/* ============================================
   BASE STYLESHEET — Reset + Foundations
   ============================================ */

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  -webkit-text-size-adjust: none;
  text-size-adjust: none;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  scroll-behavior: smooth;
  hanging-punctuation: first last;
  scroll-padding-top: var(--space-16);
}

body {
  min-height: 100dvh;
  line-height: 1.65;
  font-family: var(--font-body, sans-serif);
  font-size: var(--text-base);
  color: var(--color-text);
  background-color: var(--color-bg);
  transition: background-color 0.3s ease, color 0.3s ease;
}

img, picture, video, canvas, svg {
  display: block;
  max-width: 100%;
  height: auto;
}

ul[role='list'], ol[role='list'] { list-style: none; }

input, button, textarea, select {
  font: inherit;
  color: inherit;
}

h1, h2, h3, h4, h5, h6 {
  text-wrap: balance;
  line-height: 1.1;
  font-family: var(--font-display, serif);
}

p, li, figcaption {
  text-wrap: pretty;
  max-width: 68ch;
}

a {
  color: inherit;
  text-decoration: none;
}

::selection {
  background: color-mix(in srgb, var(--color-primary) 25%, transparent);
  color: var(--color-text);
}

:focus-visible {
  outline: 1px solid var(--color-primary);
  outline-offset: 2px;
  border-radius: 0;
}

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

button {
  cursor: pointer;
  background: none;
  border: none;
}

/* ============================================
   LAYOUT UTILITIES
   ============================================ */

.container {
  width: min(var(--content-wide), 100% - var(--space-8));
  margin-inline: auto;
}

.container--narrow {
  width: min(var(--content-narrow), 100% - var(--space-8));
  margin-inline: auto;
}

.container--default {
  width: min(var(--content-default), 100% - var(--space-8));
  margin-inline: auto;
}

.section-pad {
  padding-block: clamp(var(--space-16), 8vw, var(--space-32));
}

.section-pad--sm {
  padding-block: clamp(var(--space-12), 5vw, var(--space-20));
}

/* ============================================
   TYPOGRAPHY UTILITIES
   ============================================ */

.label {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}

.label--accent {
  color: var(--color-primary);
}

/* ============================================
   BUTTON STYLES
   ============================================ */

.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  font-size: var(--text-sm);
  font-family: var(--font-body);
  font-weight: 500;
  letter-spacing: 0.02em;
  border-radius: var(--radius-full);
  transition: all var(--transition-interactive);
  cursor: pointer;
  white-space: nowrap;
  text-decoration: none;
}

.btn--primary {
  background: var(--color-primary);
  color: #fff;
  border: 1.5px solid var(--color-primary);
}

.btn--primary:hover {
  background: var(--color-primary-hover);
  border-color: var(--color-primary-hover);
  transform: translateY(-1px);
  box-shadow: 0 6px 20px color-mix(in srgb, var(--color-primary) 30%, transparent);
}

.btn--outline {
  background: transparent;
  color: var(--color-text);
  border: 1.5px solid var(--color-border);
}

.btn--outline:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  transform: translateY(-1px);
}

.btn--ghost {
  background: transparent;
  color: var(--color-text-muted);
  border: none;
  padding-inline: var(--space-3);
}

.btn--ghost:hover {
  color: var(--color-text);
}

/* Nav inverse buttons (on dark sections) */
.btn--outline-inv {
  background: transparent;
  color: var(--color-navy-text);
  border: 1.5px solid rgba(255,255,255,0.2);
}

.btn--outline-inv:hover {
  background: rgba(255,255,255,0.08);
  border-color: rgba(255,255,255,0.4);
}

/* ============================================
   CARD COMPONENT
   ============================================ */

.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 0;
  overflow: hidden;
  transition: transform var(--transition-interactive), box-shadow var(--transition-interactive);
}

.card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
}

/* ============================================
   CHIP / TAG
   ============================================ */

.chip {
  display: inline-flex;
  align-items: center;
  padding: var(--space-1) var(--space-3);
  font-size: var(--text-xs);
  font-family: var(--font-mono);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  border-radius: var(--radius-full);
  border: 1px solid var(--color-border);
  color: var(--color-text-muted);
  background: var(--color-surface-offset);
  white-space: nowrap;
}

