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

:root {
    --primary: #6366F1;
    --primary-hover: #4F46E5;
    --primary-light: rgba(99, 102, 241, 0.08);
    --primary-glow: rgba(99, 102, 241, 0.15);
    --secondary: #10B981;
    --accent: #F59E0B;
    --background: #F8FAFC;
    --surface: #FFFFFF;
    --surface-hover: #F1F5F9;
    --text-main: #0F172A;
    --text-secondary: #334155;
    --text-muted: #94A3B8;
    --border: #E2E8F0;
    --border-hover: #CBD5E1;
    --danger: #EF4444;
    --danger-light: rgba(239, 68, 68, 0.08);
    --warning: #F59E0B;
    --warning-light: rgba(245, 158, 11, 0.08);
    --success: #10B981;
    --success-light: rgba(16, 185, 129, 0.08);
    --info-light: rgba(59, 130, 246, 0.08);
    --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.04);
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.07), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -4px rgba(0, 0, 0, 0.04);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.08), 0 8px 10px -6px rgba(0, 0, 0, 0.04);
    --shadow-primary: 0 4px 14px rgba(99, 102, 241, 0.25);
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.25rem;
    --transition: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

/* === Reset & Base === */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    overflow-y: scroll;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background-color: var(--background);
    color: var(--text-main);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

a {
    text-decoration: none;
    color: inherit;
}

/* === Container === */
.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* === Glass Panel === */
.glass-panel {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-sm);
    padding: 2rem;
    transition: box-shadow var(--transition), border-color var(--transition);
}

.glass-panel:hover {
    box-shadow: var(--shadow-md);
}

/* === Buttons === */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.625rem 1.25rem;
    font-size: 0.875rem;
    font-weight: 500;
    font-family: inherit;
    border-radius: var(--radius-lg);
    border: 1.5px solid transparent;
    cursor: pointer;
    transition: all var(--transition);
    white-space: nowrap;
    line-height: 1.4;
}

.btn:active {
    transform: scale(0.97);
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-hover) 100%);
    color: white;
    border-color: var(--primary);
    box-shadow: var(--shadow-xs);
}

.btn-primary:hover {
    background: linear-gradient(135deg, var(--primary-hover) 0%, #3730A3 100%);
    box-shadow: var(--shadow-primary);
    transform: translateY(-1px);
}

.btn-danger {
    background: var(--danger);
    color: white;
    border-color: var(--danger);
}

.btn-danger:hover {
    background: #DC2626;
    box-shadow: 0 4px 14px rgba(239, 68, 68, 0.3);
    transform: translateY(-1px);
}

.btn-outline {
    background: transparent;
    border: 1.5px solid var(--border);
    color: var(--text-secondary);
}

.btn-outline:hover {
    background: var(--surface-hover);
    border-color: var(--border-hover);
}

.btn-ghost {
    background: transparent;
    border: 1.5px solid transparent;
    color: var(--text-muted);
    padding: 0.5rem;
}

.btn-ghost:hover {
    background: var(--surface-hover);
    color: var(--text-main);
}

.btn-icon {
    padding: 0.5rem;
    border-radius: var(--radius-md);
}

.btn-sm {
    padding: 0.375rem 0.75rem;
    font-size: 0.8rem;
}

/* === Forms === */
.form-group {
    margin-bottom: 1.25rem;
}

.form-label {
    display: block;
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
    letter-spacing: 0.01em;
}

.form-control {
    width: 100%;
    padding: 0.625rem 0.875rem;
    font-size: 0.875rem;
    font-family: inherit;
    border: 1.5px solid var(--border);
    border-radius: var(--radius-lg);
    background-color: var(--surface);
    color: var(--text-main);
    transition: all var(--transition);
}

.form-control::placeholder {
    color: var(--text-muted);
}

.form-control:hover {
    border-color: var(--border-hover);
}

.form-control:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px var(--primary-glow);
}

/* === Navbar === */
.navbar {
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
    padding: 0.625rem 0;
    position: sticky;
    top: 0;
    z-index: 100;
}

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

.navbar-brand {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--primary);
    display: flex;
    align-items: center;
    gap: 0.625rem;
    letter-spacing: -0.01em;
}

.navbar-brand svg {
    opacity: 0.9;
}

.navbar-end {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.navbar-user {
    font-size: 0.8125rem;
    font-weight: 500;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.navbar-user-avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary-light), var(--primary-glow));
    color: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 0.75rem;
}

