/* ==========================================================================
   OpenCast — Modern Minimal Landing Page Styles (No Gradients)
   ========================================================================== */

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: var(--font-sans);
}

body {
    background-color: var(--bg-page);
    color: var(--text-primary);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    overflow-x: hidden;
    position: relative;
    transition: background-color var(--transition-base), color var(--transition-base);
}

.container {
    width: 100%;
    max-width: 1140px;
    margin: 0 auto;
    padding: 0 24px;
    position: relative;
    z-index: 1;
}

/* Header */
header {
    padding: 18px 0;
    border-bottom: 1px solid var(--border);
    background: var(--header-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    position: sticky;
    top: 0;
    z-index: 100;
    transition: background-color var(--transition-base), border-color var(--transition-base);
}

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

.brand-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
    color: var(--text-primary);
}

.brand-logo-img {
    width: 36px;
    height: 36px;
    border-radius: var(--radius-sm);
    object-fit: contain;
    display: block;
}

.brand-name {
    font-size: 1.3rem;
    font-weight: 800;
    letter-spacing: -0.03em;
    color: var(--text-primary);
}

.nav-right {
    display: flex;
    align-items: center;
    gap: 14px;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 22px;
}

.nav-link {
    text-decoration: none;
    color: var(--text-secondary);
    font-size: 0.92rem;
    font-weight: 600;
    transition: color var(--transition-fast);
}

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

.nav-link.highlight {
    color: var(--brand-primary);
    font-weight: 700;
}

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

/* Mobile Hamburger Menu Button */
.btn-mobile-menu {
    display: none;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    gap: 5px;
    width: 38px;
    height: 38px;
    border-radius: var(--radius-sm);
    background: var(--bg-surface);
    border: 1px solid var(--border);
    cursor: pointer;
    padding: 0;
    transition: all var(--transition-base);
    flex-shrink: 0;
}

.btn-mobile-menu:hover {
    background: var(--bg-surface-hover);
    border-color: var(--border-hover);
}

.hamburger-bar {
    width: 18px;
    height: 2px;
    background-color: var(--text-primary);
    border-radius: 2px;
    transition: transform var(--transition-base), opacity var(--transition-base);
}

.btn-mobile-menu.is-active .hamburger-bar:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

.btn-mobile-menu.is-active .hamburger-bar:nth-child(2) {
    opacity: 0;
}

.btn-mobile-menu.is-active .hamburger-bar:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

/* Mobile Navigation Dropdown */
.mobile-nav-menu {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    background: var(--bg-surface);
    border-bottom: 1px solid var(--border);
    padding: 16px 24px;
    box-shadow: var(--shadow-lg);
    flex-direction: column;
    gap: 8px;
    z-index: 99;
    animation: mobileNavSlide 0.2s ease-out forwards;
}

.mobile-nav-menu.is-open {
    display: flex;
}

@keyframes mobileNavSlide {
    from {
        opacity: 0;
        transform: translateY(-8px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.mobile-nav-link {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 16px;
    border-radius: var(--radius-md);
    text-decoration: none;
    color: var(--text-primary);
    font-size: 0.96rem;
    font-weight: 600;
    transition: all var(--transition-fast);
    background: transparent;
}

.mobile-nav-link:hover {
    background: var(--bg-surface-hover);
    color: var(--brand-primary);
}

.mobile-nav-link.highlight {
    background: var(--brand-primary);
    color: #ffffff !important;
    font-weight: 700;
}

.mobile-nav-link.highlight:hover {
    background: var(--brand-primary-hover);
}

.mobile-nav-link.playstore {
    border: 1px solid var(--border);
    margin-top: 4px;
    color: var(--text-secondary);
}

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

/* Hero Section */
.hero {
    padding: 88px 0 64px;
    text-align: center;
}

.badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 14px;
    background: rgba(23, 169, 247, 0.1);
    border: 1px solid rgba(23, 169, 247, 0.28);
    border-radius: var(--radius-full);
    color: var(--brand-primary);
    font-size: 0.82rem;
    font-weight: 700;
    margin-bottom: 24px;
    letter-spacing: 0.03em;
    text-transform: uppercase;
}

.badge-dot {
    width: 7px;
    height: 7px;
    background: var(--brand-primary);
    border-radius: 50%;
}

h1 {
    font-size: 3.5rem;
    line-height: 1.12;
    font-weight: 800;
    letter-spacing: -0.04em;
    margin-bottom: 22px;
    max-width: 860px;
    margin-left: auto;
    margin-right: auto;
    color: var(--text-primary);
}

h1 span {
    color: var(--brand-primary);
}

.hero-desc {
    font-size: 1.18rem;
    line-height: 1.65;
    color: var(--text-secondary);
    max-width: 680px;
    margin: 0 auto 38px;
}

