/* ═══════════════════════════════════════════════
   BREATHE — Main Stylesheet
   ═══════════════════════════════════════════════ */

:root {
  --bg:         #0e1117;
  --surface:    #161b27;
  --surface2:   #1e2535;
  --border:     #2a3348;
  --accent:     #4f8ef7;
  --accent2:    #7c5cfc;
  --text:       #e2e8f0;
  --text-muted: #7a8aa0;
  --success:    #4ade80;
  --warning:    #fbbf24;
  --danger:     #f87171;

  /* Stress level colours */
  --minimal:   #4ade80;
  --mild:      #86efac;
  --moderate:  #fbbf24;
  --severe:    #fb923c;
  --critical:  #f87171;

  --radius:     14px;
  --radius-sm:  8px;
  --shadow:     0 4px 24px rgba(0,0,0,.4);
  --transition: 0.2s ease;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', sans-serif;
  background: var(--bg);
  color: var(--text);
  font-size: 15px;
  line-height: 1.6;
  min-height: 100vh;
}

/* ── Utilities ───────────────────────────────── */
.hidden     { display: none !important; }
.mt-sm      { margin-top: 12px; }
.full-width { width: 100%; }

/* ── Screens ─────────────────────────────────── */
.screen { display: none; }
.screen.active { display: block; }

/* ══════════════════════════════════════════════
   AUTH
══════════════════════════════════════════════ */
.auth-bg {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background:
    radial-gradient(ellipse at 20% 30%, rgba(79,142,247,.15) 0%, transparent 60%),
    radial-gradient(ellipse at 80% 70%, rgba(124,92,252,.15) 0%, transparent 60%),
    var(--bg);
}

.auth-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 40px 36px;
  width: 100%;
  max-width: 420px;
  box-shadow: var(--shadow);
}

.brand {
  text-align: center;
  margin-bottom: 28px;
}
.brand-icon    { font-size: 2.8rem; display: block; margin-bottom: 6px; }
.brand-name    { font-size: 2rem; font-weight: 700; letter-spacing: .06em; color: var(--accent); }
.brand-tagline { color: var(--text-muted); font-size: .85rem; margin-top: 4px; }

/* Tabs */
.tab-bar {
  display: flex;
  background: var(--bg);
  border-radius: var(--radius-sm);
  padding: 4px;
  margin-bottom: 24px;
}
.tab {
  flex: 1;
  padding: 8px;
  border: none;
  border-radius: 6px;
  background: transparent;
  color: var(--text-muted);
  font-size: .9rem;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition);
}
.tab.active {
  background: var(--surface2);
  color: var(--text);
  box-shadow: 0 2px 8px rgba(0,0,0,.3);
}

/* Auth forms */
.auth-form { display: none; }
.auth-form.active { display: block; }

.field { margin-bottom: 16px; }
.field label {
  display: block;
  font-size: .82rem;
  font-weight: 500;
  color: var(--text-muted);
  margin-bottom: 6px;
  letter-spacing: .03em;
  text-transform: uppercase;
}
.field label small { text-transform: none; font-weight: 400; }

input[type="text"],
input[type="email"],
input[type="password"],
input[type="number"],
select,
textarea {
  width: 100%;
  padding: 10px 14px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  font-size: .92rem;
  font-family: inherit;
  outline: none;
  transition: border-color var(--transition);
}
input:focus, select:focus, textarea:focus {
  border-color: var(--accent);
}
select option { background: var(--surface); }
textarea { resize: vertical; }

.form-error {
  background: rgba(248,113,113,.12);
  border: 1px solid rgba(248,113,113,.4);
  border-radius: var(--radius-sm);
  color: var(--danger);
  padding: 10px 14px;
  font-size: .88rem;
  margin-bottom: 14px;
}

/* Buttons */
.btn-primary {
  padding: 11px 22px;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  border: none;
  border-radius: var(--radius-sm);
  color: #fff;
  font-size: .95rem;
  font-weight: 600;
  cursor: pointer;
  transition: opacity var(--transition), transform var(--transition);
}
.btn-primary:hover  { opacity: .9; transform: translateY(-1px); }
.btn-primary:active { opacity: 1;  transform: none; }

.btn-secondary {
  padding: 10px 20px;
  background: transparent;
  border: 1px solid var(--accent);
  border-radius: var(--radius-sm);
  color: var(--accent);
  font-size: .9rem;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition);
  display: inline-block;
}
.btn-secondary:hover { background: rgba(79,142,247,.1); }

