/* ==========================================================================
   CSS VARIABLES & DESIGN TOKENS
   ========================================================================== */
:root {
    /* Color Palette - Premium Light Theme (Comfortable Contrast) */
    --color-bg-primary: #fbfdfa;    /* Off-white background, slightly warm/green tint */
    --color-bg-secondary: #f3f6f0;  /* Soft light green-gray background for sections */
    --color-bg-card: #ffffff;       /* Pure white for cards to pop out */
    
    --color-text-primary: #1c2620;  /* Dark charcoal green for headings */
    --color-text-secondary: #4a5c51;/* Muted slate-green for paragraphs */
    --color-text-muted: #728679;    /* Lighter text for secondary metadata */
    
    --color-primary: #1e4d2b;       /* Dark Green (PLVC Signature) */
    --color-primary-light: #e5eedf; /* Soft green highlight background */
    --color-primary-hover: #15381f; /* Deeper green for active states */
    
    --color-accent: #ff7d13;        /* Warm Orange for highlights & CTAs */
    --color-accent-light: #fff2e6;  /* Soft orange background */
    --color-accent-hover: #e05b00;  /* Deeper orange */
    
    --color-border: #e1e8db;        /* Crisp, light borders */
    --color-border-focus: #c2d1b7;  /* Border when active/focused */
    
    /* Layout Sizes & Spacing */
    --max-width: 1200px;
    --header-height: 80px;
    --border-radius-sm: 8px;
    --border-radius-md: 16px;
    --border-radius-lg: 24px;
    
    /* Transition Variables */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.5s ease;
    
    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(30, 77, 43, 0.04);
    --shadow-md: 0 12px 30px rgba(30, 77, 43, 0.06);
    --shadow-lg: 0 20px 40px rgba(30, 77, 43, 0.09);
    --shadow-focus: 0 0 0 4px rgba(30, 77, 43, 0.15);
}

/* ==========================================================================
   RESET & SYSTEM STYLES
   ========================================================================== */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
    background-color: var(--color-bg-primary);
}

body {
    font-family: 'Sarabun', system-ui, -apple-system, sans-serif;
    color: var(--color-text-primary);
    line-height: 1.65;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
    font-family: 'Prompt', sans-serif;
    font-weight: 600;
    line-height: 1.3;
    color: var(--color-text-primary);
}

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

ul, ol {
    list-style: none;
}

img, svg {
    display: block;
    max-width: 100%;
}

/* Common Layout Components */
.container {
    width: 100%;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 24px;
}

.section-header {
    margin-bottom: 56px;
}

.text-center {
    text-align: center;
}

.section-tag {
    display: inline-block;
    font-family: 'Prompt', sans-serif;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--color-primary);
    background-color: var(--color-primary-light);
    padding: 6px 16px;
    border-radius: 50px;
    margin-bottom: 12px;
    letter-spacing: 0.5px;
}

.section-title {
    font-size: 2.2rem;
    color: var(--color-text-primary);
    margin-bottom: 16px;
}

.header-divider {
    width: 60px;
    height: 4px;
    background-color: var(--color-accent);
    margin: 0 auto 20px;
    border-radius: 2px;
}

.section-subtitle {
    font-size: 1.1rem;
    color: var(--color-text-secondary);
    max-width: 700px;
    margin: 0 auto;
}

/* ==========================================================================
   BUTTONS & ACTIONS
   ========================================================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-family: 'Prompt', sans-serif;
    font-size: 0.95rem;
    font-weight: 500;
    padding: 14px 28px;
    border-radius: var(--border-radius-sm);
    cursor: pointer;
    transition: var(--transition-normal);
    border: 2px solid transparent;
    gap: 8px;
}

.btn-icon {
    width: 18px;
    height: 18px;
    transition: transform var(--transition-fast);
}

.btn-primary {
    background-color: var(--color-primary);
    color: #ffffff;
}

.btn-primary:hover {
    background-color: var(--color-primary-hover);
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(30, 77, 43, 0.15);
}

.btn-primary:hover .btn-icon {
    transform: translateX(4px);
}

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

.btn-outline:hover {
    background-color: var(--color-primary-light);
    transform: translateY(-2px);
}

.btn-block {
    display: flex;
    width: 100%;
}

.btn-sm {
    padding: 8px 16px;
    font-size: 0.85rem;
}

/* ==========================================================================
   HEADER / NAVIGATION BAR (Glassmorphism)
   ========================================================================== */
.main-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--header-height);
    background-color: rgba(251, 253, 250, 0.8);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(225, 232, 219, 0.5);
    z-index: 1000;
    transition: var(--transition-normal);
}

