/* ================================================================
   ORBITAL AI PROGRESS LOADER - CSS
   Premium loading screen for ThumbnailBuilder
   ================================================================ */

/* ===========================================
   CSS CUSTOM PROPERTIES (Design Tokens)
   =========================================== */
:root {
  /* Colors */
  --orbital-bg: #05050a;
  --orbital-surface: #0d0d14;
  --orbital-border: rgba(255, 255, 255, 0.06);

  --orbital-cyan: #00f0ff;
  --orbital-purple: #a855f7;
  --orbital-green: #00ff94;
  --orbital-pink: #ff00aa;

  --orbital-text-primary: #ffffff;
  --orbital-text-secondary: #9494a8;
  --orbital-text-muted: #58586a;

  /* Shadows & Glows */
  --orbital-glow-cyan: 0 0 20px rgba(0, 240, 255, 0.5), 0 0 40px rgba(0, 240, 255, 0.2);
  --orbital-glow-purple: 0 0 20px rgba(168, 85, 247, 0.5), 0 0 40px rgba(168, 85, 247, 0.2);
  --orbital-glow-green: 0 0 20px rgba(0, 255, 148, 0.5), 0 0 40px rgba(0, 255, 148, 0.2);

  /* Timing */
  --orbital-duration-fast: 0.2s;
  --orbital-duration-normal: 0.4s;
  --orbital-duration-slow: 0.8s;
  --orbital-ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --orbital-ease-bounce: cubic-bezier(0.34, 1.56, 0.64, 1);

  /* Orbit Settings */
  --orbit-radius: 120px;
  --orbit-duration: 8s;
}

/* ===========================================
   KEYFRAME ANIMATIONS
   =========================================== */

@keyframes coreBreathe {
  0%, 100% { transform: scale(1); opacity: 0.9; }
  50% { transform: scale(1.05); opacity: 1; }
}

@keyframes coreGlow {
  0%, 100% {
    box-shadow:
      0 0 30px rgba(0, 240, 255, 0.4),
      0 0 60px rgba(168, 85, 247, 0.2),
      inset 0 0 30px rgba(0, 240, 255, 0.1);
  }
  50% {
    box-shadow:
      0 0 50px rgba(0, 240, 255, 0.6),
      0 0 100px rgba(168, 85, 247, 0.4),
      inset 0 0 50px rgba(0, 240, 255, 0.2);
  }
}

@keyframes orbit {
  0% { transform: rotate(0deg) translateX(var(--orbit-radius)) rotate(0deg); }
  100% { transform: rotate(360deg) translateX(var(--orbit-radius)) rotate(-360deg); }
}

@keyframes nodePulse {
  0%, 100% { transform: scale(1); opacity: 1; }
  50% { transform: scale(1.2); opacity: 0.7; }
}

@keyframes nodeGlowRing {
  0% { transform: scale(1); opacity: 0.8; }
  100% { transform: scale(2); opacity: 0; }
}

@keyframes scanline {
  0% { top: -10%; }
  100% { top: 110%; }
}

@keyframes particleFloat {
  0% { transform: translate(0, 0) scale(1); opacity: 0; }
  10% { opacity: 0.8; }
  90% { opacity: 0.8; }
  100% { transform: translate(var(--drift-x), var(--drift-y)) scale(0.5); opacity: 0; }
}

@keyframes particleEnergize {
  0% { transform: translate(0, 0) scale(1); opacity: 0; }
  5% { opacity: 1; }
  95% { opacity: 1; }
  100% { transform: translate(var(--drift-x), var(--drift-y)) scale(0.3); opacity: 0; }
}

@keyframes connectionPulse {
  0%, 100% { stroke-opacity: 0.3; }
  50% { stroke-opacity: 1; }
}

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

@keyframes burstExpand {
  0% { transform: scale(0); opacity: 1; }
  100% { transform: scale(3); opacity: 0; }
}

@keyframes readyGlitch {
  0%, 100% {
    transform: translate(0);
    text-shadow: -2px 0 var(--orbital-cyan), 2px 0 var(--orbital-purple);
  }
  20% { transform: translate(-3px, 2px); }
  40% { transform: translate(3px, -2px); }
  60% { transform: translate(-2px, 1px); }
  80% { transform: translate(2px, -1px); }
}

@keyframes fadeIn {
  from { opacity: 0; transform: scale(0.95); }
  to { opacity: 1; transform: scale(1); }
}

