing-3xl) 0 var(--spacing-2xl);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -10%;
    width: 60%;
    height: 150%;
    background: radial-gradient(circle, rgba(33, 150, 243, 0.08) 0%, transparent 70%);
    pointer-events: none;
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-title {
    font-family: var(--font-family-display);
    font-size: 4rem;
    font-weight: 700;
    line-height: 1.1;
    letter-spacing: -0.025em;
    color: var(--md-sys-color-on-surface);
    margin-bottom: var(--spacing-lg);
    white-space: pre-line;
    background: linear-gradient(135deg, #1A1C1E 0%, #3E4347 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.125rem;
    line-height: 1.7;
    color: var(--md-sys-color-on-surface-variant);
    margin-bottom: var(--spacing-xl);
    font-weight: 400;
    max-width: 540px;
}

.cta-group {
    display: flex;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

/* Buttons - Modern & Trustworthy */
.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: 1rem 2rem;
    border-radius: var(--radius-xl);
    font-size: 1rem;
    font-weight: 600;
    text-decoration: none;
    transition: all var(--transition-base);
    cursor: pointer;
    border: none;
    font-family: var(--font-family-base);
    position: relative;
    overflow: hidden;
    letter-spacing: 0.01em;
}

.btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.2);
    transform: translate(-50%, -50%);
    transition: width 0.5s ease-out, height 0.5s ease-out;
}

.btn:hover::before {
    width: 320px;
    height: 320px;
}

.btn-icon {
    width: 20px;
    height: 20px;
    position: relative;
    z-index: 1;
}

.btn-primary {
    background: linear-gradient(135deg, var(--md-sys-color-primary) 0%, var(--md-sys-color-primary-hover) 100%);
    color: var(--md-sys-color-on-primary);
    box-shadow: var(--elevation-2);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--elevation-3);
}

.btn-secondary {
    background-color: transparent;
    color: var(--md-sys-color-primary);
    border: 2px solid var(--md-sys-color-primary);
}

.btn-secondary:hover {
    background-color: var(--md-sys-color-primary-container);
}

.btn-outline {
    background-color: transparent;
    color: var(--md-sys-color-on-surface);
    border: 2px solid var(--md-sys-color-outline);
}

.btn-outline:hover {
    background-color: var(--md-sys-color-surface-variant);
    border-color: var(--md-sys-color-on-surface);
}

.btn-large {
    padding: 1.25rem 2.5rem;
    font-size: 1.125rem;
}

/* Phone Mockup - Galaxy S25/S24 Style */
.hero-visual {
    display: flex;
    justify-content: center;
    align-items: center;
}

.phone-mockup {
    position: relative;
    animation: floatPhone 5s ease-in-out infinite;
    filter: drop-shadow(0 25px 50px rgba(33, 150, 243, 0.2));
}

@keyframes floatPhone {
    0%, 100% { 
        transform: translateY(0px); 
    }
    50% { 
        transform: translateY(-20px); 
    }
}

.phone-frame {
    width: 300px;
    height: 630px;
    background: linear-gradient(135deg, #1A1A1A 0%, #0A0A0A 100%);
    border-radius: 48px;
    padding: 3px;
    position: relative;
    box-shadow: 
        0 0 0 1px rgba(255, 255, 255, 0.1),
        inset 0 0 0 1px rgba(255, 255, 255, 0.05);
}

/* Camera punch-hole (centered at top) */
.phone-frame::before {
    content: '';
    position: absolute;
    top: 16px;
    left: 50%;
    transform: translateX(-50%);
    width: 12px;
    height: 12px;
    background: #000;
    border-radius: 50%;
    z-index: 10;
    box-shadow: 0 0 0 2px #0A0A0A;
}

/* Power button (right side) */
.phone-frame::after {
    content: '';
    position: absolute;
    right: -2px;
    top: 160px;
    width: 3px;
    height: 60px;
    background: linear-gradient(180deg, #2A2A2A 0%, #1A1A1A 100%);
    border-radius: 0 2px 2px 0;
}

