/* ================================================================
   THEME.CSS — Toolbox Design System v2
   Aesthetic: Neo-brutalist editorial. Paper & ink, hard shadows,
   thick borders, electric cobalt + acid lime accents.
   No glassmorphism. No blur. Bold typography.
   ================================================================ */

@import url("https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@400;500;600;700&family=JetBrains+Mono:wght@400;500;700&display=swap");

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

/* ================================================================
   1. DESIGN TOKENS
   ================================================================ */
:root {
  /* Surface — warm paper */
  --bg:              #f2efe6;
  --bg-subtle:       #e9e5d8;
  --bg-card:         #faf8f0;
  --bg-elevated:     #fffdf6;
  --bg-inset:        #eae6d9;

  /* Ink & paper primitives */
  --ink:             #161410;
  --paper:           #f2efe6;

  /* Text */
  --text-primary:    #161410;
  --text-secondary:  #45413a;
  --text-tertiary:   #6e6a5e;
  --text-muted:      #8f8a7b;

  /* Border — visible, structural */
  --border:          rgba(22, 20, 16, 0.28);
  --border-hover:    rgba(22, 20, 16, 0.55);
  --border-active:   rgba(22, 20, 16, 0.85);
  --border-ink:      #161410;

  /* Accent — electric cobalt */
  --accent:          #2c41ff;
  --accent-soft:     rgba(44, 65, 255, 0.08);
  --accent-glow:     rgba(44, 65, 255, 0.25);
  --accent-text:     #2334db;

  /* Pop — acid lime (highlights, markers, cursors) */
  --pop:             #c9f73a;
  --pop-soft:        rgba(201, 247, 58, 0.25);
  --pop-ink:         #161410;

  /* Semantic */
  --green:           #1b9e4b;
  --green-soft:      rgba(27, 158, 75, 0.12);
  --red:             #e03131;
  --red-soft:        rgba(224, 49, 49, 0.10);
  --orange:          #e8590c;
  --orange-soft:     rgba(232, 89, 12, 0.10);

  /* Shadow — hard offset, no blur */
  --shadow-xs:       2px 2px 0 rgba(22, 20, 16, 0.9);
  --shadow-sm:       3px 3px 0 rgba(22, 20, 16, 0.9);
  --shadow-md:       4px 4px 0 rgba(22, 20, 16, 0.9);
  --shadow-lg:       6px 6px 0 rgba(22, 20, 16, 0.9);
  --shadow-xl:       9px 9px 0 rgba(22, 20, 16, 0.9);

  /* Glass tokens kept for compat — resolved to SOLID surfaces */
  --glass-bg:        #faf8f0;
  --glass-border:    rgba(22, 20, 16, 0.28);
  --glass-blur:      0px;

  /* Radius — sharp-ish */
  --r-sm:            4px;
  --r-md:            6px;
  --r-lg:            8px;
  --r-xl:            10px;
  --r-2xl:           12px;
  --r-full:          9999px;

  /* Spacing scale */
  --space-xs:        4px;
  --space-sm:        8px;
  --space-md:        16px;
  --space-lg:        24px;
  --space-xl:        32px;
  --space-2xl:       48px;
  --space-3xl:       64px;

  /* Typography */
  --font-sans:       "Space Grotesk", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, sans-serif;
  --font-mono:       "JetBrains Mono", "Fira Code", ui-monospace, monospace;
  --font-display:    "Space Grotesk", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;

  /* Transition */
  --ease-out:        cubic-bezier(0.16, 1, 0.3, 1);
  --ease-spring:     cubic-bezier(0.34, 1.56, 0.64, 1);
  --ease-snap:       cubic-bezier(0.7, 0, 0.2, 1);
  --dur-fast:        0.14s;
  --dur-normal:      0.22s;
  --dur-slow:        0.38s;
}

/* ================================================================
   2. DARK MODE — warm ink, phosphor lime
   ================================================================ */
html[data-theme="dark"] {
  --bg:              #14120c;
  --bg-subtle:       #1b1812;
  --bg-card:         #1d1a13;
  --bg-elevated:     #262217;
  --bg-inset:        #181510;

  --ink:             #f0ecdd;
  --paper:           #14120c;

  --text-primary:    #f0ecdd;
  --text-secondary:  #c2bda9;
  --text-tertiary:   #8f8a78;
  --text-muted:      #6e6a5c;

  --border:          rgba(240, 236, 221, 0.22);
  --border-hover:    rgba(240, 236, 221, 0.45);
  --border-active:   rgba(240, 236, 221, 0.75);
  --border-ink:      #f0ecdd;

