/* ==========================================================================
   PURO AI — Design System
   Shared tokens + primitive styles used across every page.
   --------------------------------------------------------------------------
   Usage: <link rel="stylesheet" href="puro.css">
   ========================================================================== */

*, *::before, *::after { box-sizing: border-box; }
.puro-page, .puro-page *, .puro-page *::before, .puro-page *::after { margin: 0; padding: 0; }


:root {
  /* Surfaces */
  --bg-0: #0a0e1a;      /* page */
  --bg-1: #0f172a;      /* raised */
  --bg-2: #111827;      /* card alt */
  --bg-code: #020617;   /* code canvas */

  /* Borders */
  --border:    #1e293b;
  --border-2:  #334155;
  --border-3:  #475569;

  /* Text */
  --text-0: #f8fafc;    /* primary */
  --text-1: #cbd5e1;    /* body */
  --text-2: #94a3b8;    /* muted */
  --text-3: #64748b;    /* hint */

  /* Accents */
  --cyan:     #22d3ee;
  --cyan-2:   #67e8f9;
  --cyan-dim: #0891b2;
  --purple:   #a855f7;
  --amber:    #fbbf24;
  --green:    #34d399;
  --red:      #f87171;
  --orange:   #fb923c;

  /* Provider brand dots */
  --p-claude: #d97757;
  --p-gpt:    #10a37f;
  --p-gemini: #4285f4;
  --p-codex:  #f0a030;

  /* Radius */
  --r-sm: 6px;
  --r-md: 8px;
  --r-lg: 12px;
  --r-xl: 16px;

  /* Shadow */
  --shadow-lg: 0 30px 60px -30px rgba(0,0,0,0.6);
  --shadow-xl: 0 40px 80px -40px rgba(0,0,0,0.8);

  /* Typography */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, monospace;
}
/* Merged from original html/body rules — applied to .puro-page container root */
.puro-page {
  background: var(--bg-0);
  color: var(--text-0);
  font-family: var(--font-sans);
  font-feature-settings: "cv11", "ss01", "ss03";
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  line-height: 1.5;
  overflow-x: hidden;
}



.puro-page a { color: inherit; text-decoration: none; }
.puro-page button { font-family: inherit; cursor: pointer; border: none; background: none; color: inherit; }

/* scrollbar — subtle */
.puro-page::-webkit-scrollbar { width: 10px; height: 10px; }
.puro-page::-webkit-scrollbar-track { background: transparent; }
.puro-page::-webkit-scrollbar-thumb { background: var(--border-2); border-radius: 6px; }
.puro-page::-webkit-scrollbar-thumb:hover { background: var(--border-3); }

.puro-page .mono { font-family: var(--font-mono); }

/* ==========================================================================
   BACKGROUND EFFECTS
   ========================================================================== */
.puro-page .bg-glow {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
}
.bg-glow::before,
.puro-page .bg-glow::after {
  content: "";
  position: absolute;
  width: 900px;
  height: 900px;
  border-radius: 50%;
  filter: blur(120px);
  opacity: 0.35;
}
.puro-page .bg-glow::before {
  background: radial-gradient(circle, #22d3ee 0%, transparent 60%);
  top: -300px;
  left: -200px;
}
.puro-page .bg-glow::after {
  background: radial-gradient(circle, #a855f7 0%, transparent 60%);
  top: 200px;
  right: -300px;
  opacity: 0.25;
}
.puro-page .bg-glow.soft::before, .puro-page .bg-glow.soft::after { opacity: 0.15; }

.puro-page .grain {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 1;
  opacity: 0.4;
  mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='200' height='200'><filter id='n'><feTurbulence baseFrequency='0.9' numOctaves='2'/></filter><rect width='100%25' height='100%25' filter='url(%23n)' opacity='0.35'/></svg>");
}

.puro-page .container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 32px;
  position: relative;
  z-index: 2;
}
.puro-page .container-wide { max-width: 1280px; }
.puro-page .container-narrow { max-width: 860px; }

