/* style.css */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

:root {
    --accent:        #1a73e8;
    --accent-dark:   #1557b0;
    --accent-light:  #e8f0fe;
    --accent-grad:   linear-gradient(135deg, #1a73e8 0%, #1557b0 100%);
    --bg:            #f0f4ff;
    --card:          #ffffff;
    --text:          #1f2937;
    --text-muted:    #6b7280;
    --border:        #e5e7eb;
    --danger:        #dc2626;
    --danger-dark:   #b91c1c;
    --shadow:        0 2px 8px rgba(26,115,232,0.10);
    --shadow-lg:     0 8px 32px rgba(26,115,232,0.18);
    --radius:        10px;
    --radius-lg:     16px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

body {
    font-family: 'Inter', 'Segoe UI', system-ui, sans-serif;
    background: var(--bg);
    color: var(--text);
    min-height: 100vh;
    font-size: 15px;
    letter-spacing: 0.01em;
    -webkit-tap-highlight-color: transparent; /* kein blaues Highlight auf iOS */
}

/* ── Header ───────────────────────────────────────────── */
.header {
    background: var(--accent-grad);
    color: white;
    padding: 0;
    box-shadow: 0 2px 12px rgba(26,115,232,0.25);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-content {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 14px 24px;
    gap: 16px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 22px;
    font-weight: 700;
    letter-spacing: -0.02em;
}

.logo img {
    height: 38px;
    width: auto;
    object-fit: contain;
    border-radius: 6px;
}

.header-right { display: flex; align-items: center; gap: 16px; }

.admin-link a {
    color: rgba(255,255,255,0.9);
    text-decoration: none;
    font-weight: 500;
    font-size: 14px;
    padding: 6px 14px;
    border: 1px solid rgba(255,255,255,0.4);
    border-radius: 6px;
    transition: all 0.2s;
}
.admin-link a:hover { background: rgba(255,255,255,0.15); color: white; }

.logout-btn {
    background: rgba(255,255,255,0.15);
    border: 1px solid rgba(255,255,255,0.4);
    color: white;
    padding: 7px 16px;
    border-radius: 6px;
    cursor: pointer;
    font-size: 14px;
    font-weight: 500;
    transition: all 0.2s;
}
.logout-btn:hover { background: rgba(255,255,255,0.25); }

/* ── Main Layout – 3 Spalten auch auf iPad ────────────── */
.main-container {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 16px;
    max-width: 1400px;
    margin: 0 auto;
    padding: 20px 16px;
    min-height: calc(100vh - 68px);
}

/* iPad landscape (1024px) → weiterhin 3 Spalten */
@media (max-width: 1024px) {
    .main-container { grid-template-columns: 1fr 1fr 1fr; gap: 12px; padding: 14px 10px; }
}

/* iPad portrait (768px) → 3 Spalten, etwas kompakter */
@media (max-width: 820px) {
    .main-container { grid-template-columns: 1fr 1fr 1fr; gap: 8px; padding: 10px 8px; }
    .column-header  { font-size: 13px; padding: 12px 12px; }
    .content-list   { padding: 10px; }
}

/* Smartphone (unter 600px) → 1 Spalte */
@media (max-width: 599px) {
    .main-container { grid-template-columns: 1fr; gap: 12px; padding: 12px; }
    .header-content { padding: 12px 14px; }
    .logo           { font-size: 18px; }
}

.column {
    background: var(--card);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    border: 1px solid var(--border);
    min-height: 300px;
}

.column-header {
    padding: 14px 16px;
    background: var(--accent-grad);
    color: white;
    font-weight: 600;
    font-size: 14px;
    letter-spacing: 0.01em;
    flex-shrink: 0;
}

.content-list {
    padding: 12px;
    overflow-y: auto;
    flex: 1;
}

.placeholder {
    color: var(--text-muted);
    text-align: center;
    padding: 30px 10px;
    font-size: 13px;
}

