/* Reset & Base Styles */
:root {
    --primary-color: #007AFF;
    --primary-dark: #0056CC;
    --secondary-color: #5856D6;
    --accent-color: #FF2D55;
    --text-primary: #1D1D1F;
    --text-secondary: #86868B;
    --bg-primary: #FFFFFF;
    --bg-secondary: #F5F5F7;
    --border-color: #D2D2D7;
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.12);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.16);
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-xl: 28px;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'SF Pro SC', 'SF Pro Text', 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
    background: var(--bg-primary);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: saturate(180%) blur(20px);
    border-bottom: 1px solid var(--border-color);
    z-index: 1000;
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 56px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 600;
    font-size: 18px;
    color: var(--text-primary);
}

.logo-icon {
    width: 28px;
    height: 28px;
    color: var(--primary-color);
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 32px;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-secondary);
    font-size: 14px;
    font-weight: 500;
    transition: color 0.2s;
}

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

/* Hero Section */
.hero {
    padding: 120px 0 80px;
    background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--bg-primary) 100%);
}

.hero-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.hero-content h1 {
    font-size: 56px;
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: 20px;
    color: var(--text-primary);
}

.hero-content p {
    font-size: 20px;
    color: var(--text-secondary);
    margin-bottom: 32px;
    line-height: 1.5;
}

.hero-buttons {
    display: flex;
    gap: 16px;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 28px;
    border-radius: var(--radius-xl);
    font-size: 16px;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s;
    cursor: pointer;
    border: none;
}

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

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.app-store-icon {
    width: 20px;
    height: 20px;
}

/* Phone Mockup */
.phone-mockup {
    width: 320px;
    margin: 0 auto;
}

.phone-screen {
    background: var(--bg-primary);
    border-radius: 40px;
    padding: 12px;
    box-shadow: var(--shadow-lg);
    border: 8px solid var(--text-primary);
}

.app-preview {
    background: var(--bg-secondary);
    border-radius: 28px;
    overflow: hidden;
    min-height: 580px;
}

.preview-header {
    display: flex;
    gap: 6px;
    padding: 12px;
    background: var(--bg-primary);
}

.preview-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--border-color);
}

.preview-content {
    padding: 16px;
}

.preview-card {
    height: 100px;
    background: var(--bg-primary);
    border-radius: var(--radius-md);
    margin-bottom: 12px;
    box-shadow: var(--shadow-sm);
}

/* Section Styles */
.section-title {
    font-size: 40px;
    font-weight: 700;
    text-align: center;
    margin-bottom: 12px;
    color: var(--text-primary);
}

.section-subtitle {
    font-size: 18px;
    color: var(--text-secondary);
    text-align: center;
    margin-bottom: 48px;
}

/* Features Section */
.features {
    padding: 100px 0;
    background: var(--bg-primary);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.feature-card {
    padding: 32px;
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    transition: transform 0.3s, box-shadow 0.3s;
}

.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.feature-icon {
    width: 56px;
    height: 56px;
    background: var(--primary-color);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
}

.feature-icon svg {
    width: 28px;
    height: 28px;
    color: white;
}

.feature-card h3 {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--text-primary);
}

.feature-card p {
    font-size: 15px;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* How It Works Section */
.how-it-works {
    padding: 100px 0;
    background: var(--bg-secondary);
}

.steps {
    max-width: 800px;
    margin: 0 auto;
}

.step {
    display: flex;
    gap: 24px;
    margin-bottom: 40px;
    padding: 24px;
    background: var(--bg-primary);
    border-radius: var(--radius-lg);
}

.step-number {
    width: 48px;
    height: 48px;
    background: var(--primary-color);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    font-weight: 700;
    flex-shrink: 0;
}

.step-content h3 {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--text-primary);
}

.step-content p {
    font-size: 15px;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* Categories Section */
.categories {
    padding: 100px 0;
    background: var(--bg-primary);
}

.categories-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 24px;
}

.category-item {
    text-align: center;
    padding: 24px;
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    transition: transform 0.3s;
}

