:root {
  --bg-color: #0a0a0f;
  --text-primary: #f8f9fa;
  --text-secondary: #a0aab2;
  --accent-color: #6366f1;
  --accent-color-hover: #4f46e5;
  --gradient-start: #818cf8;
  --gradient-end: #c084fc;

  --glass-bg: rgba(255, 255, 255, 0.03);
  --glass-border: rgba(255, 255, 255, 0.08);
  --glass-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.3);

  --font-main: 'Inter', 'Noto Sans SC', system-ui, -apple-system, sans-serif;
}

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

body {
  font-family: var(--font-main);
  background-color: var(--bg-color);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  min-height: 100vh;
}

/* Background Animation */
.background-anim {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  z-index: -1;
  overflow: hidden;
  background: #050508;
}

.blob {
  position: absolute;
  filter: blur(80px);
  border-radius: 50%;
  opacity: 0.6;
  animation: float 20s infinite ease-in-out alternate;
}

.blob-1 {
  top: -10%;
  left: -10%;
  width: 50vw;
  height: 50vw;
  background: radial-gradient(circle, rgba(99, 102, 241, 0.3) 0%, rgba(0, 0, 0, 0) 70%);
  animation-delay: 0s;
}

.blob-2 {
  bottom: -20%;
  right: -10%;
  width: 60vw;
  height: 60vw;
  background: radial-gradient(circle, rgba(192, 132, 252, 0.2) 0%, rgba(0, 0, 0, 0) 70%);
  animation-delay: -5s;
}

.blob-3 {
  top: 40%;
  left: 50%;
  width: 40vw;
  height: 40vw;
  background: radial-gradient(circle, rgba(56, 189, 248, 0.2) 0%, rgba(0, 0, 0, 0) 70%);
  animation-delay: -10s;
}

@keyframes float {
  0% {
    transform: translate(0, 0) scale(1);
  }
  50% {
    transform: translate(5%, 5%) scale(1.1);
  }
  100% {
    transform: translate(-5%, -5%) scale(0.9);
  }
}

/* Layout */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Glassmorphism Utilities */
.glass-header {
  background: var(--glass-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--glass-border);
  border-radius: 100px;
  padding: 16px 32px;
  margin-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.glass-card {
  background: var(--glass-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--glass-border);
  border-radius: 24px;
  box-shadow: var(--glass-shadow);
}

/* Typography & Components */
.logo {
  font-size: 1.25rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 8px;
}

.logo span {
  font-weight: 400;
  color: var(--text-secondary);
  font-size: 1rem;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 24px;
}

.nav-links a {
  color: var(--text-primary);
  text-decoration: none;
  font-weight: 500;
  transition: color 0.3s;
}

.nav-links a:hover {
  color: var(--accent-color);
}

.btn-primary,
.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 24px;
  border-radius: 100px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
  text-decoration: none;
  border: none;
  font-family: var(--font-main);
  font-size: 0.95rem;
}

.btn-primary {
  background: var(--accent-color);
  color: white;
  box-shadow: 0 4px 14px 0 rgba(99, 102, 241, 0.39);
}

.btn-primary:hover {
  background: var(--accent-color-hover);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(99, 102, 241, 0.5);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.1);
  color: white;
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.15);
  transform: translateY(-2px);
}

.btn-large {
  padding: 16px 32px;
  font-size: 1.1rem;
}

.btn-full {
  width: 100%;
}

/* Hero Section */
.hero {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 85vh;
  gap: 60px;
}

.hero-content {
  flex: 1;
}

.badge {
  display: inline-block;
  padding: 6px 16px;
  background: rgba(99, 102, 241, 0.15);
  border: 1px solid rgba(99, 102, 241, 0.3);
  border-radius: 100px;
  font-size: 0.85rem;
  font-weight: 500;
  color: #a5b4fc;
  margin-bottom: 24px;
}

.hero-title {
  font-size: 4rem;
  line-height: 1.1;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 24px;
}

.gradient-text {
  background: linear-gradient(135deg, var(--gradient-start) 0%, var(--gradient-end) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: 1.25rem;
  color: var(--text-secondary);
  margin-bottom: 40px;
  max-width: 540px;
}

.hero-actions {
  display: flex;
  gap: 16px;
}

/* Mockup */
.hero-visual {
  flex: 1;
  display: flex;
  justify-content: center;
  perspective: 1000px;
}

.mockup {
  width: 100%;
  max-width: 500px;
  height: 380px;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  transform: rotateY(-15deg) rotateX(5deg);
  transition: transform 0.5s ease;
}