.main-header.scrolled {
    height: 70px;
    background-color: rgba(251, 253, 250, 0.95);
    box-shadow: var(--shadow-sm);
}

.header-container {
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.brand-logo {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo-icon {
    width: 32px;
    height: 32px;
    color: var(--color-primary);
}

.logo-text {
    display: flex;
    flex-direction: column;
}

.logo-title {
    font-family: 'Prompt', sans-serif;
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-primary);
    line-height: 1.1;
}

.logo-subtitle {
    font-size: 0.75rem;
    color: var(--color-text-secondary);
    letter-spacing: 0.5px;
}

.nav-menu {
    display: flex;
    gap: 8px;
}

.nav-link {
    font-family: 'Prompt', sans-serif;
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--color-text-secondary);
    padding: 8px 16px;
    border-radius: var(--border-radius-sm);
}

.nav-link:hover, .nav-link.active {
    color: var(--color-primary);
    background-color: var(--color-primary-light);
}

/* Burger Menu Toggle */
.menu-toggle {
    display: none;
    flex-direction: column;
    justify-content: space-between;
    width: 30px;
    height: 21px;
    background: transparent;
    border: none;
    cursor: pointer;
    z-index: 1001;
}

.menu-toggle .bar {
    width: 100%;
    height: 3px;
    background-color: var(--color-primary);
    border-radius: 2px;
    transition: var(--transition-fast);
}

/* ==========================================================================
   HERO SECTION
   ========================================================================== */
.hero-section {
    position: relative;
    padding-top: calc(var(--header-height) + 60px);
    padding-bottom: 80px;
    min-height: 90vh;
    display: flex;
    align-items: center;
    background-color: var(--color-bg-primary);
    overflow: hidden;
}

.hero-bg-shapes {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 0;
}

.hero-bg-shapes .shape {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
}

.hero-bg-shapes .shape-1 {
    width: 400px;
    height: 400px;
    background-color: rgba(30, 77, 43, 0.04);
    top: -100px;
    right: -100px;
}

.hero-bg-shapes .shape-2 {
    width: 300px;
    height: 300px;
    background-color: rgba(255, 125, 13, 0.03);
    bottom: -50px;
    left: -50px;
}

.hero-container {
    position: relative;
    z-index: 2;
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    align-items: center;
    gap: 40px;
}

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

.hero-content .badge {
    display: inline-block;
    font-family: 'Prompt', sans-serif;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--color-primary);
    background-color: var(--color-primary-light);
    padding: 6px 16px;
    border-radius: 50px;
    margin-bottom: 24px;
}

.hero-title {
    font-size: 3.2rem;
    line-height: 1.25;
    margin-bottom: 20px;
}

.hero-title .highlight {
    color: var(--color-primary);
    background: linear-gradient(120deg, var(--color-primary-light) 0%, transparent 100%);
    display: inline-block;
    padding-right: 20px;
}

.hero-description {
    font-size: 1.15rem;
    color: var(--color-text-secondary);
    margin-bottom: 36px;
    max-width: 580px;
}

.hero-actions {
    display: flex;
    gap: 16px;
    margin-bottom: 48px;
    width: 100%;
}

.hero-stats {
    display: flex;
    align-items: center;
    gap: 24px;
}

.stat-item {
    display: flex;
    flex-direction: column;
}

.stat-number {
    font-family: 'Prompt', sans-serif;
    font-size: 2rem;
    font-weight: 700;
    color: var(--color-primary);
    line-height: 1;
    margin-bottom: 4px;
}

.stat-label {
    font-size: 0.8rem;
    color: var(--color-text-secondary);
}

.stat-divider {
    width: 1px;
    height: 40px;
    background-color: var(--color-border);
}

/* Hero Tech Vector Illustration Styling */
.hero-graphic {
    width: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
}

.graphic-wrapper {
    position: relative;
    width: 100%;
    max-width: 450px;
}

.tech-svg {
    width: 100%;
    height: auto;
}

/* Float Node Animation */
@keyframes float {
    0% { transform: translateY(0px); }
    50% { transform: translateY(-10px); }
    100% { transform: translateY(0px); }
}

.float-node {
    animation: float 6s ease-in-out infinite;
}

.node-1 { animation-delay: 0s; }
.node-2 { animation-delay: 2s; }
.node-3 { animation-delay: 4s; }

