/* Shared visual system for every individual free-tool page. */
:root {
  --tool-primary: #dc2626;
  --tool-primary-dark: #991b1b;
  --tool-ink: #0f172a;
  --tool-muted: #64748b;
  --tool-border: #e2e8f0;
  --tool-surface: #ffffff;
  --tool-soft: #f8fafc;
}

html { scroll-behavior: smooth; }

body {
  margin: 0;
  color: var(--tool-ink);
  background: var(--tool-soft);
  font-family: Inter, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  -webkit-font-smoothing: antialiased;
}

/* Compact, consistent page introduction. */
.page-heading {
  position: relative;
  overflow: hidden;
  margin: 0 0 2rem;
  padding: 7rem 1rem 3.25rem;
  color: var(--tool-ink);
  text-align: center;
  background:
    radial-gradient(circle at 15% 10%, rgba(220, 38, 38, .12), transparent 28%),
    radial-gradient(circle at 85% 90%, rgba(37, 99, 235, .09), transparent 30%),
    #fff;
  border-bottom: 1px solid var(--tool-border);
}

.page-heading::after {
  content: '';
  position: absolute;
  left: 50%;
  bottom: 0;
  width: 90px;
  height: 4px;
  border-radius: 99px 99px 0 0;
  background: linear-gradient(90deg, var(--tool-primary), #ef4444);
  transform: translateX(-50%);
}

.page-heading h1,
.page-heading .h1 {
  margin: 0 auto .8rem !important;
  color: var(--tool-ink) !important;
  font-size: clamp(2rem, 5vw, 3.25rem) !important;
  font-weight: 800 !important;
  line-height: 1.08 !important;
  letter-spacing: -.035em;
  text-transform: none !important;
}

.page-heading p { margin: 0; color: var(--tool-muted); font-size: .95rem; }
.page-heading p a { color: var(--tool-primary) !important; font-weight: 700; text-decoration: none; }
.page-heading p span { color: var(--tool-muted); }

/* Main tool workspace. */
body > .font-sans > .container,
body > .font-sans > div > .container {
  max-width: 1180px;
}

.card {
  overflow: hidden;
  border: 1px solid var(--tool-border) !important;
  border-radius: 1.25rem !important;
  background: var(--tool-surface) !important;
  box-shadow: 0 10px 35px rgba(15, 23, 42, .07) !important;
  transition: border-color .2s ease, box-shadow .2s ease, transform .2s ease;
}

.card:hover:not(.no-hover) {
  border-color: #cbd5e1 !important;
  box-shadow: 0 18px 50px rgba(15, 23, 42, .1) !important;
  transform: translateY(-2px);
}

.card-body { padding: clamp(1.25rem, 4vw, 2.5rem) !important; }
.card-title { color: var(--tool-ink) !important; letter-spacing: -.015em; }

/* Inputs and controls use accessible, predictable sizing. */
.form-label, label { color: #334155; font-weight: 650; }

.form-control,
.form-select,
textarea,
input[type="text"],
input[type="email"],
input[type="number"],
input[type="url"],
input[type="search"],
input[type="password"],
select {
  min-height: 48px;
  border: 1px solid #cbd5e1 !important;
  border-radius: .75rem !important;
  color: var(--tool-ink);
  background-color: #fff;
  box-shadow: 0 1px 2px rgba(15, 23, 42, .03);
  transition: border-color .2s ease, box-shadow .2s ease;
}

textarea.form-control, textarea { min-height: 140px; resize: vertical; }

.form-control:focus,
.form-select:focus,
textarea:focus,
input:focus,
select:focus {
  border-color: #ef4444 !important;
  outline: 0;
  box-shadow: 0 0 0 4px rgba(220, 38, 38, .11) !important;
}

.btn {
  min-height: 46px;
  padding: .65rem 1.15rem;
  border-radius: .75rem !important;
  font-weight: 700;
  transition: transform .18s ease, box-shadow .18s ease, background-color .18s ease;
}

.btn:hover { transform: translateY(-1px); }

.btn-primary,
.btn-danger {
  border-color: var(--tool-primary) !important;
  background: linear-gradient(135deg, var(--tool-primary), var(--tool-primary-dark)) !important;
  box-shadow: 0 8px 20px rgba(220, 38, 38, .18);
}

.btn-primary:hover,
.btn-danger:hover { box-shadow: 0 12px 26px rgba(220, 38, 38, .27); }

.btn-outline-primary { color: var(--tool-primary); border-color: #fca5a5; }
.btn-outline-primary:hover { color: #fff; border-color: var(--tool-primary); background: var(--tool-primary); }

.alert { border: 0; border-radius: .9rem; }
.table-responsive { border: 1px solid var(--tool-border); border-radius: 1rem; }
.table { margin-bottom: 0; }
.table > :not(caption) > * > * { padding: .9rem 1rem; border-color: var(--tool-border); }

/* Ad columns retain their space without making the tool feel cramped. */
.col-lg-3.d-none.d-lg-block > .rounded,
.container.my-4 > .rounded {
  overflow: hidden;
  border-radius: 1rem !important;
}

/* The floating common-actions panel should stay usable on small screens. */
.fixed-bottom, .position-fixed { max-width: calc(100vw - 24px); }

@media (max-width: 991.98px) {
  .page-heading { padding-top: 6.25rem; }
  .container { padding-right: 1rem; padding-left: 1rem; }
  .row { --bs-gutter-x: 1.25rem; }
}

@media (max-width: 575.98px) {
  .page-heading { margin-bottom: 1rem; padding: 5.75rem .75rem 2.25rem; }
  .page-heading h1, .page-heading .h1 { font-size: 2rem !important; }
  .card { border-radius: 1rem !important; }
  .card-body { padding: 1.15rem !important; }
  .btn { width: 100%; }
  .btn-group .btn, .input-group .btn { width: auto; }
  .container.my-4 { margin-top: .75rem !important; margin-bottom: .75rem !important; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition-duration: .01ms !important; }
}