/* ============================================================
   Campus Theme — Main Stylesheet
   Font: Nunito (Google Fonts) — rounded, accessible
   Colors: deep purple + warm dark blue + grey
   ============================================================ */

/* ────────────────────────────────────────────────────────────
   1. CSS CUSTOM PROPERTIES
──────────────────────────────────────────────────────────── */
:root {
  /* Brand */
  --clr-purple:        #4B2D9F;
  --clr-purple-dark:   #2E1A70;
  --clr-purple-mid:    #6045B8;
  --clr-purple-light:  #8B6DD4;
  --clr-blue:          #1C3A6B;
  --clr-blue-mid:      #2A5499;
  --clr-accent:        #D4743A;  /* warm amber */
  --clr-accent-hover:  #B85E28;

  /* Surface — Light Mode */
  --bg-base:           #F6F5FC;
  --bg-surface:        #FFFFFF;
  --bg-elevated:       #EDE9F8;
  --bg-header:         #2E1A70;
  --bg-footer:         #1A102E;

  /* Text — Light Mode */
  --txt-primary:       #18122E;
  --txt-secondary:     #453A66;
  --txt-muted:         #7868A6;
  --txt-on-dark:       #ECEAF8;
  --txt-on-dark-muted: #C0B8E8;

  /* Borders */
  --border:            #DAD4F0;
  --border-strong:     #B0A5D8;

  /* Focus ring (high visibility) */
  --focus-ring:        #D4743A;
  --focus-ring-width:  3px;

  /* Status */
  --clr-success:       #1F6B3A;
  --clr-error:         #B52A2A;

  /* Typography */
  --font-base:   'Nunito', Verdana, Arial, sans-serif;
  --font-mono:   'Courier New', Courier, monospace;

  --fz-xs:    0.8125rem;   /* 13px */
  --fz-sm:    0.9375rem;   /* 15px */
  --fz-base:  1.0625rem;   /* 17px — slightly larger for readability */
  --fz-md:    1.1875rem;   /* 19px */
  --fz-lg:    1.375rem;    /* 22px */
  --fz-xl:    1.625rem;    /* 26px */
  --fz-2xl:   2rem;        /* 32px */
  --fz-3xl:   2.625rem;    /* 42px */
  --fz-4xl:   3.375rem;    /* 54px */

  --lh-tight:  1.25;
  --lh-snug:   1.4;
  --lh-base:   1.65;       /* comfortable for low-vision */
  --lh-loose:  1.85;

  /* Spacing */
  --sp-1:   0.25rem;
  --sp-2:   0.5rem;
  --sp-3:   0.75rem;
  --sp-4:   1rem;
  --sp-6:   1.5rem;
  --sp-8:   2rem;
  --sp-10:  2.5rem;
  --sp-12:  3rem;
  --sp-16:  4rem;
  --sp-20:  5rem;
  --sp-24:  6rem;

  /* Layout */
  --max-content: 760px;
  --max-wide:    1200px;
  --sidebar:     280px;

  /* Borders */
  --radius-sm:  6px;
  --radius:     10px;
  --radius-lg:  16px;
  --radius-xl:  24px;

  /* Shadows */
  --shadow-sm:  0 1px 3px rgba(75, 45, 159, 0.08);
  --shadow:     0 4px 16px rgba(75, 45, 159, 0.12);
  --shadow-lg:  0 8px 32px rgba(75, 45, 159, 0.18);
  --shadow-up:  0 -4px 20px rgba(75, 45, 159, 0.10);

  /* Transitions */
  --transition: 200ms ease;
  --transition-slow: 350ms ease;
}

/* ────────────────────────────────────────────────────────────
   2. REDUCED MOTION
──────────────────────────────────────────────────────────── */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* ────────────────────────────────────────────────────────────
   3. RESET & BASE
──────────────────────────────────────────────────────────── */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

body {
  font-family: var(--font-base);
  font-size: var(--fz-base);
  line-height: var(--lh-base);
  color: var(--txt-primary);
  background-color: var(--bg-base);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img, video, svg {
  display: block;
  max-width: 100%;
  height: auto;
}

ul, ol {
  list-style: none;
}

a {
  color: var(--clr-purple);
  text-decoration: underline;
  text-decoration-thickness: 2px;
  text-underline-offset: 3px;
  transition: color var(--transition), text-decoration-color var(--transition);
}

a:hover {
  color: var(--clr-purple-dark);
}

/* ────────────────────────────────────────────────────────────
   4. SKIP LINKS
──────────────────────────────────────────────────────────── */
.skip-link {
  position: absolute;
  left: -9999px;
  top: auto;
  width: 1px;
  height: 1px;
  overflow: hidden;
  z-index: 9999;
  font-size: var(--fz-sm);
  font-weight: 700;
  color: var(--txt-on-dark);
  background: var(--clr-purple-dark);
  padding: var(--sp-3) var(--sp-6);
  border-radius: 0 0 var(--radius) var(--radius);
  text-decoration: none;
}

.skip-link:focus {
  left: var(--sp-4);
  width: auto;
  height: auto;
  outline: var(--focus-ring-width) solid var(--focus-ring);
  outline-offset: 2px;
}

