/* IntentLoop - Observable Agent Orchestration */
/* Dark theme, developer-focused, distinctive aesthetic */

:root {
  /* Colors */
  --bg-primary: #0a0a0f;
  --bg-secondary: #12121a;
  --bg-tertiary: #1a1a24;
  --bg-elevated: #22222e;

  --text-primary: #f4f4f6;
  --text-secondary: #9ca3af;
  --text-muted: #6b7280;

  --accent-primary: #10b981;
  --accent-secondary: #06b6d4;
  --accent-gradient: linear-gradient(135deg, #10b981 0%, #06b6d4 100%);

  --border-color: #2a2a36;
  --border-focus: #10b981;

  --status-pending: #6b7280;
  --status-active: #f59e0b;
  --status-complete: #10b981;
  --status-error: #ef4444;

  /* Typography */
  --font-display: 'Space Mono', monospace;
  --font-body: 'Instrument Sans', sans-serif;

  /* Sizing */
  --header-height: 60px;
  --sidebar-width: 280px;

  /* Transitions */
  --transition-fast: 0.15s ease;
  --transition-normal: 0.25s ease;
}

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

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-body);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.5;
  min-height: 100vh;
}

/* Utilities */
.hidden { display: none !important; }

/* Views */
.view {
  min-height: 100vh;
}

/* ========== AUTH VIEW ========== */
.auth-container {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 2rem;
  background:
    radial-gradient(ellipse at top, rgba(16, 185, 129, 0.1) 0%, transparent 50%),
    var(--bg-primary);
}

.logo-section {
  text-align: center;
  margin-bottom: 3rem;
}

.logo {
  margin-bottom: 1.5rem;
  animation: pulse 3s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.7; }
}

.logo-section h1 {
  font-family: var(--font-display);
  font-size: 2.5rem;
  font-weight: 700;
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 0.75rem;
}

.tagline {
  color: var(--text-secondary);
  font-size: 1.1rem;
  max-width: 400px;
}

.auth-forms {
  width: 100%;
  max-width: 380px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 1.5rem;
}

.auth-tabs {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
  padding: 4px;
  background: var(--bg-tertiary);
  border-radius: 8px;
}

.auth-tab {
  flex: 1;
  padding: 0.75rem 1rem;
  background: transparent;
  border: none;
  border-radius: 6px;
  color: var(--text-secondary);
  font-family: var(--font-body);
  font-size: 0.9rem;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition-fast);
}

.auth-tab:hover {
  color: var(--text-primary);
}

.auth-tab.active {
  background: var(--bg-elevated);
  color: var(--text-primary);
}

.auth-form {
  display: none;
}

.auth-form.active {
  display: block;
}

.form-group {
  margin-bottom: 1.25rem;
}

.form-group label {
  display: block;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 0.5rem;
}

.form-group input {
  width: 100%;
  padding: 0.875rem 1rem;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 1rem;
  transition: var(--transition-fast);
}

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

.form-group input:focus {
  outline: none;
  border-color: var(--border-focus);
  box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.1);
}

.auth-error {
  margin-top: 1rem;
  padding: 0.75rem;
  background: rgba(239, 68, 68, 0.1);
  border: 1px solid rgba(239, 68, 68, 0.3);
  border-radius: 6px;
  color: #ef4444;
  font-size: 0.9rem;
  text-align: center;
}

.auth-error:empty {
  display: none;
}

.features-preview {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1rem;
  margin-top: 3rem;
  max-width: 600px;
}

.feature {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 20px;
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.feature-icon {
  font-family: var(--font-display);
  font-size: 0.75rem;
  color: var(--accent-primary);
}

/* ========== BUTTONS ========== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.875rem 1.5rem;
  border: none;
  border-radius: 8px;
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition-fast);
  text-decoration: none;
}

.btn-primary {
  width: 100%;
  background: var(--accent-gradient);
  color: var(--bg-primary);
}

.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 20px rgba(16, 185, 129, 0.3);
}

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

.btn-ghost {
  background: transparent;
  color: var(--text-secondary);
  padding: 0.5rem 0.75rem;
}

.btn-ghost:hover {
  color: var(--text-primary);
  background: var(--bg-tertiary);
}

.btn-accent {
  background: var(--accent-gradient);
  color: var(--bg-primary);
  padding: 0.75rem 1.25rem;
}

/* ========== MAIN VIEW ========== */
.app-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 1.5rem;
  background: rgba(10, 10, 15, 0.9);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border-color);
  z-index: 100;
}

.header-left, .header-right {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.logo-small {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1rem;
  color: var(--text-primary);
}