/* ==========================================================================
   NAV
   ========================================================================== */
.puro-page .nav {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(16px);
  background: rgba(10, 14, 26, 0.72);
  border-bottom: 1px solid var(--border);
}
.puro-page .nav-inner {
  display: flex;
  align-items: center;
  height: 64px;
  gap: 48px;
}
.puro-page .brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 15px;
  letter-spacing: 0.02em;
}
.puro-page .hex {
  width: 22px;
  height: 22px;
  color: var(--cyan);
}
.puro-page .nav-links {
  display: flex;
  gap: 28px;
  font-size: 14px;
  color: var(--text-2);
}
.puro-page .nav-links a { transition: color .15s; }
.puro-page .nav-links a:hover, .puro-page .nav-links a.active { color: var(--text-0); }
.puro-page .nav-links .disabled { color: var(--text-3); cursor: not-allowed; display: inline-flex; align-items: center; gap: 6px; }
.puro-page .nav-links .disabled::after {
  content: "即将推出";
  font-size: 10px;
  padding: 2px 6px;
  border: 1px solid var(--border-2);
  border-radius: 4px;
  color: var(--text-3);
}
.puro-page .nav-cta {
  margin-left: auto;
  display: flex;
  gap: 10px;
  align-items: center;
}

/* ==========================================================================
   BUTTONS
   ========================================================================== */
.puro-page .btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 8px 14px;
  font-size: 13px;
  font-weight: 500;
  border-radius: var(--r-md);
  transition: all .15s;
  white-space: nowrap;
  border: 1px solid transparent;
}
.puro-page .btn-primary {
  background: var(--cyan);
  color: #042f2e;
  font-weight: 600;
}
.puro-page .btn-primary:hover { background: var(--cyan-2); }
.puro-page .btn-primary:active { transform: translateY(1px); }
.puro-page .btn-primary:disabled { opacity: 0.5; cursor: not-allowed; }

.puro-page .btn-ghost {
  border-color: var(--border-2);
  color: var(--text-1);
}
.puro-page .btn-ghost:hover { border-color: var(--border-3); color: var(--text-0); background: rgba(255,255,255,0.02); }

.puro-page .btn-subtle {
  background: rgba(255,255,255,0.04);
  color: var(--text-1);
  border-color: transparent;
}
.puro-page .btn-subtle:hover { background: rgba(255,255,255,0.08); color: var(--text-0); }

.puro-page .btn-danger {
  background: rgba(248, 113, 113, 0.1);
  color: var(--red);
  border-color: rgba(248, 113, 113, 0.25);
}
.puro-page .btn-danger:hover { background: rgba(248, 113, 113, 0.15); border-color: rgba(248, 113, 113, 0.4); }

.puro-page .btn-lg { padding: 12px 20px; font-size: 14px; }
.puro-page .btn-sm { padding: 5px 10px; font-size: 12px; }
.puro-page .btn-icon { padding: 7px; aspect-ratio: 1; }

.puro-page .btn .spinner {
  width: 14px; height: 14px;
  border: 2px solid rgba(0,0,0,0.2);
  border-top-color: currentColor;
  border-radius: 50%;
  animation: spin .7s linear infinite;
  display: none;
}
.puro-page .btn.loading .spinner { display: inline-block; }
.puro-page .btn.loading .label { opacity: 0.5; }
@keyframes spin { to { transform: rotate(360deg); } }

/* ==========================================================================
   BADGES / PILLS / CHIPS
   ========================================================================== */
.puro-page .badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 2px 8px;
  border-radius: 100px;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.02em;
  background: rgba(34, 211, 238, 0.1);
  color: var(--cyan);
}
.puro-page .badge.amber { background: rgba(251, 191, 36, 0.12); color: var(--amber); }
.puro-page .badge.purple { background: rgba(168, 85, 247, 0.12); color: var(--purple); }
.puro-page .badge.green { background: rgba(52, 211, 153, 0.12); color: var(--green); }
.puro-page .badge.red { background: rgba(248, 113, 113, 0.12); color: var(--red); }
.puro-page .badge.muted { background: rgba(255, 255, 255, 0.04); color: var(--text-2); border: 1px solid var(--border); }

.puro-page .pill {
  display: inline-block;
  padding: 2px 8px;
  border-radius: var(--r-sm);
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--border);
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-0);
}

