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

:root {
    /* Dark Theme Colors */
    --bg-primary: #0d1117;
    --bg-secondary: #161b22;
    --bg-tertiary: #1c2128;
    --bg-elevated: #21262d;

    --text-primary: #e6edf3;
    --text-secondary: #8d96a0;
    --text-tertiary: #636e7b;

    --accent-primary: #FF9B2F;
    --accent-secondary: #e57c0d;
    --accent-hover: #ff7f00;

    --btn-primary: #2fb2ff;
    --btn-primary-hover: #0d8ae5;

    --border-color: #30363d;
    --border-subtle: #21262d;

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

    /* Border Radius */
    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 16px;

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

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

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

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

/* ===== Navigation ===== */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background-color: rgba(13, 17, 23, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    z-index: 1000;
    padding: var(--spacing-sm) 0;
}

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

.nav-brand {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.logo {
    width: 40px;
    height: 40px;
    border-radius: 8px;
}

.brand-name {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
}

.nav-links {
    display: flex;
    gap: var(--spacing-lg);
}

.nav-links a {
    color: var(--text-secondary);
    font-weight: 500;
    transition: color var(--transition-fast);
}

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

/* ===== Hero Section ===== */
.hero {
    min-height: 100vh;
    padding-top: 80px;
    background: linear-gradient(135deg, #0d1117 0%, #161b22 100%);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    pointer-events: none;
}

.hero-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--spacing-3xl) var(--spacing-md);
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-text h1 {
    font-size: 3.5rem;
    font-weight: 800;
    margin-bottom: var(--spacing-md);
    background: var(--btn-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1.2;
}

.hero-subtitle {
    font-size: 1.5rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
    font-weight: 500;
}

.hero-description {
    font-size: 1.1rem;
    color: var(--text-tertiary);
    margin-bottom: var(--spacing-xl);
    line-height: 1.7;
}

.hero-buttons {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: 0.875rem 1.75rem;
    border-radius: var(--radius-md);
    font-weight: 600;
    font-size: 1rem;
    transition: all var(--transition-normal);
    cursor: pointer;
    border: none;
    text-decoration: none;
}

.btn-icon {
    width: 20px;
    height: 20px;
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent-primary) 0%, var(--accent-secondary) 100%);
    color: white;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(229, 124, 13, 0.2);
    color: white;
}

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

.btn-secondary:hover {
    background: var(--bg-tertiary);
    border-color: var(--accent-primary);
    transform: translateY(-2px);
    color: var(--text-primary);
}

.platform-info {
    display: flex;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-md);
}

.platform-badge {
    padding: 0.5rem 1rem;
    background: var(--bg-elevated);
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
}

.hero-image {
    position: relative;
}

.screenshot {
    width: 100%;
    border-radius: var(--radius-lg);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
    border: 1px solid var(--border-color);
}

/* ===== Sections ===== */
.section {
    padding: var(--spacing-3xl) var(--spacing-md);
}

.section-dark {
    background-color: var(--bg-secondary);
}

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

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: var(--spacing-xl);
    color: var(--text-primary);
}

/* ===== Features Grid ===== */
.use-cases {
    margin-bottom: var(--spacing-2xl);
    display: grid;
    gap: var(--spacing-xl);
}

.use-case-content {
    background: var(--bg-tertiary);
    padding: var(--spacing-xl);
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
}

.use-case-content h3 {
    font-size: 1.5rem;
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
}

.use-case-content p {
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: var(--spacing-md);
}

.use-case-content ul {
    list-style: none;
    padding: 0;
}

.use-case-content li {
    color: var(--text-secondary);
    padding: var(--spacing-xs) 0;
    padding-left: var(--spacing-lg);
    position: relative;
    line-height: 1.6;
}

.use-case-content li::before {
    content: "✓";
    position: absolute;
    left: 0;
    color: var(--accent-primary);
    font-weight: bold;
}

.use-case-content strong {
    color: var(--text-primary);
}

.features-title {
    font-size: 2rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: var(--spacing-xl);
    margin-top: var(--spacing-2xl);
    color: var(--text-primary);
}

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

.feature-card {
    background: var(--bg-tertiary);
    padding: var(--spacing-lg);
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
    transition: all var(--transition-normal);
}

.feature-card:hover {
    transform: translateY(-4px);
    border-color: var(--accent-primary);
    box-shadow: 0 8px 24px rgba(248, 81, 73, 0.15);
}

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

.feature-card h3 {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

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

/* ===== Gallery ===== */
.gallery {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-md);
}

.gallery-img {
    width: 100%;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
    transition: all var(--transition-normal);
    cursor: pointer;
}

.gallery-img:hover {
    transform: scale(1.02);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
    border-color: var(--accent-primary);
}

/* ===== Download Cards ===== */
.download-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-xl);
    max-width: 900px;
    margin: 0 auto;
}

