/* ===== CSS Variables ===== */
:root {
    --primary-color: #af6025;
    --secondary-color: #1a1a1a;
    --accent-color: #d4923f;
    --text-color: #e0e0e0;
    --bg-color: #0d0d0d;
    --bg-secondary: #1a1a1a;
    --border-color: #333;
    --shadow: 0 4px 6px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.5);
    --gradient: linear-gradient(135deg, #af6025 0%, #d4923f 100%);
}

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

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

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* ===== Header ===== */
.header {
    background: var(--bg-secondary);
    border-bottom: 2px solid var(--primary-color);
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    backdrop-filter: blur(10px);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.logo {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.logo-img {
    width: 48px;
    height: 48px;
    border-radius: 8px;
}

.logo h1 {
    font-size: 1.5rem;
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.header-links {
    display: flex;
    gap: 1rem;
    align-items: center;
}

/* ===== Buttons ===== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    border: 2px solid transparent;
}

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

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

.btn-secondary {
    background: transparent;
    color: var(--text-color);
    border-color: var(--primary-color);
}

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

.btn-github {
    background: #24292e;
    color: white;
}

.btn-github:hover {
    background: #2f363d;
}

.btn-large {
    padding: 1rem 2rem;
    font-size: 1.1rem;
}

/* ===== Hero Section ===== */
.hero {
    padding: 6rem 0;
    background: linear-gradient(135deg, #0d0d0d 0%, #1a1a1a 100%);
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.hero-text h2 {
    font-size: 3rem;
    margin-bottom: 1rem;
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: #b0b0b0;
    margin-bottom: 2rem;
}

.badges {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 2rem;
    flex-wrap: wrap;
}

.badges img {
    height: 20px;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.demo-card {
    background: var(--bg-secondary);
    border: 2px solid var(--border-color);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.demo-header {
    background: #2d2d2d;
    padding: 0.75rem;
    display: flex;
    gap: 0.5rem;
}

.demo-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: #555;
}

.demo-content {
    padding: 3rem;
    text-align: center;
}

.demo-button {
    background: var(--gradient);
    color: white;
    padding: 1rem 2rem;
    border-radius: 8px;
    font-weight: 600;
    display: inline-block;
    margin-bottom: 1rem;
    box-shadow: var(--shadow);
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.05); }
}

.demo-text {
    color: var(--accent-color);
    font-size: 0.9rem;
}

/* ===== Features Section ===== */
.features {
    padding: 6rem 0;
    background: var(--bg-color);
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.feature-card {
    background: var(--bg-secondary);
    border: 2px solid var(--border-color);
    border-radius: 12px;
    padding: 2rem;
    text-align: center;
    transition: all 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-5px);
    border-color: var(--primary-color);
    box-shadow: var(--shadow-lg);
}

.feature-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.feature-card h3 {
    color: var(--accent-color);
    margin-bottom: 1rem;
}

.feature-card p {
    color: #b0b0b0;
}

/* ===== Installation Section ===== */
.installation {
    padding: 6rem 0;
    background: var(--bg-secondary);
}

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

.step {
    display: flex;
    gap: 2rem;
    margin-bottom: 2rem;
    padding: 2rem;
    background: var(--bg-color);
    border: 2px solid var(--border-color);
    border-radius: 12px;
    transition: all 0.3s ease;
}

.step:hover {
    border-color: var(--primary-color);
}

.step-number {
    flex-shrink: 0;
    width: 50px;
    height: 50px;
    background: var(--gradient);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: bold;
}

.step-content h3 {
    color: var(--accent-color);
    margin-bottom: 0.5rem;
}

.step-content p {
    color: #b0b0b0;
}

.step-content code {
    background: var(--bg-secondary);
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    color: var(--accent-color);
    font-family: 'Courier New', monospace;
}

.test-section {
    margin-top: 3rem;
    padding: 2rem;
    background: var(--bg-color);
    border: 2px solid var(--primary-color);
    border-radius: 12px;
    text-align: center;
}

.test-section h3 {
    color: var(--accent-color);
    margin-bottom: 1rem;
}

.test-link {
    display: inline-block;
    margin: 1rem 0;
    padding: 1rem 2rem;
    background: var(--bg-secondary);
    color: var(--primary-color);
    text-decoration: none;
    border-radius: 8px;
    border: 2px solid var(--primary-color);
    transition: all 0.3s ease;
}

.test-link:hover {
    background: var(--primary-color);
    color: white;
}

.test-hint {
    margin-top: 1rem;
    color: #b0b0b0;
}

/* ===== Architecture Section ===== */
.architecture {
    padding: 6rem 0;
    background: var(--bg-color);
}

.architecture-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: start;
}

.architecture-diagram {
    background: var(--bg-secondary);
    border: 2px solid var(--border-color);
    border-radius: 12px;
    padding: 2rem;
}

.layer {
    background: var(--gradient);
    color: white;
    padding: 1rem;
    border-radius: 8px;
    text-align: center;
    font-weight: 600;
    margin: 0.5rem 0;
}

.arrow {
    text-align: center;
    font-size: 2rem;
    color: var(--accent-color);
}

.architecture-principles {
    background: var(--bg-secondary);
    border: 2px solid var(--border-color);
    border-radius: 12px;
    padding: 2rem;
}

.architecture-principles h3 {
    color: var(--accent-color);
    margin-bottom: 1rem;
}

.architecture-principles ul {
    list-style: none;
    margin-bottom: 2rem;
}

.architecture-principles li {
    padding: 0.5rem 0;
    color: #b0b0b0;
}

.architecture-principles code {
    background: var(--bg-color);
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    color: var(--accent-color);
    font-family: 'Courier New', monospace;
}

/* ===== Documentation Section ===== */
.documentation {
    padding: 6rem 0;
    background: var(--bg-secondary);
}

.docs-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.doc-card {
    background: var(--bg-color);
    border: 2px solid var(--border-color);
    border-radius: 12px;
    padding: 2rem;
    text-align: center;
    text-decoration: none;
    transition: all 0.3s ease;
}

.doc-card:hover {
    transform: translateY(-5px);
    border-color: var(--primary-color);
    box-shadow: var(--shadow-lg);
}

.doc-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.doc-card h3 {
    color: var(--accent-color);
    margin-bottom: 0.5rem;
}

.doc-card p {
    color: #b0b0b0;
}

/* ===== Footer ===== */
.footer {
    background: var(--bg-secondary);
    border-top: 2px solid var(--primary-color);
    padding: 3rem 0 1rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-section h4 {
    color: var(--accent-color);
    margin-bottom: 1rem;
}

.footer-section ul {
    list-style: none;
}

.footer-section li {
    margin-bottom: 0.5rem;
}

.footer-section a {
    color: #b0b0b0;
    text-decoration: none;
    transition: color 0.3s ease;
}

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

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid var(--border-color);
    color: #888;
}

/* ===== Responsive Design ===== */
@media (max-width: 768px) {
    .hero-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .hero-text h2 {
        font-size: 2rem;
    }

    .architecture-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

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

    .logo {
        flex-direction: column;
    }

    .step {
        flex-direction: column;
        gap: 1rem;
    }
}

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

.feature-card,
.step,
.doc-card {
    animation: fadeIn 0.6s ease-out;
}