:root {
    --primary-color: #00a89d;
    --primary-dark: #008a80;
    --primary-light: #00c4b5;
    --text-dark: #1a1a1a;
    --text-gray: #555;
    --text-light: #888;
    --bg-light: #f8f9fa;
    --border-color: #e8ecef;
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.12);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.16);
    --shadow-primary: 0 4px 20px rgba(0, 168, 157, 0.25);
    --gradient-primary: linear-gradient(135deg, #00a89d 0%, #00c4b5 100%);
    --gradient-dark: linear-gradient(135deg, #1a1a1a 0%, #2d2d2d 100%);
    --bg-page: #ffffff;
    --muted-text: #6c757d;
    --card-bg: #ffffff;
    --navbar-bg: #00a89d;
    --navbar-text: #ffffff;
    --footer-bg: #00a89d;
    --sidebar-start: #00a89d;
    --sidebar-end: #008a80;
    --attention-bg: #fff3cd;
    --attention-border: #ffc107;
}

[data-theme="dark"] {
    --primary-color: #1ebdb0;
    --primary-dark: #19a899;
    --primary-light: #31e0d4;
    --text-dark: #e6eef0;
    --text-gray: #c0c6c8;
    --text-light: #9aa1a3;
    --bg-light: #0f1416;
    --bg-page: #071025;
    --card-bg: #0b1220;
    --border-color: rgba(255, 255, 255, 0.06);
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.4);
    --gradient-primary: linear-gradient(135deg, #1ebdb0 0%, #31e0d4 100%);
    --navbar-bg: linear-gradient(180deg, #071025 0%, #0b1220 100%);
    --navbar-text: #e6eef0;
    --footer-bg: linear-gradient(180deg, #071025 0%, #0b1220 100%);
    --sidebar-start: #062033;
    --sidebar-end: #071025;
    --attention-bg: #3b2b13;
    --attention-border: #b8860b;
}

html {
    scroll-behavior: smooth;
}

.page-header {
    background: var(--gradient-primary);
    color: #fff;
    padding: 100px 0 60px;
    margin-top: 0;
    margin-bottom: 60px;
    position: relative;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0, 168, 157, 0.2);
}

.page-header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 10% 20%, rgba(255, 255, 255, 0.1) 0%, transparent 40%),
        radial-gradient(circle at 90% 80%, rgba(255, 255, 255, 0.1) 0%, transparent 40%);
    pointer-events: none;
}

.page-header h1 {
    font-size: 3rem;
    font-weight: 800;
    margin-bottom: 15px;
    letter-spacing: -1px;
    text-shadow: 0 4px 12px rgba(0,0,0,0.1);
    position: relative;
    z-index: 1;
}

.page-header p {
    font-size: 1.15rem;
    color: rgba(255, 255, 255, 0.85);
    font-weight: 300;
    position: relative;
    z-index: 1;
}

.content-section {
    padding: 60px 0;
    position: relative;
}

.card-minimal {
    border: none;
    border-radius: 16px;
    margin-bottom: 30px;
    background: var(--card-bg);
    box-shadow: var(--shadow-sm);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    overflow: hidden;
    position: relative;
}

.card-minimal::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: var(--gradient-primary);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.card-minimal:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-4px);
}

.card-minimal:hover::before {
    transform: scaleX(1);
}

body {
    background-color: var(--bg-page);
    color: var(--text-dark);
}

.top-navbar {
    background: var(--navbar-bg);
    min-height: 60px;
    display: flex;
    align-items: center;
}

.top-navbar .navbar-brand {
    color: var(--navbar-text) !important;
    padding: 0;
    margin: 0 auto;
}

.secondary-nav {
    background: var(--navbar-bg);
}

.secondary-nav .nav-link {
    color: var(--navbar-text) !important;
}

.secondary-nav .dropdown-menu {
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
}

.secondary-nav .dropdown-item {
    color: var(--text-dark);
}

footer {
    background: var(--footer-bg);
    color: var(--navbar-text);
}

.btn-primary {
    background: var(--primary-color);
    border-color: transparent;
}

.btn-primary:hover {
    background: var(--primary-dark);
}

.table thead {
    background: linear-gradient(90deg, rgba(0, 0, 0, 0.04), rgba(0, 0, 0, 0.02));
}

.table thead th {
    color: var(--text-dark);
}

.admin-card {
    background: var(--card-bg);
}

.modal-header {
    background: var(--primary-color);
    color: #fff;
}

.sidebar {
    background: linear-gradient(180deg, var(--sidebar-start) 0%, var(--sidebar-end) 100%);
}

@media (prefers-color-scheme: dark) {

    .form-control,
    .form-select {
        border-color: rgba(255, 255, 255, 0.08);
    }
}

.text-muted {
    color: var(--text-light) !important;
}

.btn-custom {
    background: var(--gradient-primary);
    color: #fff;
    border: none;
    border-radius: 8px;
    padding: 12px 32px;
    font-weight: 600;
    letter-spacing: 0.5px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 4px 12px rgba(0, 168, 157, 0.3);
}

.btn-custom:hover {
    background: var(--primary-dark);
    color: #fff;
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 168, 157, 0.4);
}

