:root,
[data-theme="dark"] {
    --bg: #10151c;
    --bg-elevated: #1a212b;
    --bg-elevated-2: #222b36;
    --border: #2c3744;
    --text: #e6ecf2;
    --text-muted: #9aa7b4;
    --accent: #3fb27f;
    --accent-hover: #34a36f;
    --accent-text: #06120c;
    --danger: #e5645f;
    --danger-hover: #d1524d;
    --shadow: 0 10px 30px rgba(0, 0, 0, 0.45);
    --sidebar-bg: #0b1016;
}

[data-theme="light"] {
    --bg: #f4f6f9;
    --bg-elevated: #ffffff;
    --bg-elevated-2: #eef1f5;
    --border: #d7dee6;
    --text: #17202a;
    --text-muted: #5b6673;
    --accent: #1f8a5b;
    --accent-hover: #1a7650;
    --accent-text: #ffffff;
    --danger: #c0392b;
    --danger-hover: #a93226;
    --shadow: 0 8px 24px rgba(23, 32, 42, 0.12);
    --sidebar-bg: #e9edf2;
}

html, body {
    font-family: 'Segoe UI', 'Helvetica Neue', Helvetica, Arial, sans-serif;
    background-color: var(--bg);
    color: var(--text);
    color-scheme: dark;
}

a {
    color: var(--accent);
    text-decoration: none;
}

a:hover {
    color: var(--accent-hover);
    text-decoration: underline;
}

.btn-link {
    color: var(--accent);
}

.btn-link:hover {
    color: var(--accent-hover);
}

h1, h2, h3, h4, h5, h6 {
    color: var(--text);
}

h1:focus {
    outline: none;
}

::placeholder {
    color: var(--text-muted);
    opacity: 0.95;
}

.page {
    position: relative;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

.page-body {
    display: flex;
    flex: 1;
    align-items: stretch;
}

main {
    flex: 1;
    min-width: 0;
}

.sidebar {
    background-color: var(--sidebar-bg);
    border-right: 1px solid var(--border);
    width: 240px;
    flex-shrink: 0;
}

.top-row {
    background-color: var(--bg-elevated);
    border-bottom: 1px solid var(--border);
    justify-content: space-between;
    height: 3.75rem;
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 0 1.25rem;
}

.top-row .brand {
    font-weight: 700;
    font-size: 1.15rem;
    color: var(--text);
    text-decoration: none;
    letter-spacing: 0.02em;
}

.top-row .spacer {
    flex: 1;
}

.content {
    padding: 1.5rem;
    max-width: 1200px;
}

@media (max-width: 900px) {
    .page-body {
        flex-direction: column;
    }

    .sidebar {
        width: 100%;
        border-right: none;
        border-bottom: 1px solid var(--border);
    }
}

/* Nav */
.navbar-toggler {
    display: none;
}

.nav-scrollable {
    height: calc(100vh - 3.75rem);
    overflow-y: auto;
}

.nav-column {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
    padding: 1rem 0.75rem;
}

.nav-column .nav-link {
    color: var(--text);
    border-radius: 0.5rem;
    padding: 0.6rem 0.85rem;
    text-decoration: none;
    font-weight: 500;
}

.nav-column .nav-link:hover {
    background-color: var(--bg-elevated-2);
    color: var(--text);
}

.nav-column .nav-link.active {
    background-color: var(--accent);
    color: var(--accent-text);
}

/* Cards */
.card {
    background-color: var(--bg-elevated);
    border: 1px solid var(--border);
    border-radius: 0.75rem;
    padding: 1.25rem;
    box-shadow: var(--shadow);
    margin-bottom: 1.25rem;
}

.card h2, .card h3 {
    margin-top: 0;
}

.grid {
    display: grid;
    gap: 1rem;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
}

/* Forms */
.form-group {
    margin-bottom: 1rem;
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
}

label {
    color: var(--text);
    font-size: 0.9rem;
    font-weight: 600;
}

input, select, textarea {
    background-color: var(--bg-elevated-2);
    color: var(--text);
    border: 1px solid var(--border);
    border-radius: 0.5rem;
    padding: 0.55rem 0.7rem;
    font-size: 1rem;
}

input:focus, select:focus, textarea:focus {
    outline: 2px solid var(--accent);
    outline-offset: 1px;
}

.form-row {
    display: grid;
    gap: 1rem;
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.4rem;
    border: 1px solid var(--border);
    background-color: var(--bg-elevated-2);
    color: var(--text);
    border-radius: 0.5rem;
    padding: 0.55rem 1rem;
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    text-decoration: none;
}

.btn:hover {
    border-color: var(--accent);
    color: var(--text);
}

.btn-primary {
    background-color: var(--accent);
    color: #fff;
    border-color: var(--accent);
}

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

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

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

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.btn-sm {
    padding: 0.3rem 0.65rem;
    font-size: 0.85rem;
}

.btn-icon {
    background: transparent;
    border: none;
    color: var(--text);
    cursor: pointer;
    font-size: 1.2rem;
    padding: 0.25rem 0.5rem;
    border-radius: 0.5rem;
}

.btn-icon:hover {
    background-color: var(--bg-elevated-2);
}

/* Tables */
table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.95rem;
}

th {
    text-align: left;
    padding: 0.6rem 0.75rem;
    border-bottom: 1px solid var(--border);
    color: var(--text);
    font-weight: 600;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.03em;
}

td {
    text-align: left;
    padding: 0.6rem 0.75rem;
    border-bottom: 1px solid var(--border);
    color: var(--text);
}

tbody tr:hover {
    background-color: var(--bg-elevated-2);
}

.price-cheapest {
    color: var(--accent);
    font-weight: 700;
}

/* Misc */
.badge {
    display: inline-block;
    padding: 0.15rem 0.55rem;
    border-radius: 999px;
    background-color: var(--bg-elevated-2);
    color: var(--text-muted);
    font-size: 0.78rem;
    font-weight: 600;
}

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

.text-danger {
    color: var(--danger);
}

.alert {
    border-radius: 0.5rem;
    padding: 0.7rem 0.9rem;
    margin-bottom: 1rem;
    border: 1px solid var(--border);
}

.alert-error {
    border-color: var(--danger);
    color: var(--danger);
}

.alert-success {
    border-color: var(--accent);
    color: var(--accent);
}

.row-actions {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.spinner {
    width: 1rem;
    height: 1rem;
    border: 2px solid var(--border);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    display: inline-block;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

#blazor-error-ui {
    background: var(--bg-elevated);
    color: var(--text);
    border-top: 1px solid var(--border);
    bottom: 0;
    box-shadow: var(--shadow);
    box-sizing: border-box;
    display: none;
    left: 0;
    padding: 0.6rem 1.25rem 0.7rem 1.25rem;
    position: fixed;
    width: 100%;
    z-index: 1000;
}

#blazor-error-ui .dismiss {
    cursor: pointer;
    position: absolute;
    right: 0.75rem;
    top: 0.5rem;
}

.valid.modified:not([type=checkbox]) {
    outline: 1px solid var(--accent);
}

.invalid {
    outline: 1px solid var(--danger);
}

.validation-message {
    color: var(--danger);
    font-size: 0.85rem;
}