/* ==========================================================================
   Tutor Brokerage Design System
   Palette strictly from brief:
   - Primary Red:      #D92B04
   - Deep Crimson:     #BF2C2C
   - Warm Amber:       #F29C50
   - Soft Coral:       #F28E85
   - Pale Blush:       #F2CCC9
   Light backgrounds and neutral text; verify contrast on rendered components.
   No gradients, no purple, no dark mode, no emoji.
   ========================================================================== */

.feedback-table { min-width: 900px; }
.feedback-table td { min-width: 110px; }
.feedback-table td:nth-child(4), .feedback-table td:nth-child(5) { min-width: 220px; overflow-wrap: anywhere; }
.moderation-dialog {
  width: min(600px, calc(100% - 2rem));
  max-height: calc(100dvh - 2rem);
  margin: auto;
  padding: 1.5rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow-y: auto;
}
.moderation-dialog::backdrop { background: rgb(0 0 0 / 45%); }

.profile-review-layout {
  display: grid;
  grid-template-columns: minmax(0, 2fr) minmax(0, 1fr);
  gap: 1.5rem;
}
.profile-review-layout > div { min-width: 0; }
.profile-review-layout .card { margin-bottom: 1.5rem; }
.profile-review-layout .card-header { margin-bottom: 1rem; font-weight: 600; }
.profile-review-heading { font-size: 1rem; margin: 1.5rem 0 0.5rem; }
@media (max-width: 767px) {
  .profile-review-layout { grid-template-columns: minmax(0, 1fr); }
}

:root {
  --color-primary: #D92B04;
  --color-primary-dark: #BF2C2C;
  --color-secondary: #F29C50;
  --color-accent-coral: #F28E85;
  --color-accent-blush: #F2CCC9;

  /* Neutrals & Backgrounds (Light mode only) */
  --color-bg-body: #FFFFFF;
  --color-bg-subtle: #FFFDFD;
  --color-bg-card: #FFFFFF;
  --color-bg-muted: #F8F6F6;
  --color-bg-accent: #FDF4F3;
  --color-bg-problem: #FFF8F7;
  --color-bg-solution: #FFFFFF;

  /* Typography Colors (Ensuring >= 4.5:1 on white/light) */
  --color-text-main: #1C1917;    /* Contrast ~16.5:1 against white */
  --color-text-body: #292524;    /* Contrast ~13.5:1 against white */
  --color-text-muted: #57534E;   /* Contrast ~5.8:1 against white */
  --color-text-inverse: #FFFFFF;

  /* Status Colors (WCAG AA compliant) */
  --color-success: #1B7A3D;
  --color-success-bg: #E8F5E9;
  --color-warning-text: #613B00;
  --color-warning-bg: #FFF3CD;
  --color-error: #BF2C2C;
  --color-error-bg: #FDEDEC;

  /* Borders & Dividers */
  --color-border: #E8DFDD;
  --color-border-dark: #8A8280; /* 3.76:1 on white; form controls need >= 3:1 */
  --color-border-focus: #BF2C2C;

  /* Typography Scale */
  --font-sans: system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Consolas, "Liberation Mono", Menlo, monospace;

  /* Elevation (Soft clean shadows, no colored glow) */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.07), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -4px rgba(0, 0, 0, 0.05);

  /* 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;
  --space-16: 4rem;

  /* Radii */
  --radius-sm: 4px;
  --radius-md: 6px;
  --radius-lg: 8px;
  --radius-full: 9999px;

  /* Focus ring */
  --focus-ring: 0 0 0 3px rgba(217, 43, 4, 0.35);
}

/* Base Reset & Box Sizing */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-family: var(--font-sans);
  /* Larger base type for older readers; still scales with the browser setting. */
  font-size: 107%;
  line-height: 1.65;
  color: var(--color-text-body);
  background-color: var(--color-bg-body);
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background-color: var(--color-bg-body);
  color: var(--color-text-body);
}

/* Accessibility: Skip link */
.skip-link {
  position: absolute;
  top: -100px;
  left: var(--space-4);
  background: var(--color-primary-dark);
  color: var(--color-text-inverse);
  padding: var(--space-2) var(--space-4);
  z-index: 9999;
  text-decoration: none;
  font-weight: 600;
  border-radius: var(--radius-sm);
  transition: top 0.15s ease-in-out;
}
.skip-link:focus {
  top: var(--space-4);
  outline: 3px solid var(--color-secondary);
}

