/* EUROCUTPRECISION — Component Library (implements docs/41-44) */

/* ===== Header / Navigation (docs/43) ===== */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: var(--color-neutral-0);
  border-bottom: 1px solid var(--color-neutral-300);
}
.site-header__inner { display: flex; align-items: center; justify-content: space-between; height: 72px; }
.site-header__logo { font-weight: 700; font-size: 18px; letter-spacing: 0.02em; color: var(--color-neutral-900); }
.site-nav { display: flex; gap: var(--space-6); list-style: none; margin: 0; padding: 0; }
.site-nav a { color: var(--color-neutral-700); font-size: var(--type-small-size); }
.site-nav a[aria-current="page"] { color: var(--color-neutral-900); font-weight: 600; }
.site-header__actions { display: flex; align-items: center; gap: var(--space-4); }
.rfq-indicator { position: relative; font-size: var(--type-small-size); color: var(--color-neutral-700); }
.rfq-indicator__count {
  display: inline-flex; align-items: center; justify-content: center;
  min-width: 18px; height: 18px; padding: 0 4px; margin-left: 4px;
  background: var(--color-accent-500); color: #fff; border-radius: var(--radius-full);
  font-size: 11px; font-weight: 600;
}
.nav-toggle { display: none; background: none; border: 1px solid var(--color-neutral-500); border-radius: var(--radius-sm); padding: var(--space-2) var(--space-3); font-size: 16px; }
@media (max-width: 1023px) {
  .site-nav { display: none; }
  .nav-toggle { display: inline-flex; }
  .site-nav.is-open {
    display: flex; flex-direction: column; position: absolute; top: 72px; left: 0; right: 0;
    background: var(--color-neutral-0); border-bottom: 1px solid var(--color-neutral-300);
    padding: var(--space-4) var(--space-6); gap: var(--space-3);
  }
}

/* ===== Footer (docs/43) ===== */
.site-footer { background: var(--color-neutral-900); color: var(--color-neutral-300); padding: var(--space-16) 0 var(--space-8); }
.site-footer h3 { color: var(--color-neutral-0); font-size: var(--type-small-size); margin-bottom: var(--space-3); }
.site-footer a { color: var(--color-neutral-300); font-size: var(--type-small-size); }
.site-footer a:hover { color: var(--color-neutral-0); }
.footer-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--space-8); margin-bottom: var(--space-10); }
.footer-grid ul { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: var(--space-2); }
.footer-bottom { display: flex; justify-content: space-between; align-items: center; border-top: 1px solid var(--color-neutral-700); padding-top: var(--space-6); flex-wrap: wrap; gap: var(--space-4); }
.footer-bottom small { color: var(--color-neutral-500); }
@media (max-width: 1023px) { .footer-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 639px) { .footer-grid { grid-template-columns: 1fr; } .footer-bottom { flex-direction: column; align-items: flex-start; } }

/* ===== Breadcrumbs (docs/41) ===== */
.breadcrumb { padding: var(--space-3) 0; font-size: var(--type-small-size); color: var(--color-neutral-500); }
.breadcrumb ol { list-style: none; display: flex; flex-wrap: wrap; gap: var(--space-1); margin: 0; padding: 0; }
.breadcrumb li:not(:last-child)::after { content: "/"; margin-left: var(--space-1); color: var(--color-neutral-300); }
.breadcrumb a { color: var(--color-neutral-500); }
.breadcrumb [aria-current="page"] { color: var(--color-neutral-900); font-weight: 600; }

/* ===== Button (docs/41) ===== */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: var(--space-2);
  font-family: var(--font-sans); font-size: var(--type-small-size); font-weight: 600;
  padding: var(--space-3) var(--space-6); border-radius: var(--radius-sm);
  border: 1.5px solid transparent; cursor: pointer; min-height: 44px;
  transition: transform var(--motion-fast) var(--motion-easing);
}
.btn:active { transform: translateY(1px); }
.btn--primary { background: var(--color-accent-500); color: #fff; }
.btn--primary:hover { background: var(--color-accent-700); text-decoration: none; }
.btn--secondary { background: transparent; color: var(--color-neutral-900); border-color: var(--color-neutral-500); }
.btn--secondary:hover { border-color: var(--color-neutral-900); text-decoration: none; }
.btn--tertiary { background: transparent; color: var(--color-accent-700); border: none; padding: var(--space-2) 0; min-height: auto; }
.btn--tertiary:hover { text-decoration: underline; }
.btn--block { width: 100%; }

