frontend/src/index.css

/* ═══════════════════════════════════════════════════════════
   OT Note Builder — Design System
   ═══════════════════════════════════════════════════════════ */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap');

/* ── CSS Custom Properties (Design Tokens) ── */

:root {
  /* Green accent palette */
  --accent-50: #ecfdf5;
  --accent-100: #d1fae5;
  --accent-200: #a7f3d0;
  --accent-300: #6ee7b7;
  --accent-400: #34d399;
  --accent-500: #10b981;
  --accent-600: #059669;
  --accent-700: #047857;
  --accent-800: #065f46;
  --accent-900: #064e3b;

  /* Neutrals */
  --neutral-50: #f9fafb;
  --neutral-100: #f3f4f6;
  --neutral-200: #e5e7eb;
  --neutral-300: #d1d5db;
  --neutral-400: #9ca3af;
  --neutral-500: #6b7280;
  --neutral-600: #4b5563;
  --neutral-700: #374151;
  --neutral-800: #1f2937;
  --neutral-900: #111827;
  --neutral-950: #030712;

  /* Semantic */
  --danger: #ef4444;
  --warning: #f59e0b;
  --info: #3b82f6;

  /* Typography */
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-xs: 0.75rem;
  --font-sm: 0.8125rem;
  --font-base: 0.875rem;
  --font-md: 1rem;
  --font-lg: 1.125rem;
  --font-xl: 1.25rem;
  --font-2xl: 1.5rem;
  --font-3xl: 1.875rem;

  /* Spacing */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;

  /* Radius */
  --radius-sm: 6px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 200ms ease;
  --transition-slow: 300ms ease;

  /* Layout */
  --sidebar-width: 280px;
  --navbar-height: 64px;
}

/* ── Theme Transition ── 
   Applied briefly via JS to create a single smooth crossfade.
   Without this class, theme swaps are instant (no jank). */

.theme-transitioning,
.theme-transitioning *,
.theme-transitioning *::before,
.theme-transitioning *::after {
  transition: background-color 400ms ease, color 400ms ease,
              border-color 400ms ease, box-shadow 400ms ease,
              fill 400ms ease, stroke 400ms ease !important;
}

/* ── Light Theme (default) ── */

[data-theme="light"] {
  color-scheme: light;
  --bg-primary: #ffffff;
  --bg-secondary: var(--neutral-50);
  --bg-tertiary: var(--neutral-100);
  --bg-elevated: #ffffff;
  --bg-overlay: rgba(0, 0, 0, 0.5);

  --text-primary: var(--neutral-900);
  --text-secondary: var(--neutral-600);
  --text-tertiary: var(--neutral-400);
  --text-inverse: #ffffff;

  --border-primary: var(--neutral-200);
  --border-secondary: var(--neutral-100);
  --border-focus: var(--accent-500);

  --surface-card: #ffffff;
  --surface-card-hover: var(--neutral-50);
  --surface-input: #ffffff;

  --glass-bg: rgba(255, 255, 255, 0.8);
  --glass-border: rgba(255, 255, 255, 0.3);

  --option-bg: var(--neutral-100);
  --option-hover: var(--neutral-200);
  --option-selected-bg: var(--accent-50);
  --option-selected-border: var(--accent-500);
  --option-selected-text: var(--accent-700);

  --checkbox-bg: var(--neutral-100);
  --checkbox-checked-bg: var(--accent-500);

  --scrollbar-track: var(--neutral-100);
  --scrollbar-thumb: var(--neutral-300);

  --sidebar-bg: var(--neutral-50);
  --navbar-bg: #ffffff;
  --navbar-border: var(--neutral-200);
}

/* ── Dark Theme ── */

[data-theme="dark"] {
  color-scheme: dark;
  --bg-primary: #0a0f1a;
  --bg-secondary: #0f1629;
  --bg-tertiary: #151d35;
  --bg-elevated: #1a2340;
  --bg-overlay: rgba(0, 0, 0, 0.7);

  --text-primary: #e8ecf4;
  --text-secondary: #94a3b8;
  --text-tertiary: #64748b;
  --text-inverse: #0a0f1a;

  --border-primary: #1e2d4a;
  --border-secondary: #162036;
  --border-focus: var(--accent-400);

  --surface-card: #111a30;
  --surface-card-hover: #162040;
  --surface-input: #0f1629;

  --glass-bg: rgba(17, 26, 48, 0.85);
  --glass-border: rgba(30, 45, 74, 0.5);