/* Focus styles for keyboard accessibility */
:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
  border-color: var(--color-border-focus);
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  color: var(--color-text-main);
  font-weight: 700;
  line-height: 1.25;
  margin-bottom: var(--space-3);
}

h1 { font-size: 1.875rem; }
h2 { font-size: 1.5rem; }
h3 { font-size: 1.25rem; }
h4 { font-size: 1.125rem; }

@media (min-width: 768px) {
  h1 { font-size: 2.375rem; }
  h2 { font-size: 1.75rem; }
  h3 { font-size: 1.375rem; }
}

p {
  margin-bottom: var(--space-4);
  max-width: 75ch;
}

a {
  color: var(--color-primary);
  text-decoration: underline;
  text-underline-offset: 3px;
  font-weight: 500;
}
a:hover {
  color: var(--color-primary-dark);
}

/* Layout Containers */
.container {
  width: 100%;
  max-width: 1200px;
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--space-4);
  padding-right: var(--space-4);
}

.site-main {
  flex: 1 0 auto;
}

/* Header & Navigation */
.site-header {
  background-color: var(--color-bg-body);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 100;
}

.nav-wrapper {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 4.25rem;
  padding-top: var(--space-2);
  padding-bottom: var(--space-2);
  gap: var(--space-4);
  flex-wrap: wrap;
}

.brand-link {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  text-decoration: none;
  color: var(--color-primary-dark);
  font-weight: 700;
  font-size: 1.1875rem;
}
.brand-link:hover {
  color: var(--color-primary);
}

.brand-geometry {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.brand-title {
  color: var(--color-primary-dark);
  font-weight: 700;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: var(--space-5);
  list-style: none;
  flex-wrap: wrap;
}

.nav-menu a {
  text-decoration: none;
  color: var(--color-text-main);
  font-weight: 600;
  font-size: 1rem;
  padding: var(--space-2) var(--space-1);
  position: relative;
}
.nav-menu a:hover,
.nav-menu a[aria-current="page"] {
  color: var(--color-primary);
}
.nav-menu a[aria-current="page"]::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 2px;
  background-color: var(--color-primary);
}

.navigation-menu {
  flex: 1;
  min-width: 0;
}

.navigation-menu > summary {
  cursor: pointer;
  padding: 0.75rem;
  min-height: 44px;
  text-align: right;
}

@media (min-width: 1200px) {
  .navigation-menu,
  .navigation-menu:not([open]) {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: var(--space-5);
  }

  .navigation-menu > summary {
    display: none;
  }

  .navigation-panel {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: var(--space-5);
  }

  .navigation-menu:not([open]) > .site-nav,
  .navigation-menu:not([open]) > .nav-actions {
    display: flex;
  }
}

@media (max-width: 1199px) {
  .navigation-menu[open] {
    flex-basis: 100%;
  }

  .navigation-menu .nav-menu {
    gap: var(--space-2);
    flex-direction: column;
    align-items: stretch;
  }

  .navigation-menu .nav-menu a {
    display: block;
    min-height: 44px;
  }

  .navigation-menu .nav-actions {
    padding-top: var(--space-3);
  }
}

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

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: 0.75rem 1.5rem;
  font-size: 1rem;
  font-weight: 600;
  border-radius: var(--radius-md);
  text-decoration: none;
  cursor: pointer;
  border: 1px solid transparent;
  transition: background-color 0.15s ease, border-color 0.15s ease, color 0.15s ease;
  line-height: 1.25;
  white-space: normal;
  text-align: center;
  min-height: 2.75rem;
}

.btn-primary {
  background-color: var(--color-primary);
  color: var(--color-text-inverse);
  border-color: var(--color-primary-dark);
}
.btn-primary:hover {
  background-color: var(--color-primary-dark);
  color: var(--color-text-inverse);
}

.btn-secondary {
  background-color: var(--color-bg-body);
  color: var(--color-primary-dark);
  border: 1.5px solid var(--color-primary-dark);
}
.btn-secondary:hover {
  background-color: var(--color-accent-blush);
  color: var(--color-primary-dark);
}

