/*
  LOBEE.CA — Shared Design System
  ════════════════════════════════
  All pages import this one file. Never hardcode colours or spacing
  directly in a page — use the CSS custom properties defined here.

  TO UPDATE THE COLOUR SCHEME: edit the variables in :root / [data-theme="dark"]
  TO UPDATE FONTS:              edit --font-body and --font-display
  TO UPDATE SPACING / RADIUS:   edit the --space-* and --radius-* tokens
  TO ADD A NEW PAGE:            copy template.html, update the title/content,
                                 the header/footer are identical across every page.

  TABLE OF CONTENTS
  ─────────────────
  1. Design tokens  (colours, type scale, spacing, radius, transitions)
  2. Dark-mode overrides
  3. Base reset
  4. Layout helpers
  5. Header
  6. Hero / page-header section
  7. Card blocks
  8. Tag pills
  9. Back button
  10. Article / content
  11. Continue section
  12. Footer
  13. Theme toggle button
  14. Utility classes
*/

/* ─────────────────────────────────────────────────────
   1. DESIGN TOKENS — light mode (day) defaults
   ───────────────────────────────────────────────────── */
:root {
  /* Surfaces */
  --color-bg:          #f5f4ef;
  --color-surface:     #ffffff;
  --color-surface-2:   #f0efe9;
  --color-border:      rgba(0, 0, 0, 0.08);
  --color-divider:     rgba(0, 0, 0, 0.06);

  /* Text */
  --color-text:        #1a1916;
  --color-text-muted:  #5a5854;
  --color-text-faint:  #9a9894;

  /* Accent — orange brand */
  --color-accent:      #ea6f1a;
  --color-accent-hover:#c95a10;
  --color-accent-bg:   rgba(234, 111, 26, 0.08);
  --color-accent-border: rgba(234, 111, 26, 0.22);

  /* Header */
  --color-header-bg:   rgba(245, 244, 239, 0.85);
  --color-header-border: rgba(0,0,0,0.08);

  /* Card */
  --color-card-bg:     #ffffff;
  --color-card-hover:  #faf9f5;
  --color-card-border: rgba(0,0,0,0.07);
  --color-card-hover-border: rgba(234,111,26,0.30);
  --color-card-hover-shadow: 0 0 0 1px rgba(234,111,26,0.12), 0 8px 28px rgba(0,0,0,0.10);

  /* Footer */
  --color-footer-bg:   #eeede7;
  --color-footer-border: rgba(0,0,0,0.07);

  /* Type scale */
  --text-xs:   clamp(0.75rem,  0.7rem  + 0.25vw, 0.875rem);
  --text-sm:   clamp(0.875rem, 0.8rem  + 0.35vw, 1rem);
  --text-base: clamp(1rem,     0.95rem + 0.25vw, 1.125rem);
  --text-lg:   clamp(1.125rem, 1rem    + 0.75vw, 1.5rem);
  --text-xl:   clamp(1.5rem,   1.2rem  + 1.25vw, 2.25rem);
  --text-2xl:  clamp(2rem,     1.2rem  + 2.5vw,  3.5rem);

  /* Spacing (4 px base) */
  --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;

  /* Border radius */
  --radius-sm:   0.375rem;
  --radius-md:   0.5rem;
  --radius-lg:   0.75rem;
  --radius-full: 9999px;

  /* Transitions */
  --transition: 180ms cubic-bezier(0.16, 1, 0.3, 1);

  /* Shadows */
  --shadow-sm:  0 1px 3px rgba(0,0,0,0.07);
  --shadow-md:  0 4px 14px rgba(0,0,0,0.09);
  --shadow-lg:  0 12px 32px rgba(0,0,0,0.12);

  /* Fonts — loaded via Google Fonts in each HTML <head> */
  --font-body:    'Inter', system-ui, sans-serif;
  --font-display: 'Inter', system-ui, sans-serif;

  /* Layout widths */
  --content-narrow:  640px;
  --content-default: 960px;
  --content-wide:   1200px;
}

