/* ============================================
   Gbill — Design System & Global Styles
   ============================================ */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&display=swap');

/* --- Custom Properties --- */
:root {
  /* Colors */
  --color-bg: #0a0e1a;
  --color-bg-secondary: #111827;
  --color-bg-card: rgba(17, 24, 39, 0.7);
  --color-bg-glass: rgba(255, 255, 255, 0.04);
  --color-surface: #1e293b;
  --color-border: rgba(255, 255, 255, 0.08);
  --color-border-light: rgba(255, 255, 255, 0.12);

  --color-text-primary: #f1f5f9;
  --color-text-secondary: #94a3b8;
  --color-text-muted: #64748b;

  --color-accent: #6366f1;
  --color-accent-light: #818cf8;
  --color-accent-dark: #4f46e5;
  --color-accent-glow: rgba(99, 102, 241, 0.25);

  --gradient-primary: linear-gradient(135deg, #6366f1, #8b5cf6, #a855f7);
  --gradient-hero: linear-gradient(160deg, #0a0e1a 0%, #1a1040 40%, #0a0e1a 100%);
  --gradient-card: linear-gradient(135deg, rgba(99, 102, 241, 0.08), rgba(139, 92, 246, 0.04));
  --gradient-text: linear-gradient(135deg, #c7d2fe, #e9d5ff);

  /* Typography */
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 1.875rem;
  --font-size-4xl: 2.25rem;
  --font-size-5xl: 3rem;
  --font-size-6xl: 3.75rem;

  /* Spacing */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;

  /* Borders & Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-2xl: 1.5rem;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.4);
  --shadow-xl: 0 20px 50px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 40px var(--color-accent-glow);

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 400ms ease;
}

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

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

body {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  line-height: 1.7;
  color: var(--color-text-primary);
  background: var(--color-bg);
  min-height: 100vh;
  overflow-x: hidden;
}

a {
  color: var(--color-accent-light);
  text-decoration: none;
  transition: color var(--transition-fast);
}

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

img {
  max-width: 100%;
  display: block;
}

ul,
ol {
  list-style: none;
}

/* --- Utility --- */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-6);
}

.section {
  padding: var(--space-24) 0;
}

.section-label {
  display: inline-block;
  font-size: var(--font-size-xs);
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-accent-light);
  background: rgba(99, 102, 241, 0.12);
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-full);
  margin-bottom: var(--space-4);
}

.section-title {
  font-size: var(--font-size-4xl);
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: var(--space-4);
  color: var(--color-text-primary);
}

.section-subtitle {
  font-size: var(--font-size-lg);
  color: var(--color-text-secondary);
  max-width: 600px;
  margin-bottom: var(--space-12);
}

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

.text-center .section-subtitle {
  margin-left: auto;
  margin-right: auto;
}

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

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

.btn-primary {
  background: var(--gradient-primary);
  color: #fff;
  box-shadow: var(--shadow-md), 0 0 20px var(--color-accent-glow);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg), 0 0 40px var(--color-accent-glow);
  color: #fff;
}

.btn-outline {
  background: transparent;
  color: var(--color-text-primary);
  border: 1px solid var(--color-border-light);
}

.btn-outline:hover {
  background: var(--color-bg-glass);
  border-color: var(--color-accent);
  color: var(--color-text-primary);
}

.btn-lg {
  padding: var(--space-4) var(--space-8);
  font-size: var(--font-size-base);
  border-radius: var(--radius-xl);
}

.btn-danger {
  background: linear-gradient(135deg, #ef4444, #dc2626);
  color: #fff;
  box-shadow: var(--shadow-md), 0 0 20px rgba(239, 68, 68, 0.25);
}

.btn-danger:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg), 0 0 40px rgba(239, 68, 68, 0.25);
  color: #fff;
}

/* --- Glass Card --- */
.glass-card {
  background: var(--gradient-card);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  transition: all var(--transition-base);
}

.glass-card:hover {
  border-color: var(--color-border-light);
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

/* ============================================
   Header / Navigation
   ============================================ */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(10, 14, 26, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--color-border);
  transition: background var(--transition-base);
}

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

.logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  text-decoration: none;
}

.logo img {
  height: 248px;
  width: auto;
}

.logo-text {
  font-size: var(--font-size-xl);
  font-weight: 800;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: -0.02em;
}

.nav {
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

.nav a {
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
  font-weight: 500;
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  text-decoration: none;
}

.nav a:hover,
.nav a.active {
  color: var(--color-text-primary);
  background: var(--color-bg-glass);
}

/* Mobile menu button */
.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--space-2);
  z-index: 1001;
}

.menu-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-text-primary);
  border-radius: 2px;
  transition: all var(--transition-base);
}

.menu-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.menu-toggle.active span:nth-child(2) {
  opacity: 0;
}