/* ────────────────────────────────────────────────────────────
   5. FOCUS INDICATORS (WCAG 2.1 AA)
──────────────────────────────────────────────────────────── */
:focus-visible {
  outline: var(--focus-ring-width) solid var(--focus-ring);
  outline-offset: 3px;
  border-radius: 4px;
}

:focus:not(:focus-visible) {
  outline: none;
}

/* ────────────────────────────────────────────────────────────
   6. LAYOUT
──────────────────────────────────────────────────────────── */
.site-wrapper {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

.site-main {
  flex: 1;
  padding-bottom: var(--sp-16);
}

.container {
  width: 100%;
  max-width: var(--max-wide);
  margin-inline: auto;
  padding-inline: var(--sp-6);
}

/* Two-column layout: content + sidebar */
.page-layout {
  display: grid;
  grid-template-columns: 1fr var(--sidebar);
  gap: var(--sp-12);
  padding-top: var(--sp-8);
}

.page-layout--full {
  grid-template-columns: 1fr;
  max-width: var(--max-content);
}

@media (max-width: 900px) {
  .page-layout {
    grid-template-columns: 1fr;
  }
}

/* ────────────────────────────────────────────────────────────
   7. HEADER
──────────────────────────────────────────────────────────── */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--bg-header);
  border-bottom: 3px solid var(--clr-purple-mid);
  box-shadow: var(--shadow-lg);
}

.site-header__inner {
  display: flex;
  align-items: center;
  gap: var(--sp-6);
  min-height: 64px;
}

/* Brand */
.site-header__brand {
  flex-shrink: 0;
}

.site-header__title-link {
  font-size: var(--fz-lg);
  font-weight: 800;
  color: var(--txt-on-dark);
  text-decoration: none;
  letter-spacing: -0.02em;
}

.site-header__title-link:hover {
  color: var(--txt-on-dark-muted);
}

/* ────────────────────────────────────────────────────────────
   8. NAVIGATION
──────────────────────────────────────────────────────────── */
.site-nav {
  flex: 1;
  display: flex;
  justify-content: flex-end;
}

.site-nav__menu {
  display: flex;
  align-items: center;
  gap: var(--sp-1);
  list-style: none;
}

.site-nav__menu a {
  display: block;
  padding: var(--sp-2) var(--sp-3);
  font-size: var(--fz-sm);
  font-weight: 600;
  color: var(--txt-on-dark-muted);
  text-decoration: none;
  border-radius: var(--radius-sm);
  transition: color var(--transition), background var(--transition);
}

.site-nav__menu a:hover,
.site-nav__menu .current-menu-item > a {
  color: var(--txt-on-dark);
  background: rgba(255, 255, 255, 0.1);
}

/* Sub-menus */
.site-nav__menu .menu-item-has-children {
  position: relative;
}

.site-nav__menu .sub-menu {
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 200px;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  padding: var(--sp-2);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-6px);
  transition: opacity var(--transition), transform var(--transition), visibility var(--transition);
  z-index: 200;
}

.site-nav__menu .menu-item-has-children:hover > .sub-menu,
.site-nav__menu .menu-item-has-children:focus-within > .sub-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.site-nav__menu .sub-menu a {
  color: var(--txt-secondary);
  width: 100%;
}

.site-nav__menu .sub-menu a:hover {
  color: var(--clr-purple);
  background: var(--bg-elevated);
}

/* Hamburger toggle */
.site-nav__toggle {
  display: none;
  flex-direction: column;
  justify-content: space-between;
  width: 40px;
  height: 28px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
}

.site-nav__toggle-bar {
  display: block;
  width: 100%;
  height: 3px;
  background: var(--txt-on-dark);
  border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition);
}

@media (max-width: 768px) {
  .site-nav__toggle {
    display: flex;
  }

  .site-nav__menu {
    position: absolute;
    top: 67px;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: var(--bg-header);
    border-bottom: 3px solid var(--clr-purple-mid);
    padding: var(--sp-4);
    display: none;
  }

  .site-nav__menu.is-open {
    display: flex;
  }

  .site-nav__menu a {
    font-size: var(--fz-base);
    padding: var(--sp-3) var(--sp-4);
  }

  .site-nav__menu .sub-menu {
    position: static;
    opacity: 1;
    visibility: visible;
    transform: none;
    background: rgba(0, 0, 0, 0.2);
    border: none;
    box-shadow: none;
    border-radius: 0;
  }
}

/* ────────────────────────────────────────────────────────────
   10. ACCESSIBILITY TOOLBAR — Floating FAB (bottom-right)
──────────────────────────────────────────────────────────── */
.accessibility-toolbar {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  z-index: 9999;
  font-size: var(--fz-sm);
}

/* FAB trigger bar */
.a11y-toolbar-bar {
  display: flex;
  justify-content: flex-end;
}

/* Round FAB button */
.a11y-toggle-btn {
  width: 52px;
  height: 52px;
  min-width: 52px;
  min-height: 52px;
  padding: 0;
  border-radius: 50%;
  background: var(--clr-purple);
  color: #fff;
  border: none;
  box-shadow: 0 4px 16px rgba(0, 0, 0, .28);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: background var(--transition), box-shadow var(--transition);
  line-height: 1;
}

