/* ============================================================
   Term Talk Portal — Main Stylesheet
   Brand system v8.1 | DM Sans | Custom CSS design tokens
   ============================================================ */

/* 1. Google Fonts Import
   ============================================================ */
@import url('https://fonts.googleapis.com/css2?family=DM+Sans:ital,opsz,wght@0,9..40,400;0,9..40,500;0,9..40,700;1,9..40,400&display=swap');


/* 2. CSS Custom Properties
   ============================================================ */
:root {
  /* Brand colours */
  --color-blue:        #2E6DB4;
  --color-blue-dark:   #1E4F8A;
  --color-teal:        #4ECDC4;
  --color-teal-light:  #A8EDEA;
  --color-teal-faint:  #EBF9F8;

  /* Neutral colours */
  --color-ink:         #1A1A2E;
  --color-ink-muted:   #5A5A72;
  --color-ink-faint:   #9090A0;
  --color-surface:     #FFFFFF;
  --color-bg:          #F7F9FC;
  --color-border:      #E2E8F0;

  /* Semantic colours */
  --color-error:       #c0392b;
  --color-success:     #27ae60;
  --color-warning:     #f39c12;

  /* Border radius */
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-xl: 28px;

  /* Shadows — brand-blue tinted */
  --shadow-sm: 0 1px 4px rgba(46,109,180,0.07), 0 1px 2px rgba(0,0,0,0.04);
  --shadow-md: 0 4px 18px rgba(46,109,180,0.11), 0 2px 6px rgba(0,0,0,0.05);
  --shadow-lg: 0 12px 40px rgba(46,109,180,0.16), 0 4px 12px rgba(0,0,0,0.06);

  /* Typography */
  --font-sans: 'DM Sans', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

  --weight-regular: 400;
  --weight-medium:  500;
  --weight-bold:    700;

  --text-xs:   0.75rem;
  --text-sm:   0.875rem;
  --text-base: 1rem;
  --text-lg:   1.125rem;
  --text-xl:   1.25rem;
  --text-2xl:  1.5rem;
  --text-3xl:  1.875rem;
  --text-4xl:  2.25rem;
  --text-5xl:  3rem;

  --leading-tight:  1.15;
  --leading-snug:   1.35;
  --leading-normal: 1.6;
  --leading-loose:  1.75;

  --tracking-wide:   0.06em;
  --tracking-wider:  0.12em;

  /* Spacing scale (0.25rem unit) */
  --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;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;
  --section-gap: var(--space-20);

  /* Motion */
  --ease-out:        cubic-bezier(0.22, 1, 0.36, 1);
  --transition-fast: 150ms var(--ease-out);
  --transition-base: 250ms var(--ease-out);
  --transition:      var(--transition-fast);
}


/* 3. CSS Reset and Base
   ============================================================ */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  background-color: var(--color-bg);
  color: var(--color-ink);
  line-height: var(--leading-normal);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5, h6 {
  font-weight: var(--weight-bold);
  line-height: var(--leading-snug);
  margin-bottom: 0.5em;
  color: var(--color-ink);
}

h1 { font-size: var(--text-2xl); }
h2 { font-size: 1.4rem; }
h3 { font-size: var(--text-lg); }
h4 { font-size: var(--text-base); }
h5 { font-size: var(--text-sm); }
h6 { font-size: 0.85rem; }

p {
  margin-bottom: 1em;
}

p:last-child {
  margin-bottom: 0;
}

a {
  color: var(--color-blue);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

img,
svg {
  display: block;
  max-width: 100%;
}

ul,
ol {
  list-style: none;
}

button,
input,
select,
textarea {
  font-family: inherit;
}


/* 4. Layout Utilities
   ============================================================ */
.container {
  max-width: 1100px;
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--space-6);
  padding-right: var(--space-6);
}

.container-sm {
  max-width: 640px;
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--space-6);
  padding-right: var(--space-6);
}

.stack {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.row {
  display: flex;
  gap: var(--space-4);
  align-items: center;
}

.row-between {
  display: flex;
  gap: var(--space-4);
  align-items: center;
  justify-content: space-between;
}

.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-6);
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
}


