/* ═══════════════════════════════════════════════════════════
   OrgFlow — Forest + Amber design system
   ═══════════════════════════════════════════════════════════ */

/* ─── Design tokens: Light mode ───────────────────────────── */
:root {
  /* Surfaces */
  --bg:           #ffffff;
  --bg-surface:   #f7fef9;
  --bg-subtle:    #f0fdf4;
  --bg-muted:     #dcfce7;
  --bg-input:     #ffffff;

  /* Text */
  --text:         #1c1917;
  --text-muted:   #57534e;
  --text-faint:   #a8a29e;

  /* Borders */
  --border:       #e2f0e4;
  --border-mid:   #86efac;

  /* Primary — Forest Green */
  --primary:        #16a34a;
  --primary-hover:  #15803d;
  --primary-subtle: #dcfce7;
  --primary-text:   #14532d;

  /* Accent — Amber */
  --accent:         #f59e0b;
  --accent-hover:   #d97706;
  --accent-subtle:  #fef3c7;
  --accent-text:    #78350f;

  /* Nav */
  --nav-bg:         #14532d;
  --nav-text:       #bbf7d0;
  --nav-link:       #86efac;
  --nav-link-hover: #fbbf24;

  /* Badge palette */
  --b-blue-bg:    #dbeafe; --b-blue-fg:    #1e40af;
  --b-green-bg:   #dcfce7; --b-green-fg:   #14532d;
  --b-amber-bg:   #fef3c7; --b-amber-fg:   #78350f;
  --b-red-bg:     #fee2e2; --b-red-fg:     #991b1b;
  --b-indigo-bg:  #e0e7ff; --b-indigo-fg:  #3730a3;
  --b-neutral-bg: #f3f4f6; --b-neutral-fg: #374151;

  /* Shape */
  --radius-sm: 4px;
  --radius:    6px;
  --radius-lg: 10px;
  --pill:      9999px;
  --shadow:    0 1px 3px rgba(0,0,0,.08), 0 1px 2px rgba(0,0,0,.05);
  --shadow-md: 0 4px 12px rgba(0,0,0,.10);
}

/* ─── Design tokens: Dark mode ────────────────────────────── */
[data-theme="dark"] {
  --bg:           #0f1a11;
  --bg-surface:   #162419;
  --bg-subtle:    #1a2e1f;
  --bg-muted:     #1f3626;
  --bg-input:     #162419;

  --text:         #f0fdf4;
  --text-muted:   #a7f3d0;
  --text-faint:   #6ee7b7;

  --border:       #1f3626;
  --border-mid:   #2d4a35;

  --primary:        #22c55e;
  --primary-hover:  #16a34a;
  --primary-subtle: #14532d;
  --primary-text:   #bbf7d0;

  --accent:         #fbbf24;
  --accent-hover:   #f59e0b;
  --accent-subtle:  #78350f;
  --accent-text:    #fef3c7;

  --nav-bg:         #0a1f0d;
  --nav-text:       #bbf7d0;
  --nav-link:       #86efac;
  --nav-link-hover: #fbbf24;

  --b-blue-bg:    #1e3a5f; --b-blue-fg:    #93c5fd;
  --b-green-bg:   #14532d; --b-green-fg:   #86efac;
  --b-amber-bg:   #78350f; --b-amber-fg:   #fde68a;
  --b-red-bg:     #7f1d1d; --b-red-fg:     #fca5a5;
  --b-indigo-bg:  #312e81; --b-indigo-fg:  #c7d2fe;
  --b-neutral-bg: #374151; --b-neutral-fg: #d1d5db;
}