.btn-ghost {
  background: transparent;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-muted);
  cursor: pointer;
  transition: var(--transition);
}
.btn-ghost:hover { color: var(--text); border-color: var(--text-muted); }
.btn-ghost.small { padding: 6px 12px; font-size: .82rem; }

/* ══════════════════════════════════════════════
   APP LAYOUT
══════════════════════════════════════════════ */
#app-screen { display: flex; min-height: 100vh; }

/* Sidebar */
.sidebar {
  width: 230px;
  background: var(--surface);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  padding: 20px 0;
  position: sticky;
  top: 0;
  height: 100vh;
  flex-shrink: 0;
}

.sidebar-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 0 20px 20px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 16px;
}
.brand-icon { font-size: 1.5rem; }
.brand-name-sm { font-size: 1.1rem; font-weight: 700; color: var(--accent); letter-spacing: .04em; }

.sidebar-nav { flex: 1; padding: 0 12px; }
.nav-item {
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  padding: 10px 12px;
  border: none;
  border-radius: var(--radius-sm);
  background: transparent;
  color: var(--text-muted);
  font-size: .9rem;
  font-weight: 500;
  cursor: pointer;
  margin-bottom: 4px;
  transition: var(--transition);
  text-align: left;
}
.nav-item:hover  { background: var(--surface2); color: var(--text); }
.nav-item.active { background: var(--surface2); color: var(--accent); }
.nav-icon        { font-size: 1rem; }

.sidebar-footer {
  padding: 16px 20px 0;
  border-top: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.user-info {
  display: flex;
  align-items: center;
  gap: 8px;
}
.user-avatar { font-size: 1.2rem; }
.user-name   { font-size: .88rem; font-weight: 500; color: var(--text); }

/* Main content */
.main-content {
  flex: 1;
  padding: 32px 36px;
  overflow-y: auto;
  max-width: 1100px;
}

.view { display: none; }
.view.active { display: block; }

/* Page header */
.page-header  { margin-bottom: 28px; }
.page-header h2 {
  font-size: 1.6rem;
  font-weight: 700;
  background: linear-gradient(90deg, var(--text), var(--text-muted));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}
.page-sub { color: var(--text-muted); margin-top: 4px; font-size: .9rem; }

/* ══════════════════════════════════════════════
   CARDS
══════════════════════════════════════════════ */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  margin-bottom: 20px;
  box-shadow: var(--shadow);
}
.card h3 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-muted);
  margin-bottom: 16px;
  text-transform: uppercase;
  letter-spacing: .06em;
  font-size: .8rem;
}

/* Stats row */
.stats-row {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 16px;
  margin-bottom: 20px;
}
.stat-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px 22px;
  transition: var(--transition);
}
.stat-card:hover { border-color: var(--accent); }
.stat-value {
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--accent);
  line-height: 1;
  margin-bottom: 6px;
}
.stat-label {
  font-size: .78rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: .05em;
}

/* Charts */
.chart-card { }
.chart-wrap { position: relative; height: 250px; }
.donut-wrap { max-width: 300px; height: 280px; margin: 0 auto; }

/* ══════════════════════════════════════════════
   ASSESSMENT FORM
══════════════════════════════════════════════ */
.section-card { margin-bottom: 20px; }

.section-title {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 6px;
}
.section-title h3 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text);
  text-transform: none;
  letter-spacing: 0;
  margin: 0;
}
.section-icon  { font-size: 1.2rem; }
.section-badge {
  font-size: .72rem;
  padding: 2px 8px;
  border-radius: 20px;
  font-weight: 500;
}
.section-badge.optional {
  background: rgba(122,138,160,.15);
  color: var(--text-muted);
  border: 1px solid rgba(122,138,160,.3);
}
.section-desc { color: var(--text-muted); font-size: .86rem; margin-bottom: 18px; }

.form-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 14px;
}

/* ══════════════════════════════════════════════
   RESULT CARD
══════════════════════════════════════════════ */
.result-card { }

.result-gauge-wrap {
  display: flex;
  justify-content: center;
  margin: 12px 0 20px;
}
.gauge-circle {
  position: relative;
  width: 160px;
  height: 160px;
}
.gauge-circle svg {
  width: 100%;
  height: 100%;
  transform: rotate(-90deg);
}
.gauge-bg  { fill: none; stroke: var(--surface2); stroke-width: 12; }
.gauge-arc {
  fill: none;
  stroke: var(--accent);
  stroke-width: 12;
  stroke-linecap: round;
  transition: stroke-dasharray 1s ease, stroke 0.5s ease;
}
.gauge-center {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}
.gauge-score { font-size: 1.8rem; font-weight: 700; color: var(--text); }
.gauge-label { font-size: .78rem; color: var(--text-muted); }

