/* ==========================================================================
   1. VARIABLES & RESET
   ========================================================================== */
   :root {
    /* Color Palette */
    --color-primary: #003366; /* Deep Corporate Blue */
    --color-primary-light: #00509e;
    --color-primary-dark: #002244;
    
    --color-secondary: #ff7f00; /* Energetic Orange */
    --color-secondary-light: #ffa447;
    --color-secondary-dark: #cc6600;

    --color-bg-light: #ffffff;
    --color-bg-alt: #f0f5ff; /* Soft Blue/Gray for alternating sections */
    --color-bg-dark: #0a192f; /* Deep Dark Blue for Footer/Tech sections */

    --color-text-main: #333333;
    --color-text-muted: #666666;
    --color-text-light: #f4f4f4;

    /* Typography */
    --font-heading: 'Google Sans Flex', 'Google Sans', sans-serif;
    --font-body: 'Inter', sans-serif;
    --font-mono: 'JetBrains Mono', monospace;

    /* Spacing & Layout */
    --container-max-width: 1200px;
    --space-xs: 0.5rem;
    --space-sm: 1rem;
    --space-md: 2rem;
    --space-lg: 4rem;
    --space-xl: 6rem;

    /* Borders & Shadows */
    --border-radius-sm: 8px;
    --border-radius-md: 16px;
    --border-radius-lg: 24px;
    --border-radius-pill: 9999px;

    --shadow-sm: 0 4px 6px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 10px 20px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 20px 40px rgba(0, 0, 0, 0.12);
    --shadow-glass: 0 8px 32px 0 rgba(0, 34, 68, 0.1);

    /* Transitions */
    --transition-fast: 0.2s ease-in-out;
    --transition-medium: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-body);
    color: var(--color-text-main);
    background-color: var(--color-bg-light);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
    border-radius: var(--border-radius-md);
}

a {
    text-decoration: none;
    color: inherit;
    transition: color var(--transition-fast);
}

ul {
    list-style: none;
}

/* Base Utility Classes */
.container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 var(--space-md);
}

.container-fluid {
    width: 100%;
    overflow: hidden;
}

/* Utility Classes */
.text-center { text-align: center; }
.text-orange { color: var(--color-secondary); }
.mt-2 { margin-top: var(--space-xs); }
.mt-3 { margin-top: var(--space-sm); }
.mt-4 { margin-top: var(--space-md); }
.text-primary { color: var(--color-primary); }
.text-muted { color: var(--color-text-muted); }

/* Typography Rules */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.2;
    color: var(--color-primary-dark);
}

.quote-text {
    font-style: italic;
    font-weight: 500;
    color: var(--color-primary);
}

.data-metric {
    font-family: var(--font-mono);
    font-weight: 700;
}

.section-title {
    font-size: clamp(2rem, 4vw, 3rem);
    margin-bottom: var(--space-sm);
}

.section-subtitle {
    font-size: 1.125rem;
    color: var(--color-text-muted);
    max-width: 600px;
    margin: 0 auto var(--space-lg);
}

/* ==========================================================================
   2. COMPONENTS (BUTTONS, CARDS, BADGES)
   ========================================================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 1.5rem;
    font-family: var(--font-heading);
    font-weight: 600;
    border-radius: var(--border-radius-pill);
    cursor: pointer;
    transition: all var(--transition-medium);
    border: 2px solid transparent;
    text-align: center;
    min-height: 48px; /* Accessability touch target */
}

.btn-primary {
    background-color: var(--color-secondary);
    color: var(--color-bg-light);
    box-shadow: 0 4px 15px rgba(255, 127, 0, 0.3);
}

.btn-primary:hover, .btn-primary:focus {
    background-color: var(--color-secondary-dark);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(255, 127, 0, 0.4);
    color: white;
}

.btn-outline-primary {
    background-color: transparent;
    border-color: var(--color-primary);
    color: var(--color-primary);
}

.btn-outline-primary:hover, .btn-outline-primary:focus {
    background-color: var(--color-primary);
    color: var(--color-bg-light);
}