/* v13: Success pulse animation for completion celebration */
@keyframes successPulse {
  0%, 100% {
    transform: scale(1);
    box-shadow: 0 0 30px rgba(0, 255, 148, 0.4);
  }
  50% {
    transform: scale(1.02);
    box-shadow: 0 0 60px rgba(0, 255, 148, 0.6);
  }
}

@keyframes fadeOut {
  from { opacity: 1; transform: scale(1); }
  to { opacity: 0; transform: scale(0.95); }
}

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

@keyframes stepActivate {
  0% { transform: scale(0.9); opacity: 0.5; }
  50% { transform: scale(1.05); }
  100% { transform: scale(1); opacity: 1; }
}

/* ===========================================
   BASE LOADER STYLES
   =========================================== */

.orbital-loader {
  position: fixed;
  inset: 0;
  z-index: 10000;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--orbital-bg);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--orbital-duration-normal) var(--orbital-ease-out),
              visibility var(--orbital-duration-normal);
}

.orbital-loader[data-state="visible"] {
  opacity: 1;
  visibility: visible;
}

.orbital-loader[data-state="hiding"] {
  animation: fadeOut var(--orbital-duration-normal) var(--orbital-ease-out) forwards;
}

/* Scanline Effect */
.orbital-scanline {
  position: absolute;
  left: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, transparent, rgba(0, 240, 255, 0.15), transparent);
  animation: scanline 3s linear infinite;
  pointer-events: none;
}

/* Particle Field */
.orbital-particles {
  position: absolute;
  inset: 0;
  overflow: hidden;
  pointer-events: none;
}

.orbital-particle {
  position: absolute;
  width: var(--size, 4px);
  height: var(--size, 4px);
  border-radius: 50%;
  background: var(--color, var(--orbital-cyan));
  box-shadow: 0 0 6px var(--color, var(--orbital-cyan));
  animation: particleFloat var(--duration, 6s) var(--orbital-ease-out) infinite;
  animation-delay: var(--delay, 0s);
}

.orbital-loader[data-progress-tier="high"] .orbital-particle {
  animation-name: particleEnergize;
  animation-duration: calc(var(--duration, 6s) * 0.5);
}

/* ===========================================
   MAIN CONTAINER
   =========================================== */

.orbital-container {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 32px;
  padding: 48px;
  max-width: 500px;
  width: 100%;
  animation: fadeIn var(--orbital-duration-slow) var(--orbital-ease-out);
}

/* ===========================================
   CENTRAL CORE
   =========================================== */

.orbital-core-wrapper {
  position: relative;
  width: 300px;
  height: 300px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.orbital-progress-ring {
  position: absolute;
  width: 100%;
  height: 100%;
  pointer-events: none;
}

#orbitalProgressArc {
  transition: stroke-dashoffset 0.5s var(--orbital-ease-out);
}

/* Orbital Nodes Container */
.orbital-nodes {
  position: absolute;
  width: 100%;
  height: 100%;
  animation: ringSpin 20s linear infinite;
}

/* Individual Nodes */
.orbital-node {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 48px;
  height: 48px;
  margin: -24px;
  animation: orbit var(--orbit-duration) linear infinite;
  animation-delay: var(--orbit-delay, 0s);
}

.orbital-node-inner {
  width: 100%;
  height: 100%;
  border-radius: 50%;
  background: var(--orbital-surface);
  border: 2px solid var(--orbital-border);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--orbital-duration-normal) var(--orbital-ease-out);
}

.orbital-node-icon {
  font-size: 20px;
  filter: grayscale(1) opacity(0.5);
  transition: filter var(--orbital-duration-normal);
}

.orbital-node-pulse {
  position: absolute;
  inset: -4px;
  border-radius: 50%;
  border: 2px solid var(--orbital-cyan);
  opacity: 0;
  pointer-events: none;
}

/* Node States */
.orbital-node[data-state="pending"] .orbital-node-inner { opacity: 0.5; }

.orbital-node[data-state="active"] .orbital-node-inner {
  border-color: var(--orbital-cyan);
  box-shadow: var(--orbital-glow-cyan);
}

.orbital-node[data-state="active"] .orbital-node-icon { filter: none; }

.orbital-node[data-state="active"] .orbital-node-pulse {
  animation: nodeGlowRing 1.5s var(--orbital-ease-out) infinite;
}

.orbital-node[data-state="completed"] .orbital-node-inner {
  border-color: var(--orbital-green);
  background: rgba(0, 255, 148, 0.1);
  box-shadow: var(--orbital-glow-green);
}

