/* Modern Web Best Practices & Design Tokens */
:root {
  color-scheme: light dark;

  /* Typography */
  --font-sans: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;

  /* Color Tokens using light-dark() with Oklch */
  --bg-color-dark: oklch(14% 0.02 260);
  --bg-color-light: oklch(98% 0.01 260);
  --bg-color: light-dark(var(--bg-color-light), var(--bg-color-dark));

  --card-bg-dark: oklch(18% 0.025 260 / 65%);
  --card-bg-light: oklch(100% 0 0 / 70%);
  --card-bg: light-dark(var(--card-bg-light), var(--card-bg-dark));

  --border-color-dark: oklch(30% 0.03 260 / 40%);
  --border-color-light: oklch(88% 0.02 260 / 60%);
  --border-color: light-dark(var(--border-color-light), var(--border-color-dark));

  --text-primary-dark: oklch(96% 0.01 260);
  --text-primary-light: oklch(20% 0.02 260);
  --text-primary: light-dark(var(--text-primary-light), var(--text-primary-dark));

  --text-secondary-dark: oklch(72% 0.02 260);
  --text-secondary-light: oklch(46% 0.02 260);
  --text-secondary: light-dark(var(--text-secondary-light), var(--text-secondary-dark));

  --text-muted-dark: oklch(52% 0.02 260);
  --text-muted-light: oklch(62% 0.02 260);
  --text-muted: light-dark(var(--text-muted-light), var(--text-muted-dark));

  --accent-cyan: oklch(78% 0.16 205);
  --accent-purple: oklch(70% 0.22 300);
  --accent-emerald: oklch(76% 0.17 155);

  --status-pill-bg-dark: oklch(22% 0.04 155 / 35%);
  --status-pill-bg-light: oklch(92% 0.06 155 / 45%);
  --status-pill-bg: light-dark(var(--status-pill-bg-light), var(--status-pill-bg-dark));

  --status-pill-border-dark: oklch(50% 0.12 155 / 30%);
  --status-pill-border-light: oklch(60% 0.14 155 / 35%);
  --status-pill-border: light-dark(var(--status-pill-border-light), var(--status-pill-border-dark));

  --track-bg-dark: oklch(24% 0.02 260 / 60%);
  --track-bg-light: oklch(92% 0.02 260 / 60%);
  --track-bg: light-dark(var(--track-bg-light), var(--track-bg-dark));

  accent-color: var(--accent-cyan);
}

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

html, body {
  min-height: 100vh;
  min-height: 100dvh;
  font-family: var(--font-sans);
  background-color: var(--bg-color);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Background Ambient Lighting */
.ambient-glow {
  position: fixed;
  border-radius: 50%;
  filter: blur(120px);
  pointer-events: none;
  z-index: 0;
  opacity: 0.55;
  transition: opacity 0.5s ease;
}

.glow-top {
  top: -15vw;
  right: -10vw;
  width: 45vw;
  height: 45vw;
  background: radial-gradient(circle, var(--accent-cyan) 0%, transparent 70%);
}

.glow-bottom {
  bottom: -15vw;
  left: -10vw;
  width: 50vw;
  height: 50vw;
  background: radial-gradient(circle, var(--accent-purple) 0%, transparent 70%);
}

/* Subtle Grid Texture */
.grid-overlay {
  position: fixed;
  inset: 0;
  background-image: 
    linear-gradient(to right, light-dark(rgba(0, 0, 0, 0.04), rgba(255, 255, 255, 0.04)) 1px, transparent 1px),
    linear-gradient(to bottom, light-dark(rgba(0, 0, 0, 0.04), rgba(255, 255, 255, 0.04)) 1px, transparent 1px);
  background-size: 40px 40px;
  mask-image: radial-gradient(ellipse at center, black 40%, transparent 85%);
  -webkit-mask-image: radial-gradient(ellipse at center, black 40%, transparent 85%);
  pointer-events: none;
  z-index: 1;
}

/* Page Layout Container */
.page-container {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
  min-height: 100dvh;
  padding: clamp(1.25rem, 4vw, 3rem);
}

/* Interactive Glass Card */
.glass-card {
  position: relative;
  width: 100%;
  max-width: 680px;
  background: var(--card-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--border-color);
  border-radius: 24px;
  padding: clamp(1.75rem, 5vw, 3rem);
  box-shadow: 
    0 20px 40px -15px light-dark(rgba(0, 0, 0, 0.06), rgba(0, 0, 0, 0.4)),
    inset 0 1px 0 light-dark(rgba(255, 255, 255, 0.8), rgba(255, 255, 255, 0.1));
  overflow: hidden;
  transition: transform 0.25s ease, border-color 0.25s ease;
}

/* Dynamic Spotlight Glow within Card */
.card-spotlight {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  background: radial-gradient(
    600px circle at var(--mouse-x, 50%) var(--mouse-y, 50%),
    light-dark(rgba(0, 0, 0, 0.03), rgba(255, 255, 255, 0.06)),
    transparent 60%
  );
  z-index: 0;
}

