/* ═══════════════════════════════════════════════════════════════════
   HastyLabs — Main Stylesheet
   Brand palette:
     --hl-bg        #121212  Dark background
     --hl-green     #90EE90  "Hasty" brand green
     --hl-white     #FFFFFF  "Labs" white
     --hl-grey      #808080  Scanner / sub-items
     --hl-border    #333333  Borders & accents
     --hl-sidebar   #0d0d0d  Slightly darker sidebar
═══════════════════════════════════════════════════════════════════ */

/* fonts: Inter + system mono — loaded via brand.css or system fonts */

/* ── Reset & Variables ────────────────────────────────────────────── */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --hl-bg:      #0a0c0f;
  --hl-green:   #90EE90;
  --hl-white:   #FFFFFF;
  --hl-grey:    #808080;
  --hl-border:  #1e2530;
  --hl-sidebar: #0e1015;
  --hl-sidebar-w: 220px;
  --font-sans:     'Inter', system-ui, -apple-system, sans-serif;
  --font-mono:     'ui-monospace', 'SFMono-Regular', 'Cascadia Code', 'Segoe UI Mono', monospace;
  --font:          var(--font-sans);
  --font-mono-hl:  var(--font-mono);

  --weight-black:  800;
  --weight-bold:   700;
  --weight-medium: 500;
  --weight-reg:    400;

  --ls-hero:       -1px;
  --ls-logo:       -0.3px;
  --ls-ui:         1.2px;
  --ls-badge:      3px;

  --logo-size:     1.6rem;
}

html, body {
  height: 100%;
}

body {
  font-family: var(--font);
  background-color: var(--hl-bg);
  color: var(--hl-white);
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  position: relative;
}

/* Scanline overlay */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background: repeating-linear-gradient(0deg, transparent, transparent 2px, rgba(0,0,0,0.08) 2px, rgba(0,0,0,0.08) 4px);
  pointer-events: none;
  z-index: 999;
}

/* Grid background */
body::after {
  content: '';
  position: fixed;
  inset: 0;
  background-image: linear-gradient(rgba(144, 238, 144, 0.02) 1px, transparent 1px), linear-gradient(90deg, rgba(144, 238, 144, 0.02) 1px, transparent 1px);
  background-size: 40px 40px;
  pointer-events: none;
  z-index: 0;
}

a {
  text-decoration: none;
  color: inherit;
}

/* ── Sidebar ──────────────────────────────────────────────────────── */
.sidebar {
  position: fixed;
  top: 0;
  left: 0;
  width: var(--hl-sidebar-w);
  height: 100vh;
  background: var(--hl-sidebar);
  border-right: 1px solid var(--hl-border);
  display: flex;
  flex-direction: column;
  z-index: 100;
  overflow-y: auto;
}

.sidebar__brand {
  padding: 24px 20px 20px;
  border-bottom: 1px solid var(--hl-border);
  user-select: none;
}

.sidebar__brand-name {
  font-size: var(--logo-size);
  font-weight: var(--weight-black);
  letter-spacing: var(--ls-logo);
  line-height: 1;
}

.sidebar__brand-name .hasty {
  color: var(--hl-green);
}

.sidebar__brand-name .labs {
  color: var(--hl-white);
}

.sidebar__brand-tagline {
  font-size: 0.65rem;
  color: var(--hl-grey);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-top: 4px;
}

/* ── Nav ──────────────────────────────────────────────────────────── */
.sidebar__nav {
  flex: 1;
  padding: 12px 0;
}

.nav-item {
  display: flex;
  align-items: center;
  padding: 10px 20px;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--hl-grey);
  border-left: 3px solid transparent;
  transition: color 0.2s, border-color 0.2s, background 0.2s;
  cursor: pointer;
}

.nav-item:hover {
  color: var(--hl-white);
  background: rgba(144, 238, 144, 0.05);
  border-left-color: var(--hl-green);
}

.nav-item.active {
  color: var(--hl-green);
  border-left-color: var(--hl-green);
  background: rgba(144, 238, 144, 0.08);
}

/* normal top-level items */
.nav-item--main {
  color: #c0c0c0;
}

.nav-item--main:hover,
.nav-item--main.active {
  color: var(--hl-white);
}

/* Section label */
.nav-section {
  padding: 16px 20px 4px;
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--hl-border);
}