/* 5. Navigation / Header
   ============================================================ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.88);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
  padding: 0 var(--space-6);
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.site-header .logo {
  text-decoration: none;
  display: flex;
  align-items: center;
}

.site-header .logo:hover {
  text-decoration: none;
}

.site-logo {
  height: 48px;
  width: auto;
  display: block;
}

.site-header nav {
  display: flex;
  gap: var(--space-4);
  align-items: center;
}

.nav-link {
  font-size: var(--text-sm);
  color: var(--color-ink-muted);
  text-decoration: none;
  padding: var(--space-1) var(--space-2);
  border-radius: var(--radius-sm);
  transition: color var(--transition-fast), background-color var(--transition-fast);
}

.nav-link:hover {
  color: var(--color-blue);
  background-color: rgba(46, 109, 180, 0.06);
  text-decoration: none;
}

.nav-link.active {
  color: var(--color-blue);
  font-weight: var(--weight-medium);
}


/* 6. Buttons
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: 0.6rem 1.25rem;
  border-radius: var(--radius-sm);
  font-family: var(--font-sans);
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  border: none;
  cursor: pointer;
  text-decoration: none;
  transition: background-color var(--transition-fast), color var(--transition-fast), box-shadow var(--transition-base), transform var(--transition-base), filter var(--transition-fast), border-color var(--transition-fast);
  line-height: 1;
  white-space: nowrap;
}

.btn:hover {
  text-decoration: none;
}

/* Primary */
.btn-primary {
  background-color: var(--color-blue);
  color: white;
}

.btn-primary:hover {
  background-color: var(--color-blue-dark);
  transform: translateY(-1px);
  box-shadow: var(--shadow-sm);
  color: white;
}

.btn-primary:active {
  transform: none;
  box-shadow: none;
}

/* Secondary */
.btn-secondary {
  background: transparent;
  color: var(--color-blue);
  border: 1.5px solid var(--color-blue);
}

.btn-secondary:hover {
  background-color: rgba(46, 109, 180, 0.06);
  color: var(--color-blue);
}

/* Accent (teal) */
.btn-accent {
  background-color: var(--color-teal);
  color: white;
}

.btn-accent:hover {
  filter: brightness(1.05);
  color: white;
}

/* Ghost */
.btn-ghost {
  background: transparent;
  color: var(--color-ink-muted);
  border: 1.5px solid var(--color-border);
}

.btn-ghost:hover {
  background-color: var(--color-bg);
  border-color: var(--color-ink-faint);
  color: var(--color-ink-muted);
}

/* Danger */
.btn-danger {
  background-color: var(--color-error);
  color: white;
}

.btn-danger:hover {
  filter: brightness(1.1);
  color: white;
}

/* Sizes */
.btn-sm {
  padding: 0.5rem 1rem;
  font-size: var(--text-sm);
}

.btn-lg {
  padding: 0.8rem 1.75rem;
  font-size: var(--text-base);
}

/* Disabled */
.btn:disabled,
.btn[disabled] {
  opacity: 0.5;
  cursor: not-allowed;
  pointer-events: none;
}


/* 7. Cards
   ============================================================ */
.card {
  background-color: var(--color-surface);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
  padding: var(--space-6);
}

.card-header {
  margin-bottom: var(--space-4);
  padding-bottom: var(--space-4);
  border-bottom: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.card-title {
  font-size: var(--text-base);
  font-weight: var(--weight-bold);
  color: var(--color-ink);
  margin-bottom: 0;
}

.card-footer {
  margin-top: var(--space-4);
  padding-top: var(--space-4);
  border-top: 1px solid var(--color-border);
}

.card-tool {
  position: relative;
  transition: box-shadow var(--transition-base), transform var(--transition-base);
  cursor: pointer;
}

.card-tool:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.card-tool.locked {
  opacity: 0.8;
}

.card-tool.locked::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: var(--radius-md);
  background: rgba(247, 249, 252, 0.35);
  pointer-events: none;
}


/* 8. Forms / Inputs
   ============================================================ */
.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  margin-bottom: var(--space-4);
}

label {
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  color: var(--color-ink);
}

