/* =============================================
   LRD TECH | BASE STYLES - v3.0 (Dark Only)
   Theme: Backend-aligned neon glassmorphism
   ============================================= */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&display=swap');

:root {
    /* ── Backend-aligned dark palette ── */
    --primary-aqua: #00d4e8;
    --primary-cyan: #00d4e8;
    --primary-electric: #9b5de5;
    --primary-blue: #4f46e5;
    --bg-deep-navy: #0a0c14;
    --bg-dark-navy: #0a0c14;
    --bg-midnight: #0a0c14;
    --bg-card-navy: rgba(18, 25, 40, 0.85);
    --bg-elevated: #121928;
    --glass-bg: rgba(18, 25, 40, 0.85);
    --glass-bg-light: rgba(10, 20, 40, 0.55);
    --glass-bg-dark: rgba(10, 20, 40, 0.75);
    --glass-border: rgba(0, 212, 232, 0.18);
    --glass-border-hover: rgba(0, 212, 232, 0.35);
    --glow-aqua: 0 0 10px rgba(0,212,232,0.3), 0 0 20px rgba(0,212,232,0.15), 0 0 40px rgba(0,212,232,0.08);
    --glow-aqua-strong: 0 0 15px rgba(0,212,232,0.5), 0 0 30px rgba(0,212,232,0.25), 0 0 60px rgba(0,212,232,0.1);
    --text-primary: #dde4f0;
    --text-secondary: #8a9bbf;
    --text-tertiary: rgba(139,155,191,0.7);
    --text-muted: rgba(139,155,191,0.45);
    --text-aqua: #00d4e8;
    --text-cyan: #00d4e8;
    --gradient-aqua: linear-gradient(135deg, #00d4e8, #9b5de5);
    --gradient-cyan: linear-gradient(135deg, #00d4e8, #4f46e5);
    --accent-gradient: linear-gradient(135deg, #00d4e8, #9b5de5);
    --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'Helvetica Neue', sans-serif;
    --font-mono: 'SF Mono', 'Fira Code', 'Cascadia Code', 'Consolas', monospace;
    --sidebar-width: 260px;
    --space-lg: 24px; --space-xl: 32px; --space-2xl: 48px; --space-3xl: 64px; --space-4xl: 80px;
    --duration-fast: 0.2s; --duration-normal: 0.35s; --duration-slow: 0.5s;
    --radius-sm: 8px; --radius-md: 12px; --radius-lg: 16px; --radius-xl: 20px;
    --z-sidebar: 1000; --z-sidebar-toggle: 1100; --z-navbar: 1200; --z-modal-backdrop: 2000; --z-modal: 2100;

    /* ── Backend-style card/form extras ── */
    --card-shadow: 0 4px 24px rgba(0,0,0,.4);
    --card-border: rgba(0, 212, 232, 0.18);
    --input-bg: rgba(10, 20, 40, 0.65);
    --input-border: rgba(0, 212, 232, 0.22);
    --neon-blue: #00d4e8;
    --neon-purple: #9b5de5;
    --radius-card: 14px;
    --radius-input: 8px;
    --shadow-card: 0 4px 24px rgba(0,0,0,.4);
    --shadow-hover: 0 8px 32px rgba(0,0,0,.5), 0 0 16px rgba(0,212,232,.12);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { -webkit-text-size-adjust: 100%; -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; scroll-behavior: smooth; font-size: 16px; }
body { font-family: var(--font-body); font-size: 1rem; line-height: 1.6; color: var(--text-primary); background: var(--bg-deep-navy); overflow-x: hidden; min-height: 100vh; }
body::before {
    content: ''; position: fixed; top: 0; left: 0; right: 0; bottom: 0;
    background-image: linear-gradient(rgba(0,212,232,0.03) 1px, transparent 1px), linear-gradient(90deg, rgba(0,212,232,0.03) 1px, transparent 1px);
    background-size: 60px 60px; pointer-events: none; z-index: 0;
}
body::after {
    content: ''; position: fixed; top: 0; left: 0; right: 0; bottom: 0;
    background: radial-gradient(ellipse at 20% 20%, rgba(0,212,232,0.04) 0%, transparent 50%), radial-gradient(ellipse at 80% 80%, rgba(155,93,229,0.03) 0%, transparent 50%), radial-gradient(ellipse at 50% 50%, rgba(0,212,232,0.02) 0%, transparent 70%);
    pointer-events: none; z-index: 0;
}
a { color: var(--text-aqua); text-decoration: none; transition: color var(--duration-fast) ease; }
a:hover { color: var(--text-cyan); }
img { max-width: 100%; height: auto; display: block; }
::selection { background: rgba(0,212,232,0.3); color: var(--text-primary); }
::-webkit-scrollbar { width: 4px; height: 4px; }
::-webkit-scrollbar-track { background: var(--bg-deep-navy); }
::-webkit-scrollbar-thumb { background: rgba(0,212,232,0.2); border-radius: 2px; }
#particles-canvas { position: fixed; top: 0; left: 0; width: 100%; height: 100%; pointer-events: none; z-index: 0; }
.container { width: 100%; max-width: 1200px; margin: 0 auto; padding: 0 30px; }
.section { padding: var(--space-4xl) 0; position: relative; }
.section-header { text-align: center; margin-bottom: var(--space-3xl); }
.section-header .section-badge { display: inline-flex; align-items: center; gap: 6px; padding: 6px 16px; font-size: 0.75rem; font-weight: 600; text-transform: uppercase; letter-spacing: 1px; color: var(--text-aqua); background: rgba(0,212,232,0.08); border: 1px solid rgba(0,212,232,0.15); border-radius: 50px; margin-bottom: var(--space-md); }
.section-header h2 { font-size: 2.5rem; font-weight: 800; letter-spacing: -1px; line-height: 1.2; margin-bottom: var(--space-md); background: var(--gradient-aqua); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.section-header p { font-size: 1.1rem; color: var(--text-tertiary); max-width: 600px; margin: 0 auto; }

