/* =========================================
   1. VARIABLES & GLOBAL RESETS
   ========================================= */
:root {
    --primary: #00509d;       
    --primary-dark: #00296b;
    --secondary: #001524;     
    --accent: #00b4d8;        
    --text-body: #475569;
    --white: #ffffff;
    
    --glass: rgba(255, 255, 255, 0.85);
    --shadow-sm: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
    font-family: 'Inter', sans-serif;
    color: var(--text-body);
    background-color: #f8fafc;
    overflow-x: hidden;
    line-height: 1.6;
}

h1, h2, h3, h4 {
    font-family: 'Poppins', sans-serif;
    color: var(--secondary);
    line-height: 1.2;
}

a { text-decoration: none; color: inherit; transition: var(--transition); }
ul { list-style: none; }
img { display: block; max-width: 100%; }

/* =========================================
   2. HEADER & NAV
   ========================================= */
header {
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    padding: 1rem 0;
    transition: var(--transition);
    
    background: rgba(255, 255, 255, 0); 
    backdrop-filter: blur(2px);
    -webkit-backdrop-filter: blur(12px); 
    border-bottom: 1px solid rgba(255, 255, 255, 0);
}

header.scrolled {
    background: var(--white);
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
    border-bottom: none; 
    padding: 0.8rem 0;
    box-shadow: var(--shadow-sm);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

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

.logo img { height: 45px; width: auto; }

nav ul { display: flex; gap: 2.5rem; align-items: center; }
nav a {
    font-weight: 500;
    font-size: 0.95rem;
    color: var(--white); 
    opacity: 0.9;
    position: relative;
    padding: 5px 0;
}

nav a::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: -2px;
    left: 0;
    background: #00b4d8;
    transition: var(--transition);
}

nav a:hover::after, nav a.active::after { width: 100%; }
nav a:hover, nav a.active { opacity: 1; color: #00b4d8; }

header.scrolled nav a { color: var(--secondary); }
header.scrolled nav a:hover, header.scrolled nav a.active { color: var(--primary-dark); }

.menu-toggle { display: none; font-size: 1.5rem; cursor: pointer; color: var(--white); }
header.scrolled .menu-toggle { color: var(--secondary); }

/* --- DROPDOWN MENU STYLES --- */
.dropdown {
    position: relative;
    display: flex;
    align-items: center;
}

.dropdown-content {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    background-color: var(--white);
    min-width: 240px;
    box-shadow: var(--shadow-lg);
    border-radius: 8px;
    padding: 0.5rem 0;
    flex-direction: column;
    gap: 0; 
    z-index: 1001;
}

.dropdown:hover .dropdown-content {
    display: flex;
}

.dropdown-content li {
    width: 100%;
}

.dropdown-content a {
    color: var(--secondary) !important; 
    padding: 12px 20px;
    display: block;
    font-size: 0.9rem;
    opacity: 1;
}

.dropdown-content a::after {
    display: none; 
}

.dropdown-content a:hover {
    background-color: #f8fafc;
    color: var(--primary) !important;
}

/* =========================================
   3. PAGE HERO
   ========================================= */
.page-header {
    background: linear-gradient(135deg, rgba(0, 21, 36, 0.5) 0%, rgba(0, 0, 0, 0.4) 50%),
                url('lagunalake.jpeg') center/cover;
    height: 50vh;
    min-height: 400px;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    position: relative;
    color: var(--white);
}

.page-header h1 {
    font-size: 3.5rem;
    margin-bottom: 0.5rem;
    letter-spacing: -1px;
    color: var(--white);
    text-shadow: 2px 2px 10px rgba(0, 0, 0, 0.3);
}

.page-header h1 span { color: var(--accent); }

.breadcrumb {
    color: var(--accent);
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 3px;
    font-weight: 700;
    margin-bottom: 1rem;
    display: inline-block;
    padding: 4px 12px;
    background: rgba(255,255,255,0.1);
    border-radius: 20px;
    backdrop-filter: blur(5px);
}

/* =========================================
   4. CHARTER SECTION
   ========================================= */
.charter-section { padding: 6rem 0; background: var(--white); border-bottom: 1px solid #e2e8f0; }
.charter-wrapper { display: flex; gap: 4rem; align-items: center; }
.charter-info { flex: 1; }

