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

:root {
    --primary-color: #4F46E5;
    /* Indigo 600 */
    --primary-hover: #4338CA;
    /* Indigo 700 */
    --secondary-color: #64748B;
    /* Slate 500 */
    --background-color: #F8FAFC;
    /* Slate 50 */
    --surface-color: #FFFFFF;
    --text-color: #1E293B;
    /* Slate 800 */
    --text-muted: #64748B;
    --border-color: #E2E8F0;
    /* Slate 200 */
    --success-color: #10B981;
    --danger-color: #EF4444;
    --warning-color: #F59E0B;
    --radius: 0.5rem;
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
}

.theme-dark {
    --primary-color: #60a5fa;
    /* Lighter blue for dark mode */
    --primary-hover: #3b82f6;
    --secondary-color: #9ca3af;
    --background-color: #111827;
    /* Very dark gray */
    --surface-color: #1f2937;
    /* Dark gray for cards/sidebar */
    --text-color: #f3f4f6;
    /* Light gray text */
    --text-muted: #9ca3af;
    --border-color: #374151;
    --success-color: #34d399;
    --error-color: #f87171;
    --card-shadow: 0 1px 3px rgba(0, 0, 0, 0.5);
}

body {
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    background-color: var(--background-color);
    color: var(--text-color);
    margin: 0;
    line-height: 1.6;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

/* Typography */
h1,
h2,
h3,
h4,
h5,
h6 {
    color: var(--text-color);
    font-weight: 600;
    margin-top: 0;
}

h2 {
    font-size: 1.875rem;
}

h3 {
    font-size: 1.5rem;
}

a {
    color: var(--primary-color);
    text-decoration: none;
    transition: color 0.2s;
}

a:hover {
    color: var(--primary-hover);
}

/* Layout */
.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 2rem 1rem;
    width: 100%;
    box-sizing: border-box;
    flex: 1;
}

/* Layout Structure */
body {
    overflow-x: hidden;
    background-color: #F1F5F9;
}

/* Top Bar */
.topbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 64px;
    background-color: var(--surface-color);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 1.5rem;
    box-sizing: border-box;
    z-index: 60;
    box-shadow: var(--shadow-sm);
}

.topbar-left .brand {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--primary-color);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 10px;
    /* Space between logo and text */
    padding: 5px 0;
}

.topbar-right {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.user-menu {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.user-role {
    font-weight: 600;
    color: var(--text-color);
    background: #F1F5F9;
    padding: 0.25rem 0.75rem;
    border-radius: 99px;
    font-size: 0.875rem;
}

.btn-logout {
    color: var(--danger-color);
    font-weight: 500;
    font-size: 0.9rem;
}

.btn-logout:hover {
    color: #DC2626;
}

.auth-menu {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.auth-menu a {
    color: var(--text-color);
    font-weight: 500;
}

.auth-menu .btn-auth {
    background-color: var(--primary-color);
    color: white;
    padding: 0.5rem 1rem;
    border-radius: var(--radius);
}

.auth-menu .btn-auth:hover {
    background-color: var(--primary-hover);
}

.layout-wrapper {
    display: flex;
    min-height: 100vh;
    width: 100%;
}

/* Sidebar */
.sidebar {
    width: 260px;
    background-color: var(--surface-color);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    position: fixed;
    height: calc(100vh - 64px);
    top: 64px;
    left: 0;
    z-index: 50;
    transition: transform 0.3s;
}

.sidebar-header {
    padding: 1.5rem;
    border-bottom: 1px solid var(--border-color);
}

.brand {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--primary-color);
    color: var(--primary-color);
    display: block;
}

.sidebar-nav {
    padding: 1rem;
    flex-grow: 1;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.sidebar-nav .nav-link {
    display: flex;
    align-items: center;
    padding: 0.75rem 1rem;
    color: var(--text-color);
    text-decoration: none;
    border-radius: var(--radius);
    transition: all 0.2s;
    font-weight: 500;
}

.sidebar-nav .nav-link i {
    width: 20px;
    text-align: center;
    margin-right: 12px;
    font-size: 1.1em;
    color: var(--secondary-color);
    transition: color 0.2s;
}

.sidebar-nav .nav-link:hover i,
.sidebar-nav .nav-link.active i {
    color: var(--primary-color);
}

.nav-link {
    display: flex;
    align-items: center;
    padding: 0.75rem 1rem;
    color: var(--secondary-color);
    text-decoration: none;
    border-radius: var(--radius);
    transition: all 0.2s;
    font-weight: 500;
    font-size: 0.95rem;
}

.nav-link:hover {
    background-color: #F1F5F9;
    color: var(--primary-color);
}

.nav-link.active {
    background-color: #EEF2FF;
    color: var(--primary-color);
    font-weight: 600;
}

.nav-divider {
    height: 1px;
    background-color: var(--border-color);
    margin: 0.5rem 0;
}

.nav-link.logout {
    color: var(--danger-color);
}

.nav-link.logout:hover {
    background-color: #FEF2F2;
}

.nav-link.btn-nav {
    background-color: var(--primary-color);
    color: white;
    justify-content: center;
    margin-top: 1rem;
}

