/* =====================================================================
   My Blog — Theme
   Deep graphite/ink dark mode, warm off-white light mode, cyan-teal accent.
   Loaded after Bulma CDN; overrides via CSS custom properties + targeted
   component rules. Cabinet Grotesk (display) / Satoshi (body) / JetBrains
   Mono (code) via Fontshare + Google Fonts CDN.
   ===================================================================== */

/* ---------------------------------------------------------------------
   1. Design tokens
   --------------------------------------------------------------------- */
:root,
[data-theme='light'] {
  /* Surfaces — warm off-white editorial paper */
  --color-bg: #f5f2ea;
  --color-surface: #fbf9f4;
  --color-surface-2: #ffffff;
  --color-surface-offset: #ece7db;
  --color-surface-sunken: #e7e1d2;
  --color-border: #d9d2c1;
  --color-divider: #e2dccb;

  /* Text */
  --color-text: #201d17;
  --color-text-muted: #62594a;
  --color-text-faint: #9c927c;
  --color-text-inverse: #f5f2ea;

  /* Accent — cyan/teal */
  --color-accent: #0f8b8d;
  --color-accent-hover: #0b6c6e;
  --color-accent-active: #094f50;
  --color-accent-highlight: #cfe9e6;
  --color-accent-soft: rgba(15, 139, 141, 0.1);

  /* Status */
  --color-success: #3f7d3a;
  --color-warning: #a3670f;
  --color-danger: #ab3434;

  /* Code block surface (editorial visual rhythm block) */
  --color-code-bg: #1b1b18;
  --color-code-text: #d8dee0;
  --color-code-accent: #59d5cf;
  --color-code-border: #34342f;

  --shadow-sm: 0 1px 2px rgba(32, 29, 23, 0.06);
  --shadow-md: 0 6px 18px rgba(32, 29, 23, 0.08);
  --shadow-lg: 0 16px 40px rgba(32, 29, 23, 0.14);

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;

  color-scheme: light;
}

[data-theme='dark'] {
  /* Surfaces — deep graphite / ink */
  --color-bg: #121315;
  --color-surface: #17181b;
  --color-surface-2: #1c1e21;
  --color-surface-offset: #202226;
  --color-surface-sunken: #0d0e10;
  --color-border: #2c2f34;
  --color-divider: #26282c;

  --color-text: #e7e6e2;
  --color-text-muted: #a2a29c;
  --color-text-faint: #6d6e6a;
  --color-text-inverse: #121315;

  --color-accent: #43d6d0;
  --color-accent-hover: #6ee4df;
  --color-accent-active: #2fb8b2;
  --color-accent-highlight: #1d3a39;
  --color-accent-soft: rgba(67, 214, 208, 0.12);

  --color-success: #78c26b;
  --color-warning: #e0a83c;
  --color-danger: #e2685f;

  --color-code-bg: #0b0c0e;
  --color-code-text: #d8dee0;
  --color-code-accent: #6ee4df;
  --color-code-border: #26282c;

  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 6px 18px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 20px 48px rgba(0, 0, 0, 0.5);

  color-scheme: dark;
}

/* ---------------------------------------------------------------------
   2. Fonts
   --------------------------------------------------------------------- */
:root {
  --font-display: 'Cabinet Grotesk', 'Satoshi', system-ui, sans-serif;
  --font-body: 'Satoshi', 'Inter', system-ui, sans-serif;
  --font-mono: 'JetBrains Mono', 'SFMono-Regular', Consolas, monospace;

  --text-xs: clamp(0.75rem, 0.72rem + 0.15vw, 0.8125rem);
  --text-sm: clamp(0.875rem, 0.83rem + 0.2vw, 0.9375rem);
  --text-base: clamp(1rem, 0.96rem + 0.2vw, 1.0625rem);
  --text-lg: clamp(1.125rem, 1.05rem + 0.4vw, 1.375rem);
  --text-xl: clamp(1.5rem, 1.3rem + 0.9vw, 2rem);
  --text-2xl: clamp(2rem, 1.5rem + 2vw, 3.25rem);
  --text-3xl: clamp(2.5rem, 1.6rem + 3.5vw, 4.5rem);