.input,
input[type="text"],
input[type="email"],
input[type="password"],
input[type="number"],
input[type="search"],
input[type="url"],
select,
textarea {
  width: 100%;
  padding: 0.65rem 0.9rem;
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-family: var(--font-sans);
  font-size: var(--text-sm);
  color: var(--color-ink);
  background-color: white;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
  outline: none;
  appearance: none;
  -webkit-appearance: none;
}

.input:focus,
input[type="text"]:focus,
input[type="email"]:focus,
input[type="password"]:focus,
input[type="number"]:focus,
input[type="search"]:focus,
input[type="url"]:focus,
select:focus,
textarea:focus {
  border-color: var(--color-blue);
  box-shadow: 0 0 0 3px rgba(46, 109, 180, 0.12);
}

.input::placeholder,
input::placeholder,
textarea::placeholder {
  color: var(--color-ink-faint);
}

select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath fill='%239090a0' d='M1 1l5 5 5-5'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.9rem center;
  padding-right: 2.25rem;
  cursor: pointer;
}

textarea {
  resize: vertical;
  min-height: 80px;
  line-height: var(--leading-normal);
}

.form-hint {
  font-size: var(--text-xs);
  color: var(--color-ink-faint);
}

.form-error {
  font-size: var(--text-xs);
  color: var(--color-error);
}

.input-error,
input.input-error,
textarea.input-error,
select.input-error {
  border-color: var(--color-error);
}

.input-error:focus,
input.input-error:focus,
textarea.input-error:focus,
select.input-error:focus {
  box-shadow: 0 0 0 3px rgba(192, 57, 43, 0.12);
}


/* 9. Range Input (Character Limit Slider)
   ============================================================ */
input[type="range"] {
  width: 100%;
  height: 6px;
  appearance: none;
  -webkit-appearance: none;
  background-color: var(--color-border);
  border-radius: 3px;
  outline: none;
  cursor: pointer;
  border: none;
  padding: 0;
}

input[type="range"]::-webkit-slider-thumb {
  appearance: none;
  -webkit-appearance: none;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background-color: var(--color-blue);
  cursor: pointer;
  transition: background-color var(--transition-fast), transform var(--transition-fast);
  border: none;
}

input[type="range"]::-webkit-slider-thumb:hover {
  background-color: var(--color-blue-dark);
  transform: scale(1.1);
}

input[type="range"]::-moz-range-thumb {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background-color: var(--color-blue);
  cursor: pointer;
  border: none;
  transition: background-color var(--transition-fast);
}

input[type="range"]::-moz-range-thumb:hover {
  background-color: var(--color-blue-dark);
}

input[type="range"]::-moz-range-track {
  height: 6px;
  background-color: var(--color-border);
  border-radius: 3px;
}

input[type="range"]:focus::-webkit-slider-thumb {
  box-shadow: 0 0 0 3px rgba(46, 109, 180, 0.18);
}


/* 10. Checkboxes / Strand Selectors
   ============================================================ */
.strand-item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  padding: var(--space-3);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: border-color var(--transition-fast), background-color var(--transition-fast);
}

.strand-item:hover {
  border-color: var(--color-blue);
  background-color: rgba(46, 109, 180, 0.03);
}

.strand-item.selected {
  border-color: var(--color-blue);
  background-color: rgba(46, 109, 180, 0.05);
}

.strand-checkbox {
  display: none;
}

.strand-label {
  font-weight: var(--weight-medium);
  font-size: var(--text-sm);
  color: var(--color-ink);
  line-height: var(--leading-snug);
}

.strand-grade-row {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-top: var(--space-2);
  flex-wrap: wrap;
}

.strand-obs {
  margin-top: var(--space-2);
}

.strand-section {
  margin-bottom: var(--space-6);
}

.strand-section-title {
  font-size: var(--text-xs);
  font-weight: var(--weight-bold);
  color: var(--color-ink-muted);
  text-transform: uppercase;
  letter-spacing: var(--tracking-wide);
  margin-bottom: var(--space-3);
}


/* 11. Tabs
   ============================================================ */
.tab-list {
  display: flex;
  border-bottom: 2px solid var(--color-border);
  margin-bottom: var(--space-6);
  gap: 0;
}

.tab-btn {
  padding: 0.65rem 1.25rem;
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  margin-bottom: -2px;
  cursor: pointer;
  color: var(--color-ink-muted);
  transition: color var(--transition-fast), border-color var(--transition-fast);
  font-family: var(--font-sans);
  white-space: nowrap;
}

