:root {
  --bg-primary: #0a0c10;
  --bg-secondary: #12161f;
  --bg-card: rgba(22, 27, 38, 0.7);
  --bg-card-hover: rgba(30, 37, 52, 0.85);
  --border-color: rgba(255, 255, 255, 0.08);
  --border-glow: rgba(59, 130, 246, 0.3);
  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --accent-blue: #3b82f6;
  --accent-blue-hover: #2563eb;
  --accent-cyan: #06b6d4;
  --accent-purple: #a855f7;
  --accent-green: #10b981;
  --accent-orange: #f59e0b;
  --accent-red: #ef4444;
  --font-sans: -apple-system, BlinkMacSystemFont, "SF Pro Display", "Segoe UI", Roboto, sans-serif;
  --font-mono: "SF Mono", Menlo, Monaco, Consolas, monospace;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  color-scheme: dark;
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  position: relative;
}

/* Background Ambient Glows */
.ambient-glow-1 {
  position: absolute;
  top: -150px;
  left: 50%;
  transform: translateX(-50%);
  width: 900px;
  height: 500px;
  background: radial-gradient(circle, rgba(59, 130, 246, 0.15) 0%, rgba(168, 85, 247, 0.08) 50%, transparent 80%);
  filter: blur(80px);
  pointer-events: none;
  z-index: 0;
}

.ambient-glow-2 {
  position: absolute;
  top: 1400px;
  right: 5%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(6, 182, 212, 0.1) 0%, transparent 70%);
  filter: blur(100px);
  pointer-events: none;
  z-index: 0;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  position: relative;
  z-index: 1;
}

/* Header & Nav */
header {
  position: sticky;
  top: 0;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  background: rgba(10, 12, 16, 0.75);
  border-bottom: 1px solid var(--border-color);
  z-index: 100;
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.logo-group {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
}

.logo-icon {
  width: 38px;
  height: 38px;
  background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  box-shadow: 0 4px 14px rgba(59, 130, 246, 0.35);
}

.logo-text {
  font-size: 22px;
  font-weight: 800;
  letter-spacing: -0.5px;
  background: linear-gradient(135deg, #ffffff, #cbd5e1);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.logo-tag {
  font-size: 11px;
  text-transform: uppercase;
  background: rgba(59, 130, 246, 0.15);
  color: var(--accent-blue);
  padding: 2px 6px;
  border-radius: 6px;
  font-weight: 700;
}

nav ul {
  display: flex;
  align-items: center;
  gap: 32px;
  list-style: none;
}

nav a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  transition: color 0.2s ease;
}

nav a:hover {
  color: var(--text-primary);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 16px;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 20px;
  border-radius: 10px;
  font-size: 14px;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  border: none;
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent-blue), #2563eb);
  color: #ffffff;
  box-shadow: 0 4px 16px rgba(37, 99, 235, 0.35);
}

.btn-primary:hover {
  background: linear-gradient(135deg, #2563eb, #1d4ed8);
  box-shadow: 0 6px 20px rgba(37, 99, 235, 0.5);
  transform: translateY(-1px);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.06);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
  backdrop-filter: blur(8px);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: rgba(255, 255, 255, 0.2);
}

.btn-lg {
  padding: 14px 28px;
  font-size: 16px;
  border-radius: 12px;
}

.btn-green {
  background: linear-gradient(135deg, #10b981, #059669);
  color: #ffffff;
  box-shadow: 0 4px 16px rgba(16, 185, 129, 0.35);
}

.btn-green:hover {
  background: linear-gradient(135deg, #059669, #047857);
  box-shadow: 0 6px 20px rgba(16, 185, 129, 0.5);
  transform: translateY(-1px);
}

/* Hero Section */
.hero {
  padding: 80px 0 60px;
  text-align: center;
}

.badge-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  background: rgba(59, 130, 246, 0.1);
  border: 1px solid rgba(59, 130, 246, 0.25);
  border-radius: 100px;
  color: #93c5fd;
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 24px;
}