.btn-outline {
  background-color: transparent;
  color: var(--color-text-muted);
  border: 1px solid var(--color-border);
}
.btn-outline:hover {
  background-color: var(--color-bg-muted);
  color: var(--color-text-main);
  border-color: var(--color-border-dark);
}

.btn-sm {
  padding: 0.375rem 0.75rem;
  font-size: 0.8125rem;
  min-height: 2.125rem;
}

.btn-block {
  width: 100%;
}

/* Hero Section */
.hero {
  background-color: var(--color-bg-accent);
  border-bottom: 1px solid var(--color-border);
  padding: var(--space-10) 0;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-8);
  align-items: center;
}

@media (min-width: 960px) {
  .hero-grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
  }
}

.hero-tagline {
  display: inline-block;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-primary-dark);
  margin-bottom: var(--space-3);
  background-color: var(--color-accent-blush);
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
}

.hero-lead {
  font-size: 1.0625rem;
  color: var(--color-text-muted);
  line-height: 1.6;
  margin-bottom: var(--space-6);
}

.hero-actions {
  display: flex;
  gap: var(--space-3);
  flex-wrap: wrap;
  margin-bottom: var(--space-6);
}

/* Structured Hero Preview Visual Board (Neutral Placeholder Card) */
.hero-preview-board {
  background-color: var(--color-bg-card);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  box-shadow: var(--shadow-md);
}

.hero-preview-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: var(--space-3);
  margin-bottom: var(--space-4);
  border-bottom: 1px solid var(--color-border);
}

.hero-preview-title {
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--color-primary-dark);
  margin-bottom: 0;
}

.hero-preview-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  margin-bottom: var(--space-4);
}

.hero-preview-row {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  font-size: 0.875rem;
  gap: var(--space-3);
}

.hero-preview-label {
  color: var(--color-text-muted);
  font-weight: 500;
  flex-shrink: 0;
}

.hero-preview-val {
  color: var(--color-text-main);
  font-weight: 600;
  text-align: right;
}

.hero-preview-badges {
  display: flex;
  gap: var(--space-2);
  flex-wrap: wrap;
  padding-top: var(--space-3);
  border-top: 1px dashed var(--color-border);
}

.hero-caption {
  display: block;
  font-size: 0.75rem;
  color: var(--color-text-muted);
  margin-top: var(--space-3);
  text-align: center;
  font-style: italic;
}

/* Trust Strip (Section 2) */
.trust-strip {
  background-color: var(--color-bg-subtle);
  border-bottom: 1px solid var(--color-border);
  padding: var(--space-6) 0;
}

.trust-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
}

@media (min-width: 640px) {
  .trust-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 1024px) {
  .trust-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

.trust-item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  padding: var(--space-3);
  background-color: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
}

.trust-mark {
  width: 2rem;
  height: 2rem;
  flex-shrink: 0;
  background-color: var(--color-accent-blush);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-primary-dark);
}

.trust-title {
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--color-text-main);
  margin-bottom: var(--space-1);
}

.trust-desc {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  margin-bottom: 0;
  line-height: 1.4;
}

/* Sections */
.section {
  padding: var(--space-12) 0;
  border-bottom: 1px solid var(--color-border);
}

.section-header {
  margin-bottom: var(--space-8);
}
.section-header p {
  color: var(--color-text-muted);
  font-size: 1.0625rem;
}

/* Problem vs Solution Section (Section 3) */
.pair-grid {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.pair-row {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-3);
  align-items: stretch;
}

@media (min-width: 768px) {
  .pair-row {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: var(--space-4);
  }
}

.problem-card {
  background-color: var(--color-bg-problem);
  border: 1px solid var(--color-border);
  border-left: 4px solid var(--color-accent-coral);
  border-radius: var(--radius-md);
  padding: var(--space-4) var(--space-5);
}

.problem-card h3 {
  font-size: 1rem;
  color: var(--color-primary-dark);
  margin-bottom: var(--space-2);
}

.problem-card p {
  font-size: 0.9375rem;
  color: var(--color-text-body);
  margin-bottom: 0;
}

.solution-card {
  background-color: var(--color-bg-solution);
  border: 1px solid var(--color-border);
  border-left: 4px solid var(--color-primary);
  border-radius: var(--radius-md);
  padding: var(--space-4) var(--space-5);
}

.solution-card h3 {
  font-size: 1rem;
  color: var(--color-text-main);
  margin-bottom: var(--space-2);
}