.user-info {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

#user-email {
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.tier-badge {
  padding: 0.25rem 0.6rem;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: 4px;
  font-family: var(--font-display);
  font-size: 0.75rem;
  color: var(--text-muted);
}

.tier-badge.pro {
  background: rgba(16, 185, 129, 0.1);
  border-color: var(--accent-primary);
  color: var(--accent-primary);
}

/* ========== APP MAIN ========== */
.app-main {
  display: flex;
  padding-top: var(--header-height);
  min-height: 100vh;
}

.playground-section {
  flex: 1;
  padding: 2rem;
  max-width: calc(100% - var(--sidebar-width));
}

.input-section {
  margin-bottom: 2rem;
}

.input-section h2 {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.usage-info {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-bottom: 1rem;
}

.task-input-container {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

#task-input {
  width: 100%;
  padding: 1rem;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.6;
  resize: vertical;
  min-height: 120px;
  transition: var(--transition-fast);
}

#task-input::placeholder {
  color: var(--text-muted);
}

#task-input:focus {
  outline: none;
  border-color: var(--border-focus);
  box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.1);
}

.btn-execute {
  align-self: flex-end;
  width: auto;
  min-width: 120px;
}

.spinner {
  width: 18px;
  height: 18px;
  animation: spin 1s linear infinite;
}

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

/* ========== CONTROL LOOP ========== */
.control-loop {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.stage {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  overflow: hidden;
  transition: var(--transition-normal);
}

.stage.active {
  border-color: var(--status-active);
  box-shadow: 0 0 20px rgba(245, 158, 11, 0.1);
}

.stage.complete {
  border-color: var(--status-complete);
}

.stage.error {
  border-color: var(--status-error);
}

.stage-header {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1rem 1.25rem;
  background: var(--bg-tertiary);
  border-bottom: 1px solid var(--border-color);
}

.stage-number {
  font-family: var(--font-display);
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--text-muted);
}

.stage.active .stage-number,
.stage.complete .stage-number {
  color: var(--accent-primary);
}

.stage-name {
  flex: 1;
  font-weight: 600;
  font-size: 0.95rem;
}

.stage-status {
  font-family: var(--font-display);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 0.25rem 0.5rem;
  border-radius: 4px;
  background: var(--bg-elevated);
  color: var(--text-muted);
}

.stage.active .stage-status {
  background: rgba(245, 158, 11, 0.15);
  color: var(--status-active);
}

.stage.complete .stage-status {
  background: rgba(16, 185, 129, 0.15);
  color: var(--status-complete);
}

.stage.error .stage-status {
  background: rgba(239, 68, 68, 0.15);
  color: var(--status-error);
}

.stage-content {
  padding: 1rem 1.25rem;
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

.stage-content:empty {
  display: none;
}

.stage-content pre {
  background: var(--bg-tertiary);
  padding: 0.75rem;
  border-radius: 6px;
  overflow-x: auto;
  font-family: var(--font-display);
  font-size: 0.8rem;
  line-height: 1.5;
}

.stage-content .goal {
  color: var(--accent-primary);
  font-weight: 500;
}

.stage-content .subtask {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 0;
  border-bottom: 1px solid var(--border-color);
}

.stage-content .subtask:last-child {
  border-bottom: none;
}

.stage-content .subtask-id {
  font-family: var(--font-display);
  font-size: 0.75rem;
  color: var(--text-muted);
}

/* Graph visualization */
.graph-container {
  padding: 1rem;
  background: var(--bg-tertiary);
  border-radius: 6px;
  text-align: center;
}

.graph-node {
  display: inline-block;
  padding: 0.5rem 1rem;
  background: var(--bg-elevated);
  border: 1px solid var(--border-color);
  border-radius: 6px;
  margin: 0.25rem;
  font-size: 0.85rem;
}

.graph-node.goal {
  border-color: var(--accent-primary);
  color: var(--accent-primary);
}

/* Plan steps */
.plan-step {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--border-color);
}

.plan-step:last-child {
  border-bottom: none;
}

.plan-step-number {
  font-family: var(--font-display);
  font-size: 0.75rem;
  color: var(--accent-secondary);
  min-width: 24px;
}

.plan-step-content {
  flex: 1;
}

.plan-step-action {
  font-weight: 500;
  color: var(--text-primary);
  margin-bottom: 0.25rem;
}

.plan-step-tool {
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* ========== RESULTS SECTION ========== */
.results-section {
  margin-top: 2rem;
  padding: 1.5rem;
  background: var(--bg-secondary);
  border: 1px solid var(--status-complete);
  border-radius: 8px;
}

.results-section h3 {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 700;
  color: var(--accent-primary);
  margin-bottom: 1rem;
}

