:root {
  --bg: #eef7f3;
  --ink: #1a2e28;
  --focus: #0066cc;
  --cream: #f0faf5;
  --panel: rgba(240, 250, 245, 0.92);
  --career: #ffe08a;
  --research: #a3d9ff;
  --education: #b3f2cc;
  --invest: #ffc2d1;
  --accent-1: #004e44;
  --accent-2: #005f7a;
  --accent-3: #c8f0e8;
  --grid-line: rgba(0, 90, 70, 0.07);
  --grid-minor: rgba(0, 90, 70, 0.03);
  --col-min: 230px;
  --col-max: 280px;
  --card-min: 220px;
  --card-max: 280px;
}

[data-theme="dark"] {
  --bg: #0d1f1a;
  --ink: #cce8e0;
  --cream: #122b24;
  --panel: rgba(12, 28, 22, 0.94);
  --focus: #4cb8d0;
  --accent-1: #00a882;
  --accent-2: #0099bb;
  --accent-3: #003d2e;
  --grid-line: rgba(80, 200, 160, 0.07);
  --grid-minor: rgba(80, 200, 160, 0.03);
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: "Nunito", sans-serif;
  color: var(--ink);
  background-color: var(--bg);
  background-image:
    linear-gradient(var(--grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-line) 1px, transparent 1px),
    linear-gradient(var(--grid-minor) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-minor) 1px, transparent 1px);
  background-size: 50px 50px, 50px 50px, 10px 10px, 10px 10px;
}

.skip-link {
  position: absolute;
  top: -52px;
  left: 10px;
  z-index: 9999;
  background: var(--cream);
  color: var(--ink);
  padding: 0.5rem 0.8rem;
  border: 2px solid var(--ink);
  box-shadow: 4px 4px 0 var(--ink);
  text-decoration: none;
}

.skip-link:focus {
  top: 10px;
}

.site-title {
  font-family: "Press Start 2P", cursive;
  font-size: clamp(1rem, 2.5vw, 1.4rem);
  line-height: 1.5;
}

.hero {
  border: 3px solid var(--ink);
  box-shadow: 8px 8px 0 var(--ink);
  background: linear-gradient(135deg, var(--accent-1) 0%, var(--accent-2) 100%);
  color: #ffffff;
  position: relative;
}

.panel {
  border: 3px solid var(--ink);
  box-shadow: 6px 6px 0 var(--ink);
  background: var(--panel);
}

.pixel-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  border: 2px solid rgba(255, 255, 255, 0.6);
  box-shadow: 2px 2px 0 rgba(0, 0, 0, 0.25);
  background: rgba(255, 255, 255, 0.18);
  color: #ffffff;
  font-weight: 800;
  border-radius: 0;
}

.nav-btn {
  border: 2px solid var(--ink);
  box-shadow: 3px 3px 0 var(--ink);
  font-weight: 800;
  border-radius: 0;
}

.nav-btn.is-active,
.nav-btn[aria-current="page"] {
  transform: translate(-2px, -2px);
  box-shadow: 5px 5px 0 var(--ink);
  border-width: 3px;
}

.form-control,
.form-select {
  border: 2px solid var(--ink);
  border-radius: 0;
  font-weight: 700;
}

.sort-toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem 0.8rem;
  align-items: center;
  margin-top: 0.55rem;
}

.sort-toggle {
  display: inline-flex;
  align-items: center;
  gap: 0.28rem;
  border: 2px solid var(--ink);
  box-shadow: 2px 2px 0 var(--ink);
  background: var(--cream);
  color: var(--ink);
  font-size: 0.78rem;
  font-weight: 800;
  line-height: 1.2;
  padding: 0.22rem 0.48rem;
}

.sort-toggle:hover,
.sort-toggle:focus-visible {
  transform: translate(-1px, -1px);
}

.sort-key {
  opacity: 0.85;
}

.sort-value {
  min-width: 84px;
  text-align: left;
}

.sort-icon {
  font-size: 0.75rem;
}

.kanban {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(var(--col-min), var(--col-max)));
  gap: 1rem;
  align-items: stretch;
  justify-content: start;
}

.kanban-col {
  border: 3px solid var(--ink);
  box-shadow: 5px 5px 0 var(--ink);
  padding: 0.8rem;
  min-height: 220px;
  height: 100%;
  min-width: var(--col-min);
  max-width: var(--col-max);
  width: 100%;
}

