/* ============================================================
   base.css — Global element styles, typography, layout
   primitives, buttons, and shared utilities.
   ============================================================ */

/* ---------- Document base ---------- */
body {
  font-family: var(--tdm-font-body);
  font-weight: 400;
  font-size: 1rem;
  color: var(--tdm-charcoal);
  background-color: var(--tdm-white);
}

/* ---------- Typography ---------- */
h1,
h2,
h3,
h4 {
  font-family: var(--tdm-font-display);
  line-height: 1.15;
  letter-spacing: -0.02em;
}

h1 {
  font-weight: 900;
}

h2 {
  font-weight: 900;
  font-size: clamp(1.75rem, 3.5vw, 2.75rem);
}

h3 {
  font-weight: 700;
  font-size: clamp(1.25rem, 2vw, 1.6rem);
}

p {
  line-height: 1.65;
}

strong {
  font-weight: 700;
}

em {
  font-style: italic;
}

/* ---------- Layout primitives ---------- */
.tdm-container {
  width: 100%;
  max-width: var(--tdm-container);
  margin-inline: auto;
  padding-inline: 1.25rem;
}

.tdm-container-narrow {
  width: 100%;
  max-width: var(--tdm-container-narrow);
  margin-inline: auto;
  padding-inline: 1.25rem;
}

.tdm-section {
  padding-block: var(--tdm-space-lg);
}

@media (min-width: 768px) {
  .tdm-container,
  .tdm-container-narrow {
    padding-inline: 2rem;
  }

  .tdm-section {
    padding-block: var(--tdm-space-xl);
  }
}

/* ---------- Section theming ---------- */
.tdm-bg-navy {
  background-color: var(--tdm-navy);
  color: var(--tdm-white);
}

.tdm-bg-cream {
  background-color: var(--tdm-cream);
}

.tdm-bg-cream-warm {
  background-color: var(--tdm-cream-warm);
}

/* ---------- Eyebrow ---------- */
.tdm-eyebrow {
  display: inline-block;
  font-family: var(--tdm-font-body);
  font-weight: 700;
  font-size: 0.8rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--tdm-orange);
  margin-bottom: 1rem;
}

/* ---------- Section heading helpers ---------- */
.tdm-section-heading {
  font-size: clamp(1.75rem, 3.5vw, 2.75rem);
  margin-bottom: 1rem;
}

.tdm-section-sub {
  font-size: 1.05rem;
  line-height: 1.7;
  color: var(--tdm-gray-warm);
  max-width: 640px;
}

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

.tdm-text-center .tdm-section-sub {
  margin-inline: auto;
}

/* On navy backgrounds, soften paragraph color */
.tdm-bg-navy .tdm-section-sub {
  color: rgba(255, 255, 255, 0.75);
}

/* ---------- Orange highlight ---------- */
.tdm-hl {
  color: var(--tdm-orange);
}

/* ---------- Buttons ---------- */
.tdm-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  min-height: 44px;
  padding: 0.85rem 1.6rem;
  font-family: var(--tdm-font-body);
  font-weight: 700;
  font-size: 0.9rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  border-radius: var(--tdm-radius-sm);
  border: 2px solid transparent;
  cursor: pointer;
  transition: background-color var(--tdm-duration) var(--tdm-ease),
    color var(--tdm-duration) var(--tdm-ease),
    border-color var(--tdm-duration) var(--tdm-ease),
    transform var(--tdm-duration) var(--tdm-ease);
}

.tdm-btn:hover {
  transform: translateY(-2px);
}

.tdm-btn-primary {
  background-color: var(--tdm-orange);
  color: var(--tdm-white);
  border-color: var(--tdm-orange);
}

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

.tdm-btn-secondary {
  background-color: transparent;
  color: var(--tdm-navy);
  border-color: var(--tdm-navy);
}

.tdm-btn-secondary:hover {
  background-color: var(--tdm-navy);
  color: var(--tdm-white);
}

/* Ghost button — for dark backgrounds */
.tdm-btn-ghost {
  background-color: transparent;
  color: var(--tdm-white);
  border-color: rgba(255, 255, 255, 0.6);
}

.tdm-btn-ghost:hover {
  background-color: var(--tdm-white);
  color: var(--tdm-navy);
  border-color: var(--tdm-white);
}

.tdm-btn-full {
  width: 100%;
}

.tdm-btn-sm {
  min-height: 38px;
  padding: 0.5rem 1rem;
  font-size: 0.8rem;
}

/* ---------- Accessibility: focus states ---------- */
a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible,
select:focus-visible,
[tabindex]:focus-visible {
  outline: 2px solid var(--tdm-orange);
  outline-offset: 2px;
}

/* ---------- Skip-to-content link ---------- */
.tdm-skip-link {
  position: absolute;
  left: 0;
  top: 0;
  transform: translateY(-120%);
  background-color: var(--tdm-orange);
  color: var(--tdm-white);
  font-weight: 700;
  padding: 0.75rem 1.25rem;
  z-index: 300;
  transition: transform var(--tdm-duration) var(--tdm-ease);
}

.tdm-skip-link:focus {
  transform: translateY(0);
}

/* ---------- Visually hidden (screen-reader only) ---------- */
.tdm-sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* ---------- Reveal-on-scroll utility ---------- */
.tdm-reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s var(--tdm-ease), transform 0.6s var(--tdm-ease);
}

.tdm-reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
  .tdm-reveal {
    opacity: 1;
    transform: none;
  }
}