.puro-page .chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border-radius: 100px;
  background: rgba(15, 23, 42, 0.6);
  border: 1px solid var(--border);
  font-size: 12px;
  color: var(--text-1);
  font-family: var(--font-mono);
}
.puro-page .chip .dot { width: 6px; height: 6px; border-radius: 50%; background: var(--green); }
.puro-page .chip.claude .dot { background: var(--p-claude); }
.puro-page .chip.gpt .dot { background: var(--p-gpt); }
.puro-page .chip.gemini .dot { background: var(--p-gemini); }
.puro-page .chip.codex .dot { background: var(--p-codex); }

.puro-page .dot-sep { width: 4px; height: 4px; border-radius: 50%; background: var(--text-3); display: inline-block; }

/* status chip (tiny dot absolute-positioned) */
.puro-page .status-chip {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 0 3px rgba(52, 211, 153, 0.15);
  display: inline-block;
}
.puro-page .status-chip.dim { background: var(--text-3); box-shadow: none; }
.puro-page .status-chip.amber { background: var(--amber); box-shadow: 0 0 0 3px rgba(251, 191, 36, 0.15); }
.puro-page .status-chip.red { background: var(--red); box-shadow: 0 0 0 3px rgba(248, 113, 113, 0.15); }

/* ==========================================================================
   CARDS / SURFACES
   ========================================================================== */
.puro-page .card {
  background: rgba(15, 23, 42, 0.6);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  padding: 24px;
}
.puro-page .card-raised {
  background: var(--bg-1);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
}
.puro-page .card-interactive {
  transition: all .2s;
  cursor: pointer;
}
.puro-page .card-interactive:hover {
  border-color: var(--border-2);
  background: rgba(15, 23, 42, 0.85);
  transform: translateY(-2px);
}

.puro-page .divider { height: 1px; background: var(--border); margin: 24px 0; border: 0; }
.puro-page .divider-dashed { border: 0; border-top: 1px dashed var(--border); margin: 20px 0; }

/* ==========================================================================
   FORMS
   ========================================================================== */
.puro-page .field { margin-bottom: 18px; }
.puro-page .field-label {
  display: block;
  font-size: 12px;
  font-weight: 500;
  color: var(--text-1);
  margin-bottom: 8px;
}
.puro-page .field-hint {
  font-size: 12px;
  color: var(--text-3);
  margin-top: 6px;
}
.puro-page .field-error {
  font-size: 12px;
  color: var(--red);
  margin-top: 6px;
}

.puro-page .input-wrap { position: relative; }
.puro-page .input-wrap .icon {
  position: absolute;
  left: 14px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-3);
  pointer-events: none;
  display: inline-flex;
}
.puro-page .input {
  width: 100%;
  height: 42px;
  padding: 0 14px;
  background: rgba(15, 23, 42, 0.6);
  border: 1px solid var(--border-2);
  border-radius: var(--r-md);
  color: var(--text-0);
  font-size: 14px;
  font-family: inherit;
  outline: none;
  transition: all .15s;
}
.puro-page .input.with-icon { padding-left: 40px; }
.puro-page .input::placeholder { color: var(--text-3); }
.puro-page .input:hover { border-color: var(--border-3); }
.puro-page .input:focus {
  border-color: var(--cyan);
  box-shadow: 0 0 0 3px rgba(34, 211, 238, 0.12);
  background: rgba(15, 23, 42, 0.9);
}
.puro-page .input.ok { border-color: rgba(52, 211, 153, 0.4); }
.puro-page .input.ok:focus { box-shadow: 0 0 0 3px rgba(52, 211, 153, 0.12); }
.puro-page .input.error { border-color: var(--red); }
.puro-page .input.error:focus { box-shadow: 0 0 0 3px rgba(248, 113, 113, 0.12); }

.puro-page textarea.input { height: auto; padding: 12px 14px; resize: vertical; line-height: 1.5; }

.puro-page select.input {
  appearance: none;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%2394a3b8' stroke-width='2.5' stroke-linecap='round' stroke-linejoin='round'><path d='M6 9l6 6 6-6'/></svg>");
  background-repeat: no-repeat;
  background-position: right 14px center;
  padding-right: 36px;
}