  --accent:          #6577ff;
  --accent-soft:     rgba(101, 119, 255, 0.13);
  --accent-glow:     rgba(101, 119, 255, 0.35);
  --accent-text:     #8b99ff;

  --pop:             #d8ff4a;
  --pop-soft:        rgba(216, 255, 74, 0.16);
  --pop-ink:         #14120c;

  --green:           #4ade80;
  --green-soft:      rgba(74, 222, 128, 0.12);
  --red:             #ff6b6b;
  --red-soft:        rgba(255, 107, 107, 0.12);
  --orange:          #ff922b;
  --orange-soft:     rgba(255, 146, 43, 0.12);

  --shadow-xs:       2px 2px 0 rgba(0, 0, 0, 0.85);
  --shadow-sm:       3px 3px 0 rgba(0, 0, 0, 0.85);
  --shadow-md:       4px 4px 0 rgba(0, 0, 0, 0.85);
  --shadow-lg:       6px 6px 0 rgba(0, 0, 0, 0.85);
  --shadow-xl:       9px 9px 0 rgba(0, 0, 0, 0.85);

  --glass-bg:        #1d1a13;
  --glass-border:    rgba(240, 236, 221, 0.22);
}

@media (prefers-color-scheme: dark) {
  html:not([data-theme="light"]) {
    --bg:              #14120c;
    --bg-subtle:       #1b1812;
    --bg-card:         #1d1a13;
    --bg-elevated:     #262217;
    --bg-inset:        #181510;
    --ink:             #f0ecdd;
    --paper:           #14120c;
    --text-primary:    #f0ecdd;
    --text-secondary:  #c2bda9;
    --text-tertiary:   #8f8a78;
    --text-muted:      #6e6a5c;
    --border:          rgba(240, 236, 221, 0.22);
    --border-hover:    rgba(240, 236, 221, 0.45);
    --border-active:   rgba(240, 236, 221, 0.75);
    --border-ink:      #f0ecdd;
    --accent:          #6577ff;
    --accent-soft:     rgba(101, 119, 255, 0.13);
    --accent-glow:     rgba(101, 119, 255, 0.35);
    --accent-text:     #8b99ff;
    --pop:             #d8ff4a;
    --pop-soft:        rgba(216, 255, 74, 0.16);
    --pop-ink:         #14120c;
    --green:           #4ade80;
    --green-soft:      rgba(74, 222, 128, 0.12);
    --red:             #ff6b6b;
    --red-soft:        rgba(255, 107, 107, 0.12);
    --orange:          #ff922b;
    --orange-soft:     rgba(255, 146, 43, 0.12);
    --shadow-xs:       2px 2px 0 rgba(0, 0, 0, 0.85);
    --shadow-sm:       3px 3px 0 rgba(0, 0, 0, 0.85);
    --shadow-md:       4px 4px 0 rgba(0, 0, 0, 0.85);
    --shadow-lg:       6px 6px 0 rgba(0, 0, 0, 0.85);
    --shadow-xl:       9px 9px 0 rgba(0, 0, 0, 0.85);
    --glass-bg:        #1d1a13;
    --glass-border:    rgba(240, 236, 221, 0.22);
  }
}

/* ================================================================
   3. BASE / TYPOGRAPHY
   ================================================================ */
html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--text-primary);
  line-height: 1.6;
  transition: background var(--dur-slow) var(--ease-out),
              color var(--dur-slow) var(--ease-out);
}

a { color: var(--accent-text); text-decoration: none; transition: color var(--dur-fast); }
a:hover { color: var(--accent); }

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

::selection { background: var(--pop); color: var(--pop-ink); }

/* Paper texture — subtle dot grid on body via helper class */
.paper-grid {
  background-image: radial-gradient(circle, var(--border) 1px, transparent 1px);
  background-size: 28px 28px;
}

/* ================================================================
   4. COMPONENT CLASSES
   ================================================================ */

/* ---- Panels (glass classes kept for compat — now solid ink-framed) ---- */
.glass,
.glass-strong {
  background: var(--bg-card);
  border: 1.5px solid var(--border-ink);
  box-shadow: var(--shadow-md);
}

/* ---- Card ---- */
.card {
  background: var(--bg-card);
  border: 1.5px solid var(--border-ink);
  border-radius: var(--r-lg);
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--dur-normal) var(--ease-snap),
              transform var(--dur-normal) var(--ease-snap);
}

.card:hover { box-shadow: var(--shadow-md); }

.card-interactive:hover {
  transform: translate(-2px, -2px);
  box-shadow: var(--shadow-lg);
}
.card-interactive:active {
  transform: translate(1px, 1px);
  box-shadow: var(--shadow-xs);
}

