/* =====================================================
   WEST AFRICA LOGISTICS SOLUTIONS
   Responsive Styles - Mobile First Approach
   ===================================================== */

/* ==================== Mobile Base (Default - Mobile First) ==================== */

/* Mobile Navigation - Beautiful Slide-in Menu */
.main-nav {
    position: fixed;
    top: 0;
    right: -100%;
    width: 85%;
    max-width: 320px;
    height: 100vh;
    background: linear-gradient(180deg, #0d47a1 0%, #1a2332 100%);
    padding: calc(var(--header-height) + var(--space-6)) var(--space-6) var(--space-8);
    flex-direction: column;
    gap: var(--space-2);
    box-shadow: -10px 0 40px rgba(0, 0, 0, 0.3);
    transition: right 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: var(--z-fixed);
    overflow-y: auto;
}

.main-nav.active {
    right: 0;
}

.nav-link {
    width: 100%;
    padding: var(--space-4) var(--space-5);
    border-radius: var(--border-radius-lg);
    color: rgba(255, 255, 255, 0.9) !important;
    background: transparent !important;
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-medium);
    transition: all 0.3s ease;
    border-left: 3px solid transparent;
}

.nav-link:hover,
.nav-link.active {
    background: rgba(255, 255, 255, 0.15) !important;
    color: white !important;
    border-left-color: #4caf50;
    transform: translateX(5px);
}

.nav-link::after {
    display: none !important;
}

/* Mobile Menu Toggle - Hamburger to X animation */
.mobile-menu-toggle {
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 6px;
    width: 32px;
    height: 32px;
    padding: 4px;
    cursor: pointer;
    z-index: calc(var(--z-fixed) + 10);
    position: relative;
}

.mobile-menu-toggle span {
    display: block;
    width: 100%;
    height: 2.5px;
    background-color: var(--primary-blue);
    border-radius: 2px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    transform-origin: center;
}

.mobile-menu-toggle.active span {
    background-color: white;
}

.mobile-menu-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(6px, 6px);
}

.mobile-menu-toggle.active span:nth-child(2) {
    opacity: 0;
    transform: scaleX(0);
}

.mobile-menu-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(6px, -6px);
}

/* Mobile Menu Overlay */
.nav-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(4px);
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    z-index: calc(var(--z-fixed) - 1);
}

.nav-overlay.active {
    opacity: 1;
    visibility: visible;
}

body.nav-open {
    overflow: hidden;
}

/* Mobile Footer - Centered with Logo */
.site-footer {
    text-align: center;
}

.footer-grid {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-8);
    border-bottom: none;
    padding-bottom: var(--space-6);
}

.footer-brand {
    width: 100%;
    max-width: 400px;
    text-align: center;
    padding-bottom: var(--space-6);
    margin-bottom: 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-brand-logo {
    display: flex;
    justify-content: center;
    align-items: center;
    margin-bottom: var(--space-4);
    width: 100%;
}

.footer-brand-logo img,
.footer-brand-logo svg {
    height: 3rem;
    max-width: 200px;
    object-fit: contain;
}

.footer-brand p {
    max-width: 320px;
    margin: 0 auto;
    text-align: center;
    line-height: var(--line-height-relaxed);
}

.footer-column {
    text-align: center;
    width: 100%;
}

.footer-column h4 {
    margin-bottom: var(--space-4);
    font-size: var(--font-size-sm);
}

.footer-links {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-3);
}

/* Better WhatsApp link in footer */
.footer-link[id="footer-whatsapp"] {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-4);
    background: rgba(37, 211, 102, 0.15);
    border-radius: var(--border-radius-full);
    font-weight: var(--font-weight-medium);
    transition: all 0.3s ease;
}

.footer-link[id="footer-whatsapp"]:hover {
    background: rgba(37, 211, 102, 0.3);
    transform: scale(1.05);
}

.footer-bottom {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-4);
    text-align: center;
    padding-top: var(--space-6);
    margin-top: var(--space-4);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    width: 100%;
}

.footer-social {
    display: flex;
    justify-content: center;
    gap: var(--space-4);
}

/* Hide empty social links */
.footer-social a[href="#"],
.footer-social a[href=""],
.footer-social a[data-show="false"] {
    display: none;
}

/* ==================== Large Desktop (1400px+) ==================== */
@media (min-width: 1400px) {
    .container {
        max-width: 1320px;
    }
}

