/* Wiskundekompetisie 2026 - Blue, mobile-friendly UI */
:root {
    --color-primary: #2563eb;
    --color-primary-dark: #1d4ed8;
    --color-primary-light: #3b82f6;
    --color-bg: #ffffff;
    --color-bg-card: #ffffff;
    --color-text: #1e293b;
    --color-text-muted: #64748b;
    --color-border: #94a3b8;
    --color-border-strong: #64748b;
    --color-border-focus: #2563eb;
    --color-success: #059669;
    --color-error: #dc2626;
    --color-error-bg: #fef2f2;
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.06);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.08), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -4px rgba(0, 0, 0, 0.05);
    --radius: 10px;
    --radius-sm: 6px;
    --radius-lg: 14px;
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
    --transition: 0.2s ease;
    --touch-min: 44px;
}

* {
    box-sizing: border-box;
}

html {
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--font-sans);
    background: var(--color-bg);
    color: var(--color-text);
    margin: 0;
    padding: 0;
    line-height: 1.6;
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
}

/* Touch-friendly: remove tap delay and set highlight */
a, button, input, select, textarea, [role="button"] {
    -webkit-tap-highlight-color: rgba(37, 99, 235, 0.15);
    touch-action: manipulation;
}

/* Header area with main competition logo */
.site-header {
    background: var(--color-bg);
    color: var(--color-text);
    padding: 2rem 2rem 1.5rem;
    box-shadow: var(--shadow-md);
    position: relative;
}

.site-header::after {
    content: none;
}

.logo-row {
    min-height: 360px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1.5rem;
    flex-wrap: wrap;
}

.logo-row img {
    max-height: 360px; /* much larger hero logo */
    width: auto;
    max-width: 100%;
}

.main-logo {
    display: block;
    margin: 0 auto;
    filter: none !important;
}

.competition-link {
    margin-top: 0.75rem;
    text-align: center;
    font-size: 0.95rem;
}

.competition-link a {
    color: var(--color-primary-dark);
    text-decoration: none;
    font-weight: 600;
    opacity: 0.95;
    transition: opacity var(--transition);
    padding: 0.25rem 0;
    min-height: var(--touch-min);
    display: inline-flex;
    align-items: center;
}

.competition-link a:hover {
    opacity: 1;
    text-decoration: underline;
}

/* Main content */
.main-content {
    max-width: 720px;
    margin: 0 auto;
    padding: 2rem 1.5rem;
}

.main-content > h1 {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--color-text);
    margin: 0 0 1.75rem 0;
    letter-spacing: -0.02em;
}

/* Form sections - card style */
.form-section {
    background: var(--color-bg-card);
    border-radius: var(--radius-lg);
    padding: 1.75rem 2rem;
    margin-bottom: 1.5rem;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--color-border);
    transition: box-shadow var(--transition), border-color var(--transition);
}

.form-section:hover {
    box-shadow: var(--shadow-md);
}

.form-section h2 {
    margin: 0 0 1.25rem 0;
    color: var(--color-primary);
    font-size: 1.125rem;
    font-weight: 600;
    letter-spacing: -0.01em;
    padding-bottom: 0.75rem;
    border-bottom: 2px solid var(--color-border);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.form-section h2::before {
    content: '';
    width: 4px;
    height: 1.25rem;
    background: linear-gradient(180deg, var(--color-primary), var(--color-primary-light));
    border-radius: 2px;
}

.form-row {
    margin-bottom: 1.25rem;
}

.form-row:last-child {
    margin-bottom: 0;
}

.form-row label {
    display: block;
    font-weight: 500;
    margin-bottom: 0.4rem;
    color: var(--color-text);
    font-size: 0.9375rem;
}