.tab-btn:hover {
  color: var(--color-blue);
}

.tab-btn.active {
  color: var(--color-blue);
  border-bottom-color: var(--color-blue);
}

.tab-panel {
  display: none;
}

.tab-panel.active {
  display: block;
}


/* 12. Tier Badge Pills
   ============================================================ */
.tier-badge {
  display: inline-flex;
  align-items: center;
  padding: 0.2rem 0.65rem;
  border-radius: 999px;
  font-size: var(--text-xs);
  font-weight: var(--weight-bold);
  letter-spacing: var(--tracking-wide);
}

.tier-badge-premium {
  background-color: var(--color-blue);
  color: white;
}

.tier-badge-basic {
  background-color: var(--color-teal);
  color: white;
}

.tier-badge-comp {
  background-color: var(--color-blue-dark);
  color: white;
}

.tier-badge-free {
  background-color: var(--color-border);
  color: var(--color-ink-muted);
}

.tier-badge-superadmin {
  background-color: var(--color-text);
  color: white;
}

.tier-badge-admin {
  background-color: #800020;
  color: white;
}


/* 13. Pricing Cards
   ============================================================ */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-6);
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
}

.pricing-card {
  background-color: var(--color-surface);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
  padding: var(--space-6);
  position: relative;
}

.pricing-card.featured {
  border-color: var(--color-blue);
  box-shadow: var(--shadow-md);
}

.pricing-card .price {
  font-size: var(--text-4xl);
  font-weight: var(--weight-bold);
  color: var(--color-blue);
  line-height: 1;
}

.pricing-card .price-period {
  font-size: var(--text-sm);
  color: var(--color-ink-faint);
}

.pricing-card .price-annual-note {
  font-size: var(--text-xs);
  color: var(--color-teal);
  margin-top: var(--space-1);
}

.pricing-card ul {
  list-style: none;
  padding: 0;
  margin: var(--space-4) 0;
}

.pricing-card ul li {
  padding: 0.35rem 0;
  font-size: var(--text-sm);
  display: flex;
  align-items: center;
  gap: var(--space-2);
  color: var(--color-ink);
}

.pricing-card ul li::before {
  content: "✓";
  color: var(--color-teal);
  font-weight: var(--weight-bold);
  flex-shrink: 0;
}

/* Billing toggle */
.billing-toggle {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  justify-content: center;
  margin-bottom: var(--space-8);
}

.toggle-label {
  font-size: var(--text-sm);
  color: var(--color-ink-muted);
  cursor: pointer;
  transition: color var(--transition-fast);
}

.toggle-label.active {
  color: var(--color-blue);
  font-weight: var(--weight-medium);
}

.toggle-switch {
  position: relative;
  width: 44px;
  height: 24px;
  display: inline-block;
  cursor: pointer;
  flex-shrink: 0;
}

.toggle-switch input {
  opacity: 0;
  width: 0;
  height: 0;
  position: absolute;
}

.toggle-slider {
  position: absolute;
  inset: 0;
  background-color: var(--color-border);
  border-radius: 999px;
  transition: background-color var(--transition-fast);
}

.toggle-slider::before {
  position: absolute;
  content: "";
  width: 18px;
  height: 18px;
  bottom: 3px;
  left: 3px;
  background-color: white;
  border-radius: 50%;
  transition: transform var(--transition-base);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.15);
}

.toggle-switch input:checked + .toggle-slider {
  background-color: var(--color-blue);
}

.toggle-switch input:checked + .toggle-slider::before {
  transform: translateX(20px);
}


/* 14. Alert / Notification Banner
   ============================================================ */
.alert {
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-sm);
  font-size: var(--text-sm);
  margin-bottom: var(--space-4);
  border: 1px solid;
  line-height: var(--leading-normal);
}

.alert-error {
  background-color: #fef0ee;
  border-color: #f5c6c0;
  color: #a93226;
}

.alert-success {
  background-color: #eafaf1;
  border-color: #a9dfbf;
  color: #1e8449;
}

.alert-info {
  background-color: var(--color-teal-faint);
  border-color: var(--color-teal-light);
  color: #1a6a9a;
}