.spin-circle {
    transform-origin: 250px 250px;
    animation: spin 30s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* ==========================================================================
   ABOUT & HISTORY SECTION
   ========================================================================== */
.about-section {
    padding: 100px 0;
    background-color: var(--color-bg-secondary);
}

.about-grid {
    display: grid;
    grid-template-columns: 0.9fr 1.1fr;
    gap: 64px;
    align-items: center;
}

.about-text-content h3 {
    font-size: 1.8rem;
    margin-bottom: 20px;
}

.about-text-content p {
    color: var(--color-text-secondary);
    margin-bottom: 20px;
}

/* Timeline Components */
.about-timeline {
    position: relative;
    padding-left: 24px;
}

.about-timeline::before {
    content: '';
    position: absolute;
    top: 10px;
    left: 0;
    bottom: 10px;
    width: 2px;
    background-color: var(--color-border);
}

.timeline-card {
    position: relative;
    margin-bottom: 32px;
}

.timeline-card:last-child {
    margin-bottom: 0;
}

.timeline-card::before {
    content: '';
    position: absolute;
    left: -29px;
    top: 6px;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background-color: var(--color-bg-secondary);
    border: 3px solid var(--color-primary);
    z-index: 2;
    transition: var(--transition-fast);
}

.timeline-card:hover::before {
    background-color: var(--color-accent);
    border-color: var(--color-accent);
    transform: scale(1.2);
}

.timeline-year {
    font-family: 'Prompt', sans-serif;
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: 6px;
}

.timeline-info {
    background-color: var(--color-bg-card);
    padding: 20px 24px;
    border-radius: var(--border-radius-md);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--color-border);
    transition: var(--transition-normal);
}

.timeline-info:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
    border-color: var(--color-primary-light);
}

.timeline-info h4 {
    font-size: 1.1rem;
    margin-bottom: 8px;
}

.timeline-info p {
    font-size: 0.9rem;
    color: var(--color-text-secondary);
}

/* ==========================================================================
   CURRICULUM SECTION
   ========================================================================== */
.curriculum-section {
    padding: 100px 0;
    background-color: var(--color-bg-primary);
}

.curriculum-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.curriculum-card {
    background-color: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-md);
    padding: 40px 32px;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    box-shadow: var(--shadow-sm);
    transition: var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.curriculum-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    border-color: var(--color-primary-light);
}

.curriculum-card.featured {
    border-color: var(--color-primary);
    box-shadow: var(--shadow-md);
}

.curriculum-card.featured:hover {
    box-shadow: var(--shadow-lg);
}

.card-badge {
    font-family: 'Prompt', sans-serif;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--color-text-secondary);
    background-color: var(--color-bg-secondary);
    padding: 4px 12px;
    border-radius: 50px;
    margin-bottom: 24px;
}

.badge-featured {
    color: #ffffff;
    background-color: var(--color-accent);
}

.card-icon-wrapper {
    width: 60px;
    height: 60px;
    background-color: var(--color-primary-light);
    border-radius: var(--border-radius-sm);
    color: var(--color-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 24px;
}

.card-icon-wrapper svg {
    width: 28px;
    height: 28px;
}

.curriculum-card.featured .card-icon-wrapper {
    background-color: var(--color-primary);
    color: #ffffff;
}

.card-title {
    font-size: 1.4rem;
    margin-bottom: 8px;
}

.card-major {
    font-family: 'Prompt', sans-serif;
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--color-primary);
    margin-bottom: 16px;
}

.card-text {
    font-size: 0.95rem;
    color: var(--color-text-secondary);
    margin-bottom: 32px;
    flex-grow: 1;
}

.btn-card-details {
    background: transparent;
    border: none;
    font-family: 'Prompt', sans-serif;
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--color-primary);
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 0;
    transition: var(--transition-fast);
}

.btn-card-details .arrow-icon {
    width: 16px;
    height: 16px;
    transition: transform var(--transition-fast);
}

.btn-card-details:hover {
    color: var(--color-accent);
}

.btn-card-details:hover .arrow-icon {
    transform: translateX(4px);
    stroke: var(--color-accent);
}

/* ==========================================================================
   RESPONSIBILITIES SECTION
   ========================================================================== */
.responsibilities-section {
    padding: 100px 0;
    background-color: var(--color-bg-secondary);
}

.resp-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.resp-card {
    background-color: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-md);
    padding: 32px;
    box-shadow: var(--shadow-sm);
    transition: var(--transition-normal);
}

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

.resp-icon {
    width: 48px;
    height: 48px;
    background-color: var(--color-primary-light);
    color: var(--color-primary);
    border-radius: var(--border-radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
}

