/* IDPE Design System — Components */

/* === BUTTONS === */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: var(--fs-body-sm);
  letter-spacing: var(--tr-wide);
  text-transform: uppercase;
  padding: 14px 24px;
  border: 1px solid transparent;
  border-radius: var(--r-sm);
  cursor: pointer;
  text-decoration: none;
  transition: all var(--dur-base) var(--ease-out);
  line-height: 1;
  white-space: nowrap;
}
.btn--primary {
  background: var(--primary);
  color: var(--primary-fg);
  border-color: var(--primary);
}
.btn--primary:hover {
  background: var(--primary-hover);
  border-color: var(--primary-hover);
  transform: translateY(-1px);
}
.btn--secondary {
  background: transparent;
  color: var(--fg);
  border-color: var(--fg);
}
.btn--secondary:hover {
  background: var(--fg);
  color: var(--bg);
}
.btn--ghost {
  background: transparent;
  color: var(--primary);
  border-color: transparent;
  padding-left: 0;
  padding-right: 0;
}
.btn--ghost::after {
  content: "→";
  margin-left: 4px;
  transition: transform var(--dur-base) var(--ease-out);
}
.btn--ghost:hover::after { transform: translateX(6px); }
.btn--accent {
  background: var(--accent);
  color: var(--idpe-ink-950);
  border-color: var(--accent);
}
.btn--sm { padding: 10px 16px; font-size: var(--fs-caption); }
.btn--lg { padding: 18px 32px; font-size: var(--fs-body); }
.btn[disabled] { opacity: 0.4; cursor: not-allowed; }

/* === FORM === */
.field {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.field__label {
  font-size: var(--fs-caption);
  letter-spacing: var(--tr-wide);
  text-transform: uppercase;
  color: var(--fg-muted);
  font-weight: 600;
}
.field__input,
.field__select,
.field__textarea {
  font-family: inherit;
  font-size: var(--fs-body);
  color: var(--fg);
  background: var(--bg-elev);
  border: 1px solid var(--rule);
  border-bottom: 1px solid var(--fg);
  border-radius: var(--r-sm);
  padding: 14px 16px;
  width: 100%;
  transition: border-color var(--dur-fast) var(--ease-out);
}
.field__input:focus,
.field__select:focus,
.field__textarea:focus {
  outline: none;
  border-color: var(--primary);
  border-bottom-color: var(--primary);
  box-shadow: 0 0 0 3px var(--idpe-cobalt-100);
}
.field__textarea { resize: vertical; min-height: 100px; }
.field__hint {
  font-size: var(--fs-caption);
  color: var(--fg-muted);
}

/* === CARDS === */
.card {
  background: var(--bg-elev);
  border: 1px solid var(--rule);
  border-radius: var(--r-sm);
  padding: 32px;
  transition: border-color var(--dur-base) var(--ease-out), transform var(--dur-base) var(--ease-out);
}
.card:hover { border-color: var(--rule-strong); }
.card__num {
  font-family: var(--font-sans);
  font-variant-numeric: tabular-nums;
  font-size: var(--fs-caption);
  letter-spacing: var(--tr-wide);
  color: var(--accent);
  font-weight: 600;
}
.card__title {
  font-size: var(--fs-h4);
  font-weight: 600;
  letter-spacing: var(--tr-snug);
  margin: 16px 0 8px;
}
.card__desc {
  color: var(--fg-muted);
  line-height: var(--lh-relaxed);
  font-size: var(--fs-body-sm);
  margin: 0;
}
.card--feature {
  padding: 40px;
  border-top: 3px solid var(--primary);
}
.card--dark {
  background: var(--bg-deep);
  color: #fff;
  border-color: var(--bg-deep);
}
.card--dark .card__desc { color: var(--idpe-cobalt-200); }

/* === BADGES & CHIPS === */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: var(--fs-eyebrow);
  letter-spacing: var(--tr-eyebrow);
  text-transform: uppercase;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: var(--r-sm);
  background: var(--idpe-cobalt-100);
  color: var(--primary);
}
.badge--accent { background: var(--idpe-accent-100); color: var(--idpe-accent-700); }
.badge--success { background: #dcefe5; color: var(--idpe-success); }
.badge--warning { background: #f5e8cf; color: var(--idpe-warning); }
.badge--danger { background: #f3d9d2; color: var(--idpe-danger); }

/* === RULES === */
.rule {
  height: 1px;
  background: var(--rule);
  margin: 0;
  border: 0;
}
.rule--strong { background: var(--rule-strong); height: 1px; }
.rule--accent { background: var(--accent); height: 2px; width: 48px; }

/* === COLOR SWATCH === */
.swatches {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: 12px;
}
.swatch {
  display: flex;
  flex-direction: column;
  border: 1px solid var(--rule);
  border-radius: var(--r-sm);
  overflow: hidden;
  background: var(--bg-elev);
}
.swatch__chip {
  height: 96px;
  position: relative;
}
.swatch__chip--bordered { border-bottom: 1px solid var(--rule); }
.swatch__meta {
  padding: 12px 14px;
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.swatch__name {
  font-size: var(--fs-body-sm);
  font-weight: 600;
}
.swatch__hex {
  font-family: var(--font-mono);
  font-size: var(--fs-caption);
  color: var(--fg-muted);
  letter-spacing: 0;
}

