/* ICore Constitutional Workflow Engine — Design System v1.0.0 */
/* Dark theme, mobile-first, zero external dependencies */

:root {
  --bg-primary: #0a0a0f;
  --bg-secondary: #12121a;
  --bg-card: #16161f;
  --bg-input: #1e1e2a;
  --bg-hover: #222233;
  --text-primary: #e8e8f0;
  --text-secondary: #a0a0b8;
  --text-muted: #606078;
  --accent: #00e676;
  --accent-dim: #00c864;
  --accent-bg: rgba(0,230,118,0.08);
  --error: #ff5252;
  --warning: #ffab40;
  --info: #40c4ff;
  --border: #2a2a3a;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 32px;
  --font-mono: 'SF Mono', 'Cascadia Code', 'Fira Code', monospace;
}

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

html { font-size: 16px; -webkit-text-size-adjust: 100%; }

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.5;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  overscroll-behavior: none;
}

/* Layout */
#app { display: flex; flex-direction: column; min-height: 100vh; }

.header {
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border);
  position: sticky; top: 44px; z-index: 100;
  padding: var(--space-sm) var(--space-md);
  backdrop-filter: blur(10px);
}
.header-inner { display: flex; align-items: center; justify-content: space-between; }
.header-brand { display: flex; align-items: center; gap: var(--space-sm); }
.header-logo { font-size: 1.5rem; }
.header-title { font-size: 1rem; font-weight: 700; color: var(--text-primary); }
.header-subtitle { font-size: 0.7rem; color: var(--text-muted); }

.main { flex: 1; padding: var(--space-md); padding-bottom: 80px; max-width: 600px; margin: 0 auto; width: 100%; }

/* Navigation */
.bottom-nav {
  position: fixed; bottom: 0; left: 0; right: 0;
  background: var(--bg-secondary);
  border-top: 1px solid var(--border);
  z-index: 100;
  padding-bottom: env(safe-area-inset-bottom);
}
.bottom-nav-inner { display: flex; justify-content: space-around; padding: var(--space-sm) 0; }
.nav-item {
  display: flex; flex-direction: column; align-items: center;
  gap: 2px; background: none; border: none;
  color: var(--text-muted); font-size: 0.65rem;
  padding: var(--space-xs) var(--space-sm);
  cursor: pointer; transition: color 0.2s;
}
.nav-item:hover, .nav-item.active { color: var(--accent); }
.nav-item-icon { font-size: 1.2rem; }

/* Cards */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: var(--space-md);
  margin-bottom: var(--space-md);
  transition: border-color 0.2s;
}
.card:hover { border-color: var(--accent-dim); }
.card-header { display: flex; align-items: center; gap: var(--space-sm); }
.card-title { font-size: 0.95rem; font-weight: 700; }
.card-description { font-size: 0.8rem; color: var(--text-secondary); }

/* Buttons */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: var(--space-xs);
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-sm);
  font-size: 0.85rem; font-weight: 600;
  border: 1px solid transparent;
  cursor: pointer; transition: all 0.2s;
  text-decoration: none; width: 100%;
}
.btn-primary { background: var(--accent); color: #000; border-color: var(--accent); }
.btn-primary:hover { background: var(--accent-dim); }
.btn-secondary { background: transparent; color: var(--accent); border-color: var(--accent); }
.btn-secondary:hover { background: var(--accent-bg); }
.btn-danger { background: transparent; color: var(--error); border-color: var(--error); }
.btn-sm { padding: var(--space-xs) var(--space-sm); font-size: 0.75rem; width: auto; }

/* Forms */
.form-group { margin-bottom: var(--space-md); }
.form-label { display: block; font-size: 0.8rem; font-weight: 600; color: var(--text-secondary); margin-bottom: var(--space-xs); }
.form-input, .form-select, .form-textarea {
  width: 100%;
  padding: var(--space-sm) var(--space-md);
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-size: 0.85rem;
  font-family: inherit;
}
.form-input:focus, .form-select:focus, .form-textarea:focus {
  outline: none; border-color: var(--accent);
}
.form-textarea { min-height: 80px; resize: vertical; }
.form-select { appearance: none; cursor: pointer; }