.a11y-toggle-btn:hover {
  background: var(--clr-purple-dark);
  box-shadow: 0 6px 22px rgba(0, 0, 0, .35);
}

.a11y-toggle-btn:focus-visible {
  outline: 3px solid var(--clr-accent);
  outline-offset: 3px;
}

/* Floating panel — sits above the FAB, collapsed by default */
.a11y-panel {
  position: absolute;
  bottom: calc(100% + 0.625rem);
  right: 0;
  width: max-content;
  max-width: min(90vw, 200px);
  background: var(--bg-surface);
  border-radius: var(--radius);
  box-shadow: 0 8px 32px rgba(0, 0, 0, .18);
  border: 1px solid var(--border);
  overflow: hidden;
  max-height: 0;
  opacity: 0;
  pointer-events: none;
  transition: max-height .25s ease, opacity .2s ease;
}

.accessibility-toolbar.is-open .a11y-panel {
  max-height: 600px;
  opacity: 1;
  pointer-events: auto;
}

/* Controls layout inside panel */
.accessibility-toolbar .toolbar-inner {
  display: flex;
  flex-direction: column;
  gap: 0;
  padding: .5rem;
}

.accessibility-toolbar .toolbar-group {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: .25rem;
  padding: .375rem 0;
}

.accessibility-toolbar .toolbar-group + .toolbar-group {
  border-top: 1px solid var(--border);
}

/* Icon control buttons — 44×44 squares */
.a11y-btn {
  width: 44px;
  height: 44px;
  min-width: 44px;
  min-height: 44px;
  padding: 0;
  border: 2px solid var(--clr-purple);
  background: transparent;
  color: var(--clr-purple);
  cursor: pointer;
  border-radius: var(--radius-sm);
  font-family: var(--font-base);
  font-weight: 700;
  font-size: .8rem;
  transition: background var(--transition), color var(--transition), border-color var(--transition);
  display: flex;
  align-items: center;
  justify-content: center;
  line-height: 1;
}

.a11y-btn--font-lg { font-size: .95rem; }
.a11y-btn--font-xl { font-size: 1.05rem; }

.a11y-btn:hover,
.a11y-btn.active {
  background: var(--clr-purple);
  color: #fff;
}

.a11y-btn:focus-visible {
  outline: 3px solid var(--clr-accent);
  outline-offset: 2px;
}

/* Dark mode overrides for FAB */
[data-theme="dark"] .a11y-toggle-btn {
  background: var(--clr-purple-mid);
  box-shadow: 0 4px 16px rgba(0, 0, 0, .5);
}

[data-theme="dark"] .a11y-toggle-btn:hover {
  background: var(--clr-purple);
}

[data-theme="dark"] .a11y-btn {
  border-color: var(--clr-purple-light);
  color: var(--clr-purple-light);
}

[data-theme="dark"] .a11y-btn:hover,
[data-theme="dark"] .a11y-btn.active {
  background: var(--clr-purple);
  color: #fff;
  border-color: var(--clr-purple);
}

/* ────────────────────────────────────────────────────────────
   11. HERO SECTION
──────────────────────────────────────────────────────────── */
.hero {
  position: relative;
  overflow: hidden;
  background: linear-gradient(135deg, var(--clr-purple-dark) 0%, var(--clr-blue) 100%);
  padding: var(--sp-20) 0;
  min-height: 560px;
  display: flex;
  align-items: center;
}

/* Geometric background decoration */
.hero__bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 70% 60% at 80% 50%, rgba(96, 69, 184, 0.4) 0%, transparent 70%),
    radial-gradient(ellipse 40% 40% at 10% 80%, rgba(28, 58, 107, 0.6) 0%, transparent 60%);
  pointer-events: none;
}

/* Subtle dot grid overlay */
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: radial-gradient(rgba(255,255,255,0.07) 1px, transparent 1px);
  background-size: 28px 28px;
  pointer-events: none;
}

.hero__inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--sp-12);
  align-items: center;
}

@media (max-width: 900px) {
  .hero__inner {
    grid-template-columns: 1fr;
  }
  .hero__visual { display: none; }
}

.hero__eyebrow {
  font-size: var(--fz-sm);
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--clr-purple-light);
  margin-bottom: var(--sp-4);
}

.hero__heading {
  font-size: clamp(var(--fz-2xl), 5vw, var(--fz-4xl));
  font-weight: 800;
  line-height: var(--lh-tight);
  color: #FFFFFF;
  letter-spacing: -0.03em;
  margin-bottom: var(--sp-6);
}

.hero__subheading {
  font-size: var(--fz-md);
  line-height: var(--lh-loose);
  color: var(--txt-on-dark-muted);
  max-width: 520px;
  margin-bottom: var(--sp-10);
}

.hero__actions {
  display: flex;
  gap: var(--sp-4);
  flex-wrap: wrap;
}

/* ── Code block decoration ── */
.hero__visual {
  display: flex;
  justify-content: center;
}

.hero__code-block {
  background: rgba(0, 0, 0, 0.4);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-lg);
  padding: var(--sp-6) var(--sp-8);
  font-family: var(--font-mono);
  font-size: var(--fz-sm);
  line-height: 1.9;
  backdrop-filter: blur(8px);
  width: 100%;
  max-width: 380px;
}