/* ---- Buttons ---- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 8px 16px;
  border-radius: var(--r-md);
  font-size: 0.8rem;
  font-weight: 600;
  font-family: var(--font-sans);
  cursor: pointer;
  border: 1.5px solid var(--border-ink);
  background: var(--bg-card);
  color: var(--text-primary);
  box-shadow: var(--shadow-xs);
  transition: transform var(--dur-fast) var(--ease-snap),
              box-shadow var(--dur-fast) var(--ease-snap),
              background var(--dur-fast);
  user-select: none;
  white-space: nowrap;
}

.btn:hover {
  transform: translate(-1px, -1px);
  box-shadow: var(--shadow-sm);
  background: var(--pop);
  color: var(--pop-ink);
}

.btn:active {
  transform: translate(1px, 1px);
  box-shadow: none;
}

.btn-primary,
.btn-p {
  background: var(--accent);
  color: #fff;
  border-color: var(--border-ink);
}

.btn-primary:hover,
.btn-p:hover {
  background: var(--accent);
  color: #fff;
  transform: translate(-1px, -1px);
  box-shadow: var(--shadow-sm);
}

.btn-primary:active,
.btn-p:active { transform: translate(1px, 1px); box-shadow: none; }

.btn-danger {
  color: var(--red);
  background: var(--bg-card);
}

.btn-danger:hover {
  background: var(--red);
  border-color: var(--border-ink);
  color: #fff;
}

.btn-sm { padding: 5px 10px; font-size: 0.72rem; border-radius: var(--r-sm); }
.btn-xs { padding: 3px 8px; font-size: 0.68rem; border-radius: var(--r-sm); box-shadow: none; }

/* ---- Inputs ---- */
.input {
  width: 100%;
  padding: 10px 14px;
  background: var(--bg-elevated);
  border: 1.5px solid var(--border-ink);
  border-radius: var(--r-md);
  color: var(--text-primary);
  font-size: 0.85rem;
  font-family: var(--font-sans);
  outline: none;
  transition: box-shadow var(--dur-fast), border-color var(--dur-fast);
}

.input::placeholder { color: var(--text-muted); }

.input:focus {
  border-color: var(--accent);
  box-shadow: 3px 3px 0 var(--accent-glow);
}

.input-mono { font-family: var(--font-mono); font-size: 0.82rem; }

textarea.input { resize: none; line-height: 1.6; }

select.input {
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%23161410' stroke-width='2.5'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  padding-right: 32px;
}

/* ---- Tags / Badges ---- */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 2px 8px;
  border-radius: var(--r-sm);
  font-size: 0.62rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  border: 1px solid var(--border-ink);
  color: var(--text-secondary);
  background: var(--bg-card);
  transition: all var(--dur-fast);
}

.badge {
  display: inline-flex;
  align-items: center;
  padding: 2px 8px;
  border-radius: var(--r-sm);
  font-size: 0.62rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  border: 1px solid var(--border-ink);
}

.badge-accent { background: var(--accent); color: #fff; }
.badge-green  { background: var(--green-soft); color: var(--green); }
.badge-red    { background: var(--red-soft); color: var(--red); }
.badge-orange { background: var(--orange-soft); color: var(--orange); }
.badge-pop    { background: var(--pop); color: var(--pop-ink); }

/* ---- Table ---- */
.table-wrap { overflow-x: auto; }

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.8rem;
}

th {
  text-align: left;
  padding: 10px 12px;
  font-weight: 700;
  color: var(--text-primary);
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  border-bottom: 2px solid var(--border-ink);
  font-family: var(--font-mono);
}

td {
  padding: 10px 12px;
  border-bottom: 1px solid var(--border);
  color: var(--text-secondary);
  transition: background var(--dur-fast);
}

tr:hover td { background: var(--pop-soft); }

/* ---- Code Block ---- */
.code-block {
  position: relative;
  background: #1c1a14;
  border: 1.5px solid var(--border-ink);
  border-radius: var(--r-md);
  overflow: hidden;
}

.code-block pre { margin: 0; font-size: 0.82rem; line-height: 1.6; }

.code-block code {
  display: block;
  padding: 14px 48px 14px 14px;
  font-family: var(--font-mono);
  color: #e8e4d4;
  white-space: pre-wrap;
  word-break: break-all;
}