/* ==================== Desktop (1200px - 1399px) ==================== */
@media (max-width: 1399px) {
    .hero-image {
        width: 40%;
    }
}

/* ==================== Laptop (1024px+) - Desktop Navigation ==================== */
@media (min-width: 1024px) {
    /* Reset mobile nav for desktop */
    .main-nav {
        position: static;
        width: auto;
        max-width: none;
        height: auto;
        background: transparent;
        padding: 0;
        flex-direction: row;
        gap: var(--space-1);
        box-shadow: none;
        overflow: visible;
    }

    .nav-link {
        width: auto;
        padding: var(--space-3) var(--space-5);
        color: var(--gray-700) !important;
        background: transparent !important;
        font-size: var(--font-size-sm);
        border-left: none;
        transform: none;
        border-radius: var(--border-radius-full);
    }

    .nav-link:hover {
        background: rgba(13, 71, 161, 0.08) !important;
        color: var(--primary-blue) !important;
        transform: none;
    }

    .nav-link.active {
        background: linear-gradient(135deg, var(--primary-blue), #1976d2) !important;
        color: white !important;
        font-weight: var(--font-weight-semibold);
        box-shadow: 0 2px 8px rgba(13, 71, 161, 0.3);
    }

    .nav-link::after {
        display: none !important;
    }

    .mobile-menu-toggle {
        display: none;
    }

    .nav-overlay {
        display: none;
    }

    /* Desktop Footer - Horizontal Grid */
    .site-footer {
        text-align: left;
    }

    .footer-grid {
        display: grid;
        grid-template-columns: 1.5fr repeat(3, 1fr);
        align-items: start;
        gap: var(--space-8);
    }

    .footer-brand {
        width: auto;
        max-width: none;
        text-align: left;
        padding-bottom: 0;
        margin-bottom: 0;
        border-bottom: none;
    }

    .footer-brand-logo {
        justify-content: flex-start;
    }

    .footer-brand p {
        max-width: none;
        margin: 0;
        text-align: left;
    }

    .footer-column {
        text-align: left;
    }

    .footer-links {
        align-items: flex-start;
    }

    .footer-bottom {
        flex-direction: row;
        justify-content: space-between;
        align-items: center;
    }

    .footer-social {
        justify-content: flex-end;
    }
}

/* ==================== Laptop (1024px - 1199px) ==================== */
@media (max-width: 1199px) {
    :root {
        --section-padding-y: 4rem;
    }

    .grid-cols-4 {
        grid-template-columns: repeat(2, 1fr);
    }

    .hero-image {
        width: 35%;
        opacity: 0.7;
    }

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

    .compliance-comparison {
        gap: var(--space-6);
    }

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

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

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

    .cycle-ring {
        width: 320px;
        height: 320px;
    }

    .cycle-step {
        width: 80px;
        height: 80px;
        font-size: var(--font-size-xs);
    }

    .cycle-center {
        width: 100px;
        height: 100px;
    }
}

/* ==================== Tablet (768px - 1023px) ==================== */
@media (max-width: 1023px) {
    :root {
        --header-height: 4rem;
        --section-padding-y: 3.5rem;
    }

    /* Hero */
    .hero {
        min-height: 70vh;
    }

    .hero-title {
        font-size: var(--font-size-4xl);
    }

    .hero-image {
        display: none;
    }

    /* Page Hero Image - tablet: show smaller at bottom */
    .page-hero-image {
        position: relative;
        right: auto;
        top: auto;
        transform: none;
        width: 60%;
        max-width: 280px;
        margin: var(--space-6) auto 0;
        opacity: 0.85;
    }
    
    .page-hero-image img {
        width: 100%;
        height: auto;
        object-fit: contain;
    }
    
    .page-hero {
        flex-direction: column;
        text-align: center;
    }
    
    .page-hero-content {
        text-align: center;
    }

    /* Grids */
    .grid-cols-3,
    .pillars {
        grid-template-columns: repeat(2, 1fr);
    }

    .two-col-equal,
    .compliance-comparison,
    .contact-grid {
        grid-template-columns: 1fr;
    }

    .two-col-sidebar,
    .two-col-sidebar-right {
        grid-template-columns: 1fr;
    }

    /* Page Specific */
    .method-cards {
        grid-template-columns: repeat(2, 1fr);
    }

