/* ============================================================
   MTB de Hondsrug - Trainingsplanner
   Modern design system: slate + neon-groen accent, veel lucht.
   ============================================================ */

:root {
    /* Brand */
    --mtb-green: #39ff14;
    --mtb-green-500: #2dd90a;
    --mtb-green-600: #25b608;
    --mtb-green-glow: rgba(57, 255, 20, 0.14);

    /* Neutral (slate) */
    --slate-950: #0a0f19;
    --slate-900: #111827;
    --slate-800: #1f2937;
    --slate-700: #374151;
    --slate-500: #6b7280;
    --slate-400: #9ca3af;
    --slate-300: #d1d5db;
    --slate-200: #e5e7eb;
    --slate-100: #f3f4f6;
    --slate-50: #f8fafc;

    /* Surfaces */
    --bg-page: #f8fafc;
    --bg-surface: #ffffff;
    --bg-elevated: #ffffff;

    /* Text */
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --text-muted: #94a3b8;
    --text-on-dark: #e2e8f0;

    /* Lines */
    --border-subtle: #eef2f7;
    --border-default: #e2e8f0;

    /* Radius */
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 14px;
    --radius-xl: 20px;

    /* Shadows */
    --shadow-xs: 0 1px 2px rgba(15, 23, 42, 0.04);
    --shadow-sm: 0 1px 3px rgba(15, 23, 42, 0.06), 0 1px 2px rgba(15, 23, 42, 0.03);
    --shadow-md: 0 4px 6px -1px rgba(15, 23, 42, 0.08), 0 2px 4px -2px rgba(15, 23, 42, 0.04);
    --shadow-lg: 0 10px 15px -3px rgba(15, 23, 42, 0.1), 0 4px 6px -4px rgba(15, 23, 42, 0.05);

    /* Focus ring */
    --ring-green: 0 0 0 3px rgba(57, 255, 20, 0.25);
}

/* ============================================================
   Typografie en basis
   ============================================================ */

*, *::before, *::after {
    box-sizing: border-box;
}

html {
    -webkit-text-size-adjust: 100%;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

html, body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    font-feature-settings: 'cv02', 'cv03', 'cv04', 'cv11';
    color: var(--text-primary);
    background-color: var(--bg-page);
    font-size: 15px;
    line-height: 1.6;
}

h1, h2, h3, h4, h5, h6 {
    color: var(--text-primary);
    font-weight: 600;
    letter-spacing: -0.015em;
    line-height: 1.25;
    margin-bottom: 0.5rem;
}

/* Blazor plaatst tabindex=-1 op de h1 na navigatie voor screenreaders; de browser
   zet daar een focus-outline op die zichtbaar is als zwarte/blauwe rand. Weghalen. */
h1:focus,
h1:focus-visible,
h2:focus,
h2:focus-visible,
h3:focus,
h3:focus-visible {
    outline: none;
    box-shadow: none;
}

h1 { font-size: 1.75rem; font-weight: 700; margin-bottom: 1rem; letter-spacing: -0.025em; }
h2 { font-size: 1.4rem; }
h3 { font-size: 1.2rem; }
h4, h5, h6 { font-size: 1.05rem; }

p { color: var(--text-secondary); }
p.lead { color: var(--text-secondary); font-size: 1.05rem; }

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

a {
    color: var(--mtb-green-600);
    text-decoration: none;
    transition: color 0.15s ease;
}

a:hover {
    color: var(--mtb-green-500);
    text-decoration: underline;
}

hr {
    border: 0;
    border-top: 1px solid var(--border-default);
    margin: 1.5rem 0;
    opacity: 1;
}

/* ============================================================
   Buttons - modern en rustig
   ============================================================ */

.btn {
    font-weight: 500;
    border-radius: var(--radius-sm);
    padding: 0.5rem 1rem;
    transition: all 0.15s ease;
    border: 1px solid transparent;
    font-size: 0.925rem;
    line-height: 1.5;
}