.hero-actions {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
    flex-wrap: wrap;
}

.btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    background: var(--brand-primary);
    color: #ffffff !important;
    font-size: 1rem;
    font-weight: 700;
    padding: 14px 28px;
    border-radius: var(--radius-md);
    text-decoration: none;
    box-shadow: 0 4px 14px rgba(23, 169, 247, 0.35);
    transition: transform var(--transition-fast), background-color var(--transition-fast), box-shadow var(--transition-fast);
}

.btn-primary:hover {
    transform: translateY(-2px);
    background: var(--brand-primary-hover);
    box-shadow: 0 6px 20px rgba(23, 169, 247, 0.45);
}

.btn-secondary {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    background: var(--bg-surface);
    border: 1px solid var(--border);
    color: var(--text-primary);
    font-size: 1rem;
    font-weight: 600;
    padding: 14px 24px;
    border-radius: var(--radius-md);
    text-decoration: none;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-fast);
}

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

/* Screenshots Showcase Section */
.screenshots-section {
    padding: 10px 0 70px;
}

.screenshots-track-wrapper {
    position: relative;
    width: 100%;
    overflow: hidden;
}

.screenshots-grid {
    display: flex;
    gap: 20px;
    overflow-x: auto;
    padding: 16px 8px 28px;
    scroll-snap-type: x mandatory;
    -webkit-overflow-scrolling: touch;
    justify-content: center;
}

@media (max-width: 1160px) {
    .screenshots-grid {
        justify-content: flex-start;
        padding-left: 16px;
        padding-right: 16px;
    }
}

.screenshot-card {
    flex: 0 0 210px;
    max-width: 220px;
    border-radius: 24px;
    border: 2px solid var(--border);
    background: var(--bg-surface);
    overflow: hidden;
    scroll-snap-align: center;
    box-shadow: var(--shadow-sm);
    transition: transform var(--transition-fast), border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.screenshot-card:hover {
    transform: translateY(-6px);
    border-color: var(--brand-primary);
    box-shadow: 0 16px 32px rgba(23, 169, 247, 0.25);
}

.screenshot-img {
    width: 100%;
    height: auto;
    display: block;
    aspect-ratio: 9 / 16;
    object-fit: cover;
}

.screenshots-grid::-webkit-scrollbar {
    height: 6px;
}

.screenshots-grid::-webkit-scrollbar-track {
    background: transparent;
}

.screenshots-grid::-webkit-scrollbar-thumb {
    background: var(--border);
    border-radius: 9999px;
}

.screenshots-grid::-webkit-scrollbar-thumb:hover {
    background: var(--brand-primary);
}

/* Feature Cards Grid */
.features {
    padding: 50px 0 90px;
}

.section-header {
    text-align: center;
    margin-bottom: 50px;
}

.section-header h2 {
    font-size: 2.15rem;
    font-weight: 800;
    letter-spacing: -0.03em;
    margin-bottom: 12px;
    color: var(--text-primary);
}

.section-header p {
    color: var(--text-secondary);
    font-size: 1.05rem;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 24px;
}

.feature-card {
    background: var(--bg-surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 32px;
    transition: transform var(--transition-fast), background var(--transition-fast), border-color var(--transition-fast), box-shadow var(--transition-fast);
    box-shadow: var(--shadow-sm);
}

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

.feature-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-md);
    background: rgba(23, 169, 247, 0.1);
    color: var(--brand-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
}

.feature-card h3 {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 10px;
    letter-spacing: -0.02em;
    color: var(--text-primary);
}

.feature-card p {
    font-size: 0.95rem;
    line-height: 1.6;
    color: var(--text-secondary);
}

/* Footer */
footer {
    margin-top: auto;
    border-top: 1px solid var(--border);
    padding: 36px 0;
    background: var(--bg-surface);
    transition: background-color var(--transition-base), border-color var(--transition-base);
}

.footer-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 20px;
}

.footer-left {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.footer-copy {
    font-size: 0.88rem;
    color: var(--text-muted);
}

.footer-links {
    display: flex;
    gap: 24px;
    flex-wrap: wrap;
}

.footer-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    transition: color var(--transition-fast);
}

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

/* Responsive */
@media (max-width: 768px) {
    h1 {
        font-size: 2.35rem;
    }

    .hero {
        padding: 56px 0 36px;
    }

    .screenshots-section {
        padding: 0 0 50px;
    }

    .screenshot-card {
        flex: 0 0 175px;
        max-width: 185px;
        border-radius: 18px;
    }

    .nav-links {
        display: none;
    }

    .btn-mobile-menu {
        display: inline-flex;
    }

    .footer-content {
        flex-direction: column;
        align-items: flex-start;
    }
}