/* ===== Inputs / Forms (docs/41, docs/43) ===== */
.form-field { margin-bottom: var(--space-5); }
.form-field label { display: block; font-size: var(--type-small-size); font-weight: 600; color: var(--color-neutral-900); margin-bottom: var(--space-2); }
.form-field .required { color: var(--color-error-700); }
.form-field .hint { display: block; font-size: var(--type-caption-size); color: var(--color-neutral-500); margin-top: var(--space-1); }
.form-field input, .form-field select, .form-field textarea {
  width: 100%; font-family: var(--font-sans); font-size: var(--type-body-size);
  padding: var(--space-3); border: 1.5px solid var(--color-neutral-500); border-radius: var(--radius-sm);
  background: var(--color-neutral-0); color: var(--color-neutral-900);
}
.form-field input:focus, .form-field select:focus, .form-field textarea:focus { border-color: var(--color-accent-500); }
.form-field textarea { min-height: 110px; resize: vertical; }
.form-field.has-error input, .form-field.has-error textarea, .form-field.has-error select { border-color: var(--color-error-700); }
.form-checkbox.has-error { outline: 1.5px solid var(--color-error-700); outline-offset: 4px; border-radius: var(--radius-sm); }
.form-checkbox .error-message { display: block; color: var(--color-error-700); font-size: var(--type-caption-size); margin-top: var(--space-1); }
.form-field .error-message { display: block; color: var(--color-error-700); font-size: var(--type-caption-size); margin-top: var(--space-1); }
.form-checkbox { display: flex; align-items: flex-start; gap: var(--space-2); font-size: var(--type-small-size); }
.form-checkbox input { width: auto; margin-top: 3px; }
.error-summary {
  background: var(--color-error-100); border: 1px solid var(--color-error-700); border-radius: var(--radius-sm);
  padding: var(--space-4); margin-bottom: var(--space-5); color: var(--color-error-700); font-size: var(--type-small-size);
}
.error-summary[hidden] { display: none; }

/* ===== Badge (docs/41) ===== */
.badge {
  display: inline-flex; align-items: center; font-size: var(--type-caption-size); font-weight: 600;
  padding: var(--space-1) var(--space-3); border-radius: var(--radius-full);
  background: var(--color-neutral-100); color: var(--color-neutral-700);
}
.badge--accent { background: var(--color-accent-100); color: var(--color-accent-700); }

/* ===== Alert / Toast / Status (docs/41, docs/44) ===== */
.alert { padding: var(--space-4); border-radius: var(--radius-sm); font-size: var(--type-small-size); margin-bottom: var(--space-5); }
.alert--info { background: var(--color-neutral-100); color: var(--color-neutral-900); }
.alert--success { background: var(--color-success-100); color: var(--color-success-700); }
.alert--error { background: var(--color-error-100); color: var(--color-error-700); }
.toast {
  position: fixed; bottom: var(--space-6); right: var(--space-6); z-index: 200;
  background: var(--color-neutral-900); color: #fff; padding: var(--space-3) var(--space-5);
  border-radius: var(--radius-sm); box-shadow: var(--shadow-sm); font-size: var(--type-small-size);
  opacity: 0; transform: translateY(8px); transition: opacity var(--motion-base) var(--motion-easing), transform var(--motion-base) var(--motion-easing);
  pointer-events: none;
}
.toast.is-visible { opacity: 1; transform: translateY(0); }

/* ===== Card (docs/42) ===== */
.card { background: var(--color-neutral-0); border: 1px solid var(--color-neutral-500); border-radius: var(--radius-md); box-shadow: var(--shadow-none); padding: var(--space-6); }
.card--link { display: block; color: inherit; }
.card--link:hover { border-color: var(--color-neutral-900); text-decoration: none; }
.card h3 { margin-bottom: var(--space-2); }
.card p { margin: 0; color: var(--color-neutral-700); font-size: var(--type-small-size); }