.btn-lg {
    padding: 0.625rem 1.25rem;
    font-size: 1rem;
    border-radius: var(--radius-md);
}

.btn-sm {
    padding: 0.3rem 0.75rem;
    font-size: 0.825rem;
}

.btn-primary {
    background-color: var(--slate-950);
    border-color: var(--slate-950);
    color: var(--mtb-green);
    box-shadow: var(--shadow-xs);
}

.btn-primary:hover,
.btn-primary:focus,
.btn-primary:active {
    background-color: var(--slate-900) !important;
    border-color: var(--slate-900) !important;
    color: var(--mtb-green) !important;
    box-shadow: var(--shadow-sm) !important;
    transform: translateY(-1px);
}

.btn-primary:disabled {
    background-color: var(--slate-700);
    border-color: var(--slate-700);
    color: var(--slate-400);
    transform: none;
    box-shadow: none;
}

.btn-success {
    background-color: var(--mtb-green-600);
    border-color: var(--mtb-green-600);
    color: #fff;
}

.btn-success:hover {
    background-color: var(--mtb-green-500);
    border-color: var(--mtb-green-500);
    color: #fff;
}

.btn-outline-primary {
    color: var(--slate-900);
    border-color: var(--border-default);
    background: #fff;
}

.btn-outline-primary:hover {
    color: var(--slate-950);
    background: var(--slate-50);
    border-color: var(--slate-300);
}

.btn-secondary,
.btn-outline-secondary {
    color: var(--text-secondary);
    background: #fff;
    border-color: var(--border-default);
}

.btn-secondary:hover,
.btn-outline-secondary:hover {
    color: var(--text-primary);
    background: var(--slate-50);
    border-color: var(--slate-300);
}

.btn-outline-danger {
    color: #dc2626;
    background: #fff;
    border-color: var(--border-default);
}

.btn-outline-danger:hover {
    color: #fff;
    background: #dc2626;
    border-color: #dc2626;
}

.btn:focus-visible {
    outline: 0;
    box-shadow: var(--ring-green);
}

/* ============================================================
   Forms - moderne inputs
   ============================================================ */

.form-control,
.form-select {
    border-radius: var(--radius-sm);
    border-color: var(--border-default);
    padding: 0.5rem 0.75rem;
    font-size: 0.95rem;
    transition: border-color 0.15s ease, box-shadow 0.15s ease;
    background-color: #fff;
}

.form-control:focus,
.form-select:focus {
    border-color: var(--mtb-green-500);
    box-shadow: var(--ring-green);
    outline: 0;
}

.form-label {
    font-weight: 500;
    font-size: 0.875rem;
    color: var(--text-primary);
    margin-bottom: 0.375rem;
}

.form-check-input {
    border-color: var(--slate-300);
    border-radius: 4px;
}

.form-check-input:checked {
    background-color: var(--mtb-green-600);
    border-color: var(--mtb-green-600);
}

.form-check-input:focus {
    border-color: var(--mtb-green-500);
    box-shadow: var(--ring-green);
}

.form-floating > label {
    color: var(--text-muted);
    padding: 0.75rem;
}

/* ============================================================
   Cards
   ============================================================ */

.card {
    border: 1px solid var(--border-default);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-xs);
    background: var(--bg-surface);
    transition: box-shadow 0.2s ease;
    overflow: hidden;
}

.card:hover {
    box-shadow: var(--shadow-sm);
}

.card-body {
    padding: 1.25rem;
}

.card-title {
    font-size: 1rem;
    font-weight: 600;
    letter-spacing: -0.01em;
    margin-bottom: 0.75rem;
    color: var(--text-primary);
}

/* ============================================================
   Alerts - zachter
   ============================================================ */

.alert {
    border-radius: var(--radius-md);
    border-width: 1px;
    padding: 0.875rem 1rem;
    font-size: 0.925rem;
}

.alert-success {
    background-color: #ecfdf5;
    border-color: #a7f3d0;
    color: #065f46;
}

.alert-danger {
    background-color: #fef2f2;
    border-color: #fecaca;
    color: #991b1b;
}

