/* =========================================================
   Layout — Global Page Structure
   ========================================================= */

/* --- Reset & Base ---------------------------------------- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-serif);
  font-weight: var(--weight-regular);
  font-size: var(--text-base);
  line-height: var(--leading-normal);
  color: var(--color-ink);
  background-color: var(--color-bg);
  height: 100vh;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

/* --- Page Container -------------------------------------- */
.page-wrap {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--content-px);
}

/* --- Site Header ----------------------------------------- */
.site-header {
  padding: var(--sp-8) 0 var(--sp-3);
  text-align: center;
  position: relative;
  flex-shrink: 0;
}

.site-header__eyebrow {
  font-family: var(--font-sans);
  font-size: var(--text-xs);
  font-weight: var(--weight-medium);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: var(--sp-4);
  display: block;
}

.site-header__title {
  font-size: clamp(var(--text-lg), 3vw, var(--text-2xl));
  font-weight: var(--weight-bold);
  line-height: var(--leading-tight);
  letter-spacing: -0.01em;
  color: var(--color-ink);
  margin-bottom: var(--sp-3);
}

.site-header__title em {
  font-style: normal;
  color: var(--color-accent);
}

.ornament-line {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--sp-4);
  margin: var(--sp-3) auto;
  max-width: 320px;
}

.ornament-line::before,
.ornament-line::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--color-rule-dark);
}

.ornament-line__diamond {
  width: 6px;
  height: 6px;
  background: var(--color-accent);
  transform: rotate(45deg);
  flex-shrink: 0;
}

.site-header__subtitle {
  font-family: var(--font-sans);
  font-size: var(--text-xs);
  color: var(--color-ink-subtle);
  line-height: var(--leading-normal);
  max-width: 560px;
  margin: var(--sp-2) auto 0;
}

/* --- Main Content ---------------------------------------- */
main {
  flex: 1;
  min-height: 0;
  overflow: hidden;
  padding-bottom: 0;
}

main > .page-wrap {
  height: 100%;
  overflow: hidden;
}

/* --- Section Spacing ------------------------------------- */
.content-section {
  margin-top: var(--sp-4);
}

#form-section {
  height: 100%;
  overflow-y: auto;
  margin-top: var(--sp-3);
}

.section-label {
  font-family: var(--font-sans);
  font-size: var(--text-xs);
  font-weight: var(--weight-medium);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-ink-muted);
  margin-bottom: var(--sp-4);
  display: flex;
  align-items: center;
  gap: var(--sp-3);
}

.section-label::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--color-rule);
}

/* --- Footer ---------------------------------------------- */
.site-footer {
  border-top: 1px solid var(--color-rule);
  padding: var(--sp-3) 0;
  text-align: center;
  font-family: var(--font-sans);
  font-size: var(--text-xs);
  color: var(--color-ink-muted);
  letter-spacing: 0.05em;
  flex-shrink: 0;
}

/* --- Responsive ------------------------------------------ */
@media (max-width: 600px) {
  .site-header {
    padding: var(--sp-10) 0 var(--sp-8);
  }
}