.hero__code-line {
  display: block;
  color: #C8C2E8;
  white-space: pre;
}

.tok-kw   { color: #B48CF4; }
.tok-fn   { color: #7EC8E3; }
.tok-str  { color: #A8E6A3; }
.tok-bool { color: #F4A261; }

/* ────────────────────────────────────────────────────────────
   12. SECTIONS
──────────────────────────────────────────────────────────── */
.section {
  padding: var(--sp-20) 0;
}

.section__header {
  text-align: center;
  margin-bottom: var(--sp-12);
}

.section__title {
  font-size: var(--fz-2xl);
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--txt-primary);
  margin-bottom: var(--sp-3);
}

.section__subtitle {
  font-size: var(--fz-md);
  color: var(--txt-muted);
  max-width: 540px;
  margin-inline: auto;
  line-height: var(--lh-loose);
}

.section__cta {
  text-align: center;
  margin-top: var(--sp-10);
}

/* ────────────────────────────────────────────────────────────
   13. POST CARD GRID
──────────────────────────────────────────────────────────── */
.post-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(300px, 100%), 1fr));
  gap: var(--sp-8);
  list-style: none;
}

/* Equal-height cards: make the <li> a flex column so .post-card fills it */
.post-grid > li {
  display: flex;
  flex-direction: column;
}

.post-card {
  display: flex;
  flex-direction: column;
  flex: 1;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition), transform var(--transition), border-color var(--transition);
}

.post-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-3px);
  border-color: var(--clr-purple-light);
}

.post-card__image-link {
  display: block;
  width: 100%;
  aspect-ratio: 5 / 3;
  overflow: hidden;
  flex-shrink: 0;
}

.post-card__image {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  transition: transform var(--transition-slow);
}

.post-card:hover .post-card__image {
  transform: scale(1.04);
}

.post-card__body {
  display: flex;
  flex-direction: column;
  flex: 1;
  padding: var(--sp-6);
  gap: var(--sp-3);
}

.post-card__meta {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  flex-wrap: wrap;
}

.post-card__category {
  display: inline-block;
  padding: var(--sp-1) var(--sp-3);
  font-size: var(--fz-xs);
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--clr-purple);
  background: var(--bg-elevated);
  border-radius: 100px;
  text-decoration: none;
  transition: background var(--transition), color var(--transition);
}

.post-card__category:hover {
  background: var(--clr-purple);
  color: #FFFFFF;
}

.post-card__date {
  font-size: var(--fz-xs);
  color: var(--txt-muted);
}

.post-card__title {
  font-size: var(--fz-lg);
  font-weight: 700;
  line-height: var(--lh-snug);
  letter-spacing: -0.01em;
}

.post-card__title-link {
  color: var(--txt-primary);
  text-decoration: none;
  transition: color var(--transition);
}

.post-card__title-link:hover {
  color: var(--clr-purple);
}

.post-card__excerpt {
  font-size: var(--fz-sm);
  color: var(--txt-secondary);
  line-height: var(--lh-loose);
  flex: 1;
}

.post-card__read-more {
  align-self: flex-start;
  margin-top: auto;
}

/* ────────────────────────────────────────────────────────────
   14. FEATURES SECTION
──────────────────────────────────────────────────────────── */
.features {
  background: var(--bg-elevated);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.features__grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(280px, 100%), 1fr));
  gap: var(--sp-6);
  list-style: none;
}

.feature-item {
  display: flex;
  flex-direction: column;
  gap: var(--sp-3);
  padding: var(--sp-8) var(--sp-6);
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition), border-color var(--transition), transform var(--transition);
}

.feature-item:hover {
  box-shadow: var(--shadow);
  border-color: var(--clr-purple-light);
  transform: translateY(-2px);
}

.feature-item__icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 52px;
  height: 52px;
  background: var(--bg-elevated);
  border-radius: var(--radius);
  font-size: 1.6rem;
  line-height: 1;
  flex-shrink: 0;
  border: 1px solid var(--border);
}

.feature-item__title {
  font-size: var(--fz-md);
  font-weight: 700;
  color: var(--txt-primary);
  letter-spacing: -0.01em;
}

.feature-item__desc {
  font-size: var(--fz-sm);
  color: var(--txt-secondary);
  line-height: var(--lh-loose);
  flex: 1;
}

/* ────────────────────────────────────────────────────────────
   15. ABOUT SECTION
──────────────────────────────────────────────────────────── */
.about {
  background: var(--bg-elevated);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.about__inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--sp-16);
  align-items: center;
}

@media (max-width: 760px) {
  .about__inner {
    grid-template-columns: 1fr;
  }
}

.about__text {
  font-size: var(--fz-md);
  color: var(--txt-secondary);
  line-height: var(--lh-loose);
  margin-bottom: var(--sp-8);
}

.about__text p + p {
  margin-top: var(--sp-4);
}

.about__stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--sp-6);
}

@media (max-width: 480px) {
  .about__stats {
    grid-template-columns: 1fr 1fr;
  }
}

.stat {
  text-align: center;
  padding: var(--sp-6);
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
}

.stat__number {
  display: block;
  font-size: var(--fz-2xl);
  font-weight: 800;
  color: var(--clr-purple);
  letter-spacing: -0.03em;
  margin-bottom: var(--sp-1);
}