/* ── Fächer ──────────────────────────────────────────── */
.fach-item {
    padding: 12px 14px;
    margin-bottom: 8px;
    background: var(--accent-light);
    border-left: 4px solid;
    border-radius: var(--radius);
    cursor: pointer;
    transition: all 0.2s;
    position: relative;
    -webkit-user-select: none;
    user-select: none;
}
.fach-item:active { transform: scale(0.98); opacity: 0.85; }
.fach-item:hover  { transform: translateX(3px); box-shadow: var(--shadow); }
.fach-item.selected { background: #dbeafe; }

.fach-name { font-weight: 600; font-size: 14px; margin-bottom: 4px; }

.fach-info-btn {
    background: #fef9c3;
    border: 1px solid #fde047;
    padding: 3px 8px;
    border-radius: 5px;
    cursor: pointer;
    font-size: 11px;
    font-weight: 500;
    transition: all 0.2s;
    margin-top: 5px;
    display: inline-block;
}
.fach-info-btn:hover { background: #fde047; }

/* ── Hausaufgaben Items ───────────────────────────────── */
.homework-item {
    padding: 12px 14px;
    margin-bottom: 8px;
    background: #f9fafb;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    cursor: pointer;
    transition: all 0.2s;
    -webkit-user-select: none;
    user-select: none;
}
.homework-item:active { transform: scale(0.98); opacity: 0.85; }
.homework-item:hover  { transform: translateY(-2px); box-shadow: var(--shadow); background: white; }

.homework-title { font-weight: 600; color: var(--text); margin-bottom: 4px; font-size: 13px; }
.homework-meta  { font-size: 11px; color: var(--text-muted); margin-top: 5px; }

.homework-tag {
    display: inline-block;
    background: var(--accent-light);
    color: var(--accent);
    padding: 2px 6px;
    border-radius: 4px;
    font-size: 10px;
    font-weight: 500;
    margin-right: 3px;
    margin-top: 4px;
}

/* ── Popups ──────────────────────────────────────────── */
.popup-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.45);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    animation: fadeIn 0.2s ease;
    padding: 16px;
}
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }

.popup-content {
    width: 100%;
    max-width: 640px;
    max-height: 88vh;
    overflow-y: auto;
    background: white;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    animation: slideUp 0.25s ease;
    position: relative;
}
@keyframes slideUp { from { transform: translateY(30px); opacity: 0; } to { transform: translateY(0); opacity: 1; } }

.popup-close {
    position: absolute;
    top: 14px;
    right: 14px;
    background: rgba(0,0,0,0.07);
    border: none;
    font-size: 20px;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    cursor: pointer;
    color: var(--text-muted);
    z-index: 10;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
    line-height: 1;
}
.popup-close:hover { color: var(--accent); background: var(--accent-light); transform: rotate(90deg); }

.popup-body { padding: 24px; }

/* ── Bilder im Popup – tippen zum Öffnen ─────────────── */
.popup-images {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(130px, 1fr));
    gap: 10px;
    margin-top: 16px;
}
.popup-images img {
    width: 100%;
    height: 110px;
    object-fit: cover;
    border-radius: 10px;
    cursor: pointer;
    border: 2px solid var(--border);
    transition: all 0.2s;
    -webkit-user-select: none;
    user-select: none;
    /* Touch-freundlich: kein Text-Highlight */
    -webkit-tap-highlight-color: transparent;
}
.popup-images img:active { opacity: 0.75; transform: scale(0.96); }
.popup-images img:hover  { border-color: var(--accent); transform: scale(1.03); }

/* Dokument-Links */
.popup-files { margin-top: 14px; }
.popup-file-link {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 14px;
    background: var(--accent-light);
    border-radius: 8px;
    color: var(--accent);
    text-decoration: none;
    font-weight: 500;
    font-size: 14px;
    margin-bottom: 8px;
    transition: all 0.2s;
}
.popup-file-link:hover { background: #dbeafe; }

/* Formatierter Text */
.hw-text b, .hw-text strong { font-weight: 700; color: var(--accent-dark); }
.hw-text u { text-decoration: underline; }

/* ── Breaking News ──────────────────────────────────────── */
.breaking-news-container {
    position: fixed;
    bottom: 20px;
    right: 16px;
    max-width: 340px;
    z-index: 999;
}

