/* ============================================================
   LUMARKEN — design-system.css
   Reusable components: buttons, cards, tags, forms, marks.
   Buttons and cards use shadow — never border — for edges.
   ============================================================ */

/* ---------------------------------------------- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.625rem;
  padding: 0.9375rem 1.875rem;
  font-family: var(--font-text);
  font-size: var(--fs-small);
  font-weight: 600;
  letter-spacing: 0.02em;
  border-radius: var(--radius-pill);
  background: var(--color-surface);
  color: var(--color-ink);
  box-shadow: var(--shadow-btn);
  transition:
    transform var(--raw-dur-fast) var(--raw-ease-out),
    box-shadow var(--raw-dur-fast) var(--raw-ease-out),
    background-color var(--raw-dur-fast) var(--raw-ease-out);
  will-change: transform;
}

.btn:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-btn-hover);
}

.btn:active {
  transform: translateY(0);
  box-shadow: var(--shadow-btn-active);
}

.btn .btn__arrow {
  transition: transform var(--raw-dur-fast) var(--raw-ease-out);
}

.btn:hover .btn__arrow {
  transform: translateX(4px);
}

.btn--ink {
  background: var(--color-ink);
  color: var(--color-ink-inverse);
}

.btn--large {
  padding: 1.125rem 2.25rem;
  font-size: 1rem;
}

.btn--quiet {
  background: transparent;
  box-shadow: none;
  padding-inline: 0.25rem;
  gap: 0.5rem;
}

.btn--quiet:hover {
  transform: none;
  box-shadow: none;
  color: var(--color-accent);
}

/* ------------------------------------------------- Cards --- */
.card {
  background: var(--color-surface);
  border-radius: var(--radius-l);
  box-shadow: var(--shadow-card);
  padding: clamp(1.5rem, 1.2rem + 1.5vw, 2.5rem);
  transition:
    transform var(--raw-dur-base) var(--raw-ease-out),
    box-shadow var(--raw-dur-base) var(--raw-ease-out);
}

.card--hover:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-card-hover);
}

.card--flush { padding: 0; overflow: hidden; }

/* -------------------------------------------------- Tags --- */
.tag {
  display: inline-block;
  padding: 0.375rem 0.875rem;
  font-size: var(--fs-label);
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-ink-soft);
  background: var(--color-bg);
  border-radius: var(--radius-pill);
  box-shadow: inset 0 0 0 1px var(--color-line);
}

.tag-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

/* ------------------------------------------------- Forms --- */
.field {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.field label {
  font-size: var(--fs-small);
  font-weight: 600;
}

.field input,
.field select,
.field textarea {
  width: 100%;
  padding: 0.9375rem 1.125rem;
  background: var(--color-surface);
  border: none;
  border-radius: var(--radius-m);
  box-shadow: inset 0 0 0 1px var(--color-line), 0 1px 2px var(--raw-ink-a04);
  transition: box-shadow var(--raw-dur-fast) var(--raw-ease-out);
  appearance: none;
}

.field select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' fill='none' stroke='%23002B35' stroke-width='1.5'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 1.125rem center;
  padding-right: 2.75rem;
}

.field input:hover,
.field select:hover,
.field textarea:hover {
  box-shadow: inset 0 0 0 1px var(--color-line-strong), 0 1px 2px var(--raw-ink-a04);
}

.field input:focus,
.field select:focus,
.field textarea:focus {
  outline: none;
  box-shadow: inset 0 0 0 2px var(--color-focus), 0 1px 2px var(--raw-ink-a04);
}

.field textarea {
  min-height: 9rem;
  resize: vertical;
}

.field ::placeholder {
  color: var(--color-ink-faint);
}

/* -------------------------------------------- Big number --- */
.numeral {
  font-family: var(--font-display);
  font-size: var(--fs-stat);
  font-weight: 400;
  line-height: 1;
  letter-spacing: -0.02em;
  font-variant-numeric: tabular-nums;
}

/* --------------------------------------------- Wordmark --- */
.wordmark {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(1.25rem, 1.1rem + 0.5vw, 1.5rem);
  letter-spacing: -0.015em;
  line-height: 1;
}

/* The full stop in "Lumarken." */
.wordmark b {
  font-weight: inherit;
  color: var(--color-accent-soft);
}