frontend/src/app/globals.css

@import "tailwindcss";

/* ═══════════════════════════════════════════════
   KERNL DESIGN SYSTEM — "Aerospace Grade"
   Glassmorphism × Minimalism × Dark-first
   ═══════════════════════════════════════════════ */

:root {
  /* ── Core Palette ── */
  --bg-base: #0A0F14;
  --bg-surface: #111820;
  --bg-elevated: #19222D;
  --bg-input: #0C1218;
  --bg-hover: #1E2A36;

  /* ── Brand Teal ── */
  --primary: #00D2B4;
  --primary-hover: #00E8C8;
  --primary-dim: #00A893;
  --primary-ghost: rgba(0, 210, 180, 0.08);
  --primary-glow: rgba(0, 210, 180, 0.15);

  /* ── Text ── */
  --text-primary: #E8EDF2;
  --text-secondary: #8899A6;
  --text-muted: #5C6F7E;
  --text-inverse: #0A0F14;

  /* ── Borders ── */
  --border: rgba(255, 255, 255, 0.06);
  --border-hover: rgba(255, 255, 255, 0.12);
  --border-active: rgba(0, 210, 180, 0.3);

  /* ── Status ── */
  --success: #34D399;
  --success-bg: rgba(52, 211, 153, 0.1);
  --warning: #FBBF24;
  --warning-bg: rgba(251, 191, 36, 0.1);
  --error: #F87171;
  --error-bg: rgba(248, 113, 113, 0.1);
  --info: #60A5FA;
  --info-bg: rgba(96, 165, 250, 0.1);

  /* ── Spacing (8pt grid) ── */
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 20px;
  --space-6: 24px;
  --space-8: 32px;
  --space-10: 40px;
  --space-12: 48px;
  --space-16: 64px;

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

  /* ── Sidebar ── */
  --sidebar-width: 64px;

  /* ── Typography ── */
  --font-sans: 'Inter', var(--font-geist-sans), system-ui, sans-serif;
  --font-mono: 'JetBrains Mono', var(--font-geist-mono), 'Fira Code', monospace;
}

/* ── Tailwind Theme Bridge ── */
@theme inline {
  --color-background: var(--bg-base);
  --color-foreground: var(--text-primary);
  --color-surface: var(--bg-surface);
  --color-elevated: var(--bg-elevated);
  --color-primary: var(--primary);
  --color-primary-hover: var(--primary-hover);
  --color-primary-dim: var(--primary-dim);
  --color-primary-ghost: var(--primary-ghost);
  --color-text-secondary: var(--text-secondary);
  --color-text-muted: var(--text-muted);
  --color-border: var(--border);
  --color-border-hover: var(--border-hover);
  --color-success: var(--success);
  --color-warning: var(--warning);
  --color-error: var(--error);
  --color-info: var(--info);
  --font-sans: var(--font-sans);
  --font-mono: var(--font-mono);
}

/* ═══════════════ Global Base ═══════════════ */

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

html {
  scroll-behavior: smooth;
  color-scheme: dark;
  background-color: #0A0F14;
}

body {
  background: #0A0F14 !important;
  background-color: #0A0F14 !important;
  color: var(--text-primary);
  font-family: var(--font-sans);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ── Selection ── */
::selection {
  background: rgba(0, 210, 180, 0.25);
  color: #fff;
}

/* ── Scrollbar ── */
::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}

::-webkit-scrollbar-track {
  background: transparent;
}

::-webkit-scrollbar-thumb {
  background: var(--border-hover);
  border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--text-muted);
}

/* ═══════════════ Animation Keyframes ═══════════════ */

@keyframes fade-in {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes fade-up {
  from { opacity: 0; transform: translateY(16px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes slide-in-right {
  from { opacity: 0; transform: translateX(24px); }
  to { opacity: 1; transform: translateX(0); }
}

@keyframes slide-in-left {
  from { opacity: 0; transform: translateX(-24px); }
  to { opacity: 1; transform: translateX(0); }
}

@keyframes pulse-glow {
  0%, 100% { box-shadow: 0 0 0 0 rgba(0, 210, 180, 0.2); }
  50% { box-shadow: 0 0 16px 4px rgba(0, 210, 180, 0.15); }
}

@keyframes shimmer {
  0% { background-position: -200% 0; }
  100% { background-position: 200% 0; }
}

@keyframes spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

@keyframes flow-dots {
  0% { background-position: 0 0; }
  100% { background-position: 24px 0; }
}

/* ═══════════════ Utility Classes ═══════════════ */

.animate-fade-in {
  animation: fade-in 0.4s ease-out both;
}

.animate-fade-up {
  animation: fade-up 0.5s ease-out both;
}

.animate-slide-right {
  animation: slide-in-right 0.4s ease-out both;
}

.animate-pulse-glow {
  animation: pulse-glow 2s ease-in-out infinite;
}

.animate-shimmer {
  background: linear-gradient(90deg, transparent 25%, rgba(255,255,255,0.04) 50%, transparent 75%);
  background-size: 200% 100%;
  animation: shimmer 2s linear infinite;
}

.animate-spin-slow {
  animation: spin 2s linear infinite;
}

/* ── Stagger children ── */
.stagger-children > * {
  animation: fade-up 0.4s ease-out both;
}
.stagger-children > *:nth-child(1) { animation-delay: 0.05s; }
.stagger-children > *:nth-child(2) { animation-delay: 0.1s; }
.stagger-children > *:nth-child(3) { animation-delay: 0.15s; }
.stagger-children > *:nth-child(4) { animation-delay: 0.2s; }
.stagger-children > *:nth-child(5) { animation-delay: 0.25s; }
.stagger-children > *:nth-child(6) { animation-delay: 0.3s; }

