/* ========================================
   MOT Checker - Project Networks Theme
   ======================================== */

/* CSS Custom Properties - Matching Main Site */
:root {
  --color-background: #0a0a0f;
  --color-surface: #12121a;
  --color-surface-alt: #1a1a24;
  --color-surface-elevated: #22222e;
  
  --color-primary: #db01f9;
  --color-primary-light: #ff3cf5;
  --color-primary-dark: #a500c7;
  --color-secondary: #0071f8;
  --color-secondary-light: #3d9eff;
  --color-accent: #00f5ff;
  
  --gradient-primary: linear-gradient(135deg, #db01f9 0%, #0071f8 100%);
  --gradient-primary-reversed: linear-gradient(135deg, #0071f8 0%, #db01f9 100%);
  --gradient-accent: linear-gradient(135deg, #ff3cf5 0%, #00f5ff 100%);
  
  --color-text: #ffffff;
  --color-text-muted: rgba(255, 255, 255, 0.8);
  --color-text-subtle: rgba(255, 255, 255, 0.6);
  --color-border: rgba(255, 255, 255, 0.08);
  --color-border-hover: rgba(255, 255, 255, 0.16);
  
  --font-primary: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-display: "Poppins", var(--font-primary);
  
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-md: 1.125rem;
  --font-size-lg: 1.25rem;
  --font-size-xl: 1.5rem;
  --font-size-2xl: 2rem;
  --font-size-3xl: 2.5rem;
  --font-size-4xl: 3.5rem;
  
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.5rem;
  --space-6: 2rem;
  --space-7: 2.5rem;
  --space-8: 3rem;
  --space-9: 4rem;
  --space-10: 5rem;
  
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-2xl: 32px;
  --radius-full: 9999px;
  
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.2);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.3);
  --shadow-glow: 0 0 30px rgba(219, 1, 249, 0.3);
  
  --header-height: 80px;
  --container-width: 1200px;
  
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 300ms cubic-bezier(0.4, 0, 0.2, 1);
}

/* Base Styles */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition-base);
}

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

/* Background Effects */
.noise-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 1;
  pointer-events: none;
  opacity: 0.04;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 400 400' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)' opacity='1'/%3E%3C/svg%3E");
}

.gradient-bg {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 0;
  pointer-events: none;
  overflow: hidden;
}

.gradient-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.3;
  animation: float 20s ease-in-out infinite;
}

.orb-1 {
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, var(--color-primary) 0%, transparent 70%);
  top: -200px;
  right: -200px;
  animation-delay: 0s;
}

.orb-2 {
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, var(--color-secondary) 0%, transparent 70%);
  bottom: -150px;
  left: -150px;
  animation-delay: 5s;
}

.orb-3 {
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, var(--color-accent) 0%, transparent 70%);
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  animation-delay: 10s;
}

@keyframes float {
  0%, 100% { transform: translate(0, 0) scale(1); }
  25% { transform: translate(50px, -50px) scale(1.1); }
  50% { transform: translate(-30px, 30px) scale(0.9); }
  75% { transform: translate(30px, 50px) scale(1.05); }
}

/* Container */
.container {
  width: 100%;
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 var(--space-5);
  position: relative;
  z-index: 2;
}

/* Preloader */
.js-preloader {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--color-background);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9999;
  transition: opacity 0.5s ease, visibility 0.5s ease;
}

.js-preloader.loaded {
  opacity: 0;
  visibility: hidden;
}

.preloader-inner {
  text-align: center;
}

.preloader-logo {
  font-size: var(--font-size-4xl);
  font-weight: 800;
  font-family: var(--font-display);
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: var(--space-4);
  animation: pulse 2s ease-in-out infinite;
}

.preloader-spinner {
  width: 50px;
  height: 50px;
  border: 4px solid var(--color-border);
  border-top-color: var(--color-primary);
  border-radius: 50%;
  animation: spin 1s linear infinite;
  margin: 0 auto;
}

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

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.8; transform: scale(1.05); }
}

/* Navigation */
.main-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  background: rgba(10, 10, 15, 0.8);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--color-border);
  z-index: 1000;
  transition: all var(--transition-base);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.logo {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-weight: 700;
  font-size: var(--font-size-lg);
  font-family: var(--font-display);
}

.logo-text {
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.logo-badge {
  background: var(--gradient-primary);
  color: white;
  padding: var(--space-1) var(--space-2);
  border-radius: var(--radius-sm);
  font-size: var(--font-size-xs);
  font-weight: 600;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-6);
}