  --option-bg: #151d35;
  --option-hover: #1a2545;
  --option-selected-bg: rgba(16, 185, 129, 0.12);
  --option-selected-border: var(--accent-500);
  --option-selected-text: var(--accent-400);

  --checkbox-bg: #1a2340;
  --checkbox-checked-bg: var(--accent-500);

  --scrollbar-track: #0f1629;
  --scrollbar-thumb: #1e2d4a;

  --sidebar-bg: #0c1220;
  --navbar-bg: #0c1220;
  --navbar-border: #1e2d4a;
}

/* ── Global Reset ── */

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-family);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
}

#root {
  min-height: 100vh;
}

/* ── Instant theme swap — disables ALL transitions during toggle ── */
.theme-switching,
.theme-switching *,
.theme-switching *::before,
.theme-switching *::after {
  transition: none !important;
  animation-duration: 0s !important;
}

/* ── Scrollbar ── */

::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}

::-webkit-scrollbar-track {
  background: var(--scrollbar-track);
}

::-webkit-scrollbar-thumb {
  background: var(--scrollbar-thumb);
  border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--accent-500);
}

/* ═══════════════════════════════════════════════════════════
   Layout
   ═══════════════════════════════════════════════════════════ */

.app-layout {
  display: flex;
  min-height: 100vh;
}

/* ── Navbar ── */

.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--navbar-height);
  background: var(--navbar-bg);
  border-bottom: 1px solid var(--navbar-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--space-6);
  z-index: 100;
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
}

/* Hamburger — hidden on desktop */
.navbar__hamburger {
  display: none;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-md);
  background: var(--surface-card);
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--transition-fast);
  flex-shrink: 0;
}

.navbar__hamburger:hover {
  border-color: var(--accent-500);
  color: var(--accent-500);
}

/* Sidebar backdrop overlay — mobile only */
.sidebar-backdrop {
  display: none;
}

.navbar__brand {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.navbar__icon {
  width: 36px;
  height: 36px;
  background: linear-gradient(135deg, var(--accent-500), var(--accent-700));
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
}

.navbar__title {
  font-size: var(--font-lg);
  font-weight: 700;
  letter-spacing: -0.025em;
}

.navbar__title-accent {
  color: var(--accent-500);
}

.navbar__actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.navbar__btn {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-md);
  background: var(--surface-card);
  color: var(--text-primary);
  font-size: var(--font-sm);
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-fast);
  font-family: var(--font-family);
}

.navbar__btn:hover {
  border-color: var(--accent-500);
  color: var(--accent-500);
}

.navbar__btn--primary {
  background: linear-gradient(135deg, var(--accent-500), var(--accent-600));
  color: white;
  border-color: transparent;
}

.navbar__btn--primary:hover {
  background: linear-gradient(135deg, var(--accent-600), var(--accent-700));
  color: white;
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(16, 185, 129, 0.3);
}

.theme-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-md);
  background: var(--surface-card);
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.theme-toggle:hover {
  border-color: var(--accent-500);
  color: var(--accent-500);
}

/* ── Sidebar ── */

.sidebar {
  position: fixed;
  top: var(--navbar-height);
  left: 0;
  width: var(--sidebar-width);
  height: calc(100vh - var(--navbar-height));
  background: var(--sidebar-bg);
  border-right: 1px solid var(--border-primary);
  overflow-y: auto;
  padding: var(--space-4) 0;
  z-index: 50;
}

.sidebar__section-title {
  font-size: var(--font-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-tertiary);
  padding: var(--space-3) var(--space-5);
  margin-top: var(--space-2);
}

.sidebar__item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-5);
  cursor: pointer;
  transition: all var(--transition-fast);
  border-left: 3px solid transparent;
  color: var(--text-secondary);
  font-size: var(--font-sm);
  font-weight: 500;
  position: relative;
}

.sidebar__item:hover {
  background: var(--surface-card-hover);
  color: var(--text-primary);
}

.sidebar__item--active {
  background: var(--option-selected-bg);
  border-left-color: var(--accent-500);
  color: var(--accent-500);
}

.sidebar__item-icon {
  width: 20px;
  height: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.sidebar__item-label {
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.sidebar__item-badge {
  margin-left: auto;
  background: var(--accent-500);
  color: white;
  font-size: 10px;
  font-weight: 700;
  padding: 2px 6px;
  border-radius: var(--radius-full);
  min-width: 20px;
  text-align: center;
}