.btn-outline-white {
    background-color: transparent;
    border-color: var(--color-bg-light);
    color: var(--color-bg-light);
}

.btn-outline-white:hover, .btn-outline-white:focus {
    background-color: var(--color-bg-light);
    color: var(--color-primary-dark);
}

.btn-lg {
    padding: 1rem 2rem;
    font-size: 1.125rem;
}

.btn-full {
    width: 100%;
}

.section-badge {
    display: inline-block;
    padding: 0.25rem 1rem;
    background-color: rgba(0, 51, 102, 0.1);
    color: var(--color-primary);
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 0.875rem;
    border-radius: var(--border-radius-pill);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: var(--space-sm);
}

/* ==========================================================================
   3. HEADER & NAVIGATION
   ========================================================================== */
.main-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    transition: all var(--transition-medium);
    padding: var(--space-sm) 0;
}

 /* Sticky Bar State */
.main-header.scrolled {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    box-shadow: var(--shadow-sm);
    padding: var(--space-xs) 0;
}

.main-header.scrolled .header-container {
    padding: 0 var(--space-md);
    max-width: var(--container-max-width);
}

.header-container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 var(--space-md);
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: all var(--transition-medium);
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--color-bg-light);
    transition: color var(--transition-medium);
}

.logo-icon {
    font-size: 2rem;
}

.logo-text {
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 1.5rem;
    letter-spacing: -0.5px;
}

.main-header.scrolled .logo {
    color: var(--color-primary-dark);
}

/* Navigation Links */
.nav-list {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.nav-link {
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 0.95rem;
    color: var(--color-bg-light);
    display: flex;
    align-items: center;
    gap: 0.25rem;
    position: relative;
}

.main-header.scrolled .nav-link {
    color: var(--color-text-main);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--color-secondary);
    transition: width var(--transition-fast);
}

.nav-link:hover::after, .nav-link.active::after {
    width: 100%;
}

.main-header.scrolled .nav-link:hover::after, .main-header.scrolled .nav-link.active::after {
    background-color: var(--color-primary);
}

.btn-contact {
    background-color: var(--color-secondary);
    color: var(--color-bg-light) !important;
    padding: 0.5rem 1.25rem;
    border-radius: var(--border-radius-pill);
}
.btn-contact::after { display: none; }
.btn-contact:hover {
    background-color: var(--color-secondary-dark);
    transform: translateY(-2px);
}

/* Dropdown styling */
.dropdown {
    position: relative;
}

.dropdown-icon {
    font-size: 1.25rem;
    transition: transform var(--transition-fast);
}

.dropdown:hover .dropdown-icon {
    transform: rotate(180deg);
}

.dropdown-content {
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%) translateY(10px);
    background: var(--color-bg-light);
    min-width: 240px;
    border-radius: var(--border-radius-md);
    box-shadow: var(--shadow-md);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-medium);
    padding: 1rem 0;
    z-index: 100;
}

.dropdown:hover .dropdown-content {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(0);
}

.sub-nav li a {
    display: block;
    padding: 0.75rem 1.5rem;
    color: var(--color-text-main);
    font-weight: 500;
    transition: background-color var(--transition-fast), color var(--transition-fast);
}

.sub-nav li a:hover {
    background-color: var(--color-bg-alt);
    color: var(--color-primary);
}

/* Mobile Menu Button */
.hamburger-btn {
    display: none;
    background: none;
    border: none;
    color: var(--color-bg-light);
    cursor: pointer;
    z-index: 1001;
}

.hamburger-btn span {
    font-size: 2rem;
}

.main-header.scrolled .hamburger-btn {
    color: var(--color-primary-dark);
}

/* ==========================================================================
   4. SECTIONS LAYOUT
   ========================================================================== */

/* Hero Section */
.hero-section {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 80px;
    background-image: url('cortes/bg_hero.png');
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 34, 68, 0.5); /* Blue overlay 50% opacity */
    z-index: 1;
}

.hero-content {
    position: relative;
    z-index: 2;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-lg);
    align-items: center;
    color: var(--color-bg-light);
}

.hero-title {
    font-size: clamp(3rem, 5vw, 4.5rem);
    color: var(--color-bg-light);
    margin-bottom: var(--space-sm);
    line-height: 1.1;
}

