:root {
  --primary-color: #4a9eff;
  --secondary-color: #0066cc;
  --accent-color: #00d4ff;
  --bg-primary: #000;
  --bg-secondary: #1a1a2e;
  --bg-tertiary: #16213e;
  --text-primary: #fff;
  --text-secondary: rgba(255, 255, 255, 0.8);
  --border-color: rgba(74, 158, 255, 0.2);
  --card-bg: rgba(255, 255, 255, 0.05);
}

[data-theme="light"] {
  --primary-color: #2563eb;
  --secondary-color: #1d4ed8;
  --accent-color: #0ea5e9;
  --bg-primary: #f8fafc;
  --bg-secondary: #e2e8f0;
  --bg-tertiary: #cbd5e1;
  --text-primary: #1e293b;
  --text-secondary: #475569;
  --border-color: rgba(37, 99, 235, 0.2);
  --card-bg: rgba(255, 255, 255, 0.8);
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: "Outfit", sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  overflow-x: hidden;
  line-height: 1.6;
  transition: all 0.3s ease;
}

/* Background espacial */
.space-bg {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: radial-gradient(
    ellipse at center,
    var(--bg-secondary) 0%,
    var(--bg-tertiary) 25%,
    #0f0f23 50%,
    var(--bg-primary) 100%
  );
  z-index: -3;
  transition: all 0.3s ease;
}

[data-theme="light"] .space-bg {
  background: radial-gradient(ellipse at center, #e0f2fe 0%, #bae6fd 25%, #7dd3fc 50%, var(--bg-primary) 100%);
}

.stars {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -2;
  opacity: 1;
  transition: opacity 0.3s ease;
}

[data-theme="light"] .stars {
  opacity: 0.3;
}

/* Header */
header {
  position: fixed;
  top: 0;
  width: 100%;
  padding: 1rem 2rem;
  background: rgba(0, 0, 0, 0.8);
  backdrop-filter: blur(10px);
  z-index: 1000;
  transition: all 0.3s ease;
}

[data-theme="light"] header {
  background: rgba(26, 26, 46, 0.95);
  backdrop-filter: blur(10px);
}

nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  max-width: 1400px;
  margin: 0 auto;
}

.logo {
  height: 40px;
}

.nav-center {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.nav-links {
  display: flex;
  list-style: none;
  gap: 2rem;
}

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

[data-theme="light"] .nav-links a {
  color: #fff;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--primary-color);
}

.nav-right {
  display: flex;
  align-items: center;
  gap: 1rem;
}

/* Theme switch */
.theme-switch {
  position: relative;
  width: 50px;
  height: 26px;
  background: var(--bg-secondary);
  border-radius: 13px;
  cursor: pointer;
  transition: all 0.3s ease;
  border: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 4px;
}

.theme-icon {
  width: 14px;
  height: 14px;
  stroke: var(--text-secondary);
  transition: all 0.3s ease;
}

.sun-icon {
  opacity: 0;
}

[data-theme="light"] .sun-icon {
  opacity: 1;
}

[data-theme="light"] .moon-icon {
  opacity: 0;
}

/* Language selector */
.language-selector {
  display: flex;
  gap: 0.5rem;
}

.lang-btn {
  padding: 0.25rem 0.5rem;
  background: transparent;
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  border-radius: 5px;
  cursor: pointer;
  font-size: 0.8rem;
  transition: all 0.3s ease;
}

.lang-btn.active,
.lang-btn:hover {
  background: var(--primary-color);
  color: white;
  border-color: var(--primary-color);
}

/* Auth buttons */
.auth-buttons {
  display: flex;
  gap: 1rem;
}

.btn-secondary {
  padding: 0.5rem 1rem;
  background: transparent;
  border: 1px solid var(--primary-color);
  color: var(--primary-color);
  border-radius: 25px;
  text-decoration: none;
  font-weight: 500;
  transition: all 0.3s ease;
}

[data-theme="light"] .btn-secondary {
  color: #fff;
}

.btn-secondary:hover {
  background: var(--primary-color);
  color: white;
}

.btn-primary {
  padding: 0.5rem 1rem;
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  color: white;
  border: none;
  border-radius: 25px;
  text-decoration: none;
  font-weight: 500;
  transition: all 0.3s ease;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(74, 158, 255, 0.4);
}