.stat__label {
  font-size: var(--fz-xs);
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--txt-muted);
}

/* ────────────────────────────────────────────────────────────
   15. CONTACT CTA BANNER
──────────────────────────────────────────────────────────── */
.contact-cta {
  background: linear-gradient(135deg, var(--clr-purple) 0%, var(--clr-blue) 100%);
  padding: var(--sp-16) 0;
}

.contact-cta__inner {
  text-align: center;
}

.contact-cta__title {
  font-size: var(--fz-2xl);
  font-weight: 800;
  color: #FFFFFF;
  letter-spacing: -0.02em;
  margin-bottom: var(--sp-4);
}

.contact-cta__text {
  font-size: var(--fz-md);
  color: var(--txt-on-dark-muted);
  max-width: 500px;
  margin-inline: auto;
  margin-bottom: var(--sp-8);
  line-height: var(--lh-loose);
}

/* ────────────────────────────────────────────────────────────
   16. BUTTONS
──────────────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--sp-3) var(--sp-6);
  font-family: var(--font-base);
  font-size: var(--fz-sm);
  font-weight: 700;
  line-height: 1.2;
  border-radius: var(--radius);
  border: 2px solid transparent;
  cursor: pointer;
  text-decoration: none;
  transition:
    background var(--transition),
    color var(--transition),
    border-color var(--transition),
    box-shadow var(--transition),
    transform var(--transition);
  min-height: 44px;  /* touch target */
}

.btn:active {
  transform: scale(0.97);
}

.btn--primary {
  background: var(--clr-purple);
  color: #FFFFFF;
  border-color: var(--clr-purple);
}

.btn--primary:hover {
  background: var(--clr-purple-dark);
  border-color: var(--clr-purple-dark);
  color: #FFFFFF;
  box-shadow: var(--shadow);
}

.btn--ghost {
  background: rgba(255, 255, 255, 0.1);
  color: #FFFFFF;
  border-color: rgba(255, 255, 255, 0.35);
}

.btn--ghost:hover {
  background: rgba(255, 255, 255, 0.2);
  border-color: rgba(255, 255, 255, 0.6);
  color: #FFFFFF;
}

.btn--outline {
  background: transparent;
  color: var(--clr-purple);
  border-color: var(--clr-purple);
}

.btn--outline:hover {
  background: var(--clr-purple);
  color: #FFFFFF;
}

.btn--accent {
  background: var(--clr-accent);
  color: #FFFFFF;
  border-color: var(--clr-accent);
}

.btn--accent:hover {
  background: var(--clr-accent-hover);
  border-color: var(--clr-accent-hover);
  color: #FFFFFF;
}

/* ────────────────────────────────────────────────────────────
   17. FORMS
──────────────────────────────────────────────────────────── */
.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--sp-2);
}

.form-row--two {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--sp-6);
}

@media (max-width: 600px) {
  .form-row--two {
    grid-template-columns: 1fr;
  }
}

.form-label {
  font-size: var(--fz-sm);
  font-weight: 700;
  color: var(--txt-primary);
}

/* Higher specificity to override wp-includes/css/forms.css */
.contact-form .form-input,
.contact-form input[type="text"],
.contact-form input[type="email"],
.contact-form textarea,
input.form-input,
textarea.form-input {
  width: 100%;
  padding: var(--sp-3) var(--sp-4);
  font-family: var(--font-base);
  font-size: var(--fz-base);
  line-height: var(--lh-base);
  color: var(--txt-primary);
  background: var(--bg-surface);
  border: 2px solid var(--border);
  border-radius: var(--radius);
  box-shadow: none;
  transition: border-color var(--transition), box-shadow var(--transition);
  appearance: none;
  -webkit-appearance: none;
}

.contact-form .form-input:focus,
.contact-form input[type="text"]:focus,
.contact-form input[type="email"]:focus,
.contact-form textarea:focus,
input.form-input:focus,
textarea.form-input:focus {
  border-color: var(--clr-purple);
  box-shadow: 0 0 0 4px rgba(75, 45, 159, 0.15);
  outline: none;
}

.contact-form .form-input[aria-invalid="true"],
input.form-input[aria-invalid="true"],
textarea.form-input[aria-invalid="true"] {
  border-color: var(--clr-error);
}

textarea.form-input,
.contact-form textarea {
  resize: vertical;
  min-height: 160px;
}

.form-error {
  font-size: var(--fz-xs);
  color: var(--clr-error);
  font-weight: 600;
  min-height: 1.2em;
}

.form-note {
  font-size: var(--fz-xs);
  color: var(--txt-muted);
}

.required {
  color: var(--clr-error);
  margin-left: var(--sp-1);
}

/* Honeypot */
.contact-form__honey {
  position: absolute;
  left: -9999px;
  top: -9999px;
  opacity: 0;
  pointer-events: none;
}

/* Status message */
.form-status {
  min-height: 2rem;
  font-size: var(--fz-sm);
  font-weight: 600;
  padding: var(--sp-3) var(--sp-4);
  border-radius: var(--radius);
  border: 2px solid transparent;
}