.highlight {
    color: var(--color-secondary);
}

.hero-subtitle {
    font-size: 1.25rem;
    margin-bottom: var(--space-md);
    opacity: 0.9;
    max-width: 90%;
}

.hero-cta-group {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

/* Hero Slider */
.hero-slider-container {
    position: relative;
    width: 100%;
    max-width: 500px;
    margin-left: auto;
    aspect-ratio: 500/370;
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.slider-wrapper {
    position: relative;
    width: 100%;
    height: 100%;
}

.slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    transition: opacity var(--transition-slow);
}

.slide.active {
    opacity: 1;
    z-index: 2;
}

.slide img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 0; /* Override */
}

.slide-caption {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    padding: 2rem 1.5rem 1.5rem;
    background: linear-gradient(to top, rgba(0,0,0,0.8), transparent);
    color: white;
}

.slide-caption h3 {
    color: white;
    font-size: 1.5rem;
    margin-bottom: 0.25rem;
}

.slider-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(4px);
    border: none;
    color: white;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    cursor: pointer;
    z-index: 10;
    transition: background var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
}

.slider-btn:hover { background: rgba(255, 255, 255, 0.4); }
.prev-btn { left: 10px; }
.next-btn { right: 10px; }

.slider-dots {
    position: absolute;
    bottom: 15px;
    right: 15px;
    z-index: 10;
    display: flex;
    gap: 8px;
}

.dot {
    width: 10px;
    height: 10px;
    background: rgba(255, 255, 255, 0.5);
    border-radius: 50%;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.dot.active {
    background: var(--color-secondary);
    width: 24px;
    border-radius: var(--border-radius-pill);
}

/* About Section */
.about-section {
    padding: var(--space-xl) 0;
    background-color: var(--color-bg-alt);
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-lg);
    align-items: center;
}

.section-text {
    font-size: 1.125rem;
    color: var(--color-text-muted);
    margin-bottom: 1.5rem;
}

.about-image-wrapper {
    position: relative;
    border-radius: var(--border-radius-lg);
}

.about-img {
    width: 100%;
    max-width: 530px;
    object-fit: cover;
    box-shadow: var(--shadow-md);
    border-radius: var(--border-radius-lg);
}

.quote-card {
    position: absolute;
    bottom: -30px;
    left: -30px;
    background: white;
    padding: 1.5rem;
    border-radius: var(--border-radius-md);
    box-shadow: var(--shadow-lg);
    max-width: 300px;
    border-left: 4px solid var(--color-secondary);
}

.quote-icon {
    color: var(--color-secondary);
    font-size: 2rem;
    margin-bottom: 0.5rem;
}

.quote-author {
    display: block;
    margin-top: 1rem;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-text-main);
}

/* Proposal Framework */
.proposal-section {
    padding: var(--space-xl) 0;
    background-color: var(--color-bg-light);
}

.proposal-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.proposal-card {
    background: white;
    padding: 2rem;
    border-radius: var(--border-radius-md);
    box-shadow: var(--shadow-sm);
    border: 1px solid rgba(0,0,0,0.05);
    transition: transform var(--transition-medium), box-shadow var(--transition-medium);
}

.proposal-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
    background-color: var(--color-secondary);
    color: white;
}

.proposal-card:hover h3, 
.proposal-card:hover p {
    color: white;
}

.card-icon {
    width: 60px;
    height: 60px;
    background-color: var(--color-bg-alt);
    color: var(--color-primary);
    border-radius: var(--border-radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
    transition: background-color var(--transition-medium), color var(--transition-medium);
}

.card-icon span {
    font-size: 2rem;
}

.proposal-card:hover .card-icon {
    background-color: white;
    color: var(--color-secondary);
}

.proposal-card h3 {
    margin-bottom: 1rem;
    font-size: 1.25rem;
}

.proposal-card p {
    color: var(--color-text-muted);
}

/* Mission & Vision Section */
.mission-vision-section {
    position: relative;
    padding: var(--space-xl) 0;
    background: linear-gradient(135deg, var(--color-bg-dark), var(--color-primary-dark));
    color: white;
    overflow: hidden;
}