/* Status indicators */
.status-badge {
  display: inline-flex; align-items: center; gap: 4px;
  padding: 2px var(--space-sm);
  border-radius: 20px;
  font-size: 0.7rem; font-weight: 600;
}
.status-draft { background: rgba(160,160,184,0.15); color: var(--text-muted); }
.status-validated { background: rgba(64,196,255,0.15); color: var(--info); }
.status-ready { background: rgba(255,171,64,0.15); color: var(--warning); }
.status-executing { background: rgba(255,171,64,0.2); color: var(--warning); }
.status-paused { background: rgba(255,171,64,0.1); color: var(--warning); }
.status-completed { background: rgba(0,230,118,0.15); color: var(--accent); }
.status-failed { background: rgba(255,82,82,0.15); color: var(--error); }
.status-attested { background: rgba(0,230,118,0.25); color: var(--accent); }

/* Step indicators */
.step-item {
  display: flex; align-items: center; gap: var(--space-sm);
  padding: var(--space-sm) var(--space-md);
  border-left: 2px solid var(--border);
  margin-left: var(--space-sm);
  transition: border-color 0.2s;
}
.step-item.active { border-left-color: var(--accent); }
.step-item.done { border-left-color: var(--accent); }
.step-item.error { border-left-color: var(--error); }
.step-icon { font-size: 1rem; min-width: 24px; text-align: center; }
.step-info { flex: 1; }
.step-name { font-size: 0.85rem; font-weight: 600; }
.step-detail { font-size: 0.7rem; color: var(--text-muted); }

/* Event log */
.event-log {
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: var(--space-sm);
  max-height: 200px;
  overflow-y: auto;
  font-family: var(--font-mono);
  font-size: 0.7rem;
}
.event-entry { padding: 2px 0; color: var(--text-secondary); }
.event-entry .ts { color: var(--text-muted); }
.event-entry.critical { color: var(--error); }
.event-entry.high { color: var(--warning); }

/* Stats grid */
.stats-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-sm); }
.stat-box {
  background: var(--bg-input);
  border-radius: var(--radius-sm);
  padding: var(--space-sm);
  text-align: center;
}
.stat-label { font-size: 0.65rem; color: var(--text-muted); text-transform: uppercase; }
.stat-value { font-size: 1.2rem; font-weight: 700; }
.stat-detail { font-size: 0.65rem; color: var(--text-secondary); }

/* Layer grid */
.layer-grid { display: flex; flex-direction: column; gap: var(--space-xs); }
.layer-item { display: flex; align-items: center; gap: var(--space-sm); padding: var(--space-xs) 0; }
.layer-number { font-size: 0.7rem; font-weight: 700; color: var(--accent); min-width: 28px; }
.layer-info { flex: 1; }
.layer-name { font-size: 0.8rem; font-weight: 600; }
.layer-desc { font-size: 0.7rem; color: var(--text-muted); }

/* Animations */
.animate-in { animation: fadeIn 0.3s ease-out; }
@keyframes fadeIn { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: translateY(0); } }

/* Utilities */
.text-center { text-align: center; }
.text-muted { color: var(--text-muted); }
.text-secondary { color: var(--text-secondary); }
.text-accent { color: var(--accent); }
.text-error { color: var(--error); }
.mb-sm { margin-bottom: var(--space-sm); }
.mb-md { margin-bottom: var(--space-md); }
.mb-lg { margin-bottom: var(--space-lg); }
.mt-sm { margin-top: var(--space-sm); }
.mt-md { margin-top: var(--space-md); }
.mt-lg { margin-top: var(--space-lg); }
.hidden { display: none !important; }

/* Offline banner */
.offline-banner {
  background: var(--warning);
  color: #000;
  text-align: center;
  padding: var(--space-xs);
  font-size: 0.75rem;
  font-weight: 600;
}

/* Scrollbar */
::-webkit-scrollbar { width: 4px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 2px; }

/* Toast */
.toast {
  position: fixed; bottom: 80px; left: 50%; transform: translateX(-50%);
  background: var(--bg-card); border: 1px solid var(--accent);
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-sm);
  font-size: 0.8rem; z-index: 200;
  animation: fadeIn 0.3s ease-out;
  max-width: 90%;
}