.resp-icon svg {
    width: 22px;
    height: 22px;
}

.resp-card h4 {
    font-size: 1.15rem;
    margin-bottom: 12px;
    line-height: 1.4;
}

.resp-card p {
    font-size: 0.9rem;
    color: var(--color-text-secondary);
}

/* ==========================================================================
   ACTIVITIES & NEWS SECTION
   ========================================================================== */
.activities-section {
    padding: 100px 0;
    background-color: var(--color-bg-primary);
}

.activities-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.activity-card {
    background-color: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: var(--transition-normal);
}

.activity-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    border-color: var(--color-primary-light);
}

.activity-img-wrapper {
    position: relative;
    width: 100%;
    height: 200px;
    overflow: hidden;
}

.activity-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform var(--transition-slow);
}

.activity-card:hover .activity-placeholder {
    transform: scale(1.05);
}

.active-color-1 { background: linear-gradient(135deg, #1e4d2b 0%, #3e8e50 100%); }
.active-color-2 { background: linear-gradient(135deg, #ff7d13 0%, #ffa95c 100%); }
.active-color-3 { background: linear-gradient(135deg, #1b355a 0%, #386db3 100%); }

.placeholder-svg {
    width: 60px;
    height: 60px;
    opacity: 0.8;
}

.activity-content {
    padding: 24px;
}

.activity-meta {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 0.8rem;
    color: var(--color-text-muted);
    margin-bottom: 12px;
}

.activity-category {
    font-family: 'Prompt', sans-serif;
    font-weight: 600;
    color: var(--color-primary);
    text-transform: uppercase;
}

.activity-card-title {
    font-size: 1.15rem;
    margin-bottom: 12px;
    line-height: 1.4;
}

.activity-text {
    font-size: 0.9rem;
    color: var(--color-text-secondary);
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* ==========================================================================
   CONTACT SECTION & FORM
   ========================================================================== */
.contact-section {
    padding: 100px 0;
    background-color: var(--color-bg-secondary);
}

.contact-grid {
    display: grid;
    grid-template-columns: 0.92fr 1.08fr;
    gap: 48px;
    align-items: start;
}

/* Info Panel */
.contact-info-panel {
    background-color: var(--color-primary);
    color: #ffffff;
    padding: 48px;
    border-radius: var(--border-radius-md);
    box-shadow: var(--shadow-md);
}

.contact-info-panel h3 {
    color: #ffffff;
    font-size: 1.8rem;
    margin-bottom: 8px;
}

.panel-desc {
    color: rgba(255, 255, 255, 0.85);
    margin-bottom: 40px;
}

.info-list {
    display: flex;
    flex-direction: column;
    gap: 28px;
}

.info-item {
    display: flex;
    gap: 20px;
    align-items: flex-start;
}

.info-icon {
    width: 44px;
    height: 44px;
    background-color: rgba(255, 255, 255, 0.1);
    color: #ffffff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.info-icon svg {
    width: 20px;
    height: 20px;
}

.info-text {
    display: flex;
    flex-direction: column;
}

.info-text strong {
    font-family: 'Prompt', sans-serif;
    font-size: 0.95rem;
    font-weight: 600;
    margin-bottom: 4px;
    opacity: 0.95;
}

.info-text span, .info-text a {
    font-size: 0.95rem;
    opacity: 0.85;
    line-height: 1.5;
}

.info-text .sub-email {
    font-size: 0.85rem;
    margin-top: 2px;
}

.link-social:hover {
    color: var(--color-accent);
    opacity: 1;
}

/* Form Panel */
.contact-form-panel {
    background-color: var(--color-bg-card);
    border: 1px solid var(--color-border);
    padding: 48px;
    border-radius: var(--border-radius-md);
    box-shadow: var(--shadow-sm);
    position: relative;
    overflow: hidden;
}

.contact-form-panel h3 {
    font-size: 1.5rem;
    margin-bottom: 24px;
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
    transition: opacity var(--transition-fast);
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.form-group-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.form-group label {
    font-family: 'Prompt', sans-serif;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--color-text-secondary);
}

.form-group input, 
.form-group select, 
.form-group textarea {
    font-family: 'Sarabun', sans-serif;
    font-size: 0.95rem;
    padding: 12px 16px;
    border: 1.5px solid var(--color-border);
    background-color: var(--color-bg-primary);
    border-radius: var(--border-radius-sm);
    color: var(--color-text-primary);
    outline: none;
    transition: var(--transition-fast);
    width: 100%;
}

