/* * style.css
 * Globale CSS-Stile für das Kursverwaltungs-Projekt.
*/

:root {
    --primary-color: #3B82F6; --primary-hover: #2563EB;
    --danger-color: #EF4444; --danger-hover: #DC2626;
    --secondary-color: #6B7280; --secondary-hover: #4B5563;
    --background-color: #F3F4F6; --form-background: #FFFFFF;
    --text-color: #1F2937; --border-color: #D1D5DB;
    --success-bg: #D1FAE5; --success-text: #065F46;
    --error-bg: #FEE2E2; --error-text: #991B1B;
    --status-planned: #E0E7FF; --status-planned-text: #3730A3;
    --status-active: #D1FAE5; --status-active-text: #065F46;
    --status-archived: #E5E7EB; --status-archived-text: #4B5563;
    --anwesend-color: #22C55E;
    --abwesend-color: #F97316;
    --entschuldigt-color: #A855F7;
}

body { font-family: 'Inter', sans-serif; background-color: var(--background-color); color: var(--text-color); margin: 0; padding: 0; }

/* --- Management-Layout --- */
.management-layout { display: grid; grid-template-columns: 240px 1fr; grid-template-rows: 100vh; height: 100vh; overflow: hidden; }
.sidebar-nav { background-color: var(--form-background); border-right: 1px solid var(--border-color); padding: 1.5rem; display: flex; flex-direction: column; }
.main-nav-side ul { list-style: none; padding: 0; margin: 2rem 0 0; display: flex; flex-direction: column; gap: 0.5rem; }
.main-nav-side a { display: block; padding: 0.75rem 1rem; text-decoration: none; color: var(--secondary-color); font-weight: 500; border-radius: 0.5rem; transition: background-color 0.2s, color 0.2s; }
.main-nav-side a:hover { background-color: #F3F4F6; color: var(--text-color); }
.main-nav-side a.active { background-color: var(--primary-color); color: white; }
.main-content-area { overflow-y: auto; height: 100vh; }
.management-layout .content-wrapper { padding: 0; }
.management-layout .content-frame { width: 100%; height: 100%; border: none; }

/* --- Haupt-Layout (verwaltung.php) --- */
.main-header { background-color: var(--form-background); padding: 0 2rem; border-bottom: 1px solid var(--border-color); display: flex; justify-content: space-between; align-items: center; height: 65px; }
.logo { font-size: 1.5rem; font-weight: 600; color: var(--text-color); }
.main-nav ul { margin: 0; padding: 0; list-style: none; display: flex; gap: 0.5rem; }
.main-nav a { display: block; padding: 0.75rem 1rem; text-decoration: none; color: var(--secondary-color); font-weight: 500; border-radius: 0.5rem; transition: background-color 0.2s, color 0.2s; }
.main-nav a:hover { background-color: #F3F4F6; color: var(--text-color); }
.main-nav a.active { background-color: var(--primary-color); color: white; }
.content-wrapper { padding: 2rem; }
.content-frame { width: 100%; height: calc(100vh - 65px - 4rem); border: none; }
.container { background-color: var(--form-background); padding: 2.5rem; border-radius: 0.75rem; box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05); width: 100%; max-width: 1024px; box-sizing: border-box; margin: 2rem auto; }
.table-container { max-width: 90vw; }
h1 { text-align: center; font-size: 1.875rem; font-weight: 600; margin-bottom: 1rem; }
.text-center { text-align: center; margin-bottom: 1.5rem; }

/* --- Stile für einklappbare Fieldsets --- */
.collapsible > legend { cursor: pointer; display: flex; justify-content: space-between; align-items: center; width: 100%; transition: color 0.3s; }
.collapsible > legend::after { content: '▲'; font-size: 0.8em; color: var(--secondary-color); transition: transform 0.3s ease, color 0.3s; }
.collapsible.collapsed > legend { color: var(--secondary-color); }
.collapsible.collapsed > legend::after { transform: rotate(180deg); color: var(--secondary-color); }
.collapsible .collapsible-content { padding-top: 1rem; transition: all 0.3s ease-in-out; overflow: hidden; }
.collapsible.collapsed .collapsible-content { display: none; }