.nav-link.btn-nav:hover {
    background-color: var(--primary-hover);
}

.user-info {
    padding: 1rem;
    border-top: 1px solid var(--border-color);
    background-color: #F8FAFC;
    font-size: 0.875rem;
}

.user-info small {
    display: block;
    color: var(--text-muted);
}

.user-info strong {
    color: var(--text-color);
    text-transform: capitalize;
}

/* Sidebar Accordion */
.nav-accordion-toggle {
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    background: none;
    border: none;
    width: 100%;
    text-align: left;
    font-family: inherit;
    font-size: 0.95rem;
}

.nav-accordion-toggle:hover {
    background-color: #F1F5F9;
    color: var(--primary-color);
}

.nav-accordion-icon {
    transition: transform 0.2s;
}

.nav-accordion-toggle.active .nav-accordion-icon {
    transform: rotate(180deg);
}

.nav-sub-menu {
    display: none;
    padding-left: 1.5rem;
    margin-top: 0.25rem;
    flex-direction: column;
    gap: 0.25rem;
    border-left: 2px solid var(--border-color);
    margin-left: 1rem;
}

.nav-sub-menu.show {
    display: flex;
}

.nav-sub-menu .nav-link {
    font-size: 0.85rem;
    padding: 0.5rem 1rem;
}

/* Main Content */
.main-content {
    flex-grow: 1;
    margin-left: 260px;
    margin-top: 64px;
    padding: 2rem;
    width: calc(100% - 260px);
    background-color: var(--background-color);
    min-height: calc(100vh - 64px);
    box-sizing: border-box;
}

/* Responsive */
@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
        box-shadow: 2px 0 8px rgba(0, 0, 0, 0.1);
    }

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

    .main-content {
        margin-left: 0;
        width: 100%;
        padding: 1rem;
    }
}

/* Cards */
.card,
.auth-container {
    background: var(--surface-color);
    padding: 2rem;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    border: 1px solid var(--border-color);
    margin-bottom: 2rem;
}

.auth-container {
    max-width: 400px;
    margin: 4rem auto;
}

/* Forms */
.form-group {
    margin-bottom: 1.5rem;
}

label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--text-color);
}

.form-control {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    font-size: 1rem;
    font-family: inherit;
    transition: border-color 0.2s, box-shadow 0.2s;
    box-sizing: border-box;
}

.form-control:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
}

/* Buttons */
.btn {
    display: inline-flex;
    justify-content: center;
    align-items: center;
    padding: 0.75rem 1.5rem;
    background-color: var(--primary-color);
    color: white;
    border: none;
    border-radius: var(--radius);
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
    width: auto;
}

.btn:hover {
    background-color: var(--primary-hover);
    transform: translateY(-1px);
}

.btn-secondary {
    background-color: var(--secondary-color);
}

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

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

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

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

.btn-danger:hover {
    background-color: #DC2626;
}

.btn-block {
    width: 100%;
}

/* Alerts */
.alert {
    padding: 1rem;
    margin-bottom: 1.5rem;
    border-radius: var(--radius);
    font-weight: 500;
}

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

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

.text-danger {
    color: var(--danger-color);
    font-size: 0.875rem;
    margin-top: 0.25rem;
    display: block;
}

/* Tables */
table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: 1rem;
}

th,
td {
    padding: 0.75rem 1rem;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

th {
    background-color: var(--background-color);
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    font-size: 0.875rem;
    letter-spacing: 0.05em;
}

/* Footer */
footer {
    text-align: center;
    padding: 2rem;
    background-color: var(--surface-color);
    border-top: 1px solid var(--border-color);
    color: var(--text-muted);
    font-size: 0.875rem;
    margin-top: auto;
}

/* Utilities */
.text-center {
    text-align: center;
}

.mt-4 {
    margin-top: 1.5rem;
}

.mb-4 {
    margin-bottom: 1.5rem;
}

.flex-grid {
    display: flex;
    gap: 1.5rem;
    flex-wrap: wrap;
}

.col {
    flex: 1;
    min-width: 250px;
}

/* Modal Popup */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
    animation: fadeIn 0.3s;
}

.modal-content {
    background: white;
    padding: 0;
    border-radius: var(--radius);
    width: 90%;
    max-width: 500px;
    box-shadow: var(--shadow-lg);
    animation: slideUp 0.3s;
    overflow: hidden;
}

.modal-header {
    padding: 1rem 1.5rem;
    background: var(--background-color);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-header h3 {
    margin: 0;
    font-size: 1.25rem;
    color: var(--primary-color);
}

.close-btn {
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: #666;
}

.close-btn:hover {
    color: #333;
}

.modal-body {
    padding: 1.5rem;
    font-size: 1rem;
    color: var(--text-color);
    line-height: 1.6;
}

.modal-footer {
    padding: 1rem 1.5rem;
    background: var(--background-color);
    text-align: right;
    border-top: 1px solid var(--border-color);
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}

@keyframes slideUp {
    from {
        transform: translateY(20px);
        opacity: 0;
    }

    to {
        transform: translateY(0);
        opacity: 1;
    }
}