.phone-screen {
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #E8F4FD 0%, #D1E9FC 25%, #A8D8F8 75%, #7AC8F5 100%);
    border-radius: 46px;
    overflow: hidden;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: inset 0 0 0 1px rgba(0, 0, 0, 0.05);
}

.screen-glow {
    position: absolute;
    width: 200%;
    height: 200%;
    background: radial-gradient(
        circle at 35% 35%,
        rgba(255, 255, 255, 0.5) 0%,
        rgba(255, 255, 255, 0.2) 25%,
        transparent 60%
    );
    animation: pulseGlow 4s ease-in-out infinite;
    z-index: 1;
}

.phone-logo {
    position: relative;
    width: 62%;
    max-width: 190px;
    aspect-ratio: 1 / 1;
    display: block;
    object-fit: contain;
    z-index: 2;
    filter: drop-shadow(0 12px 24px rgba(12, 64, 128, 0.25));
    animation: logoFloat 6s ease-in-out infinite;
}

@keyframes pulseGlow {
    0%, 100% {
        transform: scale(1) rotate(0deg);
        opacity: 0.8;
    }
    50% {
        transform: scale(1.05) rotate(5deg);
        opacity: 1;
    }
}

@keyframes logoFloat {
    0%, 100% {
        transform: translateY(0px) scale(1);
    }
    50% {
        transform: translateY(-8px) scale(1.01);
    }
}

/* Scroll Animation Classes */
.prop-card,
.tech-card,
.feature-item {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}

.prop-card.animate-in,
.tech-card.animate-in,
.feature-item.animate-in {
    opacity: 1;
    transform: translateY(0);
}

/* Trust Banner */
.trust-banner {
    background-color: var(--md-sys-color-surface-variant);
    padding: var(--spacing-xl) 0;
}

.trust-item {
    opacity: 1;
    transform: none;
}

.trust-indicators {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-lg);
}

.trust-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.trust-icon {
    font-size: 2.5rem;
    flex-shrink: 0;
}

.trust-text {
    display: flex;
    flex-direction: column;
}

.trust-text strong {
    font-size: 1rem;
    font-weight: 600;
    color: var(--md-sys-color-on-surface);
}

.trust-text span {
    font-size: 0.875rem;
    color: var(--md-sys-color-on-surface-variant);
}

/* Value Props - Modern Cards */
.value-props {
    padding: var(--spacing-3xl) 0;
    background: var(--md-sys-color-surface);
}

.section-title {
    font-size: 2.75rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: var(--spacing-lg);
    color: var(--md-sys-color-on-surface);
    letter-spacing: -0.02em;
    line-height: 1.2;
}

.section-subtitle {
    text-align: center;
    font-size: 1.125rem;
    color: var(--md-sys-color-on-surface-variant);
    max-width: 640px;
    margin: 0 auto var(--spacing-2xl);
    line-height: 1.7;
}

.props-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-xl);
}

.prop-card {
    background: var(--md-sys-color-surface);
    padding: var(--spacing-xl) var(--spacing-lg);
    border-radius: var(--radius-lg);
    border: 1px solid var(--md-sys-color-outline);
    transition: all var(--transition-base);
    position: relative;
}

.prop-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    border-radius: var(--radius-lg);
    background: linear-gradient(135deg, rgba(30, 136, 229, 0.04) 0%, transparent 100%);
    opacity: 0;
    transition: opacity var(--transition-base);
}

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

.prop-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--elevation-3);
    border-color: rgba(30, 136, 229, 0.2);
}

.prop-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-md);
    display: block;
}

.prop-title {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    color: var(--md-sys-color-on-surface);
}

.prop-description {
    color: var(--md-sys-color-on-surface-variant);
    line-height: 1.6;
    font-size: 1rem;
}

/* Feature Showcase */
.feature-showcase {
    background-color: var(--md-sys-color-surface-variant);
    padding: var(--spacing-3xl) 0;
}

.feature-item {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-2xl);
    align-items: center;
    margin-bottom: var(--spacing-3xl);
}

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

.feature-item.reverse .feature-visual {
    order: 2;
}

.feature-item.reverse .feature-text {
    order: 1;
}

.feature-text h2 {
    font-size: 2rem;
    font-weight: 600;
    margin-bottom: var(--spacing-md);
    color: var(--md-sys-color-on-surface);
}

