/* CSS Variables */
:root {
    /* Primary Colors - from AppColors.swift */
    --color-primary: #007AFF;
    --color-primary-dark: #0056CC;
    --color-secondary: #8E8E93;

    /* Status Colors */
    --color-success: #4CAF50;
    --color-warning: #FFC107;
    --color-error: #FF3B30;

    /* Ranking Colors */
    --color-rank-gold: #FFD700;
    --color-rank-silver: #C0C0C0;
    --color-rank-bronze: #CD7F32;

    /* Background Colors */
    --color-bg-primary: #FFFFFF;
    --color-bg-secondary: #F2F2F7;
    --color-bg-tertiary: #E5E5EA;

    /* Text Colors */
    --color-text-primary: #000000;
    --color-text-secondary: #6C6C70;
    --color-text-tertiary: #AEAEB2;

    /* Hero gradient */
    --gradient-hero: linear-gradient(135deg, #1a365d 0%, #0f172a 100%);

    /* Typography */
    --font-family: -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 6rem;

    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.15);

    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 24px;
    --radius-full: 9999px;

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-normal: 250ms ease;
}

/* Dark Mode */
@media (prefers-color-scheme: dark) {
    :root {
        --color-bg-primary: #1C1C1E;
        --color-bg-secondary: #2C2C2E;
        --color-bg-tertiary: #3A3A3C;
        --color-text-primary: #FFFFFF;
        --color-text-secondary: #AEAEB2;
        --color-text-tertiary: #6C6C70;
        --gradient-hero: linear-gradient(135deg, #0f172a 0%, #030712 100%);
    }
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    font-size: 16px;
    line-height: 1.6;
    color: var(--color-text-primary);
    background-color: var(--color-bg-primary);
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

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

a:hover {
    color: var(--color-primary-dark);
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-sm);
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: var(--color-bg-primary);
    border-bottom: 1px solid var(--color-bg-tertiary);
    transition: box-shadow var(--transition-normal);
}

.navbar.scrolled {
    box-shadow: var(--shadow-md);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-sm);
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-weight: 600;
    font-size: 1.25rem;
    color: var(--color-text-primary);
}

.nav-logo {
    width: 36px;
    height: 36px;
    border-radius: 8px;
    box-shadow: var(--shadow-sm);
}

.nav-toggle {
    display: flex;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-xs);
}

.nav-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--color-text-primary);
    transition: transform var(--transition-fast), opacity var(--transition-fast);
}

.nav-toggle.active span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

.nav-toggle.active span:nth-child(2) {
    opacity: 0;
}

.nav-toggle.active span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

.nav-menu {
    display: none;
    list-style: none;
    gap: var(--spacing-md);
}

.nav-menu.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    background: var(--color-bg-primary);
    padding: var(--spacing-sm);
    border-bottom: 1px solid var(--color-bg-tertiary);
    box-shadow: var(--shadow-md);
}

.nav-link {
    color: var(--color-text-secondary);
    font-weight: 500;
    padding: var(--spacing-xs) 0;
    transition: color var(--transition-fast);
}

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

.health-badge {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: 0.875rem;
    color: var(--color-text-secondary);
}

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

.health-dot.online {
    background: var(--color-success);
}

.health-dot.offline {
    background: var(--color-error);
}

/* Hero Section */
.hero {
    padding: calc(64px + var(--spacing-xl)) var(--spacing-sm) var(--spacing-xl);
    background: var(--gradient-hero);
    color: #FFFFFF;
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
}

/* Floating decorative icons */
.hero-decorations {
    position: absolute;
    inset: 0;
    pointer-events: none;
    overflow: hidden;
}

.floating-icon {
    position: absolute;
    opacity: 0.08;
    filter: brightness(0) invert(1);
    animation: float 20s ease-in-out infinite;
}

.floating-icon.icon-1 {
    width: 120px;
    top: 10%;
    left: 5%;
    animation-delay: 0s;
}

.floating-icon.icon-2 {
    width: 80px;
    top: 60%;
    left: 8%;
    animation-delay: -4s;
}

.floating-icon.icon-3 {
    width: 100px;
    top: 20%;
    right: 5%;
    animation-delay: -8s;
}

.floating-icon.icon-4 {
    width: 90px;
    bottom: 15%;
    right: 10%;
    animation-delay: -12s;
}

.floating-icon.icon-5 {
    width: 70px;
    bottom: 30%;
    left: 15%;
    animation-delay: -16s;
}

@keyframes float {
    0%, 100% {
        transform: translateY(0) rotate(0deg);
    }
    25% {
        transform: translateY(-20px) rotate(5deg);
    }
    50% {
        transform: translateY(0) rotate(0deg);
    }
    75% {
        transform: translateY(20px) rotate(-5deg);
    }
}

