/* ============================================
   XY Agent AI - Custom Styles
   Minimal CSS beyond Tailwind utility classes
   ============================================ */

/* --- CSS Custom Properties (Design Tokens) --- */
:root {
  /* Backgrounds */
  --color-bg-primary: #0a0a0a;
  --color-bg-secondary: #1a1a1a;

  /* Text */
  --color-text-primary: #f5f5f5;
  --color-text-secondary: #a0a0a0;

  /* Accents */
  --color-accent-primary: #00d4ff;
  --color-accent-secondary: #9d4edd;
  --color-accent-highlight: #00ffff;

  /* Semantic */
  --color-success: #10b981;
  --color-error: #ef4444;
  --color-warning: #f59e0b;

  /* Gradients */
  --gradient-hero: linear-gradient(135deg, #0a0a0a 0%, #1a1a2e 50%, #16213e 100%);
  --gradient-accent: linear-gradient(90deg, #00d4ff 0%, #9d4edd 100%);

  /* Transitions */
  --transition-default: 0.2s ease;
  --transition-slow: 0.5s ease;
  --transition-fast: 0.1s ease;
}

/* --- Base Styles --- */
html {
  scroll-behavior: smooth;
}

body {
  background-color: var(--color-bg-primary);
  color: var(--color-text-primary);
  font-family: 'Inter', sans-serif;
}

h1, h2, h3, h4, h5, h6 {
  font-family: 'Space Grotesk', sans-serif;
}

/* --- Animated Gradient Mesh Background --- */
.gradient-bg {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--gradient-hero);
  z-index: -1;
}

.gradient-bg::before,
.gradient-bg::after {
  content: '';
  position: absolute;
  border-radius: 50%;
  opacity: 0.08;
  filter: blur(80px);
  animation: meshFloat 20s ease-in-out infinite;
}

.gradient-bg::before {
  width: 600px;
  height: 600px;
  background: var(--color-accent-primary);
  top: -200px;
  right: -100px;
}

.gradient-bg::after {
  width: 500px;
  height: 500px;
  background: var(--color-accent-secondary);
  bottom: -150px;
  left: -100px;
  animation-delay: -10s;
}

@keyframes meshFloat {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33% { transform: translate(30px, -30px) scale(1.05); }
  66% { transform: translate(-20px, 20px) scale(0.95); }
}

/* --- Button Styles --- */
.btn-primary {
  background: var(--gradient-accent);
  color: #fff;
  cursor: pointer;
  transition: transform var(--transition-default), box-shadow var(--transition-default);
}

.btn-primary:hover {
  transform: scale(1.05);
  box-shadow: 0 0 20px rgba(0, 212, 255, 0.3);
}

.btn-primary:focus-visible {
  outline: 2px solid var(--color-accent-highlight);
  outline-offset: 2px;
}

.btn-secondary {
  background: transparent;
  border: 1px solid var(--color-accent-primary);
  color: var(--color-accent-primary);
  cursor: pointer;
  transition: background var(--transition-default), color var(--transition-default);
}

.btn-secondary:hover {
  background: rgba(0, 212, 255, 0.1);
}

.btn-secondary:focus-visible {
  outline: 2px solid var(--color-accent-highlight);
  outline-offset: 2px;
}

/* --- Input Styles --- */
/* Spec: "Semi-transparent white (10% opacity)", "1px solid accent-primary" */
.input-field {
  background: rgba(255, 255, 255, 0.10);
  border: 1px solid var(--color-accent-primary);
  color: var(--color-text-primary);
  transition: border-color var(--transition-default), box-shadow var(--transition-default);
}

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

/* Spec: "Glow effect (box-shadow)" on focus */
.input-field:focus {
  border-color: var(--color-accent-highlight);
  box-shadow: 0 0 16px rgba(0, 212, 255, 0.3);
  outline: none;
}

/* --- Card Styles --- */
/* Spec: "1px solid accent-primary (10% opacity)" — bumped to 15% for visibility */
.card {
  background: var(--color-bg-secondary);
  border: 1px solid rgba(0, 212, 255, 0.15);
  transition: transform var(--transition-default), box-shadow var(--transition-default);
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
}

/* --- Loading Animation --- */
.loading-container {
  display: none;
}

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

/* --- Progress Bar --- */
.loading-progress-track {
  height: 3px;
  background: rgba(0, 212, 255, 0.1);
  border-radius: 2px;
  overflow: hidden;
}

.loading-progress-fill {
  height: 100%;
  background: var(--gradient-accent);
  border-radius: 2px;
  transition: width 1.5s cubic-bezier(0.4, 0, 0.2, 1);
}

/* --- Milestone Steps --- */
.loading-milestone {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 6px 0;
  transition: opacity 0.4s ease;
}

.milestone-icon {
  width: 22px;
  height: 22px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  flex-shrink: 0;
  position: relative;
}

