/* ============================================
   VIDYA-X AI — Global Styles (Step 1)
   ============================================ */

:root {
  color-scheme: light;
  --brand: #4f46e5;
  --brand-strong: #4338ca;
  --brand-soft: #eef2ff;
  --ink: #17233b;
  --muted: #64748b;
  --page: #f4f7fb;
  --surface: #ffffff;
  --line: #dce4ef;
  --success: #15803d;
  --warning: #a16207;
  --danger: #b42318;
  --radius-card: 16px;
  --radius-control: 10px;
  --shadow-card: 0 12px 32px rgba(24, 39, 75, 0.07);
  --focus-ring: 0 0 0 3px rgba(79, 70, 229, 0.22);
  --motion-fast: 180ms ease;
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: "Segoe UI", system-ui, -apple-system, sans-serif;
  color: var(--ink);
  background-color: var(--page);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* ---------- Header ---------- */
.site-header {
  text-align: center;
  padding: 1.75rem 1rem 1.25rem;
}

.logo {
  font-size: 1.75rem;
  font-weight: 800;
  letter-spacing: 0.5px;
  color: #1e293b;
}

.logo-accent {
  color: #6366f1;          /* indigo accent */
}

.tagline {
  margin-top: 0.25rem;
  font-size: 0.95rem;
  color: #64748b;
}

/* ---------- Form Section ---------- */
.form-section {
  flex: 1;
  display: flex;
  justify-content: center;
  align-items: flex-start;
  padding: 1.5rem 1rem 3rem;
}

.form-card {
  width: 100%;
  max-width: 520px;
  background: #ffffff;
  border: 1px solid var(--line);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-card);
  padding: 2.5rem 2rem;
}

.form-title {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 0.25rem;
}

.form-subtitle {
  font-size: 0.9rem;
  color: #64748b;
  margin-bottom: 1.75rem;
}

/* ---------- Form Elements ---------- */
.form-group {
  margin-bottom: 1.25rem;
}

.form-group label {
  display: block;
  font-weight: 600;
  font-size: 0.875rem;
  margin-bottom: 0.35rem;
  color: #334155;
}

.required {
  color: #ef4444;
}

.optional-tag {
  font-weight: 400;
  color: #94a3b8;
  font-size: 0.8rem;
}

.form-group input,
.form-group select {
  width: 100%;
  padding: 0.65rem 0.85rem;
  font-size: 0.95rem;
  min-height: 44px;
  border: 1px solid #cbd5e1;
  border-radius: var(--radius-control);
  background: #fbfcfe;
  color: var(--ink);
  transition: border-color var(--motion-fast), box-shadow var(--motion-fast), background var(--motion-fast);
}

.form-group input:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--brand);
  background: #fff;
  box-shadow: var(--focus-ring);
}

/* Field‑level error state */
.form-group input.input-error,
.form-group select.input-error {
  border-color: #ef4444;
}

.error-msg {
  display: block;
  min-height: 1.1rem;          /* reserve space so layout doesn't jump */
  font-size: 0.78rem;
  color: #ef4444;
  margin-top: 0.2rem;
}

/* ---------- Button ---------- */
.btn-primary {
  display: block;
  width: 100%;
  padding: 0.75rem;
  margin-top: 0.75rem;
  font-size: 1rem;
  font-weight: 700;
  color: #ffffff;
  background: var(--brand);
  border: none;
  border-radius: var(--radius-control);
  cursor: pointer;
  transition: transform var(--motion-fast), box-shadow var(--motion-fast), background var(--motion-fast);
}

.btn-primary:hover {
  background: var(--brand-strong);
  transform: translateY(-1px);
  box-shadow: 0 6px 16px rgba(79, 70, 229, 0.2);
}

.btn-primary:active {
  transform: translateY(0);
}

.btn-primary:focus-visible {
  outline: 3px solid var(--brand);
  outline-offset: 2px;
}

