/* ==========================================================================
   1. DESIGN SYSTEM VARIABLES (Red, Green, and Blue Scheme)
   ========================================================================== */
:root {
    --primary-green: #2e7d32;       /* Anchor color for academic elements */
    --primary-green-dark: #1b5e20;  /* Main color for footer & header titles */
    --accent-red: #c62828;          /* Action color for alerts and emphasis decoration */
    --school-blue: #1565c0;         /* Highlight color for secondary nav and links */
    --light-bg: #fcfdfc;
    --card-tint: #f1f8e9;           /* Very light greenish hue for clean grids */
    --text-dark: #222222;
    --text-muted: #555555;
    
    /* Cross-browser standard cubic timing string */
    --transition-smooth: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    --shadow-soft: 0 4px 12px rgba(0, 0, 0, 0.03);
    --shadow-medium: 0 8px 24px rgba(0, 0, 0, 0.08);
}

/* ==========================================================================
   2. GLOBAL RESET & CROSS-BROWSER BASE STYLES
   ========================================================================== */
* {
    margin: 0;
    padding: 0;
    -webkit-box-sizing: border-box;
    -moz-box-sizing: border-box;
    box-sizing: border-box;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

html {
    scroll-behavior: smooth;
    /* REMOVE: height: 100%; */
}

body {
    background-color: var(--light-bg);
    color: var(--text-dark);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
    
    /* THE STICKY FOOTER ENGINE ENGINE */
    display: flex;
    flex-direction: column;
    min-height: 100vh; /* CHANGE: From 100% to 100vh */
}

/* ==========================================================================
   3. RESPONSIVE DROPDOWN NAVIGATION ENGINE (Desktop & Mobile Matrix)
   ========================================================================== */
header {
    background-color: #ffffff;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 4%;
    box-shadow: var(--shadow-soft);
    position: -webkit-sticky;
    position: sticky;
    top: 0;
    width: 100%; /* ADD: Ensures the header spans the full flex container */
    z-index: 2000;
}

.logo {
    font-size: 1.4rem;
    font-weight: bold;
    color: var(--primary-green);
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-align: center;
    -ms-flex-align: center;
    align-items: center;
    gap: 8px;
    white-space: nowrap;
}

.logo i { color: var(--accent-red); }

/* Navigation Container Foundation */
.nav-menu ul {
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    list-style: none;
    -webkit-box-align: center;
    -ms-flex-align: center;
    align-items: center;
}

.nav-menu ul li {
    position: relative; /* Context positioning anchor for child dropdown drawers */
}

.nav-menu ul li a {
    text-decoration: none;
    color: var(--text-muted);
    font-weight: 600;
    font-size: 0.92rem;
    padding: 10px 12px;
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-align: center;
    -ms-flex-align: center;
    align-items: center;
    gap: 5px;
    -webkit-transition: var(--transition-smooth);
    -moz-transition: var(--transition-smooth);
    transition: var(--transition-smooth);
}

.nav-menu ul li a:hover {
    color: var(--school-blue);
}

.nav-arrow {
    font-size: 0.7rem;
    -webkit-transition: -webkit-transform 0.3s ease;
    transition: transform 0.3s ease;
}

/* Dropdown Menu Overlay Card Layout */
.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    background-color: #ffffff;
    min-width: 240px;
    box-shadow: 0 8px 30px rgba(0,0,0,0.12);
    border-radius: 6px;
    border-top: 3px solid var(--school-blue); /* Distinct color anchor indicator */
    display: block !important; /* Overriding base block to allow transition control */
    opacity: 0;
    visibility: hidden;
    -webkit-transform: translateY(15px);
    -ms-transform: translateY(15px);
    transform: translateY(15px);
    -webkit-transition: opacity 0.3s ease, -webkit-transform 0.3s ease, visibility 0.3s ease;
    transition: opacity 0.3s ease, transform 0.3s ease, visibility 0.3s ease;
    pointer-events: none; /* Stops phantom link interactions while hidden */
}

.dropdown-menu ul {
    display: block; /* Stacks links vertically */
    padding: 8px 0;
}

.dropdown-menu li a {
    padding: 10px 20px;
    font-size: 0.88rem;
    font-weight: 500;
    border-bottom: 1px solid rgba(0,0,0,0.03);
}

.dropdown-menu li:last-child a { border-bottom: none; }

.dropdown-menu li a:hover {
    background-color: var(--card-tint);
    color: var(--primary-green);
    padding-left: 24px; /* Subtle item indentation slider click visual */
}