.result-details { display: flex; flex-direction: column; gap: 10px; margin-bottom: 12px; }
.result-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 14px;
  background: var(--surface2);
  border-radius: var(--radius-sm);
}
.result-key { font-size: .85rem; color: var(--text-muted); }
.result-val { font-size: .9rem; font-weight: 600; }

.result-advice {
  padding: 14px 16px;
  border-radius: var(--radius-sm);
  font-size: .9rem;
  line-height: 1.6;
  margin-top: 8px;
  border-left: 4px solid var(--accent);
  background: rgba(79,142,247,.07);
  color: var(--text);
}

/* Stress level colour helpers */
.level-minimal  { color: var(--minimal); }
.level-mild     { color: var(--mild); }
.level-moderate { color: var(--warning); }
.level-severe   { color: var(--severe); }
.level-critical { color: var(--critical); }

/* ══════════════════════════════════════════════
   ASSESSMENT LIST / HISTORY
══════════════════════════════════════════════ */
.assessment-list.full { max-height: none; }
.empty-state { color: var(--text-muted); text-align: center; padding: 32px 0; font-size: .92rem; }

.assessment-item {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 14px 16px;
  background: var(--surface2);
  border-radius: var(--radius-sm);
  margin-bottom: 10px;
  cursor: pointer;
  border: 1px solid transparent;
  transition: var(--transition);
}
.assessment-item:hover { border-color: var(--accent); }

.assess-badge {
  min-width: 90px;
  text-align: center;
  padding: 4px 12px;
  border-radius: 20px;
  font-size: .78rem;
  font-weight: 600;
}
.assess-date { font-size: .82rem; color: var(--text-muted); flex: 1; }
.assess-score {
  font-size: .88rem;
  font-weight: 600;
  color: var(--text-muted);
}
.assess-modality {
  font-size: .75rem;
  color: var(--text-muted);
  background: var(--bg);
  padding: 2px 8px;
  border-radius: 10px;
}

.level-bg-minimal  { background: rgba(74,222,128,.15); color: var(--minimal); }
.level-bg-mild     { background: rgba(134,239,172,.15); color: var(--mild); }
.level-bg-moderate { background: rgba(251,191,36,.15);  color: var(--warning); }
.level-bg-severe   { background: rgba(251,146,60,.15);  color: var(--severe); }
.level-bg-critical { background: rgba(248,113,113,.15); color: var(--critical); }

/* ── Pagination ──────────────────────────────── */
.pagination {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-top: 16px;
}
.page-btn {
  padding: 6px 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--surface);
  color: var(--text-muted);
  cursor: pointer;
  font-size: .85rem;
  transition: var(--transition);
}
.page-btn:hover, .page-btn.active {
  border-color: var(--accent);
  color: var(--accent);
}

/* ══════════════════════════════════════════════
   MODAL
══════════════════════════════════════════════ */
.modal { position: fixed; inset: 0; z-index: 100; display: flex; align-items: center; justify-content: center; }
.modal-backdrop { position: absolute; inset: 0; background: rgba(0,0,0,.6); backdrop-filter: blur(4px); }
.modal-box {
  position: relative;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 32px;
  width: 90%;
  max-width: 540px;
  max-height: 80vh;
  overflow-y: auto;
  box-shadow: var(--shadow);
  z-index: 1;
}
.modal-box h3 { font-size: 1.1rem; margin-bottom: 16px; }
.modal-close {
  position: absolute;
  top: 14px;
  right: 16px;
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 1.1rem;
  cursor: pointer;
}

.modal-kv { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.modal-kv-item { background: var(--surface2); padding: 10px 14px; border-radius: var(--radius-sm); }
.modal-kv-key  { font-size: .75rem; color: var(--text-muted); text-transform: uppercase; letter-spacing:.04em; }
.modal-kv-val  { font-size: .95rem; font-weight: 600; margin-top: 2px; }

/* ══════════════════════════════════════════════
   RESPONSIVE
══════════════════════════════════════════════ */
@media (max-width: 768px) {
  .sidebar { display: none; }
  .main-content { padding: 20px 16px; }
  .stats-row { grid-template-columns: repeat(2, 1fr); }
  .form-grid { grid-template-columns: 1fr; }
}