.form-status.is-success {
  background: #E6F4EC;
  border-color: var(--clr-success);
  color: var(--clr-success);
}

.form-status.is-error {
  background: #FDECEA;
  border-color: var(--clr-error);
  color: var(--clr-error);
}

/* ────────────────────────────────────────────────────────────
   18. CONTACT PAGE
──────────────────────────────────────────────────────────── */
.contact-page {
  max-width: 720px;
  margin-inline: auto;
  padding-top: var(--sp-8);
  padding-bottom: var(--sp-16);
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: var(--sp-6);
  margin-top: var(--sp-8);
}

/* ────────────────────────────────────────────────────────────
   19. PAGE HEADER
──────────────────────────────────────────────────────────── */
.page-header {
  margin-bottom: var(--sp-8);
  padding-bottom: var(--sp-6);
  border-bottom: 2px solid var(--border);
}

.page-header__title {
  font-size: var(--fz-2xl);
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--txt-primary);
  margin-bottom: var(--sp-3);
}

.page-header__desc,
.page-header__intro {
  font-size: var(--fz-md);
  color: var(--txt-muted);
  line-height: var(--lh-loose);
}

/* ────────────────────────────────────────────────────────────
   20. SINGLE POST / PAGE
──────────────────────────────────────────────────────────── */
.single-post__header {
  margin-bottom: var(--sp-8);
}

.single-post__title {
  font-size: clamp(var(--fz-xl), 4vw, var(--fz-3xl));
  font-weight: 800;
  line-height: var(--lh-tight);
  letter-spacing: -0.02em;
  color: var(--txt-primary);
  margin-top: var(--sp-3);
  margin-bottom: var(--sp-4);
}

.single-post__meta {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  font-size: var(--fz-sm);
  color: var(--txt-muted);
}

.single-post__featured {
  margin-bottom: var(--sp-8);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.single-post__image {
  width: 100%;
  height: auto;
}

/* Cap featured image height on desktop — cinematic crop */
@media (min-width: 769px) {
  .single-post__featured {
    aspect-ratio: 16 / 6;
  }
  .single-post__featured .single-post__image {
    height: 100%;
    object-fit: cover;
    object-position: center center;
  }
}

/* Prose (rich content) */
.prose {
  max-width: var(--max-content);
  color: var(--txt-secondary);
  line-height: var(--lh-loose);
}

.prose h2, .prose h3, .prose h4 {
  color: var(--txt-primary);
  font-weight: 700;
  letter-spacing: -0.01em;
  margin-top: var(--sp-8);
  margin-bottom: var(--sp-3);
}

.prose h2 { font-size: var(--fz-xl); }
.prose h3 { font-size: var(--fz-lg); }
.prose h4 { font-size: var(--fz-md); }

.prose p  { margin-bottom: var(--sp-4); }
.prose ul { list-style: disc; margin-left: var(--sp-6); margin-bottom: var(--sp-4); }
.prose ol { list-style: decimal; margin-left: var(--sp-6); margin-bottom: var(--sp-4); }
.prose li { margin-bottom: var(--sp-2); }

.prose a {
  color: var(--clr-purple);
  font-weight: 600;
}

.prose blockquote {
  border-left: 4px solid var(--clr-purple-light);
  padding: var(--sp-4) var(--sp-6);
  background: var(--bg-elevated);
  border-radius: 0 var(--radius) var(--radius) 0;
  margin-bottom: var(--sp-6);
  font-style: italic;
  color: var(--txt-muted);
}

.prose code {
  font-family: var(--font-mono);
  font-size: 0.9em;
  background: var(--bg-elevated);
  padding: 0.1em 0.35em;
  border-radius: 4px;
  color: var(--clr-purple);
}

.prose pre {
  background: var(--bg-footer);
  color: #E8E4FF;
  padding: var(--sp-6);
  border-radius: var(--radius);
  overflow-x: auto;
  font-size: var(--fz-sm);
  line-height: 1.7;
  margin-bottom: var(--sp-6);
}

.prose pre code {
  background: none;
  padding: 0;
  color: inherit;
  border-radius: 0;
}

.prose img {
  border-radius: var(--radius);
  margin-bottom: var(--sp-6);
}

.prose table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: var(--sp-6);
}

.prose th, .prose td {
  border: 1px solid var(--border);
  padding: var(--sp-3) var(--sp-4);
  text-align: left;
}

.prose th {
  background: var(--bg-elevated);
  font-weight: 700;
}

/* Post navigation */
.post-nav .nav-links {
  display: flex;
  gap: var(--sp-6);
  justify-content: space-between;
  flex-wrap: wrap;
}

.post-nav .nav-previous a,
.post-nav .nav-next a {
  font-weight: 600;
  color: var(--clr-purple);
}

/* Post tags */
.post-tags__list {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-2);
  list-style: none;
  margin-bottom: var(--sp-6);
}

.post-tags__list a {
  display: inline-block;
  padding: var(--sp-1) var(--sp-3);
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 100px;
  font-size: var(--fz-xs);
  font-weight: 600;
  color: var(--txt-secondary);
  text-decoration: none;
  transition: background var(--transition), color var(--transition);
}

.post-tags__list a:hover {
  background: var(--clr-purple);
  color: #FFFFFF;
  border-color: var(--clr-purple);
}