.milestone-text {
  font-size: 0.85rem;
  line-height: 1.4;
}

/* Pending: dimmed */
.loading-milestone.milestone-pending {
  opacity: 0.3;
}

.loading-milestone.milestone-pending .milestone-text {
  color: #6b7280;
}

.loading-milestone.milestone-pending .milestone-icon {
  color: #6b7280;
}

/* Active: bright with spinner */
.loading-milestone.milestone-active {
  opacity: 1;
}

.loading-milestone.milestone-active .milestone-text {
  color: var(--color-accent-primary);
}

.loading-milestone.milestone-active .milestone-icon::after {
  content: '';
  width: 18px;
  height: 18px;
  border: 2px solid rgba(0, 212, 255, 0.2);
  border-top-color: var(--color-accent-primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  position: absolute;
}

/* Complete: green checkmark */
.loading-milestone.milestone-complete {
  opacity: 0.6;
}

.loading-milestone.milestone-complete .milestone-text {
  color: #10b981;
}

.loading-milestone.milestone-complete .milestone-icon {
  color: #10b981;
  font-size: 15px;
}

/* --- Loading Tips --- */
#loadingTipText {
  opacity: 0;
  transition: opacity 0.4s ease;
}

#loadingTipText.tip-visible {
  opacity: 1;
}

/* --- Progressive Results Reveal --- */
.reveal-hidden {
  opacity: 0;
  transform: translateY(16px);
}

.reveal-visible {
  opacity: 1;
  transform: translateY(0);
  transition: opacity 0.5s ease, transform 0.5s ease;
}

/* --- Reduced Motion --- */
@media (prefers-reduced-motion: reduce) {
  .loading-progress-fill { transition: none; }
  .loading-milestone.milestone-active .milestone-icon::after { animation: none; }
  .reveal-hidden, .reveal-visible { transition: none; }
  #loadingTipText { transition: none; }
}

/* --- Results Area (hidden by default, used in Phase 2) --- */
.results-container {
  display: none;
}

/* --- Accent Text Gradient --- */
.text-gradient {
  background: var(--gradient-accent);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* --- Focus Indicators (Accessibility) --- */
a:focus-visible,
button:focus-visible,
[tabindex]:focus-visible {
  outline: 2px solid var(--color-accent-highlight);
  outline-offset: 2px;
}

/* --- User Data Panel ---
   Desktop: fixed overlay, top-left
   Mobile: in-flow, pushes content down naturally */

/* Mobile-first: in normal flow */
.ud-panel {
  position: relative;
  padding: 56px 16px 0; /* 56px top to clear fixed nav */
  max-width: 100%;
  z-index: 40;
}

/* Desktop: fixed overlay */
@media (min-width: 769px) {
  .ud-panel {
    position: fixed;
    top: 80px;
    left: 16px;
    padding: 0;
    max-width: 320px;
    pointer-events: none;
  }
}

.ud-line {
  opacity: 0;
  transform: translateX(-8px);
  transition: opacity 0.3s ease, transform 0.3s ease;
}

.ud-line.visible {
  opacity: 1;
  transform: translateX(0);
}

.ud-label {
  color: var(--color-accent-primary);
  font-weight: 700;
}

.ud-value {
  color: #9ca3af; /* gray-400 */
}

.ud-pulse {
  display: inline-block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-accent-primary);
  animation: pulse 2s ease-in-out infinite;
  vertical-align: middle;
  margin-left: 2px;
}

@keyframes pulse {
  0%, 100% { opacity: 1; box-shadow: 0 0 4px var(--color-accent-primary); }
  50% { opacity: 0.3; box-shadow: none; }
}

/* --- Toggle Button --- */
.ud-toggle {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  background: none;
  border: 1px solid rgba(0, 212, 255, 0.2);
  border-radius: 4px;
  color: #6b7280; /* gray-500 */
  font-family: 'Inter', sans-serif;
  font-size: 10px;
  padding: 3px 8px;
  cursor: pointer;
  transition: color 0.2s ease, border-color 0.2s ease;
  margin-bottom: 8px;
}

.ud-toggle:hover {
  color: var(--color-accent-primary);
  border-color: rgba(0, 212, 255, 0.4);
}

.ud-toggle-icon {
  font-size: 8px;
  transition: transform 0.3s ease;
  display: inline-block;
}

.ud-toggle-icon.collapsed {
  transform: rotate(-90deg);
}

/* --- Collapsible Content --- */
.ud-content {
  overflow: hidden;
  max-height: 800px; /* generous max for open state */
  opacity: 1;
  transition: max-height 0.4s ease, opacity 0.3s ease;
}

.ud-content.collapsed {
  max-height: 0;
  opacity: 0;
}

/* --- Section Divider --- */
.section-divider {
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(0, 212, 255, 0.2), transparent);
}