.general-window {
  background: var(--cream);
}

.general-row {
  display: flex;
  gap: 0.8rem;
  overflow-x: auto;
  padding-bottom: 0.2rem;
}

.general-row .resource-card {
  min-width: var(--card-min);
  max-width: var(--card-max);
  width: 100%;
  margin-bottom: 0;
}

.kanban-col h2 {
  font-size: 1rem;
  font-weight: 800;
}

.col-career {
  background: color-mix(in srgb, var(--career) 84%, #f7ca63);
}

.col-research {
  background: color-mix(in srgb, var(--research) 84%, #72c0f7);
}

.col-education {
  background: color-mix(in srgb, var(--education) 84%, #87ddb1);
}

.col-invest {
  background: color-mix(in srgb, var(--invest) 84%, #ff9fbd);
}

.resource-card {
  display: block;
  border: 2px solid var(--ink);
  box-shadow: 4px 4px 0 var(--ink);
  border-radius: 0;
  text-decoration: none;
  color: var(--ink);
  padding: 0.75rem;
  margin-bottom: 0.75rem;
  transition: transform 0.18s ease;
  position: relative;
  min-width: 0;
  max-width: 100%;
}

.resource-card:hover,
.resource-card:focus-visible {
  transform: translate(-2px, -2px);
  text-decoration: none;
  color: var(--ink);
}

.card-career {
  background: #fff9e9;
}

.card-research {
  background: #f1f9ff;
}

.card-education {
  background: #f2fff8;
}

.card-invest {
  background: #fff3f7;
}

.home-topic-card.card-career {
  background: linear-gradient(145deg, #ffd24a, #ffea98);
}

.home-topic-card.card-research {
  background: linear-gradient(145deg, #63c0ff, #b4e3ff);
}

.home-topic-card.card-education {
  background: linear-gradient(145deg, #7be3ac, #bcf5d5);
}

.home-topic-card.card-invest {
  background: linear-gradient(145deg, #ff8fb1, #ffc5d8);
}

.home-topic-card .resource-title,
.home-topic-card .resource-summary,
.home-topic-card .resource-host {
  color: #1a2e28;
}

.resource-head {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.4rem;
}

.favicon {
  width: 20px;
  height: 20px;
  background: white;
  flex: 0 0 20px;
}

.resource-title {
  font-size: 0.95rem;
  font-weight: 800;
  margin: 0;
}

.resource-summary {
  font-size: 0.84rem;
  margin: 0 0 0.35rem;
}

.resource-host {
  font-size: 0.75rem;
  margin: 0;
  opacity: 0.8;
  overflow-wrap: anywhere;
}

.resource-date {
  font-size: 0.72rem;
  margin: 0.14rem 0 0;
  opacity: 0.86;
}

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem;
  margin-top: 0.35rem;
}

.tag-chip {
  border: 1px solid var(--ink);
  background: var(--cream);
  font-size: 0.68rem;
  font-weight: 700;
  padding: 0.1rem 0.35rem;
  line-height: 1.3;
}

.footer-note {
  font-size: 0.9rem;
}

.footer-link {
  color: var(--ink);
  font-weight: 700;
  text-decoration: underline;
  text-underline-offset: 2px;
}

.footer-link:hover,
.footer-link:focus-visible {
  opacity: 0.75;
}

.sort-help {
  font-size: 0.78rem;
  margin-top: 0.25rem;
  opacity: 0.8;
}

:focus-visible {
  outline: 3px dashed var(--focus);
  outline-offset: 3px;
}

@media (max-width: 767px) {
  body[data-topic] .container {
    max-width: 100%;
    padding-left: 10px;
    padding-right: 10px;
  }

  .hero {
    box-shadow: 4px 4px 0 var(--ink);
  }

  .site-title {
    font-size: 0.86rem;
    line-height: 1.4;
  }

  .hero .d-flex.flex-wrap.gap-2 {
    flex-wrap: nowrap !important;
    overflow-x: auto;
    padding-bottom: 0.2rem;
  }

  .hero .nav-btn {
    flex: 0 0 auto;
    font-size: 0.75rem;
    padding: 0.3rem 0.52rem;
  }

