/* ============================================================
   NOACH INDEX STYLES
   Version: 2.0.0
   Last Updated: 2025
   ============================================================ */

/* ============================================================
   CSS CUSTOM PROPERTIES
   ============================================================ */
:root {
    /* Brand Colors */
    --color-primary: #2563eb;
    --color-primary-hover: #1d4ed8;
    --color-primary-light: #3b82f6;
    
    /* Neutrals */
    --color-slate-50: #f8fafc;
    --color-slate-100: #f1f5f9;
    --color-slate-200: #e2e8f0;
    --color-slate-600: #475569;
    --color-slate-800: #1e293b;
    --color-slate-900: #0f172a;
    
    /* Semantic */
    --color-background: #ffffff;
    --color-text: #0f172a;
    --color-text-muted: #64748b;
    
    /* Timing */
    --transition-fast: 150ms ease;
    --transition-base: 200ms ease;
    --transition-smooth: 300ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 500ms cubic-bezier(0.4, 0, 0.2, 1);
    
    /* Spacing */
    --header-height: 4rem;
}

/* ============================================================
   BASE RESET & DEFAULTS
   ============================================================ */
*,
*::before,
*::after {
    box-sizing: border-box;
}

html {
    font-family: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
    scroll-behavior: smooth;
    line-height: 1.5;
}

body {
    margin: 0;
    min-height: 100vh;
    background-color: var(--color-background);
    color: var(--color-text);
}

/* ============================================================
   ACCESSIBILITY
   ============================================================ */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* Focus States */
a:focus-visible,
button:focus-visible,
[role="button"]:focus-visible,
input:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

/* Skip Link (if needed) */
.skip-link {
    position: absolute;
    top: -40px;
    left: 0;
    padding: 8px 16px;
    background: var(--color-primary);
    color: white;
    z-index: 9999;
    transition: top var(--transition-base);
}

.skip-link:focus {
    top: 0;
}

/* ============================================================
   PAGE LOADER
   ============================================================ */
#loader {
    position: fixed;
    inset: 0;
    z-index: 9999;
    background-color: var(--color-slate-200);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 1;
    visibility: visible;
    transition: opacity 500ms ease-out, visibility 500ms ease-out;
}

#loader.fade-out {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
}

#loader .loader-icon {
    width: 60px;
    height: 60px;
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); opacity: 1; }
    50% { transform: scale(1.05); opacity: 0.8; }
}

@media (min-width: 640px) {
    #loader .loader-icon {
        width: 75px;
        height: 75px;
    }
}

@media (min-width: 768px) {
    #loader .loader-icon {
        width: 90px;
        height: 90px;
    }
}

/* Main Content */
#main-content {
    opacity: 0;
    visibility: hidden;
    transition: opacity 500ms ease-out, visibility 500ms ease-out;
}

#main-content.visible {
    opacity: 1;
    visibility: visible;
}

/* No-JS Fallback */
html:not(.js) #loader {
    display: none;
}

html:not(.js) #main-content {
    opacity: 1;
    visibility: visible;
}

/* ============================================================
   NAVIGATION
   ============================================================ */

/* Mobile Menu Toggle */
.mobile-menu {
    max-height: 0;
    opacity: 0;
    visibility: hidden;
    overflow: hidden;
    transition: 
        max-height var(--transition-smooth),
        opacity var(--transition-smooth),
        visibility var(--transition-smooth);
}

#mobile-menu-toggle:checked ~ .mobile-menu {
    max-height: 400px;
    opacity: 1;
    visibility: visible;
}

/* Menu Icons */
.menu-icon {
    display: block;
}

.close-icon {
    display: none;
}

#mobile-menu-toggle:checked ~ .nav-content .menu-toggle-label .menu-icon {
    display: none;
}

#mobile-menu-toggle:checked ~ .nav-content .menu-toggle-label .close-icon {
    display: block;
}

/* Nav Links */
.nav-link,
.mobile-nav-link {
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 4px;
    left: 50%;
    width: 0;
    height: 2px;
    background: white;
    transition: width var(--transition-base), left var(--transition-base);
}

.nav-link:hover::after,
.nav-link:focus::after {
    width: 60%;
    left: 20%;
}

/* ============================================================
   HERO SECTION
   ============================================================ */
.hero-section {
    position: relative;
}

.hero-video-container {
    background: linear-gradient(135deg, #1e3a5f 0%, #0f172a 100%);
}

.hero-overlay {
    background: linear-gradient(
        to bottom,
        rgba(0, 0, 0, 0.45) 0%,
        rgba(0, 0, 0, 0.2) 40%,
        rgba(0, 0, 0, 0.25) 60%,
        rgba(0, 0, 0, 0.55) 100%
    );
}

.hero-heading {
    text-shadow: 0 2px 12px rgba(0, 0, 0, 0.5);
}

/* ============================================================
   CAROUSEL
   ============================================================ */
.carousel-container {
    perspective: 1200px;
}

.carousel-track {
    position: relative;
    height: 520px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.slide {
    position: absolute;
    width: 100%;
    max-width: 700px;
    transition: 
        transform var(--transition-slow),
        opacity var(--transition-slow),
        filter var(--transition-slow);
    transform-origin: center;
    will-change: transform, opacity;
}