/* ---------- Success Message ---------- */
.success-msg {
  display: none;                /* hidden by default */
  text-align: center;
  margin-top: 1.25rem;
  padding: 0.75rem 1rem;
  font-size: 0.95rem;
  font-weight: 600;
  color: #15803d;
  background: #dcfce7;
  border-radius: 10px;
}

.success-msg.show {
  display: block;
}

/* ---------- Dashboard ---------- */
.dashboard-section {
  flex: 1;
  max-width: 840px;
  width: 100%;
  margin: 0 auto;
  padding: 1rem 1rem 3rem;
}

.dashboard-welcome {
  background: #ffffff;
  border: 1px solid var(--line);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-card);
  padding: 2rem;
  margin-bottom: 2rem;
}

.dashboard-welcome h2 {
  font-size: 1.4rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
}

.dashboard-welcome p {
  font-size: 0.95rem;
  color: #475569;
  margin-bottom: 0.3rem;
}

.section-heading {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 1rem;
}

/* Feature cards grid */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 1rem;
  margin-bottom: 2rem;
}

.feature-card {
  background: #ffffff;
  border: 1px solid var(--line);
  border-radius: var(--radius-card);
  box-shadow: 0 3px 12px rgba(24, 39, 75, 0.04);
  padding: 1.5rem 1.25rem;
  text-align: center;
  transition: transform var(--motion-fast), box-shadow var(--motion-fast), border-color var(--motion-fast);
}

.feature-card:hover {
  transform: translateY(-2px);
  border-color: #c7d2fe;
  box-shadow: 0 10px 22px rgba(24, 39, 75, 0.08);
}

.feature-card:focus-within {
  outline: 3px solid rgba(79, 70, 229, 0.2);
  outline-offset: 2px;
}

.feature-icon {
  font-size: 2rem;
  display: block;
  margin-bottom: 0.5rem;
}

.feature-card h3 {
  font-size: 0.95rem;
  font-weight: 700;
  margin-bottom: 0.35rem;
}

.feature-card p {
  font-size: 0.8rem;
  color: #64748b;
}

.card-link {
  display: inline-block;
  margin-top: 0.65rem;
  padding: 0.35rem 0.75rem;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--brand-strong);
  background-color: var(--brand-soft);
  border-radius: 6px;
  text-decoration: none;
  transition: all 0.2s ease;
}

.card-link:hover {
  background-color: var(--brand);
  color: #ffffff;
  text-decoration: none;
}

.card-link:focus-visible {
  outline: 2px solid #6366f1;
  outline-offset: 2px;
}

.coming-soon {
  text-align: center;
  font-size: 0.85rem;
  color: #94a3b8;
}

/* ---------- Footer ---------- */
.site-footer {
  text-align: center;
  padding: 1.25rem 1rem;
  font-size: 0.8rem;
  color: var(--muted);
}

/* Shared keyboard focus and navigation treatment across feature pages. */
:where(a, button, input, select, textarea, [tabindex]):focus-visible {
  outline: 3px solid rgba(79, 70, 229, 0.55);
  outline-offset: 2px;
}

.nav-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.35rem;
  margin: 1rem auto 0;
}

.nav-links a {
  padding: 0.5rem 0.75rem;
  border: 1px solid transparent;
  border-radius: 9px;
  color: #475569;
  font-size: 0.9rem;
  font-weight: 600;
  text-decoration: none;
  transition: color var(--motion-fast), background var(--motion-fast), border-color var(--motion-fast);
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--brand-strong);
  background: var(--brand-soft);
  border-color: #dbe2ff;
}

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

/* ---------- Responsive ---------- */
@media (max-width: 600px) {
  .site-header { padding-top: 1.25rem; }

  .form-card {
    padding: 1.5rem 1.1rem;
  }

  .feature-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 0.7rem;
  }

  .feature-card {
    padding: 1rem 0.75rem;
  }

  .nav-links a {
    padding: 0.45rem 0.55rem;
    font-size: 0.82rem;
  }
}

@media (max-width: 380px) {
  .feature-grid { grid-template-columns: 1fr; }
}