/* ===== Sticky Navigation ===== */
.nav {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: rgba(18, 18, 18, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border);
    padding: var(--space-md) 0;
}

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

.nav-logo {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
    text-decoration: none;
}

.nav-links {
    display: flex;
    gap: var(--space-xl);
    align-items: center;
}

.nav-link {
    color: var(--text-secondary);
    transition: color 0.2s;
    font-weight: 500;
}

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

.nav-cta {
    background: var(--accent-primary);
    color: var(--bg-primary);
    padding: 10px 24px;
    border-radius: 6px;
    font-weight: 500;
    transition: background 0.2s;
}

.nav-cta:hover {
    background: var(--accent-hover);
    color: var(--bg-primary);
}

/* ===== Hero Section ===== */
.hero {
    padding: var(--space-3xl) 0;
    text-align: center;
}

.hero h1 {
    font-size: 3.5rem;
    color: var(--text-primary);
    margin-bottom: var(--space-lg);
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    max-width: 800px;
    margin: 0 auto var(--space-2xl);
    line-height: 1.8;
}

.terminal-box {
    background: var(--code-bg);
    border: 1px solid var(--border);
    border-radius: 8px;
    max-width: 600px;
    margin: 0 auto var(--space-xl);
    position: relative;
}

/* ===== CTA Buttons ===== */
.cta-buttons {
    display: flex;
    gap: var(--space-md);
    justify-content: center;
    margin-bottom: var(--space-2xl);
    flex-wrap: wrap;
}

.btn {
    padding: 14px 32px;
    border-radius: 6px;
    font-weight: 500;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.2s;
    display: inline-block;
    border: none;
    text-decoration: none;
}

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

.btn-primary:hover {
    background: var(--accent-hover);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(91, 157, 217, 0.3);
}

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

.btn-secondary:hover {
    border-color: var(--accent-primary);
    color: var(--accent-primary);
}

/* ===== Quick Stats ===== */
.quick-stats {
    display: flex;
    gap: var(--space-xl);
    justify-content: center;
    color: var(--text-dim);
    font-size: 0.95rem;
    flex-wrap: wrap;
}

.quick-stats span {
    display: flex;
    align-items: center;
    gap: 8px;
}

.quick-stats .icon {
    color: var(--accent-success);
}

/* ===== Features Grid ===== */
.features {
    background: var(--bg-secondary);
}

.features h2 {
    text-align: center;
}

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

.feature-card {
    background: var(--bg-surface);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: var(--space-xl);
    transition: all 0.3s;
}

.feature-card:hover {
    transform: translateY(-4px);
    border-color: var(--accent-primary);
    box-shadow: 0 4px 20px rgba(91, 157, 217, 0.1);
}

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

.feature-card h3 {
    margin-bottom: var(--space-md);
}

.feature-card p {
    color: var(--text-secondary);
    margin-bottom: 0;
}

/* ===== How It Works Section ===== */
.how-it-works {
    background: var(--bg-primary);
}

.how-it-works h2 {
    text-align: center;
}

.workflow-steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--space-xl);
    margin-top: var(--space-2xl);
}

.workflow-step {
    text-align: center;
    position: relative;
}

.step-number {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    background: var(--accent-primary);
    color: var(--bg-primary);
    border-radius: 50%;
    font-weight: 600;
    font-size: 1.25rem;
    margin-bottom: var(--space-md);
}

.workflow-step h3 {
    margin-bottom: var(--space-sm);
}

.workflow-step p {
    color: var(--text-secondary);
    margin-bottom: 0;
}

/* ===== Demo Section ===== */
.demo {
    background: var(--bg-secondary);
}

.demo h2 {
    text-align: center;
}

.demo-placeholder {
    max-width: 800px;
    margin: var(--space-2xl) auto 0;
    background: var(--bg-surface);
    border: 2px dashed var(--border);
    border-radius: 8px;
    padding: var(--space-3xl);
    text-align: center;
}

.demo-placeholder p {
    color: var(--text-secondary);
    margin-bottom: var(--space-md);
}