.mockup:hover {
  transform: rotateY(0) rotateX(0);
}

.mockup-header {
  height: 40px;
  background: rgba(0, 0, 0, 0.2);
  display: flex;
  align-items: center;
  padding: 0 16px;
  gap: 8px;
  border-bottom: 1px solid var(--glass-border);
}

.dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
}
.dot.red {
  background: #ff5f56;
}
.dot.yellow {
  background: #ffbd2e;
}
.dot.green {
  background: #27c93f;
}

.mockup-body {
  display: flex;
  flex: 1;
}

.mockup-sidebar {
  width: 80px;
  background: rgba(0, 0, 0, 0.2);
  border-right: 1px solid var(--glass-border);
}

.mockup-content {
  flex: 1;
  padding: 24px;
}

.mockup-line {
  height: 12px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 6px;
  margin-bottom: 12px;
}

.mockup-box {
  height: 120px;
  background: rgba(99, 102, 241, 0.1);
  border: 1px solid rgba(99, 102, 241, 0.2);
  border-radius: 12px;
}

.w-50 {
  width: 50%;
}
.w-75 {
  width: 75%;
}
.w-80 {
  width: 80%;
}
.w-100 {
  width: 100%;
}
.mt-md {
  margin-top: 24px;
}
.mt-lg {
  margin-top: 40px;
}

/* Features Section */
.features {
  padding: 80px 0;
}

.section-title {
  text-align: center;
  font-size: 2.5rem;
  margin-bottom: 60px;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 24px;
}

.feature-card {
  padding: 32px;
  transition:
    transform 0.3s ease,
    background 0.3s ease;
}

.feature-card:hover {
  transform: translateY(-8px);
  background: rgba(255, 255, 255, 0.05);
}

.feature-icon {
  font-size: 2.5rem;
  margin-bottom: 20px;
}

.feature-card h3 {
  font-size: 1.25rem;
  margin-bottom: 12px;
}

.feature-card p {
  color: var(--text-secondary);
}

/* Modal */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(8px);
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 1000;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}

.modal-overlay.active {
  opacity: 1;
  pointer-events: auto;
}

.modal-content {
  width: 100%;
  max-width: 440px;
  padding: 40px;
  position: relative;
  transform: scale(0.95);
  transition: transform 0.3s ease;
}

.modal-overlay.active .modal-content {
  transform: scale(1);
}

.modal-close {
  position: absolute;
  top: 20px;
  right: 20px;
  background: none;
  border: none;
  color: var(--text-secondary);
  font-size: 1.5rem;
  cursor: pointer;
  transition: color 0.3s;
}

.modal-close:hover {
  color: white;
}

.modal-header {
  text-align: center;
  margin-bottom: 32px;
}

.modal-header h2 {
  font-size: 1.75rem;
  margin-bottom: 8px;
}

.modal-header p {
  color: var(--text-secondary);
  font-size: 0.95rem;
}

.input-group {
  position: relative;
  margin-bottom: 24px;
}

.input-group input {
  width: 100%;
  padding: 16px 20px;
  background: rgba(0, 0, 0, 0.2);
  border: 1px solid var(--glass-border);
  border-radius: 12px;
  color: white;
  font-size: 1rem;
  outline: none;
  transition:
    border-color 0.3s,
    background 0.3s;
}

.input-group input:focus {
  border-color: var(--accent-color);
  background: rgba(0, 0, 0, 0.4);
}

.input-group label {
  position: absolute;
  top: -10px;
  left: 16px;
  background: var(--bg-color); /* Fallback */
  padding: 0 8px;
  font-size: 0.85rem;
  color: var(--text-secondary);
  border-radius: 4px;
}

/* Spinner */
.spinner {
  display: none;
  width: 20px;
  height: 20px;
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-radius: 50%;
  border-top-color: white;
  animation: spin 1s ease-in-out infinite;
}

.btn-primary.loading span {
  display: none;
}

.btn-primary.loading .spinner {
  display: block;
}

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

.error-message {
  color: #ff5f56;
  font-size: 0.85rem;
  margin-bottom: 16px;
  margin-top: -12px;
  display: none;
}

.download-success {
  display: none;
  text-align: center;
}

.success-icon {
  width: 60px;
  height: 60px;
  background: rgba(39, 201, 63, 0.1);
  color: #27c93f;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  margin: 0 auto 20px;
}

/* Responsive */
@media (max-width: 768px) {
  .hero {
    flex-direction: column;
    text-align: center;
    padding-top: 60px;
  }

  .hero-title {
    font-size: 2.5rem;
  }

  .hero-actions {
    justify-content: center;
  }

  .mockup {
    transform: none;
  }

  .nav-links {
    display: none; /* simple mobile nav handling */
  }
}