/* RelaySecret design tokens — AgentDefenders theme.
   Single source of truth; every page imports this first. */

:root {
  /* --- Colors (light) --- */
  --color-bg: #F0EAE0;           /* warm parchment page bg — slightly richer than before */
  --color-surface: #FFFFFF;      /* cards, panels */
  --color-surface-alt: #FAF7F2;  /* inset / nested surfaces (progress bg, code areas) */
  --color-text-primary: #1A1A18; /* headings, body */
  --color-text-muted: #6B6A66;   /* subtext, captions — lifted slightly for readability */
  --color-text-subtle: #9A9894;  /* placeholders, disabled hints */
  --color-accent: #C0392B;       /* brand red — CTA, logo */
  --color-accent-hover: #A5321F;
  --color-accent-subtle: #FBF1EF; /* very light red tint for hover backgrounds */
  --color-border: #E4DDD3;       /* subtle warm-grey dividers */
  --color-border-strong: #C8C0B6; /* stronger border for focused / filled states */
  --color-code-bg: #1E1E1C;      /* terminal dark bg */
  --color-code-syntax: #4A9CE8;  /* curl URL highlight */
  --color-code-frag: #E8843A;    /* fragment highlight */
  --color-success: #2A7A54;
  --color-success-subtle: #EFF8F3; /* light green tint */
  --color-danger: #C0392B;
  --color-danger-subtle: #FBF1EF;
  --color-warning: #C98A1A;
  --color-warning-subtle: #FDF5E6;

  /* --- Typography --- */
  --font-display: Georgia, 'Times New Roman', serif;
  --font-ui: 'Helvetica Neue', Arial, sans-serif;
  --font-mono: 'JetBrains Mono', 'Courier New', monospace;

  /* --- Type scale (modular, ~1.2 ratio) --- */
  --fs-xs:   0.75rem;    /* 12px — micro labels, table headers */
  --fs-sm:   0.875rem;   /* 14px — secondary body, captions */
  --fs-base: 1rem;       /* 16px — default body */
  --fs-lg:   1.125rem;   /* 18px — slightly emphasized body */
  --fs-xl:   1.3125rem;  /* 21px — h3 */
  --fs-2xl:  1.625rem;   /* 26px — h2 */
  --fs-3xl:  2.125rem;   /* 34px — h1 */

  /* --- Spacing (4-pt grid) --- */
  --sp-1:  0.25rem;   /*  4px */
  --sp-2:  0.5rem;    /*  8px */
  --sp-3:  0.75rem;   /* 12px */
  --sp-4:  1rem;      /* 16px */
  --sp-5:  1.25rem;   /* 20px */
  --sp-6:  1.5rem;    /* 24px */
  --sp-8:  2rem;      /* 32px */
  --sp-10: 2.5rem;    /* 40px */
  --sp-12: 3rem;      /* 48px */

  /* --- Radius --- */
  --radius-sm:  4px;
  --radius-md:  8px;
  --radius-lg:  12px;
  --radius-xl:  16px;
  --radius-full: 9999px;

  /* --- Elevation --- */
  --shadow-xs: 0 1px 2px rgba(26,26,24,0.05);
  --shadow-sm: 0 1px 3px rgba(26,26,24,0.08), 0 1px 2px rgba(26,26,24,0.04);
  --shadow-md: 0 4px 16px rgba(26,26,24,0.10), 0 1px 4px rgba(26,26,24,0.06);
  --shadow-lg: 0 12px 40px rgba(26,26,24,0.14), 0 4px 12px rgba(26,26,24,0.08);

  /* --- Transitions --- */
  --t-fast:   0.1s ease;
  --t-base:   0.18s ease;
  --t-slow:   0.3s ease;

  /* --- Layout --- */
  --content-max: 780px;
}

/* --- Base reset --- */
*, *::before, *::after { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  background: var(--color-bg);
  color: var(--color-text-primary);
  font-family: var(--font-ui);
  font-size: var(--fs-base);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
h1, h2, h3 {
  font-family: var(--font-display);
  color: var(--color-text-primary);
  margin: 0 0 var(--sp-4);
  line-height: 1.2;
  letter-spacing: -0.015em;
}
h1 { font-size: var(--fs-3xl); }
h2 { font-size: var(--fs-2xl); }
h3 { font-size: var(--fs-xl); }
p { margin: 0 0 var(--sp-4); }
a {
  color: var(--color-accent);
  text-decoration: none;
  transition: color var(--t-fast);
}
a:hover { color: var(--color-accent-hover); text-decoration: underline; }
code, pre, .mono { font-family: var(--font-mono); font-size: var(--fs-sm); }