/* Desktop Activation States via Hover Matrix */
@media (min-width: 1151px) {
    .nav-menu li.has-dropdown:hover .dropdown-menu {
        opacity: 1;
        visibility: visible;
        -webkit-transform: translateY(0);
        -ms-transform: translateY(0);
        transform: translateY(0);
        pointer-events: auto;
    }
    .nav-menu li.has-dropdown:hover .nav-arrow {
        -webkit-transform: rotate(180deg);
        -ms-transform: rotate(180deg);
        transform: rotate(180deg);
    }
}

/* Mobile Toggle Hamburger Utility */
.mobile-nav-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--primary-green-dark);
    font-size: 1.5rem;
    cursor: pointer;
    -webkit-transition: var(--transition-smooth);
    transition: var(--transition-smooth);
}

/* ==========================================================================
   4. CAROUSEL IMAGES SLIDER (Perfect Lower-Third Caption Pinning)
   ========================================================================== */
.slider-container {
    position: relative;
    width: 100%;
    height: 75vh; /* Standard desktop profile */
    overflow: hidden;
    background-color: #000000;
}

.slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-size: cover;
    background-position: center;
    opacity: 0;
    visibility: hidden;
    -webkit-transition: opacity 0.8s ease-in-out, visibility 0.8s ease-in-out;
    -moz-transition: opacity 0.8s ease-in-out, visibility 0.8s ease-in-out;
    transition: opacity 0.8s ease-in-out, visibility 0.8s ease-in-out;
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-pack: center;
    -ms-flex-pack: center;
    justify-content: center;
    -webkit-box-align: flex-end;
    -ms-flex-align: flex-end;
    align-items: flex-end; /* Locks structural content flow baseline to bottom container edge */
    z-index: 1;
}

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

/* The Adaptive Caption Mask Box */
.caption-container {
    background: rgba(0, 0, 0, 0.82);
    padding: 25px 40px;
    border-radius: 8px;
    text-align: center;
    width: 90%;
    max-width: 750px; /* Looks beautiful on wide desktops and laptops */
    border-left: 6px solid var(--accent-red);
    color: #ffffff;
    box-shadow: 0 12px 35px rgba(0,0,0,0.5);
    margin-bottom: 45px; /* Creates clean framing whitespace away from image edge across devices */
    -webkit-backdrop-filter: blur(4px);
    backdrop-filter: blur(4px);
}

.caption-container h2 {
    font-size: 2rem;
    margin-bottom: 15px;
    font-weight: 600;
    line-height: 1.3;
    text-shadow: 0 2px 4px rgba(0,0,0,0.3);
}

.arrow {
    position: absolute;
    top: 50%;
    -webkit-transform: translateY(-50%);
    -ms-transform: translateY(-50%);
    transform: translateY(-50%);
    background: rgba(46, 125, 50, 0.85);
    color: #ffffff;
    border: none;
    padding: 12px 18px;
    font-size: 1.2rem;
    cursor: pointer;
    border-radius: 50%;
    z-index: 10;
    -webkit-transition: var(--transition-smooth);
    -moz-transition: var(--transition-smooth);
    transition: var(--transition-smooth);
}

.arrow:hover { 
    background: var(--accent-red); 
    -webkit-transform: translateY(-50%) scale(1.1);
    -ms-transform: translateY(-50%) scale(1.1);
    transform: translateY(-50%) scale(1.1);
}

.prev { left: 15px; }
.next { right: 15px; }

.btn {
    background-color: var(--primary-green);
    color: #ffffff;
    padding: 10px 28px;
    text-decoration: none;
    font-weight: bold;
    border-radius: 25px;
    display: inline-block;
    -webkit-transition: var(--transition-smooth);
    -moz-transition: var(--transition-smooth);
    transition: var(--transition-smooth);
    box-shadow: 0 4px 10px rgba(46, 125, 50, 0.3);
}

.btn:hover { 
    background-color: var(--school-blue); 
    -webkit-transform: translateY(-2px);
    -ms-transform: translateY(-2px);
    transform: translateY(-2px);
    box-shadow: 0 6px 14px rgba(21, 101, 192, 0.4);
}




/* ==========================================================================
   4.5. WELCOME MESSAGE BLOCK (Polished Content Framing)
   ========================================================================== */
.welcome-section {
    padding: 90px 20px 40px 20px;
    text-align: center;
    background-color: #ffffff;
}

