:root {
    --color-bg: #f4f5f7;
    --color-surface: #ffffff;
    --color-primary: #3a5ac4;
    --color-primary-dark: #2c44a0;
    --color-text: #1f2330;
    --color-muted: #6b7280;
    --color-border: #e2e4ea;
    --color-danger: #d64545;
    --color-success: #2f9e5b;
    --radius: 10px;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

* { box-sizing: border-box; }

body {
    margin: 0;
    background: var(--color-bg);
    color: var(--color-text);
}

a { color: var(--color-primary); text-decoration: none; }
a:hover { text-decoration: underline; }

.topbar {
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
}
.topbar-inner {
    max-width: 1000px;
    margin: 0 auto;
    padding: 14px 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.brand { font-weight: 700; font-size: 1.15rem; color: var(--color-text); }
.nav { display: flex; align-items: center; gap: 18px; }
.nav-user { color: var(--color-muted); font-size: 0.9rem; }
.btn-link { color: var(--color-danger); }

.container {
    max-width: 1000px;
    margin: 0 auto;
    padding: 28px 20px 60px;
}

.footer {
    text-align: center;
    color: var(--color-muted);
    font-size: 0.85rem;
    padding: 24px 0;
}

.alert {
    padding: 12px 16px;
    border-radius: var(--radius);
    margin-bottom: 20px;
    font-size: 0.95rem;
}
.alert-success { background: #e7f6ed; color: var(--color-success); border: 1px solid #bfe6cd; }
.alert-error { background: #fbe9e9; color: var(--color-danger); border: 1px solid #f3c7c7; }
.alert-info { background: #eaf0fd; color: var(--color-primary); border: 1px solid #c9d8f8; }

.card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 24px;
}

.page-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 20px;
}
.page-head h1 { font-size: 1.4rem; margin: 0; }

.btn {
    display: inline-block;
    background: var(--color-primary);
    color: #fff;
    border: none;
    padding: 10px 18px;
    border-radius: var(--radius);
    font-size: 0.95rem;
    cursor: pointer;
    text-decoration: none;
}
.btn:hover { background: var(--color-primary-dark); text-decoration: none; }
.btn.btn-secondary { background: var(--color-muted); }
.btn.btn-danger { background: var(--color-danger); }
.btn.btn-sm { padding: 6px 12px; font-size: 0.85rem; }

.form-group { margin-bottom: 16px; }
.form-group label { display: block; margin-bottom: 6px; font-weight: 600; font-size: 0.9rem; }
.form-control {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    font-size: 0.95rem;
    background: #fff;
}
.form-control:focus { outline: 2px solid var(--color-primary); }
.form-hint { color: var(--color-muted); font-size: 0.8rem; margin-top: 4px; }

.auth-card { max-width: 400px; margin: 40px auto; }
.auth-card h1 { font-size: 1.3rem; margin-top: 0; }
.auth-switch { text-align: center; margin-top: 16px; font-size: 0.9rem; color: var(--color-muted); }

.note-list { display: grid; gap: 14px; }
.note-item {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 16px 18px;
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 16px;
}
.note-item h3 { margin: 0 0 4px; font-size: 1.05rem; }
.note-item .note-meta { color: var(--color-muted); font-size: 0.8rem; margin-bottom: 6px; }
.note-item .note-preview { color: var(--color-text); font-size: 0.9rem; }
.note-actions { display: flex; gap: 8px; flex-shrink: 0; }

.empty-state {
    text-align: center;
    padding: 60px 20px;
    color: var(--color-muted);
}

/* Quill editor */
#editor-toolbar { border-radius: var(--radius) var(--radius) 0 0; }
#editor-container {
    background: #fff;
    border-radius: 0 0 var(--radius) var(--radius);
    min-height: 280px;
}
.ql-container { border-color: var(--color-border) !important; }
.ql-toolbar { border-color: var(--color-border) !important; }

/* Kalendář */
#calendar { background: var(--color-surface); border-radius: var(--radius); padding: 16px; border: 1px solid var(--color-border); }

.modal-overlay {
    position: fixed; inset: 0; background: rgba(0,0,0,0.4);
    display: none; align-items: center; justify-content: center; z-index: 50;
}
.modal-overlay.active { display: flex; }
.modal-box {
    background: #fff; border-radius: var(--radius); padding: 24px;
    width: 100%; max-width: 420px;
}
.modal-actions { display: flex; justify-content: flex-end; gap: 10px; margin-top: 18px; }

/* ============ Admin rozhraní ============ */
.topbar-admin { background: #1f2330; border-bottom-color: #1f2330; }
.topbar-admin .brand { color: #fff; }
.topbar-admin .nav a { color: #c9cdda; }
.topbar-admin .nav a:hover { color: #fff; }
.topbar-admin .nav-user { color: #8b91a5; }
.topbar-admin .nav-sep { color: #444a5e; }

.stat-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
    gap: 14px;
    margin-bottom: 24px;
}
.stat-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 18px;
}
.stat-card .stat-value { font-size: 1.8rem; font-weight: 700; }
.stat-card .stat-label { color: var(--color-muted); font-size: 0.85rem; }

.admin-table {
    width: 100%;
    border-collapse: collapse;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    overflow: hidden;
}
.admin-table th, .admin-table td {
    padding: 10px 14px;
    text-align: left;
    border-bottom: 1px solid var(--color-border);
    font-size: 0.9rem;
}
.admin-table th { background: #fafbfc; color: var(--color-muted); font-weight: 600; }
.admin-table tr:last-child td { border-bottom: none; }
.admin-table td.actions-cell { display: flex; gap: 6px; flex-wrap: wrap; }

.badge {
    display: inline-block;
    padding: 2px 9px;
    border-radius: 999px;
    font-size: 0.75rem;
    font-weight: 600;
}
.badge-admin { background: #fef0d9; color: #a3650b; }
.badge-user { background: #eaf0fd; color: var(--color-primary); }
.badge-blocked { background: #fbe9e9; color: var(--color-danger); }
.badge-active { background: #e7f6ed; color: var(--color-success); }
.badge-success { background: #e7f6ed; color: var(--color-success); }
.badge-fail { background: #fbe9e9; color: var(--color-danger); }

.search-bar { display: flex; gap: 10px; margin-bottom: 16px; }
.search-bar input { flex: 1; }

.detail-grid { display: grid; grid-template-columns: 2fr 1fr; gap: 20px; }
@media (max-width: 800px) { .detail-grid { grid-template-columns: 1fr; } }

.section-title { font-size: 1.05rem; margin: 28px 0 12px; }
.danger-zone { border: 1px solid #f3c7c7; background: #fff8f8; border-radius: var(--radius); padding: 18px; }
.danger-zone h3 { color: var(--color-danger); margin-top: 0; }