.tech-bg {
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    pointer-events: none;
    overflow: hidden;
}

/* Particles Generation */
.tech-bg::before, .tech-bg::after {
    content: '';
    position: absolute;
    width: 200%;
    height: 200%;
    top: -50%;
    left: -50%;
    background-image: 
        radial-gradient(circle, rgba(255,255,255,0.5) 2px, transparent 2px),
        radial-gradient(circle, rgba(255,255,255,0.3) 1px, transparent 1px),
        radial-gradient(circle, rgba(255,255,255,0.4) 3px, transparent 3px);
    background-size: 100px 100px, 60px 60px, 150px 150px;
    background-position: 0 0, 30px 30px, 75px 75px;
    animation: floatingParticles 40s linear infinite;
}

.tech-bg::after {
    background-size: 120px 120px, 80px 80px, 180px 180px;
    background-position: 10px 10px, 40px 40px, 90px 90px;
    animation: floatingParticles 60s linear infinite reverse;
    opacity: 0.7;
}

@keyframes floatingParticles {
    0% { transform: translateY(0) rotate(0deg); }
    100% { transform: translateY(-50%) rotate(5deg); }
}

.mv-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-lg);
    align-items: center;
    position: relative;
    z-index: 2;
}

.glass-img {
    border-radius: var(--border-radius-lg);
    box-shadow: 0 0 30px rgba(0,0,0,0.5);
    border: 1px solid rgba(255,255,255,0.1);
}

.mv-block {
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    padding: 2.5rem;
    border-radius: var(--border-radius-lg);
    margin-bottom: 1.5rem;
    transition: transform var(--transition-fast);
}

.mv-block:hover {
    transform: translateX(10px);
    background: rgba(255, 255, 255, 0.08);
}

.mv-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1rem;
}

.mv-header h3 {
    color: white;
    margin: 0;
}

.mv-icon {
    font-size: 2.5rem;
    color: var(--color-secondary);
}

.mv-block p {
    color: rgba(255, 255, 255, 0.9);
    font-size: 1.1rem;
}

/* Tabs Area Academica */
.academic-tabs-section {
    padding: var(--space-xl) 0;
    background-color: var(--color-bg-light);
}

.tabs-container {
    max-width: 900px;
    margin: 0 auto;
}

.tabs-header {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 2rem;
    background: var(--color-bg-alt);
    padding: 0.5rem;
    border-radius: var(--border-radius-pill);
}

.tab-btn {
    border: none;
    background: transparent;
    padding: 0.75rem 2rem;
    font-family: var(--font-heading);
    font-weight: 600;
    color: var(--color-text-muted);
    border-radius: var(--border-radius-pill);
    cursor: pointer;
    transition: all var(--transition-medium);
}

.tab-btn:hover {
    color: var(--color-primary);
}

.tab-btn.active {
    background: white;
    color: var(--color-primary);
    box-shadow: var(--shadow-sm);
}

.tab-content {
    display: none;
    animation: fadeIn var(--transition-medium);
}

.tab-content.active {
    display: block;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.tab-pane {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
    background: var(--color-bg-alt);
    padding: 3rem;
    border-radius: var(--border-radius-lg);
    box-shadow: inset 0 0 0 1px rgba(0,0,0,0.05);
}

.tab-features {
    margin-top: 1.5rem;
}

.tab-features li {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.5rem;
    color: var(--color-text-main);
    font-weight: 500;
}

.tab-features span {
    color: var(--color-secondary);
}

/* Teachers Section */
.teachers-section {
    padding: var(--space-xl) 0;
    background-color: var(--color-bg-alt);
}

.teachers-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.teacher-card {
    background: white;
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: transform var(--transition-medium);
    text-align: center;
}

.teacher-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-md);
}

.teacher-img-wrapper {
    overflow: hidden;
}

.teacher-card img {
    width: 100%;
    aspect-ratio: 1;
    object-fit: cover;
    border-radius: 0;
    transition: transform var(--transition-slow);
}