.breaking-news {
    background: linear-gradient(135deg, #dc2626 0%, #b91c1c 100%);
    color: white;
    padding: 12px 16px;
    border-radius: 10px;
    margin-bottom: 10px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 10px;
    box-shadow: 0 4px 14px rgba(220,38,38,0.35);
    animation: slideInRight 0.3s ease-out;
    font-size: 13px;
}
@keyframes slideInRight { from { transform: translateX(400px); opacity: 0; } to { transform: translateX(0); opacity: 1; } }

.breaking-news-close {
    background: none;
    border: none;
    color: white;
    font-size: 20px;
    cursor: pointer;
    opacity: 0.8;
    transition: opacity 0.2s;
    padding: 0;
    line-height: 1;
    flex-shrink: 0;
}
.breaking-news-close:hover { opacity: 1; }

/* ── Login Page ──────────────────────────────────────── */
.login-body { display: flex; align-items: center; justify-content: center; min-height: 100vh; }

.login-container { width: 100%; max-width: 420px; padding: 20px; }

.login-box {
    background: white;
    border-radius: var(--radius-lg);
    padding: 36px;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border);
}

.login-header {
    text-align: center;
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 28px;
    color: var(--text);
}

.login-form { display: flex; flex-direction: column; gap: 16px; }

.form-group { display: flex; flex-direction: column; gap: 6px; }
.form-group label { font-weight: 600; font-size: 13.5px; color: var(--text); }
.form-group input {
    padding: 11px 14px;
    border: 1.5px solid var(--border);
    border-radius: 8px;
    font-size: 15px;
    font-family: inherit;
    transition: all 0.2s;
    color: var(--text);
}
.form-group input:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px rgba(26,115,232,0.10); }

.error-message {
    background: #fee2e2;
    color: var(--danger);
    padding: 10px 14px;
    border-radius: 8px;
    font-size: 14px;
    margin-top: 10px;
    border: 1px solid #fca5a5;
}

/* ── Buttons ──────────────────────────────────────────── */
.btn {
    padding: 11px 22px;
    border: none;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    text-decoration: none;
    display: inline-block;
    text-align: center;
    font-family: inherit;
    -webkit-tap-highlight-color: transparent;
}
.btn-primary { background: var(--accent-grad); color: white; }
.btn-primary:hover  { transform: translateY(-1px); box-shadow: 0 4px 14px rgba(26,115,232,0.35); }
.btn-primary:active { transform: scale(0.97); }
.btn-secondary { background: #f3f4f6; color: var(--text); }
.btn-secondary:hover { background: #e5e7eb; }
.btn-danger { background: var(--danger); color: white; }
.btn-danger:hover { background: var(--danger-dark); }

/* ── Admin Panel ──────────────────────────────────────── */
.admin-container {
    display: flex;
    max-width: 1400px;
    margin: 0 auto;
    gap: 20px;
    padding: 24px 20px;
    min-height: calc(100vh - 68px);
}

.admin-sidebar {
    width: 230px;
    background: white;
    border-radius: var(--radius-lg);
    padding: 16px;
    height: fit-content;
    box-shadow: var(--shadow);
    border: 1px solid var(--border);
    position: sticky;
    top: 86px;
    flex-shrink: 0;
}

.admin-menu-btn {
    display: block;
    width: 100%;
    padding: 10px 13px;
    margin-bottom: 7px;
    background: #f3f4f6;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    text-align: left;
    transition: all 0.2s;
    font-weight: 500;
    font-size: 13px;
    font-family: inherit;
    color: var(--text);
}
.admin-menu-btn:hover, .admin-menu-btn.active {
    background: var(--accent-grad);
    color: white;
    transform: translateX(3px);
}

.admin-content {
    flex: 1;
    background: white;
    border-radius: var(--radius-lg);
    padding: 26px;
    box-shadow: var(--shadow);
    border: 1px solid var(--border);
    min-width: 0;
}