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

/* Status Pill */
.status-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.625rem;
  padding: 0.4rem 0.85rem;
  background-color: var(--status-pill-bg);
  border: 1px solid var(--status-pill-border);
  border-radius: 9999px;
  margin-bottom: 1.5rem;
}

.pulse-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--accent-emerald);
  box-shadow: 0 0 12px var(--accent-emerald);
  animation: pulse-ring 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

@keyframes pulse-ring {
  0%, 100% {
    opacity: 1;
    transform: scale(1);
  }
  50% {
    opacity: 0.4;
    transform: scale(1.15);
  }
}

.status-text {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.05em;
  color: var(--accent-emerald);
}

/* Headline & Text */
.content-header {
  margin-bottom: 2rem;
}

.headline {
  font-size: clamp(2rem, 5vw, 2.75rem);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.03em;
  margin-bottom: 0.85rem;
}

.gradient-text {
  background: linear-gradient(135deg, var(--accent-cyan), var(--accent-purple));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.subheadline {
  font-size: clamp(0.95rem, 2vw, 1.05rem);
  color: var(--text-secondary);
  max-width: 540px;
  line-height: 1.6;
}

/* Progress Section */
.progress-section {
  background: light-dark(rgba(0, 0, 0, 0.02), rgba(255, 255, 255, 0.03));
  border: 1px solid var(--border-color);
  border-radius: 16px;
  padding: 1.25rem;
  margin-bottom: 1.75rem;
}

.progress-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.75rem;
}

.progress-label {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-secondary);
}

.progress-value {
  font-family: var(--font-mono);
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--accent-cyan);
}

.progress-track {
  width: 100%;
  height: 6px;
  background-color: var(--track-bg);
  border-radius: 9999px;
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  min-width: 16px;
  background: linear-gradient(90deg, var(--accent-cyan), var(--accent-purple));
  border-radius: 9999px;
  box-shadow: 0 0 12px var(--accent-cyan);
  transition: width 1.2s cubic-bezier(0.22, 1, 0.36, 1);
  position: relative;
}

.progress-fill::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.4), transparent);
  animation: shimmer 2.5s infinite;
}

@keyframes shimmer {
  0% { transform: translateX(-100%); }
  100% { transform: translateX(100%); }
}

/* Milestones Grid */
.milestones-grid {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin-bottom: 2rem;
}

.milestone-item {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 0.85rem 1rem;
  border-radius: 12px;
  background: light-dark(rgba(0, 0, 0, 0.015), rgba(255, 255, 255, 0.02));
  border: 1px solid light-dark(rgba(0, 0, 0, 0.05), rgba(255, 255, 255, 0.05));
  transition: background 0.2s ease, border-color 0.2s ease;
}

.milestone-item:hover {
  background: light-dark(rgba(0, 0, 0, 0.03), rgba(255, 255, 255, 0.04));
  border-color: light-dark(rgba(0, 0, 0, 0.1), rgba(255, 255, 255, 0.1));
}

.milestone-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border-radius: 8px;
  flex-shrink: 0;
}

.milestone-item.completed .milestone-icon {
  background-color: light-dark(oklch(90% 0.1 155 / 40%), oklch(25% 0.08 155 / 40%));
  color: var(--accent-emerald);
}

.milestone-item.active .milestone-icon {
  background-color: light-dark(oklch(90% 0.1 205 / 40%), oklch(25% 0.08 205 / 40%));
  color: var(--accent-cyan);
}

.spinner-dot {
  width: 10px;
  height: 10px;
  border: 2px solid var(--accent-cyan);
  border-top-color: transparent;
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

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

.milestone-item.pending .milestone-icon {
  background-color: light-dark(rgba(0, 0, 0, 0.05), rgba(255, 255, 255, 0.05));
  color: var(--text-muted);
}

.milestone-content {
  display: flex;
  flex-direction: column;
}

.milestone-title {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-primary);
}

.milestone-status {
  font-size: 0.75rem;
  color: var(--text-muted);
}

/* Telemetry Bar */
.telemetry-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border-color);
  font-size: 0.75rem;
}

.telemetry-item {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}

.telemetry-label {
  font-size: 0.65rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  color: var(--text-muted);
}

.telemetry-value {
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--text-secondary);
}

.telemetry-divider {
  width: 1px;
  height: 28px;
  background-color: var(--border-color);
}

.font-mono {
  font-family: var(--font-mono);
}

.text-success {
  color: var(--accent-emerald) !important;
}

/* Brand Footnote */
.brand-footnote {
  margin-top: 1.5rem;
  font-size: 0.75rem;
  color: var(--text-muted);
  text-align: center;
  letter-spacing: 0.02em;
}

/* Accessibility: Reduced Motion */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  .card-spotlight {
    display: none;
  }
}

/* Responsive adjustments */
@media (max-width: 520px) {
  .glass-card {
    padding: 1.5rem;
    border-radius: 20px;
  }
  .telemetry-bar {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.75rem;
  }
  .telemetry-divider {
    display: none;
  }
}