.hero-container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-lg);
    text-align: center;
    position: relative;
    z-index: 1;
}

.hero-content {
    max-width: 600px;
}

.hero-icon img {
    width: 100px;
    height: 100px;
    margin: 0 auto var(--spacing-sm);
    border-radius: var(--radius-lg);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.4);
}

.hero h1 {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: var(--spacing-xs);
    color: #FFFFFF;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: rgba(255, 255, 255, 0.95);
    margin-bottom: var(--spacing-xs);
}

.hero-tagline {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--color-rank-gold);
    margin-bottom: var(--spacing-sm);
}

.hero-description {
    font-size: 1.125rem;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: var(--spacing-md);
    line-height: 1.7;
}

.app-store-badge svg {
    width: 150px;
    height: 50px;
    transition: transform var(--transition-fast);
}

.app-store-badge:hover svg {
    transform: scale(1.05);
}

.hero-mockup img {
    max-width: 350px;
    border-radius: var(--radius-lg);
    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.4);
}

/* Sections */
section {
    padding: var(--spacing-xl) var(--spacing-sm);
}

section:nth-child(even) {
    /* background: var(--color-bg-secondary); */
}

h2 {
    font-size: 2rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: var(--spacing-xs);
}

.section-subtitle {
    text-align: center;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-lg);
}

/* Features Section */
.features-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
}

.feature-card {
    background: var(--color-bg-primary);
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

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

.feature-image {
    position: relative;
    overflow: hidden;
    background: var(--gradient-hero);
    padding: var(--spacing-md);
    display: flex;
    justify-content: center;
}

.feature-image img {
    max-width: 200px;
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow-lg);
}

.feature-content {
    padding: var(--spacing-md);
}

.feature-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-xs);
}

.feature-icon {
    width: 32px;
    height: 32px;
    flex-shrink: 0;
}

.feature-content h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin: 0;
}

.feature-content p {
    color: var(--color-text-secondary);
    font-size: 0.9375rem;
}

/* FAQ Section */
.faq-search {
    max-width: 500px;
    margin: 0 auto var(--spacing-md);
}

.faq-search input {
    width: 100%;
    padding: var(--spacing-sm);
    font-size: 1rem;
    border: 1px solid var(--color-bg-tertiary);
    border-radius: var(--radius-md);
    background: var(--color-bg-primary);
    color: var(--color-text-primary);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.faq-search input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(0, 122, 255, 0.15);
}

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

.faq-section {
    background: var(--color-bg-primary);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-sm);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
}

.faq-section > summary {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    font-weight: 600;
    font-size: 1.125rem;
    cursor: pointer;
    list-style: none;
    transition: background var(--transition-fast);
}

.faq-section > summary::-webkit-details-marker {
    display: none;
}

.faq-section > summary:hover {
    background: var(--color-bg-secondary);
}

.faq-section[open] > summary {
    border-bottom: 1px solid var(--color-bg-tertiary);
}

.faq-section-icon {
    width: 28px;
    height: 28px;
    flex-shrink: 0;
}

.faq-items {
    padding: var(--spacing-sm);
}

.faq-item {
    border-bottom: 1px solid var(--color-bg-tertiary);
}

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

.faq-item > summary {
    padding: var(--spacing-sm);
    cursor: pointer;
    list-style: none;
    font-weight: 500;
    transition: color var(--transition-fast);
}

.faq-item > summary::-webkit-details-marker {
    display: none;
}

.faq-item > summary:hover {
    color: var(--color-primary);
}

.faq-item > p {
    padding: 0 var(--spacing-sm) var(--spacing-sm);
    color: var(--color-text-secondary);
    font-size: 0.9375rem;
    line-height: 1.7;
}

.faq-item.hidden,
.faq-section.hidden {
    display: none;
}

/* Status Section */
.status-card {
    max-width: 500px;
    margin: 0 auto;
    background: var(--color-bg-primary);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    box-shadow: var(--shadow-md);
    text-align: center;
}

.status-indicator {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
}

.status-dot {
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: var(--color-secondary);
    transition: background var(--transition-normal);
}

.status-dot.online {
    background: var(--color-success);
    box-shadow: 0 0 10px var(--color-success);
}

.status-dot.offline {
    background: var(--color-error);
    box-shadow: 0 0 10px var(--color-error);
}

.status-label {
    font-size: 1.25rem;
    font-weight: 600;
}

.status-details {
    color: var(--color-text-secondary);
    font-size: 0.875rem;
}

/* Contact/Feedback Section */
.feedback-form {
    max-width: 600px;
    margin: 0 auto;
    background: var(--color-bg-primary);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    box-shadow: var(--shadow-md);
}