.admin-section { display: none; }
.admin-section.active { display: block; animation: fadeIn 0.2s ease; }
.admin-section h2 { margin-bottom: 20px; color: var(--text); font-size: 20px; letter-spacing: -0.02em; }

.admin-form {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-bottom: 24px;
}
.admin-form label { font-weight: 600; font-size: 13px; color: var(--text); }

.admin-form input,
.admin-form textarea,
.admin-select {
    padding: 10px 13px;
    border: 1.5px solid var(--border);
    border-radius: 8px;
    font-size: 14px;
    font-family: inherit;
    transition: all 0.2s;
    color: var(--text);
    width: 100%;
}
.admin-form input:focus,
.admin-form textarea:focus,
.admin-select:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px rgba(26,115,232,0.10); }
.admin-form input[type="color"] { height: 42px; cursor: pointer; padding: 4px; }

/* ── Upload Zone – iOS-Style, einfach antippen ──────── */
.upload-zone {
    border: 2px dashed var(--accent);
    border-radius: 12px;
    padding: 28px 20px;
    text-align: center;
    background: var(--accent-light);
    cursor: pointer;
    transition: all 0.2s;
    position: relative;
    -webkit-tap-highlight-color: transparent;
}
.upload-zone:hover, .upload-zone:focus-within { background: #dbeafe; border-color: var(--accent-dark); }
.upload-zone:active { transform: scale(0.98); }

/* Verstecktes File Input – aber TROTZDEM der ganze Bereich ist klickbar */
.upload-zone input[type="file"] {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    cursor: pointer;
    font-size: 0; /* verhindert iOS-Zoom */
}

.upload-zone-icon  { font-size: 36px; margin-bottom: 8px; pointer-events: none; }
.upload-zone-text  { color: var(--accent); font-weight: 700; font-size: 15px; pointer-events: none; }
.upload-zone-sub   { color: var(--text-muted); font-size: 12px; margin-top: 4px; pointer-events: none; }

.upload-preview {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 10px;
}
.upload-preview-item {
    padding: 5px 10px;
    background: white;
    border: 1px solid var(--border);
    border-radius: 6px;
    font-size: 12px;
    display: flex;
    align-items: center;
    gap: 6px;
}
.upload-preview-item button {
    background: none;
    border: none;
    cursor: pointer;
    color: var(--danger);
    font-size: 14px;
    line-height: 1;
    padding: 0;
}

/* ── Text Toolbar (Fett / Unterstrichen) ─────────────── */
.text-toolbar {
    display: flex;
    gap: 6px;
    margin-bottom: 6px;
}
.toolbar-btn {
    padding: 6px 14px;
    background: #f3f4f6;
    border: 1.5px solid var(--border);
    border-radius: 6px;
    cursor: pointer;
    font-size: 14px;
    transition: all 0.2s;
    font-family: inherit;
    min-width: 40px;
}
.toolbar-btn.bold-btn  { font-weight: 800; }
.toolbar-btn.under-btn { text-decoration: underline; font-weight: 600; }
.toolbar-btn:hover, .toolbar-btn.active {
    background: var(--accent-light);
    border-color: var(--accent);
    color: var(--accent);
}

.admin-list {
    background: #f9fafb;
    border-radius: 10px;
    padding: 12px;
    max-height: 320px;
    overflow-y: auto;
    border: 1px solid var(--border);
}

.admin-list-item {
    background: white;
    padding: 11px 13px;
    margin-bottom: 7px;
    border-radius: 8px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-left: 3px solid var(--accent);
    box-shadow: 0 1px 3px rgba(0,0,0,0.05);
    font-size: 13px;
    gap: 10px;
}

.admin-list-item-delete {
    background: var(--danger);
    color: white;
    border: none;
    padding: 5px 11px;
    border-radius: 5px;
    cursor: pointer;
    transition: all 0.2s;
    font-size: 12px;
    font-family: inherit;
    font-weight: 600;
    flex-shrink: 0;
}
.admin-list-item-delete:hover { background: var(--danger-dark); }