/* NAVBAR */
.navbar {
    position: fixed; top: 0; left: 0; right: 0; height: 70px; z-index: var(--z-navbar);
    background: rgba(10,20,40,0.75); backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--glass-border); display: flex; align-items: center; justify-content: space-between; padding: 0 30px; transition: all var(--duration-normal) ease;
}
.navbar.scrolled { background: rgba(10,20,40,0.9); backdrop-filter: blur(20px); border-bottom-color: rgba(0,212,232,0.2); box-shadow: 0 4px 30px rgba(0,0,0,0.3); }
.navbar-brand { display: flex; align-items: center; gap: 12px; text-decoration: none; flex-shrink: 0; }
.navbar-logo { width: 36px; height: 36px; border-radius: var(--radius-sm); object-fit: cover; box-shadow: var(--glow-aqua); }
.navbar-brand-text { font-size: 1.25rem; font-weight: 800; letter-spacing: -0.5px; background: var(--gradient-aqua); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; white-space: nowrap; }
.navbar-menu { display: flex; align-items: center; gap: 4px; list-style: none; }
.navbar-menu li a { display: flex; align-items: center; padding: 8px 16px; font-size: 0.875rem; font-weight: 500; color: var(--text-secondary); border-radius: var(--radius-sm); transition: all var(--duration-fast) ease; position: relative; white-space: nowrap; }
.navbar-menu li a::after { content: ''; position: absolute; bottom: 2px; left: 50%; transform: translateX(-50%) scaleX(0); width: 60%; height: 2px; background: var(--gradient-aqua); border-radius: 1px; transition: transform var(--duration-fast) ease; }
.navbar-menu li a:hover { color: var(--text-primary); background: rgba(0,212,232,0.05); }
.navbar-menu li a:hover::after { transform: translateX(-50%) scaleX(1); }
.navbar-menu li a.active { color: var(--text-aqua); }
.navbar-menu li a.active::after { transform: translateX(-50%) scaleX(1); }
.navbar-actions { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
.btn-cta { display: inline-flex; align-items: center; gap: 8px; padding: 10px 24px; font-size: 0.875rem; font-weight: 600; font-family: var(--font-body); color: #fff; background: var(--gradient-aqua); border: none; border-radius: 50px; cursor: pointer; transition: all var(--duration-normal) ease; text-decoration: none; white-space: nowrap; box-shadow: var(--glow-aqua); }
.btn-cta:hover { transform: translateY(-2px); box-shadow: var(--glow-aqua-strong); }
.btn-cta.pulse { animation: ctaPulse 2s infinite; }
@keyframes ctaPulse { 0%,100% { box-shadow: var(--glow-aqua); } 50% { box-shadow: var(--glow-aqua-strong); } }
.btn-auth { display: inline-flex; align-items: center; gap: 6px; padding: 8px 16px; font-size: 0.8rem; font-weight: 500; font-family: var(--font-body); color: var(--text-secondary); background: var(--glass-bg); border: 1px solid var(--glass-border); border-radius: 50px; cursor: pointer; transition: all var(--duration-fast) ease; text-decoration: none; white-space: nowrap; }
.btn-auth:hover { color: var(--text-primary); border-color: var(--glass-border-hover); background: rgba(0,212,232,0.08); }
.navbar-toggle { display: none; background: none; border: none; cursor: pointer; padding: 8px; flex-direction: column; gap: 5px; width: 36px; height: 36px; justify-content: center; align-items: center; }
.navbar-toggle span { display: block; width: 22px; height: 2px; background: var(--text-primary); border-radius: 2px; transition: all var(--duration-normal) ease; }
.navbar-toggle.active span:nth-child(1) { transform: rotate(45deg) translate(5px,5px); }
.navbar-toggle.active span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.navbar-toggle.active span:nth-child(3) { transform: rotate(-45deg) translate(5px,-5px); }
.navbar-mobile-overlay { display: none; position: fixed; top: 70px; left: 0; right: 0; bottom: 0; background: rgba(10,20,40,0.97); backdrop-filter: blur(30px); -webkit-backdrop-filter: blur(30px); z-index: calc(var(--z-navbar) - 1); padding: 24px 20px; overflow-y: auto; opacity: 0; transform: translateY(-10px); transition: all var(--duration-normal) ease; }
.navbar-mobile-overlay.open { opacity: 1; transform: translateY(0); display: block; }
.navbar-mobile-overlay ul { list-style: none; display: flex; flex-direction: column; gap: 2px; }
.navbar-mobile-overlay ul li a { display: flex; align-items: center; gap: 12px; padding: 16px 16px; font-size: 1rem; font-weight: 500; color: var(--text-secondary); border-radius: var(--radius-md); transition: all var(--duration-fast) ease; }
.navbar-mobile-overlay ul li a:hover, .navbar-mobile-overlay ul li a.active { color: var(--text-aqua); background: rgba(0,212,232,0.05); }
.navbar-mobile-overlay .mobile-auth { margin-top: 24px; display: flex; flex-direction: column; gap: 12px; }
.navbar-mobile-overlay .mobile-auth .btn-cta { width: 100%; justify-content: center; padding: 14px 24px; }