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

    .process-flow {
        flex-wrap: wrap;
        justify-content: center;
    }

    .process-step:not(:last-child)::after {
        display: none;
    }

    .maintenance-timeline::before {
        left: 20px;
    }

    .maintenance-item,
    .maintenance-item:nth-child(odd),
    .maintenance-item:nth-child(even) {
        flex-direction: row;
        padding-left: 50px;
    }

    .maintenance-content {
        width: 100%;
    }

    .maintenance-marker {
        left: 10px;
        transform: none;
    }

    .rca-branches {
        flex-direction: column;
        gap: var(--space-4);
    }

    .improvement-cycle {
        padding: var(--space-4);
    }

    .cycle-ring {
        display: none;
    }

    /* Certification Pathway - Stack on tablet */
    .certification-pathway {
        flex-direction: column;
        gap: var(--space-6);
    }

    .certification-arrow {
        transform: rotate(90deg);
    }
}

/* ==================== Large Mobile (640px - 767px) ==================== */
@media (max-width: 767px) {
    :root {
        --section-padding-y: 3rem;
        --section-padding-x: 1.25rem;
    }

    /* Typography */
    h1, .hero-title {
        font-size: var(--font-size-3xl);
    }

    h2, .section-title, .page-hero-title {
        font-size: var(--font-size-2xl);
    }

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

    /* Grids */
    .grid-cols-2,
    .grid-cols-3,
    .grid-cols-4,
    .pillars,
    .method-cards,
    .tools-grid,
    .tsm-authority-grid,
    .kpi-dashboard {
        grid-template-columns: 1fr;
    }

    /* Hero */
    .hero {
        min-height: 60vh;
        padding-top: calc(var(--header-height) + var(--space-6));
    }

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

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

    .page-hero {
        min-height: 35vh;
        padding-top: calc(var(--header-height) + var(--space-6));
    }

    /* Cards */
    .feature-card {
        padding: var(--space-6);
        text-align: center;
    }

    .feature-card-icon {
        width: 60px;
        height: 60px;
        margin: 0 auto var(--space-4);
    }

    .stat-card-value {
        font-size: var(--font-size-3xl);
    }

    /* Mobile Card Text Alignment - Fix for all cards */
    .card,
    .pillar,
    .icon-card,
    .tsm-module-card,
    .authority-card,
    .tool-card,
    .method-card,
    .regulation-card,
    .training-module,
    .training-module-card,
    .level-card,
    .certification-level,
    .recognition-card,
    .kpi-widget,
    .scorecard {
        text-align: center;
    }
    
    /* Training module cards - center all content on mobile */
    .training-module-card {
        display: flex;
        flex-direction: column;
        align-items: center;
    }
    
    .training-module-card .training-module-header {
        display: flex;
        flex-direction: column;
        align-items: center;
        gap: var(--space-2);
        margin-bottom: var(--space-3);
    }
    
    .training-module-card .training-module-icon {
        margin: 0 auto var(--space-3);
    }
    
    .training-module-card .training-module-meta {
        display: flex;
        flex-direction: column;
        align-items: center;
        gap: var(--space-2);
    }
    
    .training-module-card .card-title,
    .training-module-card p {
        text-align: center;
    }
    
    .card-title,
    .card-subtitle,
    .card-body,
    .pillar-title,
    .pillar-description,
    .icon-card-title,
    .icon-card-text {
        text-align: center;
    }
    
    /* Center icons and badges in cards on mobile */
    .card-header,
    .icon-card-icon,
    .pillar-icon,
    .pillar-number {
        margin-left: auto;
        margin-right: auto;
    }
    
    .badge {
        display: inline-flex;
        margin: 0 auto var(--space-2);
    }
    
    /* Lists in cards should be left-aligned for readability */
    .card ul,
    .card ol,
    .pillar ul,
    .pillar ol,
    .icon-card ul,
    .icon-card ol {
        text-align: left;
        display: inline-block;
    }

    /* Tables */
    .table-wrapper {
        margin: 0 calc(-1 * var(--section-padding-x));
        border-radius: 0;
        border-left: none;
        border-right: none;
    }

    /* Forms */
    .dvir-items {
        grid-template-columns: 1fr;
    }

    /* Page Specific */
    .vehicle-status-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .scorecard-metrics {
        grid-template-columns: 1fr;
    }

    .scorecard-header {
        flex-direction: column;
        gap: var(--space-4);
    }

    .process-step {
        min-width: 150px;
    }

    .contact-info-card {
        flex-direction: column;
        text-align: center;
        align-items: center;
    }
    