.badge-dot {
  width: 8px;
  height: 8px;
  background-color: #3b82f6;
  border-radius: 50%;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(59, 130, 246, 0.7); }
  70% { transform: scale(1); box-shadow: 0 0 0 8px rgba(59, 130, 246, 0); }
  100% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(59, 130, 246, 0); }
}

.hero h1 {
  font-size: 56px;
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -1.5px;
  margin-bottom: 20px;
  max-width: 900px;
  margin-left: auto;
  margin-right: auto;
}

.gradient-text {
  background: linear-gradient(135deg, #60a5fa, #c084fc);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero p {
  font-size: 20px;
  color: var(--text-secondary);
  max-width: 720px;
  margin: 0 auto 36px;
  line-height: 1.5;
}

.hero-cta {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  margin-bottom: 24px;
}

.hero-meta {
  font-size: 13px;
  color: var(--text-muted);
}

/* Interactive Simulator */
.simulator-section {
  padding: 40px 0 80px;
}

.window-frame {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  overflow: hidden;
  box-shadow: 0 25px 60px -15px rgba(0, 0, 0, 0.7), 0 0 40px -10px rgba(59, 130, 246, 0.15);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
}

.window-header {
  background: rgba(18, 22, 31, 0.85);
  padding: 14px 20px;
  display: flex;
  align-items: center;
  border-bottom: 1px solid var(--border-color);
}

.window-controls {
  display: flex;
  gap: 8px;
}

.control-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
}

.control-dot.red { background: #ff5f56; }
.control-dot.yellow { background: #ffbd2e; }
.control-dot.green { background: #27c93f; }

.window-title {
  margin: 0 auto;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-secondary);
}

.simulator-body {
  padding: 36px;
}

.simulator-grid {
  display: grid;
  grid-template-columns: 1fr 1.3fr;
  gap: 36px;
  align-items: center;
}

.sim-gauge-box {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: 24px;
  background: rgba(10, 12, 16, 0.5);
  border-radius: 14px;
  border: 1px solid var(--border-color);
}

.gauge-circle {
  position: relative;
  width: 170px;
  height: 170px;
  margin-bottom: 20px;
}

.gauge-svg {
  width: 100%;
  height: 100%;
  transform: rotate(-90deg);
}

.gauge-bg {
  fill: none;
  stroke: rgba(255, 255, 255, 0.08);
  stroke-width: 10;
}

.gauge-fill {
  fill: none;
  stroke: url(#gauge-gradient);
  stroke-width: 10;
  stroke-linecap: round;
  stroke-dasharray: 440;
  stroke-dashoffset: 440;
  transition: stroke-dashoffset 0.8s ease;
}

.gauge-center-text {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  text-align: center;
}

.gauge-gigabytes {
  font-size: 32px;
  font-weight: 800;
  letter-spacing: -1px;
}

.gauge-label {
  font-size: 11px;
  color: var(--text-muted);
  text-transform: uppercase;
  font-weight: 600;
}

.sim-actions {
  display: flex;
  gap: 12px;
  width: 100%;
  margin-top: 16px;
}

.sim-actions .btn {
  flex: 1;
}

.sim-items-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.sim-item-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 18px;
  background: rgba(18, 22, 31, 0.6);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  transition: all 0.2s ease;
}

.sim-item-card:hover {
  background: var(--bg-card-hover);
  border-color: rgba(255, 255, 255, 0.15);
}

.sim-item-info {
  display: flex;
  align-items: center;
  gap: 14px;
}

.sim-item-icon {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
}

.sim-item-title {
  font-size: 14px;
  font-weight: 600;
}

.sim-item-path {
  font-size: 11px;
  color: var(--text-muted);
  font-family: var(--font-mono);
}