.download-card {
    background: var(--bg-tertiary);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
    text-align: center;
}

.download-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--spacing-md);
    color: var(--btn-primary);
}

.download-icon svg {
    width: 100%;
    height: 100%;
}

.download-card h3 {
    font-size: 1.75rem;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

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

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

.download-buttons {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    margin: var(--spacing-lg) 0;
}

.first-run-note {
    font-size: 0.875rem;
    color: var(--text-tertiary);
    margin-top: var(--spacing-md);
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--border-color);
}

.first-run-note a {
    color: var(--btn-primary-hover);
    text-decoration: underline;
}

/* ===== Guides ===== */
.guides-content {
    max-width: 900px;
    margin: 0 auto;
}

.guides-intro {
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.guides-intro h3 {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

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

.guides-links {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-xl);
}

.guides-links a {
    padding: var(--spacing-md);
    background: var(--bg-elevated);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    text-align: center;
    transition: all var(--transition-normal);
    font-weight: 500;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
}

.guides-links a .flag-icon {
    display: inline-block;
    vertical-align: middle;
    margin-right: 2px;
}

.guides-links a .by-icon {
    font-size: 20px;
    width: 24px;
    height: 18px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-family: "Segoe UI Emoji", "Apple Color Emoji", "Noto Color Emoji", sans-serif;
}
.guides-links a:hover {
    background: var(--btn-primary);
    border-color: var(--btn-primary-hover);
    transform: translateY(-2px);
    color: white;
}

.guides-scripts {
    margin-top: var(--spacing-2xl);
    padding-top: var(--spacing-2xl);
    border-top: 1px solid var(--border-color);
    text-align: center;
}

.guides-scripts h3 {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

.guides-scripts > p {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
}

.script-links {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-md);
}

.script-link {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
    padding: var(--spacing-lg);
    background: var(--bg-elevated);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    transition: all var(--transition-normal);
}

.script-link:hover {
    background: var(--bg-tertiary);
    border-color: var(--accent-primary);
    transform: translateY(-2px);
}

.script-link strong {
    font-size: 1.125rem;
    color: var(--text-primary);
}

.script-link span {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

/* ===== Support ===== */
.faq-content {
    max-width: 900px;
    margin: 0 auto;
    display: grid;
    gap: var(--spacing-md);
}

.faq-item {
    background: var(--bg-tertiary);
    padding: var(--spacing-lg);
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
    transition: all var(--transition-normal);
}

.faq-item:hover {
    border-color: var(--accent-primary);
    transform: translateX(4px);
}

.faq-item h3 {
    font-size: 1.125rem;
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-sm);
}

.faq-item h3::before {
    content: "Q:";
    color: var(--accent-primary);
    font-weight: 700;
    flex-shrink: 0;
}

.faq-item p {
    color: var(--text-secondary);
    line-height: 1.7;
    padding-left: calc(var(--spacing-sm) + 1.5rem);
}

.support-content {
    text-align: center;
    max-width: 700px;
    margin: 0 auto;
}

.support-content p {
    font-size: 1.125rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
}

.support-buttons {
    display: flex;
    justify-content: center;
    gap: var(--spacing-lg);
    flex-wrap: wrap;
}

.support-link {
    display: inline-block;
    transition: transform var(--transition-normal);
}

.support-link:hover {
    transform: translateY(-4px);
}

.support-logo {
    height: 48px;
    width: auto;
}

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

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-lg);
}

.footer-info {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.footer-logo {
    width: 60px;
    height: 60px;
    border-radius: var(--radius-sm);
    margin-bottom: var(--spacing-sm);
}

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

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

.footer-links {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-lg);
}

.footer-column h4 {
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
    font-size: 1rem;
}

.footer-column a {
    display: block;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xs);
    transition: color var(--transition-fast);
}

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

.footer-bottom {
    max-width: 1200px;
    margin: 0 auto;
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--border-color);
    text-align: center;
}

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

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

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

/* ===== Responsive Design ===== */
@media (max-width: 968px) {
    .hero-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }

    .hero-text h1 {
        font-size: 2.5rem;
    }

    .hero-subtitle {
        font-size: 1.25rem;
    }

    .hero-image {
        order: -1;
    }

    .nav-links {
        gap: var(--spacing-md);
    }

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

@media (max-width: 640px) {
    .hero-text h1 {
        font-size: 2rem;
    }

    .hero-buttons {
        flex-direction: column;
    }

    .btn {
        width: 100%;
        justify-content: center;
    }

    .nav-links {
        display: none;
    }

    .section-title {
        font-size: 2rem;
    }

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

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

    .download-cards {
        grid-template-columns: 1fr;
    }

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

    .footer-links {
        grid-template-columns: 1fr;
    }
}

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

.hero-content,
.feature-card,
.gallery-img,
.download-card {
    animation: fadeInUp 0.6s ease-out;
}