/* SIDE PANEL */
.side-panel { position: fixed; top: 70px; left: 0; bottom: 0; width: var(--sidebar-width); background: var(--glass-bg-dark); backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px); border-right: 1px solid var(--glass-border); z-index: var(--z-sidebar); overflow-y: auto; overflow-x: hidden; transition: transform var(--duration-slow) cubic-bezier(0.32, 0.94, 0.6, 1); display: flex; flex-direction: column; }
.side-panel::-webkit-scrollbar { width: 0; }
.side-panel-header { padding: 16px 18px 12px; border-bottom: 1px solid var(--glass-border); display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
.side-panel-header .panel-icon { font-size: 1.2rem; color: var(--text-aqua); }
.side-panel-header .panel-title { font-size: 0.8rem; font-weight: 600; text-transform: uppercase; letter-spacing: 1.5px; color: var(--text-tertiary); }
.side-panel-nav { padding: 8px 10px; flex: 1; }
.side-panel-nav ul { list-style: none; }
.side-panel-nav ul li { margin-bottom: 2px; }
.side-panel-nav ul li a { display: flex; align-items: center; gap: 12px; padding: 10px 14px; font-size: 0.85rem; font-weight: 500; color: var(--text-secondary); border-radius: var(--radius-sm); transition: all var(--duration-fast) ease; position: relative; }
.side-panel-nav ul li a .nav-icon { width: 28px; height: 28px; display: flex; align-items: center; justify-content: center; font-size: 1rem; color: var(--text-tertiary); transition: color var(--duration-fast) ease; flex-shrink: 0; }
.side-panel-nav ul li a:hover { color: var(--text-primary); background: rgba(0,212,232,0.06); }
.side-panel-nav ul li a:hover .nav-icon { color: var(--text-aqua); }
.side-panel-nav ul li a.active { color: var(--text-aqua); background: rgba(0,212,232,0.1); box-shadow: inset 3px 0 0 var(--primary-aqua); }
.side-panel-nav ul li a.active .nav-icon { color: var(--text-aqua); }
.side-panel-nav .nav-divider { height: 1px; background: var(--glass-border); margin: 12px 14px; }
.side-panel-nav .nav-section-label { padding: 16px 14px 8px; font-size: 0.65rem; font-weight: 700; text-transform: uppercase; letter-spacing: 1.5px; color: var(--text-aqua); list-style: none; margin-top: 8px; margin-bottom: 4px; opacity: 0.9; }
.side-panel-toggle { display: none; position: fixed; top: 80px; left: 14px; z-index: var(--z-sidebar-toggle); width: 40px; height: 40px; border: 1px solid var(--glass-border); border-radius: var(--radius-sm); background: var(--glass-bg); backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px); cursor: pointer; justify-content: center; align-items: center; transition: all var(--duration-normal) ease; color: var(--text-secondary); font-size: 1.1rem; }
.side-panel-toggle:hover { border-color: var(--glass-border-hover); color: var(--text-aqua); }

/* iOS Dropdown */
.nav-dropdown { position: relative; }
.nav-dropdown .nav-dropdown-toggle { display: flex; align-items: center; gap: 12px; padding: 10px 14px; font-size: 0.85rem; font-weight: 500; color: var(--text-secondary); border-radius: var(--radius-sm); transition: all var(--duration-fast) ease; cursor: pointer; text-decoration: none; }
.nav-dropdown .nav-dropdown-toggle .nav-icon { width: 28px; height: 28px; display: flex; align-items: center; justify-content: center; font-size: 1rem; color: var(--text-tertiary); transition: color var(--duration-fast) ease; flex-shrink: 0; }
.nav-dropdown .nav-dropdown-toggle:hover { color: var(--text-primary); background: rgba(0,212,232,0.06); }
.nav-dropdown .nav-dropdown-toggle:hover .nav-icon { color: var(--text-aqua); }
.nav-dropdown .nav-dropdown-toggle.active { color: var(--text-aqua); background: rgba(0,212,232,0.1); }
.nav-dropdown .nav-chevron { margin-left: auto; font-size: 1.3rem; color: var(--text-muted); transition: transform 0.3s cubic-bezier(0.32, 0.94, 0.6, 1); font-weight: 300; line-height: 1; display: inline-block; }
.nav-dropdown.open .nav-chevron { transform: rotate(90deg); color: var(--text-aqua); }
.nav-dropdown-menu { list-style: none; overflow: hidden; max-height: 0; opacity: 0; transition: max-height 0.4s cubic-bezier(0.32, 0.94, 0.6, 1), opacity 0.3s ease, margin 0.35s ease; margin: 0 0 0 12px; border-left: 1px solid var(--glass-border); }
.nav-dropdown.open .nav-dropdown-menu { max-height: 500px; opacity: 1; margin: 4px 0 8px 12px; }
.nav-dropdown-menu li a { display: flex; align-items: center; gap: 10px; padding: 8px 14px 8px 28px; font-size: 0.82rem; font-weight: 400; color: var(--text-tertiary); border-radius: var(--radius-sm); transition: all var(--duration-fast) ease; text-decoration: none; }
.nav-dropdown-menu li a .nav-icon { width: 22px; height: 22px; display: flex; align-items: center; justify-content: center; font-size: 0.85rem; color: var(--text-muted); transition: color var(--duration-fast) ease; flex-shrink: 0; }
.nav-dropdown-menu li a:hover { color: var(--text-primary); background: rgba(0,212,232,0.04); }
.nav-dropdown-menu li a:hover .nav-icon { color: var(--text-aqua); }
.nav-dropdown-menu li a.active { color: var(--text-aqua); background: rgba(0,212,232,0.08); }
.side-panel-footer { padding: 12px 14px; border-top: 1px solid var(--glass-border); flex-shrink: 0; }
.side-panel-user { display: flex; align-items: center; gap: 10px; font-size: 0.8rem; color: var(--text-secondary); }
.side-panel-user .user-avatar { width: 32px; height: 32px; border-radius: 50%; background: var(--bg-elevated); display: flex; align-items: center; justify-content: center; font-size: 1rem; flex-shrink: 0; border: 1px solid var(--glass-border); overflow: hidden; }
.side-panel-user .user-avatar img { width: 100%; height: 100%; object-fit: cover; }
.side-panel-user .user-name { font-weight: 500; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.notif-badge { display: inline-flex; align-items: center; justify-content: center; min-width: 18px; height: 18px; padding: 0 5px; font-size: 0.65rem; font-weight: 700; color: #fff; background: #ff3b30; border-radius: 9px; margin-left: 4px; line-height: 1; }

.main-content { margin-left: var(--sidebar-width); margin-top: 70px; min-height: calc(100vh - 70px); padding: 40px 50px 80px; position: relative; z-index: 1; transition: margin-left var(--duration-slow) cubic-bezier(0.32, 0.94, 0.6, 1); }