.teacher-card:hover img {
    transform: scale(1.05);
}

.teacher-info {
    padding: 1.5rem;
}

.teacher-info h4 {
    margin-bottom: 0.25rem;
    font-size: 1.25rem;
}

.teacher-info p {
    color: var(--color-secondary);
    font-weight: 500;
    font-size: 0.9rem;
}

/* News Section */
.news-section {
    padding: var(--space-xl) 0;
}

.flex-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start; /* Align to top (title level) */
    margin-bottom: 30px; /* spacing from text to cards */
}

.flex-header .section-subtitle {
    margin-bottom: 0;
}

.news-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.news-card {
    background: white;
    border-radius: var(--border-radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    border: 1px solid rgba(0,0,0,0.05);
    transition: transform var(--transition-medium);
}

.news-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
}

.news-img {
    width: 100%;
    height: 250px;
    object-fit: cover;
    border-radius: 0;
}

.news-content {
    padding: 1.5rem;
}

.news-meta {
    display: flex;
    justify-content: space-between;
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--color-text-muted);
    margin-bottom: 0.5rem;
}

.news-category {
    color: var(--color-secondary);
    font-weight: 700;
    text-transform: uppercase;
}

.news-title {
    font-size: 1.25rem;
    margin-bottom: 0.75rem;
}

.news-title a { color: var(--color-primary-dark); }
.news-title a:hover { color: var(--color-primary); text-decoration: underline; }

/* Docs and Calendar Section */
.docs-cal-section {
    padding: var(--space-xl) 0;
    background-color: var(--color-bg-alt);
}

.docs-cal-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-lg);
}

.col-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 2rem;
}

.col-icon {
    font-size: 2.5rem;
}

.calendar-list {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.calendar-list li {
    display: flex;
    background: white;
    padding: 1.25rem;
    border-radius: var(--border-radius-md);
    box-shadow: var(--shadow-sm);
    gap: 1.5rem;
    align-items: center;
    transition: transform var(--transition-fast);
}

.calendar-list li:hover { transform: translateX(5px); }

.cal-date {
    background: var(--color-primary-light);
    color: white;
    padding: 1rem;
    border-radius: var(--border-radius-md);
    text-align: center;
    min-width: 80px;
}

.cal-day {
    display: block;
    font-size: 1.5rem;
    font-weight: 700;
    line-height: 1;
}

.cal-month {
    display: block;
    font-size: 0.875rem;
    text-transform: uppercase;
}

.cal-info h4 { margin-bottom: 0.25rem; }
.cal-info p { color: var(--color-text-muted); margin: 0; }

.docs-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.docs-list li {
    display: flex;
    align-items: center;
    background: white;
    padding: 1rem;
    border-radius: var(--border-radius-md);
    box-shadow: var(--shadow-sm);
    gap: 1rem;
}

.doc-icon {
    width: 48px;
    height: 48px;
    background: rgba(255,127,0,0.1);
    color: var(--color-secondary);
    border-radius: var(--border-radius-sm);
    display: flex;
    justify-content: center;
    align-items: center;
}

.doc-info {
    flex: 1;
}
.doc-info h4 { font-size: 1rem; margin-bottom: 0.25rem; }
.doc-size { font-size: 0.8rem; color: var(--color-text-muted); font-family: var(--font-mono); }

.doc-dl {
    width: 40px;
    height: 40px;
    background: var(--color-bg-alt);
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    color: var(--color-primary);
    transition: all var(--transition-fast);
}

.doc-dl:hover {
    background: var(--color-primary);
    color: white;
}

/* Gallery Section */
.gallery-section {
    padding: var(--space-xl) 0;
    background: white;
}

.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1rem;
}

.gallery-item {
    position: relative;
    border-radius: var(--border-radius-md);
    overflow: hidden;
    aspect-ratio: 4/3;
    display: block;
}

.gallery-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 0;
    transition: transform var(--transition-slow);
}

.gallery-overlay {
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background: linear-gradient(to top, rgba(0,34,68,0.9), rgba(0,34,68,0.2));
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    padding: 1.5rem;
    color: white;
    opacity: 0;
    transition: opacity var(--transition-medium);
}

