/* ======================================
   GE AI Tool - Modern UI Design System
   ====================================== */

/* CSS Custom Properties */
:root {
  --primary-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  --header-gradient: linear-gradient(135deg, #1a1a2e 0%, #16213e 50%, #0f3460 100%);
  --accent-color: #667eea;
  --accent-light: #818cf8;
  --accent-dark: #4f46e5;
  --success-color: #10b981;
  --warning-color: #f59e0b;
  --error-color: #ef4444;

  --bg-primary: #f8fafc;
  --bg-secondary: #f1f5f9;
  --bg-card: rgba(255, 255, 255, 0.85);
  --bg-card-hover: rgba(255, 255, 255, 0.95);

  --text-primary: #1e293b;
  --text-secondary: #64748b;
  --text-muted: #94a3b8;

  --border-color: rgba(148, 163, 184, 0.2);
  --border-hover: rgba(102, 126, 234, 0.4);

  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);

  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;

  --transition-fast: 0.15s ease;
  --transition-normal: 0.25s ease;
  --transition-slow: 0.35s ease;
}

/* Import Google Font */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap');

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: var(--bg-primary);
  background-image:
    radial-gradient(at 40% 20%, rgba(102, 126, 234, 0.08) 0px, transparent 50%),
    radial-gradient(at 80% 0%, rgba(118, 75, 162, 0.06) 0px, transparent 50%),
    radial-gradient(at 0% 50%, rgba(16, 185, 129, 0.04) 0px, transparent 50%);
  color: var(--text-primary);
  min-height: 100vh;
}

/* ======================================
   Header
   ====================================== */
.header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 32px;
  background: var(--header-gradient);
  color: #fff;
  position: relative;
  overflow: hidden;
}

.header::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background:
    radial-gradient(circle at 20% 50%, rgba(102, 126, 234, 0.15) 0%, transparent 50%),
    radial-gradient(circle at 80% 50%, rgba(118, 75, 162, 0.1) 0%, transparent 50%);
  pointer-events: none;
}

.header>* {
  position: relative;
  z-index: 1;
}

.header h1 {
  margin: 0 0 4px 0;
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: -0.025em;
  display: flex;
  align-items: center;
  gap: 12px;
}

.header h1::before {
  content: '⚡';
  font-size: 1.25rem;
}

.header p {
  margin: 0;
  opacity: 0.75;
  font-size: 0.875rem;
  font-weight: 400;
}

.health {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.875rem;
  background: rgba(255, 255, 255, 0.1);
  padding: 8px 16px;
  border-radius: var(--radius-xl);
  backdrop-filter: blur(10px);
}

.dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--text-muted);
  display: inline-block;
  position: relative;
}

.dot.ok {
  background: var(--success-color);
  box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.4);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0% {
    box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.4);
  }

  70% {
    box-shadow: 0 0 0 8px rgba(16, 185, 129, 0);
  }

  100% {
    box-shadow: 0 0 0 0 rgba(16, 185, 129, 0);
  }
}

/* ======================================
   Navigation Tabs
   ====================================== */
.tabs {
  display: flex;
  gap: 8px;
  padding: 20px 32px 0;
  background: transparent;
}

.tab {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  padding: 12px 24px;
  border-radius: var(--radius-xl);
  font-weight: 600;
  font-size: 0.9rem;
  cursor: pointer;
  color: var(--text-secondary);
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.tab:hover {
  background: var(--bg-card-hover);
  color: var(--text-primary);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.tab.active {
  background: var(--primary-gradient);
  color: #fff;
  border-color: transparent;
  box-shadow: var(--shadow-lg), 0 0 20px rgba(102, 126, 234, 0.3);
}

.tab.active:hover {
  transform: translateY(-2px);
}

.tab-panel {
  display: none;
  animation: fadeIn 0.3s ease;
}

.tab-panel.active {
  display: block;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ======================================
   Layout
   ====================================== */
.layout {
  display: grid;
  grid-template-columns: minmax(320px, 1fr) minmax(400px, 1.8fr);
  gap: 20px;
  padding: 24px 32px;
}

/* ======================================
   Cards
   ====================================== */
.card {
  background: var(--bg-card);
  padding: 24px;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  border: 1px solid var(--border-color);
  backdrop-filter: blur(10px);
  transition: all var(--transition-normal);
}

.card:hover {
  box-shadow: var(--shadow-lg);
  border-color: var(--border-hover);
}

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 16px;
}

.card h2 {
  margin: 0 0 16px 0;
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 8px;
}

