/*
  PM Copilot UI: modern, minimalist baseline
*/

/* -------------------------
   Theme tokens
-------------------------- */

:root {
  --bg: #f6f7fb;
  --surface: #ffffff;
  --surface-2: #fbfbfd;
  --text: #0f172a;
  --muted: #64748b;

  --border: rgba(15, 23, 42, 0.10);
  --shadow: 0 10px 30px rgba(2, 6, 23, 0.08);

  --primary: #2563eb;
  --primary-2: #1d4ed8;
  --danger: #dc2626;
  --success: #16a34a;
  --warning: #f59e0b;

  --radius: 14px;
  --radius-sm: 10px;
  --ring: 0 0 0 4px rgba(37, 99, 235, 0.15);
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0b1220;
    --surface: #0f172a;
    --surface-2: #111c33;
    --text: #e5e7eb;
    --muted: #9ca3af;

    --border: rgba(226, 232, 240, 0.10);
    --shadow: 0 10px 30px rgba(0, 0, 0, 0.45);

    --primary: #60a5fa;
    --primary-2: #3b82f6;
    --danger: #f87171;
    --success: #34d399;
    --warning: #fbbf24;

    --ring: 0 0 0 4px rgba(96, 165, 250, 0.18);
  }
}

/* -------------------------
   Base
-------------------------- */

* { box-sizing: border-box; }
html, body { height: 100%; }

body {
  margin: 0;
  background:
    radial-gradient(1200px 600px at 20% -10%, rgba(37, 99, 235, 0.18), transparent 55%),
    radial-gradient(900px 500px at 90% 0%, rgba(34, 211, 238, 0.14), transparent 55%),
    var(--bg);
  color: var(--text);
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Apple Color Emoji", "Segoe UI Emoji";
  line-height: 1.45;
}

a { color: inherit; text-decoration: none; }
a:hover { text-decoration: underline; }

h1 {
  margin: 0;
  font-size: 28px;
  letter-spacing: -0.03em;
}

.subtle {
  margin: 8px 0 0;
  color: var(--muted);
  font-size: 14px;
}

.container {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 18px;
}

.main {
  padding: 26px 0 60px;
}

/* -------------------------
   Topbar
-------------------------- */

.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  background: var(--surface); /* solid to avoid weird grey tint */
  border-bottom: 1px solid var(--border);
  backdrop-filter: none;
}

.topbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 14px 0;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 750;
  letter-spacing: -0.02em;
}

.brand-badge {
  width: 28px;
  height: 28px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--primary), color-mix(in srgb, var(--primary) 30%, #22c55e));
  box-shadow: var(--shadow);
}

.topbar-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

/* -------------------------
   Layout helpers
-------------------------- */

.page-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 14px;
  margin: 10px 0 18px;
}

.actions {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

/* button_to generates a <form> wrapper */
.actions form { margin: 0; }

/* spacers */
.spacer-12 { height: 12px; }
.spacer-18 { height: 18px; }
.spacer-24 { height: 24px; }

/* -------------------------
   Cards
-------------------------- */

.card {
  background: linear-gradient(180deg, var(--surface), var(--surface-2));
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.card-body { padding: 18px; }
.card-body + .card-body { border-top: 1px solid var(--border); }

.badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 10px;
  border-radius: 999px;
  border: 1px solid var(--border);
  font-size: 12px;
  color: var(--muted);
}

/* -------------------------
   Buttons
-------------------------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 12px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: color-mix(in srgb, var(--surface) 80%, transparent);
  color: var(--text);
  font-weight: 650;
  font-size: 14px;
  cursor: pointer;
  text-decoration: none;
  transition: transform 120ms ease, box-shadow 120ms ease, border-color 120ms ease;
}

.btn:hover {
  text-decoration: none;
  transform: translateY(-1px);
}

.btn:active { transform: translateY(0); }

.btn-primary {
  border-color: color-mix(in srgb, var(--primary) 35%, var(--border));
  background: linear-gradient(180deg, var(--primary), var(--primary-2));
  color: #ffffff;
}

.btn-danger {
  border-color: color-mix(in srgb, var(--danger) 35%, var(--border));
  background: color-mix(in srgb, var(--danger) 18%, var(--surface));
  color: var(--text);
}

.btn-sm {
  padding: 8px 10px;
  border-radius: 10px;
  font-size: 13px;
}

.btn-block {
  width: 100%;
  justify-content: center;
}

/* -------------------------
   Tables
-------------------------- */

.table-container {
  width: 100%;
  overflow-x: auto;
}

.table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
}

.table th, .table td {
  padding: 12px 14px;
  border-bottom: 1px solid var(--border);
}