.feature-text p {
    color: var(--md-sys-color-on-surface-variant);
    margin-bottom: var(--spacing-md);
    font-size: 1.125rem;
}

.feature-list {
    list-style: none;
    padding: 0;
}

.feature-list li {
    padding: var(--spacing-sm) 0;
    color: var(--md-sys-color-on-surface-variant);
    position: relative;
    padding-left: var(--spacing-lg);
}

.feature-list li::before {
    content: "→";
    position: absolute;
    left: 0;
    color: var(--md-sys-color-primary);
    font-weight: bold;
}

.feature-mockup {
    background: var(--md-sys-color-surface);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    box-shadow: var(--elevation-3);
    text-align: center;
}

.mockup-icon {
    font-size: 4rem;
    margin-bottom: var(--spacing-md);
}

.mockup-flow {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

.flow-step {
    background: var(--md-sys-color-primary-container);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-sm);
    font-weight: 500;
    color: var(--md-sys-color-on-primary-container);
}

.flow-arrow {
    color: var(--md-sys-color-primary);
    font-weight: bold;
    font-size: 1.5rem;
}

.currency-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-sm);
    margin-top: var(--spacing-md);
}

.currency-item {
    background: var(--md-sys-color-primary-container);
    padding: var(--spacing-md);
    border-radius: var(--radius-sm);
    font-weight: 600;
    color: var(--md-sys-color-on-primary-container);
    text-align: center;
}

.vault-visual {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    margin-top: var(--spacing-md);
}

.vault-item {
    background: var(--md-sys-color-surface-variant);
    padding: var(--spacing-md);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.vault-lock {
    font-size: 1.5rem;
}

.vault-name {
    font-weight: 500;
    color: var(--md-sys-color-on-surface);
}

/* Technical Transparency */
.tech-transparency {
    padding: var(--spacing-3xl) 0;
    background: var(--md-sys-color-surface-variant);
}

.tech-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-2xl);
}

.tech-card {
    background: var(--md-sys-color-surface);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    box-shadow: var(--elevation-1);
    transition: all var(--transition-base);
    border: 1px solid transparent;
}

.tech-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--elevation-2);
    border-color: var(--md-sys-color-outline);
}

.tech-icon {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-md);
    display: block;
}

.tech-card h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    color: var(--md-sys-color-on-surface);
}

.tech-card p {
    color: var(--md-sys-color-on-surface-variant);
    line-height: 1.7;
    font-size: 0.9375rem;
}

.tech-cta {
    text-align: center;
    margin-top: var(--spacing-xl);
}

.tech-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-md);
}

.tech-card h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: var(--spacing-md);
    color: var(--md-sys-color-on-surface);
}

.tech-card p {
    color: var(--md-sys-color-on-surface-variant);
    line-height: 1.6;
}

.tech-cta {
    display: flex;
    justify-content: center;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

/* Social Proof */
.social-proof {
    background-color: var(--md-sys-color-surface-variant);
    padding: var(--spacing-2xl) 0;
}

.proof-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-xl);
}

.proof-item {
    text-align: center;
}

.proof-badge {
    display: inline-block;
    background: var(--md-sys-color-primary);
    color: var(--md-sys-color-on-primary);
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--radius-xl);
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

.proof-item p {
    color: var(--md-sys-color-on-surface-variant);
}

/* FAQ Section */
.faq {
    padding: var(--spacing-3xl) 0;
    background: var(--md-sys-color-surface);
}

.faq-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
    gap: var(--spacing-lg);
    max-width: 920px;
    margin: 0 auto;
}

.faq-item {
    background: var(--md-sys-color-surface);
    border: 1px solid var(--md-sys-color-outline);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    transition: all var(--transition-base);
}

.faq-item:hover {
    box-shadow: var(--elevation-2);
    border-color: rgba(30, 136, 229, 0.2);
}

.faq-item[open] {
    background: var(--md-sys-color-surface-variant);
    box-shadow: var(--elevation-1);
}

.faq-question {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--md-sys-color-on-surface);
    cursor: pointer;
    list-style: none;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-sm);
}