/* ────────────────────────────────────────────────────────────
   21. SIDEBAR
──────────────────────────────────────────────────────────── */
.page-layout__sidebar {
  padding-top: var(--sp-8);
}

.widget {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--sp-6);
  margin-bottom: var(--sp-6);
}

.widget__title {
  font-size: var(--fz-sm);
  font-weight: 800;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--txt-muted);
  margin-bottom: var(--sp-4);
  padding-bottom: var(--sp-3);
  border-bottom: 2px solid var(--border);
}

.widget ul { list-style: none; }
.widget ul li { padding: var(--sp-2) 0; border-bottom: 1px solid var(--border); }
.widget ul li:last-child { border-bottom: none; }
.widget ul a { color: var(--txt-secondary); text-decoration: none; font-weight: 600; }
.widget ul a:hover { color: var(--clr-purple); }

/* ────────────────────────────────────────────────────────────
   22. BREADCRUMBS
──────────────────────────────────────────────────────────── */
.breadcrumbs {
  margin-bottom: var(--sp-6);
}

.breadcrumbs__list {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-2);
  align-items: center;
  list-style: none;
  font-size: var(--fz-xs);
  color: var(--txt-muted);
}

.breadcrumbs__item + .breadcrumbs__item::before {
  content: '/';
  margin-right: var(--sp-2);
  color: var(--border-strong);
}

.breadcrumbs__link {
  color: var(--clr-purple);
  font-weight: 600;
}

.breadcrumbs__item--current {
  color: var(--txt-muted);
}

/* ────────────────────────────────────────────────────────────
   23. PAGINATION
──────────────────────────────────────────────────────────── */
.pagination {
  margin-top: var(--sp-10);
}

.pagination .nav-links {
  display: flex;
  gap: var(--sp-2);
  flex-wrap: wrap;
  align-items: center;
}

.pagination .page-numbers {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 40px;
  min-height: 40px;
  padding: var(--sp-2) var(--sp-3);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: var(--fz-sm);
  font-weight: 600;
  color: var(--txt-secondary);
  background: var(--bg-surface);
  text-decoration: none;
  transition: background var(--transition), color var(--transition), border-color var(--transition);
}

.pagination .page-numbers:hover,
.pagination .page-numbers.current {
  background: var(--clr-purple);
  color: #FFFFFF;
  border-color: var(--clr-purple);
}

/* ────────────────────────────────────────────────────────────
   24. 404
──────────────────────────────────────────────────────────── */
.error-404 {
  text-align: center;
  padding: var(--sp-24) 0;
}

.error-404__code {
  font-size: 8rem;
  font-weight: 800;
  line-height: 1;
  letter-spacing: -0.05em;
  color: var(--bg-elevated);
  margin-bottom: var(--sp-4);
}

.error-404__title {
  font-size: var(--fz-2xl);
  font-weight: 800;
  color: var(--txt-primary);
  margin-bottom: var(--sp-4);
}

.error-404__text {
  font-size: var(--fz-md);
  color: var(--txt-muted);
  max-width: 400px;
  margin-inline: auto;
  margin-bottom: var(--sp-8);
  line-height: var(--lh-loose);
}

/* ────────────────────────────────────────────────────────────
   25. NO RESULTS
──────────────────────────────────────────────────────────── */
.no-results {
  text-align: center;
  padding: var(--sp-16) 0;
}

.no-results__title {
  font-size: var(--fz-xl);
  font-weight: 700;
  color: var(--txt-primary);
  margin-bottom: var(--sp-4);
}

/* ────────────────────────────────────────────────────────────
   26. FOOTER
──────────────────────────────────────────────────────────── */
.site-footer {
  background: var(--bg-footer);
  padding: var(--sp-12) 0 0;
  margin-top: auto;
}

.site-footer__inner {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: var(--sp-12);
  align-items: start;
  padding-bottom: var(--sp-12);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

@media (max-width: 640px) {
  .site-footer__inner {
    grid-template-columns: 1fr;
  }
}

.site-footer__name {
  font-size: var(--fz-lg);
  font-weight: 800;
  color: var(--txt-on-dark);
  letter-spacing: -0.02em;
}

.site-footer__tagline {
  font-size: var(--fz-sm);
  color: var(--txt-on-dark-muted);
  margin-top: var(--sp-2);
  line-height: var(--lh-loose);
}

.site-footer__menu {
  display: flex;
  flex-direction: column;
  gap: var(--sp-2);
  list-style: none;
}

.site-footer__menu a {
  font-size: var(--fz-sm);
  font-weight: 600;
  color: var(--txt-on-dark-muted);
  text-decoration: none;
  transition: color var(--transition);
}

.site-footer__menu a:hover {
  color: var(--txt-on-dark);
}

.site-footer__bottom {
  padding: var(--sp-4) 0;
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-4);
}

.site-footer__bottom .container {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--sp-3);
}

.site-footer__copy,
.site-footer__credits {
  font-size: var(--fz-xs);
  color: var(--txt-on-dark-muted);
}