.solution-card p {
  font-size: 0.9375rem;
  color: var(--color-text-body);
  margin-bottom: 0;
}

/* Process 4 Steps (Section 4) */
.process-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
}

@media (min-width: 640px) {
  .process-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 1024px) {
  .process-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

.step-card {
  background-color: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-5);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  position: relative;
}

.step-number {
  width: 2rem;
  height: 2rem;
  background-color: var(--color-primary);
  color: var(--color-text-inverse);
  font-weight: 700;
  font-size: 0.875rem;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-primary-dark);
}

.step-title {
  font-size: 1.0625rem;
  margin-bottom: var(--space-1);
}

.step-desc {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  margin-bottom: 0;
}

/* Programs Grid (Section 5) */
.program-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
}

@media (min-width: 640px) {
  .program-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 1024px) {
  .program-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.program-card {
  background-color: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-top: 3px solid var(--color-secondary);
  border-radius: var(--radius-md);
  padding: var(--space-6);
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-sm);
}

.program-card-primary {
  border-top-color: var(--color-primary);
}

.program-card-crimson {
  border-top-color: var(--color-primary-dark);
}

.program-title {
  font-size: 1.1875rem;
  margin-bottom: var(--space-2);
}

.program-desc {
  font-size: 0.9375rem;
  color: var(--color-text-muted);
  margin-bottom: var(--space-4);
  flex-grow: 1;
}

.program-tags {
  display: flex;
  gap: var(--space-2);
  flex-wrap: wrap;
  margin-bottom: var(--space-5);
}

/* Featured Tutors (Section 6) */
.tutor-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
}

@media (min-width: 640px) {
  .tutor-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 1024px) {
  .tutor-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.tutor-card {
  background-color: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-5);
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-sm);
}

.tutor-card-header {
  display: flex;
  gap: var(--space-3);
  align-items: center;
  margin-bottom: var(--space-3);
}

.tutor-avatar {
  width: 3.5rem;
  height: 3.5rem;
  border-radius: var(--radius-md);
  object-fit: cover;
  border: 1px solid var(--color-border);
  flex-shrink: 0;
}

.tutor-avatar-placeholder {
  width: 3.5rem;
  height: 3.5rem;
  background-color: var(--color-accent-blush);
  color: var(--color-primary-dark);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  font-weight: 700;
  flex-shrink: 0;
}

.tutor-name {
  font-size: 1.0625rem;
  font-weight: 700;
  line-height: 1.35;
  margin-bottom: var(--space-1);
  word-break: break-word;
  overflow-wrap: anywhere;
}

.tutor-bio {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  line-height: 1.5;
  margin-bottom: var(--space-3);
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.tutor-meta-line {
  font-size: 0.8125rem;
  color: var(--color-text-body);
  margin-bottom: var(--space-2);
}

.tutor-meta-line strong {
  color: var(--color-text-main);
}

.tutor-card-actions {
  margin-top: auto;
  padding-top: var(--space-4);
  border-top: 1px solid var(--color-border);
  display: flex;
  gap: var(--space-2);
}

/* Operational Commitments (Section 7) */
.commitments-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
}

@media (min-width: 640px) {
  .commitments-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 1024px) {
  .commitments-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

.commitment-card {
  background-color: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-5);
  box-shadow: var(--shadow-sm);
}

.commitment-card h3 {
  font-size: 1rem;
  color: var(--color-primary-dark);
  margin-bottom: var(--space-2);
}

.commitment-card p {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  margin-bottom: 0;
  line-height: 1.5;
}

/* FAQ Accordion (Section 9) */
.faq-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  max-width: 840px;
  margin-left: auto;
  margin-right: auto;
}

.faq-item {
  background-color: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-4) var(--space-5);
}

.faq-summary {
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-text-main);
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
}

.faq-summary::-webkit-details-marker {
  display: none;
}

.faq-summary::after {
  content: "+";
  font-size: 1.25rem;
  color: var(--color-primary-dark);
  font-weight: 700;
  flex-shrink: 0;
}

.faq-item[open] .faq-summary::after {
  content: "−";
}

.faq-content {
  padding-top: var(--space-3);
  margin-top: var(--space-3);
  border-top: 1px solid var(--color-border);
  font-size: 0.9375rem;
  color: var(--color-text-body);
  line-height: 1.6;
}