.category-item:hover {
    transform: translateY(-4px);
}

.category-icon {
    font-size: 40px;
    display: block;
    margin-bottom: 12px;
}

.category-item h4 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 4px;
    color: var(--text-primary);
}

.category-item p {
    font-size: 13px;
    color: var(--text-secondary);
}

/* Tech Specs Section */
.tech-specs {
    padding: 100px 0;
    background: var(--bg-secondary);
}

.specs-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.spec-item {
    padding: 24px;
    background: var(--bg-primary);
    border-radius: var(--radius-md);
}

.spec-item h4 {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 8px;
}

.spec-item p {
    font-size: 16px;
    color: var(--text-primary);
    font-weight: 500;
}

/* Support Section */
.support {
    padding: 100px 0;
    background: var(--bg-primary);
}

.support-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 40px;
}

.support-card {
    padding: 32px;
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
}

.support-card h3 {
    font-size: 22px;
    font-weight: 600;
    margin-bottom: 24px;
    color: var(--text-primary);
}

.faq-list {
    list-style: none;
}

.faq-list li {
    margin-bottom: 24px;
}

.faq-list strong {
    display: block;
    font-size: 16px;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.faq-list p {
    font-size: 15px;
    color: var(--text-secondary);
    line-height: 1.6;
}

.contact-info {
    margin-top: 16px;
}

.contact-email {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px;
    background: var(--bg-primary);
    border-radius: var(--radius-md);
    text-decoration: none;
    color: var(--primary-color);
    font-weight: 500;
    transition: background 0.3s;
}

.contact-email:hover {
    background: var(--bg-primary);
}

.contact-email svg {
    width: 20px;
    height: 20px;
}

/* Footer */
.footer {
    padding: 40px 0;
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
}

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

.footer-logo {
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 600;
    color: var(--text-primary);
}

.footer-logo svg {
    width: 24px;
    height: 24px;
    color: var(--primary-color);
}

.footer-text {
    font-size: 14px;
    color: var(--text-secondary);
}

.footer-links {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 14px;
}

.footer-links a {
    color: var(--text-secondary);
    text-decoration: none;
}

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

.footer-separator {
    color: var(--border-color);
}

/* ICP Filing Info */
.icp-filing {
    margin-top: 16px;
    padding-top: 16px;
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 8px;
    font-size: 13px;
}

.icp-filing a {
    color: var(--text-secondary);
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    transition: color 0.2s;
}

.icp-filing a:hover {
    color: var(--primary-color);
}

.icp-filing .separator {
    color: var(--border-color);
}

.icp-badge {
    width: 16px;
    height: 16px;
    vertical-align: middle;
}

/* PSB Badge Styles */
.psb-badge {
    width: 20px;
    height: 20px;
    vertical-align: middle;
    margin-right: 4px;
}

.psb-link {
    display: inline-flex;
    align-items: center;
}

/* Responsive Design */
@media (max-width: 1024px) {
    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-content h1 {
        font-size: 42px;
    }

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

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

    .categories-grid {
        grid-template-columns: repeat(3, 1fr);
    }

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

    .support-content {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }

    .hero {
        padding: 80px 0 40px;
    }

    .hero-content h1 {
        font-size: 32px;
    }

    .hero-content p {
        font-size: 16px;
    }

    .phone-mockup {
        width: 260px;
    }

    .features-grid,
    .categories-grid,
    .specs-grid {
        grid-template-columns: 1fr;
    }

    .step {
        flex-direction: column;
        text-align: center;
    }

    .step-number {
        margin: 0 auto;
    }

    .footer-content {
        flex-direction: column;
        gap: 16px;
        text-align: center;
    }
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.feature-card,
.step,
.category-item,
.spec-item {
    animation: fadeInUp 0.6s ease-out forwards;
}

.feature-card:nth-child(2) { animation-delay: 0.1s; }
.feature-card:nth-child(3) { animation-delay: 0.2s; }
.feature-card:nth-child(4) { animation-delay: 0.3s; }
.feature-card:nth-child(5) { animation-delay: 0.4s; }
.feature-card:nth-child(6) { animation-delay: 0.5s; }