/* ===== Data Table / Specification Table (docs/42) ===== */
table.data { width: 100%; border-collapse: collapse; font-size: var(--type-small-size); }
table.data caption { text-align: left; font-weight: 600; color: var(--color-neutral-900); padding-bottom: var(--space-3); font-family: var(--font-sans); }
table.data th, table.data td { text-align: left; padding: var(--space-3) var(--space-4); border-bottom: 1px solid var(--color-neutral-300); }
table.data thead th { color: var(--color-neutral-500); font-size: var(--type-caption-size); text-transform: uppercase; letter-spacing: 0.04em; font-family: var(--font-sans); font-weight: 600; background: var(--color-neutral-0); }
table.data tbody tr:hover { background: var(--color-neutral-100); }
table.data tbody tr:nth-child(even) { background: rgba(238,240,243,0.5); }
@media (max-width: 639px) {
  table.data.stack-mobile thead { display: none; }
  table.data.stack-mobile, table.data.stack-mobile tbody, table.data.stack-mobile tr, table.data.stack-mobile td { display: block; width: 100%; }
  table.data.stack-mobile tr { border-bottom: 2px solid var(--color-neutral-300); padding: var(--space-3) 0; }
  table.data.stack-mobile td { border: none; padding: var(--space-1) 0; }
  table.data.stack-mobile td::before { content: attr(data-label); display: block; font-size: var(--type-caption-size); color: var(--color-neutral-500); text-transform: uppercase; }
}

/* ===== Feature List (docs/42) ===== */
.feature-list { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-8); list-style: none; margin: 0; padding: 0; }
.feature-list li { text-align: center; }
.feature-icon {
  width: 44px; height: 44px; border-radius: var(--radius-full); border: 2px solid var(--color-accent-500);
  display: flex; align-items: center; justify-content: center; margin: 0 auto var(--space-4);
  color: var(--color-accent-500); font-weight: 700;
}
@media (max-width: 639px) { .feature-list { grid-template-columns: 1fr; gap: var(--space-6); } }

/* ===== Download Card (docs/42) ===== */
.download-card { display: flex; align-items: center; justify-content: space-between; gap: var(--space-4); padding: var(--space-4); border: 1px solid var(--color-neutral-500); border-radius: var(--radius-sm); }
.download-card__meta { font-size: var(--type-caption-size); color: var(--color-neutral-500); }
.download-card__title { font-weight: 600; color: var(--color-neutral-900); }

/* ===== Technical drawing frame (identity device, D-012) ===== */
.tech-drawing-frame { background: var(--color-neutral-100); display: flex; align-items: center; justify-content: center; padding: var(--space-8); }
.tech-drawing-frame svg { width: 100%; height: auto; }
.tech-drawing-label { font-family: var(--font-mono); font-size: var(--type-caption-size); color: var(--color-neutral-500); text-transform: uppercase; letter-spacing: 0.05em; text-align: center; margin-bottom: var(--space-3); }

/* ===== Photo placeholder (honest, per docs/32-33 fallback rule) ===== */
.photo-placeholder {
  background: var(--color-neutral-100); border: 1px dashed var(--color-neutral-300);
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  min-height: 320px; padding: var(--space-6); text-align: center; color: var(--color-neutral-500);
}
.photo-placeholder .type-caption { max-width: 260px; }

/* ===== Proof strip stat (docs/42 Technical Data Block) ===== */
.stat-block .type-caption { color: var(--color-neutral-500); text-transform: uppercase; letter-spacing: 0.04em; display: block; margin-bottom: var(--space-1); }
.stat-block .stat-value { font-family: var(--font-mono); font-size: 20px; font-weight: 600; color: var(--color-neutral-900); }

/* ===== Accordion (docs/41) ===== */
.accordion-item { border-bottom: 1px solid var(--color-neutral-300); }
.accordion-trigger {
  width: 100%; text-align: left; background: none; border: none; cursor: pointer;
  padding: var(--space-4) 0; display: flex; justify-content: space-between; align-items: center;
  font-family: var(--font-sans); font-size: var(--type-body-size); font-weight: 600; color: var(--color-neutral-900);
}
.accordion-trigger .chevron { transition: transform var(--motion-base) var(--motion-easing); }
.accordion-trigger[aria-expanded="true"] .chevron { transform: rotate(180deg); }
.accordion-panel { overflow: hidden; max-height: 0; transition: max-height var(--motion-base) var(--motion-easing); }
.accordion-panel:not([hidden]) { max-height: 400px; padding-bottom: var(--space-4); }
.accordion-panel p { margin: 0; font-size: var(--type-small-size); color: var(--color-neutral-700); }

/* ===== Utility layout ===== */
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-10); align-items: center; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-6); }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--space-6); }
@media (max-width: 1023px) { .grid-2 { grid-template-columns: 1fr; } .grid-3 { grid-template-columns: repeat(2, 1fr); } .grid-4 { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 639px) { .grid-3 { grid-template-columns: 1fr; } .grid-4 { grid-template-columns: 1fr; } }
.text-center { text-align: center; }
.mt-0 { margin-top: 0; }
.stack { display: flex; flex-direction: column; gap: var(--space-4); }
.cluster { display: flex; gap: var(--space-4); flex-wrap: wrap; align-items: center; }