  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;
}

/* ---------------------------------------------------------------------
   3. Base
   --------------------------------------------------------------------- */
html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: 1.65;
  transition: background-color 200ms ease, color 200ms ease;
}

h1, h2, h3, h4, .title, .subtitle {
  font-family: var(--font-display) !important;
  color: var(--color-text) !important;
  letter-spacing: -0.01em;
}

a { color: var(--color-accent); }
a:hover { color: var(--color-accent-hover); }

code, pre, kbd, samp, .mono {
  font-family: var(--font-mono);
}

p, li { max-width: 68ch; }

::selection {
  background: var(--color-accent-highlight);
  color: var(--color-text);
}

:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

.section { padding-block: clamp(2.5rem, 6vw, 5rem); }

/* ---------------------------------------------------------------------
   4. Bulma overrides (surfaces, buttons, forms, navbar)
   --------------------------------------------------------------------- */
.navbar,
.navbar-menu,
.navbar-dropdown {
  background-color: var(--color-surface) !important;
}
.navbar-item, .navbar-link { color: var(--color-text) !important; }
.navbar-item:hover, .navbar-link:hover { background-color: var(--color-surface-offset) !important; color: var(--color-accent) !important; }
.navbar { border-bottom: 1px solid var(--color-border); }
.navbar-burger { color: var(--color-text); }

.box, .card, .message, .modal-card, .panel, .notification {
  background-color: var(--color-surface);
  color: var(--color-text);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
}
.card-header { background: transparent; box-shadow: none; border-bottom: 1px solid var(--color-border); }
.card-header-title { color: var(--color-text) !important; font-family: var(--font-display) !important; }

.button.is-primary {
  background-color: var(--color-accent);
  border-color: transparent;
  color: #06201f;
  font-weight: 600;
}
.button.is-primary:hover { background-color: var(--color-accent-hover); color: #06201f; }
.button.is-outlined.is-primary {
  color: var(--color-accent);
  border-color: var(--color-accent);
  background: transparent;
}
.button.is-outlined.is-primary:hover { background-color: var(--color-accent); color: #06201f; }
.button.is-light { background-color: var(--color-surface-offset); color: var(--color-text); }
.button.is-danger.is-outlined { color: var(--color-danger); border-color: var(--color-danger); }

.input, .textarea, .select select {
  background-color: var(--color-surface-2);
  border-color: var(--color-border);
  color: var(--color-text);
}
.input:focus, .textarea:focus, .select select:focus {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 0.125em var(--color-accent-soft);
}
.label { color: var(--color-text) !important; font-weight: 600; }
.help { color: var(--color-text-muted); }
.help.is-danger { color: var(--color-danger); }

.tag { border-radius: var(--radius-sm); }
.tag.is-success { background: var(--color-success); color: #06200a; }
.tag.is-warning { background: var(--color-warning); color: #241600; }
.tag.is-info.is-light { background: var(--color-accent-highlight); color: var(--color-text); }

.table { background: var(--color-surface); color: var(--color-text); }
.table td, .table th { border-color: var(--color-border); }
.table th { color: var(--color-text-muted); }
.table.is-hoverable tbody tr:hover { background-color: var(--color-surface-offset); }

hr { background-color: var(--color-divider); }

.footer { background-color: var(--color-surface); border-top: 1px solid var(--color-border); color: var(--color-text-muted); }

/* ---------------------------------------------------------------------
   5. Site chrome
   --------------------------------------------------------------------- */
.site-logo { display: flex; align-items: center; gap: var(--space-2); color: var(--color-text) !important; font-family: var(--font-display); font-weight: 700; font-size: var(--text-lg); }
.logo-plate { fill: var(--color-accent-highlight); }
[data-theme='dark'] .logo-plate { fill: #1a2e2d; }
.site-logo svg { color: var(--color-accent); }