.card h2::before {
  content: '';
  width: 4px;
  height: 1em;
  background: var(--primary-gradient);
  border-radius: 2px;
}

/* ======================================
   Form Elements
   ====================================== */
textarea {
  width: 100%;
  min-height: 160px;
  border: 2px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 16px;
  font-family: 'Inter', sans-serif;
  font-size: 0.9rem;
  resize: vertical;
  background: #fff;
  color: var(--text-primary);
  transition: all var(--transition-fast);
  line-height: 1.6;
}

textarea:focus {
  outline: none;
  border-color: var(--accent-color);
  box-shadow: 0 0 0 4px rgba(102, 126, 234, 0.1);
}

textarea::placeholder {
  color: var(--text-muted);
}

textarea:disabled {
  background: var(--bg-secondary);
  cursor: not-allowed;
  opacity: 0.6;
}

#iterateInput {
  min-height: 120px;
}

/* ======================================
   Model Selectors
   ====================================== */
.model-selects {
  margin-top: 16px;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: 12px;
}

.model-selects label {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  min-width: 0;
  /* Prevent flex overflow */
}

.model-selects select {
  border-radius: var(--radius-sm);
  border: 2px solid var(--border-color);
  padding: 10px 8px;
  background: #fff;
  font-size: 0.8rem;
  font-family: 'Inter', sans-serif;
  color: var(--text-primary);
  cursor: pointer;
  transition: all var(--transition-fast);
  width: 100%;
  min-width: 0;
  /* Allow shrinking */
  overflow: hidden;
  text-overflow: ellipsis;
}

.model-selects select:hover {
  border-color: var(--border-hover);
}

.model-selects select:focus {
  outline: none;
  border-color: var(--accent-color);
  box-shadow: 0 0 0 4px rgba(102, 126, 234, 0.1);
}

/* ======================================
   Buttons
   ====================================== */
.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 16px;
}

button {
  padding: 12px 20px;
  border: none;
  border-radius: var(--radius-sm);
  background: var(--primary-gradient);
  color: #fff;
  cursor: pointer;
  font-weight: 600;
  font-size: 0.875rem;
  font-family: 'Inter', sans-serif;
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
}

button::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.2) 0%, transparent 50%);
  opacity: 0;
  transition: opacity var(--transition-fast);
}

button:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg), 0 0 20px rgba(102, 126, 234, 0.3);
}

button:hover:not(:disabled)::before {
  opacity: 1;
}

button:active:not(:disabled) {
  transform: translateY(0);
}

button:disabled {
  background: var(--bg-secondary);
  color: var(--text-muted);
  cursor: not-allowed;
  box-shadow: none;
}

.ghost {
  background: transparent;
  color: var(--accent-color);
  border: 2px solid var(--border-color);
}

.ghost:hover:not(:disabled) {
  background: rgba(102, 126, 234, 0.05);
  border-color: var(--accent-color);
  box-shadow: none;
}

.ghost::before {
  display: none;
}

/* ======================================
   Status Indicator
   ====================================== */
.status {
  margin-top: 16px;
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 0.875rem;
  color: var(--accent-color);
  background: rgba(102, 126, 234, 0.08);
  display: flex;
  align-items: center;
  gap: 8px;
}

.status::before {
  content: '●';
  font-size: 0.5rem;
  animation: blink 1s infinite;
}

@keyframes blink {

  0%,
  50% {
    opacity: 1;
  }

  51%,
  100% {
    opacity: 0.3;
  }
}

.status.error {
  color: var(--error-color);
  background: rgba(239, 68, 68, 0.08);
}

.status.error::before {
  animation: none;
}

/* ======================================
   Panels (Code/Preview Areas)
   ====================================== */
.panel {
  min-height: 200px;
  max-height: 400px;
  border: 2px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 16px;
  background: #fafbfc;
  overflow: auto;
  font-family: 'SF Mono', 'Monaco', 'Inconsolata', 'Roboto Mono', monospace;
  font-size: 0.8rem;
  line-height: 1.6;
  color: var(--text-primary);
}

pre.panel {
  margin: 0;
  white-space: pre-wrap;
  word-break: break-word;
}

/* ======================================
   Prompt Display
   ====================================== */
.promptDisplay {
  margin-top: 16px;
  background: linear-gradient(135deg, rgba(102, 126, 234, 0.05) 0%, rgba(118, 75, 162, 0.05) 100%);
  padding: 16px;
  border-radius: var(--radius-md);
  font-size: 0.875rem;
  border: 1px solid var(--border-color);
}

.promptDisplay .label {
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--text-secondary);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.iteration-note {
  margin: 0 0 12px 0;
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