.alert-warning {
  background-color: #fef9ec;
  border-color: #f9d87e;
  color: #7d5a00;
}


/* 15. Result Output Area (Report Assistant)
   ============================================================ */
.result-area {
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.25rem;
  background-color: var(--color-surface);
  min-height: 120px;
  font-size: var(--text-base);
  line-height: var(--leading-loose);
  color: var(--color-ink);
}

.result-area.loading {
  color: var(--color-ink-faint);
  font-style: italic;
}

.result-actions {
  display: flex;
  gap: var(--space-2);
  flex-wrap: wrap;
  margin-top: var(--space-3);
}

.result-card {
  margin-bottom: var(--space-6);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.result-card-header {
  background-color: var(--color-bg);
  padding: 0.65rem var(--space-4);
  border-bottom: 1px solid var(--color-border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  color: var(--color-ink);
}

.result-card-body {
  padding: 1.25rem;
  font-size: var(--text-base);
  line-height: var(--leading-loose);
  white-space: pre-wrap;
  color: var(--color-ink);
}


/* 16. Refine Section
   ============================================================ */
.refine-section {
  margin-top: var(--space-3);
  padding-top: var(--space-3);
  border-top: 1px solid var(--color-border);
}

.refine-buttons {
  display: flex;
  gap: var(--space-2);
  flex-wrap: wrap;
  margin-bottom: var(--space-2);
}

.custom-refine-row {
  display: flex;
  gap: var(--space-2);
  align-items: flex-start;
}


/* 17. Loading Spinner
   ============================================================ */
.spinner {
  display: inline-block;
  width: 18px;
  height: 18px;
  border: 2px solid var(--color-border);
  border-top-color: var(--color-blue);
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
  flex-shrink: 0;
}

.generating-placeholder {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 1.25rem 1.5rem;
  color: var(--color-text-muted);
  font-size: var(--text-sm);
}

.spinner-lg {
  width: 32px;
  height: 32px;
  border-width: 3px;
}

@keyframes spin {
  0%   { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}


/* 18. Page: Login
   ============================================================ */
.login-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--color-bg) 55%, var(--color-teal-faint) 100%);
  padding: var(--space-8) var(--space-4);
}

.login-card {
  background-color: var(--color-surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  padding: 2.5rem;
  width: 100%;
  max-width: 420px;
}

.login-logo {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-3);
  margin-bottom: var(--space-8);
}

.login-logo__img {
  height: 52px;
  width: auto;
  display: block;
}

.login-logo .wordmark {
  font-size: var(--text-2xl);
  font-weight: var(--weight-bold);
  color: var(--color-blue);
  display: block;
}

.login-logo .subtitle {
  font-size: var(--text-sm);
  color: var(--color-ink-faint);
  margin-top: var(--space-1);
  display: block;
}

.auth-toggle {
  text-align: center;
  margin-top: var(--space-6);
  font-size: var(--text-sm);
  color: var(--color-ink-muted);
}

.auth-toggle a {
  color: var(--color-blue);
  font-weight: var(--weight-medium);
}


/* 19. Dashboard
   ============================================================ */
.dashboard-main {
  max-width: 1100px;
  margin-left: auto;
  margin-right: auto;
  padding: var(--space-8) var(--space-6);
}

.dashboard-main--wide {
  max-width: 1400px;
}

.welcome-section {
  margin-bottom: var(--space-8);
}

.welcome-title {
  font-size: var(--text-2xl);
  font-weight: var(--weight-bold);
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: 0;
}

.section-heading {
  font-size: var(--text-xs);
  font-weight: var(--weight-bold);
  text-transform: uppercase;
  letter-spacing: var(--tracking-wide);
  color: var(--color-ink-faint);
  margin-bottom: var(--space-4);
}

.tool-card-description {
  font-size: var(--text-sm);
  color: var(--color-ink-muted);
  margin: var(--space-2) 0 var(--space-4) 0;
  line-height: var(--leading-normal);
}

.subscription-info {
  font-size: var(--text-sm);
  color: var(--color-ink-muted);
  margin-bottom: var(--space-3);
}

