/* =========================================================================
   emmahudelson.com — shared components
   Depends on /css/tokens.css. Cooperates with /js/nav.js:
     - #navToggle (button) + #navLinks (ul) markup contract
     - .reveal and .stagger visibility driven by IntersectionObserver
   ========================================================================= */

/* ==========================================================================
   LAYOUT PRIMITIVES
   ========================================================================== */
.page {
  max-width: var(--page-max);
  margin: 0 auto;
  padding-left: var(--page-gutter);
  padding-right: var(--page-gutter);
}

.measure {
  max-width: var(--measure);
  margin-left: auto;
  margin-right: auto;
}

.measure-wide {
  max-width: var(--measure-wide);
  margin-left: auto;
  margin-right: auto;
}

.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--s-8);
}

/* ==========================================================================
   TYPE UTILITIES
   ========================================================================== */
.display-xl {
  font-family: var(--font-display);
  font-size: var(--fs-display-xl);
  font-weight: 600;
  line-height: var(--lh-tight);
  letter-spacing: var(--tr-display);
  color: var(--fg);
  margin: 0;
}

.display-l {
  font-family: var(--font-display);
  font-size: var(--fs-display-l);
  font-weight: 600;
  line-height: 1.05;
  letter-spacing: var(--tr-display);
  color: var(--fg);
  margin: 0;
}

.display-m {
  font-family: var(--font-display);
  font-size: var(--fs-display-m);
  font-weight: 600;
  line-height: 1.1;
  letter-spacing: var(--tr-display);
  color: var(--fg);
  margin: 0;
}

/* Small-caps label — DM Mono, uppercase, wide-tracked. Used as eyebrow/meta. */
.eyebrow,
.meta,
.section-label {
  font-family: var(--font-sans);
  font-size: var(--fs-meta);
  font-weight: 500;
  letter-spacing: var(--tr-label);
  text-transform: uppercase;
  color: var(--fg-mute);
  display: inline-block;
  margin: 0 0 var(--s-4);
}

.eyebrow.accent,
.meta.accent {
  color: var(--accent-deep);
}

.section-title {
  font-family: var(--font-display);
  font-size: var(--fs-h2);
  font-weight: 600;
  line-height: 1.15;
  letter-spacing: var(--tr-display);
  margin: 0 0 var(--s-5);
}

/* Interior page masthead */
.page-head {
  padding-top: var(--s-9);
  padding-bottom: var(--s-7);
  border-bottom: 1px solid var(--rule);
  margin-bottom: var(--s-8);
}

.page-title {
  font-family: var(--font-display);
  font-size: var(--fs-display-l);
  font-weight: 600;
  line-height: 1.02;
  letter-spacing: var(--tr-display);
  margin: 0 0 var(--s-5);
}

.page-lede {
  font-family: var(--font-serif);
  font-size: var(--fs-lead);
  font-style: italic;
  font-weight: 400;
  color: var(--fg-2);
  line-height: 1.5;
  max-width: var(--measure);
  margin: 0;
}

/* ==========================================================================
   WORDMARK
   The single most important element. Responsive-by-design.
     - xl: "Emma Hudelson" on one generous line; breathing letter-spacing
     - md: slightly tighter
     - sm (mobile): stacks to two lines (Emma / Hudelson), weight lightens,
       tracking tightens, optical size adjusts for smaller display.
   Uses Manrope at heavy display weight; tracking and weight shift across breakpoints.
   ========================================================================== */
.wordmark {
  font-family: var(--font-display);
  font-size: var(--fs-display-xl);
  font-weight: 700;
  line-height: 0.92;
  letter-spacing: var(--tr-wordmark);
  color: var(--fg);
  margin: 0;
  /* allow it to break naturally on narrow screens */
  word-spacing: 0.02em;
  text-wrap: balance;
}

/* Honor an explicit break between given + surname when author desires */
.wordmark .break { display: inline; }

@media (min-width: 1200px) {
  .wordmark {
    /* widest screens: tight tracking, slightly relaxed weight; type breathes via size */
    letter-spacing: -0.03em;
    font-weight: 650;
  }
}

@media (max-width: 900px) {
  .wordmark {
    font-size: clamp(3rem, 14vw, 5.5rem);
    letter-spacing: -0.02em;
    line-height: 0.95;
    font-weight: 700;
  }
  .wordmark .break { display: block; }
}

@media (max-width: 520px) {
  .wordmark {
    font-size: clamp(2.75rem, 17vw, 4.25rem);
    letter-spacing: -0.015em;
    font-weight: 750;
  }
}

/* Nav-brand is a condensed, smaller variant of the wordmark */
.nav-brand {
  font-family: var(--font-display);
  font-size: 1.125rem;
  font-weight: 700;
  letter-spacing: -0.015em;
  line-height: 1;
  color: var(--fg);
  text-decoration: none;
  white-space: nowrap;
  transition: color var(--dur) var(--ease);
}
.nav-brand:hover,
.nav-brand:focus-visible {
  color: var(--accent-deep);
  text-decoration: none;
}