  .panel {
    box-shadow: 3px 3px 0 var(--ink);
  }

  .form-control {
    font-size: 0.92rem;
    padding: 0.42rem 0.6rem;
  }

  .sort-toolbar {
    flex-wrap: nowrap;
    overflow-x: auto;
    padding-bottom: 0.2rem;
    gap: 0.45rem;
  }

  .sort-toggle {
    flex: 0 0 auto;
    font-size: 0.72rem;
    padding: 0.2rem 0.42rem;
    box-shadow: 1px 1px 0 var(--ink);
  }

  .sort-value {
    min-width: 70px;
  }

  .sort-help {
    font-size: 0.7rem;
    margin-top: 0.35rem;
  }

  .general-window {
    padding: 0.6rem !important;
  }

  .general-row {
    display: grid;
    grid-auto-flow: column;
    grid-auto-columns: minmax(var(--card-min), 78vw);
    gap: 0.6rem;
    scroll-snap-type: x mandatory;
  }

  .general-row .resource-card {
    min-width: 0;
    max-width: none;
    width: 100%;
    scroll-snap-align: start;
  }

  .kanban {
    display: grid;
    grid-auto-flow: column;
    grid-auto-columns: minmax(var(--col-min), 88vw);
    grid-template-columns: none;
    overflow-x: auto;
    gap: 0.7rem;
    scroll-snap-type: x mandatory;
    justify-content: start;
    padding-bottom: 0.2rem;
  }

  .kanban-col {
    min-width: var(--col-min);
    max-width: min(var(--col-max), 88vw);
    min-height: 0;
    padding: 0.55rem;
    box-shadow: 3px 3px 0 var(--ink);
    scroll-snap-align: start;
  }

  .kanban-col h2 {
    font-size: 0.9rem;
    margin-bottom: 0.45rem;
  }

  .resource-card {
    min-width: min(var(--card-min), 100%);
    max-width: 100%;
    padding: 0.55rem;
    margin-bottom: 0.55rem;
    box-shadow: 2px 2px 0 var(--ink);
  }

  .resource-title {
    font-size: 0.86rem;
  }

  .resource-summary {
    font-size: 0.75rem;
    margin-bottom: 0.25rem;
    display: -webkit-box;
    line-clamp: 2;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
  }

  .resource-host {
    font-size: 0.67rem;
  }

  .resource-date {
    font-size: 0.64rem;
  }

  .tag-list {
    margin-top: 0.25rem;
  }

  .tag-chip {
    font-size: 0.6rem;
    padding: 0.07rem 0.24rem;
  }

  .tag-chip:nth-child(n + 3) {
    display: none;
  }
}

@media (min-width: 1400px) {
  body[data-topic] .container {
    max-width: 96vw !important;
  }

  .kanban {
    grid-template-columns: repeat(auto-fit, minmax(var(--col-min), var(--col-max)));
    justify-content: start;
  }
}

@media (prefers-reduced-motion: reduce) {
  * {
    animation: none !important;
    transition: none !important;
    scroll-behavior: auto !important;
  }
}

/* === Theme toggle button === */
.theme-toggle {
  position: absolute;
  top: 0.75rem;
  right: 0.75rem;
  z-index: 10;
  border: 2px solid rgba(255, 255, 255, 0.6);
  box-shadow: 2px 2px 0 rgba(0, 0, 0, 0.25);
  background: rgba(255, 255, 255, 0.18);
  color: #ffffff;
  padding: 0.3rem 0.55rem;
  font-size: 1rem;
  line-height: 1;
  cursor: pointer;
  border-radius: 0;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.theme-toggle:hover,
.theme-toggle:focus-visible {
  transform: translate(-1px, -1px);
  box-shadow: 3px 3px 0 rgba(0, 0, 0, 0.3);
  background: rgba(255, 255, 255, 0.28);
}

/* === Dark theme overrides === */
[data-theme="dark"] body {
  color: var(--ink);
  background-color: var(--bg);
}

[data-theme="dark"] .panel {
  background: var(--panel);
  border-color: rgba(80, 200, 160, 0.35);
  box-shadow: 6px 6px 0 rgba(80, 200, 160, 0.2);
}

[data-theme="dark"] .hero {
  border-color: rgba(80, 200, 160, 0.45);
  box-shadow: 8px 8px 0 rgba(80, 200, 160, 0.25);
}