.orbital-node[data-state="completed"] .orbital-node-icon { filter: none; }

/* Neural Connections */
.orbital-connections {
  position: absolute;
  width: 100%;
  height: 100%;
  pointer-events: none;
}

.orbital-connection {
  stroke: var(--orbital-cyan);
  stroke-width: 2;
  stroke-opacity: 0;
  stroke-dasharray: 4 4;
  transition: stroke-opacity var(--orbital-duration-normal);
}

.orbital-connection[data-active="true"] {
  stroke-opacity: 0.6;
  animation: connectionPulse 2s ease-in-out infinite;
}

/* Central Core */
.orbital-core {
  position: relative;
  width: 100px;
  height: 100px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.orbital-core-inner {
  width: 80px;
  height: 80px;
  border-radius: 20px;
  background: linear-gradient(135deg, var(--orbital-surface), var(--orbital-bg));
  border: 1px solid var(--orbital-border);
  display: flex;
  align-items: center;
  justify-content: center;
  animation: coreBreathe 3s ease-in-out infinite;
  z-index: 2;
}

.orbital-core-text {
  font-family: 'Inter', system-ui, sans-serif;
  font-size: 28px;
  font-weight: 800;
  background: linear-gradient(135deg, var(--orbital-cyan), var(--orbital-purple));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.orbital-core-glow {
  position: absolute;
  inset: -10px;
  border-radius: 30px;
  animation: coreGlow 3s ease-in-out infinite;
  z-index: 1;
}

.orbital-core-ring {
  position: absolute;
  inset: -20px;
  border-radius: 50%;
  border: 2px solid var(--orbital-cyan);
  opacity: 0.3;
  animation: ringSpin 6s linear infinite;
}

/* Completion Burst */
.orbital-burst {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  pointer-events: none;
  opacity: 0;
}

.orbital-burst-ring {
  position: absolute;
  width: 100px;
  height: 100px;
  margin: -50px;
  border-radius: 50%;
  border: 3px solid var(--orbital-green);
}

.orbital-loader[data-state="complete"] .orbital-burst { opacity: 1; }

.orbital-loader[data-state="complete"] .orbital-burst-ring:nth-child(1) {
  animation: burstExpand 0.8s var(--orbital-ease-out) forwards;
}
.orbital-loader[data-state="complete"] .orbital-burst-ring:nth-child(2) {
  animation: burstExpand 0.8s var(--orbital-ease-out) 0.1s forwards;
}
.orbital-loader[data-state="complete"] .orbital-burst-ring:nth-child(3) {
  animation: burstExpand 0.8s var(--orbital-ease-out) 0.2s forwards;
}

/* Ready Badge */
.orbital-ready {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  opacity: 0;
  z-index: 10;
  pointer-events: none;
}

.orbital-ready-text {
  font-family: 'Inter', system-ui, sans-serif;
  font-size: 32px;
  font-weight: 900;
  letter-spacing: 4px;
  color: var(--orbital-green);
  text-shadow: 0 0 20px var(--orbital-green);
}

.orbital-loader[data-state="complete"] .orbital-ready {
  opacity: 1;
  animation: readyGlitch 0.5s ease-in-out 3, fadeIn 0.3s ease;
}

/* ===========================================
   STEP INDICATORS
   =========================================== */

.orbital-steps {
  display: flex;
  align-items: center;
  gap: 8px;
  width: 100%;
  max-width: 420px;
}

.orbital-step {
  display: flex;
  align-items: center;
  gap: 8px;
  flex: 1;
  padding: 10px 12px;
  background: var(--orbital-surface);
  border: 1px solid var(--orbital-border);
  border-radius: 10px;
  transition: all var(--orbital-duration-normal) var(--orbital-ease-out);
}

.orbital-step-indicator {
  position: relative;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--orbital-bg);
  border: 2px solid var(--orbital-text-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: all var(--orbital-duration-normal) var(--orbital-ease-out);
}

.orbital-step-number {
  font-family: 'Inter', system-ui, sans-serif;
  font-size: 12px;
  font-weight: 600;
  color: var(--orbital-text-muted);
  transition: opacity var(--orbital-duration-fast);
}

.orbital-step-check {
  position: absolute;
  width: 14px;
  height: 14px;
  color: var(--orbital-green);
  opacity: 0;
  transform: scale(0);
  transition: all var(--orbital-duration-normal) var(--orbital-ease-bounce);
}

.orbital-step-content {
  display: flex;
  flex-direction: column;
  gap: 2px;
  min-width: 0;
}

.orbital-step-label {
  font-size: 9px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--orbital-text-muted);
}

