/* ============================================================
   UJIAN DIGITAL — Global Styles
   ============================================================ */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap');

:root {
    --bg-primary: #0a0e1a;
    --bg-secondary: #111827;
    --bg-card: #1a2035;
    --bg-card-hover: #1f2847;
    --bg-input: #151d30;
    --border-color: #2a3550;
    --border-focus: #6366f1;
    --text-primary: #f1f5f9;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    --accent: #6366f1;
    --accent-hover: #818cf8;
    --accent-glow: rgba(99,102,241,0.25);
    --success: #22c55e;
    --warning: #f59e0b;
    --danger: #ef4444;
    --danger-hover: #dc2626;
    --gradient-1: linear-gradient(135deg, #6366f1 0%, #8b5cf6 50%, #a855f7 100%);
    --gradient-2: linear-gradient(135deg, #0a0e1a 0%, #1a1040 100%);
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --shadow-sm: 0 2px 8px rgba(0,0,0,0.3);
    --shadow-md: 0 4px 20px rgba(0,0,0,0.4);
    --shadow-lg: 0 8px 40px rgba(0,0,0,0.5);
    --shadow-glow: 0 0 30px var(--accent-glow);
    --transition: all 0.3s cubic-bezier(0.4,0,0.2,1);
    --font: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
}

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

html { font-size: 16px; scroll-behavior: smooth; }

body {
    font-family: var(--font);
    background: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

a { color: var(--accent); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--accent-hover); }

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

/* ---- Buttons ---- */
.btn {
    display: inline-flex; align-items: center; justify-content: center; gap: 8px;
    padding: 12px 24px; border: none; border-radius: var(--radius-md);
    font-family: var(--font); font-size: 0.95rem; font-weight: 600;
    cursor: pointer; transition: var(--transition); position: relative; overflow: hidden;
}
.btn-primary {
    background: var(--gradient-1); color: #fff;
    box-shadow: var(--shadow-glow);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 0 40px var(--accent-glow); }
.btn-secondary {
    background: var(--bg-card); color: var(--text-primary);
    border: 1px solid var(--border-color);
}
.btn-secondary:hover { border-color: var(--accent); background: var(--bg-card-hover); }
.btn-danger { background: var(--danger); color: #fff; }
.btn-danger:hover { background: var(--danger-hover); transform: translateY(-2px); }
.btn-sm { padding: 8px 16px; font-size: 0.85rem; border-radius: var(--radius-sm); }
.btn-icon { width: 36px; height: 36px; padding: 0; border-radius: var(--radius-sm); }
.btn:disabled { opacity: 0.5; cursor: not-allowed; transform: none !important; }

/* ---- Inputs ---- */
.form-group { margin-bottom: 20px; }
.form-label {
    display: block; margin-bottom: 8px; font-size: 0.875rem;
    font-weight: 500; color: var(--text-secondary);
}
.form-input, .form-select, .form-textarea {
    width: 100%; padding: 12px 16px; background: var(--bg-input);
    border: 1px solid var(--border-color); border-radius: var(--radius-md);
    color: var(--text-primary); font-family: var(--font); font-size: 0.95rem;
    transition: var(--transition); outline: none;
}
.form-input:focus, .form-select:focus, .form-textarea:focus {
    border-color: var(--border-focus); box-shadow: 0 0 0 3px var(--accent-glow);
}
.form-input::placeholder { color: var(--text-muted); }
.form-select { cursor: pointer; appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%2394a3b8' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat; background-position: right 16px center;
}
.form-textarea { resize: vertical; min-height: 100px; }

/* ---- Cards ---- */
.card {
    background: var(--bg-card); border: 1px solid var(--border-color);
    border-radius: var(--radius-lg); padding: 24px; transition: var(--transition);
}
.card:hover { border-color: rgba(99,102,241,0.3); }

/* ---- Student Page ---- */
.student-container {
    display: flex; align-items: center; justify-content: center;
    min-height: 100vh; padding: 20px;
    background: var(--gradient-2);
    position: relative; overflow: hidden;
}
.student-container::before {
    content: ''; position: absolute; width: 500px; height: 500px;
    background: radial-gradient(circle, var(--accent-glow) 0%, transparent 70%);
    top: -150px; right: -150px; border-radius: 50%; animation: pulse-glow 4s ease-in-out infinite;
}
.student-container::after {
    content: ''; position: absolute; width: 400px; height: 400px;
    background: radial-gradient(circle, rgba(139,92,246,0.15) 0%, transparent 70%);
    bottom: -100px; left: -100px; border-radius: 50%; animation: pulse-glow 5s ease-in-out infinite reverse;
}
.student-card {
    background: rgba(26,32,53,0.8); backdrop-filter: blur(20px);
    border: 1px solid var(--border-color); border-radius: var(--radius-xl);
    padding: 48px 40px; width: 100%; max-width: 440px;
    text-align: center; position: relative; z-index: 1;
    box-shadow: var(--shadow-lg); animation: fadeInUp 0.6s ease-out;
}
.student-logo { font-size: 3rem; margin-bottom: 8px; }
.school-logo-img { width: 100px; height: auto; display: inline-block; filter: drop-shadow(0 0 20px rgba(99,102,241,0.3)); animation: fadeInUp 0.5s ease-out; }
.student-school {
    color: var(--text-secondary); font-size: 0.85rem; font-weight: 500;
    margin-bottom: 8px; letter-spacing: 0.5px;
}
.student-title {
    font-size: 1.75rem; font-weight: 800; letter-spacing: 3px;
    background: var(--gradient-1); -webkit-background-clip: text;
    -webkit-text-fill-color: transparent; background-clip: text; margin-bottom: 8px;
}
.student-subtitle { color: var(--text-muted); font-size: 0.9rem; margin-bottom: 36px; }
.token-input {
    width: 100%; padding: 16px 20px; background: var(--bg-input);
    border: 2px solid var(--border-color); border-radius: var(--radius-md);
    color: var(--text-primary); font-family: var(--font); font-size: 1.1rem;
    font-weight: 600; text-align: center; letter-spacing: 3px;
    text-transform: uppercase; outline: none; transition: var(--transition);
}
.token-input:focus { border-color: var(--accent); box-shadow: var(--shadow-glow); }
.token-input::placeholder { letter-spacing: 1px; text-transform: none; font-weight: 400; }
.btn-mulai {
    width: 100%; padding: 16px; margin-top: 20px; font-size: 1.1rem;
    font-weight: 700; letter-spacing: 2px;
}
.error-msg {
    margin-top: 16px; padding: 12px; border-radius: var(--radius-sm);
    background: rgba(239,68,68,0.1); border: 1px solid rgba(239,68,68,0.3);
    color: var(--danger); font-size: 0.875rem; display: none;
}
.error-msg.show { display: block; animation: shake 0.4s ease-in-out; }
.loading-spinner {
    width: 20px; height: 20px; border: 2px solid rgba(255,255,255,0.3);
    border-top-color: #fff; border-radius: 50%; animation: spin 0.6s linear infinite;
    display: inline-block;
}