.sidebar__toggle-section {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-2) var(--space-5);
}

/* ── Main Content ── */

.main-content {
  margin-left: var(--sidebar-width);
  margin-top: var(--navbar-height);
  flex: 1;
  padding: var(--space-8);
  min-height: calc(100vh - var(--navbar-height));
  max-width: 960px;
}

/* ═══════════════════════════════════════════════════════════
   Section & Subsection Cards
   ═══════════════════════════════════════════════════════════ */

.section {
  margin-bottom: var(--space-8);
  animation: fadeInUp 0.4s ease;
}

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(12px); }
  to   { opacity: 1; transform: translateY(0); }
}

.section__header {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-6);
  padding-bottom: var(--space-4);
  border-bottom: 2px solid var(--accent-500);
}

.section__header-icon {
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, var(--accent-500), var(--accent-700));
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  flex-shrink: 0;
}

.section__title {
  font-size: var(--font-xl);
  font-weight: 700;
  letter-spacing: -0.025em;
}

.section__cpt {
  font-size: var(--font-sm);
  color: var(--accent-500);
  font-weight: 600;
  background: var(--option-selected-bg);
  padding: 2px 10px;
  border-radius: var(--radius-full);
  margin-left: auto;
}

.section__toggle {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.toggle-switch {
  position: relative;
  width: 44px;
  height: 24px;
  background: var(--neutral-300);
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: background var(--transition-fast);
}

[data-theme="dark"] .toggle-switch {
  background: var(--neutral-700);
}

.toggle-switch--active {
  background: var(--accent-500) !important;
}

.toggle-switch::after {
  content: '';
  position: absolute;
  top: 2px;
  left: 2px;
  width: 20px;
  height: 20px;
  background: white;
  border-radius: 50%;
  transition: transform var(--transition-fast);
  box-shadow: var(--shadow-sm);
}

.toggle-switch--active::after {
  transform: translateX(20px);
}

.subsection {
  background: var(--surface-card);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  margin-bottom: var(--space-4);
}

.subsection:hover {
  border-color: var(--accent-500);
  border-color: color-mix(in srgb, var(--accent-500) 40%, var(--border-primary));
}

.subsection__title {
  font-size: var(--font-base);
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--space-4);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.subsection__title-dot {
  width: 6px;
  height: 6px;
  background: var(--accent-500);
  border-radius: 50%;
  flex-shrink: 0;
}

/* ═══════════════════════════════════════════════════════════
   Field Components
   ═══════════════════════════════════════════════════════════ */

/* ── Fill Blank ── */

.fill-blank {
  margin-bottom: var(--space-5);
}

.fill-blank__label {
  font-size: var(--font-sm);
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: var(--space-2);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.fill-blank__sentence {
  font-size: var(--font-base);
  color: var(--text-primary);
  margin-bottom: var(--space-3);
  line-height: 1.7;
  padding: var(--space-3) var(--space-4);
  background: var(--bg-secondary);
  border-radius: var(--radius-md);
  border-left: 3px solid var(--accent-500);
}

.fill-blank__blank {
  color: var(--accent-500);
  font-weight: 600;
  border-bottom: 2px dashed var(--accent-400);
  padding: 0 var(--space-1);
}

.fill-blank__blank--filled {
  color: var(--accent-400);
  border-bottom-style: solid;
  background: var(--option-selected-bg);
  border-radius: 2px;
  padding: 1px var(--space-1);
}

.fill-blank__options {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.option-btn {
  padding: var(--space-2) var(--space-3);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-full);
  background: var(--option-bg);
  color: var(--text-secondary);
  font-size: var(--font-sm);
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-fast);
  font-family: var(--font-family);
  white-space: nowrap;
}

.option-btn:hover {
  background: var(--option-hover);
  color: var(--text-primary);
  border-color: var(--accent-400);
}

.option-btn--selected {
  background: var(--option-selected-bg);
  border-color: var(--option-selected-border);
  color: var(--option-selected-text);
  font-weight: 600;
}

.option-btn--selected:hover {
  background: var(--option-selected-bg);
  border-color: var(--accent-400);
}

/* ── Custom input inline ── */

.fill-blank__custom {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin-top: var(--space-2);
}

.fill-blank__custom-input {
  flex: 1;
  padding: var(--space-2) var(--space-3);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-full);
  background: var(--surface-input);
  color: var(--text-primary);
  font-size: var(--font-sm);
  font-family: var(--font-family);
  transition: border-color var(--transition-fast);
  max-width: 300px;
}