.alert-warning {
    background-color: #fffbeb;
    border-color: #fcd34d;
    color: #92400e;
}

.alert-info {
    background-color: #eff6ff;
    border-color: #bfdbfe;
    color: #1e40af;
}

.alert-warning.bg-warning-subtle,
.bg-warning-subtle {
    background-color: #fef3c7 !important;
}

.bg-danger-subtle {
    background-color: #fee2e2 !important;
}

.bg-success-subtle {
    background-color: #dcfce7 !important;
}

.bg-primary-subtle {
    background-color: #e0f2fe !important;
}

/* ============================================================
   Tables - borderless moderne stijl
   ============================================================ */

.table {
    font-size: 0.925rem;
    color: var(--text-primary);
    margin-bottom: 0;
    --bs-table-border-color: var(--border-subtle);
}

.table > :not(caption) > * > * {
    padding: 0.75rem 0.875rem;
    vertical-align: middle;
}

.table thead th {
    font-weight: 600;
    font-size: 0.8rem;
    letter-spacing: 0.02em;
    text-transform: uppercase;
    color: var(--text-muted);
    background-color: var(--slate-50);
    border-bottom: 1px solid var(--border-default);
}

.table tbody tr {
    transition: background-color 0.1s ease;
}

.table tbody tr:hover {
    background-color: var(--slate-50);
}

.table-hover > tbody > tr:hover > * {
    background-color: var(--slate-50);
    --bs-table-bg-state: transparent;
}

.table-bordered {
    border-radius: var(--radius-md);
    overflow: hidden;
}

.table-bordered > :not(caption) > * > * {
    border-color: var(--border-subtle);
}

.table-sm > :not(caption) > * > * {
    padding: 0.5rem 0.625rem;
}

.table-responsive {
    border: 1px solid var(--border-default);
    border-radius: var(--radius-md);
    background: #fff;
    box-shadow: var(--shadow-xs);
}

.table-responsive .table {
    margin-bottom: 0;
}

.table-responsive .table-bordered {
    border-radius: 0;
    border: 0;
}

/* ============================================================
   Badges
   ============================================================ */

.badge {
    font-weight: 500;
    padding: 0.3rem 0.55rem;
    border-radius: 999px;
    font-size: 0.75rem;
    letter-spacing: 0.01em;
}

.badge.bg-success {
    background-color: #10b981 !important;
}

.badge.bg-warning {
    background-color: #f59e0b !important;
    color: #fff !important;
}

.badge.bg-secondary {
    background-color: var(--slate-200) !important;
    color: var(--slate-700) !important;
}

.badge.bg-info {
    background-color: #0ea5e9 !important;
    color: #fff !important;
}

.badge.bg-danger {
    background-color: #ef4444 !important;
}

/* ============================================================
   Nav tabs (zoals in seizoen-detail)
   ============================================================ */

.nav-tabs {
    border-bottom: 1px solid var(--border-default);
    gap: 0.25rem;
}

.nav-tabs .nav-link {
    border: 0;
    border-bottom: 2px solid transparent;
    border-radius: 0;
    color: var(--text-secondary);
    padding: 0.6rem 1rem;
    font-weight: 500;
    background: none;
}

.nav-tabs .nav-link:hover {
    color: var(--text-primary);
    border-bottom-color: var(--border-default);
    background: none;
}

.nav-tabs .nav-link.active {
    color: var(--text-primary);
    border-bottom-color: var(--mtb-green-500);
    background: none;
}

/* ============================================================
   List group (admin sub-nav)
   ============================================================ */

.list-group {
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-xs);
}

.list-group-item {
    border-color: var(--border-subtle);
    font-size: 0.925rem;
    padding: 0.625rem 0.875rem;
    color: var(--text-primary);
}

.list-group-item-action:hover {
    background-color: var(--slate-50);
    color: var(--text-primary);
}

.list-group-item.active {
    background-color: var(--slate-900);
    border-color: var(--slate-900);
    color: var(--mtb-green);
}