.table thead th {
  white-space: nowrap;
  text-align: left;
  color: var(--muted);
  font-size: 12px;
  font-weight: 800;
  background: color-mix(in srgb, var(--surface) 90%, transparent);
}

.table tbody tr:hover td {
  background: color-mix(in srgb, var(--surface) 85%, transparent);
}

.table td {
  color: var(--text);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.table td.wrap {
  white-space: normal;
  overflow: visible;
  text-overflow: initial;
}

.table td.num, .table th.num, .num {
  text-align: right;
  font-variant-numeric: tabular-nums;
}

.table td.actions-cell {
  width: 180px;
  white-space: nowrap;
}

/* -------------------------
   Flash messages
-------------------------- */

.flash {
  margin: 0 0 16px;
  padding: 12px 14px;
  border-radius: 14px;
  border: 1px solid var(--border);
  background: color-mix(in srgb, var(--surface) 85%, transparent);
}

.flash.notice { border-color: color-mix(in srgb, var(--success) 35%, var(--border)); }
.flash.alert  { border-color: color-mix(in srgb, var(--danger) 35%, var(--border)); }

/* -------------------------
   Forms
-------------------------- */

label {
  display: block;
  margin: 14px 0 6px;
  font-size: 13px;
  font-weight: 650;
  color: var(--muted);
}

input, select, textarea {
  width: 100%;
  padding: 10px 12px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: color-mix(in srgb, var(--surface) 85%, transparent);
  color: var(--text);
  outline: none;
}

input:focus, select:focus, textarea:focus {
  box-shadow: var(--ring);
  border-color: color-mix(in srgb, var(--primary) 40%, var(--border));
}

.form-actions {
  margin-top: 16px;
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

/* -------------------------
   Dashboard KPI blocks
-------------------------- */

.kpi-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
}

@media (max-width: 900px) {
  .kpi-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 520px) {
  .kpi-grid { grid-template-columns: 1fr; }
}

.kpi {
  padding: 16px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: linear-gradient(180deg, var(--surface), var(--surface-2));
  box-shadow: var(--shadow);
}

.kpi-label,
.kpi .label {
  color: var(--muted);
  font-size: 12px;
  font-weight: 800;
  margin: 0 0 6px;
}

.kpi-value,
.kpi .value {
  font-size: 22px;
  font-weight: 900;
  letter-spacing: -0.02em;
  margin: 0;
}

.kpi-subtle,
.kpi .hint {
  margin-top: 8px;
  color: var(--muted);
  font-size: 13px;
}

.value.negative { color: var(--danger); }
.value.positive { color: var(--success); }

.progress {
  margin-top: 8px;
  height: 8px;
  border-radius: 999px;
  background: rgba(0, 0, 0, 0.06);
  overflow: hidden;
}

.progress-bar {
  height: 100%;
  background: var(--primary);
  width: 0%;
}

/* -------------------------
   Auth pages
-------------------------- */

.auth-shell {
  min-height: calc(100vh - 70px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 28px 16px;
}

.auth-card {
  width: 100%;
  max-width: 420px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  box-shadow: var(--shadow);
  padding: 18px;
}

.auth-header h1 {
  margin: 0;
  font-size: 22px;
  letter-spacing: -0.02em;
}

.auth-header .subtle { margin-top: 6px; }

.form {
  margin-top: 14px;
  display: grid;
  gap: 12px;
}

.field label {
  margin: 0 0 6px;
  font-size: 12px;
  font-weight: 800;
  color: var(--muted);
}

.input {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--surface);
  color: var(--text);
  outline: none;
}

.input:focus {
  box-shadow: var(--ring);
  border-color: color-mix(in srgb, var(--primary) 40%, var(--border));
}

.field-inline {
  display: flex;
  align-items: center;
  justify-content: flex-start;
  gap: 10px;
}

.field-inline input[type="checkbox"] {
  width: 16px;
  height: 16px;
  margin: 0;
  accent-color: var(--primary);
  cursor: pointer;
}

.field-inline label {
  margin: 0;
  font-size: 13px;
  font-weight: 700;
  color: var(--muted);
  cursor: pointer;
}

.hint {
  margin-top: 6px;
  font-size: 12px;
  color: var(--muted);
}

.form-errors {
  margin-top: 12px;
  border: 1px solid #fecaca;
  background: #fff1f2;
  border-radius: 12px;
  padding: 10px 12px;
}

.form-errors-title {
  font-weight: 900;
  font-size: 12px;
  margin-bottom: 6px;
}

.form-errors ul {
  margin: 0;
  padding-left: 18px;
  font-size: 12px;
}

.auth-footer {
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px solid var(--border);
}

.auth-links {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.auth-links .link {
  text-decoration: none;
  font-weight: 800;
  font-size: 13px;
}

.auth-links .link:hover { text-decoration: underline; }