.fill-blank__custom-input:focus {
  outline: none;
  border-color: var(--accent-500);
  box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.1);
}

.fill-blank__custom-add {
  width: 32px;
  height: 32px;
  border: 1px solid var(--accent-500);
  border-radius: 50%;
  background: transparent;
  color: var(--accent-500);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--transition-fast);
  flex-shrink: 0;
}

.fill-blank__custom-add:hover {
  background: var(--accent-500);
  color: white;
}

/* ── Checkbox Group ── */

.checkbox-group {
  margin-bottom: var(--space-5);
}

.checkbox-group__label {
  font-size: var(--font-sm);
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: var(--space-2);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.checkbox-group__sentence {
  font-size: var(--font-base);
  color: var(--text-primary);
  margin-bottom: var(--space-3);
  line-height: 1.7;
  padding: var(--space-3) var(--space-4);
  background: var(--bg-secondary);
  border-radius: var(--radius-md);
  border-left: 3px solid var(--accent-500);
}

.checkbox-group__items {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.checkbox-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-md);
  background: var(--surface-card);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.checkbox-item:hover {
  border-color: var(--accent-400);
  background: var(--surface-card-hover);
}

.checkbox-item--checked {
  background: var(--option-selected-bg);
  border-color: var(--option-selected-border);
}

.checkbox-item__box {
  width: 20px;
  height: 20px;
  border: 2px solid var(--border-primary);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: all var(--transition-fast);
}

.checkbox-item--checked .checkbox-item__box {
  background: var(--accent-500);
  border-color: var(--accent-500);
  color: white;
}

.checkbox-item__label {
  font-size: var(--font-sm);
  color: var(--text-primary);
  font-weight: 500;
}

/* ── Exercise List ── */

.exercise-list {
  margin-bottom: var(--space-5);
}

.exercise-list__label {
  font-size: var(--font-sm);
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: var(--space-3);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.exercise-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-2) var(--space-3);
  border: 1px solid var(--border-secondary);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-2);
  transition: all var(--transition-fast);
  background: var(--surface-card);
}

.exercise-item--active {
  border-color: var(--accent-500);
  background: var(--option-selected-bg);
}

.exercise-item__toggle {
  width: 20px;
  height: 20px;
  border: 2px solid var(--border-primary);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  flex-shrink: 0;
  transition: all var(--transition-fast);
}

.exercise-item--active .exercise-item__toggle {
  background: var(--accent-500);
  border-color: var(--accent-500);
  color: white;
}

.exercise-item__name {
  flex: 1;
  font-size: var(--font-sm);
  color: var(--text-primary);
  font-weight: 500;
  cursor: pointer;
}

.exercise-item__inputs {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.exercise-item__input {
  width: 48px;
  padding: var(--space-1) var(--space-2);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-sm);
  background: var(--surface-input);
  color: var(--text-primary);
  font-size: var(--font-xs);
  text-align: center;
  font-family: var(--font-family);
  transition: border-color var(--transition-fast);
}

.exercise-item__input:focus {
  outline: none;
  border-color: var(--accent-500);
}

.exercise-item__separator {
  color: var(--text-tertiary);
  font-size: var(--font-xs);
  font-weight: 600;
}

.exercise-item__unit {
  color: var(--text-tertiary);
  font-size: var(--font-xs);
  min-width: 32px;
}

/* ── Text / Number Input ── */

.text-input {
  margin-bottom: var(--space-4);
}

.text-input__label {
  display: block;
  font-size: var(--font-sm);
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: var(--space-2);
}

.text-input__field {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-md);
  background: var(--surface-input);
  color: var(--text-primary);
  font-size: var(--font-base);
  font-family: var(--font-family);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.text-input__field:focus {
  outline: none;
  border-color: var(--accent-500);
  box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.1);
}

.text-input__field::placeholder {
  color: var(--text-tertiary);
}

.text-input__sentence {
  font-size: var(--font-sm);
  color: var(--text-tertiary);
  margin-top: var(--space-1);
  font-style: italic;
}

/* ── Static Text ── */

.static-text {
  padding: var(--space-4);
  background: var(--bg-secondary);
  border-radius: var(--radius-md);
  border-left: 3px solid var(--accent-500);
  margin-bottom: var(--space-4);
}

.static-text__content {
  font-size: var(--font-sm);
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ═══════════════════════════════════════════════════════════
   Header / Patient Info
   ═══════════════════════════════════════════════════════════ */