/* === Dashboard Layout === */
.dashboard-header {
    margin-top: 2.5rem;
    margin-bottom: 2rem;
}

.dashboard-title {
    font-size: 1.75rem;
    font-weight: 800;
    letter-spacing: -0.03em;
    color: var(--text-main);
}

.dashboard-subtitle {
    color: var(--text-muted);
    margin-top: 0.375rem;
    font-size: 0.9375rem;
}

.grid {
    display: grid;
    gap: 1.5rem;
}

.grid-cols-3 {
    grid-template-columns: repeat(3, 1fr);
}

@media (max-width: 768px) {
    .grid-cols-3 {
        grid-template-columns: 1fr;
    }
    .container {
        padding: 0 1rem;
    }
}

/* === Category Card === */
.category-card {
    background: var(--surface);
    border-radius: var(--radius-2xl);
    padding: 1.75rem;
    box-shadow: var(--shadow-sm);
    border: 1.5px solid var(--border);
    display: flex;
    flex-direction: column;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.category-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--primary), #818CF8);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.category-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
    border-color: var(--primary);
}

.category-card:hover::before {
    opacity: 1;
}

.category-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-lg);
    background: linear-gradient(135deg, var(--primary-light), var(--primary-glow));
    color: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.25rem;
}

.category-title {
    font-size: 1.125rem;
    font-weight: 700;
    margin-bottom: 0.375rem;
    color: var(--text-main);
}

.category-desc {
    color: var(--text-muted);
    font-size: 0.8125rem;
    margin-bottom: 1.25rem;
    flex-grow: 1;
    line-height: 1.5;
}

.category-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-top: 1px solid var(--border);
    padding-top: 1rem;
    margin-top: 0.25rem;
}

/* === Tables === */
.table-wrapper {
    background: var(--surface);
    border-radius: var(--radius-2xl);
    border: 1px solid var(--border);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
}

.table-header {
    padding: 1.25rem 1.5rem;
    border-bottom: 1px solid var(--border);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.table-title {
    font-size: 1rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

table {
    width: 100%;
    border-collapse: collapse;
}

th, td {
    padding: 0.875rem 1.5rem;
    text-align: left;
    border-bottom: 1px solid var(--border);
}

th {
    background: var(--surface-hover);
    font-size: 0.6875rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--text-muted);
    white-space: nowrap;
}

td {
    font-size: 0.8125rem;
    vertical-align: middle;
}

tbody tr {
    transition: background var(--transition);
}

tbody tr:hover {
    background: var(--primary-light);
}

tbody tr:last-child td {
    border-bottom: none;
}

/* === Badge === */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 0.25rem 0.625rem;
    border-radius: 999px;
    font-size: 0.6875rem;
    font-weight: 600;
    letter-spacing: 0.02em;
}

.badge-success {
    background: var(--success-light);
    color: var(--success);
}

.badge-primary {
    background: var(--primary-light);
    color: var(--primary);
}

.badge-warning {
    background: var(--warning-light);
    color: var(--warning);
}

/* === Action Buttons in Table === */
.action-group {
    display: flex;
    gap: 0.375rem;
    justify-content: flex-end;
    align-items: center;
}

.action-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.25rem;
    padding: 0.375rem 0.625rem;
    font-size: 0.6875rem;
    font-weight: 600;
    font-family: inherit;
    border-radius: var(--radius-md);
    border: 1.5px solid var(--border);
    background: var(--surface);
    color: var(--text-secondary);
    cursor: pointer;
    transition: all var(--transition);
    white-space: nowrap;
}

.action-btn:hover {
    background: var(--surface-hover);
    border-color: var(--border-hover);
}

.action-btn.edit {
    color: var(--warning);
    border-color: rgba(245, 158, 11, 0.3);
}

.action-btn.edit:hover {
    background: var(--warning-light);
    border-color: var(--warning);
}

.action-btn.delete {
    color: var(--danger);
    border-color: rgba(239, 68, 68, 0.3);
}

.action-btn.delete:hover {
    background: var(--danger-light);
    border-color: var(--danger);
}

.action-btn.print {
    color: var(--primary);
    border-color: rgba(99, 102, 241, 0.3);
}

.action-btn.print:hover {
    background: var(--primary-light);
    border-color: var(--primary);
}

/* === Modal === */
.modal-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(15, 23, 42, 0.5);
    backdrop-filter: blur(4px);
    z-index: 1000;
    align-items: center;
    justify-content: center;
    padding: 1rem;
    animation: modalFadeIn 0.2s ease;
}

