/* ═══════════════════════════════════════
   VuV Dashboard - Styles
   ═══════════════════════════════════════ */

:root {
  --primary: #2c3e50;
  --primary-light: #34495e;
  --accent: #3498db;
  --accent-hover: #2980b9;
  --success: #27ae60;
  --warning: #f39c12;
  --danger: #e74c3c;
  --bg: #f5f6fa;
  --card: #fff;
  --text: #2c3e50;
  --text-light: #7f8c8d;
  --border: #dcdde1;
  --shadow: 0 2px 8px rgba(0,0,0,0.08);
  --radius: 8px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
body { font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif; background: var(--bg); color: var(--text); line-height: 1.5; }

/* ─── Login ─── */
.login-screen { display: flex; justify-content: center; align-items: center; min-height: 100vh; background: linear-gradient(135deg, var(--primary), var(--primary-light)); }
.login-card { background: var(--card); padding: 2.5rem; border-radius: var(--radius); box-shadow: var(--shadow); width: 360px; text-align: center; }
.login-card h1 { color: var(--primary); margin-bottom: 0.25rem; }
.login-card .version { color: var(--text-light); margin-bottom: 1.5rem; font-size: 0.85rem; }
.login-card input { width: 100%; padding: 0.7rem 1rem; border: 1px solid var(--border); border-radius: var(--radius); margin-bottom: 0.75rem; font-size: 0.95rem; }
.login-card button { width: 100%; padding: 0.75rem; background: var(--accent); color: #fff; border: none; border-radius: var(--radius); font-size: 1rem; cursor: pointer; margin-top: 0.5rem; }
.login-card button:hover { background: var(--accent-hover); }
.error { color: var(--danger); font-size: 0.85rem; margin-top: 0.5rem; }

/* ─── Header ─── */
#app-header { background: var(--primary); color: #fff; padding: 0.75rem 1.5rem; display: flex; justify-content: space-between; align-items: center; }
.header-left { display: flex; align-items: center; gap: 1.5rem; }
.header-left h1 { font-size: 1.2rem; font-weight: 600; }
#mandant-select { padding: 0.35rem 0.75rem; border-radius: var(--radius); border: 1px solid rgba(255,255,255,0.3); background: rgba(255,255,255,0.15); color: #fff; font-size: 0.9rem; }
#mandant-select option { color: var(--text); background: var(--card); }
.header-right { display: flex; align-items: center; gap: 1rem; }
#user-name { font-size: 0.9rem; opacity: 0.9; }
.btn-flat { background: none; border: 1px solid rgba(255,255,255,0.4); color: #fff; padding: 0.35rem 0.75rem; border-radius: var(--radius); cursor: pointer; font-size: 0.85rem; }
.btn-flat:hover { background: rgba(255,255,255,0.15); }
.user-dropdown { position: relative; }
.user-dropdown-toggle { display: flex; align-items: center; gap: 0.25rem; }
.user-dropdown-menu { display: none; position: absolute; right: 0; top: 100%; margin-top: 0.35rem; background: var(--card); border-radius: var(--radius); box-shadow: 0 4px 16px rgba(0,0,0,0.15); min-width: 170px; z-index: 100; overflow: hidden; }
.user-dropdown-menu.open { display: block; }
.user-dropdown-menu button { display: block; width: 100%; text-align: left; padding: 0.65rem 1rem; border: none; background: none; font-size: 0.9rem; color: var(--text); cursor: pointer; }
.user-dropdown-menu button:hover { background: var(--bg); }

/* ─── Navigation ─── */
#main-nav { background: var(--card); border-bottom: 1px solid var(--border); padding: 0 1.5rem; display: flex; gap: 0; overflow-x: auto; }
.nav-btn { background: none; border: none; padding: 0.85rem 1.25rem; font-size: 0.9rem; color: var(--text-light); cursor: pointer; border-bottom: 3px solid transparent; white-space: nowrap; }
.nav-btn:hover { color: var(--text); }
.nav-btn.active { color: var(--accent); border-bottom-color: var(--accent); font-weight: 600; }

/* ─── Content ─── */
#content { padding: 1.5rem; max-width: 1400px; margin: 0 auto; }
.tab { display: none; }
.tab.active { display: block; }

/* ─── Cards / Panels ─── */
.card { background: var(--card); border-radius: var(--radius); box-shadow: var(--shadow); padding: 1.25rem; margin-bottom: 1rem; }
.card h3 { margin-bottom: 0.75rem; font-size: 1rem; color: var(--primary); }

.stats-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 1rem; margin-bottom: 1.5rem; }
.stat-card { background: var(--card); border-radius: var(--radius); box-shadow: var(--shadow); padding: 1.25rem; text-align: center; }
.stat-card .stat-value { font-size: 2rem; font-weight: 700; color: var(--accent); }
.stat-card .stat-label { font-size: 0.85rem; color: var(--text-light); margin-top: 0.25rem; }
.stat-card.stat-warn { border-left: 4px solid var(--warning); }
.mandant-logo { height: 28px; vertical-align: middle; margin-right: 0.5rem; }
.checkbox-group { display: flex; flex-wrap: wrap; gap: 0.5rem 1.25rem; padding: 0.5rem 0; }
.checkbox-label { display: flex; align-items: center; gap: 0.35rem; font-size: 0.9rem; cursor: pointer; }
.checkbox-label input[type="checkbox"] { width: 16px; height: 16px; accent-color: var(--accent); cursor: pointer; }