/* System dark mode (no manual override set) */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg:           #0f1a11;
    --bg-surface:   #162419;
    --bg-subtle:    #1a2e1f;
    --bg-muted:     #1f3626;
    --bg-input:     #162419;
    --text:         #f0fdf4;
    --text-muted:   #a7f3d0;
    --text-faint:   #6ee7b7;
    --border:       #1f3626;
    --border-mid:   #2d4a35;
    --primary:        #22c55e;
    --primary-hover:  #16a34a;
    --primary-subtle: #14532d;
    --primary-text:   #bbf7d0;
    --accent:         #fbbf24;
    --accent-hover:   #f59e0b;
    --accent-subtle:  #78350f;
    --accent-text:    #fef3c7;
    --nav-bg:         #0a1f0d;
    --b-blue-bg:    #1e3a5f; --b-blue-fg:    #93c5fd;
    --b-green-bg:   #14532d; --b-green-fg:   #86efac;
    --b-amber-bg:   #78350f; --b-amber-fg:   #fde68a;
    --b-red-bg:     #7f1d1d; --b-red-fg:     #fca5a5;
    --b-indigo-bg:  #312e81; --b-indigo-fg:  #c7d2fe;
    --b-neutral-bg: #374151; --b-neutral-fg: #d1d5db;
  }
}

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

/* ─── Base ────────────────────────────────────────────────── */
html { color-scheme: light dark; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  line-height: 1.6;
  color: var(--text);
  background: var(--bg);
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
  transition: background 0.2s, color 0.2s;
}

/* ─── Navigation ──────────────────────────────────────────── */
nav {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  height: 52px;
  /* extend nav full-width within the body container */
  margin: 0 -1.5rem;
  padding: 0 1.5rem;
  background: var(--nav-bg);
  margin-bottom: 0;
  border-bottom: 1px solid rgba(255,255,255,0.07);
}
nav a {
  text-decoration: none;
  color: var(--nav-link);
  font-size: 0.85rem;
  padding: 0.3rem 0.6rem;
  border-radius: var(--radius-sm);
  transition: color 0.15s, background 0.15s;
  white-space: nowrap;
}
nav a:hover {
  color: var(--nav-link-hover);
  background: rgba(255,255,255,0.08);
  text-decoration: none;
}
/* Logo / brand — first link */
nav a:first-child {
  font-size: 1rem;
  font-weight: 700;
  color: #ffffff;
  margin-right: auto;
  padding: 0;
  letter-spacing: -0.01em;
}
nav a:first-child:hover { color: var(--nav-link-hover); background: none; }

/* Dark mode toggle button */
.theme-toggle {
  background: none;
  border: 1px solid rgba(255,255,255,0.18);
  color: var(--nav-text);
  border-radius: var(--radius-sm);
  padding: 0.25rem 0.55rem;
  font-size: 0.8rem;
  cursor: pointer;
  line-height: 1.4;
  margin-left: 0.5rem;
  transition: background 0.15s, color 0.15s, border-color 0.15s;
}
.theme-toggle:hover {
  background: rgba(255,255,255,0.1);
  border-color: rgba(255,255,255,0.35);
  color: var(--nav-link-hover);
}

/* ─── Page layout ─────────────────────────────────────────── */
main { padding: 1.75rem 0; }

.page-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.5rem;
  gap: 1rem;
  flex-wrap: wrap;
}
.page-header h1 { margin: 0; }

/* ─── Typography ──────────────────────────────────────────── */
h1 { font-size: 1.75rem; font-weight: 700; margin-bottom: 0.5rem; color: var(--text); }
h2 { font-size: 1.2rem;  font-weight: 600; margin-bottom: 0.5rem; color: var(--text); }
h3 { font-size: 1rem;    font-weight: 600; margin-bottom: 0.375rem; color: var(--text); }

a { color: var(--primary); text-decoration: none; }
a:hover { color: var(--primary-hover); text-decoration: underline; }

/* Back-link style for first <a> directly inside main */
main > a:first-child {
  display: inline-block;
  font-size: 0.875rem;
  color: var(--text-muted);
  margin-bottom: 0.75rem;
}
main > a:first-child:hover { color: var(--primary); text-decoration: none; }

/* ─── Flash messages ──────────────────────────────────────── */
#messages { margin-bottom: 1rem; }
.message {
  padding: 0.75rem 1rem;
  margin-bottom: 0.5rem;
  border-radius: var(--radius);
  font-size: 0.875rem;
  border-left: 3px solid currentColor;
}
.message.success { background: var(--b-green-bg); color: var(--b-green-fg); }
.message.error   { background: var(--b-red-bg);   color: var(--b-red-fg);   }
.message.warning { background: var(--b-amber-bg); color: var(--b-amber-fg); }
.message.info    { background: var(--b-blue-bg);  color: var(--b-blue-fg);  }