.theme-toggle {
  display: inline-flex; align-items: center; justify-content: center;
  width: 40px; height: 40px; border-radius: var(--radius-md);
  border: 1px solid var(--color-border); background: var(--color-surface-2);
  color: var(--color-text); cursor: pointer;
}
.theme-toggle:hover { border-color: var(--color-accent); color: var(--color-accent); }

.skip-link {
  position: absolute; left: -9999px; top: 0; background: var(--color-accent);
  color: #06201f; padding: var(--space-2) var(--space-4); z-index: 100;
  border-radius: 0 0 var(--radius-sm) 0;
}
.skip-link:focus { left: 0; }

/* ---------------------------------------------------------------------
   6. Editorial / code visual-rhythm blocks (no decorative imagery)
   --------------------------------------------------------------------- */
.code-block {
  background: var(--color-code-bg);
  color: var(--color-code-text);
  border: 1px solid var(--color-code-border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  overflow-x: auto;
  box-shadow: var(--shadow-md);
  position: relative;
}
.code-block .code-dots { display: flex; gap: 6px; margin-bottom: var(--space-4); }
.code-block .code-dots span { width: 10px; height: 10px; border-radius: 50%; background: var(--color-code-border); }
.code-block pre { margin: 0; white-space: pre-wrap; word-break: break-word; }
.code-block .tok-kw { color: var(--color-code-accent); }
.code-block .tok-str { color: #e3c07a; }
.code-block .tok-com { color: #7c8489; font-style: italic; }

.hero-panel {
  background: linear-gradient(160deg, var(--color-surface) 0%, var(--color-surface-offset) 100%);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
}

.article-prose { max-width: 72ch; }
.article-prose h2 { font-size: var(--text-lg); margin-top: var(--space-10); margin-bottom: var(--space-3); }
.article-prose p, .article-prose ul, .article-prose pre { margin-bottom: var(--space-5); }
.article-prose pre { background: var(--color-code-bg); color: var(--color-code-text); padding: var(--space-4); border-radius: var(--radius-md); overflow-x: auto; font-size: var(--text-sm); }
.article-prose code { background: var(--color-accent-soft); padding: 0.1em 0.4em; border-radius: 4px; font-size: 0.9em; }
.article-prose pre code { background: none; padding: 0; }

.stat-strip { display: flex; flex-wrap: wrap; gap: var(--space-8); }
.stat-strip .stat b { display: block; font-family: var(--font-display); font-size: var(--text-xl); color: var(--color-accent); }
.stat-strip .stat span { color: var(--color-text-muted); font-size: var(--text-sm); }

.brack { color: var(--color-accent); font-family: var(--font-mono); }

/* ---------------------------------------------------------------------
   7. Course workspace
   --------------------------------------------------------------------- */
.workspace-shell { display: grid; grid-template-columns: 260px 1fr; gap: var(--space-6); align-items: start; }
.workspace-sidebar {
  background: var(--color-surface); border: 1px solid var(--color-border); border-radius: var(--radius-lg);
  padding: var(--space-4); position: sticky; top: var(--space-6);
}
.lesson-nav-item {
  display: flex; align-items: center; gap: var(--space-2);
  padding: var(--space-2) var(--space-3); border-radius: var(--radius-sm);
  color: var(--color-text); text-decoration: none; font-size: var(--text-sm);
}
.lesson-nav-item:hover { background: var(--color-surface-offset); color: var(--color-accent); }
.lesson-nav-item.is-active { background: var(--color-accent-soft); color: var(--color-accent); font-weight: 600; }
.lesson-nav-item .dot { width: 8px; height: 8px; border-radius: 50%; background: var(--color-border); flex-shrink: 0; }
.lesson-nav-item.is-complete .dot { background: var(--color-success); }

