/* APS Platform — core styles */
:root {
  --bg: #f5f5f3;
  --surface: #ffffff;
  --surface-2: #f0efed;
  --border: #e2e1de;
  --border-strong: #c8c7c3;
  --text: #1a1a18;
  --text-2: #5a5a56;
  --text-3: #909089;
  --accent: #1a56db;
  --accent-bg: #eff4ff;
  --accent-border: #b4c9f9;
  --success: #0d7a4e;
  --success-bg: #ecfdf5;
  --success-border: #a7f0c9;
  --danger: #c42b2b;
  --danger-bg: #fef2f2;
  --danger-border: #fca5a5;
  --warning: #92580a;
  --warning-bg: #fffbeb;
  --warning-border: #fcd34d;
  --radius: 8px;
  --radius-lg: 12px;
  --shadow: 0 1px 3px rgba(0,0,0,0.08), 0 1px 2px rgba(0,0,0,0.04);
}

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

body {
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
  font-size: 14px;
  line-height: 1.5;
  min-height: 100vh;
}

/* Nav */
.nav {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  padding: 0 24px;
  display: flex;
  align-items: center;
  height: 56px;
  gap: 8px;
  position: sticky;
  top: 0;
  z-index: 100;
}
.nav-logo {
  font-weight: 700;
  font-size: 16px;
  color: var(--text);
  text-decoration: none;
  margin-right: 16px;
  letter-spacing: -0.3px;
}
.nav-logo span { color: var(--accent); }
.nav a {
  padding: 6px 12px;
  border-radius: var(--radius);
  text-decoration: none;
  color: var(--text-2);
  font-size: 13px;
  font-weight: 500;
  transition: background 0.12s, color 0.12s;
}
.nav a:hover { background: var(--surface-2); color: var(--text); }
.nav a.active { background: var(--accent-bg); color: var(--accent); }
.nav-spacer { flex: 1; }
.nav-user {
  font-size: 12px;
  color: var(--text-3);
  display: flex;
  align-items: center;
  gap: 6px;
}

/* Layout */
.page { max-width: 1100px; margin: 0 auto; padding: 32px 24px; }
.page-sm { max-width: 720px; margin: 0 auto; padding: 32px 24px; }

.page-header { margin-bottom: 28px; }
.page-header h1 { font-size: 22px; font-weight: 700; letter-spacing: -0.4px; }
.page-header p { color: var(--text-2); margin-top: 4px; font-size: 13px; }

/* Cards */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 20px;
  box-shadow: var(--shadow);
}
.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
}
.card-header h2 { font-size: 15px; font-weight: 600; }
.card-header p { font-size: 12px; color: var(--text-3); margin-top: 2px; }

/* Stat cards */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 12px;
  margin-bottom: 24px;
}
.stat-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 16px 20px;
  box-shadow: var(--shadow);
}
.stat-label { font-size: 11px; color: var(--text-3); font-weight: 500; text-transform: uppercase; letter-spacing: 0.06em; margin-bottom: 6px; }
.stat-value { font-size: 28px; font-weight: 700; letter-spacing: -0.5px; line-height: 1; }
.stat-sub { font-size: 11px; color: var(--text-3); margin-top: 4px; }
.stat-card.accent .stat-value { color: var(--accent); }
.stat-card.success .stat-value { color: var(--success); }
.stat-card.danger .stat-value { color: var(--danger); }
.stat-card.warning .stat-value { color: var(--warning); }

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  border-radius: var(--radius);
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  border: 1px solid transparent;
  transition: all 0.12s;
  text-decoration: none;
  white-space: nowrap;
}
.btn-primary { background: var(--accent); color: #fff; border-color: var(--accent); }
.btn-primary:hover { background: #1648c4; }
.btn-secondary { background: var(--surface); color: var(--text); border-color: var(--border-strong); }
.btn-secondary:hover { background: var(--surface-2); }
.btn-danger { background: var(--danger-bg); color: var(--danger); border-color: var(--danger-border); }
.btn-success { background: var(--success-bg); color: var(--success); border-color: var(--success-border); }
.btn:disabled { opacity: 0.45; cursor: not-allowed; }
.btn-lg { padding: 11px 20px; font-size: 14px; }
.btn-full { width: 100%; justify-content: center; }

/* Forms */
.form-group { margin-bottom: 16px; }
.form-label { display: block; font-size: 12px; font-weight: 500; color: var(--text-2); margin-bottom: 5px; }
.form-input, .form-select, .form-textarea {
  width: 100%;
  padding: 8px 12px;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius);
  font-size: 13px;
  font-family: inherit;
  background: var(--surface);
  color: var(--text);
  transition: border-color 0.12s;
}
.form-input:focus, .form-select:focus, .form-textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(26,86,219,0.1);
}
.form-textarea { resize: vertical; min-height: 100px; line-height: 1.5; }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.form-grid-3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 12px; }