/* ── Toggle ───────────────────────────────────────────── */
.toggle-switch { display: flex; align-items: center; gap: 14px; margin-top: 8px; }

.toggle-input {
    appearance: none;
    -webkit-appearance: none;
    width: 52px;
    height: 28px;
    background: #d1d5db;
    border-radius: 14px;
    cursor: pointer;
    outline: none;
    transition: background 0.25s;
    position: relative;
    flex-shrink: 0;
}
.toggle-input:checked { background: var(--accent); }
.toggle-input::after {
    content: '';
    position: absolute;
    width: 22px;
    height: 22px;
    background: white;
    border-radius: 50%;
    top: 3px;
    left: 3px;
    transition: left 0.25s;
    box-shadow: 0 1px 4px rgba(0,0,0,0.2);
}
.toggle-input:checked::after { left: 27px; }

.toggle-text { font-weight: 600; color: var(--text); font-size: 15px; }
.info-text   { font-size: 12px; color: var(--text-muted); margin-top: 8px; }

/* ── Lightbox ─────────────────────────────────────────── */
.img-lightbox {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.9);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2000;
    cursor: zoom-out;
    padding: 16px;
}
.img-lightbox img {
    max-width: 100%;
    max-height: 90vh;
    border-radius: 10px;
    box-shadow: 0 20px 60px rgba(0,0,0,0.5);
    object-fit: contain;
}

/* ── Maintenance / 404 ─────────────────────────────────── */
.maintenance-container, .lock-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100vh;
    background: var(--accent-grad);
    color: white;
    text-align: center;
    font-family: 'Inter', sans-serif;
    padding: 20px;
}
.maintenance-icon, .lock-icon { font-size: 90px; margin-bottom: 20px; }
.maintenance-icon { animation: spin 3s linear infinite; }
.lock-icon        { animation: pulse 2s infinite; }
@keyframes spin   { to { transform: rotate(360deg); } }
@keyframes pulse  { 0%,100% { transform: scale(1); } 50% { transform: scale(1.1); } }

.loading-dots { margin-top: 20px; }
.loading-dots span {
    display: inline-block;
    width: 11px; height: 11px;
    margin: 0 4px;
    background: white;
    border-radius: 50%;
    animation: bounce 1.4s infinite;
}
.loading-dots span:nth-child(2) { animation-delay: 0.2s; }
.loading-dots span:nth-child(3) { animation-delay: 0.4s; }
@keyframes bounce { 0%,100% { transform: translateY(0); opacity: 0.5; } 50% { transform: translateY(-16px); opacity: 1; } }

.lock-content a {
    display: inline-block;
    margin-top: 28px;
    padding: 11px 28px;
    background: white;
    color: var(--accent);
    text-decoration: none;
    border-radius: 8px;
    font-weight: 700;
    transition: all 0.2s;
}
.lock-content a:hover { transform: translateY(-2px); box-shadow: 0 8px 20px rgba(0,0,0,0.25); }

/* ── Admin Responsive ─────────────────────────────────── */
@media (max-width: 900px) {
    .admin-container  { flex-direction: column; padding: 14px 10px; }
    .admin-sidebar    { width: 100%; position: static; }
    .admin-menu       { display: flex; flex-wrap: wrap; gap: 6px; }
    .admin-menu-btn   { width: auto; flex: 1 1 auto; min-width: 120px; text-align: center; }
}
@media (max-width: 599px) {
    .admin-content  { padding: 16px; }
    .admin-section h2 { font-size: 17px; }
}

/* ── Scrollbar ─────────────────────────────────────────── */
::-webkit-scrollbar       { width: 5px; }
::-webkit-scrollbar-track { background: #f0f0f0; }
::-webkit-scrollbar-thumb { background: var(--accent); border-radius: 3px; }

/* ── Checkbox Group ───────────────────────────────────── */
.checkbox-group { display: flex; flex-direction: column; gap: 8px; }
.checkbox-group label {
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 400;
    cursor: pointer;
    font-size: 14px;
}
.checkbox-group input[type="checkbox"] { width: 16px; height: 16px; cursor: pointer; accent-color: var(--accent); }