.faq-content p:last-child {
  margin-bottom: 0;
}

/* Forms */
.form-card {
  background-color: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-6);
  box-shadow: var(--shadow-md);
}

.form-group {
  margin-bottom: var(--space-4);
}

.form-label {
  display: block;
  font-weight: 600;
  font-size: 0.875rem;
  color: var(--color-text-main);
  margin-bottom: var(--space-1);
}

.form-label .required {
  color: var(--color-primary-dark);
  margin-left: 2px;
}

.form-hint {
  display: block;
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  margin-top: var(--space-1);
}

.form-control {
  width: 100%;
  padding: 0.75rem 0.875rem;
  font-size: 1rem;
  font-family: inherit;
  line-height: 1.5;
  color: var(--color-text-main);
  background-color: var(--color-bg-body);
  border: 1px solid var(--color-border-dark);
  border-radius: var(--radius-sm);
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
  min-height: 2.75rem;
}

.form-control:focus {
  outline: none;
  border-color: var(--color-border-focus);
  box-shadow: var(--focus-ring);
}

textarea.form-control {
  min-height: 5.5rem;
  resize: vertical;
}

.form-error {
  display: block;
  font-size: 0.8125rem;
  color: var(--color-error);
  font-weight: 600;
  margin-top: var(--space-1);
}

/* Alerts */
.alert {
  padding: var(--space-4);
  border-radius: var(--radius-sm);
  margin-bottom: var(--space-4);
  border: 1px solid transparent;
  font-size: 0.9375rem;
  display: flex;
  gap: var(--space-3);
  align-items: flex-start;
}

.alert-success {
  background-color: var(--color-success-bg);
  color: #0E4E25;
  border-color: #B7E1CD;
}

.alert-error {
  background-color: var(--color-error-bg);
  color: var(--color-error);
  border-color: var(--color-accent-blush);
}

.alert-warning {
  background-color: var(--color-warning-bg);
  color: var(--color-warning-text);
  border-color: #FFEBAA;
}

.alert-info {
  background-color: var(--color-bg-accent);
  color: var(--color-text-main);
  border-color: var(--color-border);
}

/* Badges */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 0.25rem 0.5rem;
  font-size: 0.75rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  line-height: 1;
}

.badge-primary {
  background-color: var(--color-accent-blush);
  color: var(--color-primary-dark);
  border: 1px solid var(--color-border);
}

.badge-success {
  background-color: var(--color-success-bg);
  color: var(--color-success);
  border: 1px solid #B7E1CD;
}

.badge-warning {
  background-color: var(--color-warning-bg);
  color: var(--color-warning-text);
  border: 1px solid #FFEBAA;
}

.badge-neutral {
  background-color: var(--color-bg-muted);
  color: var(--color-text-muted);
  border: 1px solid var(--color-border);
}

.tag {
  display: inline-flex;
  align-items: center;
  background-color: var(--color-bg-muted);
  color: var(--color-text-body);
  border: 1px solid var(--color-border);
  padding: 0.2rem 0.5rem;
  font-size: 0.8125rem;
  border-radius: var(--radius-sm);
  font-weight: 500;
}

/* Tutor Detail Layout */
.tutor-detail-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-8);
  align-items: start;
}

@media (min-width: 960px) {
  .tutor-detail-layout {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, 0.85fr);
  }
}

/* Data Tables & Admin Workspace */
.table-responsive {
  width: 100%;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  margin-bottom: var(--space-4);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background-color: var(--color-bg-card);
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.875rem;
}

.data-table th {
  background-color: var(--color-bg-muted);
  color: var(--color-text-main);
  font-weight: 700;
  padding: var(--space-3) var(--space-4);
  border-bottom: 2px solid var(--color-border);
  white-space: nowrap;
}

.data-table td {
  padding: var(--space-3) var(--space-4);
  border-bottom: 1px solid var(--color-border);
  color: var(--color-text-body);
  vertical-align: middle;
}

.data-table tr:hover {
  background-color: var(--color-bg-subtle);
}

.tutor-filters {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr)) auto;
  gap: var(--space-3);
  align-items: end;
  width: 100%;
}

.tutor-filters > div {
  min-width: 0 !important;
}

@media (max-width: 767px) {
  .tutor-filters {
    grid-template-columns: 1fr;
  }
}