[data-theme="dark"] .nav-btn {
  border-color: rgba(80, 200, 160, 0.4) !important;
  box-shadow: 3px 3px 0 rgba(80, 200, 160, 0.25) !important;
}

[data-theme="dark"] .nav-btn.is-active,
[data-theme="dark"] .nav-btn[aria-current="page"] {
  box-shadow: 5px 5px 0 rgba(80, 200, 160, 0.3) !important;
}

[data-theme="dark"] .resource-card {
  border-color: rgba(80, 200, 160, 0.3);
  box-shadow: 4px 4px 0 rgba(80, 200, 160, 0.18);
  color: var(--ink);
}

[data-theme="dark"] .resource-card:hover,
[data-theme="dark"] .resource-card:focus-visible {
  color: var(--ink);
}

[data-theme="dark"] .card-career { background: #1e1400; }
[data-theme="dark"] .card-research { background: #001428; }
[data-theme="dark"] .card-education { background: #001408; }
[data-theme="dark"] .card-invest { background: #200010; }

[data-theme="dark"] .home-topic-card.card-career {
  background: linear-gradient(145deg, #3a2800, #4d3a00);
}

[data-theme="dark"] .home-topic-card.card-research {
  background: linear-gradient(145deg, #001e40, #003060);
}

[data-theme="dark"] .home-topic-card.card-education {
  background: linear-gradient(145deg, #001e0c, #003018);
}

[data-theme="dark"] .home-topic-card.card-invest {
  background: linear-gradient(145deg, #2a0018, #420028);
}

[data-theme="dark"] .home-topic-card .resource-title,
[data-theme="dark"] .home-topic-card .resource-summary,
[data-theme="dark"] .home-topic-card .resource-host {
  color: var(--ink);
}

[data-theme="dark"] .col-career { background: #221800 !important; }
[data-theme="dark"] .col-research { background: #00162e !important; }
[data-theme="dark"] .col-education { background: #001608 !important; }
[data-theme="dark"] .col-invest { background: #220012 !important; }

[data-theme="dark"] .kanban-col {
  border-color: rgba(80, 200, 160, 0.3);
  box-shadow: 5px 5px 0 rgba(80, 200, 160, 0.18);
}

[data-theme="dark"] .general-window {
  background: #0a1e16;
}

[data-theme="dark"] .sort-toggle {
  background: var(--cream);
  border-color: rgba(80, 200, 160, 0.4);
  box-shadow: 2px 2px 0 rgba(80, 200, 160, 0.2);
  color: var(--ink);
}

[data-theme="dark"] .tag-chip {
  background: var(--cream);
  border-color: rgba(80, 200, 160, 0.4);
  color: var(--ink);
}

[data-theme="dark"] .form-control,
[data-theme="dark"] .form-select {
  background-color: var(--cream);
  border-color: rgba(80, 200, 160, 0.5);
  color: var(--ink);
}

[data-theme="dark"] .form-control:focus,
[data-theme="dark"] .form-select:focus {
  background-color: var(--cream);
  border-color: var(--focus);
  color: var(--ink);
  box-shadow: 0 0 0 0.2rem rgba(76, 184, 208, 0.25);
}

[data-theme="dark"] .form-control::placeholder {
  color: rgba(204, 232, 224, 0.45);
}

[data-theme="dark"] .skip-link {
  background: var(--cream);
  color: var(--ink);
  border-color: rgba(80, 200, 160, 0.5);
  box-shadow: 4px 4px 0 rgba(80, 200, 160, 0.3);
}

[data-theme="dark"] .theme-toggle {
  background: rgba(255, 255, 255, 0.12);
  border-color: rgba(255, 255, 255, 0.4);
}

[data-theme="dark"] .theme-toggle:hover,
[data-theme="dark"] .theme-toggle:focus-visible {
  background: rgba(255, 255, 255, 0.22);
}

[data-theme="dark"] .footer-link {
  color: var(--ink);
}

@media (max-width: 767px) {
  [data-theme="dark"] .panel {
    box-shadow: 3px 3px 0 rgba(80, 200, 160, 0.2);
  }

  [data-theme="dark"] .kanban-col {
    box-shadow: 3px 3px 0 rgba(80, 200, 160, 0.18);
  }

  [data-theme="dark"] .resource-card {
    box-shadow: 2px 2px 0 rgba(80, 200, 160, 0.18);
  }
}