/* Inputs: more defined borders */
.form-row input,
.form-row select {
    width: 100%;
    padding: 0.75rem 0.9rem;
    min-height: var(--touch-min);
    font-size: 16px;
    border: 2px solid var(--color-border-strong);
    border-radius: var(--radius-sm);
    font-family: inherit;
    color: var(--color-text);
    background: #fff;
    transition: border-color var(--transition), box-shadow var(--transition);
}

.form-row input::placeholder {
    color: var(--color-text-muted);
}

.form-row input:hover,
.form-row select:hover {
    border-color: var(--color-border);
}

.form-row input:focus,
.form-row select:focus {
    outline: none;
    border-color: var(--color-border-focus);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.2);
}

/* Error message block */
.form-section.form-errors {
    border-color: var(--color-error);
    background: var(--color-error-bg);
}

.form-section.form-errors h2,
.form-section.form-errors p {
    color: var(--color-error);
}

.form-section.form-errors ul {
    color: var(--color-error);
    margin: 0;
    padding-left: 1.25rem;
}

/* School search combo - touch friendly (dropdown anchored to input row only) */
.school-search-inner {
    position: relative;
}

.school-combo-list {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    margin-top: 2px;
    background: var(--color-bg-card);
    border: 2px solid var(--color-border-strong);
    border-radius: var(--radius-sm);
    max-height: 260px;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
    z-index: 100;
    display: none;
    box-shadow: var(--shadow-lg);
}

.school-combo-list.show {
    display: block;
}

.school-combo-list div {
    padding: 0.75rem 0.9rem;
    min-height: var(--touch-min);
    display: flex;
    align-items: center;
    cursor: pointer;
    transition: background var(--transition);
    border-bottom: 1px solid var(--color-border);
}

.school-combo-list div:last-child {
    border-bottom: none;
}

.school-combo-list div:hover,
.school-combo-list div:active,
.school-combo-list div.selected {
    background: #eff6ff;
}

.school-combo-hint {
    font-size: 0.8125rem;
    color: var(--color-text-muted);
    margin-top: 0.35rem;
}

.school-request-prompt {
    margin: 1.35rem 0 0.5rem 0;
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.manual-school-wrap {
    margin-top: 0.35rem;
}

.manual-school-wrap .form-row {
    margin-bottom: 0;
}
.school-request-text {
    font-size: 0.9375rem;
    color: var(--color-text);
}
.btn-inline {
    padding: 0.5rem 1rem;
    font-size: 0.9375rem;
}

/* Children grid - ensure fully visible, scroll on small screens */
.children-grid {
    overflow-x: auto;
    overflow-y: visible;
    -webkit-overflow-scrolling: touch;
    border-radius: var(--radius-sm);
    border: 2px solid var(--color-border-strong);
    margin-bottom: 0.5rem;
}

.children-grid table {
    width: 100%;
    min-width: 520px;
    border-collapse: collapse;
}

.children-grid th,
.children-grid td {
    padding: 0.65rem 0.5rem;
    text-align: left;
    border-right: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
    vertical-align: middle;
}

.children-grid th:last-child,
.children-grid td:last-child {
    border-right: none;
}

.children-grid tr:last-child td {
    border-bottom: none;
}

.children-grid th {
    background: var(--color-primary);
    color: #fff;
    font-weight: 600;
    font-size: 0.875rem;
}

.children-grid td input,
.children-grid td select {
    width: 100%;
    padding: 0.6rem 0.5rem;
    min-height: var(--touch-min);
    font-size: 16px;
    border: 2px solid var(--color-border-strong);
    border-radius: var(--radius-sm);
    font-family: inherit;
    transition: border-color var(--transition);
}

/* Grade dropdown in grid: wider so "Graad X" text is fully visible */
.children-grid td select.child-grade-select {
    min-width: 7rem;
    width: auto;
}

.children-grid td input:focus,
.children-grid td select:focus {
    outline: none;
    border-color: var(--color-border-focus);
}

/* Remove button - touch friendly */
.children-grid .remove-row {
    min-height: var(--touch-min);
    min-width: var(--touch-min);
    padding: 0.5rem 0.75rem;
}