.form-group input:focus, 
.form-group select:focus, 
.form-group textarea:focus {
    border-color: var(--color-primary);
    background-color: #ffffff;
    box-shadow: var(--shadow-focus);
}

.form-group select {
    appearance: none;
    -webkit-appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24' stroke='%234a5c51' stroke-width='2'%3E%3Cpath stroke-linecap='round' stroke-linejoin='round' d='M19 9l-7 7-7-7'%3E%3C/path%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 16px center;
    background-size: 16px;
    padding-right: 40px;
}

.send-icon {
    width: 16px;
    height: 16px;
}

/* Form Confirmation View (Shown on submit) */
.form-confirmation {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: var(--color-bg-card);
    padding: 48px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    z-index: 5;
    opacity: 0;
    pointer-events: none;
    transform: translateY(20px);
    transition: var(--transition-normal);
}

.form-confirmation.active {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0);
}

.confirmation-icon {
    width: 72px;
    height: 72px;
    background-color: var(--color-primary-light);
    color: var(--color-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 24px;
}

.confirmation-icon svg {
    width: 36px;
    height: 36px;
}

.form-confirmation h4 {
    font-size: 1.4rem;
    margin-bottom: 12px;
}

.form-confirmation p {
    color: var(--color-text-secondary);
    font-size: 0.95rem;
    margin-bottom: 28px;
    max-width: 400px;
}

/* ==========================================================================
   FOOTER
   ========================================================================== */
.main-footer {
    background-color: var(--color-bg-secondary);
    border-top: 1px solid var(--color-border);
    padding-top: 64px;
}

.footer-container {
    display: grid;
    grid-template-columns: 1.2fr 0.9fr 0.9fr;
    gap: 48px;
    padding-bottom: 48px;
    border-bottom: 1px solid var(--color-border);
}

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

.footer-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 16px;
    font-family: 'Prompt', sans-serif;
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--color-primary);
}

.footer-logo-icon {
    width: 28px;
    height: 28px;
}

.footer-brand p {
    font-size: 0.9rem;
    color: var(--color-text-secondary);
    max-width: 320px;
}

.footer-links h4 {
    font-size: 1rem;
    margin-bottom: 20px;
    color: var(--color-text-primary);
}

.footer-links ul {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer-links a {
    font-size: 0.9rem;
    color: var(--color-text-secondary);
}

.footer-links a:hover {
    color: var(--color-primary);
    padding-left: 4px;
}

.footer-bottom {
    padding: 24px 0;
    background-color: var(--color-bg-primary);
}

.bottom-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.8rem;
    color: var(--color-text-muted);
}

.designer-credit {
    font-weight: 500;
}

/* ==========================================================================
   MODAL WINDOWS (Curriculum Details)
   ========================================================================== */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: 2000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--transition-normal);
}

.modal.active {
    opacity: 1;
    pointer-events: auto;
}

.modal-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(28, 38, 32, 0.4);
    backdrop-filter: blur(4px);
}

.modal-wrapper {
    position: relative;
    background-color: var(--color-bg-card);
    width: 90%;
    max-width: 680px;
    max-height: 85vh;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-lg);
    padding: 40px;
    z-index: 10;
    display: flex;
    flex-direction: column;
    transform: scale(0.9);
    transition: transform var(--transition-normal);
    overflow-y: auto;
}

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

.modal-close {
    position: absolute;
    top: 24px;
    right: 24px;
    font-size: 2rem;
    background: transparent;
    border: none;
    cursor: pointer;
    color: var(--color-text-muted);
    line-height: 1;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: var(--transition-fast);
}

.modal-close:hover {
    background-color: var(--color-bg-secondary);
    color: var(--color-text-primary);
}

.modal-header {
    margin-bottom: 28px;
    border-bottom: 1px solid var(--color-border);
    padding-bottom: 20px;
}

.modal-badge {
    display: inline-block;
    font-family: 'Prompt', sans-serif;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--color-primary);
    background-color: var(--color-primary-light);
    padding: 4px 12px;
    border-radius: 50px;
    margin-bottom: 8px;
}

.modal-title {
    font-size: 1.6rem;
    margin-bottom: 4px;
}

.modal-subtitle {
    font-family: 'Prompt', sans-serif;
    font-size: 0.95rem;
    color: var(--color-accent);
}