.gallery-item:hover img { transform: scale(1.1); }
.gallery-item:hover .gallery-overlay { opacity: 1; }

.gallery-overlay h4 { color: white; margin-bottom: 0.25rem; }
.gallery-overlay p { font-family: var(--font-mono); font-size: 0.85rem; color: rgba(255,255,255,0.8); }
.gallery-overlay .material-symbols-outlined { font-size: 2rem; margin-bottom: 0.5rem; }

/* Partners Marquee Pre-Footer */
.partners-section {
    padding: var(--space-lg) 0;
    background-color: #f8f9fa; /* Light Gray */
    overflow: hidden;
    border-top: 1px solid rgba(0,0,0,0.05);
}

.marquee-container {
    position: relative;
    width: 100%;
    height: 120px;
    display: flex;
    align-items: center;
}

.marquee-track {
    display: flex;
    gap: 1.5rem;
    white-space: nowrap;
    animation: marquee 30s linear infinite;
}

.marquee-container:hover .marquee-track {
    animation-play-state: paused;
}

@keyframes marquee {
    0% { transform: translateX(0); }
    100% { transform: translateX(-50%); } /* Shift specifically by 50% for duplicated content */
}

.partner-card {
    display: inline-flex;
    flex-shrink: 0;
    background: white;
    border-radius: var(--border-radius-md);
    box-shadow: var(--shadow-sm);
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.partner-card a {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    gap: 0.5rem;
    padding: 1rem 2rem;
    color: var(--color-text-muted);
}

.partner-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
}

.partner-card:hover a {
    color: var(--color-primary);
}

.logo-icon-large {
    font-size: 2.5rem;
}

.partner-logo {
    max-height: 80px;
    max-width: 150px;
    object-fit: contain;
    transition: all var(--transition-medium);
}

.partner-card:hover .partner-logo {
    transform: scale(1.05);
}

.marquee-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    z-index: 10;
    width: 40px; height: 40px;
    background: white;
    border: 1px solid rgba(0,0,0,0.1);
    border-radius: 50%;
    box-shadow: var(--shadow-sm);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-primary);
}

.mar-prev { left: 10px; }
.mar-next { right: 10px; }


/* ==========================================================================
   8. FOOTER
   ========================================================================== */
.main-footer {
    background-color: var(--color-bg-dark);
    color: rgba(255,255,255,0.7);
    padding-top: var(--space-xl);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-brand .logo-text { color: white; }
.footer-brand .logo-icon { color: var(--color-secondary); }

.social-links {
    display: flex;
    gap: 1rem;
}

.social-links a {
    width: 36px;
    height: 36px;
    background: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform var(--transition-fast), background var(--transition-fast);
}

.social-links a i {
    font-size: 18px;
    color: var(--color-bg-dark);
    transition: color var(--transition-fast), transform var(--transition-fast);
}

.social-links a:hover {
    transform: scale(1.1);
    background: var(--color-secondary);
}

.social-links a:hover i {
    color: white;
    transform: scale(1.1);
}

.text-footer-desc {
    color: rgba(255, 255, 255, 0.95);
    max-width: 300px;
    line-height: 1.5;
}

.footer-links h4, .footer-contact h4 {
    color: var(--color-secondary);
    margin-bottom: 1.5rem;
    font-size: 1.25rem;
}

.footer-links ul {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.footer-links a:hover {
    color: white;
    padding-left: 5px;
}

.footer-contact ul {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.footer-contact li {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.footer-contact .material-symbols-outlined {
    color: var(--color-secondary);
}

.footer-bottom {
    background-color: rgba(0,0,0,0.2);
    padding: 1.5rem 0;
    border-top: 1px solid rgba(255,255,255,0.05);
}

.footer-bottom-flex {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
    font-size: 0.875rem;
}

.policies {
    display: flex;
    gap: 1.5rem;
}

.policies a:hover, .credits a:hover {
    color: white;
    text-decoration: underline;
}