/* Buttons - touch friendly */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.85rem 1.5rem;
    min-height: var(--touch-min);
    font-size: 1rem;
    font-weight: 600;
    border: none;
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-family: inherit;
    text-decoration: none;
    text-align: center;
    transition: background var(--transition), transform 0.1s ease;
}

.btn:active {
    transform: scale(0.98);
}

.btn-primary {
    background: linear-gradient(180deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    color: #fff;
    box-shadow: var(--shadow-sm);
}

.btn-primary:hover,
.btn-primary:focus {
    background: var(--color-primary-dark);
    box-shadow: var(--shadow-md);
}

.btn-secondary {
    background: #f1f5f9;
    color: var(--color-text);
    border: 2px solid var(--color-border-strong);
}

.btn-secondary:hover,
.btn-secondary:focus {
    background: #e2e8f0;
}

.btn-add-row {
    margin-top: 0.85rem;
}

/* Success page */
.success-box {
    background: var(--color-bg-card);
    border-radius: var(--radius-lg);
    padding: 2rem;
    margin-bottom: 1.5rem;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--color-border);
}

.success-box h1 {
    color: var(--color-success);
    margin: 0 0 0.5rem 0;
    font-size: 1.5rem;
    font-weight: 700;
}

.results-table {
    width: 100%;
    border-collapse: collapse;
    margin: 1.5rem 0;
    border-radius: var(--radius-sm);
    overflow: hidden;
    border: 2px solid var(--color-border-strong);
}

.results-table th,
.results-table td {
    padding: 0.75rem 0.9rem;
    text-align: left;
    border-bottom: 1px solid var(--color-border);
}

.results-table th {
    background: var(--color-primary);
    color: #fff;
    font-weight: 600;
    font-size: 0.875rem;
}

.success-actions {
    margin-top: 1.5rem;
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
}

.note-box {
    background: #eff6ff;
    border: 2px solid var(--color-primary-light);
    border-radius: var(--radius-sm);
    padding: 1rem 1.25rem;
    margin: 1rem 0;
    font-size: 0.9375rem;
}

.remove-row {
    background: var(--color-error);
    color: #fff;
    border: none;
    padding: 0.5rem 0.75rem;
    min-height: var(--touch-min);
    min-width: auto;
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-size: 0.875rem;
    font-weight: 500;
    transition: background var(--transition), opacity var(--transition);
}

.remove-row:hover,
.remove-row:active {
    background: #b91c1c;
    opacity: 0.95;
}

.success-email-msg {
    margin-top: 1rem;
}

.success-email-msg.text-error {
    color: var(--color-error);
}

.success-msg {
    color: var(--color-success);
    font-weight: 500;
}

.error-msg {
    color: var(--color-error);
    font-weight: 500;
}

.request-details-form .form-row {
    max-width: 24rem;
}

/* Footer */
.site-footer {
    text-align: center;
    padding: 1.5rem 2rem;
    background: #ffffff;
    color: var(--color-text-muted);
    font-size: 0.875rem;
    margin-top: 2.5rem;
    border-top: 1px solid var(--color-border);
}

/* Mobile & touch: responsive and touch targets */
@media (max-width: 640px) {
    .main-content {
        padding: 1rem;
    }
    .form-section {
        padding: 1.25rem 1rem;
    }
    .site-header {
        padding: 1.25rem 1.25rem 1rem;
    }
    .main-content > h1 {
        font-size: 1.5rem;
    }
    .children-grid {
        margin-left: -1rem;
        margin-right: -1rem;
        border-radius: 0;
        border-left: none;
        border-right: none;
    }
    .children-grid table {
        min-width: 520px;
    }
    .children-grid th,
    .children-grid td {
        padding: 0.6rem 0.5rem;
    }
}

/* Prefer reduced motion */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        transition-duration: 0.01ms !important;
    }
}