.form-group {
    margin-bottom: var(--spacing-md);
}

.form-group label {
    display: block;
    font-weight: 500;
    margin-bottom: var(--spacing-xs);
}

.optional {
    color: var(--color-text-tertiary);
    font-weight: 400;
}

.required {
    color: var(--color-error);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: var(--spacing-sm);
    font-size: 1rem;
    font-family: var(--font-family);
    border: 1px solid var(--color-bg-tertiary);
    border-radius: var(--radius-sm);
    background: var(--color-bg-secondary);
    color: var(--color-text-primary);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(0, 122, 255, 0.15);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

/* Star Rating */
.star-rating {
    display: flex;
    gap: var(--spacing-xs);
}

.star {
    background: none;
    border: none;
    font-size: 2rem;
    color: var(--color-bg-tertiary);
    cursor: pointer;
    padding: 0;
    transition: color var(--transition-fast), transform var(--transition-fast);
}

.star:hover,
.star.active {
    color: var(--color-warning);
    transform: scale(1.1);
}

.star.hover {
    color: var(--color-warning);
}

/* Submit Button */
.submit-btn {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: 1rem;
    font-weight: 600;
    color: #FFFFFF;
    background: var(--color-primary);
    border: none;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: background var(--transition-fast), transform var(--transition-fast);
}

.submit-btn:hover:not(:disabled) {
    background: var(--color-primary-dark);
}

.submit-btn:active:not(:disabled) {
    transform: scale(0.98);
}

.submit-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.form-message {
    margin-top: var(--spacing-sm);
    padding: var(--spacing-sm);
    border-radius: var(--radius-sm);
    text-align: center;
    display: none;
}

.form-message.success {
    display: block;
    background: rgba(76, 175, 80, 0.1);
    color: var(--color-success);
    border: 1px solid var(--color-success);
}

.form-message.error {
    display: block;
    background: rgba(255, 59, 48, 0.1);
    color: var(--color-error);
    border: 1px solid var(--color-error);
}

/* Privacy & Disclaimer Sections */
.legal-content {
    max-width: 800px;
    margin: 0 auto;
    background: var(--color-bg-primary);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    box-shadow: var(--shadow-sm);
}

.legal-date {
    color: var(--color-text-tertiary);
    font-size: 0.875rem;
    margin-bottom: var(--spacing-md);
}

.legal-content h3 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-top: var(--spacing-md);
    margin-bottom: var(--spacing-xs);
}

.legal-content h3:first-of-type {
    margin-top: 0;
}

.legal-content p {
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-sm);
}

.legal-content ul {
    color: var(--color-text-secondary);
    padding-left: var(--spacing-md);
    margin-bottom: var(--spacing-sm);
}

.legal-content li {
    margin-bottom: var(--spacing-xs);
}

.disclaimer-box {
    background: var(--color-bg-secondary);
    border-left: 4px solid var(--color-warning);
}

.disclaimer-box p {
    margin-bottom: var(--spacing-sm);
}

.disclaimer-box p:last-child {
    margin-bottom: 0;
}

/* Footer */
.footer {
    background: var(--color-bg-tertiary);
    padding: var(--spacing-lg) var(--spacing-sm);
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-md);
    text-align: center;
}

.footer-brand {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-weight: 600;
    font-size: 1.25rem;
    color: var(--color-text-primary);
}

.footer-logo {
    width: 36px;
    height: 36px;
    border-radius: 8px;
    box-shadow: var(--shadow-sm);
}

.footer-nav {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--spacing-sm) var(--spacing-md);
}

.footer-nav a {
    color: var(--color-text-secondary);
    font-size: 0.875rem;
}

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

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

/* Responsive Design */
@media (min-width: 768px) {
    .nav-toggle {
        display: none;
    }

    .nav-menu {
        display: flex;
        position: static;
        flex-direction: row;
        background: none;
        padding: 0;
        border: none;
        box-shadow: none;
    }

    .hero-container {
        flex-direction: row;
        text-align: left;
    }

    .hero-content {
        flex: 1;
    }

    .hero-icon img {
        margin: 0 0 var(--spacing-sm);
    }

    .hero-mockup {
        flex: 1;
        display: flex;
        justify-content: center;
    }

    .hero-mockup img {
        max-width: 400px;
    }

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

@media (min-width: 1024px) {
    .container {
        padding: 0 var(--spacing-md);
    }

    .hero h1 {
        font-size: 3.5rem;
    }

    .hero-mockup img {
        max-width: 450px;
    }

    .feature-image img {
        max-width: 250px;
    }
}

@media (min-width: 1200px) {
    .hero-mockup img {
        max-width: 500px;
    }
}