/* GLASS CARD */
.glass-card { background: var(--glass-bg); backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px); border: 1px solid var(--glass-border); border-radius: var(--radius-lg); padding: var(--space-lg); transition: all var(--duration-normal) ease; position: relative; overflow: hidden; }
.glass-card::before { content: ''; position: absolute; top: 0; left: 0; right: 0; height: 1px; background: var(--gradient-aqua); opacity: 0; transition: opacity var(--duration-normal) ease; }
.glass-card:hover { border-color: var(--glass-border-hover); transform: translateY(-4px); box-shadow: var(--glow-aqua); }
.glass-card:hover::before { opacity: 1; }

/* TYPOGRAPHY */
h1, h2, h3, h4, h5, h6 { font-weight: 700; letter-spacing: -0.3px; line-height: 1.2; margin-bottom: 12px; }
h1 { font-size: 2.8rem; } h2 { font-size: 2rem; } h3 { font-size: 1.3rem; } h4 { font-size: 1.1rem; }
p { margin-bottom: 10px; color: var(--text-secondary); }
.gradient-text { background: var(--gradient-aqua); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.text-center { text-align: center; }

/* BUTTONS */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; padding: 12px 24px; font-size: 0.9rem; font-weight: 600; font-family: var(--font-body); border-radius: 50px; cursor: pointer; transition: all var(--duration-fast) ease; text-decoration: none; white-space: nowrap; border: none; }
.btn-primary { color: #fff; background: var(--gradient-aqua); box-shadow: var(--glow-aqua); }
.btn-primary:hover { transform: translateY(-2px); box-shadow: var(--glow-aqua-strong); }
.btn-outline { color: var(--text-primary); background: transparent; border: 1.5px solid var(--glass-border-hover); }
.btn-outline:hover { border-color: var(--text-aqua); background: rgba(0,212,232,0.06); transform: translateY(-2px); }
.btn-sm { padding: 8px 16px; font-size: 0.8rem; }
.btn-lg { padding: 16px 32px; font-size: 1rem; }
.btn-block { width: 100%; justify-content: center; }
.btn-submit { display: inline-flex; align-items: center; gap: 8px; padding: 14px 32px; font-size: 0.9rem; font-weight: 600; font-family: var(--font-body); color: #fff; background: var(--gradient-aqua); border: none; border-radius: 50px; cursor: pointer; transition: all var(--duration-normal) ease; }
.btn-submit:hover { transform: translateY(-2px); box-shadow: var(--glow-aqua-strong); }
.btn-submit:disabled { opacity: 0.5; cursor: not-allowed; transform: none; }
.btn-enroll { display: inline-flex; align-items: center; gap: 6px; padding: 10px 24px; font-size: 0.85rem; font-weight: 600; color: #fff; background: var(--gradient-aqua); border: none; border-radius: 50px; cursor: pointer; transition: all var(--duration-fast) ease; text-decoration: none; }
.btn-enroll:hover { transform: translateY(-2px); box-shadow: var(--glow-aqua); }

/* ALERTS */
.alert { padding: 16px 20px; border-radius: var(--radius-md); margin-bottom: 20px; font-size: 0.9rem; display: flex; align-items: center; gap: 12px; }
.alert-success { background: rgba(0,212,232,0.08); border: 1px solid rgba(0,212,232,0.2); color: var(--text-aqua); }
.alert-error { background: rgba(255,59,48,0.1); border: 1px solid rgba(255,59,48,0.2); color: #ff6b6b; }
.success { background: rgba(0,212,232,0.08); border: 1px solid rgba(0,212,232,0.2); color: var(--text-aqua); padding: 12px 16px; border-radius: var(--radius-sm); margin-bottom: 16px; font-size: 0.85rem; }
.error { background: rgba(255,59,48,0.1); border: 1px solid rgba(255,59,48,0.2); color: #ff6b6b; padding: 12px 16px; border-radius: var(--radius-sm); margin-bottom: 16px; font-size: 0.85rem; }

/* MODAL */
.modal-backdrop { position: fixed; top: 0; left: 0; right: 0; bottom: 0; background: rgba(0,0,0,0.7); backdrop-filter: blur(8px); z-index: var(--z-modal-backdrop); display: flex; align-items: center; justify-content: center; padding: 20px; }
.modal { background: var(--glass-bg-dark); backdrop-filter: blur(40px); border: 1px solid var(--glass-border); border-radius: var(--radius-lg); max-width: 500px; width: 100%; max-height: 90vh; overflow-y: auto; box-shadow: var(--glow-aqua), 0 20px 60px rgba(0,0,0,0.6); }
.modal-header { padding: 24px 24px 16px; border-bottom: 1px solid var(--glass-border); }
.modal-title { font-size: 1.2rem; font-weight: 700; margin-bottom: 0; }
.modal-body { padding: 24px; }
.modal-footer { padding: 16px 24px 24px; display: flex; gap: 12px; justify-content: flex-end; border-top: 1px solid var(--glass-border); }

/* FORMS */
.form-group { margin-bottom: 20px; }
.form-group label { display: block; font-size: 0.8rem; font-weight: 600; color: var(--text-secondary); margin-bottom: 6px; }
.form-group input, .form-group textarea, .form-group select { width: 100%; padding: 12px 14px; font-size: 0.9rem; font-family: var(--font-body); color: var(--text-primary); background: var(--input-bg); border: 1px solid var(--input-border); border-radius: var(--radius-sm); transition: all var(--duration-fast) ease; }
.form-group input:focus, .form-group textarea:focus, .form-group select:focus { outline: none; border-color: var(--text-aqua); box-shadow: 0 0 0 3px rgba(0,212,232,0.08); background: rgba(0,212,232,0.03); }
.form-group input::placeholder, .form-group textarea::placeholder { color: var(--text-muted); }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }

/* TABLE */
.table-responsive { width: 100%; overflow-x: auto; margin-bottom: 20px; }
table { width: 100%; border-collapse: separate; border-spacing: 0; font-size: 0.85rem; background: var(--glass-bg); border-radius: var(--radius-md); overflow: hidden; border: 1px solid var(--glass-border); }
thead { background: rgba(0,212,232,0.04); }
th, td { padding: 12px 16px; text-align: left; white-space: nowrap; }
th { font-weight: 600; color: var(--text-tertiary); text-transform: uppercase; font-size: 0.7rem; letter-spacing: 0.5px; border-bottom: 1px solid var(--glass-border); }
tbody tr { border-bottom: 1px solid var(--glass-border); transition: background var(--duration-fast) ease; }
tbody tr:last-child { border-bottom: none; }
tbody tr:hover { background: rgba(0,212,232,0.02); }
td { color: var(--text-secondary); }

/* BADGES */
.badge { display: inline-flex; align-items: center; padding: 4px 10px; font-size: 0.7rem; font-weight: 600; border-radius: 20px; text-transform: uppercase; letter-spacing: 0.3px; }
.badge-primary { background: rgba(0,212,232,0.1); color: var(--text-aqua); border: 1px solid rgba(0,212,232,0.15); }
.badge-success { background: rgba(52,199,89,0.1); color: #34c759; border: 1px solid rgba(52,199,89,0.15); }
.badge-warning { background: rgba(255,149,0,0.1); color: #ff9500; border: 1px solid rgba(255,149,0,0.15); }
.badge-danger { background: rgba(255,59,48,0.1); color: #ff3b30; border: 1px solid rgba(255,59,48,0.15); }

/* FOUNDER */
.founder { display: flex; gap: 40px; align-items: flex-start; flex-wrap: wrap; }
.founder-avatar img { max-width: 200px; border-radius: var(--radius-lg); box-shadow: var(--glow-aqua), 0 8px 24px rgba(0,0,0,0.3); }
.founder-info { flex: 1; min-width: 280px; }
.founder-info h2 { margin-bottom: 8px; background: none; -webkit-text-fill-color: var(--text-primary); color: var(--text-primary); }
.founder-title { font-weight: 600; color: var(--text-aqua); margin-bottom: 16px; font-size: 1rem; }
.placeholder-img { width: 100%; height: 180px; object-fit: cover; border-radius: var(--radius-md); background: var(--bg-elevated); display: flex; align-items: center; justify-content: center; font-size: 2.5rem; color: var(--text-muted); }

/* FOOTER */
.site-footer {
    margin-top: var(--space-4xl); margin-left: var(--sidebar-width);
    border-top: 1px solid rgba(0,212,232,0.15);
    background: var(--glass-bg-dark); backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
    padding: var(--space-3xl) 0 var(--space-xl); position: relative;
    transition: margin-left var(--duration-slow) cubic-bezier(0.32, 0.94, 0.6, 1); z-index: 1;
}
.site-footer::before { content: ''; position: absolute; top: -1px; left: 0; right: 0; height: 1px; background: linear-gradient(90deg, transparent, var(--primary-aqua), transparent); }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; max-width: 1200px; margin: 0 auto; padding: 0 50px; }
.footer-brand .footer-logo { font-size: 1.2rem; font-weight: 800; background: var(--gradient-aqua); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; margin-bottom: 12px; display: block; }
.footer-brand p { font-size: 0.85rem; color: var(--text-tertiary); line-height: 1.7; max-width: 320px; }
.footer-col h4 { font-size: 0.8rem; font-weight: 700; text-transform: uppercase; letter-spacing: 1px; margin-bottom: 16px; color: var(--text-secondary); }
.footer-col ul { list-style: none; }
.footer-col ul li { margin-bottom: 8px; }
.footer-col ul li a { font-size: 0.85rem; color: var(--text-tertiary); transition: color var(--duration-fast) ease; }
.footer-col ul li a:hover { color: var(--text-aqua); }
.footer-bottom { max-width: 1200px; margin: 30px auto 0; padding: 20px 50px 0; border-top: 1px solid var(--glass-border); text-align: center; }
.footer-bottom p { font-size: 0.8rem; color: var(--text-muted); margin-bottom: 0; padding: 0 16px; }
.footer-bottom span { color: var(--text-aqua); }

/* SOCIAL */
.social-links { display: flex; gap: 10px; flex-wrap: wrap; }
.social-link { width: 44px; height: 44px; display: flex; align-items: center; justify-content: center; font-size: 1.1rem; background: var(--glass-bg); border: 1px solid var(--glass-border); border-radius: var(--radius-sm); color: var(--text-secondary); text-decoration: none; transition: all var(--duration-fast) ease; flex-shrink: 0; }
.social-link:hover { border-color: var(--glass-border-hover); color: var(--text-aqua); transform: translateY(-2px); box-shadow: var(--glow-aqua); }

/* COURSE META */
.course-meta { display: flex; gap: 12px; flex-wrap: wrap; margin: 12px 0; }
.course-meta span { font-size: 0.75rem; color: var(--text-muted); display: flex; align-items: center; gap: 4px; }
.course-meta span strong { color: var(--text-secondary); font-weight: 600; }
.course-price { font-size: 1.2rem; font-weight: 800; color: var(--text-aqua); margin: 10px 0; }

/* STAR RATING */
.star-rating-input .star { color: rgba(255,255,255,0.15); transition: color 0.15s ease; user-select: none; }
.star-rating-input .star.active, .star-rating-input .star.hover { color: #ffd700; }

/* UTILITIES */
.d-flex { display: flex; } .flex-wrap { flex-wrap: wrap; } .align-center { align-items: center; }
.justify-between { justify-content: space-between; } .justify-center { justify-content: center; }
.gap-2 { gap: 8px; } .gap-3 { gap: 12px; } .gap-4 { gap: 16px; }
.mt-4 { margin-top: 16px; } .mb-0 { margin-bottom: 0; } .mb-4 { margin-bottom: 16px; }
.w-full { width: 100%; } .text-primary { color: var(--text-primary) !important; }
.text-secondary { color: var(--text-secondary) !important; } .text-tertiary { color: var(--text-tertiary) !important; }
.text-aqua { color: var(--text-aqua) !important; } .hidden { display: none; }