.modal-body {
    display: flex;
    flex-direction: column;
    gap: 28px;
}

.modal-section h4 {
    font-size: 1.1rem;
    margin-bottom: 16px;
    color: var(--color-text-primary);
    border-left: 3px solid var(--color-accent);
    padding-left: 10px;
}

.subject-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.subject-list li {
    display: flex;
    flex-direction: column;
    background-color: var(--color-bg-secondary);
    padding: 14px 20px;
    border-radius: var(--border-radius-sm);
    border: 1px solid var(--color-border);
}

.subject-list li strong {
    font-family: 'Prompt', sans-serif;
    font-size: 0.95rem;
    color: var(--color-text-primary);
    margin-bottom: 2px;
}

.subject-list li span {
    font-size: 0.85rem;
    color: var(--color-text-secondary);
    line-height: 1.5;
}

.career-desc {
    font-size: 0.9rem;
    color: var(--color-text-secondary);
    margin-bottom: 16px;
}

.career-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.career-tag {
    font-family: 'Prompt', sans-serif;
    font-size: 0.8rem;
    font-weight: 500;
    background-color: var(--color-primary-light);
    color: var(--color-primary);
    padding: 6px 14px;
    border-radius: 50px;
}

/* ==========================================================================
   RESPONSIVE DESIGN (MEDIA QUERIES)
   ========================================================================== */
@media (max-width: 1024px) {
    :root {
        --max-width: 960px;
    }
    
    .hero-title {
        font-size: 2.8rem;
    }
    
    .about-grid {
        gap: 40px;
    }
    
    .curriculum-grid, 
    .resp-grid, 
    .activities-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 24px;
    }
    
    /* Make the last card span full width to look balanced */
    .curriculum-grid > *:last-child, 
    .resp-grid > *:last-child,
    .activities-grid > *:last-child {
        grid-column: span 2;
    }
}

@media (max-width: 768px) {
    .menu-toggle {
        display: flex;
    }
    
    .nav-menu {
        position: absolute;
        top: var(--header-height);
        left: 0;
        right: 0;
        background-color: var(--color-bg-card);
        flex-direction: column;
        align-items: center;
        padding: 24px 0;
        gap: 16px;
        box-shadow: var(--shadow-md);
        border-top: 1px solid var(--color-border);
        border-bottom: 1px solid var(--color-border);
        opacity: 0;
        pointer-events: none;
        transform: translateY(-10px);
        transition: var(--transition-normal);
    }
    
    .nav-menu.active {
        opacity: 1;
        pointer-events: auto;
        transform: translateY(0);
    }
    
    /* Mobile header height transition fix */
    .main-header.scrolled .nav-menu {
        top: 70px;
    }
    
    /* Responsive Burger Menu Active State */
    .menu-toggle.active .bar:nth-child(1) {
        transform: translateY(9px) rotate(45deg);
    }
    
    .menu-toggle.active .bar:nth-child(2) {
        opacity: 0;
    }
    
    .menu-toggle.active .bar:nth-child(3) {
        transform: translateY(-9px) rotate(-45deg);
    }

    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 48px;
    }
    
    .hero-content {
        align-items: center;
    }
    
    .hero-title {
        font-size: 2.4rem;
    }
    
    .hero-title .highlight {
        padding-right: 0;
    }
    
    .hero-description {
        margin: 0 auto 32px;
    }
    
    .hero-actions {
        justify-content: center;
    }
    
    .hero-stats {
        justify-content: center;
        width: 100%;
    }
    
    .about-grid {
        grid-template-columns: 1fr;
        gap: 48px;
    }
    
    .contact-grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }
    
    .footer-container {
        grid-template-columns: 1fr;
        gap: 36px;
    }
    
    .bottom-container {
        flex-direction: column;
        gap: 12px;
        text-align: center;
    }
}

@media (max-width: 580px) {
    .section-title {
        font-size: 1.8rem;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-actions {
        flex-direction: column;
        width: 100%;
        gap: 12px;
    }
    
    .hero-actions .btn {
        width: 100%;
    }
    
    .hero-stats {
        flex-wrap: wrap;
        gap: 16px 24px;
    }
    
    .curriculum-grid, 
    .resp-grid, 
    .activities-grid {
        grid-template-columns: 1fr;
    }
    
    .curriculum-grid > *:last-child, 
    .resp-grid > *:last-child,
    .activities-grid > *:last-child {
        grid-column: span 1;
    }
    
    .form-group-row {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .contact-info-panel, 
    .contact-form-panel {
        padding: 32px 24px;
    }
    
    .modal-wrapper {
        padding: 32px 20px;
        width: 95%;
    }
}