.nav-link {
  position: relative;
  font-weight: 500;
  font-size: var(--font-size-sm);
  padding: var(--space-2) 0;
  transition: color var(--transition-base);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--gradient-primary);
  transition: width var(--transition-base);
}

.nav-link:hover::after,
.nav-link.active::after {
  width: 100%;
}

.mobile-menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
}

.mobile-menu-toggle span {
  width: 25px;
  height: 2px;
  background: var(--color-text);
  transition: all var(--transition-base);
}

/* Hero Section */
.hero {
  padding: calc(var(--header-height) + var(--space-10)) 0 var(--space-10);
  text-align: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  background: rgba(0, 245, 255, 0.1);
  border: 1px solid rgba(0, 245, 255, 0.3);
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-full);
  color: var(--color-accent);
  font-size: var(--font-size-sm);
  font-weight: 600;
  margin-bottom: var(--space-4);
}

.hero-title {
  font-size: var(--font-size-4xl);
  font-weight: 800;
  font-family: var(--font-display);
  margin-bottom: var(--space-3);
  line-height: 1.1;
}

.gradient-text {
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: var(--font-size-xl);
  color: var(--color-text-muted);
  margin-bottom: var(--space-4);
}

.hero-text {
  font-size: var(--font-size-md);
  color: var(--color-text-subtle);
  max-width: 700px;
  margin: 0 auto var(--space-8);
  line-height: 1.7;
}

/* Checker Card */
.checker-card {
  max-width: 600px;
  margin: 0 auto;
  background: rgba(255, 255, 255, 0.03);
  backdrop-filter: blur(20px);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-2xl);
  padding: var(--space-7);
  box-shadow: var(--shadow-lg);
}

.checker-tabs {
  display: flex;
  gap: var(--space-3);
  margin-bottom: var(--space-6);
  background: rgba(255, 255, 255, 0.05);
  padding: var(--space-2);
  border-radius: var(--radius-lg);
}

.tab-btn {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-4);
  background: transparent;
  border: none;
  border-radius: var(--radius-md);
  color: var(--color-text-subtle);
  font-family: var(--font-primary);
  font-size: var(--font-size-sm);
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-base);
}

.tab-btn:hover {
  color: var(--color-text);
  background: rgba(255, 255, 255, 0.05);
}

.tab-btn.active {
  background: var(--gradient-primary);
  color: white;
}

.tab-content {
  display: none;
}

.tab-content.active {
  display: block;
}

.checker-form {
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.form-group label {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-text-muted);
}

.input-with-icon {
  position: relative;
}

.input-with-icon svg {
  position: absolute;
  right: var(--space-4);
  top: 50%;
  transform: translateY(-50%);
  color: var(--color-text-subtle);
  pointer-events: none;
}

.form-input {
  width: 100%;
  padding: var(--space-4);
  padding-right: var(--space-10);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  color: var(--color-text);
  font-family: var(--font-primary);
  font-size: var(--font-size-base);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 2px;
  transition: all var(--transition-base);
}

.form-input:focus {
  outline: none;
  border-color: var(--color-primary);
  background: rgba(255, 255, 255, 0.08);
  box-shadow: 0 0 0 3px rgba(219, 1, 249, 0.1);
}

.form-input::placeholder {
  text-transform: none;
  letter-spacing: normal;
  color: var(--color-text-subtle);
}

.form-hint {
  font-size: var(--font-size-xs);
  color: var(--color-text-subtle);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  border-radius: var(--radius-full);
  font-family: var(--font-primary);
  font-size: var(--font-size-base);
  font-weight: 600;
  text-align: center;
  cursor: pointer;
  transition: all var(--transition-base);
  border: none;
  text-decoration: none;
}

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

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-glow);
}

.btn-outline {
  background: transparent;
  border: 2px solid var(--color-border);
  color: var(--color-text);
}

.btn-outline:hover {
  border-color: var(--color-primary);
  background: rgba(219, 1, 249, 0.1);
}

.btn-large {
  padding: var(--space-4) var(--space-8);
  font-size: var(--font-size-md);
}

.btn-glow {
  box-shadow: 0 4px 20px rgba(219, 1, 249, 0.2);
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none !important;
}

.data-notice {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-top: var(--space-6);
  padding: var(--space-4);
  background: rgba(0, 245, 255, 0.05);
  border: 1px solid rgba(0, 245, 255, 0.2);
  border-radius: var(--radius-lg);
  font-size: var(--font-size-xs);
  color: var(--color-text-subtle);
}

.data-notice svg {
  flex-shrink: 0;
  color: var(--color-accent);
}

/* Results Section */
.results-section {
  padding: var(--space-10) 0;
}

.result-card {
  background: rgba(255, 255, 255, 0.03);
  backdrop-filter: blur(20px);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-7);
  margin-bottom: var(--space-6);
}