/* checkbox */
.puro-page .check {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  cursor: pointer;
  user-select: none;
  font-size: 13px;
  color: var(--text-1);
}
.puro-page .check input { display: none; }
.puro-page .check .box {
  width: 16px; height: 16px;
  border: 1px solid var(--border-2);
  border-radius: 4px;
  background: var(--bg-1);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: all .15s;
  flex-shrink: 0;
}
.puro-page .check input:checked + .box {
  background: var(--cyan);
  border-color: var(--cyan);
}
.puro-page .check input:checked + .box::after {
  content: "✓";
  color: #042f2e;
  font-size: 11px;
  font-weight: 700;
}

/* ==========================================================================
   SECTION HEADINGS
   ========================================================================== */
.puro-page .section-kicker {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--cyan);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-bottom: 12px;
}
.puro-page .section-title {
  font-size: clamp(28px, 3.5vw, 40px);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.15;
  margin-bottom: 16px;
}
.puro-page .section-sub {
  color: var(--text-2);
  font-size: 16px;
  line-height: 1.6;
}

/* ==========================================================================
   TABLES
   ========================================================================== */
.puro-page .tbl {
  width: 100%;
  font-size: 13px;
  border-collapse: collapse;
}
.puro-page .tbl th {
  text-align: left;
  color: var(--text-3);
  font-weight: 500;
  padding: 12px 14px;
  border-bottom: 1px solid var(--border);
  text-transform: uppercase;
  font-size: 10px;
  letter-spacing: 0.1em;
}
.puro-page .tbl td {
  padding: 14px;
  border-bottom: 1px solid rgba(30, 41, 59, 0.5);
  color: var(--text-1);
}
.puro-page .tbl tr:last-child td { border-bottom: none; }
.puro-page .tbl tr:hover td { background: rgba(15, 23, 42, 0.4); }
.puro-page .tbl td.mono, .puro-page .tbl th.mono { font-family: var(--font-mono); }

/* ==========================================================================
   CODE BLOCKS
   ========================================================================== */
.puro-page .code-frame {
  background: var(--bg-code);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}
.puro-page .code-head {
  display: flex;
  align-items: center;
  height: 40px;
  padding: 0 16px;
  border-bottom: 1px solid var(--border);
  background: rgba(15, 23, 42, 0.8);
  gap: 10px;
}
.puro-page .traffic {
  display: flex;
  gap: 6px;
}
.puro-page .traffic span {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: #475569;
}
.puro-page .code-body {
  padding: 22px 26px;
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.75;
  color: var(--text-1);
  overflow-x: auto;
}
.puro-page .code-body .line { display: flex; gap: 20px; }
.puro-page .ln { color: var(--text-3); user-select: none; min-width: 16px; text-align: right; opacity: 0.5; }

/* syntax */
.puro-page .kw { color: #c084fc; }
.puro-page .str { color: #86efac; }
.puro-page .num { color: #fbbf24; }
.puro-page .com { color: #64748b; font-style: italic; }
.puro-page .fn { color: #22d3ee; }
.puro-page .prop { color: #f0abfc; }
.puro-page .var-v { color: #f8fafc; }
.puro-page .flag { color: #fb923c; }
.puro-page .bash-prompt { color: var(--cyan); user-select: none; }

/* ==========================================================================
   PROVIDER-BRAND HELPERS
   ========================================================================== */
.puro-page .provider {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 12px;
}
.puro-page .provider .dot { width: 6px; height: 6px; border-radius: 50%; }
.puro-page .provider.claude .dot { background: var(--p-claude); }
.puro-page .provider.gpt    .dot { background: var(--p-gpt); }
.puro-page .provider.gemini .dot { background: var(--p-gemini); }
.puro-page .provider.codex  .dot { background: var(--p-codex); }

/* ==========================================================================
   UTILITIES
   ========================================================================== */
.puro-page .stack-xs { display: flex; flex-direction: column; gap: 8px; }
.puro-page .stack-sm { display: flex; flex-direction: column; gap: 12px; }
.puro-page .stack-md { display: flex; flex-direction: column; gap: 20px; }
.puro-page .stack-lg { display: flex; flex-direction: column; gap: 32px; }

.puro-page .row { display: flex; align-items: center; gap: 12px; }
.puro-page .row-sm { gap: 8px; }
.puro-page .row-lg { gap: 20px; }
.puro-page .row-between { justify-content: space-between; }
.puro-page .row-center { justify-content: center; }
.puro-page .row-wrap { flex-wrap: wrap; }