/* Sub-item: grey left bar prefix */
.nav-item--sub {
  padding-left: 28px;
  font-size: 0.82rem;
  font-weight: 400;
  color: var(--hl-grey);
  position: relative;
}

.nav-item--sub::before {
  content: '';
  position: absolute;
  left: 16px;
  top: 50%;
  transform: translateY(-50%);
  width: 3px;
  height: 16px;
  background: var(--hl-grey);
  border-radius: 2px;
  opacity: 0.5;
}

.nav-item--sub:hover::before {
  background: var(--hl-green);
  opacity: 0.8;
}

.nav-item--sub.active::before {
  background: var(--hl-green);
  opacity: 1;
}

/* ── Main Content ────────────────────────────────────────────────── */
.main-wrapper {
  margin-left: var(--hl-sidebar-w);
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

.main-content {
  flex: 1;
  padding: 40px 48px;
}

/* Dark map-style grid background for content area */
.main-content--grid {
  background-image:
    linear-gradient(var(--hl-grid-color) 1px, transparent 1px),
    linear-gradient(90deg, var(--hl-grid-color) 1px, transparent 1px);
  background-size: 40px 40px;
  background-color: var(--hl-bg);
}

/* ── Page headings ───────────────────────────────────────────────── */

/* Section label row: numbered badge + title (matches guide) */
.page-label {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 8px;
}

.page-num {
  width: 26px;
  height: 26px;
  background: rgba(144, 238, 144, 0.08);
  border: 1px solid rgba(144, 238, 144, 0.25);
  border-radius: 3px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 11px;
  font-weight: 700;
  color: var(--hl-green);
  flex-shrink: 0;
  font-family: var(--font);
}

.page-title {
  font-family: var(--font);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--hl-white);
  margin-bottom: 8px;
  letter-spacing: -0.3px;
}

/* Two-tone: first/key word in green, rest white */
.page-title span {
  color: var(--hl-green);
}

.page-subtitle {
  font-size: 0.875rem;
  color: var(--hl-grey);
  margin-bottom: 28px;
  line-height: 1.7;
}

.divider {
  border: none;
  border-top: 1px solid var(--hl-border);
  margin: 24px 0;
}

/* ── Cards ───────────────────────────────────────────────────────── */
/* Legacy selector for transition, site will move to .hl-card */
.card {
  margin-bottom: 24px;
}

.card__title {
  font-family: var(--font);
  font-size: 0.92rem;
  font-weight: 700;
  color: var(--hl-white);
  margin-bottom: 8px;
  letter-spacing: 0.1px;
}

/* Leading accent word in green within card title */
.card__title span {
  color: var(--hl-green);
}

.card__body {
  font-size: 0.875rem;
  color: #909090;
  line-height: 1.8;
}

/* ── Terminal / code blocks ──────────────────────────────────────── */
.terminal {
  margin-bottom: 16px;
}

.terminal .prompt {
  color: var(--hl-grey);
}

/* ── Footer ──────────────────────────────────────────────────────── */
.footer {
  text-align: center;
  padding: 16px;
  border-top: 1px solid var(--hl-border);
  font-size: 0.78rem;
  color: var(--hl-green);
  letter-spacing: 0.06em;
}

/* ── Scrollbar ───────────────────────────────────────────────────── */
::-webkit-scrollbar {
  width: 6px;
}
::-webkit-scrollbar-track {
  background: var(--hl-bg);
}
::-webkit-scrollbar-thumb {
  background: var(--hl-border);
  border-radius: 3px;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--hl-grey);
}

/* ── Utility ─────────────────────────────────────────────────────── */
.text-green  { color: var(--hl-green); }
.text-grey   { color: var(--hl-grey);  }
.text-white  { color: var(--hl-white); }
.mt-16       { margin-top: 16px; }
.mt-32       { margin-top: 32px; }
.mb-16       { margin-bottom: 16px; }
.mb-32       { margin-bottom: 32px; }

/* ── 404 page specifics ──────────────────────────────────────────── */
.error-page {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 80vh;
  text-align: center;
  flex-direction: column;
  gap: 16px;
}

.error-code {
  font-size: 6rem;
  font-weight: 700;
  color: var(--hl-green);
  line-height: 1;
  letter-spacing: -0.04em;
}

.error-label {
  font-size: 0.7rem;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--hl-grey);
}