/* --- Layout --- */
.page {
  max-width: var(--content-max);
  margin: 0 auto;
  padding: var(--sp-8) var(--sp-4);
}
.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-sm);
  padding: var(--sp-6) var(--sp-8);
  margin-bottom: var(--sp-6);
}
.stack > * + * { margin-top: var(--sp-4); }

/* --- Buttons --- */
button, .btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--sp-2);
  font-family: var(--font-ui);
  font-size: var(--fs-sm);
  font-weight: 500;
  letter-spacing: 0.01em;
  padding: var(--sp-2) var(--sp-5);
  min-height: 38px;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  color: var(--color-text-primary);
  cursor: pointer;
  text-decoration: none;
  transition: background var(--t-fast), border-color var(--t-fast), color var(--t-fast), box-shadow var(--t-fast);
  white-space: nowrap;
}
button:hover, .btn:hover {
  border-color: var(--color-border-strong);
  background: var(--color-surface-alt);
}
button:focus-visible, .btn:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}
button[disabled], .btn[disabled] {
  opacity: 0.45;
  cursor: not-allowed;
  pointer-events: none;
}
button.primary, .btn.primary {
  background: var(--color-accent);
  border-color: var(--color-accent);
  color: #fff;
  box-shadow: var(--shadow-xs);
}
button.primary:hover, .btn.primary:hover {
  background: var(--color-accent-hover);
  border-color: var(--color-accent-hover);
  box-shadow: var(--shadow-sm);
}

/* --- Form controls --- */
input[type="text"],
input[type="password"],
select,
textarea {
  width: 100%;
  font-family: var(--font-ui);
  font-size: var(--fs-base);
  padding: var(--sp-2) var(--sp-3);
  min-height: 40px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  color: var(--color-text-primary);
  transition: border-color var(--t-fast), box-shadow var(--t-fast);
  -webkit-appearance: none;
}
input::placeholder, textarea::placeholder {
  color: var(--color-text-subtle);
}
input:hover:not(:focus),
select:hover:not(:focus),
textarea:hover:not(:focus) {
  border-color: var(--color-border-strong);
}
input:focus, select:focus, textarea:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(192, 57, 43, 0.15);
}
label {
  display: block;
  font-size: var(--fs-sm);
  font-weight: 500;
  color: var(--color-text-muted);
  margin-bottom: var(--sp-1);
  letter-spacing: 0.005em;
}

/* --- Dropzone --- */
.dropzone {
  border: 2px dashed var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--sp-8) var(--sp-6);
  text-align: center;
  color: var(--color-text-muted);
  background: var(--color-surface-alt);
  cursor: pointer;
  transition: border-color var(--t-base), background var(--t-base);
}
.dropzone:hover, .dropzone.over {
  border-color: var(--color-accent);
  background: var(--color-accent-subtle);
  color: var(--color-text-primary);
}

/* --- Code/URL display --- */
.code-block {
  background: var(--color-code-bg);
  color: #E8E2D8;
  font-family: var(--font-mono);
  font-size: var(--fs-sm);
  padding: var(--sp-4) var(--sp-5);
  border-radius: var(--radius-md);
  overflow-x: auto;
  word-break: break-all;
  line-height: 1.6;
}
.code-block .highlight { color: var(--color-code-syntax); }

/* --- Responsive --- */
@media (max-width: 640px) {
  .page { padding: var(--sp-4) var(--sp-3); }
  .card { padding: var(--sp-5) var(--sp-4); border-radius: var(--radius-lg); }
  h1 { font-size: var(--fs-2xl); }
  h2 { font-size: var(--fs-xl); }
  button, .btn { width: 100%; }
  .btn-row button { width: auto; }
}

/* --- Utilities --- */
.muted  { color: var(--color-text-muted); }
.subtle { color: var(--color-text-subtle); font-size: var(--fs-sm); }

/* --- Status --- (must come after .muted so they win when both classes apply) */
.status-ok   { color: var(--color-success); font-weight: 500; }
.status-err  { color: var(--color-danger);  font-weight: 600; }
.status-warn { color: var(--color-warning); font-weight: 500; }
.hidden { display: none !important; }
.row { display: flex; gap: var(--sp-3); flex-wrap: wrap; align-items: center; }
.grow { flex: 1; }