/* --- Formular-Stile --- */
.form-columns { display: grid; grid-template-columns: 1fr; gap: 2rem; margin-bottom: 2rem; }
@media (min-width: 768px) { .form-columns { grid-template-columns: 1fr 1fr; } }
fieldset { border: 1px solid var(--border-color); border-radius: 0.5rem; padding: 1.5rem; margin-bottom: 2rem; }
.form-columns fieldset { margin-bottom: 0; }
legend { font-size: 1.25rem; font-weight: 600; padding: 0 0.5rem; color: var(--primary-color); }
.form-group { margin-bottom: 1.5rem; }
.grid-container { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
label { display: block; font-weight: 500; margin-bottom: 0.5rem; }
.input-field { width: 100%; padding: 0.75rem 1rem; border: 1px solid var(--border-color); border-radius: 0.5rem; box-sizing: border-box; font-size: 1rem; transition: border-color 0.2s, box-shadow 0.2s; }
.input-field:focus { outline: none; border-color: var(--primary-color); box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.3); }
.checkbox-group { display: flex; align-items: center; gap: 0.75rem; padding: 0.5rem; border: 1px solid var(--border-color); border-radius: 0.5rem; }
.checkbox-group input[type="checkbox"] { height: 1.25em; width: 1.25em; accent-color: var(--primary-color); }
.checkbox-group label { margin-bottom: 0; font-weight: 500; }
.required-indicator { display: none; color: var(--danger-color); margin-left: 0.25rem; font-weight: 600; }
.rhythm-group { display: flex; flex-wrap: wrap; gap: 1rem; padding: 0.5rem; border: 1px solid var(--border-color); border-radius: 0.5rem; }
.rhythm-group label { display: flex; align-items: center; gap: 0.5rem; margin-bottom: 0; }
#termin-liste { display: flex; flex-direction: column; gap: 0.75rem; margin-bottom: 1rem; }
.termin-item { display: flex; align-items: center; gap: 0.75rem; }
.delete-termin-btn { background-color: var(--danger-color); color: white; border: none; border-radius: 50%; width: 28px; height: 28px; font-size: 1.2rem; line-height: 1; cursor: pointer; transition: background-color 0.2s; flex-shrink: 0; }
.delete-termin-btn:hover { background-color: var(--danger-hover); }

/* --- Stile für Teilnehmer-Verwaltung im Kurs --- */
.participant-fieldset { border-color: var(--primary-color); }
.participant-table { width: 100%; margin-bottom: 1.5rem; }
.participant-table td { vertical-align: middle; }
.sub-fieldset { border: 1px solid var(--border-color); border-radius: 0.5rem; padding: 1rem; margin-top: 1.5rem; }
.sub-fieldset h4 { margin-top: 0; color: var(--secondary-color); }
.add-participant-form { display: flex; align-items: flex-end; gap: 1rem; flex-wrap: wrap; }
.add-participant-form.quick-add { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); align-items: flex-end; }
.add-participant-form .form-group { flex-grow: 1; margin-bottom: 0; }
.add-participant-form .btn-secondary { flex-shrink: 0; }
.inline-form { display: inline; margin: 0; }
label.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); border: 0; }
hr { border: 0; border-top: 1px solid var(--border-color); margin: 2rem 0; }

/* --- Stile für Anmelde-Link Sektion --- */
.registration-link-section { margin-bottom: 1.5rem; }
.registration-link-section h4 { margin-top: 0; margin-bottom: 0.5rem; color: var(--secondary-color); }
.link-container { display: flex; gap: 0.5rem; margin-bottom: 0.5rem; }
.link-container .input-field { background-color: #f9f9f9; cursor: text; }
.link-container .btn-secondary { flex-shrink: 0; padding: 0.5rem 0.75rem; }
.link-container .btn-secondary svg { display: block; width: 16px; height: 16px; }

