.navbar {
    width: 100%;
    padding: 1rem 2.5rem;
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--glass-border);
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: sticky;
    top: 0;
    z-index: 100;
}

.nav-brand {
    font-size: 1.5rem;
    font-weight: 700;
    background: linear-gradient(90deg, #58a6ff, #a371f7);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

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

.logout-btn {
    background: transparent;
    border: 1px solid var(--error-color);
    color: var(--error-color);
    padding: 0.4rem 1rem;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.3s;
}

.logout-btn:hover {
    background: rgba(255, 123, 114, 0.1);
}

.dashboard-container {
    padding: 2.5rem;
    max-width: 1200px;
    width: 100%;
}

.card {
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    border-radius: var(--border-radius);
    padding: 1.5rem;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
}

.overview-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.stat-card h3 {
    font-size: 0.95rem;
    color: #8b949e;
    margin-bottom: 0.5rem;
    font-weight: 500;
}

.stat-value {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-color);
}

.main-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    margin-bottom: 2rem;
}

@media (max-width: 800px) {
    .main-grid {
        grid-template-columns: 1fr;
    }
}

.card h2 {
    font-size: 1.3rem;
    margin-bottom: 1.5rem;
    font-weight: 600;
    color: var(--primary-color);
}

select {
    width: 100%;
    padding: 0.75rem 1rem;
    border-radius: 8px;
    background-color: var(--input-bg);
    border: 1px solid var(--glass-border);
    color: var(--text-color);
    font-size: 1rem;
}

.file-upload input[type="file"] {
    padding: 0.5rem 0;
    border: none;
    background: transparent;
}

.chart-container {
    position: relative;
    height: 300px;
    width: 100%;
    display: flex;
    justify-content: center;
}

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

.secondary-btn {
    background: rgba(88, 166, 255, 0.1);
    border: 1px solid var(--primary-color);
    color: var(--primary-color);
    padding: 0.5rem 1rem;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.3s;
}

.secondary-btn:hover {
    background: rgba(88, 166, 255, 0.2);
}

.table-responsive {
    overflow-x: auto;
}

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

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

th {
    color: #8b949e;
    font-weight: 500;
    font-size: 0.9rem;
}

th.sortable {
    cursor: pointer;
    user-select: none;
    transition: color 0.2s;
}

th.sortable:hover {
    color: var(--text-color);
}

.sort-icon::after {
    content: '\21D5';
    /* Up/down arrow */
    font-size: 0.8em;
    margin-left: 5px;
    opacity: 0.5;
}

th.sortable.asc .sort-icon::after {
    content: '\2191';
    /* Up arrow */
    opacity: 1;
    color: var(--primary-color);
}

th.sortable.desc .sort-icon::after {
    content: '\2193';
    /* Down arrow */
    opacity: 1;
    color: var(--primary-color);
}

.filter-row th {
    padding: 0.5rem 1rem;
    background: rgba(0, 0, 0, 0.1);
}

td {
    font-size: 0.95rem;
}

.delete-btn {
    color: var(--error-color);
    background: none;
    border: none;
    cursor: pointer;
    font-size: 0.9rem;
}

.delete-btn:hover {
    text-decoration: underline;
}

.badge {
    padding: 0.2rem 0.6rem;
    border-radius: 20px;
    font-size: 0.8rem;
    background: rgba(163, 113, 247, 0.2);
    color: #a371f7;
}

.badge-sub {
    padding: 0.2rem 0.6rem;
    border-radius: 20px;
    font-size: 0.8rem;
    background: rgba(63, 185, 80, 0.15);
    color: #3fb950;
}

/* Tabs styles */
.tabs-container {
    display: flex;
    gap: 0.5rem;
    border-bottom: 1px solid var(--glass-border);
    margin-bottom: 1.5rem;
    padding-bottom: 0.5rem;
    overflow-x: auto;
}

.tab-btn {
    background: transparent;
    border: none;
    color: #8b949e;
    padding: 0.5rem 1rem;
    font-size: 0.95rem;
    font-weight: 500;
    cursor: pointer;
    border-radius: 6px;
    transition: all 0.3s ease;
    white-space: nowrap;
}

.tab-btn:hover {
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-color);
}

.tab-btn.active {
    background: rgba(88, 166, 255, 0.15);
    color: var(--primary-color);
    box-shadow: 0 -2px 0 var(--primary-color) inset;
}

/* Subcategory Pills */
.subcategory-pills-container {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-top: 0.8rem;
    padding-top: 0.5rem;
    border-top: 1px dashed var(--glass-border);
}

.subcat-pill {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--glass-border);
    color: #8b949e;
    padding: 0.3rem 0.8rem;
    border-radius: 20px;
    font-size: 0.8rem;
    cursor: pointer;
    transition: all 0.2s ease;
}

.subcat-pill:hover {
    background: rgba(88, 166, 255, 0.1);
    color: var(--primary-color);
    border-color: var(--primary-color);
}

.subcat-pill.active {
    background: rgba(88, 166, 255, 0.2);
    color: var(--primary-color);
    border-color: var(--primary-color);
    font-weight: 600;
}

/* Modals */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(5px);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
}

.modal-content {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    padding: 2rem;
    border-radius: 12px;
    width: 90%;
    max-width: 500px;
    max-height: 90vh;
    overflow-y: auto;
    position: relative;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5);
}

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

.modal-header h2 {
    margin: 0;
}

.close-btn {
    background: none;
    border: none;
    color: #8b949e;
    font-size: 1.5rem;
    cursor: pointer;
    transition: color 0.3s;
}

.close-btn:hover {
    color: var(--text-color);
}
@media(max-width: 768px) { .overview-grid { grid-template-columns: 1fr 1fr; } .main-stat { grid-column: span 2; } }