.result-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-6);
  padding-bottom: var(--space-4);
  border-bottom: 1px solid var(--color-border);
}

.result-registration {
  font-size: var(--font-size-2xl);
  font-weight: 800;
  font-family: var(--font-display);
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.result-badge {
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-full);
  font-size: var(--font-size-sm);
  font-weight: 600;
}

.result-badge.success {
  background: rgba(34, 197, 94, 0.1);
  color: #22c55e;
  border: 1px solid rgba(34, 197, 94, 0.3);
}

.result-badge.warning {
  background: rgba(234, 179, 8, 0.1);
  color: #eab308;
  border: 1px solid rgba(234, 179, 8, 0.3);
}

.result-badge.danger {
  background: rgba(239, 68, 68, 0.1);
  color: #ef4444;
  border: 1px solid rgba(239, 68, 68, 0.3);
}

/* How It Works */
.how-it-works-section {
  padding: var(--space-10) 0;
}

.section-header {
  text-align: center;
  margin-bottom: var(--space-8);
}

.section-title {
  font-size: var(--font-size-3xl);
  font-weight: 700;
  font-family: var(--font-display);
  margin-bottom: var(--space-3);
}

.section-subtitle {
  font-size: var(--font-size-md);
  color: var(--color-text-subtle);
}

.steps-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--space-6);
}

.step-card {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  transition: all var(--transition-base);
  position: relative;
}

.step-card:hover {
  background: rgba(255, 255, 255, 0.05);
  border-color: var(--color-primary);
  transform: translateY(-5px);
}

.step-number {
  position: absolute;
  top: -15px;
  right: var(--space-5);
  width: 40px;
  height: 40px;
  background: var(--gradient-primary);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-size-lg);
  font-weight: 700;
  color: white;
}

.step-icon {
  margin-bottom: var(--space-4);
  color: var(--color-primary);
}

.step-card h3 {
  font-size: var(--font-size-lg);
  font-weight: 600;
  margin-bottom: var(--space-3);
}

.step-card p {
  color: var(--color-text-subtle);
  line-height: 1.6;
}

/* About Section */
.about-section {
  padding: var(--space-10) 0;
  background: radial-gradient(ellipse at center, rgba(219, 1, 249, 0.05) 0%, transparent 70%);
}

.about-content {
  max-width: 800px;
  margin: 0 auto;
  text-align: center;
}

.about-content h2 {
  font-size: var(--font-size-3xl);
  font-weight: 700;
  margin-bottom: var(--space-5);
}

.about-content p {
  font-size: var(--font-size-md);
  color: var(--color-text-subtle);
  line-height: 1.7;
  margin-bottom: var(--space-4);
}

.about-actions {
  margin-top: var(--space-6);
}

/* Footer */
.main-footer {
  padding: var(--space-8) 0;
  border-top: 1px solid var(--color-border);
}

.footer-content {
  text-align: center;
}

.footer-logo {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-weight: 700;
  font-size: var(--font-size-lg);
  font-family: var(--font-display);
  margin-bottom: var(--space-3);
}

.footer-text {
  color: var(--color-text-subtle);
  margin-bottom: var(--space-4);
}

.footer-links {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-3);
  margin-bottom: var(--space-4);
  font-size: var(--font-size-sm);
}

.footer-copyright {
  font-size: var(--font-size-sm);
  color: var(--color-text-subtle);
}

/* Back to Top */
.back-to-top {
  position: fixed;
  bottom: var(--space-6);
  right: var(--space-6);
  width: 50px;
  height: 50px;
  background: var(--gradient-primary);
  border: none;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-base);
  z-index: 100;
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
}

.back-to-top:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-glow);
}

/* Loading Spinner */
.loading-spinner {
  display: inline-block;
  width: 20px;
  height: 20px;
  border: 3px solid rgba(255, 255, 255, 0.3);
  border-top-color: white;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

/* Responsive */
@media (max-width: 768px) {
  .nav-links {
    display: none;
  }
  
  .mobile-menu-toggle {
    display: flex;
  }
  
  .hero-title {
    font-size: var(--font-size-3xl);
  }
  
  .checker-card {
    padding: var(--space-5);
  }
  
  .steps-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 576px) {
  .hero-title {
    font-size: var(--font-size-2xl);
  }
  
  .checker-tabs {
    flex-direction: column;
  }
  
  .btn-large {
    padding: var(--space-3) var(--space-6);
    font-size: var(--font-size-base);
  }
}