.menu-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* ============================================
   Hero Section
   ============================================ */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  background: var(--gradient-hero);
  overflow: hidden;
  padding-top: 72px;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, var(--color-accent-glow) 0%, transparent 70%);
  border-radius: 50%;
  animation: float 8s ease-in-out infinite;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: -30%;
  left: -10%;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(168, 85, 247, 0.15) 0%, transparent 70%);
  border-radius: 50%;
  animation: float 10s ease-in-out infinite reverse;
}

.hero .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-12);
}

@keyframes float {

  0%,
  100% {
    transform: translate(0, 0);
  }

  50% {
    transform: translate(30px, -30px);
  }
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 560px;
  flex-shrink: 0;
}

.hero-image {
  position: relative;
  z-index: 1;
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  max-width: 480px;
}

.hero-image img {
  width: 100%;
  height: auto;
  border-radius: var(--radius-2xl);
  animation: fadeInUp 0.8s ease-out 0.4s both;
  filter: drop-shadow(0 20px 60px rgba(99, 102, 241, 0.3));
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--font-size-xs);
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-accent-light);
  background: rgba(99, 102, 241, 0.1);
  border: 1px solid rgba(99, 102, 241, 0.2);
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-full);
  margin-bottom: var(--space-6);
  animation: fadeInUp 0.6s ease-out;
}

.hero-badge .dot {
  width: 8px;
  height: 8px;
  background: #22c55e;
  border-radius: 50%;
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {

  0%,
  100% {
    opacity: 1;
  }

  50% {
    opacity: 0.4;
  }
}

.hero h1 {
  font-size: var(--font-size-6xl);
  font-weight: 900;
  line-height: 1.1;
  letter-spacing: -0.03em;
  margin-bottom: var(--space-6);
  animation: fadeInUp 0.6s ease-out 0.1s both;
}

.hero p {
  font-size: var(--font-size-xl);
  color: var(--color-text-secondary);
  line-height: 1.6;
  margin-bottom: var(--space-10);
  max-width: 540px;
  animation: fadeInUp 0.6s ease-out 0.2s both;
}

.hero-actions {
  display: flex;
  gap: var(--space-4);
  animation: fadeInUp 0.6s ease-out 0.3s both;
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(24px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ============================================
   Features Section
   ============================================ */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
}

.feature-card {
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--gradient-primary);
  opacity: 0;
  transition: opacity var(--transition-base);
}

.feature-card:hover::before {
  opacity: 1;
}

.feature-icon {
  width: 52px;
  height: 52px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(99, 102, 241, 0.1);
  border-radius: var(--radius-lg);
  margin-bottom: var(--space-5);
  font-size: 24px;
  transition: all var(--transition-base);
}

.feature-card:hover .feature-icon {
  background: rgba(99, 102, 241, 0.2);
  transform: scale(1.08);
}

.feature-card h3 {
  font-size: var(--font-size-lg);
  font-weight: 700;
  margin-bottom: var(--space-3);
  color: var(--color-text-primary);
}

.feature-card p {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  line-height: 1.7;
}

/* ============================================
   CTA Section
   ============================================ */
.cta-section {
  position: relative;
  overflow: hidden;
}

.cta-box {
  position: relative;
  background: var(--gradient-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-2xl);
  padding: var(--space-16) var(--space-8);
  text-align: center;
  overflow: hidden;
}

.cta-box::before {
  content: '';
  position: absolute;
  top: -100px;
  left: 50%;
  transform: translateX(-50%);
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, var(--color-accent-glow) 0%, transparent 60%);
  pointer-events: none;
}

.cta-box h2 {
  position: relative;
  font-size: var(--font-size-4xl);
  font-weight: 800;
  margin-bottom: var(--space-4);
}

.cta-box p {
  position: relative;
  font-size: var(--font-size-lg);
  color: var(--color-text-secondary);
  max-width: 500px;
  margin: 0 auto var(--space-8);
}

.cta-box .btn {
  position: relative;
}

/* ============================================
   Contact Section
   ============================================ */
.contact-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
}

.contact-card {
  text-align: center;
  padding: var(--space-10) var(--space-6);
}

.contact-card .contact-icon {
  width: 60px;
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(99, 102, 241, 0.1);
  border-radius: var(--radius-xl);
  margin: 0 auto var(--space-5);
  font-size: 26px;
  transition: all var(--transition-base);
}

.contact-card:hover .contact-icon {
  background: rgba(99, 102, 241, 0.2);
  transform: scale(1.1);
}

.contact-card h3 {
  font-size: var(--font-size-base);
  font-weight: 700;
  margin-bottom: var(--space-2);
  color: var(--color-text-primary);
}

.contact-card p {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

.contact-card a {
  color: var(--color-accent-light);
  word-break: break-word;
}