.result-content {
  padding: 1rem;
  background: var(--bg-tertiary);
  border-radius: 6px;
  font-size: 0.95rem;
  line-height: 1.7;
  white-space: pre-wrap;
  max-height: 400px;
  overflow-y: auto;
}

.trace-section {
  margin-top: 1rem;
  text-align: right;
}

/* ========== HISTORY SIDEBAR ========== */
.history-sidebar {
  width: var(--sidebar-width);
  padding: 2rem 1.5rem;
  background: var(--bg-secondary);
  border-left: 1px solid var(--border-color);
  height: calc(100vh - var(--header-height));
  position: sticky;
  top: var(--header-height);
  overflow-y: auto;
}

.history-sidebar h3 {
  font-family: var(--font-display);
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 1rem;
}

.history-list {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.history-empty {
  font-size: 0.9rem;
  color: var(--text-muted);
  font-style: italic;
}

.history-item {
  padding: 0.75rem;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: 6px;
  cursor: pointer;
  transition: var(--transition-fast);
}

.history-item:hover {
  border-color: var(--accent-primary);
}

.history-item-task {
  font-size: 0.85rem;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.history-item-meta {
  display: flex;
  justify-content: space-between;
  font-size: 0.75rem;
  color: var(--text-muted);
}

.history-item-status {
  font-family: var(--font-display);
  text-transform: uppercase;
}

.history-item-status.completed {
  color: var(--status-complete);
}

.history-item-status.failed {
  color: var(--status-error);
}

.history-item-status.running {
  color: var(--status-active);
}

/* ========== UPGRADE BANNER ========== */
.upgrade-banner {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 1rem 2rem;
  background: rgba(18, 18, 26, 0.95);
  backdrop-filter: blur(10px);
  border-top: 1px solid var(--border-color);
  z-index: 100;
}

.upgrade-content {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1.5rem;
  max-width: 600px;
  margin: 0 auto;
}

.upgrade-content span {
  color: var(--text-secondary);
}

/* ========== MODALS ========== */
.modal {
  position: fixed;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
}

.modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(4px);
}

.modal-content {
  position: relative;
  width: 90%;
  max-width: 600px;
  max-height: 80vh;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.modal-content.modal-large {
  max-width: 900px;
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.25rem 1.5rem;
  background: var(--bg-tertiary);
  border-bottom: 1px solid var(--border-color);
}

.modal-header h2 {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 700;
}

.modal-close {
  background: none;
  border: none;
  color: var(--text-secondary);
  font-size: 1.5rem;
  cursor: pointer;
  padding: 0.25rem;
  line-height: 1;
  transition: var(--transition-fast);
}

.modal-close:hover {
  color: var(--text-primary);
}

.modal-body {
  padding: 1.5rem;
  overflow-y: auto;
}

.api-section {
  margin-bottom: 2rem;
}

.api-section:last-child {
  margin-bottom: 0;
}

.api-section h3 {
  font-family: var(--font-display);
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--accent-primary);
  margin-bottom: 0.75rem;
}

.api-section p {
  color: var(--text-secondary);
  margin-bottom: 0.75rem;
  font-size: 0.9rem;
}

.code-block {
  background: var(--bg-tertiary);
  padding: 1rem;
  border-radius: 6px;
  font-family: var(--font-display);
  font-size: 0.85rem;
  overflow-x: auto;
  line-height: 1.6;
}

.api-table {
  width: 100%;
  border-collapse: collapse;
}

.api-table tr {
  border-bottom: 1px solid var(--border-color);
}

.api-table tr:last-child {
  border-bottom: none;
}

.api-table td {
  padding: 0.75rem 0;
  font-size: 0.9rem;
}

.api-table td:first-child {
  width: 200px;
}

.api-table code {
  font-family: var(--font-display);
  font-size: 0.85rem;
  color: var(--accent-secondary);
}

/* ========== RESPONSIVE ========== */
@media (max-width: 900px) {
  .history-sidebar {
    display: none;
  }

  .playground-section {
    max-width: 100%;
  }
}

@media (max-width: 600px) {
  .auth-container {
    padding: 1rem;
  }

  .logo-section h1 {
    font-size: 2rem;
  }

  .tagline {
    font-size: 1rem;
  }

  .features-preview {
    gap: 0.5rem;
  }

  .feature {
    padding: 0.4rem 0.8rem;
    font-size: 0.8rem;
  }

  .app-header {
    padding: 0 1rem;
  }

  .playground-section {
    padding: 1rem;
  }

  .modal-content {
    width: 95%;
    max-height: 90vh;
  }
}