.slide.active {
    z-index: 30;
    opacity: 1;
    filter: blur(0);
    transform: scale(1) translateX(0);
}

.slide.prev {
    z-index: 10;
    opacity: 0.35;
    filter: blur(3px);
    transform: scale(0.88) translateX(-45%);
    pointer-events: none;
}

.slide.next {
    z-index: 10;
    opacity: 0.35;
    filter: blur(3px);
    transform: scale(0.88) translateX(45%);
    pointer-events: none;
}

.slide:not(.active):not(.prev):not(.next) {
    z-index: 0;
    opacity: 0;
    filter: blur(8px);
    transform: scale(0.7);
    pointer-events: none;
}

/* Tablet */
@media (max-width: 1024px) {
    .carousel-track {
        height: 500px;
    }
    
    .slide {
        max-width: 85%;
    }
    
    .slide.prev {
        transform: scale(0.82) translateX(-40%);
        opacity: 0.25;
    }
    
    .slide.next {
        transform: scale(0.82) translateX(40%);
        opacity: 0.25;
    }
}

/* Mobile */
@media (max-width: 640px) {
    .carousel-track {
        height: 460px;
    }
    
    .slide {
        max-width: 94%;
    }
    
    .slide.prev,
    .slide.next {
        opacity: 0;
        transform: scale(0.75) translateX(0);
    }
}

/* Carousel Navigation */
.carousel-nav-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: transparent;
    border: none;
    cursor: pointer;
    transition: background-color var(--transition-base);
}

.carousel-nav-btn:hover {
    background-color: rgba(0, 0, 0, 0.08);
}

.carousel-nav-btn:active {
    background-color: rgba(0, 0, 0, 0.12);
}

.carousel-nav-btn svg {
    stroke: var(--color-slate-600);
    transition: stroke var(--transition-base);
}

.carousel-nav-btn:hover svg {
    stroke: var(--color-slate-800);
}

/* Carousel Dots */
.carousel-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background-color: #cbd5e1;
    border: none;
    padding: 0;
    cursor: pointer;
    transition: 
        background-color var(--transition-base),
        transform var(--transition-base);
}

.carousel-dot:hover {
    background-color: #94a3b8;
}

.carousel-dot.active {
    background-color: var(--color-primary);
    transform: scale(1.3);
}

/* ============================================================
   SECTION DIVIDER
   ============================================================ */
.section-divider {
    height: 2px;
    width: 90%;
    max-width: 1200px;
    margin: 2rem auto;
    border: none;
    background: linear-gradient(
        to right,
        transparent,
        rgba(100, 116, 139, 0.4),
        transparent
    );
}

/* ============================================================
   SERVICE CARDS
   ============================================================ */
.service-card {
    transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.service-card:hover {
    transform: translateY(-3px);
}

/* ============================================================
   DISASTER CARDS
   ============================================================ */
.disaster-card {
    transition: 
        transform var(--transition-base),
        box-shadow var(--transition-smooth);
}

.disaster-card:hover {
    transform: translateY(-2px);
}

/* ============================================================
   MAP LEGEND
   ============================================================ */
.map-legend {
    font-size: 0.75rem;
}

@media (max-width: 640px) {
    .map-legend {
        position: relative;
        top: auto;
        right: auto;
        margin-top: 1rem;
        width: 100%;
        flex-direction: row;
        flex-wrap: wrap;
        justify-content: center;
        gap: 1rem;
    }
}

/* ============================================================
   ICONS
   ============================================================ */
.stat-icon {
    width: 32px;
    height: 32px;
}

/* ============================================================
   BUTTONS
   ============================================================ */
.btn-primary,
.btn-secondary {
    position: relative;
    overflow: hidden;
}

.btn-primary::after,
.btn-secondary::after {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle, rgba(255,255,255,0.2) 0%, transparent 70%);
    opacity: 0;
    transition: opacity var(--transition-base);
}

.btn-primary:hover::after,
.btn-secondary:hover::after {
    opacity: 1;
}

/* ============================================================
   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;
    }
    
    html {
        scroll-behavior: auto;
    }
    
    .slide {
        transition: none;
    }
    
    #loader .loader-icon {
        animation: none;
    }
}

/* ============================================================
   PRINT STYLES
   ============================================================ */
@media print {
    #loader,
    .carousel-nav-btn,
    .carousel-dots,
    .mobile-menu,
    .menu-toggle-label {
        display: none !important;
    }
    
    #main-content {
        opacity: 1 !important;
        visibility: visible !important;
    }
    
    .hero-section {
        height: auto !important;
        min-height: auto !important;
        max-height: none !important;
    }
    
    .slide {
        position: relative !important;
        transform: none !important;
        opacity: 1 !important;
        filter: none !important;
        page-break-inside: avoid;
    }
    
    .slide:not(.active) {
        display: none;
    }
}

/* ============================================================
   HIGH CONTRAST MODE
   ============================================================ */
@media (prefers-contrast: high) {
    :root {
        --color-primary: #0047ab;
    }
    
    .carousel-dot {
        border: 2px solid currentColor;
    }
    
    .carousel-nav-btn {
        border: 2px solid currentColor;
    }
}