/* ─────────────────────────────────────────────────────
   2. DARK MODE OVERRIDES
   ───────────────────────────────────────────────────── */
[data-theme="dark"] {
  --color-bg:          rgb(11, 19, 43);
  --color-surface:     rgb(22, 30, 54);
  --color-surface-2:   rgb(17, 25, 48);
  --color-border:      rgba(255,255,255,0.07);
  --color-divider:     rgba(255,255,255,0.05);

  --color-text:        #e8e6e1;
  --color-text-muted:  rgba(209,213,219,0.65);
  --color-text-faint:  rgba(209,213,219,0.35);

  --color-accent:      #fb923c;
  --color-accent-hover:#fba55a;
  --color-accent-bg:   rgba(251,146,60,0.10);
  --color-accent-border: rgba(251,146,60,0.25);

  --color-header-bg:   rgba(11, 19, 43, 0.85);
  --color-header-border: rgba(255,255,255,0.07);

  --color-card-bg:     rgb(22, 30, 54);
  --color-card-hover:  rgb(28, 38, 66);
  --color-card-border: rgba(255,255,255,0.08);
  --color-card-hover-border: rgba(251,146,60,0.35);
  --color-card-hover-shadow: 0 0 0 1px rgba(251,146,60,0.15), 0 8px 28px rgba(0,0,0,0.35);

  --color-footer-bg:   rgba(5, 10, 24, 0.95);
  --color-footer-border: rgba(255,255,255,0.06);

  --shadow-sm:  0 1px 3px rgba(0,0,0,0.25);
  --shadow-md:  0 4px 14px rgba(0,0,0,0.35);
  --shadow-lg:  0 12px 32px rgba(0,0,0,0.45);
}

/* System preference fallback — no manual toggle yet */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) {
    --color-bg:          rgb(11, 19, 43);
    --color-surface:     rgb(22, 30, 54);
    --color-surface-2:   rgb(17, 25, 48);
    --color-border:      rgba(255,255,255,0.07);
    --color-divider:     rgba(255,255,255,0.05);
    --color-text:        #e8e6e1;
    --color-text-muted:  rgba(209,213,219,0.65);
    --color-text-faint:  rgba(209,213,219,0.35);
    --color-accent:      #fb923c;
    --color-accent-hover:#fba55a;
    --color-accent-bg:   rgba(251,146,60,0.10);
    --color-accent-border: rgba(251,146,60,0.25);
    --color-header-bg:   rgba(11, 19, 43, 0.85);
    --color-header-border: rgba(255,255,255,0.07);
    --color-card-bg:     rgb(22, 30, 54);
    --color-card-hover:  rgb(28, 38, 66);
    --color-card-border: rgba(255,255,255,0.08);
    --color-card-hover-border: rgba(251,146,60,0.35);
    --color-card-hover-shadow: 0 0 0 1px rgba(251,146,60,0.15), 0 8px 28px rgba(0,0,0,0.35);
    --color-footer-bg:   rgba(5, 10, 24, 0.95);
    --color-footer-border: rgba(255,255,255,0.06);
    --shadow-sm:  0 1px 3px rgba(0,0,0,0.25);
    --shadow-md:  0 4px 14px rgba(0,0,0,0.35);
    --shadow-lg:  0 12px 32px rgba(0,0,0,0.45);
  }
}

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

html {
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  scroll-behavior: smooth;
  scroll-padding-top: var(--space-16);
}

body {
  min-height: 100dvh;
  line-height: 1.65;
  font-family: var(--font-body);
  font-size: var(--text-base);
  color: var(--color-text);
  background-color: var(--color-bg);
  transition: background-color 250ms ease, color 250ms ease;
}

img, picture, video, canvas, svg { display: block; max-width: 100%; height: auto; }
ul[role="list"], ol[role="list"] { list-style: none; }
input, button, textarea, select { font: inherit; color: inherit; }
h1,h2,h3,h4,h5,h6 { text-wrap: balance; line-height: 1.2; }
p, li { text-wrap: pretty; }

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

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

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

button { cursor: pointer; background: none; border: none; }

a, button, [role="button"] {
  transition: color var(--transition),
              background var(--transition),
              border-color var(--transition),
              box-shadow var(--transition);
}