.sim-item-size {
  font-size: 14px;
  font-weight: 700;
  color: #60a5fa;
}

.sim-item-card.purged .sim-item-size {
  color: var(--accent-green);
  text-decoration: line-through;
}

/* Comparison Section */
.comparison-section {
  padding: 80px 0;
}

.section-header {
  text-align: center;
  margin-bottom: 56px;
}

.section-header h2 {
  font-size: 38px;
  font-weight: 800;
  letter-spacing: -1px;
  margin-bottom: 12px;
}

.section-header p {
  font-size: 18px;
  color: var(--text-secondary);
}

.comparison-table-wrapper {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  overflow: hidden;
}

.comparison-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
}

.comparison-table th,
.comparison-table td {
  padding: 20px 24px;
  border-bottom: 1px solid var(--border-color);
}

.comparison-table th {
  background: rgba(18, 22, 31, 0.9);
  font-size: 14px;
  font-weight: 700;
  color: var(--text-secondary);
}

.comparison-table th.highlight-col,
.comparison-table td.highlight-col {
  background: rgba(59, 130, 246, 0.06);
  border-left: 1px solid rgba(59, 130, 246, 0.2);
  border-right: 1px solid rgba(59, 130, 246, 0.2);
}

.check { color: var(--accent-green); font-weight: bold; }
.cross { color: var(--accent-red); font-weight: bold; }

/* Features Grid */
.features-section {
  padding: 80px 0;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  padding: 32px;
  transition: all 0.3s ease;
}

.feature-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-glow);
  box-shadow: 0 12px 30px -10px rgba(59, 130, 246, 0.2);
}

.feature-icon-box {
  width: 48px;
  height: 48px;
  background: rgba(59, 130, 246, 0.12);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  margin-bottom: 20px;
}

.feature-card h3 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 10px;
}

.feature-card p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* Pricing Section */
.pricing-section {
  padding: 80px 0 100px;
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  max-width: 1080px;
  margin: 0 auto;
}

.pricing-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 20px;
  padding: 36px;
  display: flex;
  flex-direction: column;
  position: relative;
  transition: all 0.3s ease;
}

.pricing-card.featured {
  background: rgba(22, 27, 44, 0.9);
  border-color: var(--accent-blue);
  box-shadow: 0 20px 40px -15px rgba(59, 130, 246, 0.3);
  transform: scale(1.04);
}

.featured-ribbon {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: linear-gradient(135deg, var(--accent-blue), var(--accent-purple));
  color: white;
  font-size: 11px;
  font-weight: 800;
  padding: 4px 14px;
  border-radius: 100px;
  letter-spacing: 0.5px;
  text-transform: uppercase;
}

.plan-name {
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 8px;
}

.plan-desc {
  font-size: 14px;
  color: var(--text-secondary);
  margin-bottom: 24px;
  min-height: 42px;
}

.plan-price {
  font-size: 46px;
  font-weight: 800;
  letter-spacing: -1px;
  margin-bottom: 4px;
}

.plan-period {
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 28px;
}

.plan-features {
  list-style: none;
  margin-bottom: 32px;
  flex-grow: 1;
}

.plan-features li {
  font-size: 14px;
  color: var(--text-secondary);
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.plan-features li span {
  color: var(--accent-green);
  font-weight: bold;
}

/* Footer */
footer {
  border-top: 1px solid var(--border-color);
  padding: 60px 0 40px;
  background: rgba(10, 12, 16, 0.9);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 40px;
}

.footer-copy {
  text-align: center;
  font-size: 13px;
  color: var(--text-muted);
  padding-top: 24px;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
}

/* Responsive */
@media (max-width: 900px) {
  .hero h1 { font-size: 40px; }
  .simulator-grid { grid-template-columns: 1fr; }
  .features-grid { grid-template-columns: 1fr; }
  .pricing-grid { grid-template-columns: 1fr; max-width: 440px; }
  .pricing-card.featured { transform: scale(1); }
  .footer-grid { grid-template-columns: 1fr; }
}