/* ===== Installation Section ===== */
.installation {
    background: var(--bg-primary);
}

.installation h2 {
    text-align: center;
}

.platform-buttons {
    display: flex;
    gap: var(--space-md);
    justify-content: center;
    margin: var(--space-2xl) 0;
    flex-wrap: wrap;
}

.platform-btn {
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    padding: var(--space-lg) var(--space-xl);
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s;
    min-width: 180px;
    text-align: center;
}

.platform-btn:hover {
    border-color: var(--accent-primary);
    background: var(--bg-surface);
}

.platform-btn.active {
    border-color: var(--accent-primary);
    background: rgba(91, 157, 217, 0.1);
}

.platform-icon {
    font-size: 2rem;
    margin-bottom: var(--space-sm);
}

.platform-name {
    font-weight: 600;
    color: var(--text-primary);
}

.install-content {
    max-width: 700px;
    margin: 0 auto;
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: var(--space-xl);
}

.install-section {
    display: none;
}

.install-section.active {
    display: block;
}

.requirements {
    background: var(--code-bg);
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: var(--space-md);
    margin: var(--space-lg) 0;
}

.requirements h4 {
    margin-bottom: var(--space-md);
    font-size: 1rem;
}

.requirements ul {
    list-style: none;
    padding-left: 0;
}

.requirements li {
    padding: 6px 0;
    color: var(--text-secondary);
}

.requirements li::before {
    content: "✓ ";
    color: var(--accent-success);
    font-weight: bold;
    margin-right: 8px;
}

.requirements li.required::before {
    content: "• ";
    color: var(--accent-warning);
}

.requirement-note {
    margin-top: var(--space-md);
    padding: var(--space-md);
    background: var(--bg-secondary);
    border-left: 3px solid var(--accent-success);
    font-size: 0.9rem;
    line-height: 1.5;
}

.requirement-note strong {
    color: var(--accent-success);
}

.requirement-note code {
    background: var(--code-bg);
    padding: 2px 6px;
    border-radius: 3px;
    font-size: 0.85rem;
}

/* ===== FAQ Section ===== */
.faq {
    background: var(--bg-secondary);
}

.faq h2 {
    text-align: center;
}

.faq-list {
    max-width: 800px;
    margin: var(--space-2xl) auto 0;
}

.faq-item {
    background: var(--bg-surface);
    border: 1px solid var(--border);
    border-radius: 8px;
    margin-bottom: var(--space-md);
    overflow: hidden;
}

.faq-question {
    padding: var(--space-lg);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: background 0.2s;
}

.faq-question:hover {
    background: var(--bg-surface);
}

.faq-question h3 {
    margin: 0;
    font-size: 1.1rem;
    font-weight: 500;
}

.faq-toggle {
    font-size: 1.5rem;
    color: var(--accent-primary);
    transition: transform 0.3s;
}

.faq-item.active .faq-toggle {
    transform: rotate(180deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
}

.faq-item.active .faq-answer {
    max-height: 500px;
}

.faq-answer-content {
    padding: var(--space-md) var(--space-lg) var(--space-md);
    color: var(--text-secondary);
}

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

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--space-lg);
}

.footer-links {
    display: flex;
    gap: var(--space-xl);
    flex-wrap: wrap;
}

.footer-link {
    color: var(--text-secondary);
    transition: color 0.2s;
}

.footer-link:hover {
    color: var(--accent-primary);
}

.footer-credit {
    color: var(--text-dim);
    font-size: 0.9rem;
}

/* ===== Lucide Icons ===== */
.icon {
    display: inline-block;
    vertical-align: middle;
    stroke: currentColor;
    fill: none;
    stroke-width: 2;
    stroke-linecap: round;
    stroke-linejoin: round;
}

.icon-sm {
    width: 16px;
    height: 16px;
}

.icon-md {
    width: 24px;
    height: 24px;
}

.icon-lg {
    width: 40px;
    height: 40px;
}

.icon-xl {
    width: 48px;
    height: 48px;
}