/* ==========================================================================
   1. ROOT VARIABLES & BASE STYLES
   ========================================================================== */
:root {
    --primary: #00c389; 
    --primary-dark: #00a876;
    --dark: #0f172a;
    --dark-light: #1e293b;
    --text-main: #334155;
    --text-light: #64748b;
    --bg-body: #f8fafc;
    --white: #ffffff;
    --border: #e2e8f0;
    
    /* System & Utility Colors */
    --success: #10b981;
    --danger: #ef4444;
    --warning: #f59e0b;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.05);
    --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.05), 0 2px 4px -1px rgba(0,0,0,0.03);
    --shadow-lg: 0 20px 25px -5px rgba(0,0,0,0.05), 0 10px 10px -5px rgba(0,0,0,0.02);
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 24px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body { 
    font-family: 'Plus Jakarta Sans', sans-serif; 
    color: var(--text-main); 
    background: var(--bg-body); 
    line-height: 1.7; 
    overflow-x: hidden; 
}

/* ==========================================================================
   2. TOP BAR, HEADER & NAVIGATION
   ========================================================================== */
.top-bar {
    background: var(--dark); 
    color: #cbd5e1; 
    padding: 10px 8%; 
    display: flex; 
    justify-content: space-between; 
    align-items: center; 
    font-size: 0.85rem; 
    font-weight: 500;
}
.top-bar-left, .top-bar-right { display: flex; gap: 25px; align-items: center; }
.top-bar a { color: #cbd5e1; text-decoration: none; transition: var(--transition); display: flex; align-items: center; gap: 8px; }
.top-bar a:hover { color: var(--primary); }
.top-bar i { color: var(--primary); }

header {
    position: sticky; top: 0; width: 100%; padding: 18px 8%;
    display: flex; justify-content: space-between; align-items: center;
    background: rgba(255, 255, 255, 0.98); backdrop-filter: blur(10px);
    z-index: 1000; border-bottom: 1px solid var(--border); box-shadow: var(--shadow-sm);
}
.logo { font-size: 1.8rem; font-weight: 800; color: var(--dark); text-decoration: none; letter-spacing: -0.5px; }
.logo span { color: var(--primary); }

.nav-links { display: flex; gap: 35px; list-style: none; align-items: center; }
.nav-links a { text-decoration: none; color: var(--dark); font-weight: 600; font-size: 1rem; transition: var(--transition); }
.nav-links a:hover, .nav-links a.active { color: var(--primary); }

.btn-nav { 
    background: var(--primary); color: var(--white) !important; 
    padding: 12px 28px; border-radius: 50px; 
    box-shadow: 0 4px 15px rgba(0,195,137,0.25); 
}
.btn-nav:hover { background: var(--primary-dark); transform: translateY(-2px); }

/* --- SIDEBAR MENU (HAMBURGER) --- */
.menu-toggle { display: none; font-size: 1.8rem; color: var(--dark); cursor: pointer; transition: var(--transition); }
.menu-toggle:hover { color: var(--primary); }
.sidebar-overlay { display: none; }
.sidebar-header { display: none; }

/* ==========================================================================
   3. HERO SECTIONS
   ========================================================================== */
.hero {
    min-height: 85vh; display: flex; align-items: center; justify-content: center;
    text-align: center; padding: 80px 10%;
    background: radial-gradient(circle at top right, #e6fff7, transparent 55%), radial-gradient(circle at bottom left, #f0f9ff, transparent 55%);
}
.tagline { 
    display: inline-block; background: #e0f8f1; color: var(--primary-dark); 
    padding: 8px 22px; border-radius: 50px; font-weight: 700; 
    font-size: 0.85rem; margin-bottom: 25px; text-transform: uppercase; letter-spacing: 1px; 
}
.hero h1 { font-size: clamp(2.8rem, 6vw, 4.5rem); color: var(--dark); line-height: 1.15; margin-bottom: 25px; font-weight: 800; }
.hero h1 span { color: var(--primary); }
.hero p { font-size: 1.25rem; color: var(--text-light); max-width: 800px; margin: 0 auto 40px; }

.page-hero { padding: 100px 10% 60px; text-align: center; background: var(--white); border-bottom: 1px solid var(--border); }
.page-hero h1 { font-size: clamp(2.3rem, 5vw, 3.2rem); color: var(--dark); margin-bottom: 15px; font-weight: 800; }
.page-hero p { font-size: 1.15rem; color: var(--text-light); max-width: 650px; margin: 0 auto; }