/* ════════════════════════════════════════════════════════════════════════════
   TOMSELECT DARK THEME — Searchable Dropdowns (backend-aligned)
   ════════════════════════════════════════════════════════════════════════════ */
.ts-wrapper { position: relative; z-index: 50; }
.ts-control {
    border: 1px solid var(--input-border) !important;
    border-radius: var(--radius-sm) !important;
    background: var(--input-bg) !important;
    color: var(--text-primary) !important;
    font-family: var(--font-body) !important;
    font-size: 0.85rem !important;
    padding: 10px 14px !important;
    min-height: auto !important;
    box-shadow: none !important;
    transition: all var(--duration-fast) ease;
}
.ts-control:hover { border-color: var(--glass-border-hover) !important; }
.ts-wrapper.focus .ts-control {
    border-color: var(--text-aqua) !important;
    box-shadow: 0 0 0 3px rgba(0,212,232,0.08) !important;
    background: rgba(0,212,232,0.03) !important;
}
.ts-dropdown {
    background: var(--bg-deep-navy) !important;
    border: 1px solid var(--glass-border) !important;
    border-radius: var(--radius-sm) !important;
    box-shadow: 0 8px 32px rgba(0,0,0,0.6), 0 0 0 1px rgba(0,212,232,0.08) !important;
    color: var(--text-secondary) !important;
    font-family: var(--font-body) !important;
    font-size: 0.85rem !important;
    z-index: 99999 !important;
    overflow: hidden;
    margin-top: 4px !important;
}
.ts-dropdown .ts-dropdown-content { max-height: 280px; scrollbar-width: thin; background: var(--bg-deep-navy); }
.ts-dropdown .ts-dropdown-content::-webkit-scrollbar { width: 4px; }
.ts-dropdown .ts-dropdown-content::-webkit-scrollbar-track { background: var(--bg-deep-navy); }
.ts-dropdown .ts-dropdown-content::-webkit-scrollbar-thumb { background: rgba(0,212,232,0.2); border-radius: 2px; }
.ts-dropdown .ts-dropdown-content .ts-dropdown-search,
.ts-dropdown input[type="text"] {
    background: var(--input-bg) !important;
    border: 1px solid var(--input-border) !important;
    border-radius: 6px !important;
    color: var(--text-primary) !important;
    font-family: var(--font-body) !important;
    font-size: 0.8rem !important;
    padding: 8px 12px !important;
    margin-bottom: 4px !important;
    width: calc(100% - 12px) !important;
    box-sizing: border-box !important;
    outline: none !important;
}
.ts-dropdown input[type="text"]:focus { border-color: var(--text-aqua) !important; box-shadow: 0 0 0 2px rgba(0,212,232,0.1) !important; }
.ts-dropdown input::placeholder { color: var(--text-muted) !important; }
.ts-dropdown .option { padding: 10px 14px !important; border-bottom: 1px solid rgba(0,212,232,0.06) !important; transition: background var(--duration-fast) ease; color: var(--text-secondary) !important; cursor: pointer; background: transparent !important; }
.ts-dropdown .option:hover, .ts-dropdown .option.active { background: rgba(0,212,232,0.12) !important; color: var(--text-primary) !important; }
.ts-dropdown .option.selected { background: rgba(0,212,232,0.08) !important; color: var(--text-aqua) !important; font-weight: 600; }
.ts-dropdown .create { color: var(--text-aqua) !important; padding: 10px 14px !important; background: transparent !important; }
.ts-dropdown .create:hover { background: rgba(0,212,232,0.1) !important; }
.ts-wrapper .ts-control .item { color: var(--text-primary) !important; }
.ts-wrapper.multi .ts-control .item { background: rgba(0,212,232,0.1) !important; border: 1px solid rgba(0,212,232,0.15) !important; border-radius: 4px !important; padding: 2px 8px !important; color: var(--text-aqua) !important; }
.ts-wrapper.multi .ts-control .item .remove { border-color: rgba(0,212,232,0.15) !important; color: var(--text-tertiary) !important; }
.ts-wrapper.multi .ts-control .item .remove:hover { color: #ff3b30 !important; background: transparent !important; }
.ts-wrapper .ts-control input { color: var(--text-primary) !important; font-size: 0.85rem !important; }
.ts-wrapper .ts-control input::placeholder { color: var(--text-muted) !important; }
.ts-dropdown .optgroup-header { color: var(--text-aqua) !important; background: rgba(0,0,0,0.3) !important; font-size: 0.7rem !important; font-weight: 700 !important; text-transform: uppercase; letter-spacing: 0.5px; padding: 8px 14px !important; border-bottom: 1px solid var(--glass-border) !important; }
.ts-wrapper.disabled .ts-control { opacity: 0.5; cursor: not-allowed; }
.ts-wrapper .dropdown-active .ts-control::after { border-color: var(--text-aqua) transparent transparent transparent !important; }
.ts-wrapper.single .ts-control::after { border-color: var(--text-tertiary) transparent transparent transparent !important; }
.ts-wrapper.single.dropdown-active .ts-control::after { border-color: var(--text-aqua) transparent transparent transparent !important; }
.ts-wrapper.single .ts-control { background-image: none !important; }
.ts-dropdown .ts-no-results { color: var(--text-muted) !important; padding: 14px !important; text-align: center; background: var(--bg-deep-navy) !important; }
.ts-wrapper .ts-control .dropdown-menu { display: none; }

/* ════════════════════════════════════════════════════════════════════════════
   NATIVE SELECT DARK THEME (backend-aligned — no white backgrounds!)
   ════════════════════════════════════════════════════════════════════════════ */
select {
    appearance: auto; -webkit-appearance: auto; -moz-appearance: auto;
    background-color: var(--input-bg) !important;
    color: var(--text-primary) !important;
    border: 1px solid var(--input-border) !important;
    border-radius: var(--radius-sm) !important;
    padding: 10px 14px !important;
    font-family: var(--font-body) !important;
    font-size: 0.85rem !important;
    cursor: pointer; outline: none !important;
}
select:hover { border-color: var(--glass-border-hover) !important; }
select:focus { border-color: var(--text-aqua) !important; box-shadow: 0 0 0 3px rgba(0,212,232,0.08) !important; }
select option { background: var(--bg-deep-navy) !important; color: var(--text-primary) !important; padding: 10px !important; }
select option:hover, select option:checked { background: rgba(0,212,232,0.12) !important; color: var(--text-aqua) !important; }
@-moz-document url-prefix() { select { background-color: #0a0c14 !important; } }

