:root {
  --bg: #0f0f23; --card: #1a1a2e; --card2: #222240;
  --text: #e0e0e0; --text2: #8888aa;
  --primary: #4a7c59; --primary2: #3d6b4f;
  --red: #c44d4d; --orange: #d9974a;
  --border: #2a2a44; --radius: 10px;
  --accent: #4a7c59; --accent-light: #5d9a6f;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
body { background: var(--bg); color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  font-size: 15px; line-height: 1.5; }
.hidden { display: none !important; }
.view { max-width: 900px; margin: 0 auto; padding: 12px; min-height: 100vh; }

/* Login */
.login-card { max-width: 380px; margin: 80px auto; text-align: center;
  background: var(--card); border-radius: var(--radius); padding: 32px 24px; }
.login-card h1 { color: var(--accent-light); font-size: 28px; margin-bottom: 4px; }
.subtitle { color: var(--text2); margin-bottom: 24px; }
.login-card form { display: flex; flex-direction: column; gap: 12px; }
.login-card input { background: var(--bg); border: 1px solid var(--border); color: var(--text);
  border-radius: 8px; padding: 14px 16px; font-size: 16px; }
.btn-primary { background: var(--primary); color: #fff; border: none;
  border-radius: 8px; padding: 14px; font-size: 16px; cursor: pointer; font-weight: 600; width: 100%; }
.btn-primary:hover { background: var(--primary2); }
.error { color: var(--red); font-size: 14px; min-height: 20px; }

/* Topbar */
.topbar { display: flex; align-items: center; gap: 12px; padding: 10px 0 16px;
  border-bottom: 1px solid var(--border); margin-bottom: 16px; }
.brand { font-size: 20px; font-weight: 700; color: var(--accent-light); margin-right: auto; }
.status-pill { padding: 4px 12px; border-radius: 20px; font-size: 13px; font-weight: 600; }
.status-pill.working { background: rgba(74,124,89,0.3); color: var(--accent-light); }
.status-pill.break { background: rgba(217,151,74,0.3); color: var(--orange); }
.status-pill.idle { background: rgba(136,136,170,0.2); color: var(--text2); }
.btn-small { background: var(--card2); color: var(--text2); border: 1px solid var(--border);
  border-radius: 6px; padding: 6px 12px; font-size: 13px; cursor: pointer; }

/* Stats */
.stats-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: 10px; margin-bottom: 16px; }
.stat-card { background: var(--card); border-radius: var(--radius); padding: 14px 16px; }
.stat-label { color: var(--text2); font-size: 12px; text-transform: uppercase; letter-spacing: 0.5px; }
.stat-value { font-size: 22px; font-weight: 700; margin-top: 4px; }
.status-card.working .stat-value { color: var(--accent-light); }
.status-card.break .stat-value { color: var(--orange); }
.overtime.negative .stat-value { color: var(--red); }
.overtime.positive .stat-value { color: var(--accent-light); }

/* Banner */
.banner { background: rgba(217,151,74,0.15); border: 1px solid rgba(217,151,74,0.4);
  border-radius: var(--radius); padding: 12px 16px; margin-bottom: 16px;
  color: var(--orange); font-size: 14px; }

/* Chart */
.chart-container { background: var(--card); border-radius: var(--radius); padding: 16px; margin-bottom: 16px; }
.chart-container h3 { font-size: 15px; margin-bottom: 12px; color: var(--text); }
.chart-bars { display: flex; gap: 4px; align-items: flex-end; height: 120px; overflow-x: auto; }
.bar-col { flex: 1; min-width: 24px; display: flex; flex-direction: column; align-items: center; gap: 4px; }
.bar { width: 100%; border-radius: 4px 4px 0 0; background: var(--accent); min-height: 2px; transition: height 0.3s; }
.bar-label { font-size: 9px; color: var(--text2); }

/* Overview */
.overview-container { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-bottom: 16px; }
.overview-section { background: var(--card); border-radius: var(--radius); padding: 14px; }
.overview-section h3 { font-size: 15px; margin-bottom: 10px; }
.ov-row { display: flex; justify-content: space-between; padding: 4px 0;
  font-size: 13px; border-bottom: 1px solid var(--border); }
.ov-row:last-child { border-bottom: none; }
.ov-label { color: var(--text2); }
.ov-value { font-weight: 600; }

/* Filters */
.filter-bar { background: var(--card); border-radius: var(--radius); padding: 14px; margin-bottom: 12px; }
.filter-bar h3 { font-size: 15px; margin-bottom: 10px; }
.filter-row { display: flex; gap: 8px; flex-wrap: wrap; }
.date-input, .select-input { background: var(--bg); border: 1px solid var(--border); color: var(--text);
  border-radius: 6px; padding: 8px 10px; font-size: 14px; }
.btn-secondary { background: var(--card2); color: var(--text); border: 1px solid var(--border);
  border-radius: 6px; padding: 8px 14px; font-size: 14px; cursor: pointer; }
.btn-secondary:hover { border-color: var(--accent); }
.btn-danger { background: var(--red); color: #fff; border: none; border-radius: 6px;
  padding: 8px 14px; font-size: 14px; cursor: pointer; }

/* Sessions list */
.sessions-list { display: flex; flex-direction: column; gap: 8px; }
.session-item { background: var(--card); border-radius: var(--radius); padding: 14px 16px;
  display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }
.session-item.open { border-left: 3px solid var(--orange); }
.session-date { font-weight: 600; min-width: 100px; }
.session-time { color: var(--text2); font-size: 13px; }
.session-activity { padding: 2px 8px; border-radius: 12px; background: var(--card2); font-size: 12px; }
.session-duration { font-weight: 600; margin-left: auto; }
.session-actions { display: flex; gap: 6px; }

/* Modal */
.modal-overlay { position: fixed; inset: 0; background: rgba(0,0,0,0.7);
  display: flex; align-items: center; justify-content: center; z-index: 100; }
.modal { background: var(--card); border-radius: var(--radius); padding: 24px;
  max-width: 480px; width: 90%; max-height: 90vh; overflow-y: auto; }
.modal h2 { font-size: 20px; margin-bottom: 16px; color: var(--accent-light); }
.modal form { display: flex; flex-direction: column; gap: 12px; }
.modal input, .modal select, .modal textarea {
  background: var(--bg); border: 1px solid var(--border); color: var(--text);
  border-radius: 8px; padding: 10px 12px; font-size: 15px; }
.modal label { font-size: 13px; color: var(--text2); }
.modal-actions { display: flex; gap: 8px; margin-top: 8px; }
.modal-actions button { flex: 1; }

@media (max-width: 600px) {
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .overview-container { grid-template-columns: 1fr; }
  .stat-value { font-size: 18px; }
}