/* ======================================
   iFrame Preview
   ====================================== */
iframe {
  width: 100%;
  min-height: 400px;
  border: 2px solid var(--border-color);
  border-radius: var(--radius-md);
  background: #fff;
  transition: border-color var(--transition-fast);
}

iframe:hover {
  border-color: var(--border-hover);
}

/* ======================================
   Runs List
   ====================================== */
.runs-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-top: 8px;
  max-height: 500px;
  overflow-y: auto;
}

.run-item {
  text-align: left;
  background: #fff;
  border: 2px solid var(--border-color);
  color: var(--text-primary);
  padding: 16px;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-normal);
}

.run-item:hover {
  border-color: var(--accent-color);
  transform: translateX(4px);
  box-shadow: var(--shadow-md);
}

.run-item:hover .run-title {
  color: var(--accent-color);
}

.run-title {
  font-weight: 600;
  margin-bottom: 6px;
  font-size: 0.9rem;
  transition: color var(--transition-fast);
}

.run-snippet {
  font-size: 0.8rem;
  color: var(--text-secondary);
  line-height: 1.4;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.run-meta {
  font-size: 0.8rem;
  margin-bottom: 16px;
  color: var(--text-secondary);
  padding: 12px;
  background: var(--bg-secondary);
  border-radius: var(--radius-sm);
  line-height: 1.5;
}

.run-section {
  margin-top: 16px;
}

.run-section .label {
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--text-secondary);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* ======================================
   Empty State
   ====================================== */
.empty {
  padding: 32px;
  background: linear-gradient(135deg, rgba(102, 126, 234, 0.03) 0%, rgba(118, 75, 162, 0.03) 100%);
  border-radius: var(--radius-md);
  border: 2px dashed var(--border-color);
  color: var(--text-muted);
  text-align: center;
  font-size: 0.9rem;
}

.empty::before {
  content: '📁';
  display: block;
  font-size: 2rem;
  margin-bottom: 12px;
  opacity: 0.5;
}

.empty.error {
  color: var(--error-color);
  border-color: rgba(239, 68, 68, 0.3);
  background: rgba(239, 68, 68, 0.03);
}

.empty.error::before {
  content: '⚠️';
}

/* ======================================
   Toast Notifications
   ====================================== */
.toast {
  position: fixed;
  bottom: 24px;
  right: 24px;
  padding: 16px 24px;
  background: var(--text-primary);
  color: #fff;
  border-radius: var(--radius-md);
  font-weight: 500;
  font-size: 0.875rem;
  box-shadow: var(--shadow-xl);
  z-index: 1000;
  animation: slideIn 0.3s ease, fadeOut 0.3s ease 2.7s forwards;
}

@keyframes slideIn {
  from {
    transform: translateY(100%);
    opacity: 0;
  }

  to {
    transform: translateY(0);
    opacity: 1;
  }
}

@keyframes fadeOut {
  to {
    opacity: 0;
    transform: translateY(10px);
  }
}

/* ======================================
   Loading Spinner
   ====================================== */
.spinner {
  width: 20px;
  height: 20px;
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  display: inline-block;
  margin-right: 8px;
}

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

/* ======================================
   Progress Steps
   ====================================== */
.progress-steps {
  display: flex;
  gap: 8px;
  margin-top: 12px;
}

.progress-step {
  flex: 1;
  padding: 8px 12px;
  background: var(--bg-secondary);
  border-radius: var(--radius-sm);
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-muted);
  text-align: center;
  transition: all var(--transition-fast);
}

.progress-step.active {
  background: rgba(102, 126, 234, 0.15);
  color: var(--accent-color);
}

.progress-step.done {
  background: rgba(16, 185, 129, 0.15);
  color: var(--success-color);
}

/* ======================================
   Responsive Design
   ====================================== */
@media (max-width: 1024px) {
  .layout {
    grid-template-columns: 1fr;
    padding: 20px;
  }

  .header {
    padding: 16px 20px;
  }

  .tabs {
    padding: 16px 20px 0;
  }

  .model-selects {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  .header {
    flex-direction: column;
    gap: 16px;
    text-align: center;
  }

  .tabs {
    flex-direction: column;
  }

  .tab {
    text-align: center;
  }

  .actions {
    flex-direction: column;
  }

  button {
    width: 100%;
    justify-content: center;
  }

  .card-header {
    flex-direction: column;
    align-items: stretch;
  }
}

/* ======================================
   Scrollbar Styling
   ====================================== */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: var(--bg-secondary);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb {
  background: var(--text-muted);
  border-radius: 4px;
}

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