/* ════════════════════════════════════════════════════════════════════════════
    BACKEND-ALIGNED COMPONENT CLASSES (now defined per-page or in header.php)
    These styles are global reusable classes for all dashboards.
    ════════════════════════════════════════════════════════════════════════════ */

/* ── Export Button Classes ── */
.ex-btn {
    display: inline-flex; align-items: center; gap: 6px; height: 34px; padding: 0 16px;
    border-radius: 8px; font-size: .82rem; font-weight: 700; cursor: pointer;
    border: none; transition: all .15s; text-decoration: none !important; white-space: nowrap;
}
.ex-btn-primary { background: var(--primary-blue); color: #fff; }
.ex-btn-primary:hover { background: #4338ca; color: #fff; box-shadow: 0 2px 10px rgba(79,70,229,.35); }
.ex-btn-green   { background: #059669; color: #fff; }
.ex-btn-green:hover   { background: #047857; color: #fff; box-shadow: 0 2px 10px rgba(5,150,105,.35); }
.ex-btn-blue    { background: #2563eb; color: #fff; }
.ex-btn-blue:hover    { background: #1d4ed8; color: #fff; box-shadow: 0 2px 10px rgba(37,99,235,.35); }
.ex-btn-outline { background: rgba(10,20,40,.55); border: 1.5px solid rgba(0,212,232,.22); color: var(--text-secondary); }
.ex-btn-outline:hover { border-color: var(--neon-blue); color: var(--neon-blue); }

/* ── Auth / Login page styles ── */
.auth-card {
    background: var(--bg-card-navy); backdrop-filter: blur(12px);
    border: 1px solid var(--card-border); border-radius: 32px;
    box-shadow: var(--card-shadow); padding: 2.5rem 2rem;
    max-width: 440px; width: 100%; margin: 0 auto;
}
.auth-logo-area { text-align: center; margin-bottom: 2rem; }
.auth-logo-area img { max-height: 70px; width: auto; margin: 0 auto .75rem; }
.auth-logo-area h2 { font-weight: 600; font-size: 1.8rem; color: var(--text-primary); letter-spacing: -0.5px; }
.auth-brand-sub { color: var(--text-secondary); font-size: 0.95rem; }
.auth-form-group { margin-bottom: 1.5rem; }
.auth-form-group label { display: block; font-weight: 500; font-size: 0.9rem; color: var(--text-primary); margin-bottom: 0.3rem; }
.auth-form-group input {
    width: 100%; padding: 0.85rem 1rem; border: 1.5px solid var(--input-border);
    border-radius: 18px; font-size: 1rem; background: var(--input-bg); color: var(--text-primary);
    transition: all 0.2s; font-family: var(--font-body);
}
.auth-form-group input:focus { outline: none; border-color: var(--neon-blue); box-shadow: 0 0 0 4px rgba(0,212,232,0.1); }
.auth-btn {
    width: 100%; background: var(--accent-gradient); color: #fff; border: none;
    padding: 0.9rem; border-radius: 40px; font-weight: 600; font-size: 1.1rem;
    cursor: pointer; transition: all 0.2s; margin-top: 1rem; font-family: var(--font-body);
}
.auth-btn:hover { opacity: 0.9; box-shadow: 0 4px 18px rgba(0,212,232,.3); }
.auth-btn:active { transform: scale(0.98); }
.auth-alert { background: rgba(220,38,38,0.1); color: #fca5a5; padding: 0.9rem 1.2rem; border-radius: 40px; font-size: 0.95rem; margin-bottom: 1.8rem; border: 1px solid rgba(220,38,38,0.2); text-align: center; }
.auth-footer-note { text-align: center; margin-top: 2rem; font-size: 0.85rem; color: var(--text-secondary); }
.auth-footer-note a { color: var(--text-primary); text-decoration: none; font-weight: 500; }
.auth-footer-note a:hover { text-decoration: underline; color: var(--neon-blue); }

/* ── Password Strength Bar ── */
.pwd-strength { height: 4px; border-radius: 4px; margin-top: 6px; transition: width .3s, background .3s; background: rgba(0,212,232,.1); }
.pwd-strength.weak   { background: #dc2626; width: 30%; }
.pwd-strength.medium { background: #d97706; width: 65%; }
.pwd-strength.strong { background: #059669; width: 100%; }

/* ── Animations ── */
@keyframes fadeInUp { from { opacity: 0; transform: translateY(20px); } to { opacity: 1; transform: translateY(0); } }
@keyframes float { 0%,100% { transform: translateY(0px) rotate(0deg); } 50% { transform: translateY(-20px) rotate(3deg); } }
.settings-card, .page-header-section { animation: fadeInUp .5s ease-out both; }
.settings-card:nth-child(1) { animation-delay: .05s; }
.settings-card:nth-child(2) { animation-delay: .12s; }
.settings-card:nth-child(3) { animation-delay: .19s; }