/* ═══════════════ Component Primitives ═══════════════ */

/* ── Glass Card ── */
.glass-card {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  backdrop-filter: blur(12px);
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.glass-card:hover {
  border-color: var(--border-hover);
}

.glass-card--interactive:hover {
  border-color: var(--border-active);
  box-shadow: 0 0 24px -8px rgba(0, 210, 180, 0.08);
  cursor: pointer;
}

.glass-card--elevated {
  background: var(--bg-elevated);
  border-color: var(--border-hover);
}

/* ── Gradient Mesh Background ── */
.mesh-gradient {
  position: fixed;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(ellipse 60% 40% at 20% 80%, rgba(0, 210, 180, 0.04) 0%, transparent 60%),
    radial-gradient(ellipse 50% 50% at 80% 20%, rgba(96, 165, 250, 0.03) 0%, transparent 60%),
    radial-gradient(ellipse 40% 60% at 50% 50%, rgba(139, 92, 246, 0.02) 0%, transparent 60%);
  pointer-events: none;
}

/* ── Button Styles ── */
.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 20px;
  background: var(--primary);
  color: var(--text-inverse);
  font-weight: 600;
  font-size: 14px;
  border-radius: var(--radius);
  border: none;
  cursor: pointer;
  transition: all 0.2s ease;
  white-space: nowrap;
}

.btn-primary:hover {
  background: var(--primary-hover);
  box-shadow: 0 0 20px -4px rgba(0, 210, 180, 0.3);
}

.btn-primary:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  box-shadow: none;
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 20px;
  background: transparent;
  color: var(--text-primary);
  font-weight: 600;
  font-size: 14px;
  border-radius: var(--radius);
  border: 1px solid var(--border-hover);
  cursor: pointer;
  transition: all 0.2s ease;
  white-space: nowrap;
}

.btn-secondary:hover {
  background: var(--bg-hover);
  border-color: var(--text-muted);
}

.btn-ghost {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 20px;
  background: transparent;
  color: var(--primary);
  font-weight: 600;
  font-size: 14px;
  border-radius: var(--radius);
  border: none;
  cursor: pointer;
  transition: all 0.2s ease;
  white-space: nowrap;
}

.btn-ghost:hover {
  background: var(--primary-ghost);
}

/* ── Input Styles ── */
.input-field {
  width: 100%;
  padding: 10px 14px;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text-primary);
  font-size: 14px;
  font-family: var(--font-sans);
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
  outline: none;
}

.input-field::placeholder {
  color: var(--text-muted);
}

.input-field:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(0, 210, 180, 0.1);
}

.input-field--mono {
  font-family: var(--font-mono);
  font-size: 13px;
}

/* ── Label ── */
.input-label {
  display: block;
  font-size: 12px;
  font-weight: 600;
  font-family: var(--font-mono);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--text-secondary);
  margin-bottom: 6px;
}

/* ── Badge/Chip ── */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 3px 10px;
  font-size: 11px;
  font-weight: 600;
  font-family: var(--font-mono);
  letter-spacing: 0.02em;
  border-radius: var(--radius-sm);
  white-space: nowrap;
}

.badge--primary {
  background: var(--primary-ghost);
  color: var(--primary);
  border: 1px solid rgba(0, 210, 180, 0.2);
}

.badge--success {
  background: var(--success-bg);
  color: var(--success);
  border: 1px solid rgba(52, 211, 153, 0.2);
}

.badge--warning {
  background: var(--warning-bg);
  color: var(--warning);
  border: 1px solid rgba(251, 191, 36, 0.2);
}

.badge--error {
  background: var(--error-bg);
  color: var(--error);
  border: 1px solid rgba(248, 113, 113, 0.2);
}

.badge--info {
  background: var(--info-bg);
  color: var(--info);
  border: 1px solid rgba(96, 165, 250, 0.2);
}

.badge--neutral {
  background: rgba(255, 255, 255, 0.04);
  color: var(--text-secondary);
  border: 1px solid var(--border);
}

/* ── Pipeline Node ── */
.pipeline-connector {
  width: 2px;
  height: 32px;
  margin: 0 auto;
  background: linear-gradient(to bottom, var(--primary-dim), var(--border));
  position: relative;
}

.pipeline-connector--active {
  background: var(--primary);
  box-shadow: 0 0 8px rgba(0, 210, 180, 0.3);
}

.pipeline-connector--pending {
  background: var(--border);
}

/* ── Terminal Log ── */
.terminal {
  background: #05070A;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.7;
  overflow-y: auto;
  padding: var(--space-4);
}

.terminal-line {
  display: flex;
  gap: 8px;
}

.terminal-time {
  color: var(--text-muted);
  flex-shrink: 0;
}

.terminal-event {
  color: var(--primary);
}

.terminal-detail {
  color: var(--text-secondary);
}

.terminal-error {
  color: var(--error);
}

/* ── Progress Bar ── */
.progress-bar {
  height: 6px;
  background: rgba(255, 255, 255, 0.06);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.progress-bar__fill {
  height: 100%;
  border-radius: var(--radius-full);
  transition: width 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ── Empty State ── */
.empty-state {
  text-align: center;
  padding: var(--space-16) var(--space-8);
}

.empty-state__icon {
  width: 56px;
  height: 56px;
  margin: 0 auto var(--space-6);
  border-radius: var(--radius-md);
  background: var(--primary-ghost);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  font-size: 24px;
}

/* ═══════════════ Reduced Motion ═══════════════ */

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}