.filter-toolbar {
  background-color: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-4);
  margin-bottom: var(--space-4);
  display: flex;
  gap: var(--space-3);
  flex-wrap: wrap;
  align-items: center;
}

.filter-chips {
  display: flex;
  gap: var(--space-2);
  flex-wrap: wrap;
  align-items: center;
  margin-bottom: var(--space-6);
}

.filter-chip {
  display: inline-flex;
  align-items: center;
  padding: 0.3125rem 0.75rem;
  background-color: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--color-text-body);
  text-decoration: none;
  transition: all 0.15s ease;
}

.filter-chip:hover {
  border-color: var(--color-primary);
  color: var(--color-primary-dark);
  background-color: var(--color-bg-subtle);
}

.filter-chip.active {
  background-color: var(--color-primary);
  border-color: var(--color-primary);
  color: #FFFFFF;
}

.form-row-2col {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
}

@media (min-width: 640px) {
  .form-row-2col {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

.tutor-detail-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
  align-items: start;
}

@media (min-width: 960px) {
  .tutor-detail-layout {
    grid-template-columns: minmax(0, 1fr) 380px;
    gap: var(--space-8);
  }
}

/* Floating Zalo Button (Compact Recognizable Icon, Safe Area Protected, >=44px) */
.zalo-floating-btn {
  position: fixed;
  bottom: calc(var(--space-6) + env(safe-area-inset-bottom, 0px));
  right: calc(var(--space-6) + env(safe-area-inset-right, 0px));
  z-index: 900;
  background-color: #0068FF;
  color: #FFFFFF;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 3.25rem;
  height: 3.25rem;
  min-width: 44px;
  min-height: 44px;
  border-radius: var(--radius-full);
  box-shadow: 0 4px 14px rgba(0, 104, 255, 0.45);
  border: 2px solid #FFFFFF;
  transition: transform 0.15s ease, background-color 0.15s ease, box-shadow 0.15s ease;
}

.zalo-floating-btn:hover {
  background-color: #0054CC;
  color: #FFFFFF;
  transform: scale(1.08);
  box-shadow: 0 6px 20px rgba(0, 104, 255, 0.55);
}

.zalo-floating-btn:focus-visible {
  outline: 3px solid var(--color-primary-dark);
  outline-offset: 3px;
  box-shadow: 0 0 0 4px rgba(0, 104, 255, 0.3);
}

/* Footer */
.site-footer {
  background-color: var(--color-bg-muted);
  border-top: 1px solid var(--color-border);
  padding: var(--space-12) 0 var(--space-6) 0;
  margin-top: auto;
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-8);
  margin-bottom: var(--space-8);
}

@media (min-width: 640px) {
  .footer-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 1024px) {
  .footer-grid {
    grid-template-columns: minmax(0, 1.4fr) repeat(3, minmax(0, 1fr));
  }
}

.footer-col h3 {
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--color-text-main);
  margin-bottom: var(--space-3);
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.footer-links a {
  color: var(--color-text-muted);
  text-decoration: none;
}
.footer-links a:hover {
  color: var(--color-primary);
  text-decoration: underline;
}

.footer-bottom {
  padding-top: var(--space-6);
  border-top: 1px solid var(--color-border);
  text-align: center;
  font-size: 0.8125rem;
}

/* HTMX Loading States */
.htmx-indicator {
  display: none;
}
.htmx-request .htmx-indicator,
.htmx-request.htmx-indicator {
  display: inline-block;
}

/* Mobile Responsive Refinements (<= 640px) */
@media (max-width: 640px) {
  .site-main {
    padding-bottom: calc(5rem + env(safe-area-inset-bottom, 0px));
  }

  .illustration-slot {
    aspect-ratio: 13 / 10 !important;
  }

  .zalo-floating-btn {
    bottom: calc(1rem + env(safe-area-inset-bottom, 0px));
    right: calc(1rem + env(safe-area-inset-right, 0px));
    width: 2.75rem;
    height: 2.75rem;
    min-width: 44px;
    min-height: 44px;
    box-shadow: 0 4px 12px rgba(0, 104, 255, 0.4);
  }

  .hero-visual-col {
    margin-top: var(--space-2);
    margin-bottom: var(--space-4);
  }

  .tutor-grid {
    padding-bottom: var(--space-4);
  }
}