/* ==========================================================================
   SPENTALOKA - SISTEM RFID PRESENSI PELAJARAN DAN IZIN SISWA
   Design System & Modern Styling (Vanilla CSS)
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@300;400;500;600;700;800&family=JetBrains+Mono:wght@400;500;700&display=swap');

:root {
    --font-main: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-mono: 'JetBrains Mono', monospace;

    /* Primary Palettes */
    --primary-50: #eef2ff;
    --primary-100: #e0e7ff;
    --primary-200: #c7d2fe;
    --primary-500: #6366f1;
    --primary-600: #4f46e5;
    --primary-700: #4338ca;
    --primary-800: #3730a3;
    --primary-900: #312e81;

    /* Accents & Status */
    --accent-teal: #0d9488;
    --accent-teal-light: #ccfbf1;
    --success-500: #10b981;
    --success-light: #d1fae5;
    --warning-500: #f59e0b;
    --warning-light: #fef3c7;
    --danger-500: #ef4444;
    --danger-light: #fee2e2;
    --info-500: #3b82f6;
    --info-light: #dbeafe;

    /* Neutrals */
    --bg-dark: #0f172a;
    --bg-surface: #1e293b;
    --bg-surface-elevated: #334155;
    --bg-card: rgba(30, 41, 59, 0.85);
    --border-color: #334155;
    --border-light: rgba(255, 255, 255, 0.08);

    --text-main: #f8fafc;
    --text-muted: #94a3b8;
    --text-dim: #64748b;

    /* Shadows & Glass */
    --glass-bg: rgba(30, 41, 59, 0.7);
    --glass-border: 1px solid rgba(255, 255, 255, 0.12);
    --glass-shadow: 0 10px 30px rgba(0, 0, 0, 0.25);
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 18px;
    --radius-xl: 24px;
    --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
    font-family: var(--font-main);
    background-color: var(--bg-dark);
    color: var(--text-main);
    line-height: 1.5;
    min-height: 100vh;
    overflow-x: hidden;
}

/* Layout Structure */
.app-container {
    display: flex;
    min-height: 100vh;
}

/* Sidebar */
.sidebar {
    width: 270px;
    background: #111827;
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 0;
    bottom: 0;
    left: 0;
    z-index: 50;
    transition: transform var(--transition-fast);
}

.sidebar-brand {
    padding: 24px 20px;
    display: flex;
    align-items: center;
    gap: 12px;
    border-bottom: 1px solid var(--border-color);
}

.sidebar-logo-icon {
    width: 42px;
    height: 42px;
    border-radius: 12px;
    background: linear-gradient(135deg, var(--primary-600), #8b5cf6);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    font-size: 20px;
    color: #fff;
    box-shadow: 0 4px 12px rgba(79, 70, 229, 0.4);
}

.sidebar-brand-text h2 {
    font-size: 16px;
    font-weight: 700;
    color: #fff;
    letter-spacing: -0.3px;
}

.sidebar-brand-text p {
    font-size: 11px;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.sidebar-nav {
    flex: 1;
    overflow-y: auto;
    padding: 16px 12px;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.nav-header {
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    color: var(--text-dim);
    padding: 14px 12px 6px;
    letter-spacing: 0.8px;
}

.nav-link {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 14px;
    border-radius: var(--radius-sm);
    color: var(--text-muted);
    text-decoration: none;
    font-size: 13.5px;
    font-weight: 500;
    transition: all var(--transition-fast);
}

.nav-link:hover {
    color: #fff;
    background: rgba(255, 255, 255, 0.05);
}

.nav-link.active {
    color: #fff;
    background: linear-gradient(135deg, var(--primary-600), var(--primary-700));
    font-weight: 600;
    box-shadow: 0 4px 12px rgba(79, 70, 229, 0.3);
}

.nav-link svg {
    width: 18px;
    height: 18px;
    stroke-width: 2;
    flex-shrink: 0;
}

.sidebar-footer {
    padding: 16px;
    border-top: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.admin-badge {
    display: flex;
    align-items: center;
    gap: 10px;
}

.admin-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: var(--bg-surface-elevated);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary-200);
    font-weight: 700;
    font-size: 14px;
}

/* Main Content Area */
.main-wrapper {
    flex: 1;
    margin-left: 270px;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.topbar {
    height: 70px;
    background: rgba(17, 24, 39, 0.85);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-color);
    padding: 0 28px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: sticky;
    top: 0;
    z-index: 40;
}

.topbar-left {
    display: flex;
    align-items: center;
    gap: 16px;
}

.hamburger-btn {
    display: none;
    background: none;
    border: none;
    color: var(--text-main);
    font-size: 22px;
    cursor: pointer;
}

.topbar-right {
    display: flex;
    align-items: center;
    gap: 16px;
}

.content-area {
    padding: 28px;
    flex: 1;
}

/* Common Components & Cards */
.card {
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 24px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
    margin-bottom: 24px;
}

.card-header-flex {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 20px;
    gap: 16px;
    flex-wrap: wrap;
}

.card-title {
    font-size: 17px;
    font-weight: 700;
    color: #fff;
    display: flex;
    align-items: center;
    gap: 10px;
}

/* Stat Grid */
.stat-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 18px;
    margin-bottom: 24px;
}

.stat-card {
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 20px;
    position: relative;
    overflow: hidden;
    transition: transform var(--transition-fast);
}

.stat-card:hover {
    transform: translateY(-2px);
}

.stat-card-title {
    font-size: 12px;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 8px;
}

.stat-card-value {
    font-size: 28px;
    font-weight: 800;
    color: #fff;
    line-height: 1.1;
}