.credits a {
    color: var(--color-secondary);
    font-weight: 700;
}

.scroll-top-btn {
    position: absolute;
    bottom: 20px;
    right: 20px;
    width: 45px;
    height: 45px;
    background: var(--color-secondary);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-md);
    transition: transform var(--transition-fast), background var(--transition-fast);
    z-index: 100;
}

.scroll-top-btn:hover {
    background: var(--color-secondary-dark);
    transform: translateY(-5px);
    color: white;
}

/* Modals */
.modal-backdrop {
    position: fixed;
    top: 0; left: 0; width: 100%; height: 100%;
    background: rgba(0,22,44,0.9);
    backdrop-filter: blur(5px);
    z-index: 2000;
    display: flex;
    justify-content: center;
    align-items: center;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-fast);
}

.modal-backdrop.active {
    opacity: 1;
    visibility: visible;
}

.modal-content {
    background: white;
    padding: 2rem;
    border-radius: var(--border-radius-lg);
    max-width: 900px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
    position: relative;
    transform: scale(0.95);
    transition: transform var(--transition-fast);
}

.modal-backdrop.active .modal-content {
    transform: scale(1);
}

.modal-close {
    position: absolute;
    top: 15px; right: 15px;
    background: var(--color-bg-alt);
    border: none;
    width: 40px; height: 40px;
    border-radius: 50%;
    cursor: pointer;
    display: flex; align-items: center; justify-content: center;
    transition: all var(--transition-fast);
}

.modal-close:hover {
    background: var(--color-secondary);
    color: white;
}

/* ==========================================================================
   9. MEDIA QUERIES (RESPONSIVE)
   ========================================================================== */

/* Utility Classes for Responsive Display */
.d-none-mobile { display: block; }
.d-mobile-only { display: none; }

@media (max-width: 1024px) {
    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .hero-cta-group {
        justify-content: center;
    }

    .hero-slider-container {
        margin: 2rem auto 0;
    }

    .about-grid, .mv-grid, .docs-cal-grid {
        grid-template-columns: 1fr;
    }

    .quote-card {
        bottom: -20px;
        left: 20px;
        right: 20px;
        max-width: calc(100% - 40px);
    }

    .tab-pane {
        grid-template-columns: 1fr;
    }

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

@media (max-width: 768px) {
    :root {
        --space-xl: 4rem;
        --space-lg: 3rem;
    }

    .hamburger-btn {
        display: block;
    }

    .main-nav {
        position: fixed;
        top: 0;
        left: -100%;
        width: 100%;
        max-width: none;
        height: 100vh;
        height: 100dvh;
        background: var(--color-bg-light);
        padding: 5rem 2rem 2rem;
        transition: left var(--transition-medium);
        overflow-y: auto;
        overscroll-behavior: contain;
    }

    .main-nav.active {
        left: 0;
        box-shadow: 10px 0 30px rgba(0,0,0,0.5);
    }

    .nav-list {
        flex-direction: column;
        align-items: flex-start;
        gap: 1.5rem;
    }

    .dropdown-content {
        position: static;
        opacity: 1;
        visibility: visible;
        transform: none !important;
        box-shadow: none;
        background: transparent;
        margin-top: 0.5rem;
        display: none;
        width: 100%;
        padding: 0;
    }

    .dropdown.active .dropdown-content,
    .dropdown:hover .dropdown-content {
        display: block;
        transform: none !important;
    }

    .sub-nav li a {
        color: var(--color-primary-light);
        padding: 0.5rem 1.5rem;
        font-size: 1.1rem;
        border-left: 2px solid var(--color-secondary);
        margin-left: 1rem;
    }

    .nav-link {
        color: var(--color-primary-dark) !important;
        font-size: 1.25rem;
    }

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

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

    .d-none-mobile { display: none; }
    .d-mobile-only { display: block; }
    
    .footer-grid {
        grid-template-columns: 1fr;
    }

    .footer-bottom-flex {
        flex-direction: column;
        justify-content: center;
        text-align: center;
    }
}

/* Fix for overlapping pill logic in mobile */
.main-header.scrolled .hamburger-btn { color: var(--color-primary-dark); }
.hamburger-btn[aria-expanded="true"] { color: var(--color-primary-dark) !important; }