.code-copy {
  position: absolute;
  top: 6px;
  right: 6px;
  background: transparent;
  border: 1px solid rgba(232, 228, 212, 0.3);
  color: rgba(232, 228, 212, 0.6);
  font-size: 0.68rem;
  padding: 2px 8px;
  border-radius: var(--r-sm);
  cursor: pointer;
  transition: all var(--dur-fast);
  font-family: var(--font-mono);
  z-index: 2;
}

.code-copy:hover { background: var(--pop); color: var(--pop-ink); border-color: var(--pop); }

/* ---- Toast ---- */
.toast {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 999;
  background: var(--ink);
  color: var(--paper);
  border: 1.5px solid var(--border-ink);
  padding: 12px 20px;
  border-radius: var(--r-md);
  font-size: 0.82rem;
  font-weight: 600;
  box-shadow: var(--shadow-md);
  opacity: 0;
  transform: translateY(12px);
  transition: all var(--dur-normal) var(--ease-out);
  pointer-events: none;
}

.toast.show { opacity: 1; transform: translateY(0); pointer-events: auto; }

/* ---- Modal ---- */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(22, 20, 16, 0.55);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 200;
}

.modal-overlay.show { display: flex; }

.modal {
  background: var(--bg-card);
  border: 2px solid var(--border-ink);
  border-radius: var(--r-xl);
  padding: 28px;
  width: 90%;
  max-width: 400px;
  box-shadow: var(--shadow-xl);
  animation: modalIn 0.28s var(--ease-out);
}

@keyframes modalIn {
  from { opacity: 0; transform: translateY(16px) scale(0.97); }
  to { opacity: 1; transform: none; }
}

/* ---- Nav Bar ---- */
.nav-bar {
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--bg);
  border-bottom: 1.5px solid transparent;
  transition: border-color var(--dur-normal);
}

.nav-bar.scrolled { border-bottom-color: var(--border-ink); }

/* ---- Scrollbar ---- */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border-hover); border-radius: 0; }
::-webkit-scrollbar-thumb:hover { background: var(--border-ink); }

/* ================================================================
   5. UTILITY CLASSES
   ================================================================ */
.text-primary   { color: var(--text-primary); }
.text-secondary { color: var(--text-secondary); }
.text-tertiary  { color: var(--text-tertiary); }
.text-muted     { color: var(--text-muted); }
.text-accent    { color: var(--accent-text); }
.text-green     { color: var(--green); }
.text-red       { color: var(--red); }
.text-orange    { color: var(--orange); }

.bg-card        { background: var(--bg-card); }
.bg-subtle      { background: var(--bg-subtle); }
.bg-inset       { background: var(--bg-inset); }
.bg-elevated    { background: var(--bg-elevated); }

.border-default { border-color: var(--border); }
.border-hover   { border-color: var(--border-hover); }

/* ================================================================
   6. ANIMATIONS
   ================================================================ */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(16px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes pulseRing {
  0%, 100% { box-shadow: 0 0 0 0 rgba(27, 158, 75, 0.35); }
  50%      { box-shadow: 0 0 0 6px rgba(27, 158, 75, 0); }
}

@keyframes cursorBlink {
  0%, 100% { opacity: 1; }
  50%      { opacity: 0; }
}

@keyframes spin { to { transform: rotate(360deg); } }

@keyframes marqueeScroll {
  from { transform: translateX(0); }
  to   { transform: translateX(-50%); }
}

.fade-in { animation: fadeIn 0.35s var(--ease-out); }

/* ================================================================
   7. AMBIENT BACKGROUND — flat editorial, no glow blobs
   ================================================================ */
.ambient-glow {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background-image: radial-gradient(circle, var(--border) 1px, transparent 1px);
  background-size: 32px 32px;
  opacity: 0.5;
}
.ambient-glow::before, .ambient-glow::after { content: none; }

/* ================================================================
   8. TAILWIND-COMPAT OVERRIDES (tool pages use Tailwind CDN)
   Sharpen radii + frame panels so legacy pages adopt the system
   ================================================================ */
.rounded-lg  { border-radius: var(--r-md) !important; }
.rounded-xl  { border-radius: var(--r-md) !important; }
.rounded-2xl { border-radius: var(--r-lg) !important; }
.rounded-3xl { border-radius: var(--r-xl) !important; }

.shadow-sm, .shadow, .shadow-md { box-shadow: var(--shadow-sm) !important; }
.shadow-lg, .shadow-xl, .shadow-2xl { box-shadow: var(--shadow-md) !important; }

/* ================================================================
   9. RESPONSIVE HELPERS
   ================================================================ */
@media (max-width: 768px) {
  :root {
    --space-lg:  16px;
    --space-xl:  24px;
    --space-2xl: 32px;
    --space-3xl: 48px;
  }
}

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