/* ============================================================
   COMPONENTS — Reusable UI elements: buttons, cards, pills,
   nav, language switcher, custom cursor dot.
   Built progressively from Phase 2 onward.
   ============================================================ */

/* ----------------------------------------------------------
   BUTTONS — Phase 2
   ---------------------------------------------------------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  font-family: var(--font-body);
  font-size: var(--text-small);
  font-weight: 700;
  line-height: 1;
  text-decoration: none;
  border: none;
  cursor: pointer;
  border-radius: var(--radius-pill);
  transition:
    transform var(--dur-fast) var(--ease-out-expo),
    filter var(--dur-fast) var(--ease-out-expo);
}

.btn:hover {
  transform: scale(1.02);
  filter: brightness(1.05);
}

.btn:active {
  transform: scale(0.98);
}

/* Primary — clay fill, cream text, inner highlight */
.btn--primary {
  padding: 0.75rem 1.5rem;
  background: var(--clay);
  color: var(--cream);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.2);
}

/* Ghost — text-only with animated underline */
.btn--ghost {
  padding: 0.75rem 0;
  background: transparent;
  color: var(--ink);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-color: var(--line-strong);
  transition:
    transform var(--dur-fast) var(--ease-out-expo),
    color var(--dur-fast) var(--ease-out-expo),
    text-decoration-color var(--dur-fast) var(--ease-out-expo);
}

.btn--ghost:hover {
  color: var(--clay);
  text-decoration-color: var(--clay);
  transform: none;
  filter: none;
}

/* ----------------------------------------------------------
   LANG PILLS — Phase 2
   ---------------------------------------------------------- */

.lang-pill {
  font-family: var(--font-mono);
  font-size: var(--text-micro);
  letter-spacing: 0.08em;
  font-weight: 400;
  color: var(--ink-soft);
  background: transparent;
  border: 1px solid var(--line);
  border-radius: var(--radius-pill);
  padding: 0.25rem 0.625rem;
  cursor: pointer;
  line-height: 1.5;
  transition:
    background var(--dur-fast) var(--ease-out-expo),
    color var(--dur-fast) var(--ease-out-expo),
    border-color var(--dur-fast) var(--ease-out-expo);
}

.lang-pill:hover {
  border-color: var(--ink-mute);
  color: var(--ink);
}

.lang-pill.is-active {
  background: var(--clay);
  color: var(--cream);
  border-color: var(--clay);
}

/* ----------------------------------------------------------
   HAMBURGER BARS — Phase 2
   ---------------------------------------------------------- */

.hamburger-bar {
  display: block;
  width: 22px;
  height: 1.5px;
  background: var(--ink);
  border-radius: 2px;
  transform-origin: center;
  transition:
    transform var(--dur-base) var(--ease-out-expo),
    opacity var(--dur-fast) var(--ease-out-expo);
}

/* Animate bars into × when open */
.site-header__hamburger.is-open .hamburger-bar:nth-child(1) {
  transform: translateY(6.5px) rotate(45deg);
}

.site-header__hamburger.is-open .hamburger-bar:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}

.site-header__hamburger.is-open .hamburger-bar:nth-child(3) {
  transform: translateY(-6.5px) rotate(-45deg);
}

/* ----------------------------------------------------------
   NAV OVERLAY — Phase 2 (mobile full-screen menu)
   ---------------------------------------------------------- */

.nav-overlay {
  position: fixed;
  inset: 0;
  z-index: 99;
  background: var(--paper);
  background-image: var(--texture-noise);
  background-repeat: repeat;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--space-8) var(--space-4);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--dur-base) var(--ease-out-expo);
}

.nav-overlay.is-open {
  opacity: 1;
  pointer-events: auto;
}

.nav-overlay nav {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-6);
  width: 100%;
}

.nav-overlay ul {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-4);
}

/* Large serif links — staggered reveal */
.nav-overlay ul a {
  font-family: var(--font-display);
  font-size: var(--text-h2);
  font-weight: 400;
  color: var(--ink);
  text-decoration: none;
  opacity: 0;
  transform: translateY(16px);
  transition:
    opacity var(--dur-slow) var(--ease-out-expo),
    transform var(--dur-slow) var(--ease-out-expo),
    color var(--dur-fast) var(--ease-out-expo);
}

.nav-overlay.is-open ul a {
  opacity: 1;
  transform: translateY(0);
}

.nav-overlay ul a:hover {
  color: var(--clay);
}

/* Stagger each link in */
.nav-overlay ul li:nth-child(1) a { transition-delay: 60ms;  }
.nav-overlay ul li:nth-child(2) a { transition-delay: 110ms; }
.nav-overlay ul li:nth-child(3) a { transition-delay: 160ms; }
.nav-overlay ul li:nth-child(4) a { transition-delay: 210ms; }
.nav-overlay ul li:nth-child(5) a { transition-delay: 260ms; }

/* CTA in overlay */
.nav-overlay .btn {
  opacity: 0;
  transform: translateY(16px);
  transition:
    opacity var(--dur-slow) var(--ease-out-expo),
    transform var(--dur-slow) var(--ease-out-expo),
    filter var(--dur-fast) var(--ease-out-expo),
    transform var(--dur-fast) var(--ease-out-expo);
  transition-delay: 310ms;
}

.nav-overlay.is-open .btn {
  opacity: 1;
  transform: translateY(0);
}

/* ----------------------------------------------------------
   STAT CARD — Phase 5
   ---------------------------------------------------------- */

.stat-card {
  background: var(--linen);
  border-radius: var(--radius-lg); /* 20px */
  padding: var(--space-5); /* 32px */
  display: flex;
  flex-direction: column;
  gap: var(--space-2); /* 8px between number and label */
}

.stat-card__num {
  font-family: var(--font-display);
  font-size: var(--text-h2); /* clamp(2rem, 4vw, 3.5rem) */
  font-weight: 400;
  color: var(--ink);
  line-height: 1;
}

/* ----------------------------------------------------------
   CARDS (staff cards, portfolio tiles)
   Phase 7+
   ---------------------------------------------------------- */

/* ----------------------------------------------------------
   CURSOR DOT
   Phase 3 (optional — hero only, desktop only)
   ---------------------------------------------------------- */

.cursor-dot {
  position: fixed;
  top: 0;
  left: 0;
  z-index: 9000;
  width: 10px;
  height: 10px;
  border-radius: var(--radius-pill);
  background: var(--clay);
  pointer-events: none;
  opacity: 0;
  transform: translate(-50%, -50%);
  transition:
    opacity var(--dur-fast) var(--ease-out-expo),
    width var(--dur-base) var(--ease-out-expo),
    height var(--dur-base) var(--ease-out-expo);
  will-change: transform;
}

.cursor-dot.is-visible {
  opacity: 1;
}

.cursor-dot.is-grown {
  width: 28px;
  height: 28px;
}