/* ==========================================================================
   4. BUTTONS
   ========================================================================== */
.btn-group { display: flex; gap: 20px; justify-content: center; flex-wrap: wrap; }
.btn { 
    padding: 16px 40px; border-radius: 50px; font-weight: 700; font-size: 1.05rem; 
    text-decoration: none; transition: var(--transition); border: 2px solid transparent; 
    cursor: pointer; display: inline-flex; align-items: center; gap: 10px; 
}
.btn-solid { background: var(--dark); color: var(--white); box-shadow: 0 10px 20px rgba(15, 23, 42, 0.15); }
.btn-solid:hover { background: var(--primary); box-shadow: 0 10px 25px rgba(0, 195, 137, 0.3); transform: translateY(-3px); }
.btn-outline { background: transparent; border-color: var(--dark); color: var(--dark); }
.btn-outline:hover { background: var(--dark); color: var(--white); transform: translateY(-3px); }
.btn-block { display: flex; width: 100%; justify-content: center; align-items: center; padding: 16px; border-radius: 50px; font-weight: 700; text-decoration: none; transition: var(--transition); }

/* ==========================================================================
   5. HOME PAGE UI (FEATURES, ABOUT)
   ========================================================================== */
.features { padding: 80px 8%; background: var(--white); display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 40px; }
.feature-box { display: flex; gap: 20px; align-items: flex-start; }
.feature-box i { font-size: 2.2rem; color: var(--primary); background: #f0fdf4; padding: 20px; border-radius: var(--radius-md); }
.feature-text h3 { font-size: 1.35rem; color: var(--dark); margin-bottom: 8px; }
.feature-text p { color: var(--text-light); font-size: 0.95rem; }

.about-preview { padding: 100px 8%; display: flex; align-items: center; gap: 60px; flex-wrap: wrap; background: var(--bg-body); }
.about-content { flex: 1; min-width: 320px; }
.about-content h2 { font-size: 2.5rem; color: var(--dark); margin-bottom: 20px; font-weight: 800; }
.about-content p { color: var(--text-light); margin-bottom: 30px; font-size: 1.05rem; }
.check-list { list-style: none; margin-bottom: 40px; }
.check-list li { margin-bottom: 15px; font-weight: 600; color: var(--dark); display: flex; align-items: center; gap: 12px; }
.check-list li i { color: var(--primary); font-size: 1.1rem; }
.about-image { flex: 1; min-width: 320px; background: var(--dark); border-radius: var(--radius-lg); padding: 60px; text-align: center; color: white; box-shadow: 20px 20px 0 var(--primary); }

.courses { padding: 100px 8%; background: var(--white); text-align: center; }
.section-header h2 { font-size: 2.6rem; color: var(--dark); margin-bottom: 15px; font-weight: 800; }
.section-header p { color: var(--text-light); font-size: 1.15rem; margin-bottom: 60px; }

/* ==========================================================================
   6. PRICING & COURSES GRID
   ========================================================================== */
.pricing-section { padding: 80px 8%; background: var(--bg-body); }
.pricing-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); gap: 30px; }
.pricing-card { background: var(--white); border-radius: var(--radius-lg); padding: 40px; border: 1px solid var(--border); transition: var(--transition); position: relative; display: flex; flex-direction: column; }
.pricing-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-lg); border-color: var(--primary); }

.badge { position: absolute; top: -14px; left: 50%; transform: translateX(-50%); background: var(--dark); color: var(--white); padding: 6px 22px; border-radius: 50px; font-size: 0.8rem; font-weight: 700; letter-spacing: 1px; text-transform: uppercase; white-space: nowrap; }
.badge-primary { background: var(--primary); }

.pricing-card > i { font-size: 2.2rem; color: var(--primary); margin-bottom: 20px; display: inline-block; background: #f0fdf4; padding: 16px; border-radius: var(--radius-md); width: max-content; }
.pricing-card h3 { font-size: 1.5rem; color: var(--dark); margin-bottom: 8px; }
.course-duration { color: var(--text-light); font-weight: 600; font-size: 0.9rem; margin-bottom: 20px; display: inline-block; background: var(--bg-body); padding: 6px 16px; border-radius: 50px; width: max-content; }
.price { font-size: 2.6rem; font-weight: 800; color: var(--dark); margin-bottom: 5px; }
.price span { font-size: 1rem; color: var(--text-light); font-weight: 500; }

.features-list { list-style: none; margin-bottom: 35px; margin-top: 15px; flex-grow: 1; }
.features-list li { margin-bottom: 12px; font-size: 0.95rem; color: var(--text-main); display: flex; align-items: flex-start; gap: 12px; }
.features-list li i { font-size: 1.05rem; color: var(--primary); margin-top: 4px; }