.patient-header {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4);
  margin-bottom: var(--space-6);
}

.patient-header .text-input__field {
  background: var(--surface-card);
}

/* ═══════════════════════════════════════════════════════════
   Abbreviation Reference
   ═══════════════════════════════════════════════════════════ */

.abbrev-panel {
  margin-bottom: var(--space-8);
}

.abbrev-category {
  margin-bottom: var(--space-4);
}

.abbrev-category__title {
  font-size: var(--font-xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent-500);
  margin-bottom: var(--space-2);
  padding-bottom: var(--space-1);
  border-bottom: 1px solid var(--border-secondary);
}

.abbrev-list {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.abbrev-chip {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 3px 10px;
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-full);
  font-size: var(--font-xs);
  background: var(--surface-card);
}

.abbrev-chip__abbr {
  font-weight: 700;
  color: var(--accent-500);
}

.abbrev-chip__meaning {
  color: var(--text-secondary);
}

/* ═══════════════════════════════════════════════════════════
   Preview / Generated Note Panel
   ═══════════════════════════════════════════════════════════ */

.preview-overlay {
  position: fixed;
  inset: 0;
  background: var(--bg-overlay);
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
  animation: fadeIn 0.2s ease;
}

@keyframes fadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}

.preview-panel {
  width: 90%;
  max-width: 800px;
  max-height: 90vh;
  background: var(--bg-elevated);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-xl);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-xl);
  animation: slideUp 0.3s ease;
}

@keyframes slideUp {
  from { opacity: 0; transform: translateY(20px); }
  to   { opacity: 1; transform: translateY(0); }
}

.preview-panel__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-5) var(--space-6);
  border-bottom: 1px solid var(--border-primary);
}

.preview-panel__title {
  font-size: var(--font-lg);
  font-weight: 700;
}

.preview-panel__close {
  width: 32px;
  height: 32px;
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-md);
  background: transparent;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.preview-panel__close:hover {
  border-color: var(--danger);
  color: var(--danger);
}

.preview-panel__body {
  flex: 1;
  overflow-y: auto;
  padding: var(--space-6);
}

.preview-panel__content {
  font-size: var(--font-base);
  line-height: 1.8;
  white-space: pre-wrap;
  color: var(--text-primary);
}

.preview-panel__content p {
  margin-bottom: var(--space-4);
}

.preview-panel__footer {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-4) var(--space-6);
  border-top: 1px solid var(--border-primary);
}

.preview-panel__footer .navbar__btn {
  flex: 1;
  justify-content: center;
}

/* ── Loading ── */

.loading-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--space-12);
  gap: var(--space-4);
}

.loading-spinner {
  width: 40px;
  height: 40px;
  border: 3px solid var(--border-primary);
  border-top-color: var(--accent-500);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

.loading-text {
  font-size: var(--font-sm);
  color: var(--text-secondary);
  font-weight: 500;
}

/* ═══════════════════════════════════════════════════════════
   Smart Phrases Panel
   ═══════════════════════════════════════════════════════════ */

.smart-phrases__list {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.smart-phrase {
  padding: var(--space-3) var(--space-4);
  background: var(--surface-card);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-md);
  font-size: var(--font-sm);
  color: var(--text-secondary);
  line-height: 1.6;
  display: flex;
  gap: var(--space-3);
  transition: all var(--transition-fast);
  cursor: pointer;
}

.smart-phrase:hover {
  border-color: var(--accent-500);
  background: var(--option-selected-bg);
}

.smart-phrase__number {
  color: var(--accent-500);
  font-weight: 700;
  flex-shrink: 0;
  min-width: 24px;
}

.smart-phrase__copy {
  margin-left: auto;
  color: var(--text-tertiary);
  flex-shrink: 0;
  transition: color var(--transition-fast);
}

.smart-phrase:hover .smart-phrase__copy {
  color: var(--accent-500);
}

/* ═══════════════════════════════════════════════════════════
   Custom Section Modal
   ═══════════════════════════════════════════════════════════ */

.modal-overlay {
  position: fixed;
  inset: 0;
  background: var(--bg-overlay);
  z-index: 300;
  display: flex;
  align-items: center;
  justify-content: center;
}

.modal {
  width: 90%;
  max-width: 500px;
  background: var(--bg-elevated);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  box-shadow: var(--shadow-xl);
}

.modal__title {
  font-size: var(--font-lg);
  font-weight: 700;
  margin-bottom: var(--space-5);
}