/* ==========================================================================
   NAV — solid paper, sticky. No hamburger at desktop.
   ========================================================================== */
.site-nav {
  position: sticky;
  top: 0;
  z-index: 40;
  background: var(--paper);
  border-bottom: 1px solid var(--rule);
  height: var(--nav-h);
  display: flex;
  align-items: center;
}

.site-nav .page {
  width: 100%;
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--s-5);
}

.nav-links {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  align-items: baseline;
  gap: clamp(var(--s-4), 2.2vw, var(--s-6));
}

.nav-link {
  font-family: var(--font-sans);
  font-size: var(--fs-meta);
  font-weight: 500;
  letter-spacing: var(--tr-label);
  text-transform: uppercase;
  color: var(--fg);
  text-decoration: none;
  padding: 0;
  line-height: 1;
  position: relative;
  transition: color var(--dur) var(--ease);
}
.nav-link::after {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  bottom: -6px;
  height: 1px;
  background: currentColor;
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform var(--dur) var(--ease);
}
.nav-link:hover,
.nav-link:focus-visible {
  color: var(--accent-deep);
  text-decoration: none;
}
.nav-link:hover::after,
.nav-link:focus-visible::after,
.nav-link.active::after {
  transform: scaleX(1);
}
.nav-link.active {
  color: var(--accent-deep);
}

/* Mobile toggle — three bars animating into an X */
.nav-toggle {
  display: none;
  width: 32px;
  height: 24px;
  position: relative;
  align-self: center;
}
.nav-toggle span {
  position: absolute;
  left: 0;
  right: 0;
  height: 1px;
  background: var(--fg);
  transition: transform var(--dur) var(--ease),
              opacity var(--dur) var(--ease),
              top var(--dur) var(--ease);
}
.nav-toggle span:nth-child(1) { top: 4px; }
.nav-toggle span:nth-child(2) { top: 12px; }
.nav-toggle span:nth-child(3) { top: 20px; }
.nav-toggle.open span:nth-child(1) { top: 12px; transform: rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { top: 12px; transform: rotate(-45deg); }

@media (max-width: 900px) {
  .nav-toggle { display: block; }

  .nav-links {
    position: fixed;
    top: var(--nav-h);
    left: 0;
    right: 0;
    background: var(--paper);
    border-bottom: 1px solid var(--rule);
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    padding: var(--s-5) var(--page-gutter) var(--s-7);
    transform: translateY(-110%);
    opacity: 0;
    pointer-events: none;
    transition: transform var(--dur-slow) var(--ease),
                opacity var(--dur) var(--ease);
  }
  .nav-links.open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }
  .nav-links li {
    width: 100%;
    border-top: 1px solid var(--rule);
  }
  .nav-links li:last-child { border-bottom: 1px solid var(--rule); }

  .nav-link {
    display: block;
    padding: var(--s-4) 0;
    font-size: 0.8125rem;
  }
  .nav-link::after { display: none; }
}

/* ==========================================================================
   FOOTER — three-column grid. Mobile: single column stack.
   ========================================================================== */
.site-footer {
  margin-top: var(--s-10);
  padding: var(--s-8) 0 var(--s-7);
  border-top: 1px solid var(--rule);
  background: var(--paper);
  color: var(--fg-2);
}

.site-footer .page {
  display: grid;
  grid-template-columns: 1.3fr 1fr 1fr;
  gap: var(--s-7);
  align-items: start;
}

.footer-col {
  display: flex;
  flex-direction: column;
  gap: var(--s-3);
}

.footer-brand {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 650;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--fg);
  text-decoration: none;
}
.footer-brand:hover { color: var(--accent-deep); text-decoration: none; }

.footer-meta {
  font-family: var(--font-sans);
  font-size: var(--fs-meta);
  font-weight: 400;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--fg-mute);
  margin-top: var(--s-3);
}

.footer-label {
  font-family: var(--font-sans);
  font-size: var(--fs-meta);
  font-weight: 500;
  letter-spacing: var(--tr-label);
  text-transform: uppercase;
  color: var(--fg-mute);
  margin-bottom: var(--s-2);
}

.footer-link {
  font-family: var(--font-serif);
  font-size: var(--fs-body-sm);
  font-style: italic;
  color: var(--fg);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  width: max-content;
  transition: color var(--dur) var(--ease),
              border-color var(--dur) var(--ease);
}
.footer-link:hover,
.footer-link:focus-visible {
  color: var(--accent-deep);
  border-bottom-color: var(--accent-deep);
  text-decoration: none;
}

/* Asterism inside footer: tighter margin, smaller size, left-aligned */
.site-footer .asterism {
  margin: 0 0 var(--s-2);
  text-align: left;
  font-size: 1rem;
}

@media (max-width: 900px) {
  .site-footer .page {
    grid-template-columns: 1fr;
    gap: var(--s-6);
  }
}