/* ─── Buttons ─────────────────────────────────────────────── */
button, .btn {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.45rem 1rem;
  border: none;
  border-radius: var(--radius);
  cursor: pointer;
  font-size: 0.875rem;
  font-weight: 500;
  text-decoration: none;
  line-height: 1.4;
  background: var(--primary);
  color: #fff;
  transition: background 0.15s, transform 0.1s;
}
button:hover, .btn:hover { background: var(--primary-hover); text-decoration: none; }
button:active, .btn:active { transform: translateY(1px); }

.btn-accent  { background: var(--accent); color: #fff; }
.btn-accent:hover { background: var(--accent-hover); }

.btn-ghost {
  background: transparent;
  color: var(--text-muted);
  border: 1px solid var(--border-mid);
}
.btn-ghost:hover { background: var(--bg-subtle); color: var(--text); border-color: var(--primary); }

.btn-sm { padding: 0.3rem 0.65rem; font-size: 0.8rem; }

.btn-danger { background: var(--b-red-bg); color: var(--b-red-fg); border: 1px solid #fca5a5; }
.btn-danger:hover { background: #fecaca; }

/* ─── Form inputs ─────────────────────────────────────────── */
input, textarea, select {
  padding: 0.5rem 0.75rem;
  border: 1px solid var(--border-mid);
  border-radius: var(--radius);
  font-size: 0.875rem;
  width: 100%;
  background: var(--bg-input);
  color: var(--text);
  transition: border-color 0.15s, box-shadow 0.15s;
}
input:focus, textarea:focus, select:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-subtle);
}
input[type="checkbox"], input[type="radio"] { width: auto; }
textarea { min-height: 80px; resize: vertical; }
select { width: auto; cursor: pointer; }

form p { margin-bottom: 0.75rem; }
form label {
  display: block;
  margin-bottom: 0.25rem;
  font-weight: 500;
  font-size: 0.875rem;
  color: var(--text-muted);
}

/* ─── Badges ──────────────────────────────────────────────── */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 0.15rem 0.55rem;
  border-radius: var(--pill);
  font-size: 0.75rem;
  font-weight: 500;
  white-space: nowrap;
  line-height: 1.4;
}
.badge-primary  { background: var(--b-blue-bg);    color: var(--b-blue-fg);    }
.badge-success  { background: var(--b-green-bg);   color: var(--b-green-fg);   }
.badge-warning  { background: var(--b-amber-bg);   color: var(--b-amber-fg);   }
.badge-danger   { background: var(--b-red-bg);     color: var(--b-red-fg);     }
.badge-info     { background: var(--b-indigo-bg);  color: var(--b-indigo-fg);  }
.badge-secondary{ background: var(--b-neutral-bg); color: var(--b-neutral-fg); }

/* ─── Data tables ─────────────────────────────────────────── */
.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.875rem;
  border-top: 2px solid var(--primary);
  background: var(--bg);
}
.data-table thead tr {
  background: var(--bg-subtle);
}
.data-table th {
  padding: 0.65rem 1rem;
  text-align: left;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--primary-text);
  border-bottom: 1px solid var(--border-mid);
  white-space: nowrap;
}
.data-table td {
  padding: 0.65rem 1rem;
  border-bottom: 1px solid var(--border);
  color: var(--text);
  vertical-align: middle;
}
.data-table tbody tr:last-child td { border-bottom: none; }
.data-table tbody tr:nth-child(even) td { background: var(--bg-subtle); }
.data-table tbody tr:hover td {
  background: var(--bg-muted);
}
/* Muted/secondary cell text */
.data-table .cell-muted { color: var(--text-muted); font-size: 0.8125rem; }

/* ─── Cards ───────────────────────────────────────────────── */
.card {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1rem 1.25rem;
  box-shadow: var(--shadow);
}

/* Workflow node cards */
.node-card {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-left: 3px solid var(--primary);
  border-radius: var(--radius-lg);
  padding: 1rem 1.25rem;
  margin-bottom: 0.75rem;
  box-shadow: var(--shadow);
}

/* ─── Misc helpers ────────────────────────────────────────── */
.error   { color: var(--b-red-fg); }
.success { color: var(--b-green-fg); }