/* ==========================================================================
   Botong Sihai - Responsive Stylesheet
   ========================================================================== */

/* Large Desktop */
@media (max-width: 1440px) {
    :root {
        --container-padding: 5vw;
    }

    h1 {
        font-size: clamp(2.5rem, 6.5vw, 4.5rem);
    }
}

/* Desktop */
@media (max-width: 1200px) {
    :root {
        --container-padding: 4vw;
        --spacing-5xl: 9rem;
    }

    .feature-grid {
        grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    }

    .two-col {
        gap: var(--spacing-2xl);
    }
}

/* Tablet Landscape */
@media (max-width: 1024px) {
    :root {
        --spacing-5xl: 7rem;
        --spacing-4xl: 6rem;
    }

    h2 {
        font-size: clamp(2rem, 4.5vw, 3rem);
    }

    .feature-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-md);
    }

    .apps-showcase {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-md);
    }

    .two-col {
        grid-template-columns: 1fr;
        gap: var(--spacing-xl);
    }

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

    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: var(--spacing-xl);
    }
}

/* Tablet Portrait */
@media (max-width: 900px) {
    .nav-list,
    .nav-actions {
        display: none;
    }

    .menu-toggle {
        display: flex;
        z-index: 200;
    }

    .main-nav.mobile-open {
        display: flex;
        flex-direction: column;
        position: fixed;
        inset: 0;
        background: rgba(0, 0, 0, 0.98);
        backdrop-filter: blur(20px);
        -webkit-backdrop-filter: blur(20px);
        z-index: 150;
        padding: var(--spacing-4xl) var(--spacing-lg);
        align-items: flex-start;
        justify-content: flex-start;
    }

    .main-nav.mobile-open .nav-list {
        display: flex;
        flex-direction: column;
        gap: var(--spacing-lg);
        width: 100%;
        align-items: flex-start;
    }

    .main-nav.mobile-open .nav-link {
        font-size: var(--size-2xl);
        padding: var(--spacing-sm) 0;
        width: 100%;
        border-bottom: 1px solid var(--color-border-light);
    }

    .main-nav.mobile-open .nav-link::after {
        display: none;
    }

    .main-nav.mobile-open .nav-actions {
        display: flex;
        margin-top: var(--spacing-xl);
        width: 100%;
        flex-direction: column;
    }

    .main-nav.mobile-open .nav-actions .btn {
        width: 100%;
    }

    .hero-title {
        font-size: clamp(2rem, 7vw, 3.5rem);
    }

    .timeline::before {
        left: 24px;
        transform: none;
    }

    .timeline-item {
        width: 100%;
        margin-left: 0 !important;
        padding-left: 64px !important;
        padding-right: var(--spacing-md) !important;
        text-align: left !important;
    }

    .timeline-item::before {
        left: 16px !important;
        right: auto !important;
    }

    .section {
        padding: var(--spacing-4xl) 0;
    }

    .form-row {
        grid-template-columns: 1fr;
    }
}

/* Mobile Landscape */
@media (max-width: 768px) {
    :root {
        --container-padding: 6vw;
        --size-7xl: 4rem;
        --size-6xl: 3.5rem;
        --size-5xl: 2.75rem;
    }

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

    .apps-showcase {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-sm);
    }

    .app-card-content {
        padding: var(--spacing-sm);
    }

    .hero {
        min-height: 100vh;
    }

    .hero-title {
        font-size: clamp(1.875rem, 9vw, 2.75rem);
        line-height: 1.1;
    }

    .hero-subtitle {
        font-size: var(--size-base);
    }

    .hero-actions {
        flex-direction: column;
        align-items: stretch;
        gap: var(--spacing-xs);
    }

    .hero-actions .btn {
        width: 100%;
    }

    .section-header {
        margin-bottom: var(--spacing-2xl);
    }

    .section-eyebrow {
        font-size: var(--size-xs);
    }

    .footer-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }

    .footer-bottom {
        flex-direction: column;
        text-align: center;
        gap: var(--spacing-sm);
    }

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

    .stats {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-md);
        padding: var(--spacing-lg) 0;
    }

    .stat-number {
        font-size: clamp(2rem, 10vw, 3.5rem);
    }

    .marquee-item {
        font-size: var(--size-2xl);
    }

    .two-col {
        gap: var(--spacing-lg);
    }

    .feature-card,
    .app-card {
        padding: var(--spacing-lg);
    }
}

/* Mobile Portrait */
@media (max-width: 540px) {
    :root {
        --spacing-5xl: 5rem;
        --spacing-4xl: 4rem;
        --container-padding: 5vw;
    }

    h1 {
        font-size: clamp(1.75rem, 8vw, 2.5rem);
    }

    h2 {
        font-size: clamp(1.5rem, 7vw, 2.25rem);
    }

    h3 {
        font-size: var(--size-lg);
    }

    .hero-eyebrow {
        font-size: var(--size-xs);
        padding: 6px 12px;
    }

    .btn {
        padding: 10px 20px;
        font-size: var(--size-xs);
    }

    .btn-lg {
        padding: 14px 24px;
    }

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

    .feature-card-title {
        font-size: var(--size-lg);
    }

    .scroll-indicator {
        font-size: 0.625rem;
    }

    .back-to-top {
        width: 40px;
        height: 40px;
        bottom: var(--spacing-md);
        right: var(--spacing-md);
    }
}

/* Mobile Small */
@media (max-width: 380px) {
    .apps-showcase {
        grid-template-columns: 1fr;
    }

    .stat-item {
        padding: var(--spacing-xs);
    }
}

/* Hover detection - disable hover effects on touch devices */
@media (hover: none) {
    .feature-card:hover,
    .app-card:hover {
        transform: none;
    }

    .btn-primary:hover,
    .btn-secondary:hover,
    .btn-outline:hover {
        transform: none;
    }

    .nav-link:hover::after {
        width: 0;
    }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }

    html {
        scroll-behavior: auto;
    }
}

/* High contrast */
@media (prefers-contrast: high) {
    :root {
        --color-border: rgba(255, 255, 255, 0.3);
        --color-text-tertiary: #aaaaaa;
    }
}

/* Print styles */
@media print {
    .site-header,
    .site-footer,
    .back-to-top,
    .menu-toggle,
    .scroll-indicator,
    .hero-actions {
        display: none !important;
    }

    body {
        background: white;
        color: black;
    }
}