/* ==========================================================================
   7. FORM DESIGN (ADMISSION & LOGIN)
   ========================================================================== */
.admission-container { padding: 60px 8% 100px; display: flex; gap: 50px; align-items: flex-start; flex-wrap: wrap; background: var(--white); }
.contact-info { flex: 1; min-width: 320px; background: var(--dark); color: var(--white); padding: 50px; border-radius: var(--radius-lg); box-shadow: 20px 20px 0 var(--primary); }
.contact-info h2 { font-size: 2.1rem; margin-bottom: 15px; }
.contact-info p { opacity: 0.75; margin-bottom: 40px; font-size: 1.05rem; }
.info-item { display: flex; align-items: center; gap: 20px; margin-bottom: 30px; }
.info-item i { font-size: 1.3rem; color: var(--primary); background: rgba(255, 255, 255, 0.05); padding: 16px; border-radius: var(--radius-md); }
.info-item h4 { font-size: 1.1rem; margin-bottom: 4px; }
.info-item span { color: #cbd5e1; font-size: 0.95rem; }

.form-wrapper { flex: 1.3; min-width: 320px; background: var(--bg-body); padding: 50px; border-radius: var(--radius-lg); border: 1px solid var(--border); }
.form-wrapper h3 { font-size: 1.75rem; color: var(--dark); margin-bottom: 30px; }
.input-group { margin-bottom: 22px; }
.input-group label { display: block; font-weight: 600; color: var(--dark); margin-bottom: 8px; font-size: 0.95rem; }
.input-group input, .input-group select, .input-group textarea { width: 100%; padding: 15px; border: 1.5px solid var(--border); border-radius: var(--radius-md); font-family: inherit; font-size: 1rem; color: var(--text-main); background: var(--white); transition: var(--transition); }
.input-group input:focus, .input-group select:focus, .input-group textarea:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 4px rgba(0,195,137,0.12); }

/* ==========================================================================
   8. PORTAL & DASHBOARD (ADMIN & STUDENT)
   ========================================================================== */
.dashboard-layout { display: flex; min-height: 100vh; background: var(--bg-body); }
.dashboard-main { flex: 1; padding: 40px; width: 100%; max-width: 1200px; margin: 0 auto; }

.stats-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 24px; margin-bottom: 40px; }
.stats-card { background: var(--white); padding: 30px; border-radius: var(--radius-md); border: 1px solid var(--border); display: flex; justify-content: space-between; align-items: center; }
.stats-info h4 { color: var(--text-light); font-size: 0.9rem; text-transform: uppercase; margin-bottom: 5px; }
.stats-info h2 { color: var(--dark); font-size: 2rem; font-weight: 800; }
.stats-card i { font-size: 2rem; color: var(--primary); background: #f0fdf4; padding: 15px; border-radius: var(--radius-sm); }

.table-container { background: var(--white); border-radius: var(--radius-md); border: 1px solid var(--border); overflow-x: auto; margin-top: 25px; box-shadow: var(--shadow-sm); }
.data-table { width: 100%; border-collapse: collapse; text-align: left; font-size: 0.95rem; }
.data-table th { background: #f1f5f9; color: var(--dark); padding: 16px 24px; font-weight: 700; border-bottom: 1.5px solid var(--border); }
.data-table td { padding: 18px 24px; border-bottom: 1px solid var(--border); color: var(--text-main); vertical-align: middle; }
.data-table tr:hover { background: #f8fafc; }

.status-badge { padding: 6px 14px; border-radius: 50px; font-size: 0.8rem; font-weight: 700; text-transform: uppercase; display: inline-block; }
.status-badge.active { background: #d1fae5; color: #065f46; }
.status-badge.completed { background: #dbeafe; color: #1e40af; }
.status-badge.pending { background: #fee2e2; color: #991b1b; }

/* ==========================================================================
   9. DETAILED FOOTER
   ========================================================================== */
.main-footer { background: var(--dark); color: var(--white); padding: 80px 8% 30px; border-top: 4px solid var(--primary); }
.footer-content { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 50px; margin-bottom: 50px; }
.footer-col h4 { color: var(--white); font-size: 1.25rem; margin-bottom: 25px; position: relative; padding-bottom: 10px; font-weight: 700; }
.footer-col h4::after { content: ''; position: absolute; left: 0; bottom: 0; width: 40px; height: 3px; background: var(--primary); border-radius: 5px; }
.footer-col p { color: #cbd5e1; font-size: 0.95rem; line-height: 1.8; }
.footer-col .footer-logo { font-size: 1.75rem; font-weight: 800; color: var(--white); text-decoration: none; margin-bottom: 20px; display: inline-block; }
.footer-col .footer-logo span { color: var(--primary); }

.footer-links { list-style: none; }
.footer-links li { margin-bottom: 12px; }
.footer-links a { color: #cbd5e1; text-decoration: none; font-size: 0.95rem; transition: var(--transition); display: flex; align-items: center; gap: 10px; }
.footer-links a:hover { color: var(--primary); transform: translateX(6px); }
.footer-links a i { font-size: 0.7rem; color: var(--primary); }