.welcome-content {
    max-width: 850px;
    margin: 0 auto;
}

.welcome-tagline {
    display: inline-block;
    color: var(--school-blue);
    font-size: 1.1rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-bottom: 15px;
}

.welcome-content h2 {
    font-size: 2.4rem;
    color: var(--primary-green-dark);
    line-height: 1.3;
    margin-bottom: 25px;
    font-weight: 700;
}

/* Elegant Triple-Color Horizontal Divider Asset */
.color-divider {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 4px;
    margin-bottom: 30px;
}

.color-divider span {
    height: 4px;
    border-radius: 2px;
    display: inline-block;
}

.line-red   { width: 40px; background-color: var(--accent-red); }
.line-green { width: 60px; background-color: var(--primary-green); }
.line-blue  { width: 40px; background-color: var(--school-blue); }

.welcome-content p {
    font-size: 1.15rem;
    color: var(--text-muted);
    line-height: 1.8;
    font-weight: 400;
}

/* Responsive adjustment layer for tablets and mobile viewports */
@media (max-width: 768px) {
    .welcome-section {
        padding: 60px 15px 20px 15px;
    }
    .welcome-content h2 {
        font-size: 1.8rem;
    }
    .welcome-content p {
        font-size: 1rem;
        line-height: 1.6;
    }
}


/* ==========================================================================
   5. ACADEMIC PROGRAMS GRID (Fully Responsive & Colorized)
   ========================================================================== */
.programs-section {
    padding: 80px 20px;
    text-align: center;
    background-color: #f4f6f4;
}

.programs-section h2 {
    font-size: 2.2rem;
    color: var(--primary-green-dark);
    margin-bottom: 12px;
}

.programs-container {
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-pack: center;
    -ms-flex-pack: center;
    justify-content: center;
    gap: 25px;
    -ms-flex-wrap: wrap;
    flex-wrap: wrap;
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px 0;
}

.program-card {
    background: #ffffff;
    border-radius: 12px;
    padding: 40px 25px;
    width: 100%;
    max-width: 265px; 
    text-align: center;
    box-shadow: var(--shadow-soft);
    position: relative;
    overflow: hidden;
    will-change: transform; 
    -webkit-transition: -webkit-transform 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275), box-shadow 0.4s ease;
    -moz-transition: -moz-transform 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275), box-shadow 0.4s ease;
    transition: transform 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275), box-shadow 0.4s ease;
}

.prog-icon {
    font-size: 2.5rem;
    margin-bottom: 20px;
    display: inline-block;
    -webkit-transition: -webkit-transform 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    -moz-transition: -moz-transform 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    transition: transform 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.program-card h3 {
    font-size: 1.4rem;
    margin-bottom: 15px;
}

.program-card p {
    font-size: 0.95rem;
    color: var(--text-muted);
    line-height: 1.5;
}

/* Dedicated School Color Theme Assignments */
.program-card.program-red { border-bottom: 5px solid var(--accent-red); }
.program-card.program-red .prog-icon, .program-card.program-red h3 { color: var(--accent-red); }

.program-card.program-green { border-bottom: 5px solid var(--primary-green); }
.program-card.program-green .prog-icon, .program-card.program-green h3 { color: var(--primary-green); }

.program-card.program-blue { border-bottom: 5px solid var(--school-blue); }
.program-card.program-blue .prog-icon, .program-card.program-blue h3 { color: var(--school-blue); }

.program-card:hover {
    -webkit-transform: translateY(-10px) scale(1.02);
    -ms-transform: translateY(-10px) scale(1.02);
    transform: translateY(-10px) scale(1.02);
    box-shadow: var(--shadow-medium);
}

.program-card:hover .prog-icon {
    -webkit-transform: scale(1.2) rotate(-5deg);
    -ms-transform: scale(1.2) rotate(-5deg);
    transform: scale(1.2) rotate(-5deg);
}

/* ==========================================================================
   6. RESPONSIVE SCHOOL STATISTICS GRID
   ========================================================================== */
.stats-section {
    padding: 80px 20px;
    text-align: center;
    background-color: #ffffff;
}

.stats-section h2 { 
    font-size: 2.2rem; 
    color: var(--primary-green-dark); 
    margin-bottom: 12px; 
}

.subtitle { 
    color: var(--text-muted); 
    margin-bottom: 40px; 
    font-size: 1.05rem;
}