/* --- Button-Stile --- */
.submit-btn, .btn-primary, .btn-secondary, .btn-danger { padding: 0.875rem 1.2rem; border: none; border-radius: 0.5rem; text-decoration: none; font-weight: 600; cursor: pointer; transition: background-color 0.2s; font-size: 1rem; text-align: center; color: white; }
.submit-btn { width: 100%; background-color: var(--primary-color); margin-top: 2rem; }
.submit-btn:hover { background-color: var(--primary-hover); }
.btn-primary { background-color: var(--primary-color); font-size: 1rem; padding: 0.6rem 1.2rem; }
.btn-primary:hover { background-color: var(--primary-hover); }
.btn-secondary { background-color: var(--secondary-color); }
.btn-secondary:hover { background-color: var(--secondary-hover); }
.btn-danger { background-color: var(--danger-color); }
.btn-danger:hover { background-color: var(--danger-hover); }

.message { padding: 1rem; margin-bottom: 1.5rem; border-radius: 0.5rem; text-align: center; }
.success { background-color: var(--success-bg); color: var(--success-text); }
.error { background-color: var(--error-bg); color: var(--error-text); }

/* --- Tabellen-Stile --- */
.table-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 1.5rem; flex-wrap: wrap; gap: 1rem; }
.table-header h1 { margin: 0; text-align: left; }
table { width: 100%; border-collapse: collapse; font-size: 0.95rem; }
th, td { padding: 1rem; text-align: left; border-bottom: 1px solid var(--border-color); vertical-align: middle; }
thead { background-color: #F9FAFB; }
th { font-weight: 600; color: #4B5563; }
th a { color: inherit; text-decoration: none; }
th a:hover { color: var(--primary-color); }
tbody tr:hover { background-color: #F9FAFB; }
.actions-cell { display: flex; align-items: center; gap: 1rem; }
.action-link { color: var(--primary-color); text-decoration: none; font-weight: 500; }
.action-link:hover { text-decoration: underline; }
.delete-btn { background: none; border: none; padding: 0; font-family: inherit; font-size: inherit; color: var(--danger-color); cursor: pointer; }
.delete-btn:hover { text-decoration: underline; }

/* --- Status-Indikatoren --- */
.status-badge { padding: 0.25rem 0.75rem; border-radius: 9999px; font-weight: 500; font-size: 0.8rem; white-space: nowrap; border: none; cursor: pointer; font-family: inherit; transition: background-color 0.2s, color 0.2s; }
.status-badge[data-status="1"] { background-color: var(--status-active); color: var(--status-active-text); }
.status-badge[data-status="0"] { background-color: var(--status-archived); color: var(--status-archived-text); }
.status-geplant { background-color: var(--status-planned); color: var(--status-planned-text); }
.status-aktiv { background-color: var(--status-active); color: var(--status-active-text); }
.status-archiviert, .status-abgesagt { background-color: var(--status-archived); color: var(--status-archived-text); }