    .contact-info-card > div {
        display: flex;
        flex-direction: column;
        align-items: center;
    }

    .contact-info-icon {
        margin: 0 auto var(--space-3);
    }

    .roadmap-timeline {
        padding-left: var(--space-8);
    }

    .roadmap-marker {
        left: calc(-1 * var(--space-8) + 4px);
        width: 24px;
        height: 24px;
    }
    
    /* Incident Steps Mobile */
    .incident-steps {
        grid-template-columns: 1fr;
        gap: var(--space-4);
    }
    
    .incident-step {
        padding: var(--space-5);
        text-align: left;
    }
    
    .incident-step-number {
        width: 32px;
        height: 32px;
        font-size: var(--font-size-sm);
    }
    
    .incident-step-icon {
        width: 48px;
        height: 48px;
    }
    
    .incident-step h3 {
        font-size: var(--font-size-base);
    }
    
    .incident-step p {
        font-size: var(--font-size-sm);
    }
    
    .incident-step ul {
        font-size: var(--font-size-xs);
    }
    
    /* Icon Cards - Smarter 2-column layout on tablets, stacked on mobile */
    .icon-card {
        display: flex;
        flex-direction: column;
        align-items: center;
        text-align: center;
    }
    
    .icon-card-icon {
        margin-bottom: var(--space-4);
    }
    
    .icon-card-content {
        text-align: center;
    }
    
    .icon-card-content .link {
        display: inline-block;
        margin-top: var(--space-3);
    }
}

/* ==================== Mobile (480px - 639px) ==================== */
@media (max-width: 639px) {
    :root {
        --section-padding-x: 1rem;
    }

    /* Header */
    .header-logo img {
        height: 2rem;
        width: auto;
    }

    .header-inner {
        padding: 0 var(--space-4);
    }

    /* Sections */
    .section-header {
        margin-bottom: var(--space-8);
    }

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

    /* Buttons */
    .btn-lg {
        padding: var(--space-3) var(--space-6);
        font-size: var(--font-size-sm);
    }

    /* Cards */
    .card {
        padding: var(--space-5);
    }

    .pillar {
        padding: var(--space-6) var(--space-4);
    }

    .pillar-icon {
        width: 60px;
        height: 60px;
    }

    .pillar-number {
        width: 40px;
        height: 40px;
    }

    /* Tabs */
    .tab-list {
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }

    .tab-button {
        white-space: nowrap;
        padding: var(--space-2) var(--space-4);
    }

    /* Accordion */
    .accordion-header {
        padding: var(--space-3) var(--space-4);
    }

    .accordion-body {
        padding: var(--space-3) var(--space-4);
    }

    /* Process Flow */
    .process-step-icon {
        width: 50px;
        height: 50px;
    }

    .process-step-title {
        font-size: var(--font-size-sm);
    }

    /* Timeline */
    .timeline {
        padding-left: var(--space-8);
    }

    .timeline-marker {
        left: calc(-1 * var(--space-8) + 5px);
        width: 16px;
        height: 16px;
    }
}

/* ==================== Small Mobile (< 480px) ==================== */
@media (max-width: 479px) {
    :root {
        --font-size-base: 0.9rem;
    }

    /* Hide page hero images on very small screens */
    .page-hero-image {
        display: none;
    }
    
    /* Ensure cards are fully centered on small mobile */
    .card,
    .pillar,
    .icon-card,
    .feature-card {
        text-align: center !important;
    }
    
    .card *,
    .pillar *,
    .icon-card * {
        text-align: center;
    }
    
    /* Except lists - keep them readable */
    .card ul,
    .card ol,
    .pillar ul,
    .pillar ol {
        text-align: left;
        padding-left: var(--space-4);
    }
    
    /* Contact info card on mobile - fully centered */
    .contact-info-card {
        flex-direction: column !important;
        text-align: center !important;
        align-items: center;
    }
    
    .contact-info-card > div {
        display: flex;
        flex-direction: column;
        align-items: center;
        text-align: center;
    }
    
    .contact-info-card h4,
    .contact-info-card p,
    .contact-info-card a {
        text-align: center;
    }
    
    .contact-info-icon {
        margin: 0 auto var(--space-3) !important;
    }
    
    .contact-info-content {
        text-align: center;
    }
    
    /* Driver requirements table - centered card style on mobile */
    .data-table td {
        display: flex !important;
        flex-direction: column !important;
        align-items: center !important;
        justify-content: center !important;
        text-align: center !important;
        gap: var(--space-2);
    }
    