.modal-overlay.active {
    display: flex;
}

.modal-content {
    background: var(--surface);
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-xl);
    width: 100%;
    max-width: 480px;
    padding: 2rem;
    animation: modalSlideUp 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
}

.modal-title {
    font-size: 1.125rem;
    font-weight: 700;
}

.modal-footer {
    display: flex;
    gap: 0.75rem;
    justify-content: flex-end;
    margin-top: 1.5rem;
}

/* === Toast Notification === */
.toast {
    position: fixed;
    top: 1.5rem;
    right: 1.5rem;
    z-index: 2000;
    padding: 1rem 1.5rem;
    border-radius: var(--radius-xl);
    font-size: 0.875rem;
    font-weight: 500;
    box-shadow: var(--shadow-lg);
    animation: toastSlideIn 0.4s cubic-bezier(0.4, 0, 0.2, 1), toastFadeOut 0.4s 3.5s ease forwards;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    max-width: 400px;
}

.toast-success {
    background: #ECFDF5;
    color: #065F46;
    border: 1px solid #A7F3D0;
}

.toast-error {
    background: #FEF2F2;
    color: #991B1B;
    border: 1px solid #FECACA;
}

/* === Info Box === */
.info-box {
    padding: 1rem 1.25rem;
    border-radius: var(--radius-lg);
    font-size: 0.8125rem;
    line-height: 1.6;
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
}

.info-box.info {
    background: var(--info-light);
    border: 1px solid rgba(59, 130, 246, 0.15);
    color: #1E40AF;
}

.info-box .info-icon {
    flex-shrink: 0;
    margin-top: 0.125rem;
}

/* === Back Link === */
.back-link {
    color: var(--text-muted);
    font-size: 0.8125rem;
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
    font-weight: 500;
    transition: color var(--transition);
    margin-bottom: 0.75rem;
}

.back-link:hover {
    color: var(--primary);
}

/* === Search Bar === */
.search-bar {
    display: flex;
    gap: 0.5rem;
    align-items: center;
}

.search-bar .form-control {
    min-width: 220px;
    padding: 0.5rem 0.875rem;
    font-size: 0.8125rem;
}

/* === Empty State === */
.empty-state {
    text-align: center;
    padding: 3rem 1rem;
}

.empty-state svg {
    color: var(--text-muted);
    opacity: 0.4;
    margin-bottom: 1rem;
}

.empty-state p {
    color: var(--text-muted);
    font-size: 0.875rem;
}

/* === Auth === */
.auth-wrapper {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #EEF2FF 0%, #E0E7FF 50%, #F5F3FF 100%);
    position: relative;
    overflow: hidden;
}

.auth-wrapper::before {
    content: '';
    position: absolute;
    width: 700px;
    height: 700px;
    background: radial-gradient(circle, rgba(99, 102, 241, 0.12) 0%, transparent 70%);
    top: -250px;
    left: -250px;
    border-radius: 50%;
}

.auth-wrapper::after {
    content: '';
    position: absolute;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(139, 92, 246, 0.08) 0%, transparent 70%);
    bottom: -200px;
    right: -200px;
    border-radius: 50%;
}

.auth-card {
    width: 100%;
    max-width: 420px;
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.6);
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-xl);
    padding: 2.5rem;
    position: relative;
    z-index: 10;
}

/* === Section Divider === */
.section-label {
    font-size: 0.6875rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--text-muted);
    margin-bottom: 1rem;
}

/* === Helper === */
.font-bold { font-weight: 700; }
.text-muted { color: var(--text-muted); }
.text-primary { color: var(--primary); }
.text-sm { font-size: 0.8125rem; }
.mt-2 { margin-top: 0.5rem; }
.mt-4 { margin-top: 1rem; }
.mb-4 { margin-bottom: 1rem; }

/* === Animations === */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(8px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes modalFadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes modalSlideUp {
    from { opacity: 0; transform: translateY(16px) scale(0.97); }
    to { opacity: 1; transform: translateY(0) scale(1); }
}

@keyframes toastSlideIn {
    from { opacity: 0; transform: translateX(100px); }
    to { opacity: 1; transform: translateX(0); }
}

@keyframes toastFadeOut {
    from { opacity: 1; }
    to { opacity: 0; transform: translateY(-10px); pointer-events: none; }
}

.animate-fade-in {
    animation: fadeIn 0.4s ease forwards;
}

/* === Print helpers (used in certificate templates) === */
@media print {
    .no-print { display: none !important; }
}