.stats-container { 
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-pack: center;
    -ms-flex-pack: center;
    justify-content: center;
    gap: 25px;
    -ms-flex-wrap: wrap;
    flex-wrap: wrap;
    max-width: 1200px;
    margin: 0 auto;
}

.stat-card { 
    background: var(--card-tint); 
    border-radius: 12px; 
    padding: 40px 20px; 
    width: 100%;
    max-width: 250px; 
    text-align: center; 
    box-shadow: var(--shadow-soft);
    will-change: transform;
    -webkit-transition: -webkit-transform 0.3s ease, box-shadow 0.3s ease;
    -moz-transition: -moz-transform 0.3s ease, box-shadow 0.3s ease;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.stat-card:hover { 
    -webkit-transform: translateY(-5px);
    -ms-transform: translateY(-5px);
    transform: translateY(-5px);
    box-shadow: var(--shadow-medium);
}

.stats-container .stat-card:nth-child(1) { border-top: 5px solid var(--accent-red); }
.stats-container .stat-card:nth-child(2) { border-top: 5px solid var(--primary-green); }
.stats-container .stat-card:nth-child(3) { border-top: 5px solid var(--school-blue); }
.stats-container .stat-card:nth-child(4) { border-top: 5px solid var(--accent-red); }

.stats-container .stat-card:nth-child(odd) .icon-box { color: var(--accent-red); }
.stats-container .stat-card:nth-child(even) .icon-box { color: var(--school-blue); }

.icon-box { font-size: 2.4rem; margin-bottom: 15px; }
.stat-card h3 { font-size: 2.8rem; display: inline-block; color: var(--primary-green); font-weight: 700; }
.suffix { font-size: 1.6rem; font-weight: bold; color: var(--primary-green); }
.stat-card p { color: var(--text-muted); font-weight: 500; margin-top: 8px; }

/* ==========================================================================
   7. FOOTER BLOCK STYLING
   ========================================================================== */
footer { 
    background-color: var(--primary-green-dark); 
    color: #ffffff; 
    text-align: center; 
    padding: 25px; 
    border-top: 4px solid var(--school-blue); 
    font-size: 0.95rem;
    margin-top: auto; /* Absolute fallback to anchor it down safely */
}

/* ==========================================================================
   8. COMPREHENSIVE RESPONSIVE DESIGN MEDIA OVERLAY (Laptop & Small Screen Mix)
   ========================================================================== */

/* Triggers layout adaptation when width cannot display 9 multi-level links side-by-side */
@media (max-width: 1150px) {
    .mobile-nav-toggle {
        display: block;
    }

    .nav-menu {
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background-color: #ffffff;
        box-shadow: 0 10px 20px rgba(0,0,0,0.05);
        max-height: 0;
        overflow-y: auto;
        visibility: hidden;
        -webkit-transition: max-height 0.5s cubic-bezier(0.25, 0.46, 0.45, 0.94), visibility 0.5s ease;
        transition: max-height 0.5s cubic-bezier(0.25, 0.46, 0.45, 0.94), visibility 0.5s ease;
    }

    /* Active state when javascript appends .open selector string */
    .nav-menu.open {
        max-height: 80vh;
        visibility: visible;
    }

    .nav-menu ul {
        display: block;
        padding: 15px 0;
    }

    .nav-menu ul li {
        width: 100%;
    }

    .nav-menu ul li a {
        padding: 12px 6%;
        font-size: 1rem;
        justify-content: space-between; /* Pushes dropdown icon arrows to explicit right edge */
        border-bottom: 1px solid rgba(0,0,0,0.04);
    }

    /* Mobile Accordion Drawer States */
    .dropdown-menu {
        position: static; /* Removes desktop hover floats layout engine anchors */
        width: 100%;
        box-shadow: none;
        border-radius: 0;
        border-top: none;
        border-left: 4px solid var(--school-blue);
        background-color: #fafbfa;
        max-height: 0;
        overflow: hidden;
        opacity: 1;
        visibility: visible;
        -webkit-transform: none;
        -ms-transform: none;
        transform: none;
        padding: 0;
        -webkit-transition: max-height 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
        transition: max-height 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    }

    .dropdown-menu.mobile-active {
        max-height: 500px; /* Expands smoothly on touch interaction triggers */
    }

    .dropdown-menu li a {
        padding: 10px 10%;
    }
}