/* =============================================
   TRUEWEIGHT — Patient Panel Stylesheet
   ============================================= */
:root {
  --color-bg: #F8F7F4;
  --color-surface: #FFFFFF;
  --color-surface-2: #FAFAF8;
  --color-divider: #D8D4C8;
  --color-text: #1A1A18;
  --color-text-muted: #6B6B65;
  --color-text-faint: #AEADA6;
  --color-primary: #2D6B5E;
  --color-primary-hover: #1F4F46;
  --color-primary-highlight: #C8DBD7;
  --color-secondary: #2B3D5C;
  --color-error: #8B2035;
  --color-success: #2D6B5E;
  --shadow-sm: 0 1px 3px rgba(26,26,24,0.06);
  --shadow-md: 0 4px 16px rgba(26,26,24,0.08);
  --shadow-lg: 0 12px 40px rgba(26,26,24,0.12);
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.875rem;
  --transition: 180ms cubic-bezier(0.16,1,0.3,1);
  --space-1:.25rem;--space-2:.5rem;--space-3:.75rem;--space-4:1rem;
  --space-5:1.25rem;--space-6:1.5rem;--space-8:2rem;--space-10:2.5rem;
  --space-12:3rem;--space-16:4rem;
  --font-display:'Instrument Serif',Georgia,serif;
  --font-body:'Work Sans','Helvetica Neue',sans-serif;
  --sidebar-w: 240px;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 16px; }
body {
  font-family: var(--font-body);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  min-height: 100vh;
}
a { color: var(--color-primary); text-decoration: none; }
a:hover { color: var(--color-primary-hover); text-decoration: underline; }

/* ── UTILITY ── */
.text-muted { color: var(--color-text-muted); }
.text-sm { font-size: 0.875rem; }
.btn {
  display: inline-flex; align-items: center; gap: var(--space-2);
  padding: 0.625rem 1.25rem; border-radius: var(--radius-md);
  font-family: var(--font-body); font-size: 0.9375rem; font-weight: 500;
  border: 1px solid transparent; cursor: pointer;
  transition: var(--transition); text-decoration: none; white-space: nowrap;
}
.btn--primary {
  background: var(--color-primary); color: #fff; border-color: var(--color-primary);
}
.btn--primary:hover { background: var(--color-primary-hover); border-color: var(--color-primary-hover); }
.btn--ghost {
  background: transparent; color: var(--color-text); border-color: var(--color-divider);
}
.btn--ghost:hover { background: var(--color-surface-2); }
.btn--full { width: 100%; justify-content: center; }
.btn--sm { padding: 0.375rem 0.75rem; font-size: 0.8125rem; }
.form-group { margin-bottom: var(--space-4); }
.form-group label {
  display: block; font-size: 0.875rem; font-weight: 500;
  margin-bottom: var(--space-2); color: var(--color-text);
}
.form-input {
  width: 100%; padding: 0.625rem 0.875rem;
  border: 1px solid var(--color-divider); border-radius: var(--radius-md);
  font-family: var(--font-body); font-size: 0.9375rem;
  background: var(--color-surface); color: var(--color-text);
  transition: var(--transition);
}
.form-input:focus { outline: none; border-color: var(--color-primary); box-shadow: 0 0 0 3px var(--color-primary-highlight); }
.form-textarea { resize: vertical; min-height: 80px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-4); }
.form-error { color: var(--color-error); font-size: 0.875rem; margin-bottom: var(--space-3); }
.card {
  background: var(--color-surface); border-radius: var(--radius-lg);
  padding: var(--space-6); box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-divider);
}
.card__title { font-family: var(--font-display); font-size: 1.125rem; font-weight: 400; margin-bottom: var(--space-4); color: var(--color-text); }
.card--stat { text-align: center; }
.card--stat .card__label { font-size: 0.8125rem; color: var(--color-text-muted); text-transform: uppercase; letter-spacing: 0.5px; }
.card--stat .card__value { font-family: var(--font-display); font-size: 2rem; color: var(--color-primary); margin-top: var(--space-2); }
.card--stat .card__unit { font-size: 1rem; color: var(--color-text-muted); }

/* ── LOADING ── */
.loading-screen {
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  height: 100vh; gap: var(--space-4);
}
.loading-screen[hidden] { display: none !important; }
.loading-spinner {
  width: 32px; height: 32px; border: 3px solid var(--color-divider);
  border-top-color: var(--color-primary); border-radius: 50%;
  animation: spin 0.6s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ── AUTH VIEW ── */
.auth-view {
  display: flex; align-items: center; justify-content: center;
  min-height: 100vh; padding: var(--space-6);
}
.auth-view[hidden],
.app-view[hidden] { display: none !important; }
.auth-card {
  width: 100%; max-width: 400px; background: var(--color-surface);
  border-radius: var(--radius-lg); padding: var(--space-10);
  box-shadow: var(--shadow-lg); text-align: center;
}
.auth-logo { margin-bottom: var(--space-6); }
.auth-card h2 { font-family: var(--font-display); font-size: 1.5rem; font-weight: 400; }
.auth-sub { color: var(--color-text-muted); font-size: 0.9375rem; margin: var(--space-2) 0 var(--space-8); }
.auth-form { text-align: left; }
.auth-footer { margin-top: var(--space-6); font-size: 0.875rem; color: var(--color-text-muted); }
.auth-back { display: inline-block; margin-top: var(--space-3); font-size: 0.875rem; }