.renewal-date {
  font-size: var(--text-xs);
  color: var(--color-ink-faint);
}


/* 20. Report Assistant Page
   ============================================================ */
.ra-page {
  max-width: 900px;
  margin-left: auto;
  margin-right: auto;
  padding: var(--space-8) var(--space-6);
}

.ra-form-col {
  flex: 1 1 420px;
  min-width: 0;
}

.ra-results-col {
  flex: 1 1 400px;
  min-width: 0;
}

.ra-layout {
  display: flex;
  gap: var(--space-8);
  align-items: flex-start;
}

.student-info-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-4);
  margin-bottom: var(--space-6);
}


/* 21. Responsive Utilities
   ============================================================ */

/* Below 900px */
@media (max-width: 900px) {
  .grid-3 {
    grid-template-columns: repeat(2, 1fr);
  }

  .student-info-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .ra-layout {
    flex-direction: column;
  }

  .ra-form-col,
  .ra-results-col {
    flex-basis: auto;
    width: 100%;
  }
}

/* Below 640px */
@media (max-width: 640px) {
  .grid-2 {
    grid-template-columns: 1fr;
  }

  .grid-3 {
    grid-template-columns: 1fr;
  }

  .pricing-grid {
    grid-template-columns: 1fr;
  }

  .student-info-grid {
    grid-template-columns: 1fr;
  }

  .ra-page {
    padding: 1.25rem var(--space-4);
  }

  .login-card {
    padding: 1.75rem 1.25rem;
  }

  .dashboard-main {
    padding: 1.25rem var(--space-4);
  }

  h1 { font-size: 1.4rem; }
  h2 { font-size: 1.2rem; }

  .welcome-title {
    font-size: var(--text-xl);
  }

  .tab-btn {
    padding: 0.6rem 0.9rem;
    font-size: var(--text-xs);
  }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}


/* 22. Utility Classes
   ============================================================ */
.hidden {
  display: none !important;
}

.text-center {
  text-align: center;
}

.text-right {
  text-align: right;
}

.text-muted {
  color: var(--color-ink-faint);
}

.text-secondary {
  color: var(--color-ink-muted);
}

.text-brand {
  color: var(--color-blue);
}

.text-teal {
  color: var(--color-teal);
}

.text-sm {
  font-size: var(--text-sm);
}

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

.font-semibold {
  font-weight: 600;
}

.font-medium {
  font-weight: var(--weight-medium);
}

.mt-1 { margin-top: var(--space-2); }
.mt-2 { margin-top: var(--space-4); }
.mt-3 { margin-top: var(--space-6); }
.mt-4 { margin-top: var(--space-8); }

.mb-1 { margin-bottom: var(--space-2); }
.mb-2 { margin-bottom: var(--space-4); }
.mb-3 { margin-bottom: var(--space-6); }
.mb-4 { margin-bottom: var(--space-8); }

.pt-1 { padding-top: var(--space-2); }
.pt-2 { padding-top: var(--space-4); }
.pb-1 { padding-bottom: var(--space-2); }
.pb-2 { padding-bottom: var(--space-4); }

.w-full { width: 100%; }
.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.justify-center { justify-content: center; }
.gap-1 { gap: var(--space-2); }
.gap-2 { gap: var(--space-4); }
.flex-wrap { flex-wrap: wrap; }
.flex-1 { flex: 1; }

.divider {
  border: none;
  border-top: 1px solid var(--color-border);
  margin: var(--space-6) 0;
}

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


/* 23. Admin dashboard
   ============================================================ */

/* 4-column grid for stats */
.grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-4);
}

@media (max-width: 900px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 480px) {
  .grid-4 { grid-template-columns: 1fr; }
}

/* Stat card numbers */
.stat-number {
  font-size: var(--text-3xl);
  font-weight: var(--weight-bold);
  color: var(--color-ink);
  line-height: 1;
  margin-bottom: var(--space-1);
}

.stat-label {
  font-size: var(--text-sm);
  color: var(--color-ink-muted);
}

/* Inline stats row above table */
.admin-stats-row {
  display: flex;
  gap: var(--space-4);
  flex-wrap: wrap;
  align-items: center;
}

.admin-stat-pill {
  font-size: var(--text-sm);
  color: var(--color-ink-muted);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: var(--space-1) var(--space-3);
}