.modal__actions {
  display: flex;
  justify-content: flex-end;
  gap: var(--space-3);
  margin-top: var(--space-5);
}

/* ═══════════════════════════════════════════════════════════
   Responsive — Tablet (max 1024px)
   ═══════════════════════════════════════════════════════════ */

@media (max-width: 1024px) {
  /* Show hamburger menu button */
  .navbar__hamburger {
    display: flex;
  }

  /* Sidebar backdrop */
  .sidebar-backdrop {
    display: block;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.4);
    z-index: 85;
    backdrop-filter: blur(2px);
  }

  /* Sidebar -> overlay drawer */
  .sidebar {
    transform: translateX(-100%);
    transition: transform var(--transition-slow);
    z-index: 90;
    box-shadow: none;
  }

  .sidebar--open {
    transform: translateX(0);
    box-shadow: 4px 0 24px rgba(0, 0, 0, 0.2);
  }

  /* Main content takes full width */
  .main-content {
    margin-left: 0;
    padding: var(--space-6);
    max-width: 100%;
  }

  /* Navbar button labels can stay */
  .navbar {
    padding: 0 var(--space-4);
  }

  .navbar__actions {
    gap: var(--space-2);
  }

  /* Panels fill more screen */
  .preview-panel {
    width: 95%;
    max-width: 95%;
    max-height: 95vh;
  }
}

/* ═══════════════════════════════════════════════════════════
   Responsive — Mobile (max 768px)
   ═══════════════════════════════════════════════════════════ */

@media (max-width: 768px) {
  /* Navbar compact */
  .navbar {
    padding: 0 var(--space-2);
    height: 52px;
    overflow-x: hidden;
  }

  .navbar__brand {
    gap: var(--space-2);
    min-width: 0;
  }

  /* Hide the brand icon on mobile to save space */
  .navbar__icon--desktop {
    display: none;
  }

  .navbar__title {
    font-size: var(--font-sm);
    white-space: nowrap;
  }

  .navbar__actions {
    gap: 4px;
    flex-shrink: 0;
  }

  /* Hide only the label text — NOT all span children */
  .navbar__btn-label {
    display: none;
  }

  .navbar__btn {
    padding: 6px;
    min-width: 32px;
    min-height: 32px;
    justify-content: center;
  }

  /* Hide user pill on mobile */
  .navbar__user {
    display: none;
  }

  .theme-toggle {
    width: 32px;
    height: 32px;
    flex-shrink: 0;
  }

  .theme-toggle svg {
    width: 14px;
    height: 14px;
  }

  .navbar__hamburger {
    width: 32px;
    height: 32px;
  }

  /* Sidebar overlay width */
  .sidebar {
    width: 280px;
  }

  /* Main content */
  .main-content {
    padding: var(--space-3);
    margin-top: 52px;
  }

  /* Section header */
  .section__header {
    flex-wrap: wrap;
    gap: var(--space-2);
  }

  .section__header-icon {
    width: 32px;
    height: 32px;
  }

  .section__title {
    font-size: var(--font-lg);
    word-break: break-word;
  }

  .section__toggle {
    width: 100%;
    justify-content: flex-end;
  }

  /* Subsection cards */
  .subsection {
    padding: var(--space-3);
  }

  /* Patient info -> single column */
  .patient-header {
    grid-template-columns: 1fr;
    gap: var(--space-3);
  }

  /* Fill-blank sentence */
  .fill-blank__sentence {
    font-size: var(--font-sm);
    padding: var(--space-2) var(--space-3);
  }

  /* Options buttons — wrap naturally, touch-friendly */
  .option-btn {
    white-space: normal;
    text-align: left;
    padding: var(--space-2) var(--space-3);
    font-size: var(--font-xs);
    min-height: 36px;
  }

  .fill-blank__options {
    gap: var(--space-1);
  }

  /* Custom option input */
  .fill-blank__custom {
    flex-wrap: nowrap;
  }

  .fill-blank__custom-input {
    max-width: none;
    min-width: 0;
  }

  /* Exercise items — stack on mobile */
  .exercise-item {
    flex-wrap: wrap;
    gap: var(--space-2);
    padding: var(--space-2);
  }

  .exercise-item__name {
    flex-basis: calc(100% - 32px);
    font-size: var(--font-xs);
  }

  .exercise-item__inputs {
    width: 100%;
    padding-left: 32px;
    gap: var(--space-1);
  }

