:root {
  --canvas: #fffdf5;      /* warm paper white */
  --panel: #ffffff;
  --gold: #f5b400;        /* the dominant brand yellow */
  --gold-deep: #d69400;   /* pressed / detail */
  --gold-soft: #fff2c9;   /* tints, hovers */
  --green: #14332a;       /* deep chess-green from the emblem */
  --green-soft: #1d4a3c;  /* lifted green surfaces */
  --ink: #14332a;         /* text uses the brand green, not black */
  --ink-soft: #5c6b64;
  --line: #e3dcc4;        /* hairline rule on canvas */
  --rule: #d8cfa8;        /* stronger editorial rule */
  --green-ink: #14332a;         /* dark text sitting on gold */
  --paper-on-green: #fffdf5;    /* light text on the green panel */
  --paper-on-green-soft: #b7c9c0;
  --shadow: 0 18px 40px -24px rgba(20, 51, 42, 0.35);
  --shadow-soft: 0 10px 30px -20px rgba(20, 51, 42, 0.3);
  --nav-h: 72px;
}

:root.theme-night {
  --canvas: #0d1f19;
  --panel: #14332a;
  --gold: #f8bf1e;
  --gold-deep: #ffcb3d;
  --gold-soft: #23433a;
  --green: #0a1712;
  --green-soft: #1d4a3c;
  --ink: #fffdf5;
  --ink-soft: #9fb3a9;
  --line: #295044;
  --rule: #37624f;
  --shadow: 0 24px 50px -28px rgba(0, 0, 0, 0.6);
  --shadow-soft: 0 14px 34px -22px rgba(0, 0, 0, 0.5);
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--nav-h) + 32px);
  overflow-x: clip;
}

body {
  font-family: "Newsreader", Georgia, serif;
  background-color: var(--canvas);
  color: var(--ink);
  padding-top: calc(var(--nav-h) + 40px);
  min-height: 100vh;
  overflow-x: clip;
  -webkit-font-smoothing: antialiased;
  transition: background-color 0.3s, color 0.3s;
}

h1, h2, h3, h4, h5, h6 {
  font-family: "Fraunces", Georgia, serif;
  color: var(--ink);
  line-height: 1.05;
}

.skip-link {
  position: absolute;
  left: -999px;
  top: 8px;
  z-index: 2000;
  background: var(--ink);
  color: var(--gold);
  padding: 10px 18px;
  border-radius: 8px;
  font-weight: 700;
  text-decoration: none;
}
.skip-link:focus {
  left: 16px;
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: fixed;
  top: 20px;
  left: 4%;
  right: 4%;
  z-index: 1000;
  height: var(--nav-h);
  background-color: var(--panel);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 0 12px 0 18px;
  box-shadow: var(--shadow-soft);
  transition: background-color 0.3s, border-color 0.3s;
  animation: nav-drop 0.7s cubic-bezier(0.16, 1, 0.3, 1) both;
}

@keyframes nav-drop {
  from {
    opacity: 0;
    transform: translateY(-24px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (prefers-reduced-motion: reduce) {
  .nav-container {
    animation: none;
  }
  .img-container img {
    transition: none;
  }
}

.nav-first {
  display: flex;
  align-items: center;
  gap: 12px;
}

.img-container img {
  width: 40px;
  height: 40px;
  border-radius: 8px;
  border: 2px solid var(--ink);
  object-fit: cover;
  display: block;
  transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1), border-color 0.3s;
}

.nav-first:hover .img-container img {
  transform: rotate(-8deg) scale(1.08);
  border-color: var(--gold-deep);
}

@media (prefers-reduced-motion: reduce) {
  .nav-container {
    animation: none;
  }
}

.logo-title {
  font-size: 22px;
  font-weight: 600;
  font-family: "Fraunces", serif;
  letter-spacing: -0.01em;
}

.logo-title a {
  text-decoration: none;
  color: var(--ink);
}

.nav-end {
  display: flex;
  align-items: center;
  gap: 4px;
}

.nav-link {
  position: relative;
  text-decoration: none;
  color: var(--ink-soft);
  font-size: 14px;
  font-weight: 600;
  padding: 9px 14px;
  border-radius: 9px;
  transition: color 0.18s, background-color 0.18s;
}

.nav-link::after {
  content: "";
  position: absolute;
  left: 14px;
  right: 14px;
  bottom: 5px;
  height: 2px;
  border-radius: 2px;
  background-color: var(--gold-deep);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.28s cubic-bezier(0.16, 1, 0.3, 1);
}