/* ============================================================
   Modal
   ============================================================ */

.modal-content {
    border: 0;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
}

.modal-header {
    border-bottom: 1px solid var(--border-default);
    padding: 1rem 1.25rem;
}

.modal-footer {
    border-top: 1px solid var(--border-default);
    padding: 0.875rem 1.25rem;
}

/* ============================================================
   Validatie
   ============================================================ */

.validation-message {
    color: #dc2626;
    font-size: 0.85rem;
    margin-top: 0.25rem;
}

.valid.modified:not([type=checkbox]) {
    outline: none;
    border-color: var(--mtb-green-500) !important;
}

.invalid {
    outline: none;
    border-color: #dc2626 !important;
}

/* ============================================================
   Layout helpers
   ============================================================ */

.content {
    padding-top: 1.5rem;
    padding-bottom: 3rem;
    max-width: 1280px;
    margin: 0 auto;
    width: 100%;
}

/* Planning-matrix tabellen krijgen een sticky eerste kolom
   zodat de datum zichtbaar blijft tijdens scrollen. */
.planning-table thead th:first-child,
.planning-table tbody td:first-child {
    position: sticky;
    left: 0;
    background-color: #fff;
    z-index: 2;
    box-shadow: 2px 0 4px -2px rgba(0,0,0,0.08);
}

.planning-table thead th:first-child {
    background-color: var(--slate-50);
    z-index: 3;
}

/* ============================================================
   Blazor error ui
   ============================================================ */

.blazor-error-boundary {
    background: #dc2626;
    padding: 1rem 1.25rem;
    color: white;
    border-radius: var(--radius-md);
}

.blazor-error-boundary::after {
    content: "Er is een fout opgetreden."
}

/* ============================================================
   Mobiel tweaks
   ============================================================ */

@media (max-width: 767.98px) {
    html, body { font-size: 14.5px; }
    h1 { font-size: 1.4rem; }
    h2 { font-size: 1.2rem; }
    .content { padding-top: 1rem; padding-bottom: 2rem; }
    .card-body { padding: 1rem; }
}

/* ============================================================
   Day-card: klikbare kaart voor beschikbaarheid-invoer
   Gebruikt in /mijn/beschikbaarheid en admin variant.
   ============================================================ */

.day-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    gap: 0.75rem;
    margin-bottom: 1.5rem;
}

.day-card {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.75rem;
    width: 100%;
    padding: 0.85rem 1rem;
    background: #fff;
    border: 1.5px solid var(--border-default);
    border-radius: var(--radius-md);
    text-align: left;
    cursor: pointer;
    transition: all 0.15s ease;
    font: inherit;
    color: inherit;
}

.day-card:hover:not(:disabled) {
    border-color: var(--slate-300);
    background: var(--slate-50);
    transform: translateY(-1px);
    box-shadow: var(--shadow-sm);
}

.day-card:focus-visible {
    outline: 0;
    border-color: var(--mtb-green-500);
    box-shadow: var(--ring-green);
}

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

.day-card-content {
    display: flex;
    flex-direction: column;
    gap: 0.15rem;
    min-width: 0;
    flex: 1;
}

.day-card-date {
    font-weight: 500;
    color: var(--text-primary);
    text-transform: capitalize;
    font-size: 0.95rem;
}

.day-card-sub {
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.day-card-status {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    border-radius: 50%;
    flex-shrink: 0;
    font-size: 0.8rem;
    color: transparent;
    background: transparent;
    transition: all 0.15s ease;
}

.day-card.is-unavailable {
    background: #fef2f2;
    border-color: #fecaca;
}

.day-card.is-unavailable:hover:not(:disabled) {
    background: #fee2e2;
    border-color: #fca5a5;
}

.day-card.is-unavailable .day-card-date {
    color: #991b1b;
}

.day-card.is-unavailable .day-card-sub {
    color: #b91c1c;
}

.day-card.is-unavailable .day-card-status {
    background: #dc2626;
    color: #fff;
}