.tag {
    background: rgba(0, 180, 216, 0.1);
    color: var(--accent);
    padding: 6px 14px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
    display: inline-block;
    margin-bottom: 1rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.charter-info h2 { font-size: 2.5rem; color: var(--secondary); margin-bottom: 1.5rem; }
.charter-info p { color: var(--text-body); margin-bottom: 2rem; font-size: 1.05rem; text-align: justify; }

.charter-actions { display: flex; align-items: center; gap: 1.5rem; flex-wrap: wrap; }
.meta-info { color: #64748b; font-size: 0.95rem; display: flex; align-items: center; gap: 8px; font-weight: 500; }

.btn-download {
    background: var(--primary); color: var(--white);
    padding: 12px 25px; border-radius: 8px; font-weight: 600;
    display: inline-flex; align-items: center; gap: 10px; transition: var(--transition);
}
.btn-download:hover { background: var(--primary-dark); transform: translateY(-2px); box-shadow: var(--shadow-md); }

.pdf-viewer-card { flex: 1.2; background: var(--secondary); border-radius: 12px; overflow: hidden; box-shadow: var(--shadow-lg); height: 500px; display: flex; flex-direction: column; }

.pdf-header {
    background: #1e293b;
    padding: 0 15px;
    display: flex;
    align-items: center;
    gap: 8px;
    height: 40px;
    flex-shrink: 0;
}
.dot { width: 12px; height: 12px; border-radius: 50%; }
.dot.red { background: #ff5f56; }
.dot.yellow { background: #ffbd2e; }
.dot.green { background: #27c93f; }
.browser-title { color: #94a3b8; font-size: 0.85rem; margin-left: 10px; font-family: monospace; }

.pdf-viewer-card iframe { width: 100%; flex-grow: 1; border: none; background: #fff; }

/* =========================================
   5. RESOURCES GRID
   ========================================= */
.resources-section { padding: 6rem 0; background: #f8fafc; }

.section-title { text-align: center; margin-bottom: 3rem; }
.section-title h3 { font-size: 2rem; color: var(--secondary); margin-bottom: 10px; }
.section-title .line { width: 60px; height: 4px; background: var(--accent); margin: 0 auto; border-radius: 2px; }

.resources-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 2rem; }
.resource-card {
    background: var(--white); border-radius: 12px; overflow: hidden;
    box-shadow: var(--shadow-sm); border: 1px solid rgba(0,0,0,0.05);
    transition: var(--transition); cursor: pointer;
    display: flex; flex-direction: column;
}
.resource-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-lg); border-color: rgba(0, 180, 216, 0.2); }

.card-thumb { position: relative; height: 220px; overflow: hidden; }
.source-img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s ease; }
.resource-card:hover .source-img { transform: scale(1.08); }

.overlay {
    position: absolute; inset: 0; background: rgba(0, 41, 107, 0.6);
    display: flex; align-items: center; justify-content: center;
    opacity: 0; transition: var(--transition); color: var(--white); font-size: 2rem;
}
.resource-card:hover .overlay { opacity: 1; }

.card-body { padding: 1.5rem; display: flex; flex-direction: column; flex-grow: 1; }
.card-body h4 { margin-bottom: 0.5rem; color: var(--primary); font-size: 1.25rem; }
.card-body p { color: var(--text-body); margin-bottom: 1.5rem; font-size: 0.95rem; flex-grow: 1; }
.link-text { color: var(--accent); font-weight: 600; display: inline-flex; align-items: center; gap: 6px; transition: var(--transition); }
.resource-card:hover .link-text { gap: 10px; }