.footer-contact-info { list-style: none; }
.footer-contact-info li { display: flex; align-items: flex-start; gap: 15px; margin-bottom: 18px; color: #cbd5e1; font-size: 0.95rem; }
.footer-contact-info i { color: var(--primary); font-size: 1.15rem; margin-top: 4px; }

.footer-socials { display: flex; gap: 12px; margin-top: 25px; }
.footer-socials a { display: inline-flex; align-items: center; justify-content: center; width: 38px; height: 38px; background: rgba(255,255,255,0.04); border-radius: 50%; color: var(--white); transition: var(--transition); }
.footer-socials a:hover { background: var(--primary); color: var(--white); transform: translateY(-3px); }

.footer-bottom { border-top: 1px solid rgba(255,255,255,0.08); padding-top: 30px; display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 20px; }
.footer-bottom p { color: #94a3b8; font-size: 0.9rem; font-weight: 500; }
.footer-bottom a { color: var(--primary); text-decoration: none; font-weight: 700; transition: var(--transition); }
.footer-bottom a:hover { color: var(--white); }

/* ==========================================================================
   10. RESPONSIVE & MOBILE DESIGN (MEDIA QUERIES)
   ========================================================================== */
@media (max-width: 1024px) {
    header { padding: 18px 5%; }
    .top-bar { padding: 10px 5%; }
    .main-footer { padding: 60px 5% 30px; }
}

@media (max-width: 900px) {
    /* Hamburger Menu Trigger */
    .menu-toggle { display: block; }
    
    /* Sidebar Navigation Setup */
    .main-nav {
        position: fixed; top: 0; right: -100%; width: 280px; height: 100vh;
        background: var(--white); box-shadow: -5px 0 25px rgba(0,0,0,0.15);
        transition: 0.4s cubic-bezier(0.4, 0, 0.2, 1); z-index: 1050; 
        display: flex; flex-direction: column; padding: 25px 20px;
    }
    .main-nav.active { right: 0; }
    
    .nav-links { flex-direction: column; gap: 25px; align-items: flex-start; margin-top: 30px; width: 100%; }
    .nav-links li { width: 100%; }
    .nav-links a { display: block; width: 100%; font-size: 1.1rem; }
    
    .sidebar-header { display: flex; justify-content: space-between; align-items: center; width: 100%; border-bottom: 1px solid var(--border); padding-bottom: 15px; }
    .close-btn { font-size: 1.8rem; color: var(--dark); cursor: pointer; transition: 0.3s; }
    .close-btn:hover { color: var(--danger); transform: rotate(90deg); }
    
    .sidebar-overlay {
        display: block; position: fixed; top: 0; left: 0; width: 100%; height: 100vh;
        background: rgba(15, 23, 42, 0.6); backdrop-filter: blur(3px);
        z-index: 1040; opacity: 0; visibility: hidden; transition: 0.4s;
    }
    .sidebar-overlay.active { opacity: 1; visibility: visible; }
    .btn-nav { text-align: center; width: 100%; padding: 14px; }

    /* Other Adjustments */
    .hero h1 { font-size: 2.5rem; }
    .about-preview { flex-direction: column; gap: 40px; }
    .about-image { box-shadow: 12px 12px 0 var(--primary); padding: 40px; }
    .admission-container { flex-direction: column; padding: 40px 5% 80px; gap: 40px; }
    .contact-info { box-shadow: 12px 12px 0 var(--primary); padding: 40px 30px; }
    .form-wrapper { padding: 40px 30px; }
    .footer-bottom { flex-direction: column; text-align: center; gap: 10px; }
    .dashboard-layout { flex-direction: column; }
    .dashboard-main { padding: 20px; }
}

@media (max-width: 480px) {
    .top-bar { display: none; }
    .hero h1 { font-size: 2rem; }
    .pricing-card, .form-wrapper, .contact-info { padding: 30px 20px; }
    .stats-grid { grid-template-columns: 1fr; }
}

/* ==========================================================================
   11. PRINT STYLES (For ID Card & Certificate)
   ========================================================================== */
@media print {
    body { background: var(--white); }
    header, .top-bar, .main-footer, .admin-header, .no-print { display: none !important; }
    .id-card-container, .cert-container { padding: 0 !important; min-height: auto !important; }
    .id-card { box-shadow: none !important; border-color: #000 !important; margin: 0 auto; page-break-inside: avoid; }
    .certificate-box { box-shadow: none !important; border: none !important; width: 100vw; height: 100vh; padding: 20px; margin: 0; }
}