  .exercise-item__input {
    width: 40px;
    padding: var(--space-1);
  }

  /* Checkbox items touch-friendly */
  .checkbox-item {
    padding: var(--space-3);
  }

  .checkbox-item__label {
    font-size: var(--font-xs);
  }

  /* Abbreviation chips */
  .abbrev-chip {
    font-size: 10px;
    padding: 2px 6px;
  }

  /* Smart phrases */
  .smart-phrase {
    font-size: var(--font-xs);
    padding: var(--space-2) var(--space-3);
  }

  /* ── Preview / AI panels — true full screen on mobile ── */
  .preview-overlay {
    align-items: stretch;
  }

  .preview-panel {
    width: 100%;
    max-width: 100%;
    max-height: none;
    height: 100%;
    border-radius: 0;
    box-shadow: none;
  }

  .preview-panel__header {
    padding: var(--space-3) var(--space-4);
    position: sticky;
    top: 0;
    background: var(--bg-elevated);
    z-index: 10;
  }

  .preview-panel__body {
    padding: var(--space-3);
    flex: 1;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
  }

  .preview-panel__content {
    font-size: var(--font-sm);
    word-break: break-word;
  }

  .preview-panel__footer {
    padding: var(--space-3);
    flex-wrap: wrap;
    gap: var(--space-2);
    position: sticky;
    bottom: 0;
    background: var(--bg-elevated);
    z-index: 10;
  }

  .preview-panel__footer .navbar__btn {
    flex: 1 1 calc(50% - 4px);
    min-width: 0;
    justify-content: center;
    padding: var(--space-2) var(--space-3);
  }

  /* Modal */
  .modal {
    width: 95%;
    padding: var(--space-4);
  }

  .modal__title {
    font-size: var(--font-base);
  }

  /* Login card */
  .login-card {
    padding: var(--space-6);
    margin: var(--space-3);
    max-width: 100%;
  }

  .login-card__title {
    font-size: var(--font-xl);
  }

  /* Static text */
  .static-text {
    padding: var(--space-3);
    font-size: var(--font-xs);
  }

  .static-text__content {
    font-size: var(--font-xs);
    line-height: 1.6;
  }

  /* Text inputs — 16px prevents iOS zoom */
  .text-input__field {
    font-size: 16px;
  }

  .login-card__input {
    font-size: 16px;
  }
}

/* ═══════════════════════════════════════════════════════════
   Responsive — Small phones (max 420px)
   ═══════════════════════════════════════════════════════════ */

@media (max-width: 420px) {
  .navbar__title {
    font-size: 12px;
  }

  .navbar__hamburger {
    width: 28px;
    height: 28px;
  }

  .navbar__btn {
    padding: 5px;
    min-width: 28px;
    min-height: 28px;
  }

  .theme-toggle {
    width: 28px;
    height: 28px;
  }

  .main-content {
    padding: var(--space-2);
  }

  .section__title {
    font-size: var(--font-base);
  }

  .subsection {
    padding: var(--space-2);
    border-radius: var(--radius-md);
  }

  .option-btn {
    font-size: 11px;
    padding: 6px 10px;
  }

  .fill-blank__label {
    font-size: 11px;
  }

  .exercise-item__inputs {
    padding-left: 0;
  }

  .login-card {
    padding: var(--space-4);
    border-radius: var(--radius-lg);
  }

  .login-card__icon {
    width: 44px;
    height: 44px;
  }
}

/* ═══════════════════════════════════════════════════════════
   Utilities
   ═══════════════════════════════════════════════════════════ */

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

.section-disabled {
  opacity: 0.4;
  pointer-events: none;
}

.collapsible-trigger {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: var(--space-3) 0;
  border: none;
  background: transparent;
  color: var(--text-primary);
  font-size: var(--font-base);
  font-weight: 600;
  cursor: pointer;
  font-family: var(--font-family);
}

.collapsible-trigger__icon {
  transition: transform var(--transition-fast);
}

.collapsible-trigger__icon--open {
  transform: rotate(180deg);
}

.collapsible-content {
  overflow: hidden;
  transition: max-height var(--transition-slow);
}

/* ═══════════════════════════════════════════════════════════
   Login Page
   ═══════════════════════════════════════════════════════════ */

.login-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-primary);
  padding: var(--space-4);
  position: relative;
  overflow: hidden;
}

.login-page::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(
    ellipse at 30% 20%,
    rgba(16, 185, 129, 0.08) 0%,
    transparent 50%
  ),
  radial-gradient(
    ellipse at 70% 80%,
    rgba(16, 185, 129, 0.05) 0%,
    transparent 50%
  );
  pointer-events: none;
}