/* =========================================
   6. FOOTER & MODAL
   ========================================= */
footer { background: var(--secondary); color: var(--white); padding: 5rem 0 2rem; }
.footer-content {
    max-width: 1200px; margin: 0 auto; padding: 0 2rem;
    display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 3rem; margin-bottom: 4rem;
}
.footer-col h4 { color: var(--white); margin-bottom: 1.5rem; font-size: 1.2rem; position: relative; padding-left: 15px; }
.footer-col h4::before { content: ''; position: absolute; left: 0; top: 5px; height: 18px; width: 4px; background: var(--accent); border-radius: 2px; }
.footer-col a, .footer-col p { color: #94a3b8; display: block; margin-bottom: 0.8rem; font-size: 0.95rem; }
.footer-col a:hover { color: var(--accent); transform: translateX(5px); }
.socials { display: flex; gap: 12px; margin-top: 1.5rem; }
.socials a {
    width: 36px; height: 36px; background: rgba(255,255,255,0.05);
    display: flex; align-items: center; justify-content: center;
    border-radius: 50%; color: var(--white); border: 1px solid rgba(255,255,255,0.1);
}
.socials a:hover { background: var(--accent); color: var(--secondary); transform: translateY(-3px); }
.copyright { text-align: center; padding-top: 2rem; border-top: 1px solid rgba(255,255,255,0.05); color: #64748b; font-size: 0.85rem; }

/* --- Modal Styles --- */
.modal { display: none; position: fixed; z-index: 2000; left: 0; top: 0; width: 100%; height: 100%; background: rgba(0, 4, 40, 0.95); backdrop-filter: blur(5px); }
.modal-content { margin: auto; display: block; width: 80%; max-width: 900px; animation: zoom 0.4s; position: relative; top: 50%; transform: translateY(-50%); }
.close { position: absolute; top: 20px; right: 35px; color: #f1f1f1; font-size: 40px; font-weight: bold; transition: 0.3s; cursor: pointer; z-index: 2001; }
.close:hover, .close:focus { color: #bbb; text-decoration: none; cursor: pointer; }
@keyframes zoom { from {transform: translateY(-50%) scale(0.9)} to {transform: translateY(-50%) scale(1)} }

/* =========================================
   7. MEDIA QUERIES (RESPONSIVE LAYOUT)
   ========================================= */
@media (max-width: 992px) {
    .charter-wrapper { flex-direction: column; }
    .pdf-viewer-card { width: 100%; height: 600px; }
}

@media (max-width: 768px) {
    .menu-toggle { display: block; }
    
    /* Target only the main nav-links list to prevent hiding the dropdown */
    nav > ul.nav-links {
        display: flex;
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background: var(--white);
        flex-direction: column;
        align-items: stretch; 
        padding: 0;
        gap: 0;
        box-shadow: var(--shadow-md);
        border-top: 1px solid #eee;
        
        clip-path: polygon(0 0, 100% 0, 100% 0, 0 0);
        visibility: hidden;
        transition: clip-path 0.3s ease-in-out, visibility 0.3s;
    }

    nav li { width: 100%; }

    /* Target only the main nav-links list when active */
    nav > ul.nav-links.active { 
        clip-path: polygon(0 0, 100% 0, 100% 100%, 0 100%);
        visibility: visible; 
    }
    
    nav a { 
        color: var(--secondary); 
        padding: 1rem 2rem; 
        display: block; 
        width: 100%; 
        text-align: center; 
    }
    
    nav a:hover { background: #f1f5f9; color: var(--primary-dark); }
    nav a::after { display: none; }
    
    nav a.active {
        color: var(--primary);
        background: rgba(0, 80, 157, 0.05);
        font-weight: 700;
        border-left: 4px solid var(--primary);
    }
    
    /* --------------------------------------
       Mobile Flatten Menu Fixes 
       -------------------------------------- */
    /* 1. Hide the "Overview" button on mobile */
    .dropdown > a.dropbtn {
        display: none; 
    }
    
    /* 2. Remove flex row formatting from the li container */
    .dropdown {
        width: 100%;
        display: block; 
    }
    
    /* 3. Extract the dropdown content so it flows normally */
    .dropdown-content {
        display: flex;
        flex-direction: column;
        position: static; /* removes absolute positioning */
        box-shadow: none;
        background-color: transparent; /* Match the main mobile background */
        width: 100%;
        border-radius: 0;
        padding: 0;
        visibility: visible;
        clip-path: none;
    }
    
    /* 4. Match the styling of the new links to the rest of the mobile menu */
    .dropdown-content a {
        padding: 1rem 2rem; 
        font-size: 0.95rem;
        text-align: center;
    }
    
    .page-header h1 { font-size: 2.2rem; }
    
    .charter-info h2 { font-size: 2rem; }
    .charter-actions { flex-direction: column; align-items: flex-start; }
    .pdf-viewer-card { height: 450px; }
}