/* ---- Finish Page ---- */
.finish-container { display: flex; align-items: center; justify-content: center; min-height: 100vh; padding: 20px; background: var(--gradient-2); }
.finish-card { text-align: center; max-width: 500px; padding: 48px; }
.finish-icon { font-size: 4rem; margin-bottom: 16px; }
.finish-title { font-size: 1.5rem; font-weight: 700; margin-bottom: 12px; }
.finish-msg { color: var(--text-secondary); line-height: 1.8; }

/* ---- Modal ---- */
.modal-overlay {
    position: fixed; inset: 0; background: rgba(0,0,0,0.7); backdrop-filter: blur(4px);
    display: flex; align-items: center; justify-content: center; z-index: 10000;
    opacity: 0; visibility: hidden; transition: var(--transition);
}
.modal-overlay.active { opacity: 1; visibility: visible; }
.modal {
    background: var(--bg-card); border: 1px solid var(--border-color);
    border-radius: var(--radius-lg); padding: 32px; max-width: 420px; width: 90%;
    text-align: center; transform: scale(0.9); transition: var(--transition);
}
.modal-overlay.active .modal { transform: scale(1); }
.modal-icon { font-size: 3rem; margin-bottom: 12px; }
.modal-title { font-size: 1.2rem; font-weight: 700; margin-bottom: 8px; }
.modal-text { color: var(--text-secondary); font-size: 0.9rem; margin-bottom: 24px; }
.modal-actions { display: flex; gap: 12px; justify-content: center; }

/* ---- Table ---- */
.data-table { width: 100%; border-collapse: collapse; }
.data-table th {
    text-align: left; padding: 12px 16px; font-size: 0.8rem;
    font-weight: 600; color: var(--text-muted); text-transform: uppercase;
    letter-spacing: 1px; border-bottom: 1px solid var(--border-color);
}
.data-table td {
    padding: 14px 16px; border-bottom: 1px solid rgba(42,53,80,0.5);
    font-size: 0.9rem; color: var(--text-secondary);
}
.data-table tr:hover td { background: rgba(99,102,241,0.05); }

/* ---- Status Badge ---- */
.badge {
    display: inline-flex; align-items: center; padding: 4px 12px;
    border-radius: 20px; font-size: 0.75rem; font-weight: 600;
}
.badge-active { background: rgba(34,197,94,0.15); color: var(--success); }
.badge-inactive { background: rgba(239,68,68,0.15); color: var(--danger); }

/* ---- Toast ---- */
.toast-container { position: fixed; top: 20px; right: 20px; z-index: 11000; display: flex; flex-direction: column; gap: 8px; }
.toast {
    padding: 14px 20px; border-radius: var(--radius-md); font-size: 0.9rem;
    font-weight: 500; animation: slideIn 0.3s ease-out; min-width: 280px;
    box-shadow: var(--shadow-md);
}
.toast-success { background: rgba(34,197,94,0.9); color: #fff; }
.toast-error { background: rgba(239,68,68,0.9); color: #fff; }
.toast-warning { background: rgba(245,158,11,0.9); color: #fff; }

/* ---- Animations ---- */
@keyframes fadeInUp { from { opacity: 0; transform: translateY(30px); } to { opacity: 1; transform: translateY(0); } }
@keyframes shake { 0%,100% { transform: translateX(0); } 25% { transform: translateX(-8px); } 75% { transform: translateX(8px); } }
@keyframes spin { to { transform: rotate(360deg); } }
@keyframes pulse-glow { 0%,100% { opacity: 0.5; transform: scale(1); } 50% { opacity: 1; transform: scale(1.1); } }
@keyframes slideIn { from { opacity: 0; transform: translateX(40px); } to { opacity: 1; transform: translateX(0); } }

/* ---- Utility ---- */
.hidden { display: none !important; }
.text-center { text-align: center; }
.mt-1 { margin-top: 8px; } .mt-2 { margin-top: 16px; } .mt-3 { margin-top: 24px; }
.mb-1 { margin-bottom: 8px; } .mb-2 { margin-bottom: 16px; } .mb-3 { margin-bottom: 24px; }
.flex { display: flex; } .flex-center { display: flex; align-items: center; justify-content: center; }
.gap-1 { gap: 8px; } .gap-2 { gap: 16px; }