/* ==========================================================================
   PRIMITIVES — button, text-button, CTA row
   ========================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-sans);
  font-size: var(--fs-meta);
  font-weight: 500;
  letter-spacing: var(--tr-label);
  text-transform: uppercase;
  color: var(--ink);
  background: transparent;
  padding: 0.875rem 1.375rem;
  border: 1px solid var(--ink);
  text-decoration: none;
  cursor: pointer;
  transition: background-color var(--dur) var(--ease),
              color var(--dur) var(--ease),
              border-color var(--dur) var(--ease);
}
.btn:hover,
.btn:focus-visible {
  background: var(--ink);
  color: var(--paper);
  text-decoration: none;
}

.btn-text {
  display: inline-flex;
  align-items: baseline;
  gap: 0.4em;
  font-family: var(--font-display);
  font-style: italic;
  font-weight: 500;
  font-size: var(--fs-lead);
  color: var(--accent-deep);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  letter-spacing: -0.005em;
  transition: color var(--dur) var(--ease),
              border-color var(--dur) var(--ease),
              gap var(--dur) var(--ease);
}
.btn-text::after {
  content: '\2192'; /* → */
  font-style: normal;
  font-family: var(--font-serif);
  transition: transform var(--dur) var(--ease);
  display: inline-block;
}
.btn-text:hover,
.btn-text:focus-visible {
  color: var(--ink);
  border-bottom-color: var(--ink);
  text-decoration: none;
}
.btn-text:hover::after,
.btn-text:focus-visible::after {
  transform: translateX(3px);
}

.cta-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--s-5) var(--s-6);
  margin: var(--s-6) 0;
}

/* ==========================================================================
   FORMS — underline-only
   ========================================================================== */
.field {
  display: flex;
  flex-direction: column;
  gap: var(--s-2);
  margin-bottom: var(--s-5);
}
.field label {
  font-family: var(--font-sans);
  font-size: var(--fs-meta);
  font-weight: 500;
  letter-spacing: var(--tr-label);
  text-transform: uppercase;
  color: var(--fg-mute);
}
.field input,
.field textarea {
  font-family: var(--font-serif);
  font-size: var(--fs-body);
  line-height: 1.5;
  color: var(--fg);
  background: transparent;
  border: 0;
  border-bottom: 1px solid var(--rule);
  padding: 0.5rem 0;
  outline: none;
  transition: border-color var(--dur) var(--ease);
}
.field input:focus,
.field textarea:focus {
  border-bottom-color: var(--accent-deep);
  border-bottom-width: 2px;
  padding-bottom: calc(0.5rem - 1px);
}
.field textarea { resize: vertical; min-height: 8rem; }

/* ==========================================================================
   DIVIDERS & ORNAMENTS
   ========================================================================== */
.rule {
  border: 0;
  border-top: 1px solid var(--rule);
  margin: var(--s-7) 0;
}

.asterism {
  display: block;
  text-align: center;
  font-family: var(--font-serif);
  font-size: 1.25rem;
  color: var(--fg-mute);
  letter-spacing: 0.4em;
  margin: var(--s-8) 0;
  user-select: none;
}
.asterism::before { content: '\2042'; } /* ⁂ */

/* ==========================================================================
   MOTION — scroll reveal + stagger. Triggered by js/nav.js IntersectionObserver
   which adds .visible to elements with .reveal or .stagger.
   ========================================================================== */
.reveal {
  opacity: 0;
  transform: translateY(6px);
  transition: opacity var(--dur-slow) var(--ease),
              transform var(--dur-slow) var(--ease);
  will-change: opacity, transform;
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

.stagger > * {
  opacity: 0;
  transform: translateY(6px);
  transition: opacity var(--dur-slow) var(--ease),
              transform var(--dur-slow) var(--ease);
}
.stagger.visible > * { opacity: 1; transform: translateY(0); }
.stagger.visible > *:nth-child(1) { transition-delay: 0ms; }
.stagger.visible > *:nth-child(2) { transition-delay: 80ms; }
.stagger.visible > *:nth-child(3) { transition-delay: 160ms; }
.stagger.visible > *:nth-child(4) { transition-delay: 240ms; }
.stagger.visible > *:nth-child(5) { transition-delay: 320ms; }
.stagger.visible > *:nth-child(6) { transition-delay: 400ms; }
.stagger.visible > *:nth-child(7) { transition-delay: 480ms; }
.stagger.visible > *:nth-child(8) { transition-delay: 560ms; }

@media (prefers-reduced-motion: reduce) {
  .reveal, .stagger > * { opacity: 1; transform: none; transition: none; }
}

/* ==========================================================================
   RESPONSIVE — shared layout primitives mobile counterparts
   ========================================================================== */
@media (max-width: 900px) {
  .two-col {
    grid-template-columns: 1fr;
    gap: var(--s-6);
  }
  .page-head {
    padding-top: var(--s-7);
    padding-bottom: var(--s-5);
    margin-bottom: var(--s-6);
  }
}