/* ============================================================
   SHARED NAV + MOBILE HAMBURGER
   ============================================================ */
:root {
  --nav-h: 68px;
}

.nav {
  position: fixed;
  inset: 0 0 auto 0;
  height: var(--nav-h);
  z-index: 100;
  display: flex;
  flex-direction: column;
  background: color-mix(in srgb, var(--paper) 86%, transparent);
  backdrop-filter: saturate(1.1) blur(10px);
  border-bottom: 1px solid var(--line);
}

.nav .wrap {
  display: flex;
  align-items: center;
  gap: 28px;
  width: 100%;
  height: var(--nav-h);
  flex: 0 0 var(--nav-h);
}

.brand {
  font-family: var(--font-display);
  font-weight: 800;
  letter-spacing: -.02em;
  font-size: 20px;
  text-decoration: none;
  margin-right: 6px;
  white-space: nowrap;
  color: var(--ink);
}

.nav-primary { display: flex; align-items: center; }

.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-links a {
  text-decoration: none;
  color: var(--ink-2);
  font-weight: 500;
  font-size: 15px;
  font-family: var(--font);
  padding: 8px 12px;
  border-radius: 8px;
  position: relative;
  transition: color .2s var(--ease), background .2s var(--ease);
}

.nav-links a:hover { color: var(--ink); background: var(--paper-2); }
.nav-links a[aria-current="page"],
.nav-links a[aria-current="true"] { color: var(--ink); font-weight: 700; }

.nav-links a[aria-current="page"]::after,
.nav-links a[aria-current="true"]::after {
  content: "";
  position: absolute;
  left: 12px;
  right: 12px;
  bottom: 2px;
  height: 2px;
  background: var(--accent);
  border-radius: 2px;
}

.nav-right {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

.btn-resume {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  text-decoration: none;
  font-family: var(--font);
  font-weight: 600;
  font-size: 15px;
  color: var(--ink);
  background: var(--card);
  border: 2px solid var(--ink);
  border-radius: 8px;
  padding: 9px 18px;
  white-space: nowrap;
  transition: background .25s var(--ease), color .25s var(--ease), border-color .25s var(--ease);
}

.btn-resume:hover { background: var(--ink); color: var(--paper); }
.btn-resume.is-lit { background: var(--accent); color: #fff; border-color: var(--accent); }
.btn-resume.is-lit:hover { background: var(--ink); border-color: var(--ink); }
.btn-resume.is-pulsing { animation: resumePulse .7s var(--ease); }

@keyframes resumePulse {
  0%   { transform: scale(1); }
  40%  { transform: scale(1.15); box-shadow: 0 0 0 6px var(--accent-soft); }
  100% { transform: scale(1); }
}

.icon-btn {
  width: 40px;
  height: 40px;
  flex: 0 0 auto;
  display: grid;
  place-items: center;
  border: 1.5px solid var(--line);
  border-radius: 8px;
  background: var(--card);
  color: var(--ink-2);
  text-decoration: none;
  transition: transform .2s var(--ease), border-color .2s var(--ease), color .2s var(--ease);
}

.icon-btn:hover { color: var(--ink); border-color: var(--ink); transform: translateY(-1px); }
.icon-btn svg { width: 18px; height: 18px; }

/* Page-level back link (work, sidequests, case study) */
.page-back {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font);
  font-weight: 600;
  font-size: 15px;
  color: var(--ink);
  text-decoration: none;
  padding: 9px 18px 9px 14px;
  border: 1.5px solid var(--line);
  border-radius: 999px;
  background: var(--card);
  white-space: nowrap;
  flex-shrink: 0;
  transition: background .2s var(--ease), color .2s var(--ease), border-color .2s var(--ease);
}

.page-back:hover { background: var(--ink); color: var(--paper); border-color: var(--ink); }
.page-back svg { width: 16px; height: 16px; flex-shrink: 0; }

.intro-head {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 8px;
}

.intro-head .section-label { margin-bottom: 0; flex: 1; min-width: min(100%, 220px); }

/* Hamburger toggle — hidden on desktop */
.nav-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  width: 52px;
  height: 52px;
  padding: 0;
  margin: 0;
  flex-shrink: 0;
  border: 2px solid var(--ink);
  border-radius: 10px;
  background: var(--card);
  color: var(--ink);
  cursor: pointer;
  transition: background .2s var(--ease), border-color .2s var(--ease);
}

.nav-toggle:hover { background: var(--paper-2); }

.nav-toggle-icon {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 6px;
  width: 24px;
}

.nav-toggle-bar {
  display: block;
  width: 100%;
  height: 3px;
  background: currentColor;
  border-radius: 2px;
  transition: transform .25s var(--ease), opacity .25s var(--ease);
}

.nav.is-open .nav-toggle-bar:nth-child(1) { transform: translateY(9px) rotate(45deg); }
.nav.is-open .nav-toggle-bar:nth-child(2) { opacity: 0; }
.nav.is-open .nav-toggle-bar:nth-child(3) { transform: translateY(-9px) rotate(-45deg); }

.nav-backdrop {
  position: fixed;
  inset: var(--nav-h) 0 0 0;
  background: oklch(0 0 0 / 0.45);
  opacity: 0;
  pointer-events: none;
  z-index: 140;
  transition: opacity .3s var(--ease);
}

.nav.is-open .nav-backdrop {
  opacity: 1;
  pointer-events: auto;
}

body.nav-menu-open { overflow: hidden; }

/* Tablet + phone */
@media (max-width: 1024px) {
  .nav-toggle { display: flex; }

  .nav .wrap { gap: 12px; }
  .brand { font-size: 18px; margin-right: 0; }
  .nav-right { gap: 8px; }
  .btn-resume { padding: 8px 14px; font-size: 14px; }
  .icon-btn { width: 38px; height: 38px; }

  .nav-primary {
    position: fixed;
    top: var(--nav-h);
    left: 0;
    right: 0;
    bottom: 0;
    width: auto;
    z-index: 150;
    display: block;
    padding: 24px 28px 40px;
    background: var(--paper);
    border-right: none;
    box-shadow: none;
    transform: translateX(-100%);
    transition: transform .3s var(--ease);
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
  }

  .nav.is-open .nav-primary { transform: translateX(0); }

  .nav-links {
    flex-direction: column;
    align-items: stretch;
    gap: 6px;
  }

  .nav-links a {
    display: block;
    padding: 18px 16px;
    font-size: 20px;
    font-weight: 600;
    line-height: 1.3;
    border-radius: 10px;
  }

  .nav-links a[aria-current="page"]::after,
  .nav-links a[aria-current="true"]::after {
    left: 0;
    right: auto;
    width: 4px;
    height: auto;
    top: 12px;
    bottom: 12px;
    border-radius: 0 2px 2px 0;
  }
}

@media (max-width: 420px) {
  .nav .wrap { gap: 8px; }
  .btn-resume { padding: 8px 10px; font-size: 13px; }
  .icon-btn { width: 36px; height: 36px; }
  .icon-btn svg { width: 16px; height: 16px; }
}

@media (prefers-reduced-motion: reduce) {
  .nav-primary,
  .nav-backdrop,
  .nav-toggle-bar { transition: none !important; }
}