.orbital-step-title {
  font-size: 12px;
  font-weight: 500;
  color: var(--orbital-text-secondary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* Step Connectors */
.orbital-step-connector {
  width: 20px;
  height: 2px;
  background: var(--orbital-border);
  border-radius: 1px;
  overflow: hidden;
  flex-shrink: 0;
}

.orbital-step-connector-fill {
  width: 0%;
  height: 100%;
  background: linear-gradient(90deg, var(--orbital-cyan), var(--orbital-green));
  transition: width 0.5s var(--orbital-ease-out);
}

/* Step States */
.orbital-step[data-state="pending"] { opacity: 0.5; }

.orbital-step[data-state="active"] {
  opacity: 1;
  border-color: rgba(0, 240, 255, 0.3);
  background: rgba(0, 240, 255, 0.05);
  animation: stepActivate 0.4s var(--orbital-ease-out);
}

.orbital-step[data-state="active"] .orbital-step-indicator {
  border-color: var(--orbital-cyan);
  box-shadow: 0 0 12px rgba(0, 240, 255, 0.4);
}

.orbital-step[data-state="active"] .orbital-step-number { color: var(--orbital-cyan); }
.orbital-step[data-state="active"] .orbital-step-label { color: var(--orbital-cyan); }
.orbital-step[data-state="active"] .orbital-step-title { color: var(--orbital-text-primary); }

.orbital-step[data-state="completed"] { opacity: 1; }

.orbital-step[data-state="completed"] .orbital-step-indicator {
  border-color: var(--orbital-green);
  background: rgba(0, 255, 148, 0.1);
}

.orbital-step[data-state="completed"] .orbital-step-number { opacity: 0; }
.orbital-step[data-state="completed"] .orbital-step-check { opacity: 1; transform: scale(1); }
.orbital-step[data-state="completed"] .orbital-step-label { color: var(--orbital-green); }
.orbital-step[data-state="completed"] .orbital-step-title { color: var(--orbital-text-primary); }

/* ===========================================
   PROGRESS DISPLAY
   =========================================== */

.orbital-progress-display {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
  max-width: 420px;
}

.orbital-progress-label {
  font-size: 13px;
  font-weight: 500;
  color: var(--orbital-text-secondary);
}

.orbital-progress-percent {
  font-size: 16px;
  font-weight: 700;
  color: var(--orbital-cyan);
  text-shadow: 0 0 10px rgba(0, 240, 255, 0.5);
  font-variant-numeric: tabular-nums;
}

.orbital-progress-bar-container { width: 100%; max-width: 420px; }

.orbital-progress-track {
  width: 100%;
  height: 6px;
  background: var(--orbital-surface);
  border-radius: 3px;
  overflow: hidden;
  border: 1px solid var(--orbital-border);
}

.orbital-progress-fill {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--orbital-cyan), var(--orbital-purple), var(--orbital-green));
  background-size: 200% 100%;
  border-radius: 3px;
  /* v13: Smoother progress bar transition */
  transition: width 0.6s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  animation: progressShimmer 2s linear infinite;
}

/* v13: Pulsing glow effect when progress is high */
.orbital-loader[data-progress-tier="high"] .orbital-progress-fill {
  box-shadow: 0 0 12px rgba(0, 240, 255, 0.6), 0 0 24px rgba(168, 85, 247, 0.3);
}

/* ===========================================
   CANCEL BUTTON
   =========================================== */

.orbital-cancel {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  background: transparent;
  border: 1px solid var(--orbital-border);
  border-radius: 8px;
  font-family: 'Inter', system-ui, sans-serif;
  font-size: 14px;
  font-weight: 500;
  color: var(--orbital-text-secondary);
  cursor: pointer;
  transition: all var(--orbital-duration-fast);
}

.orbital-cancel:hover {
  border-color: rgba(255, 68, 68, 0.5);
  color: #ff4444;
  background: rgba(255, 68, 68, 0.05);
}

.orbital-cancel:focus-visible {
  outline: 2px solid var(--orbital-cyan);
  outline-offset: 2px;
}

.orbital-cancel-icon { width: 16px; height: 16px; stroke: currentColor; }

/* ===========================================
   STEP DETAIL TEXT (v14)
   =========================================== */

.orbital-step-detail {
  font-family: 'Inter', system-ui, sans-serif;
  font-size: 13px;
  font-weight: 400;
  color: var(--orbital-text-secondary);
  text-align: center;
  margin: 8px 0;
  min-height: 18px;
  transition: color var(--orbital-duration-fast);
}