/* Search + filter toolbar */
.admin-toolbar {
  display: flex;
  gap: var(--space-3);
  align-items: center;
  flex-wrap: wrap;
}

.admin-search {
  flex: 1;
  min-width: 220px;
  max-width: 360px;
}

.filter-pills {
  display: flex;
  gap: var(--space-2);
  flex-wrap: wrap;
}

.filter-pill {
  padding: 0.3rem 0.75rem;
  border-radius: 999px;
  font-size: var(--text-xs);
  font-weight: var(--weight-medium);
  cursor: pointer;
  border: 1.5px solid var(--color-border);
  background: var(--color-surface);
  color: var(--color-ink-muted);
  transition: background-color var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast);
}

.filter-pill:hover {
  border-color: var(--color-blue);
  color: var(--color-blue);
}

.filter-pill.active {
  background: var(--color-blue);
  border-color: var(--color-blue);
  color: white;
}

/* Admin table */
.admin-table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--text-sm);
}

.admin-table th {
  text-align: left;
  font-weight: var(--weight-medium);
  padding: var(--space-3) var(--space-3);
  border-bottom: 2px solid var(--color-border);
  color: var(--color-ink-muted);
  white-space: nowrap;
  user-select: none;
}

.admin-table th[data-col] {
  cursor: pointer;
}

.admin-table th[data-col]:hover {
  color: var(--color-blue);
}

.admin-table th.sort-asc::after  { content: ' ▲'; color: var(--color-blue); }
.admin-table th.sort-desc::after { content: ' ▼'; color: var(--color-blue); }

.admin-table td {
  padding: var(--space-3) var(--space-3);
  border-bottom: 1px solid var(--color-border);
  vertical-align: middle;
}

.admin-table tr:last-child td {
  border-bottom: none;
}

.admin-table tbody tr:nth-child(even) td {
  background: var(--color-bg);
}

.admin-table tbody tr:hover td {
  background: var(--color-teal-faint);
}

/* Actions menu */
.actions-cell {
  position: relative;
}

.actions-btn {
  padding: 0.25rem 0.5rem;
  font-size: 1rem;
  line-height: 1;
  letter-spacing: 0.05em;
}

/* Floating dropdown — positioned via JS with position:fixed */
.actions-menu {
  position: fixed;
  z-index: 300;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
  min-width: 200px;
  padding: var(--space-2) 0;
  display: none;
}

.actions-menu.open {
  display: block;
}

.actions-menu-section {
  padding: var(--space-2) var(--space-4);
  font-size: var(--text-xs);
  font-weight: var(--weight-bold);
  color: var(--color-ink-faint);
  text-transform: uppercase;
  letter-spacing: var(--tracking-wide);
}

.actions-menu-divider {
  height: 1px;
  background: var(--color-border);
  margin: var(--space-2) 0;
}

.actions-menu button {
  display: block;
  width: 100%;
  text-align: left;
  background: none;
  border: none;
  padding: var(--space-2) var(--space-4);
  font-size: var(--text-sm);
  color: var(--color-ink);
  cursor: pointer;
  font-family: var(--font-sans);
  transition: background-color var(--transition-fast);
}

.actions-menu button:hover {
  background: var(--color-bg);
}

.actions-menu button.danger {
  color: var(--color-error);
}

/* Modal overlay */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(26, 26, 46, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 400;
  padding: var(--space-4);
}

.modal-card {
  width: 100%;
  max-width: 420px;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
}

.header-nav__logout {
  font-size: var(--text-sm);
  font-weight: var(--weight-bold);
  color: white;
  background-color: var(--color-blue);
  padding: 0.25rem 0.75rem;
  border-radius: var(--radius-md);
  text-decoration: none;
}
.header-nav__logout:hover {
  background-color: var(--color-blue-dark);
  color: white;
  text-decoration: none;
}

.header-nav__admin {
  font-size: var(--text-sm);
  font-weight: var(--weight-bold);
  color: white;
  background-color: #800020;
  padding: 0.25rem 0.75rem;
  border-radius: var(--radius-md);
  text-decoration: none;
}
.header-nav__admin:hover {
  background-color: #600018;
  color: white;
  text-decoration: none;
}