/* --- Modal-Stile --- */
.modal { display: none; position: fixed; z-index: 1000; left: 0; top: 0; width: 100%; height: 100%; overflow: auto; background-color: rgba(0,0,0,0.6); }
.modal-content { background-color: #fff; margin: 15vh auto; max-width: 500px; border-radius: 0.75rem; box-shadow: 0 4px 8px 0 rgba(0,0,0,0.2),0 6px 20px 0 rgba(0,0,0,0.19); animation: animatetop 0.4s; overflow: hidden; }
@keyframes animatetop { from {transform: translateY(-50px); opacity: 0} to {transform: translateY(0); opacity: 1} }
.modal-header { padding: 1rem 1.5rem; background-color: var(--danger-color); color: white; display: flex; justify-content: space-between; align-items: center; }
.modal-header h2 { margin: 0; font-size: 1.25rem; }
.close-btn { color: white; font-size: 28px; font-weight: bold; cursor: pointer; }
.close-btn:hover, .close-btn:focus { color: #ddd; }
.modal-body { padding: 1.5rem; line-height: 1.6; }
.modal-body .warning { color: var(--error-text); font-weight: 500; margin-top: 1rem; }
.modal-footer { padding: 1rem 1.5rem; background-color: #f9f9f9; text-align: right; border-top: 1px solid var(--border-color); }
.modal-footer form { display: flex; justify-content: flex-end; gap: 0.75rem; }

/* --- Anwesenheitstabelle & Filter --- */
.filter-bar { display: flex; align-items: flex-end; gap: 1rem; padding: 1rem; background-color: #F9FAFB; border-radius: 0.5rem; margin-bottom: 1.5rem; flex-wrap: wrap; }
.filter-group { display: flex; flex-direction: column; gap: 0.25rem; }
.filter-group.search-group { flex-grow: 1; }
.filter-group label { font-size: 0.9rem; font-weight: 500; color: var(--secondary-color); }
.filter-group .input-field { padding: 0.5rem 0.75rem; font-size: 0.95rem; }
.filter-bar .btn-primary { padding: 0.5rem 1rem; font-size: 0.95rem; }

.attendance-table-wrapper { width: 100%; overflow-x: auto; border: 1px solid var(--border-color); border-radius: 0.5rem; }
.attendance-table th, .attendance-table td { text-align: center; white-space: nowrap; padding: 0.75rem; }
.attendance-table .sticky-col { position: sticky; left: 0; background-color: #F9FAFB; z-index: 1; text-align: left; font-weight: 500; }
tbody .sticky-col { background-color: var(--form-background); }
tbody tr:hover .sticky-col { background-color: #F3F4F6; }
.radio-group-attendance { display: flex; justify-content: center; align-items: center; gap: 0.5rem; }
.radio-group-attendance label { margin: 0; cursor: pointer; }
.radio-group-attendance input[type="radio"] { display: none; }
.radio-dot { display: inline-block; width: 20px; height: 20px; border-radius: 50%; border: 2px solid var(--border-color); transition: all 0.2s; }
.radio-dot.anwesend { border-color: var(--anwesend-color); }
.radio-dot.abwesend { border-color: var(--abwesend-color); }
.radio-dot.entschuldigt { border-color: var(--entschuldigt-color); }
.radio-group-attendance input[type="radio"]:checked + .radio-dot.anwesend { background-color: var(--anwesend-color); }
.radio-group-attendance input[type="radio"]:checked + .radio-dot.abwesend { background-color: var(--abwesend-color); }
.radio-group-attendance input[type="radio"]:checked + .radio-dot.entschuldigt { background-color: var(--entschuldigt-color); }
.course-selection-form { max-width: 500px; margin: 2rem auto 0; }
.guthaben-display { font-size: 0.8em; color: var(--secondary-color); margin-left: 0.5rem; white-space: nowrap; }
.guthaben-display.negativ { color: var(--danger-color); font-weight: 500; }
.today-column { background-color: var(--status-planned) !important; }

/* --- Stile für Zahlungsformular und Inline-Editing --- */
.add-payment-form { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 1rem; align-items: flex-end; }
.add-payment-form .btn-primary { grid-column: -1 / 1; }
@media (min-width: 768px) { .add-payment-form { grid-template-columns: 2fr 1fr 1fr 1fr auto; } .add-payment-form .btn-primary { grid-column: auto; } }
.inline-edit-input { width: 100%; padding: 0.25rem; font-size: inherit; font-family: inherit; border: 1px solid var(--primary-color); border-radius: 0.25rem; box-sizing: border-box; }