/* ===========================================
   ERROR STATE (v14)
   =========================================== */

.orbital-error {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 16px 20px;
  background: rgba(255, 68, 68, 0.08);
  border: 1px solid rgba(255, 68, 68, 0.3);
  border-radius: 12px;
  width: 100%;
  max-width: 420px;
  margin-top: 16px;
}

.orbital-error-icon {
  flex-shrink: 0;
  width: 40px;
  height: 40px;
  color: #ff4444;
}

.orbital-error-icon svg {
  width: 100%;
  height: 100%;
}

.orbital-error-content {
  flex: 1;
}

.orbital-error-code {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  font-weight: 600;
  color: #ff6666;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 4px;
}

.orbital-error-message {
  font-family: 'Inter', system-ui, sans-serif;
  font-size: 14px;
  font-weight: 400;
  color: var(--orbital-text-primary);
  line-height: 1.4;
}

/* Retry Button */
.orbital-retry {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 28px;
  background: linear-gradient(135deg, var(--orbital-cyan), var(--orbital-purple));
  border: none;
  border-radius: 10px;
  font-family: 'Inter', system-ui, sans-serif;
  font-size: 15px;
  font-weight: 600;
  color: white;
  cursor: pointer;
  transition: all var(--orbital-duration-fast);
  margin-top: 16px;
  box-shadow: 0 4px 16px rgba(0, 240, 255, 0.3);
}

.orbital-retry:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 24px rgba(0, 240, 255, 0.4);
}

.orbital-retry:active {
  transform: translateY(0);
}

.orbital-retry:focus-visible {
  outline: 2px solid var(--orbital-cyan);
  outline-offset: 2px;
}

.orbital-retry-icon {
  width: 18px;
  height: 18px;
  stroke: currentColor;
}

/* Error state styling */
.orbital-loader[data-state="error"] .orbital-core-inner {
  border-color: #ff4444;
  box-shadow: 0 0 30px rgba(255, 68, 68, 0.4);
}

.orbital-loader[data-state="error"] .orbital-progress-percent {
  color: #ff4444;
}

.orbital-loader[data-state="error"] .orbital-progress-fill,
.orbital-loader[data-state="error"] .orbital-progress-bar {
  background: linear-gradient(90deg, #ff4444, #ff6666);
}

.orbital-loader[data-state="error"] .orbital-cancel {
  display: none;
}

/* ===========================================
   COMPLETION STATE
   =========================================== */

.orbital-loader[data-state="complete"] .orbital-core-inner {
  border-color: var(--orbital-green);
  box-shadow: var(--orbital-glow-green);
}

.orbital-loader[data-state="complete"] .orbital-progress-percent { color: var(--orbital-green); }
.orbital-loader[data-state="complete"] .orbital-progress-fill { background: var(--orbital-green); }
.orbital-loader[data-state="complete"] .orbital-nodes { animation-duration: 2s; }

/* v13: Container pulse on completion */
.orbital-loader[data-state="complete"] .orbital-container {
  animation: successPulse 1s ease-in-out 3;
}

/* ===========================================
   RESPONSIVE
   =========================================== */

@media (max-width: 540px) {
  .orbital-container { padding: 24px 16px; gap: 24px; }
  .orbital-core-wrapper { width: 240px; height: 240px; }
  :root { --orbit-radius: 90px; }
  .orbital-node { width: 40px; height: 40px; margin: -20px; }
  .orbital-node-icon { font-size: 16px; }
  .orbital-core-inner { width: 64px; height: 64px; border-radius: 16px; }
  .orbital-core-text { font-size: 22px; }
  .orbital-steps { flex-wrap: wrap; gap: 6px; }
  .orbital-step { flex: 1 1 calc(50% - 6px); min-width: 140px; }
  .orbital-step-connector { display: none; }
  .orbital-ready-text { font-size: 24px; }
}

/* ===========================================
   ACCESSIBILITY
   =========================================== */

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

@media (prefers-reduced-motion: reduce) {
  .orbital-loader,
  .orbital-loader *,
  .orbital-loader *::before,
  .orbital-loader *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  .orbital-nodes { animation: none !important; }
  .orbital-node { animation: none !important; position: static; margin: 0; }
  .orbital-nodes { display: flex; justify-content: center; gap: 8px; }
}

@media (prefers-contrast: high) {
  .orbital-loader { background: #000; }
  .orbital-step, .orbital-core-inner { border-width: 2px; }
  .orbital-step[data-state="active"] { border-color: #00ffff; }
  .orbital-step[data-state="completed"] { border-color: #00ff00; }
}