/* ─────────────────────────────────────────────────────
   4. LAYOUT HELPERS
   ───────────────────────────────────────────────────── */
.container {
  max-width: var(--content-wide);
  margin-inline: auto;
  padding-inline: var(--space-6);
}
.container--narrow {
  max-width: var(--content-narrow);
  margin-inline: auto;
  padding-inline: var(--space-6);
}
.container--default {
  max-width: var(--content-default);
  margin-inline: auto;
  padding-inline: var(--space-6);
}

@media (min-width: 640px) {
  .container, .container--narrow, .container--default {
    padding-inline: var(--space-8);
  }
}

/* ─────────────────────────────────────────────────────
   5. HEADER
   ───────────────────────────────────────────────────── */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  width: 100%;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-4) var(--space-6);
  border-bottom: 1px solid var(--color-header-border);
  background: var(--color-header-bg);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  gap: var(--space-3);
  transition: background var(--transition), border-color var(--transition);
}

.site-header__brand {
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--color-text);
  text-decoration: none;
  letter-spacing: -0.01em;
}

.site-header__right {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  flex-wrap: wrap;
}

.site-nav {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
  font-size: var(--text-sm);
  font-weight: 500;
}

.site-nav a {
  color: var(--color-text-muted);
  text-decoration: none;
}
.site-nav a:hover {
  color: var(--color-accent);
}
.site-nav a[aria-current="page"] {
  color: var(--color-accent);
  font-weight: 600;
}

@media (min-width: 640px) {
  .site-header {
    padding-inline: var(--space-10);
  }
}

/* ─────────────────────────────────────────────────────
   6. PAGE HEADER SECTION
   ───────────────────────────────────────────────────── */
.page-header {
  text-align: center;
  padding-block: var(--space-16);
  border-bottom: 1px solid var(--color-border);
  padding-inline: var(--space-4);
}

.page-header__title {
  font-size: var(--text-xl);
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: var(--space-2);
}

/* ─────────────────────────────────────────────────────
   7. CARD BLOCKS
   ───────────────────────────────────────────────────── */
.card-block {
  display: block;
  border: 1px solid var(--color-card-border);
  background: var(--color-card-bg);
  padding: var(--space-8);
  border-radius: var(--radius-lg);
  text-decoration: none;
  transition: background var(--transition),
              border-color var(--transition),
              box-shadow var(--transition),
              transform var(--transition);
  position: relative;
  overflow: hidden;
}

.card-block:hover {
  background: var(--color-card-hover);
  border-color: var(--color-card-hover-border);
  box-shadow: var(--color-card-hover-shadow);
  transform: translateY(-2px);
}

.card-block:active {
  transform: translateY(0);
  box-shadow: none;
}

.card-block h4 {
  font-size: var(--text-base);
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: var(--space-2);
}

.card-block p {
  color: var(--color-text-muted);
  font-size: var(--text-sm);
  margin-bottom: var(--space-4);
  line-height: 1.55;
}

.card-cta {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-accent);
  letter-spacing: 0.01em;
  transition: gap var(--transition);
}
.card-block:hover .card-cta { gap: 0.55rem; }

/* Card grid layouts */
.card-grid {
  display: grid;
  gap: var(--space-8);
}
@media (min-width: 640px) { .card-grid--2 { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1024px) { .card-grid--3 { grid-template-columns: repeat(3, 1fr); } }
@media (min-width: 640px) { .card-grid--3 { grid-template-columns: repeat(2, 1fr); } }

/* ─────────────────────────────────────────────────────
   8. TAG PILLS
   ───────────────────────────────────────────────────── */
.tag-pill {
  display: inline-block;
  font-size: var(--text-xs);
  font-weight: 500;
  background: var(--color-accent-bg);
  color: var(--color-accent);
  border: 1px solid var(--color-accent-border);
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
  text-decoration: none;
  transition: background var(--transition), border-color var(--transition);
}
.tag-pill:hover {
  background: rgba(234,111,26,0.16);
  border-color: rgba(234,111,26,0.45);
}
[data-theme="dark"] .tag-pill:hover {
  background: rgba(251,146,60,0.18);
  border-color: rgba(251,146,60,0.50);
}