/* Form styles */
.form-group {
  margin-bottom: 1.5rem;
}

.form-group label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 500;
  color: var(--text-primary);
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 1rem;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid var(--border-color);
  border-radius: 10px;
  color: var(--text-primary);
  font-family: inherit;
  transition: all 0.3s ease;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(74, 158, 255, 0.1);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--text-secondary);
}

/* CTA Button */
.cta-button {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 1rem 2rem;
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  color: white;
  text-decoration: none;
  border: none;
  border-radius: 50px;
  font-weight: 600;
  transition: all 0.3s ease;
  box-shadow: 0 4px 20px rgba(74, 158, 255, 0.4);
  cursor: pointer;
  font-family: inherit;
}

.cta-button:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(74, 158, 255, 0.6);
}

.cta-button.secondary {
  background: transparent;
  border: 2px solid var(--primary-color);
  color: var(--primary-color);
}

.cta-button.secondary:hover {
  background: var(--primary-color);
  color: white;
}

/* Order summary */
.order-summary {
  background: rgba(74, 158, 255, 0.1);
  border: 1px solid var(--border-color);
  border-radius: 15px;
  padding: 1.5rem;
  margin-top: 2rem;
}

.summary-item {
  display: flex;
  justify-content: space-between;
  padding: 0.5rem 0;
  border-bottom: 1px solid var(--border-color);
}

.summary-item:last-child {
  border-bottom: none;
}

.summary-item.total {
  font-weight: 600;
  font-size: 1.1rem;
  color: var(--primary-color);
  border-top: 2px solid var(--border-color);
  margin-top: 0.5rem;
  padding-top: 1rem;
}

/* Responsive */
@media (max-width: 768px) {
  .nav-center,
  .nav-right {
    display: none;
  }

  .purchase-container {
    padding: 6rem 1rem 2rem;
  }

  .purchase-header h1 {
    font-size: 2rem;
  }
}

/* Purchase page styles */
.purchase-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 8rem 2rem 4rem;
  display: grid;
  grid-template-columns: 1fr 350px;
  gap: 3rem;
}

.purchase-header {
  grid-column: 1 / -1;
  text-align: center;
  margin-bottom: 2rem;
}

.purchase-header h1 {
  font-size: 2.5rem;
  color: var(--text-primary);
  margin-bottom: 1rem;
}

.purchase-header p {
  font-size: 1.1rem;
  color: var(--text-secondary);
}

.info-banners {
  grid-column: 1 / -1;
  display: flex;
  justify-content: center;
  gap: 2rem;
  margin-bottom: 3rem;
}

.info-banner {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 1rem 1.5rem;
  background: rgba(74, 158, 255, 0.1);
  border: 1px solid var(--border-color);
  border-radius: 25px;
  color: var(--primary-color);
  font-weight: 500;
}

.purchase-form {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.form-section {
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: 15px;
  padding: 2rem;
}

.form-section h2 {
  color: var(--primary-color);
  margin-bottom: 1.5rem;
  font-size: 1.3rem;
}

.plugin-selector select {
  width: 100%;
  padding: 1rem;
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: 10px;
  color: var(--text-primary);
  font-size: 1rem;
}

.payment-methods {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.payment-method {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  padding: 1rem;
  background: var(--bg-primary);
  border: 2px solid var(--border-color);
  border-radius: 10px;
  cursor: pointer;
  transition: all 0.3s ease;
}

.payment-method.active {
  border-color: var(--primary-color);
  background: rgba(74, 158, 255, 0.1);
}

.card-fields {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.form-row {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 1rem;
}

/* Responsive */
@media (max-width: 768px) {
  .purchase-container {
    grid-template-columns: 1fr;
    padding: 6rem 1rem 2rem;
  }

  .info-banners {
    flex-direction: column;
    align-items: center;
  }

  .payment-methods {
    grid-template-columns: 1fr;
  }

  .form-row {
    grid-template-columns: 1fr;
  }
}