.login-card {
  width: 100%;
  max-width: 420px;
  background: var(--surface-card);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-xl);
  padding: var(--space-10);
  box-shadow: var(--shadow-xl);
  position: relative;
  z-index: 1;
  animation: loginFadeIn 0.5s ease;
}

@keyframes loginFadeIn {
  from { opacity: 0; transform: translateY(16px) scale(0.98); }
  to   { opacity: 1; transform: translateY(0) scale(1); }
}

.login-card__header {
  text-align: center;
  margin-bottom: var(--space-8);
}

.login-card__icon {
  width: 56px;
  height: 56px;
  background: linear-gradient(135deg, var(--accent-500), var(--accent-700));
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  margin: 0 auto var(--space-4);
  box-shadow: 0 8px 24px rgba(16, 185, 129, 0.25);
}

.login-card__title {
  font-size: var(--font-2xl);
  font-weight: 800;
  letter-spacing: -0.03em;
}

.login-card__title-accent {
  color: var(--accent-500);
}

.login-card__subtitle {
  font-size: var(--font-sm);
  color: var(--text-tertiary);
  margin-top: var(--space-1);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-weight: 500;
}

.login-card__form {
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
}

.login-card__error {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-4);
  background: rgba(239, 68, 68, 0.1);
  border: 1px solid rgba(239, 68, 68, 0.3);
  border-radius: var(--radius-md);
  color: #ef4444;
  font-size: var(--font-sm);
  font-weight: 500;
  animation: shakeError 0.4s ease;
}

@keyframes shakeError {
  0%, 100% { transform: translateX(0); }
  20% { transform: translateX(-6px); }
  40% { transform: translateX(6px); }
  60% { transform: translateX(-4px); }
  80% { transform: translateX(4px); }
}

.login-card__field {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.login-card__label {
  font-size: var(--font-sm);
  font-weight: 600;
  color: var(--text-secondary);
}

.login-card__input-wrap {
  display: flex;
  align-items: center;
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-md);
  background: var(--surface-input);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
  overflow: hidden;
}

.login-card__input-wrap:focus-within {
  border-color: var(--accent-500);
  box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.15);
}

.login-card__input-icon {
  margin-left: var(--space-3);
  color: var(--text-tertiary);
  flex-shrink: 0;
}

.login-card__input {
  flex: 1;
  padding: var(--space-3) var(--space-3);
  border: none;
  background: transparent;
  color: var(--text-primary);
  font-size: var(--font-base);
  font-family: var(--font-family);
  outline: none;
}

.login-card__input::placeholder {
  color: var(--text-tertiary);
}

.login-card__eye {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border: none;
  background: transparent;
  color: var(--text-tertiary);
  cursor: pointer;
  flex-shrink: 0;
  transition: color var(--transition-fast);
}

.login-card__eye:hover {
  color: var(--accent-500);
}

.login-card__submit {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  width: 100%;
  padding: var(--space-3) var(--space-4);
  border: none;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, var(--accent-500), var(--accent-600));
  color: white;
  font-size: var(--font-md);
  font-weight: 600;
  font-family: var(--font-family);
  cursor: pointer;
  transition: all var(--transition-fast);
  min-height: 44px;
}

.login-card__submit:hover:not(:disabled) {
  background: linear-gradient(135deg, var(--accent-600), var(--accent-700));
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(16, 185, 129, 0.3);
}

.login-card__submit:disabled {
  opacity: 0.7;
  cursor: not-allowed;
}

.login-card__spinner {
  width: 20px;
  height: 20px;
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-top-color: white;
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}

.login-card__footer {
  text-align: center;
  font-size: var(--font-xs);
  color: var(--text-tertiary);
  margin-top: var(--space-6);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

/* ── Logged-in user pill in navbar ── */

.navbar__user {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-1) var(--space-3);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-full);
  font-size: var(--font-xs);
  color: var(--text-secondary);
  font-weight: 500;
}

.navbar__user-name {
  color: var(--accent-500);
  font-weight: 600;
}

/* ── Loading Container ── */

.loading-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-4);
}

.loading-spinner {
  width: 40px;
  height: 40px;
  border: 3px solid var(--border-primary);
  border-top-color: var(--accent-500);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

.loading-text {
  font-size: var(--font-sm);
  color: var(--text-tertiary);
  font-weight: 500;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}