/* ─── Toolbar ─── */
.toolbar { display: flex; gap: 0.75rem; margin-bottom: 1rem; flex-wrap: wrap; align-items: center; }
.toolbar input, .toolbar select { padding: 0.5rem 0.75rem; border: 1px solid var(--border); border-radius: var(--radius); font-size: 0.9rem; }
.toolbar input { min-width: 200px; }

/* ─── Buttons ─── */
.btn { padding: 0.5rem 1rem; border: none; border-radius: var(--radius); cursor: pointer; font-size: 0.9rem; display: inline-flex; align-items: center; gap: 0.4rem; }
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-hover); }
.btn-success { background: var(--success); color: #fff; }
.btn-warning { background: var(--warning); color: #fff; }
.btn-danger { background: var(--danger); color: #fff; }
.btn-sm { padding: 0.3rem 0.6rem; font-size: 0.8rem; }
.btn-outline { background: none; border: 1px solid var(--border); color: var(--text); }
.btn-outline:hover { background: var(--bg); }

/* ─── Tables ─── */
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: 0.9rem; }
thead { background: var(--bg); }
th, td { padding: 0.65rem 0.75rem; text-align: left; border-bottom: 1px solid var(--border); }
th { font-weight: 600; color: var(--text-light); font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.03em; }
tr:hover { background: #f8f9fa; }
.clickable { cursor: pointer; }

/* ─── Status-Badges ─── */
.badge { padding: 0.2rem 0.6rem; border-radius: 12px; font-size: 0.75rem; font-weight: 600; display: inline-block; }
.badge-aktiv { background: #e8f5e9; color: #2e7d32; }
.badge-gekuendigt { background: #fff3e0; color: #e65100; }
.badge-ausgezogen { background: #fce4ec; color: #c62828; }
.badge-offen { background: #e3f2fd; color: #1565c0; }
.badge-bezahlt { background: #e8f5e9; color: #2e7d32; }
.badge-teilzahlung { background: #fff3e0; color: #e65100; }
.badge-belegt { background: #e8f5e9; color: #2e7d32; }
.badge-frei { background: #e3f2fd; color: #1565c0; }
.badge-eingegangen { background: #e8f5e9; color: #2e7d32; }
.badge-teilweise { background: #fff3e0; color: #e65100; }

/* ─── Modal ─── */
.modal-overlay { position: fixed; inset: 0; background: rgba(0,0,0,0.5); display: flex; justify-content: center; align-items: flex-start; padding-top: 5vh; z-index: 1000; overflow-y: auto; }
.modal { background: var(--card); border-radius: var(--radius); box-shadow: 0 8px 32px rgba(0,0,0,0.2); width: 90%; max-width: 700px; max-height: 85vh; overflow-y: auto; margin-bottom: 2rem; }
.modal-header { display: flex; justify-content: space-between; align-items: center; padding: 1rem 1.5rem; border-bottom: 1px solid var(--border); position: sticky; top: 0; background: var(--card); z-index: 1; }
.modal-header h2 { font-size: 1.1rem; }
.modal-close { background: none; border: none; font-size: 1.5rem; cursor: pointer; color: var(--text-light); padding: 0 0.25rem; }
.modal-body { padding: 1.5rem; }

/* ─── Forms ─── */
.form-group { margin-bottom: 1rem; }
.form-group label { display: block; font-size: 0.85rem; font-weight: 600; margin-bottom: 0.3rem; color: var(--text-light); }
.form-group input, .form-group select, .form-group textarea { width: 100%; padding: 0.55rem 0.75rem; border: 1px solid var(--border); border-radius: var(--radius); font-size: 0.9rem; }
.form-group textarea { resize: vertical; min-height: 60px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 0.75rem; }
.form-row-3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 0.75rem; }
.form-actions { display: flex; gap: 0.75rem; justify-content: flex-end; margin-top: 1.5rem; padding-top: 1rem; border-top: 1px solid var(--border); }

/* ─── Drag & Drop Zone ─── */
.drop-zone { border: 2px dashed var(--border); border-radius: var(--radius); padding: 2rem; text-align: center; color: var(--text-light); cursor: pointer; transition: all 0.2s; margin-bottom: 1rem; }
.drop-zone:hover, .drop-zone.dragover { border-color: var(--accent); background: rgba(52,152,219,0.05); color: var(--accent); }
.drop-zone p { margin-bottom: 0.5rem; }
.drop-zone small { font-size: 0.8rem; }

/* ─── Action Dropdown ─── */
.action-dropdown { position: relative; display: inline-block; }
.action-dropdown .dropdown-menu { display: none; position: absolute; right: 0; top: 100%; margin-top: 0.25rem; background: var(--card); border-radius: var(--radius); box-shadow: 0 4px 16px rgba(0,0,0,0.15); min-width: 180px; z-index: 50; overflow: hidden; }
.action-dropdown.open .dropdown-menu { display: block; }
.action-dropdown .dropdown-menu a { display: block; padding: 0.55rem 1rem; font-size: 0.85rem; color: var(--text); cursor: pointer; text-decoration: none; }
.action-dropdown .dropdown-menu a:hover { background: var(--bg); }

/* ─── Success Message ─── */
.success { color: var(--success); font-size: 0.85rem; margin-top: 0.5rem; }

/* ─── Responsive ─── */
@media (max-width: 768px) {
  .form-row, .form-row-3 { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  #app-header { flex-direction: column; gap: 0.5rem; }
  .toolbar { flex-direction: column; }
  .toolbar input { min-width: auto; width: 100%; }
}