:root {
  --bg-color: #0b0f19;
  --panel-bg: #1e293b66;
  --border-color: #ffffff1f;
  --accent-cyan: #00f2fe;
  --accent-blue: #4facfe;
  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --glass-blur: blur(16px);
  --neon-glow: 0 0 20px #00f2fe66;
}

body {
  background-color: var(--bg-color);
  color: var(--text-primary);
  background-image: radial-gradient(at 0% 0%, #4facfe26 0%, transparent 50%),
                    radial-gradient(at 100% 100%, #00f2fe1a 0%, transparent 50%);
  min-height: 100vh;
  margin: 0;
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  overflow-x: hidden;
}

h1, h2, h3, h4 {
  font-family: 'Outfit', sans-serif;
  margin: 0 0 1rem 0;
}

.glass-header {
  background: rgba(11, 15, 25, 0.8);
  backdrop-filter: var(--glass-blur);
  border-bottom: 1px solid var(--border-color);
  padding: 0.8rem 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  position: sticky;
  top: 0;
  z-index: 100;
}

.logo-area {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.header-logo {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  object-fit: cover;
}

.title-container {
  display: flex;
  align-items: baseline;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.app-title {
  font-family: 'Outfit', sans-serif;
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.02em;
}

.app-subtitle {
  color: var(--text-secondary);
  font-size: 0.85rem;
  font-weight: 400;
}

.nav-buttons {
  display: flex;
  gap: 0.75rem;
  align-items: center;
}

.nav-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  border-radius: 8px;
  font-weight: 600;
  font-size: 0.85rem;
  text-decoration: none;
  transition: all 0.2s ease;
}

.active-btn {
  background-color: #00d2f3;
  color: #0b0f19;
  border: none;
}

.active-btn:hover {
  background-color: #00f2fe;
  transform: translateY(-1px);
  box-shadow: 0 0 12px rgba(0, 210, 243, 0.4);
}

.outline-btn {
  background-color: rgba(255, 255, 255, 0.03);
  color: #e2e8f0;
  border: 1px solid rgba(255, 255, 255, 0.15);
}

.outline-btn:hover {
  background-color: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.25);
  color: #ffffff;
  transform: translateY(-1px);
}

.nav-icon {
  width: 15px;
  height: 15px;
}

.dashboard {
  display: grid;
  grid-template-columns: 350px 1fr;
  gap: 2rem;
  padding: 2rem;
  max-width: 1600px;
  margin: 0 auto;
}

.glass-card {
  background: var(--panel-bg);
  backdrop-filter: var(--glass-blur);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  padding: 1.5rem;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
}

.slider-group {
  margin-bottom: 2rem;
}

.slider-group h3 {
  font-size: 1.1rem;
  color: var(--accent-cyan);
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 0.5rem;
}

.slider-container {
  margin-bottom: 1rem;
}

.slider-container label {
  display: flex;
  justify-content: space-between;
  font-size: 0.9rem;
  margin-bottom: 0.5rem;
  color: var(--text-secondary);
}

.slider-container span {
  color: var(--text-primary);
  font-weight: 600;
  font-family: 'Outfit', sans-serif;
}

input[type=range] {
  width: 100%;
  appearance: none;
  background: transparent;
}

input[type=range]::-webkit-slider-runnable-track {
  width: 100%;
  height: 6px;
  background: var(--border-color);
  border-radius: 3px;
}

input[type=range]::-webkit-slider-thumb {
  appearance: none;
  width: 16px;
  height: 16px;
  background: var(--accent-cyan);
  border-radius: 50%;
  margin-top: -5px;
  box-shadow: var(--neon-glow);
  cursor: pointer;
  transition: transform 0.1s;
}

input[type=range]::-webkit-slider-thumb:hover {
  transform: scale(1.2);
}

.results-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1.5rem;
  margin-bottom: 2rem;
}

.result-card {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
}

.result-card h4 {
  font-size: 0.9rem;
  color: var(--text-secondary);
  font-weight: 500;
}

.neon-text {
  font-family: 'Outfit', sans-serif;
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--text-primary);
  text-shadow: var(--neon-glow);
  margin-bottom: 0.5rem;
}

.unit {
  font-size: 0.8rem;
  color: var(--text-secondary);
}

.chart-container {
  margin-bottom: 2rem;
  height: 400px;
}

.export-container {
  display: flex;
  flex-direction: column;
}

.export-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1rem;
}

.btn {
  background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
  color: var(--bg-color);
  border: none;
  padding: 0.5rem 1rem;
  border-radius: 8px;
  font-weight: 600;
  cursor: pointer;
  transition: opacity 0.2s, transform 0.2s;
}

.btn:hover {
  opacity: 0.9;
  transform: translateY(-1px);
}

textarea {
  width: 100%;
  height: 150px;
  background: rgba(0, 0, 0, 0.3);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  color: var(--accent-cyan);
  font-family: 'Courier New', Courier, monospace;
  padding: 1rem;
  resize: vertical;
  box-sizing: border-box;
}

@media (max-width: 1024px) {
  .dashboard {
    grid-template-columns: 1fr;
  }
}