/* ── SIDEBAR ── */
.sidebar {
  position: fixed; top: 0; left: 0; width: var(--sidebar-w); height: 100vh;
  background: var(--color-text); color: var(--color-bg);
  display: flex; flex-direction: column; z-index: 100;
  transform: translateX(0); transition: transform 0.3s ease;
}
.sidebar__logo { padding: var(--space-6); border-bottom: 1px solid rgba(255,255,255,0.1); }
.sidebar__nav { flex: 1; padding: var(--space-4) 0; overflow-y: auto; }
.sidebar__link {
  display: flex; align-items: center; gap: var(--space-3);
  padding: 0.75rem var(--space-6); color: rgba(255,255,255,0.7);
  text-decoration: none; font-size: 0.9375rem; transition: var(--transition);
  border-left: 3px solid transparent;
}
.sidebar__link:hover, .sidebar__link.active {
  color: #fff; background: rgba(255,255,255,0.08); text-decoration: none;
}
.sidebar__link.active { border-left-color: var(--color-primary); }
.sidebar__footer { padding: var(--space-4) var(--space-4); border-top: 1px solid rgba(255,255,255,0.1); }
.sidebar__footer .btn { color: rgba(255,255,255,0.7); border-color: rgba(255,255,255,0.2); }
.sidebar__footer .btn:hover { color: #fff; border-color: rgba(255,255,255,0.4); }

/* ── MOBILE HEADER ── */
.mobile-header {
  display: none; position: fixed; top: 0; left: 0; right: 0; height: 56px;
  background: var(--color-text); color: #fff; z-index: 99;
  align-items: center; padding: 0 var(--space-4); gap: var(--space-3);
}
.mobile-header__menu {
  background: none; border: none; cursor: pointer; padding: var(--space-2); display: flex; flex-direction: column; gap: 4px;
}
.mobile-header__menu span { display: block; width: 20px; height: 2px; background: #fff; border-radius: 2px; }
.mobile-header__title { font-family: var(--font-display); font-size: 1.125rem; flex: 1; }
.mobile-header__badge {
  background: var(--color-primary); color: #fff; font-size: 0.75rem;
  padding: 2px 8px; border-radius: 10px;
}

/* ── MAIN CONTENT ── */
.app-view { display: flex; }
.main-content {
  margin-left: var(--sidebar-w); flex: 1; padding: var(--space-8);
  min-height: 100vh;
}
.page { display: none; }
.page.active { display: block; }
.page-header { margin-bottom: var(--space-8); }
.page-header h1 { font-family: var(--font-display); font-size: 1.75rem; font-weight: 400; }
.page-subtitle { color: var(--color-text-muted); font-size: 0.9375rem; margin-top: var(--space-1); }

/* ── DASHBOARD ── */
.dashboard-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--space-4); margin-bottom: var(--space-6); }
.dashboard-grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-6); }

/* ── TIMELINE ── */
.timeline { position: relative; }
.timeline-item {
  display: flex; gap: var(--space-4); padding-bottom: var(--space-5);
  position: relative; padding-left: var(--space-6);
}
.timeline-item::before {
  content: ''; position: absolute; left: 7px; top: 4px; bottom: 0;
  width: 2px; background: var(--color-divider);
}
.timeline-item:last-child::before { display: none; }
.timeline-dot {
  position: absolute; left: 2px; top: 4px;
  width: 12px; height: 12px; border-radius: 50%;
  background: var(--color-primary); border: 2px solid var(--color-surface);
}
.timeline-date { font-size: 0.75rem; color: var(--color-text-faint); }
.timeline-text { font-size: 0.875rem; color: var(--color-text); }

/* ── MESSAGING ── */
.messaging-layout { display: grid; grid-template-columns: 1fr; gap: var(--space-6); max-width: 700px; }
.message-bubble { padding: var(--space-3) var(--space-4); border-radius: var(--radius-lg); margin-bottom: var(--space-3); max-width: 80%; }
.message-bubble--patient { background: var(--color-primary-highlight); margin-right: auto; }
.message-bubble--doctor { background: var(--color-surface-2); margin-left: auto; border: 1px solid var(--color-divider); }
.message-meta { font-size: 0.75rem; color: var(--color-text-faint); margin-top: var(--space-1); }

/* ── CHART ── */
.chart-container { max-width: 100%; height: 250px; position: relative; }

/* ── RESPONSIVE ── */
@media (max-width: 900px) {
  .sidebar { transform: translateX(-100%); }
  .sidebar.sidebar--open { transform: translateX(0); }
  .mobile-header { display: flex; }
  .main-content { margin-left: 0; padding: var(--space-6); padding-top: calc(56px + var(--space-6)); }
  .dashboard-grid { grid-template-columns: repeat(2, 1fr); }
  .dashboard-grid-2 { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
}
@media (max-width: 640px) {
  .dashboard-grid { grid-template-columns: 1fr 1fr; gap: var(--space-3); }
  .main-content { padding: var(--space-4); padding-top: calc(56px + var(--space-4)); }
}