    .data-table td::before {
        text-align: center !important;
        display: block !important;
        width: 100%;
        margin-right: 0 !important;
        text-transform: none !important;
    }
    
    .data-table td strong {
        text-align: center;
    }
    
    .data-table .badge {
        margin: 0 auto;
    }

    /* Hero */
    .hero-title {
        font-size: var(--font-size-2xl);
    }

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

    .page-hero-title {
        font-size: var(--font-size-xl);
    }

    /* Stats */
    .stat-card-value {
        font-size: var(--font-size-2xl);
    }

    .stat-card-label {
        font-size: var(--font-size-xs);
    }

    /* KPI */
    .kpi-value {
        font-size: var(--font-size-2xl);
    }

    /* Vehicle Status */
    .vehicle-status-grid {
        grid-template-columns: 1fr;
    }

    /* Badges */
    .badge {
        font-size: 0.65rem;
        padding: var(--space-1) var(--space-2);
    }
}

/* ==================== Touch Device Optimizations ==================== */
@media (hover: none) and (pointer: coarse) {
    .btn:hover,
    .card-hover:hover,
    .nav-link:hover {
        transform: none;
    }

    .btn:active {
        transform: scale(0.98);
    }

    .card-hover:active {
        transform: scale(0.99);
    }

    /* Larger touch targets */
    .nav-link {
        min-height: 44px;
    }

    .btn {
        min-height: 44px;
    }

    .form-check-input {
        width: 24px;
        height: 24px;
    }

    .accordion-header {
        min-height: 48px;
    }

    .checklist-checkbox {
        width: 28px;
        height: 28px;
    }
}

/* ==================== High Resolution Displays ==================== */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
    .site-header {
        border-bottom-width: 0.5px;
    }

    .card {
        box-shadow: 0 1px 3px rgba(0, 0, 0, 0.08), 0 2px 8px rgba(0, 0, 0, 0.04);
    }
}

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

    .hero-image,
    .page-hero-image {
        animation: none;
    }
}

/* ==================== Dark Mode Support (Future) ==================== */
@media (prefers-color-scheme: dark) {
    /* Prepared for dark mode - uncomment when ready */
    /*
    :root {
        --white: #1a1a1a;
        --gray-50: #2a2a2a;
        --gray-100: #3a3a3a;
        --gray-200: #4a4a4a;
        --gray-900: #f5f5f5;
        --text-primary: #f5f5f5;
        --text-secondary: #b0b0b0;
        --card-bg: #2a2a2a;
    }
    */
}

/* ==================== Print Styles ==================== */
@media print {
    .site-header,
    .site-footer,
    .mobile-menu-toggle,
    .btn,
    .hero-actions,
    .footer-social {
        display: none !important;
    }

    .hero,
    .page-hero {
        min-height: auto;
        padding: 2rem 0;
        background: none !important;
        color: black !important;
    }

    .hero-title,
    .page-hero-title,
    .section-title {
        color: black !important;
    }

    .section {
        padding: 1.5rem 0;
        page-break-inside: avoid;
    }

    .card {
        box-shadow: none;
        border: 1px solid #ddd;
        page-break-inside: avoid;
    }

    .grid-cols-2,
    .grid-cols-3,
    .grid-cols-4 {
        grid-template-columns: repeat(2, 1fr);
    }

    a[href]:after {
        content: " (" attr(href) ")";
        font-size: 0.8em;
        color: #666;
    }

    a[href^="#"]:after,
    a[href^="javascript"]:after {
        content: "";
    }
}

/* ==================== Landscape Mobile ==================== */
@media (max-width: 896px) and (orientation: landscape) {
    .hero {
        min-height: 100vh;
        padding-top: calc(var(--header-height) + var(--space-4));
        padding-bottom: var(--space-4);
    }

    .hero-title {
        font-size: var(--font-size-2xl);
    }

    .page-hero {
        min-height: 80vh;
    }
}

/* ==================== iOS Safe Area ==================== */
@supports (padding: max(0px)) {
    .site-header {
        padding-left: max(var(--section-padding-x), env(safe-area-inset-left));
        padding-right: max(var(--section-padding-x), env(safe-area-inset-right));
    }

    .site-footer {
        padding-bottom: max(var(--space-8), env(safe-area-inset-bottom));
    }

    .main-nav.active {
        padding-bottom: max(var(--space-4), env(safe-area-inset-bottom));
    }
}