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

:root {
  --font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, monospace;

  /* Brand Accent */
  --brand-50:  #EEF0FB;
  --brand-100: #DDE0F7;
  --brand-200: #B9C0EF;
  --brand-500: #7B85DC;
  --brand-600: #5E6AD2;
  --brand-700: #4A56C0;
  --brand-800: #3A45A8;
  --brand-900: #2A3284;
  --brand-fg:  #5E6AD2;
  --ink: #0B1220;

  /* Slate Neutrals */
  --neutral-0:   #FFFFFF;
  --neutral-50:  #F8FAFC;
  --neutral-100: #F1F5F9;
  --neutral-200: #E2E8F0;
  --neutral-300: #CBD5E1;
  --neutral-400: #94A3B8;
  --neutral-500: #64748B;
  --neutral-600: #475569;
  --neutral-700: #334155;
  --neutral-800: #1E293B;
  --neutral-900: #0F172A;

  /* Surfaces */
  --bg-canvas:   #F8FAFC;
  --bg-surface:  #FFFFFF;
  --bg-elevated: #FFFFFF;
  --bg-hover:    #F1F5F9;

  --text-primary: #0F172A;
  --text-muted:   #475569;
  --text-subtle:  #94A3B8;

  --border-default: #E2E8F0;
  --border-strong:  #CBD5E1;

  /* Shadows */
  --shadow-xs: 0 1px 2px 0 rgba(15, 23, 42, 0.04);
  --shadow-sm: 0 1px 2px 0 rgba(15, 23, 42, 0.05), 0 1px 3px 0 rgba(15, 23, 42, 0.06);
  --shadow-md: 0 2px 4px -1px rgba(15, 23, 42, 0.06), 0 4px 6px -2px rgba(15, 23, 42, 0.04);
  --shadow-lg: 0 4px 6px -2px rgba(15, 23, 42, 0.05), 0 10px 15px -3px rgba(15, 23, 42, 0.08);
  --shadow-xl: 0 8px 10px -4px rgba(15, 23, 42, 0.06), 0 20px 25px -5px rgba(15, 23, 42, 0.10);

  --ring-focus: 0 0 0 3px rgba(94, 106, 210, 0.20);
  --ring-error: 0 0 0 3px rgba(220, 38, 38, 0.16);

  --radius-sm: 4px;
  --radius-md: 6px;
  --radius-lg: 8px;
  --radius-xl: 12px;
}

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

body {
  font-family: var(--font-sans);
  background-color: var(--bg-canvas);
  background-image:
    radial-gradient(circle at top left, rgba(94, 106, 210, 0.08), transparent 28%),
    radial-gradient(circle at top right, rgba(14, 165, 233, 0.06), transparent 24%);
  color: var(--text-primary);
  line-height: 1.5;
  font-size: 14px;
  -webkit-font-smoothing: antialiased;
}

.mono {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
}

a {
  color: inherit;
  text-decoration: none;
}

button, input, select, textarea {
  font-family: inherit;
  font-size: inherit;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}
::-webkit-scrollbar-track {
  background: var(--neutral-50);
}
::-webkit-scrollbar-thumb {
  background: var(--neutral-300);
  border-radius: 3px;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--neutral-400);
}

/* Utility Classes */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 36px;
  padding: 0 14px;
  border-radius: var(--radius-md);
  font-weight: 500;
  font-size: 13px;
  cursor: pointer;
  transition: all 150ms cubic-bezier(0.16, 1, 0.3, 1);
  border: 1px solid transparent;
  outline: none;
  white-space: nowrap;
}

.btn:focus-visible {
  box-shadow: var(--ring-focus);
}

.btn-primary {
  background-color: var(--brand-600);
  color: #FFFFFF;
}
.btn-primary:hover {
  background-color: var(--brand-700);
}
.btn-primary:active {
  background-color: var(--brand-800);
}

.btn-secondary {
  background-color: var(--bg-surface);
  color: var(--text-primary);
  border-color: var(--border-default);
}
.btn-secondary:hover {
  background-color: var(--bg-hover);
  border-color: var(--border-strong);
}

.btn-ghost {
  background-color: transparent;
  color: var(--text-muted);
}
.btn-ghost:hover {
  background-color: var(--neutral-100);
  color: var(--text-primary);
}

.btn-danger {
  background-color: #DC2626;
  color: #FFFFFF;
}
.btn-danger:hover {
  background-color: #B91C1C;
}

.btn-sm {
  height: 30px;
  padding: 0 10px;
  font-size: 12px;
}

.btn-lg {
  height: 42px;
  padding: 0 20px;
  font-size: 14px;
}

.input {
  width: 100%;
  height: 36px;
  padding: 0 12px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-default);
  background-color: var(--bg-surface);
  color: var(--text-primary);
  font-size: 13px;
  outline: none;
  transition: border-color 150ms ease, box-shadow 150ms ease;
}

.input:focus {
  border-color: var(--brand-600);
  box-shadow: var(--ring-focus);
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 2px 8px;
  border-radius: var(--radius-sm);
  font-size: 11px;
  font-weight: 500;
  text-transform: capitalize;
}

.badge-success {
  background-color: #DCFCE7;
  color: #15803D;
}
.badge-warning {
  background-color: #FEF9C3;
  color: #A16207;
}
.badge-error {
  background-color: #FEE2E2;
  color: #B91C1C;
}
.badge-info {
  background-color: #DBEAFE;
  color: #1D4ED8;
}
.badge-neutral {
  background-color: var(--neutral-100);
  color: var(--text-muted);
}

.card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-lg);
  padding: 20px;
  box-shadow: var(--shadow-xs);
}

/* Modal Overlay */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background-color: rgba(15, 23, 42, 0.45);
  backdrop-filter: blur(3px);
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
  animation: fadeIn 150ms ease-out;
}

.modal-content {
  background-color: var(--bg-surface);
  border-radius: var(--radius-xl);
  border: 1px solid var(--border-default);
  box-shadow: var(--shadow-xl);
  width: 100%;
  max-width: 540px;
  max-height: 90vh;
  overflow-y: auto;
  animation: slideUp 200ms cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes slideUp {
  from { opacity: 0; transform: translateY(12px) scale(0.98); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}

/* Step Pipeline Animation */
.step-node {
  position: relative;
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding-bottom: 24px;
}
.step-node:last-child {
  padding-bottom: 0;
}
.step-node:not(:last-child)::after {
  content: '';
  position: absolute;
  left: 15px;
  top: 32px;
  bottom: 0;
  width: 2px;
  background-color: var(--border-default);
}
.step-node.completed:not(:last-child)::after {
  background-color: var(--brand-600);
}

.step-icon {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  font-weight: 600;
  background-color: var(--neutral-100);
  color: var(--neutral-500);
  border: 2px solid var(--neutral-200);
  z-index: 1;
}
.step-node.active .step-icon {
  background-color: var(--brand-50);
  color: var(--brand-600);
  border-color: var(--brand-600);
  box-shadow: 0 0 0 4px var(--brand-50);
}
.step-node.completed .step-icon {
  background-color: var(--brand-600);
  color: #FFFFFF;
  border-color: var(--brand-600);
}
.step-node.failed .step-icon {
  background-color: #FEE2E2;
  color: #DC2626;
  border-color: #DC2626;
}

/* Terminal log box */
.log-box {
  background-color: #0F172A;
  color: #38BDF8;
  font-family: var(--font-mono);
  font-size: 12px;
  padding: 14px;
  border-radius: var(--radius-md);
  max-height: 220px;
  overflow-y: auto;
  line-height: 1.6;
}