.site-footer__copy a {
  color: var(--txt-on-dark-muted);
  font-weight: 600;
}

.site-footer__copy a:hover {
  color: var(--txt-on-dark);
}

/* ────────────────────────────────────────────────────────────
   27. APP ICON
   Usage: add class "app-icon" to any <img> or <figure>,
   or select "App Icon" from the Image block Style panel
   in the Gutenberg editor (registered via register_block_style).
──────────────────────────────────────────────────────────── */

/* Base icon: square, rounded, shadowed */
.app-icon,
.wp-block-image.is-style-app-icon img,
.wp-block-image.is-style-app-icon figure {
  display: inline-block;
  width: 96px;
  height: 96px;
  border-radius: 22%;          /* iOS-style squircle approximation */
  object-fit: cover;
  object-position: center;
  box-shadow:
    0 2px 8px  rgba(75, 45, 159, 0.18),
    0 6px 24px rgba(75, 45, 159, 0.12),
    0 0  0 1px rgba(75, 45, 159, 0.08);
  overflow: hidden;            /* needed when on <figure> */
  flex-shrink: 0;
}

/* When used inside prose (articles), float left with text wrap */
.prose .app-icon,
.prose .wp-block-image.is-style-app-icon {
  float: left;
  margin: 0 var(--sp-6) var(--sp-4) 0;
  clear: left;
}

/* Size variants — add alongside .app-icon */
.app-icon--sm { width: 64px;  height: 64px;  border-radius: 20%; }
.app-icon--lg { width: 128px; height: 128px; border-radius: 22%; }
.app-icon--xl { width: 192px; height: 192px; border-radius: 22%; }

/* Gutenberg block wrapper needs overflow:hidden too */
.wp-block-image.is-style-app-icon {
  display: inline-block;
  width: 96px;
  height: 96px;
  border-radius: 22%;
  overflow: hidden;
  box-shadow:
    0 2px 8px  rgba(75, 45, 159, 0.18),
    0 6px 24px rgba(75, 45, 159, 0.12),
    0 0  0 1px rgba(75, 45, 159, 0.08);
}

.wp-block-image.is-style-app-icon img {
  width: 100%;
  height: 100%;
  border-radius: 0;   /* radius already on the figure wrapper */
  box-shadow: none;
}

/* Dark mode: slightly brighter glow */
[data-theme="dark"] .app-icon,
[data-theme="dark"] .wp-block-image.is-style-app-icon {
  box-shadow:
    0 2px 8px  rgba(0, 0, 0, 0.4),
    0 6px 28px rgba(0, 0, 0, 0.35),
    0 0  0 1px rgba(255, 255, 255, 0.06);
}

/* ────────────────────────────────────────────────────────────
   28. UTILITIES
──────────────────────────────────────────────────────────── */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* ────────────────────────────────────────────────────────────
   29. LIGHTBOX
──────────────────────────────────────────────────────────── */
@keyframes lb-fade-in {
  from { opacity: 0; transform: scale(0.97); }
  to   { opacity: 1; transform: scale(1); }
}

.lightbox {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--sp-4);
}

.lightbox[hidden] {
  display: none;
}

.lightbox:not([hidden]) {
  animation: lb-fade-in 180ms ease;
}

@media (prefers-reduced-motion: reduce) {
  .lightbox:not([hidden]) { animation: none; }
}
.reduce-motion .lightbox:not([hidden]) { animation: none; }

.lightbox__backdrop {
  position: absolute;
  inset: 0;
  background: rgba(10, 6, 22, 0.92);
  cursor: zoom-out;
}

.lightbox__figure {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--sp-3);
  max-width: min(90vw, 1100px);
  max-height: 90vh;
}

.lightbox__img {
  display: block;
  width: auto;
  height: auto;
  max-width: 100%;
  max-height: calc(90vh - 56px);
  border-radius: var(--radius);
  box-shadow: 0 8px 48px rgba(0, 0, 0, 0.6);
}

.lightbox__caption {
  color: rgba(255, 255, 255, 0.72);
  font-size: var(--fz-sm);
  line-height: var(--lh-base);
  text-align: center;
  max-width: 640px;
}

/* Controls */
.lightbox__close,
.lightbox__prev,
.lightbox__next {
  position: fixed;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 44px;
  min-height: 44px;
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.22);
  border-radius: var(--radius);
  color: #ffffff;
  font-size: var(--fz-xl);
  line-height: 1;
  cursor: pointer;
  transition: background var(--transition);
}

.lightbox__close:hover,
.lightbox__prev:hover,
.lightbox__next:hover {
  background: rgba(255, 255, 255, 0.24);
}

.lightbox__close {
  top: var(--sp-4);
  right: var(--sp-4);
  font-size: var(--fz-base);
}

.lightbox__prev,
.lightbox__next {
  top: 50%;
  transform: translateY(-50%);
  font-size: var(--fz-2xl);
  padding: 0 var(--sp-1);
}

.lightbox__prev { left: var(--sp-4); }
.lightbox__next { right: var(--sp-4); }

.lightbox__prev[hidden],
.lightbox__next[hidden] {
  display: none;
}

.lightbox__prev:disabled,
.lightbox__next:disabled {
  opacity: 0.28;
  cursor: default;
}

/* Make prose images show zoom cursor when lightbox is active */
.prose-lightbox-ready figure img,
.prose-lightbox-ready .wp-block-gallery img {
  cursor: zoom-in;
}