/* =========================================================
   Layer Nine — Components
   Buttons (pills), chips, inputs, cards, nav, brand mark.
   Depends on tokens.css + foundations.css.
   ========================================================= */

/* ---------------- Pills (buttons) ---------------- */
.pill {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 23px;
  border-radius: var(--radius-pill);
  font-weight: 500;
  font-size: 15px;
  letter-spacing: -0.005em;
  line-height: 1;
  border: 1px solid transparent;
  transition: background-color var(--t-fast) ease,
              color var(--t-fast) ease,
              border-color var(--t-fast) ease,
              transform var(--t-base) var(--ease-out);
  white-space: nowrap;
}
.pill--lg    { padding: 13px 23px; font-size: 15px; min-height: 49px; }
.pill--block { width: 100%; }

.pill--dark  { background: var(--ink); color: var(--on-dark); }
.pill--dark:hover { background: #2a2a22; }

.pill--ghost { color: var(--ink); border-color: var(--line); }
.pill--ghost:hover { border-color: var(--line-strong); background: rgba(20,20,15,0.03); }

.pill--sage  { background: var(--sage); color: var(--ink); }
.pill--sage:hover { background: #a8b58e; }

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

/* ---------------- Chips (mono labels) ---------------- */
.chip {
  display: inline-flex;
  align-items: center;
  height: 32px;
  padding: 0 13px;
  border-radius: var(--radius-pill);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink);
  border: 1px solid transparent;
  white-space: nowrap;
}
.chip--sage       { background: var(--sage); border-color: var(--sage); color: var(--ink); }
.chip--dark       { background: var(--ink);  border-color: var(--ink);  color: var(--on-dark); }
.chip--ghost      { color: var(--ink);     border-color: var(--line);      background: transparent; }
.chip--ghost-dark { color: var(--on-dark); border-color: var(--line-dark); background: transparent; }

/* ---------------- Inputs ---------------- */
.input {
  background: transparent;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 14px 16px;
  color: var(--ink);
  font: inherit;
  font-size: 15px;
  letter-spacing: -0.005em;
  font-family: var(--font-sans);
  transition: border-color var(--t-fast) ease, background-color var(--t-fast) ease;
}
.input::placeholder { color: var(--ink-faded); }
.input:focus {
  outline: none;
  border-color: var(--line-strong);
  background: rgba(20,20,15,0.02);
}
.input--area { resize: vertical; min-height: 120px; line-height: 1.5; }

/* Inputs on dark surfaces */
.input--invert {
  border-color: var(--line-dark);
  color: var(--on-dark);
}
.input--invert::placeholder { color: var(--on-dark-faded); }
.input--invert:focus {
  border-color: rgba(255,255,255,0.3);
  background: rgba(255,255,255,0.02);
}

.form {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

/* ---------------- Cards ---------------- */
.card {
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: var(--radius-card);
  padding: 29px 25px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  min-height: 248px;
  transition: transform var(--t-slow) var(--ease-out),
              border-color var(--t-base) ease,
              box-shadow var(--t-slow) ease;
}
.card--cream { background: var(--bg-cream); border-radius: var(--radius-card-lg); }
.card--sage  { background: var(--bg-sage);  border-radius: var(--radius-card-lg); }
.card--tall  { min-height: 240px; padding: 28px 24px; }
.card__head  { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.card__body  {
  font-size: 16px;
  line-height: 1.55;
  color: var(--ink-body);
}
.card .h3 + .card__body { margin-top: 8px; }
.card--tall .h3 { margin-top: auto; }
.card--tall .card__body { margin-top: 8px; }

.card:hover {
  transform: translateY(-3px);
  border-color: var(--line-strong);
  box-shadow: 0 18px 40px -28px rgba(20, 20, 15, 0.18);
}

/* ---------------- Nav ---------------- */
.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(244, 242, 236, 0.85);
  backdrop-filter: saturate(180%) blur(12px);
  -webkit-backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--line);
}
.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 73px;
  gap: 24px;
}
.nav__links {
  display: flex;
  align-items: center;
  gap: 32px;
  font-size: 14px;
  color: var(--ink);
}
.nav__links a:not(.pill) {
  color: var(--ink);
  transition: color var(--t-fast) ease;
}
.nav__links a:not(.pill):hover { color: var(--ink-mute); }
.nav__links .pill { padding: 10px 19px; min-height: 37px; font-size: 14px; }

@media (max-width: 880px) {
  .nav__links { gap: 16px; }
  .nav__links a:not(.pill) { display: none; }
}

/* ---------------- Brand mark ---------------- */
.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  letter-spacing: -0.005em;
  color: var(--ink);
}
.brand__name { font-size: 18px; }
.brand__mark {
  width: 18px; height: 18px;
  background: var(--ink);
  -webkit-mask: url("../assets/logo.png") no-repeat center / contain;
  mask: url("../assets/logo.png") no-repeat center / contain;
  transition: transform .6s var(--ease-out);
}
.brand:hover .brand__mark { transform: rotate(180deg); }