.chip--accent {
  border-color: var(--color-primary-highlight);
  color: var(--color-primary);
  background: color-mix(in srgb, var(--color-primary) 8%, transparent);
}

/* ============================================
   SECTION DIVIDER
   ============================================ */

.divider {
  width: 100%;
  height: 1px;
  background: var(--color-divider);
}

/* ============================================
   AVAILABILITY BADGE
   ============================================ */

.avail-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: var(--radius-full);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-navy-muted);
  letter-spacing: 0.08em;
}

.avail-badge .dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #4ade80;
  box-shadow: 0 0 8px rgba(74, 222, 128, 0.6);
  animation: pulse-dot 2s ease-in-out infinite;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.7; transform: scale(0.85); }
}

/* ============================================
   SCROLL REVEAL
   ============================================ */

.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s cubic-bezier(0.16, 1, 0.3, 1),
              transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

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

.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.4s; }

/* ============================================
   SCREEN READER ONLY
   ============================================ */

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

/* Section heading with left rule — kept from construction system */
.section-rule {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  margin-bottom: var(--space-3);
}

.section-rule::before {
  content: '';
  display: block;
  width: 24px;
  height: 1px;
  background: var(--color-primary);
  flex-shrink: 0;
}

/* ============================================
   CAD OVERSHOOT CORNERS
   Lines extend PAST the corner intersection,
   crossing through like an AutoCAD/architectural
   drawing. Each line overshoots by --cad-overshoot.

   Usage: add class "cad-box" to any element.
   The element itself must have no border set.
   ============================================ */

.cad-box {
  position: relative;
  border: none !important;
  overflow: visible;
  --cad-overshoot: 8px;
  --cad-weight: 1px;
  --cad-color: var(--color-primary);
}

/* A single ::before, expanded beyond the element on all four sides.
   Inside it, four gradient lines span its full width/height —
   so each line starts and ends at the expanded edge = overshoot past corner. */
.cad-box::before {
  content: '';
  position: absolute;
  top:    calc(-1 * var(--cad-overshoot));
  left:   calc(-1 * var(--cad-overshoot));
  right:  calc(-1 * var(--cad-overshoot));
  bottom: calc(-1 * var(--cad-overshoot));
  pointer-events: none;
  z-index: 1;

  background:
    /* TOP — spans full pseudo width, at top edge */
    linear-gradient(var(--cad-color), var(--cad-color))
      0 0 / 100% var(--cad-weight) no-repeat,
    /* BOTTOM */
    linear-gradient(var(--cad-color), var(--cad-color))
      0 100% / 100% var(--cad-weight) no-repeat,
    /* LEFT */
    linear-gradient(var(--cad-color), var(--cad-color))
      0 0 / var(--cad-weight) 100% no-repeat,
    /* RIGHT */
    linear-gradient(var(--cad-color), var(--cad-color))
      100% 0 / var(--cad-weight) 100% no-repeat;
}

/* Keep ::after free for other uses by child elements */
/* .cad-box::after — intentionally not used here */

/* ---- Variants ---- */

/* Muted — for cards on light sections */
.cad-box--muted {
  --cad-color: var(--color-border);
}

/* Appears on hover only */
.cad-box--hover {
  --cad-color: transparent;
  transition: --cad-color var(--transition-interactive);
}
.cad-box--hover:hover {
  --cad-color: var(--color-primary);
}

/* Starts faint, brightens on hover */
.cad-box--subtle {
  --cad-color: color-mix(in srgb, var(--color-primary) 25%, transparent);
}
.cad-box--subtle:hover {
  --cad-color: var(--color-primary);
}

/* On dark navy backgrounds */
.cad-box--inv {
  --cad-color: rgba(255, 255, 255, 0.15);
}
.cad-box--inv:hover {
  --cad-color: var(--color-primary);
}

/* Larger overshoot — more dramatic effect */
.cad-box--wide {
  --cad-overshoot: 14px;
}

/* Tight overshoot — precise/minimal */
.cad-box--tight {
  --cad-overshoot: 5px;
}