.puro-page .flex-1 { flex: 1; }
.puro-page .ml-auto { margin-left: auto; }
.puro-page .mt-auto { margin-top: auto; }

.puro-page .text-0 { color: var(--text-0); }
.puro-page .text-1 { color: var(--text-1); }
.puro-page .text-2 { color: var(--text-2); }
.puro-page .text-3 { color: var(--text-3); }
.puro-page .text-cyan { color: var(--cyan); }
.puro-page .text-purple { color: var(--purple); }
.puro-page .text-amber { color: var(--amber); }
.puro-page .text-green { color: var(--green); }
.puro-page .text-red { color: var(--red); }

.puro-page .text-xs { font-size: 11px; }
.puro-page .text-sm { font-size: 13px; }
.puro-page .text-md { font-size: 14px; }
.puro-page .text-lg { font-size: 16px; }
.puro-page .text-xl { font-size: 20px; }
.puro-page .text-2xl { font-size: 28px; }
.puro-page .text-3xl { font-size: 36px; }

.puro-page .fw-400 { font-weight: 400; }
.puro-page .fw-500 { font-weight: 500; }
.puro-page .fw-600 { font-weight: 600; }
.puro-page .fw-700 { font-weight: 700; }
.puro-page .fw-800 { font-weight: 800; }

.puro-page .tabular { font-variant-numeric: tabular-nums; }
.puro-page .truncate { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

/* ==========================================================================
   APP SHELL (for dashboard-style pages)
   ========================================================================== */
.puro-page .app-shell {
  display: grid;
  grid-template-columns: 240px 1fr;
  min-height: 100vh;
  position: relative;
  z-index: 2;
}
.puro-page .app-side {
  border-right: 1px solid var(--border);
  background: rgba(2, 6, 23, 0.6);
  padding: 20px 14px;
  display: flex;
  flex-direction: column;
  gap: 28px;
  position: sticky;
  top: 0;
  height: 100vh;
  overflow-y: auto;
}
.puro-page .app-side .brand { padding: 6px 10px 14px; }
.puro-page .side-group { display: flex; flex-direction: column; gap: 2px; }
.puro-page .side-label {
  font-size: 10px;
  color: var(--text-3);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  padding: 0 10px 8px;
  font-family: var(--font-mono);
}
.puro-page .side-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 10px;
  border-radius: var(--r-sm);
  font-size: 13px;
  color: var(--text-2);
  cursor: pointer;
  transition: all .12s;
}
.puro-page .side-item:hover { color: var(--text-0); background: rgba(255,255,255,0.03); }
.puro-page .side-item.active { background: rgba(34, 211, 238, 0.08); color: var(--cyan); }
.puro-page .side-item .ico {
  width: 16px; height: 16px; opacity: 0.8;
  display: inline-flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}
.puro-page .side-item .count {
  margin-left: auto;
  font-size: 11px;
  color: var(--text-3);
  font-family: var(--font-mono);
}
.puro-page .side-item.active .count { color: var(--cyan); }

.puro-page .app-main {
  min-width: 0; /* allow grid children to shrink */
  display: flex;
  flex-direction: column;
}
.puro-page .app-topbar {
  height: 60px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  padding: 0 32px;
  gap: 16px;
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(10, 14, 26, 0.75);
  backdrop-filter: blur(12px);
}
.puro-page .app-topbar h1 {
  font-size: 18px;
  font-weight: 600;
  letter-spacing: -0.01em;
}
.puro-page .app-content {
  padding: 32px;
  flex: 1;
}

/* user avatar pill */
.puro-page .avatar {
  width: 28px; height: 28px;
  border-radius: 50%;
  background: linear-gradient(135deg, #22d3ee, #a855f7);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: #042f2e;
  font-weight: 700;
  font-size: 12px;
  flex-shrink: 0;
}

/* ==========================================================================
   KBD
   ========================================================================== */
.puro-page kbd {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 20px;
  height: 20px;
  padding: 0 6px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  color: var(--text-1);
  background: var(--bg-1);
  border: 1px solid var(--border-2);
  border-bottom-width: 2px;
  border-radius: 4px;
  line-height: 1;
}