.btn-custom:active {
    transform: translateY(0);
}

.form-control,
.form-select {
    border: 2px solid var(--border-color);
    border-radius: 8px;
    padding: 12px 16px;
    transition: all 0.3s ease;
    font-size: 0.95rem;
    background-color: var(--card-bg);
    color: var(--text-dark);
}

.form-control::placeholder {
    color: var(--text-light);
    opacity: 0.7;
}

.form-control:focus,
.form-select:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 4px rgba(0, 168, 157, 0.1);
    outline: none;
}

.form-label {
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 8px;
    font-size: 0.9rem;
}

.table {
    border-radius: 12px;
    overflow: hidden;
    vertical-align: middle;
}

.table thead {
    background: var(--gradient-primary);
    color: #fff;
}

.table thead th {
    border: none;
    padding: 16px;
    font-weight: 600;
    text-transform: uppercase;
    font-size: 0.85rem;
    letter-spacing: 0.5px;
    white-space: nowrap;
}

.table tbody tr {
    transition: all 0.2s ease;
    border-bottom: 1px solid var(--border-color);
}

.table tbody tr:hover {
    background-color: rgba(0, 168, 157, 0.05);
}

.table tbody td {
    padding: 16px;
    border-color: var(--border-color);
    vertical-align: middle;
}

.badge {
    padding: 6px 14px;
    border-radius: 20px;
    font-weight: 600;
    font-size: 0.8rem;
    letter-spacing: 0.3px;
}

.date-badge {
    background-color: var(--primary-color);
    color: #fff;
}

[data-theme="dark"] .date-badge {
    background-color: var(--primary-light);
    color: var(--text-dark);
}

h2,
h3,
h4,
h5,
h6 {
    color: var(--text-dark);
    font-weight: 700;
    letter-spacing: -0.3px;
}

h2 {
    font-size: 2.25rem;
    margin-bottom: 1.5rem;
}

h3 {
    font-size: 1.75rem;
    margin-bottom: 1.25rem;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }

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

.fade-in-up {
    animation: fadeInUp 0.6s ease-out;
}

@media (max-width: 768px) {
    .page-header h1 {
        font-size: 2rem;
    }

    .content-section {
        padding: 40px 0;
    }
}

.card,
.panel,
.box,
.info-card,
.news-card {
    background: var(--card-bg) !important;
    color: var(--text-dark) !important;
    border: 1px solid var(--border-color) !important;
    box-shadow: var(--shadow-sm) !important;
    border-radius: 12px;
}

.card .card-body,
.panel .panel-body,
.box .box-body {
    background: transparent;
    color: inherit;
}

.card h5,
.card h4,
.panel h4,
.box h4 {
    color: var(--text-dark) !important;
}

.card a,
.panel a,
.box a {
    color: var(--primary-color) !important;
}

.bg-white {
    background-color: var(--card-bg) !important;
}

/* --- Action Buttons Modern UI --- */
.action-buttons-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    align-items: center;
}

.btn-action-modern {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 6px 12px;
    border-radius: 6px;
    font-size: 0.85rem;
    font-weight: 500;
    text-decoration: none;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    border: 1px solid transparent;
    cursor: pointer;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
}

.btn-action-modern i {
    font-size: 1rem;
    margin-right: 0;
}

.btn-action-modern:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

.btn-action-modern:active {
    transform: translateY(0);
    box-shadow: none;
}

/* Variant: Edit (Primary/Blue) */
.btn-action-edit {
    background-color: transparent;
    color: var(--primary-color);
    border-color: var(--primary-color);
}

.btn-action-edit:hover {
    background-color: var(--primary-color);
    color: #fff;
}

/* Variant: Success/Accept/Check (Green) */
.btn-action-success {
    background-color: transparent;
    color: #2ecc71;
    border-color: #2ecc71;
}

.btn-action-success:hover {
    background-color: #2ecc71;
    color: #fff;
}

/* Variant: Danger/Reject/Delete (Red) */
.btn-action-danger {
    background-color: transparent;
    color: #e74c3c;
    border-color: #e74c3c;
}

.btn-action-danger:hover {
    background-color: #e74c3c;
    color: #fff;
}

/* Variant: Info/PDF (Blue-ish) */
.btn-action-info {
    background-color: transparent;
    color: #3498db;
    border-color: #3498db;
}

.btn-action-info:hover {
    background-color: #3498db;
    color: #fff;
}

[data-theme="dark"] .btn-action-modern {
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

/* Submissions Specific Grid: 2-2-1 Layout */
.submissions-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 8px;
    width: max-content;
    margin: 0 auto;
    /* Center the grid in the cell */
}

.submissions-grid>* {
    width: 100%;
    /* Make buttons fill the grid cell */
    display: flex;
    /* Ensure form/button contents align */
    justify-content: center;
}

.submissions-grid>form {
    display: flex;
    width: 100%;
}

.submissions-grid>form>button {
    width: 100%;
}

/* The last item (5th) should span 2 columns and be centered */
.submissions-grid>*:nth-last-child(1) {
    grid-column: 1 / -1;
    width: auto;
    /* Don't stretch the delete button too much if not needed, or use 60-80% */
    justify-self: center;
    min-width: 50%;
}