/* ════════════════════════════════════════════════════════════════════════════
   RESPONSIVE
   ════════════════════════════════════════════════════════════════════════════ */
@media (max-width: 1200px) {
    .navbar-menu li a { padding: 8px 12px; font-size: 0.8rem; }
    .btn-cta { padding: 8px 20px; font-size: 0.8rem; }
    .btn-auth { padding: 6px 12px; font-size: 0.75rem; }
}
@media (max-width: 1024px) {
    .navbar-menu li a { padding: 6px 10px; font-size: 0.75rem; }
    .btn-cta { padding: 8px 16px; font-size: 0.75rem; }
}
@media (max-width: 1023px) {
    .navbar-menu { display: none; }
    .navbar-actions .btn-auth { display: none; }
    .navbar-toggle { display: flex; }
    .navbar-mobile-overlay { display: block; }
    .side-panel { transform: translateX(-100%); }
    .side-panel.open { transform: translateX(0); box-shadow: 0 0 0 9999px rgba(0,0,0,0.6); }
    .side-panel-toggle { display: flex; }
    .main-content { margin-left: 0; padding: 24px 24px 60px; padding-top: 90px; }
    .site-footer { margin-left: 0 !important; padding: 48px 0 24px; }
    .footer-grid { grid-template-columns: 1fr 1fr; gap: 30px; padding: 0 24px; }
    .footer-bottom { padding: 16px 24px 0; }
    .navbar { padding: 0 20px; }
    .navbar-actions { gap: 8px; }
}
@media (max-width: 768px) {
    .navbar { padding: 0 16px; height: 64px; }
    .navbar-logo { width: 30px; height: 30px; }
    .navbar-brand-text { font-size: 1rem; }
    .navbar-mobile-overlay { top: 64px; }
    .side-panel { top: 64px; }
    .side-panel-toggle { top: 74px; }
    .main-content { padding: 16px 18px 50px; padding-top: 80px; }
    .container { padding: 0 18px; }
    .section { padding: 48px 0; }
    .section-header { margin-bottom: 32px; }
    .section-header h2 { font-size: 1.8rem; }
    .section-header p { font-size: 1rem; }
    h1 { font-size: 2rem; } h2 { font-size: 1.5rem; }
    .footer-grid { grid-template-columns: 1fr 1fr; gap: 24px; }
    .founder { flex-direction: column; gap: 24px; }
    .founder-avatar img { max-width: 160px; }
    .form-grid { grid-template-columns: 1fr; }
    .btn { padding: 10px 20px; font-size: 0.85rem; }
    .btn-submit { padding: 12px 24px; font-size: 0.85rem; }
    .dash-kpi-card .kpi-value { font-size: 1.25rem; }
    .dash-welcome h2 { font-size: .9rem; }
    .dash-welcome-right { display: none; }
    .page-header-section { padding: 1.25rem; }
    .page-main-title { font-size: 1.3rem; }
    .ex-filter-bar { flex-direction: column; align-items: stretch; }
    .ex-filter-bar > * { width: 100%; }
    .profile-stats-bar { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 600px) {
    .navbar { padding: 0 14px; height: 60px; }
    .navbar-brand-text { font-size: 0.95rem; }
    .navbar-logo { width: 28px; height: 28px; }
    .navbar-mobile-overlay { top: 60px; padding: 20px 16px; }
    .navbar-mobile-overlay ul li a { padding: 14px 14px; font-size: 0.95rem; }
    .side-panel { top: 60px; }
    .side-panel-toggle { top: 70px; left: 10px; width: 36px; height: 36px; font-size: 1rem; }
    .main-content { padding: 14px 14px 40px; padding-top: 76px; }
    .container { padding: 0 14px; }
    .section { padding: 40px 0; }
    .section-header h2 { font-size: 1.5rem; }
    .btn-cta { padding: 8px 14px; font-size: 0.75rem; }
    .btn { padding: 10px 18px; font-size: 0.85rem; }
    .footer-grid { grid-template-columns: 1fr; gap: 28px; }
    .footer-brand p { max-width: 100%; }
    .course-meta { flex-direction: column; gap: 4px; }
    .founder-avatar img { max-width: 120px; }
    .social-link { width: 38px; height: 38px; font-size: 1rem; }
}
@media (max-width: 480px) {
    .navbar { padding: 0 10px; height: 56px; }
    .navbar-brand-text { font-size: 0.85rem; }
    .navbar-logo { width: 24px; height: 24px; }
    .navbar-actions { gap: 4px; }
    .btn-cta { padding: 6px 12px; font-size: 0.7rem; }
    .navbar-toggle { width: 32px; height: 32px; gap: 4px; }
    .navbar-toggle span { width: 18px; height: 2px; }
    .navbar-mobile-overlay { top: 56px; }
    .side-panel { top: 56px; width: 240px; }
    .side-panel-toggle { top: 66px; left: 8px; width: 32px; height: 32px; font-size: 0.9rem; }
    .main-content { padding: 12px 12px 36px; padding-top: 70px; }
    .container { padding: 0 12px; }
    .section-header h2 { font-size: 1.3rem; }
    h1 { font-size: 1.6rem; } h2 { font-size: 1.2rem; }
    .section-badge { font-size: 0.65rem; padding: 4px 12px; }
    .footer-col h4 { font-size: 0.75rem; }
    .footer-col ul li a { font-size: 0.8rem; }
    .footer-bottom p { font-size: 0.7rem; }
    .dash-kpi-card { padding: 12px 12px 10px; }
    .dash-kpi-card .kpi-value { font-size: 1.05rem; }
    .quick-action { padding: 12px 6px; }
    .quick-action .qa-icon { width: 36px; height: 36px; font-size: 1rem; }
    .quick-action .qa-label { font-size: .68rem; }
    .profile-stats-bar { grid-template-columns: 1fr; }
}
@media (max-width: 400px) {
    .navbar { padding: 0 8px; height: 52px; }
    .navbar-brand-text { font-size: 0.8rem; }
    .navbar-logo { width: 22px; height: 22px; }
    .navbar-actions .btn-cta { padding: 5px 10px; font-size: 0.65rem; gap: 4px; }
    .navbar-toggle { width: 28px; height: 28px; gap: 3px; }
    .navbar-toggle span { width: 16px; height: 1.5px; }
    .navbar-mobile-overlay { top: 52px; }
    .side-panel { top: 52px; width: 220px; }
    .side-panel-toggle { top: 62px; left: 6px; width: 28px; height: 28px; font-size: 0.8rem; }
    .main-content { padding: 10px 10px 30px; padding-top: 66px; }
    .container { padding: 0 10px; }
}