.nav-link:hover {
  color: var(--ink);
}

.nav-link:hover::after {
  transform: scaleX(1);
}

.nav-cta {
  text-decoration: none;
  color: var(--green-ink);
  background-color: var(--gold);
  font-size: 14px;
  font-weight: 600;
  padding: 10px 20px;
  border-radius: 999px;
  border: 1px solid var(--gold-deep);
  margin-left: 8px;
  transition: transform 0.2s cubic-bezier(0.16, 1, 0.3, 1),
    box-shadow 0.2s, background-color 0.2s;
}

.nav-cta:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-soft);
  background-color: var(--gold-deep);
}

.theme-toggle {
  --tt-w: 58px;
  --tt-h: 30px;
  --tt-pad: 3px;
  --tt-thumb: calc(var(--tt-h) - var(--tt-pad) * 2);
  flex: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0;
  border: 0;
  background: none;
  cursor: pointer;
  border-radius: 999px;
  margin-left: 6px;
  line-height: 0;
}

.theme-toggle-track {
  position: relative;
  display: block;
  width: var(--tt-w);
  height: var(--tt-h);
  border-radius: 999px;
  background: linear-gradient(180deg, var(--gold-soft), #ffe6a0);
  border: 1px solid var(--gold-deep);
  box-shadow: inset 0 1px 3px rgba(20, 51, 42, 0.18);
  transition: background 0.4s, border-color 0.4s;
}

.theme-toggle-thumb {
  position: absolute;
  top: var(--tt-pad);
  left: var(--tt-pad);
  width: var(--tt-thumb);
  height: var(--tt-thumb);
  border-radius: 50%;
  background: var(--gold);
  box-shadow: 0 2px 5px rgba(20, 51, 42, 0.35);
  transition: transform 0.42s cubic-bezier(0.5, 1.4, 0.5, 1),
    background 0.4s;
}

.tt-sun,
.tt-moon {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  line-height: 1;
  transition: opacity 0.3s, transform 0.42s cubic-bezier(0.5, 1.4, 0.5, 1);
}
.tt-sun::before { content: "\2600"; }   /* ☀ */
.tt-moon::before { content: "\1F319"; } /* 🌙 */

.tt-moon {
  opacity: 0;
  transform: rotate(-60deg) scale(0.4);
}

.theme-toggle:hover .theme-toggle-thumb {
  filter: brightness(1.05);
}
.theme-toggle:active .theme-toggle-thumb {
  transform: scale(0.92);
}

:root.theme-night .theme-toggle-track {
  background: linear-gradient(180deg, #10261f, #1d4a3c);
  border-color: var(--rule);
}
:root.theme-night .theme-toggle-thumb {
  transform: translateX(calc(var(--tt-w) - var(--tt-thumb) - var(--tt-pad) * 2));
}
:root.theme-night .theme-toggle:active .theme-toggle-thumb {
  transform: translateX(calc(var(--tt-w) - var(--tt-thumb) - var(--tt-pad) * 2)) scale(0.92);
}
:root.theme-night .tt-sun {
  opacity: 0;
  transform: rotate(60deg) scale(0.4);
}
:root.theme-night .tt-moon {
  opacity: 1;
  transform: rotate(0) scale(1);
}

.nav-mobile-controls {
  display: none;
  align-items: center;
  gap: 10px;
}
.theme-toggle--mobile {
  margin-left: 0;
}

@media (prefers-reduced-motion: reduce) {
  .theme-toggle-thumb,
  .tt-sun,
  .tt-moon {
    transition: none;
  }
}

.nav-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border: 2px solid var(--ink);
  border-radius: 10px;
  background-color: var(--panel);
  cursor: pointer;
}

.nav-toggle-icon {
  width: 22px;
  height: 22px;
  filter: invert(0);
}
:root.theme-night .nav-toggle-icon {
  filter: invert(1);
}

:where(a, button):focus-visible {
  outline: 3px solid var(--gold-deep);
  outline-offset: 2px;
}

@media (max-width: 860px) {
  .nav-toggle {
    display: flex;
  }

  .nav-mobile-controls {
    display: flex;
  }

  .theme-toggle--desktop {
    display: none;
  }

  .nav-end {
    display: none;
    flex-direction: column;
    position: absolute;
    top: calc(var(--nav-h) + 10px);
    left: 0;
    right: 0;
    background-color: var(--panel);
    border: 2px solid var(--ink);
    border-radius: 16px;
    padding: 16px;
    gap: 6px;
    align-items: stretch;
    box-shadow: var(--shadow);
  }

  .nav-expanded .nav-end {
    display: flex;
  }

  .nav-link,
  .nav-cta {
    text-align: center;
    font-size: 16px;
    margin-left: 0;
  }
}