.faq-question::after {
    content: '+';
    font-size: 1.5rem;
    color: var(--md-sys-color-primary);
    transition: transform var(--transition-base);
    font-weight: 300;
}

.faq-item[open] .faq-question::after {
    content: '−';
    transform: rotate(0deg);
}

.faq-answer {
    padding: var(--spacing-md) var(--spacing-sm) var(--spacing-sm);
    color: var(--md-sys-color-on-surface-variant);
    line-height: 1.7;
}

.faq-answer p {
    margin: 0;
}

/* Final CTA */
.final-cta {
    background: linear-gradient(135deg, #1E88E5 0%, #1565C0 100%);
    color: var(--md-sys-color-on-primary);
    padding: var(--spacing-3xl) 0;
    text-align: center;
}

.cta-content h2 {
    font-size: 2.75rem;
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    letter-spacing: -0.02em;
}

.cta-content p {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-xl);
    opacity: 0.95;
}

.cta-requirement {
    margin-top: var(--spacing-md);
    font-size: 0.875rem;
    opacity: 0.8;
}

/* Footer */
.footer {
    background-color: var(--md-sys-color-on-surface);
    color: rgba(255, 255, 255, 0.9);
    padding: var(--spacing-2xl) 0 var(--spacing-lg);
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: var(--spacing-2xl);
    margin-bottom: var(--spacing-xl);
}

.footer-section h3 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: var(--spacing-md);
    color: #FFFFFF;
}

.footer-section h4 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    color: rgba(255, 255, 255, 0.95);
}

.footer-section p {
    line-height: 1.7;
    opacity: 0.8;
}

.footer-links {
    list-style: none;
    padding: 0;
}

.footer-links li {
    margin-bottom: var(--spacing-xs);
}

.footer-links a {
    color: rgba(255, 255, 255, 0.85);
    text-decoration: none;
    transition: color var(--transition-fast);
}

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

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-lg);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    opacity: 0.7;
    font-size: 0.875rem;
}
.footer-section h4 {
    color: white;
    margin-bottom: var(--spacing-md);
}

.footer-section p {
    color: #CAC4D0;
    line-height: 1.6;
}

.footer-links {
    list-style: none;
    padding: 0;
}

.footer-links li {
    margin-bottom: var(--spacing-xs);
}

.footer-links a {
    color: #CAC4D0;
    text-decoration: none;
    transition: color var(--transition-fast);
}

.footer-links a:hover {
    color: white;
}

.footer-note {
    color: #938F99;
    font-size: 0.875rem;
}

.footer-bottom {
    border-top: 1px solid #49454F;
    padding-top: var(--spacing-md);
    text-align: center;
}

.footer-bottom p {
    color: #938F99;
    font-size: 0.875rem;
}

.footer-tech {
    margin-top: var(--spacing-xs);
    font-size: 0.75rem;
}

/* Responsive Design */
@media (max-width: 768px) {
    :root {
        --spacing-2xl: 4rem;
        --spacing-3xl: 5rem;
    }
    
    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .hero-title {
        font-size: 2.75rem;
    }
    
    .hero-subtitle {
        font-size: 1rem;
        max-width: 100%;
    }
    
    .hero-visual {
        order: -1;
        margin-bottom: var(--spacing-lg);
    }
    
    .phone-frame {
        width: 260px;
        height: 546px;
    }
    
    .cta-group {
        justify-content: center;
    }
    
    .feature-item,
    .feature-item.reverse {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .feature-item.reverse .feature-visual,
    .feature-item.reverse .feature-text {
        order: 0;
    }
    
    .section-title {
        font-size: 2.25rem;
    }
    
    .cta-content h2 {
        font-size: 2.25rem;
    }
    
    .trust-indicators {
        grid-template-columns: 1fr;
    }
    
    .props-grid,
    .tech-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2.25rem;
        line-height: 1.15;
    }
    
    .hero-subtitle {
        font-size: 0.9375rem;
    }
    
    .btn {
        width: 100%;
        justify-content: center;
    }
    
    .phone-frame {
        width: 220px;
        height: 462px;
    }
    
    .section-title {
        font-size: 2rem;
    }
}