.progress-track { height: 6px; border-radius: 999px; background: var(--color-surface-offset); overflow: hidden; margin: var(--space-3) 0; }
.progress-fill { height: 100%; background: var(--color-accent); transition: width 240ms ease; }

.editor-tabs { display: flex; gap: var(--space-1); border-bottom: 1px solid var(--color-border); margin-bottom: 0; }
.editor-tab {
  padding: var(--space-2) var(--space-4); font-family: var(--font-mono); font-size: var(--text-xs);
  color: var(--color-text-muted); border: 1px solid transparent; border-bottom: none;
  border-radius: var(--radius-sm) var(--radius-sm) 0 0; cursor: pointer; background: transparent;
}
.editor-tab.is-active { color: var(--color-accent); background: var(--color-code-bg); border-color: var(--color-code-border); }
.editor-panel { display: none; }
.editor-panel.is-active { display: block; }
.code-editor {
  width: 100%; min-height: 220px; resize: vertical;
  background: var(--color-code-bg); color: var(--color-code-text);
  font-family: var(--font-mono); font-size: var(--text-sm); line-height: 1.6;
  border: 1px solid var(--color-code-border); border-top: none;
  border-radius: 0 0 var(--radius-md) var(--radius-md);
  padding: var(--space-4); tab-size: 2;
}
.code-editor:focus { outline: none; border-color: var(--color-accent); }

.workspace-toolbar { display: flex; gap: var(--space-2); flex-wrap: wrap; align-items: center; }
.sandbox-frame {
  width: 100%; min-height: 320px; border: 1px solid var(--color-border);
  border-radius: var(--radius-md); background: #ffffff;
}
.workspace-note {
  font-size: var(--text-xs); color: var(--color-text-muted);
  border-left: 3px solid var(--color-accent); padding-left: var(--space-3);
}

@media (max-width: 768px) {
  .workspace-shell { grid-template-columns: 1fr; }
  .workspace-sidebar { position: static; }
}

/* ---------------------------------------------------------------------
   7b. Admin shell
   --------------------------------------------------------------------- */
.admin-shell {
  display: flex;
  min-height: 100vh;
}
.admin-sidebar {
  width: 230px;
  flex-shrink: 0;
  background: var(--color-surface);
  border-right: 1px solid var(--color-border);
  padding: var(--space-5);
}
.admin-main {
  flex: 1;
  min-width: 0;
  padding: var(--space-8);
  max-width: 1100px;
}
.admin-sidebar-toggle {
  display: none;
  align-items: center;
  gap: var(--space-2);
  position: sticky;
  top: 0;
  z-index: 20;
  width: 100%;
  padding: var(--space-4) var(--space-5);
  background: var(--color-surface);
  border: none;
  border-bottom: 1px solid var(--color-border);
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 600;
  cursor: pointer;
}

@media (max-width: 768px) {
  .admin-shell {
    flex-direction: column;
    min-height: 0;
  }
  .admin-sidebar-toggle {
    display: flex;
  }
  .admin-sidebar {
    display: none;
    width: 100%;
    border-right: none;
    border-bottom: 1px solid var(--color-border);
  }
  .admin-sidebar.is-open {
    display: block;
  }
  .admin-main {
    max-width: 100%;
    padding: var(--space-5);
  }
}

/* ---------------------------------------------------------------------
   8. Utility
   --------------------------------------------------------------------- */
.text-muted { color: var(--color-text-muted); }
.text-faint { color: var(--color-text-faint); }
.section-eyebrow {
  font-family: var(--font-mono); font-size: var(--text-xs); letter-spacing: 0.08em;
  text-transform: uppercase; color: var(--color-accent);
}
.divider-dashed { border: none; border-top: 1px dashed var(--color-border); margin: var(--space-8) 0; }

@media (prefers-reduced-motion: reduce) {
  * { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}