/* ─────────────────────────────────────────────────────
   9. BACK BUTTON
   ───────────────────────────────────────────────────── */
.btn-back {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-accent);
  border: 1px solid var(--color-accent-border);
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-full);
  text-decoration: none;
  margin-bottom: var(--space-6);
  transition: background var(--transition), border-color var(--transition);
}
.btn-back:hover {
  background: var(--color-accent-bg);
  border-color: rgba(234,111,26,0.50);
}
[data-theme="dark"] .btn-back:hover {
  border-color: rgba(251,146,60,0.55);
}

/* ─────────────────────────────────────────────────────
   10. ARTICLE / CONTENT
   ───────────────────────────────────────────────────── */
.prose {
  max-width: var(--content-narrow);
  margin-inline: auto;
  padding-block: var(--space-16);
  padding-inline: var(--space-6);
  line-height: 1.7;
  color: var(--color-text);
}

@media (min-width: 640px) {
  .prose { padding-inline: var(--space-8); }
}

.prose h3 {
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--color-text);
  margin-top: var(--space-10);
  margin-bottom: var(--space-3);
}

.prose p {
  color: var(--color-text-muted);
  margin-bottom: var(--space-4);
  max-width: 68ch;
}

.prose ul {
  list-style: disc;
  padding-left: var(--space-5);
  margin-bottom: var(--space-4);
  color: var(--color-text-muted);
}

.prose li { margin-bottom: var(--space-2); }

.prose img {
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  margin-block: var(--space-10);
  width: 100%;
  box-shadow: var(--shadow-md);
}

.prose-tags {
  margin-top: var(--space-12);
  padding-top: var(--space-8);
  border-top: 1px solid var(--color-divider);
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
}

.prose a {
  color: var(--color-accent);
  text-decoration: underline;
  text-underline-offset: 3px;
}
.prose a:hover { color: var(--color-accent-hover); }

.prose .italic-note {
  font-style: italic;
  font-size: var(--text-sm);
  color: var(--color-text-faint);
  margin-bottom: var(--space-2);
}

/* ─────────────────────────────────────────────────────
   11. CONTINUE / SECTION BLOCKS
   ───────────────────────────────────────────────────── */
.section-block {
  padding-bottom: var(--space-20);
}

.section-block h3 {
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: var(--space-6);
}

/* ─────────────────────────────────────────────────────
   12. FOOTER
   ───────────────────────────────────────────────────── */
.site-footer {
  border-top: 1px solid var(--color-footer-border);
  background: var(--color-footer-bg);
  padding-block: var(--space-6);
  font-size: var(--text-sm);
  color: var(--color-text-faint);
  transition: background var(--transition), border-color var(--transition);
}

.site-footer__inner {
  max-width: var(--content-wide);
  margin-inline: auto;
  padding-inline: var(--space-6);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  text-align: center;
}

@media (min-width: 640px) {
  .site-footer__inner {
    flex-direction: row;
    justify-content: space-between;
    text-align: left;
    padding-inline: var(--space-8);
  }
}

.site-footer__links {
  display: flex;
  gap: var(--space-6);
  justify-content: center;
}

@media (min-width: 640px) {
  .site-footer__links { justify-content: flex-end; }
}

.site-footer__links a {
  color: var(--color-text-faint);
  text-decoration: none;
}
.site-footer__links a:hover { color: var(--color-accent); }

/* ─────────────────────────────────────────────────────
   13. THEME TOGGLE
   ───────────────────────────────────────────────────── */
.theme-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: var(--radius-full);
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  color: var(--color-text-muted);
  cursor: pointer;
  transition: background var(--transition),
              border-color var(--transition),
              color var(--transition);
  flex-shrink: 0;
}
.theme-toggle:hover {
  background: var(--color-surface-2);
  color: var(--color-accent);
  border-color: var(--color-accent-border);
}
.theme-toggle svg { width: 16px; height: 16px; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }

/* ─────────────────────────────────────────────────────
   14. UTILITY CLASSES
   ───────────────────────────────────────────────────── */
.text-accent   { color: var(--color-accent); }
.text-muted    { color: var(--color-text-muted); }
.text-faint    { color: var(--color-text-faint); }
.space-y > * + * { margin-top: var(--space-4); }

/* Hero image frame (home page) */
.hero-frame {
  display: block;
  width: 100%;
  max-width: 900px;
  margin-inline: auto;
  margin-top: var(--space-6);
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}
.hero-frame img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: inherit;
}