/* ============================================
   Footer
   ============================================ */
.footer {
  border-top: 1px solid var(--color-border);
  padding: var(--space-12) 0 var(--space-8);
}

.footer-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-6);
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-4);
}

.footer-links a {
  color: var(--color-text-muted);
  font-size: var(--font-size-sm);
  font-weight: 500;
  transition: color var(--transition-fast);
}

.footer-links a:hover {
  color: var(--color-text-primary);
}

.footer-copy {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
}

/* ============================================
   Legal Pages (Terms, Privacy, Account Deletion)
   ============================================ */
.legal-page {
  padding-top: 120px;
  padding-bottom: var(--space-24);
  min-height: 100vh;
}

.legal-content {
  max-width: 800px;
  margin: 0 auto;
}

.legal-content h1 {
  font-size: var(--font-size-4xl);
  font-weight: 800;
  margin-bottom: var(--space-3);
  line-height: 1.2;
}

.legal-content .last-updated {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  margin-bottom: var(--space-10);
}

.legal-content h2 {
  font-size: var(--font-size-xl);
  font-weight: 700;
  margin-top: var(--space-10);
  margin-bottom: var(--space-4);
  color: var(--color-text-primary);
  padding-bottom: var(--space-2);
  border-bottom: 1px solid var(--color-border);
}

.legal-content h3 {
  font-size: var(--font-size-lg);
  font-weight: 600;
  margin-top: var(--space-6);
  margin-bottom: var(--space-3);
  color: var(--color-text-primary);
}

.legal-content p {
  color: var(--color-text-secondary);
  margin-bottom: var(--space-4);
  line-height: 1.8;
}

.legal-content ul,
.legal-content ol {
  list-style: disc;
  padding-left: var(--space-6);
  margin-bottom: var(--space-4);
}

.legal-content ol {
  list-style: decimal;
}

.legal-content li {
  color: var(--color-text-secondary);
  margin-bottom: var(--space-2);
  line-height: 1.7;
}

.legal-content a {
  color: var(--color-accent-light);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.legal-content a:hover {
  color: var(--color-text-primary);
}

/* Account Deletion specific */
.deletion-warning {
  background: rgba(239, 68, 68, 0.08);
  border: 1px solid rgba(239, 68, 68, 0.2);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  margin: var(--space-8) 0;
}

.deletion-warning h3 {
  color: #fca5a5;
  margin-top: 0;
}

.deletion-warning p {
  color: #fca5a5;
}

.deletion-steps {
  counter-reset: step;
  list-style: none !important;
  padding-left: 0 !important;
}

.deletion-steps li {
  counter-increment: step;
  position: relative;
  padding-left: var(--space-12);
  margin-bottom: var(--space-6);
}

.deletion-steps li::before {
  content: counter(step);
  position: absolute;
  left: 0;
  top: 2px;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(99, 102, 241, 0.1);
  border: 1px solid rgba(99, 102, 241, 0.2);
  border-radius: 50%;
  font-size: var(--font-size-sm);
  font-weight: 700;
  color: var(--color-accent-light);
}

/* ============================================
   Responsive
   ============================================ */
@media (max-width: 968px) {

  .features-grid,
  .contact-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .hero .container {
    flex-direction: column;
    text-align: center;
  }

  .hero-content {
    max-width: 100%;
  }

  .hero p {
    max-width: 100%;
  }

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

  .hero-image {
    max-width: 360px;
  }

  .hero h1 {
    font-size: var(--font-size-5xl);
  }

  .section-title {
    font-size: var(--font-size-3xl);
  }
}

@media (max-width: 768px) {
  .menu-toggle {
    display: flex;
  }

  .nav {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(10, 14, 26, 0.97);
    backdrop-filter: blur(20px);
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--space-4);
    z-index: 1000;
  }

  .nav.open {
    display: flex;
  }

  .nav a {
    font-size: var(--font-size-xl);
    padding: var(--space-3) var(--space-6);
  }

  .hero h1 {
    font-size: var(--font-size-4xl);
  }

  .hero p {
    font-size: var(--font-size-base);
  }

  .hero-actions {
    flex-direction: column;
  }

  .features-grid,
  .contact-grid {
    grid-template-columns: 1fr;
  }

  .cta-box {
    padding: var(--space-10) var(--space-6);
  }

  .cta-box h2 {
    font-size: var(--font-size-3xl);
  }

  .section {
    padding: var(--space-16) 0;
  }

  .legal-page {
    padding-top: 100px;
  }

  .legal-content h1 {
    font-size: var(--font-size-3xl);
  }
}

@media (max-width: 480px) {
  .hero h1 {
    font-size: var(--font-size-3xl);
  }

  .section-title {
    font-size: var(--font-size-2xl);
  }

  .container {
    padding: 0 var(--space-4);
  }
}