/* Tables */
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: 13px; }
th {
  text-align: left;
  padding: 8px 12px;
  font-size: 11px;
  font-weight: 600;
  color: var(--text-3);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}
td { padding: 11px 12px; border-bottom: 1px solid var(--border); vertical-align: middle; }
tr:last-child td { border-bottom: none; }
tr:hover td { background: var(--bg); }

/* Badges */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 2px 8px;
  border-radius: 20px;
  font-size: 11px;
  font-weight: 600;
}
.badge-success { background: var(--success-bg); color: var(--success); border: 1px solid var(--success-border); }
.badge-danger { background: var(--danger-bg); color: var(--danger); border: 1px solid var(--danger-border); }
.badge-warning { background: var(--warning-bg); color: var(--warning); border: 1px solid var(--warning-border); }
.badge-accent { background: var(--accent-bg); color: var(--accent); border: 1px solid var(--accent-border); }
.badge-neutral { background: var(--surface-2); color: var(--text-2); border: 1px solid var(--border); }

/* Score ring */
.score-ring {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  font-size: 14px;
  font-weight: 700;
  border: 2.5px solid;
}
.score-ring.good { color: var(--success); border-color: var(--success); background: var(--success-bg); }
.score-ring.mid { color: var(--warning); border-color: var(--warning-border); background: var(--warning-bg); }
.score-ring.bad { color: var(--danger); border-color: var(--danger-border); background: var(--danger-bg); }

/* Progress bar */
.progress { background: var(--surface-2); border-radius: 99px; height: 6px; overflow: hidden; }
.progress-bar { height: 100%; border-radius: 99px; transition: width 0.4s; }
.progress-bar.good { background: var(--success); }
.progress-bar.mid { background: #f59e0b; }
.progress-bar.bad { background: var(--danger); }

/* Tabs */
.tabs { display: flex; gap: 2px; border-bottom: 1px solid var(--border); margin-bottom: 24px; }
.tab-btn {
  padding: 10px 16px;
  font-size: 13px;
  font-weight: 500;
  color: var(--text-3);
  background: none;
  border: none;
  cursor: pointer;
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
  transition: color 0.12s;
}
.tab-btn:hover { color: var(--text); }
.tab-btn.active { color: var(--accent); border-bottom-color: var(--accent); }
.tab-panel { display: none; }
.tab-panel.active { display: block; }

/* Upload zone */
.upload-zone {
  border: 2px dashed var(--border-strong);
  border-radius: var(--radius-lg);
  padding: 28px;
  text-align: center;
  cursor: pointer;
  transition: all 0.15s;
}
.upload-zone:hover, .upload-zone.drag { border-color: var(--accent); background: var(--accent-bg); }
.upload-zone.has-file { border-color: var(--success); background: var(--success-bg); }
.upload-zone .icon { font-size: 28px; margin-bottom: 8px; color: var(--text-3); }
.upload-zone.has-file .icon { color: var(--success); }
.upload-zone p { font-size: 13px; color: var(--text-2); }
.upload-zone .sub { font-size: 11px; color: var(--text-3); margin-top: 3px; }

/* Alerts */
.alert {
  padding: 12px 16px;
  border-radius: var(--radius);
  font-size: 13px;
  display: flex;
  align-items: flex-start;
  gap: 10px;
  margin-bottom: 16px;
}
.alert-danger { background: var(--danger-bg); border: 1px solid var(--danger-border); color: var(--danger); }
.alert-success { background: var(--success-bg); border: 1px solid var(--success-border); color: var(--success); }
.alert-warning { background: var(--warning-bg); border: 1px solid var(--warning-border); color: var(--warning); }
.alert-info { background: var(--accent-bg); border: 1px solid var(--accent-border); color: var(--accent); }

/* Divider */
.divider { height: 1px; background: var(--border); margin: 20px 0; }

/* Section label */
.section-label {
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-3);
  margin-bottom: 10px;
}

/* Trend arrows */
.trend-up { color: var(--success); }
.trend-down { color: var(--danger); }
.trend-flat { color: var(--text-3); }

/* Loading spinner */
.spinner {
  width: 20px; height: 20px;
  border: 2px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
  display: inline-block;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* Toast */
#toast {
  position: fixed;
  bottom: 24px;
  right: 24px;
  background: var(--text);
  color: #fff;
  padding: 12px 18px;
  border-radius: var(--radius);
  font-size: 13px;
  opacity: 0;
  transform: translateY(8px);
  transition: all 0.2s;
  z-index: 9999;
  max-width: 320px;
}
#toast.show { opacity: 1; transform: translateY(0); }
#toast.success { background: var(--success); }
#toast.error { background: var(--danger); }

/* SDR avatar */
.avatar {
  width: 32px; height: 32px;
  border-radius: 50%;
  background: var(--accent-bg);
  color: var(--accent);
  font-size: 12px;
  font-weight: 700;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

/* Responsive */
@media (max-width: 640px) {
  .page, .page-sm { padding: 16px; }
  .form-grid, .form-grid-3 { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: 1fr 1fr; }
  .nav { padding: 0 16px; gap: 4px; }
  .nav a { padding: 6px 8px; font-size: 12px; }
}