.stat-card-icon {
    position: absolute;
    right: 16px;
    top: 18px;
    width: 44px;
    height: 44px;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0.85;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 9px 18px;
    font-size: 13.5px;
    font-weight: 600;
    border-radius: var(--radius-sm);
    border: none;
    cursor: pointer;
    text-decoration: none;
    transition: all var(--transition-fast);
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-600), var(--primary-700));
    color: #fff;
    box-shadow: 0 4px 12px rgba(79, 70, 229, 0.35);
}

.btn-primary:hover {
    background: linear-gradient(135deg, var(--primary-500), var(--primary-600));
    box-shadow: 0 6px 16px rgba(79, 70, 229, 0.45);
}

.btn-secondary {
    background: var(--bg-surface-elevated);
    color: var(--text-main);
    border: 1px solid var(--border-color);
}

.btn-secondary:hover {
    background: #475569;
    color: #fff;
}

.btn-success {
    background: var(--success-500);
    color: #fff;
}

.btn-success:hover {
    background: #059669;
}

.btn-danger {
    background: var(--danger-500);
    color: #fff;
}

.btn-danger:hover {
    background: #dc2626;
}

.btn-warning {
    background: var(--warning-500);
    color: #000;
    font-weight: 700;
}

.btn-warning:hover {
    background: #d97706;
    color: #fff;
}

.btn-sm {
    padding: 6px 12px;
    font-size: 12px;
}

.btn-lg {
    padding: 14px 28px;
    font-size: 16px;
    border-radius: var(--radius-md);
}

/* Tables */
.table-responsive {
    width: 100%;
    overflow-x: auto;
}

.data-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 13.5px;
    text-align: left;
}

.data-table th {
    background: rgba(15, 23, 42, 0.6);
    color: var(--text-muted);
    padding: 12px 16px;
    font-weight: 600;
    border-bottom: 1px solid var(--border-color);
    text-transform: uppercase;
    font-size: 11.5px;
    letter-spacing: 0.5px;
}

.data-table td {
    padding: 13px 16px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    color: var(--text-main);
    vertical-align: middle;
}

.data-table tr:hover td {
    background: rgba(255, 255, 255, 0.02);
}

/* Badges */
.badge {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    padding: 4px 10px;
    border-radius: 9999px;
    font-size: 11.5px;
    font-weight: 700;
}

.badge-success { background: rgba(16, 185, 129, 0.18); color: #34d399; border: 1px solid rgba(16, 185, 129, 0.3); }
.badge-warning { background: rgba(245, 158, 11, 0.18); color: #fbbf24; border: 1px solid rgba(245, 158, 11, 0.3); }
.badge-danger { background: rgba(239, 68, 68, 0.18); color: #f87171; border: 1px solid rgba(239, 68, 68, 0.3); }
.badge-info { background: rgba(59, 130, 246, 0.18); color: #60a5fa; border: 1px solid rgba(59, 130, 246, 0.3); }
.badge-secondary { background: rgba(148, 163, 184, 0.18); color: #cbd5e1; border: 1px solid rgba(148, 163, 184, 0.3); }

/* Forms */
.form-group {
    margin-bottom: 18px;
}

.form-label {
    display: block;
    font-size: 13px;
    font-weight: 600;
    color: var(--text-muted);
    margin-bottom: 6px;
}

.form-control, .form-select {
    width: 100%;
    padding: 10px 14px;
    background: #0f172a;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: #fff;
    font-size: 13.5px;
    font-family: inherit;
    transition: border-color var(--transition-fast);
}

.form-control:focus, .form-select:focus {
    outline: none;
    border-color: var(--primary-500);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.2);
}

.form-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 16px;
}

/* Modals */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.75);
    backdrop-filter: blur(6px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 100;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-fast);
}

.modal-overlay.active {
    opacity: 1;
    visibility: visible;
}

.modal-box {
    background: #1e293b;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    width: 90%;
    max-width: 540px;
    padding: 28px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
    transform: scale(0.95);
    transition: transform var(--transition-fast);
}

.modal-overlay.active .modal-box {
    transform: scale(1);
}

/* Scanner Tablet Dedicated Styles */
.scanner-fullscreen {
    min-height: 100vh;
    background: radial-gradient(circle at top, #1e1b4b 0%, #090d16 100%);
    display: flex;
    flex-direction: column;
    padding: 24px;
}

.scanner-topbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 24px;
}

.scanner-target-card {
    background: rgba(30, 41, 59, 0.6);
    border: 2px dashed rgba(99, 102, 241, 0.4);
    backdrop-filter: blur(16px);
    border-radius: var(--radius-xl);
    padding: 48px 32px;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    max-width: 680px;
    margin: 0 auto;
    width: 100%;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.4);
    transition: all 0.3s ease;
}

.scanner-target-card.pulse-scan {
    border-color: var(--primary-500);
    box-shadow: 0 0 35px rgba(99, 102, 241, 0.6);
}

.scanner-icon-anim {
    width: 90px;
    height: 90px;
    border-radius: 50%;
    background: rgba(99, 102, 241, 0.15);
    border: 2px solid var(--primary-500);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary-200);
    margin-bottom: 20px;
    animation: floating 3s ease-in-out infinite;
}

@keyframes floating {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-8px); }
}

@keyframes pulse-anim {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.4; }
}

.animate-pulse {
    animation: pulse-anim 1.5s infinite;
}

/* Responsive Breakpoints */
@media (max-width: 992px) {
    .sidebar {
        transform: translateX(-100%);
    }

    .sidebar.open {
        transform: translateX(0);
    }

    .main-wrapper {
        margin-left: 0;
    }

    .hamburger-btn {
        display: block;
    }
}