/* Color row (large feature) */
.color-feature {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  border: 1px solid var(--rule);
  background: var(--bg-elev);
  margin-bottom: 32px;
  min-height: 280px;
}
.color-feature__chip {
  position: relative;
  display: flex;
  align-items: flex-end;
  padding: 32px;
  color: #fff;
}
.color-feature__chip-name {
  font-size: var(--fs-h2);
  font-weight: 700;
  letter-spacing: var(--tr-tight);
  margin: 0;
}
.color-feature__chip-sub {
  font-size: var(--fs-caption);
  letter-spacing: var(--tr-eyebrow);
  text-transform: uppercase;
  opacity: 0.7;
  position: absolute;
  top: 32px;
  left: 32px;
}
.color-feature__meta {
  padding: 32px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.color-feature__row {
  display: flex;
  justify-content: space-between;
  border-bottom: 1px solid var(--rule);
  padding-bottom: 12px;
  font-size: var(--fs-body-sm);
}
.color-feature__row-label {
  color: var(--fg-muted);
  letter-spacing: var(--tr-wide);
  text-transform: uppercase;
  font-size: var(--fs-eyebrow);
}
.color-feature__row-val {
  font-family: var(--font-mono);
  font-size: var(--fs-body-sm);
}

/* === TYPE SPECIMEN === */
.type-row {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 32px;
  padding: 28px 0;
  border-top: 1px solid var(--rule);
  align-items: baseline;
}
.type-row:last-child { border-bottom: 1px solid var(--rule); }
.type-row__meta {
  font-size: var(--fs-caption);
  color: var(--fg-muted);
  letter-spacing: var(--tr-wide);
  text-transform: uppercase;
  font-family: var(--font-mono);
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.type-row__meta strong {
  color: var(--fg);
  font-size: var(--fs-body-sm);
  font-weight: 600;
  font-family: var(--font-sans);
  letter-spacing: 0;
  text-transform: none;
}
.type-row__sample { margin: 0; }

/* === GRID OVERLAY (for grid section) === */
.grid-demo {
  position: relative;
  background: var(--bg-elev);
  border: 1px solid var(--rule);
  padding: 32px;
}
.grid-demo__overlay {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 24px;
  position: relative;
}
.grid-demo__col {
  background: var(--idpe-cobalt-100);
  height: 80px;
  position: relative;
}
.grid-demo__col-num {
  position: absolute;
  top: 8px;
  left: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--primary);
}

/* === LOGO BOXES === */
.logo-box {
  background: var(--bg-elev);
  border: 1px solid var(--rule);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 48px;
  min-height: 220px;
  position: relative;
  overflow: hidden;
}
.logo-box--blue       { background: var(--primary); border-color: transparent; }
.logo-box--ink        { background: var(--idpe-ink-950); border-color: transparent; }
.logo-box--paper      { background: var(--bg-subtle); }
.logo-box--paper-dark { background: #3C3C3B; border-color: transparent; }
.logo-box img { max-width: 72%; max-height: 140px; object-fit: contain; }
.logo-box__label {
  position: absolute;
  bottom: 14px;
  left: 16px;
  font-size: var(--fs-eyebrow);
  letter-spacing: var(--tr-eyebrow);
  text-transform: uppercase;
  color: var(--fg-muted);
  font-family: var(--font-mono);
}
.logo-box--blue       .logo-box__label,
.logo-box--ink        .logo-box__label,
.logo-box--paper-dark .logo-box__label { color: rgba(255,255,255,0.6); }
.logo-box--dont {
  border: 1px solid var(--idpe-danger);
  background: rgba(179,54,31,0.04);
}
.logo-box--dont::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(to top right, transparent calc(50% - 1px), var(--idpe-danger) calc(50% - 1px), var(--idpe-danger) calc(50% + 1px), transparent calc(50% + 1px));
  pointer-events: none;
  opacity: 0.4;
}

/* === ICON CARDS === */
.icon-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: 1px;
  background: var(--rule);
  border: 1px solid var(--rule);
}
.icon-cell {
  background: var(--bg-elev);
  padding: 24px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  text-align: center;
}
.icon-cell svg {
  width: 32px;
  height: 32px;
  stroke: var(--fg);
  fill: none;
  stroke-width: 1.4;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.icon-cell__name {
  font-size: var(--fs-eyebrow);
  letter-spacing: var(--tr-eyebrow);
  text-transform: uppercase;
  color: var(--fg-muted);
  font-family: var(--font-mono);
}

/* Hexagonal frame */
.hex {
  clip-path: polygon(25% 0%, 75% 0%, 100% 50%, 75% 100%, 25% 100%, 0% 50%);
}

/* Generic stack utilities */
.stack { display: flex; flex-direction: column; }
.stack-row { display: flex; align-items: center; }
.gap-1 { gap: 4px; } .gap-2 { gap: 8px; } .gap-3 { gap: 12px; }
.gap-4 { gap: 16px; } .gap-6 { gap: 24px; } .gap-8 { gap: 32px; }
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
@media (max-width: 800px) { .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; } }

/* Spacing demo */
.space-demo {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.space-demo__row {
  display: grid;
  grid-template-columns: 80px 1fr 60px;
  gap: 16px;
  align-items: center;
  font-size: var(--fs-body-sm);
}
.space-demo__name {
  font-family: var(--font-mono);
  color: var(--fg-muted);
  font-size: var(--fs-caption);
}
.space-demo__bar {
  height: 24px;
  background: var(--idpe-cobalt-200);
  border-left: 2px solid var(--primary);
}
.space-demo__val {
  font-family: var(--font-mono);
  color: var(--fg-muted);
  font-size: var(--fs-caption);
  text-align: right;
}