.error-msg {
  font-size: 1.1rem;
  color: #b0b0b0;
  max-width: 400px;
}

.btn {
  display: inline-block;
  padding: 10px 24px;
  border: 1px solid var(--hl-green);
  border-radius: 4px;
  color: var(--hl-green);
  font-size: 0.85rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  transition: background 0.2s, color 0.2s;
  margin-top: 8px;
}

.btn:hover {
  background: var(--hl-green);
  color: var(--hl-bg);
}

/* ══════════════════════════════════════════════════════════════════
   MOBILE RESPONSIVE
   Breakpoint: 768px
══════════════════════════════════════════════════════════════════ */

/* ── Mobile top bar ──────────────────────────────────────────────── */
.mobile-bar {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 52px;
  background: var(--hl-sidebar);
  border-bottom: 1px solid var(--hl-border);
  align-items: center;
  justify-content: space-between;
  padding: 0 16px;
  z-index: 200;
}

.mobile-bar__brand {
  font-size: 1.2rem;
  font-weight: 700;
  letter-spacing: 0.04em;
}

.mobile-bar__brand .hasty { color: var(--hl-green); }
.mobile-bar__brand .labs  { color: var(--hl-white); }

/* ── Hamburger button ────────────────────────────────────────────── */
.hamburger {
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
  display: flex;
  flex-direction: column;
  gap: 5px;
  border-radius: 4px;
  transition: background 0.2s;
}

.hamburger:hover {
  background: rgba(144, 238, 144, 0.08);
}

.hamburger__bar {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--hl-white);
  border-radius: 2px;
  transition: transform 0.25s, opacity 0.25s;
}

/* X state */
.hamburger.is-open .hamburger__bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.hamburger.is-open .hamburger__bar:nth-child(2) {
  opacity: 0;
}
.hamburger.is-open .hamburger__bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ── Sidebar overlay (mobile) ────────────────────────────────────── */
.sidebar-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  z-index: 150;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s;
}

.sidebar-overlay.is-visible {
  opacity: 1;
  pointer-events: auto;
}

/* ── Media query ─────────────────────────────────────────────────── */
@media (max-width: 768px) {

  /* Show the mobile top bar */
  .mobile-bar {
    display: flex;
  }

  /* Show the overlay element (pointer-events controlled by .is-visible) */
  .sidebar-overlay {
    display: block;
  }

  /* Sidebar becomes a slide-in drawer */
  .sidebar {
    transform: translateX(-100%);
    transition: transform 0.25s ease;
    z-index: 160;
    top: 0;
    width: 260px;
  }

  .sidebar.is-open {
    transform: translateX(0);
  }

  /* Content fills full width; add top padding for the mobile bar */
  .main-wrapper {
    margin-left: 0;
    padding-top: 52px;
  }

  /* Tighten content padding on small screens */
  .main-content {
    padding: 20px 14px;
  }

  /* Shrink page title on mobile */
  .page-title {
    font-size: 1.25rem;
    letter-spacing: -0.2px;
  }

  .page-subtitle {
    font-size: 0.82rem;
    margin-bottom: 20px;
  }

  /* Cards full-width */
  .card {
    padding: 14px;
    margin-bottom: 10px;
  }

  .card__title {
    font-size: 0.85rem;
  }

  .card__body {
    font-size: 0.82rem;
  }

  /* Terminal overflow on mobile */
  .terminal {
    font-size: 0.75rem;
    padding: 12px 14px;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    word-break: break-all;
  }

  /* Buttons stack vertically and fill width */
  .btn {
    display: block;
    width: 100%;
    text-align: center;
    padding: 12px 16px;
    margin-top: 10px;
    font-size: 0.8rem;
  }

  /* Error page on mobile */
  .error-code {
    font-size: 4rem;
  }

  .error-msg {
    font-size: 0.95rem;
    padding: 0 8px;
  }

  /* Footer */
  .footer {
    font-size: 0.72rem;
    padding: 12px;
  }

  /* Divider tighter */
  .divider {
    margin: 16px 0;
  }
}

/* Extra small screens */
@media (max-width: 380px) {
  .sidebar__brand-name {
    font-size: 1.3rem;
  }

  .mobile-bar__brand {
    font-size: 1rem;
  }

  .page-title {
    font-size: 1.1rem;
  }
}