/* ============================================
   InternBit — Design System & Styles
   ============================================ */

/* ---------- CSS Custom Properties ---------- */
:root {
  /* Colors */
  --bg-primary: #0a0a1a;
  --bg-secondary: #111128;
  --bg-card: rgba(255, 255, 255, 0.04);
  --bg-card-hover: rgba(255, 255, 255, 0.08);
  --border-glass: rgba(255, 255, 255, 0.08);
  --border-glass-hover: rgba(255, 255, 255, 0.15);

  --text-primary: #f0f0f5;
  --text-secondary: #a0a0c0;
  --text-muted: #6a6a8a;

  --accent-1: #4361ee;
  --accent-2: #7b2ff7;
  --accent-3: #00d4aa;
  --accent-gradient: linear-gradient(135deg, #4361ee 0%, #7b2ff7 50%, #00d4aa 100%);
  --accent-gradient-hover: linear-gradient(135deg, #5a78ff 0%, #9148ff 50%, #00f0c0 100%);

  --danger: #ff4757;
  --success: #2ed573;
  --warning: #ffa502;

  /* Typography */
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-heading: 'Outfit', 'Inter', sans-serif;

  /* Spacing */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;

  /* Radius */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;

  /* Shadows */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 40px rgba(67, 97, 238, 0.15);
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

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

/* Animated background */
body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background:
    radial-gradient(ellipse at 20% 20%, rgba(67, 97, 238, 0.08) 0%, transparent 60%),
    radial-gradient(ellipse at 80% 80%, rgba(123, 47, 247, 0.06) 0%, transparent 60%),
    radial-gradient(ellipse at 50% 50%, rgba(0, 212, 170, 0.04) 0%, transparent 60%);
  z-index: -1;
  animation: bgShift 15s ease-in-out infinite alternate;
}

@keyframes bgShift {
  0% {
    opacity: 0.7;
    transform: scale(1);
  }

  100% {
    opacity: 1;
    transform: scale(1.05);
  }
}

/* ---------- Typography ---------- */
h1,
h2,
h3,
h4 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.2;
}

a {
  color: var(--accent-1);
  text-decoration: none;
  transition: color 0.3s;
}

a:hover {
  color: var(--accent-3);
}

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

.section-title {
  font-size: 2.2rem;
  text-align: center;
  margin-bottom: var(--space-3xl);
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  border: none;
  border-radius: var(--radius-xl);
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  overflow: hidden;
}

.btn-primary {
  background: var(--accent-gradient);
  color: #fff;
  box-shadow: 0 4px 20px rgba(67, 97, 238, 0.35);
}

.btn-primary:hover {
  background: var(--accent-gradient-hover);
  box-shadow: 0 6px 30px rgba(67, 97, 238, 0.5);
  transform: translateY(-2px);
}

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

.btn-outline:hover {
  border-color: var(--accent-1);
  color: var(--accent-1);
  transform: translateY(-2px);
}

/* ---------- Navbar ---------- */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  padding: var(--space-md) 0;
  background: rgba(10, 10, 26, 0.85);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-glass);
  transition: all 0.3s;
}

.navbar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-brand {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 800;
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav-brand .intern {
  color: var(--text-primary);
}

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

.nav-links {
  display: flex;
  list-style: none;
  gap: var(--space-xl);
}

.nav-links a {
  color: var(--text-secondary);
  font-weight: 500;
  font-size: 0.95rem;
  position: relative;
  padding: 4px 0;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--accent-gradient);
  transition: width 0.3s;
}

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

.nav-links a:hover::after {
  width: 100%;
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text-primary);
  font-size: 1.5rem;
  cursor: pointer;
}

/* ---------- Hero Section ---------- */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 120px var(--space-xl) 80px;
  position: relative;
}

.hero-content {
  max-width: 800px;
  animation: fadeInUp 1s ease;
}

.hero-logo {
  max-width: 280px;
  margin-bottom: 20px;
  border-radius: var(--radius-md);
  filter: drop-shadow(0 4px 20px rgba(67, 97, 238, 0.2));
}

.hero-badge {
  display: inline-block;
  padding: 8px 20px;
  border-radius: 50px;
  background: rgba(67, 97, 238, 0.1);
  border: 1px solid rgba(67, 97, 238, 0.3);
  color: var(--accent-1);
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: var(--space-lg);
  letter-spacing: 1px;
  text-transform: uppercase;
}

.hero h1 {
  font-size: 3.8rem;
  margin-bottom: var(--space-lg);
  line-height: 1.1;
}

.hero h1 .highlight {
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero p {
  font-size: 1.2rem;
  color: var(--text-secondary);
  margin-bottom: var(--space-2xl);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.hero-buttons {
  display: flex;
  gap: var(--space-md);
  justify-content: center;
  flex-wrap: wrap;
}

.hero-stats {
  display: flex;
  gap: var(--space-3xl);
  justify-content: center;
  margin-top: var(--space-3xl);
}

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

.stat-number {
  font-family: var(--font-heading);
  font-size: 2.5rem;
  font-weight: 800;
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.stat-label {
  font-size: 0.85rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-top: 4px;
}

/* Floating particles */
.hero::before,
.hero::after {
  content: '';
  position: absolute;
  border-radius: 50%;
  animation: float 6s ease-in-out infinite;
}

.hero::before {
  width: 300px;
  height: 300px;
  background: radial-gradient(circle, rgba(67, 97, 238, 0.1) 0%, transparent 70%);
  top: 10%;
  left: 5%;
}

.hero::after {
  width: 200px;
  height: 200px;
  background: radial-gradient(circle, rgba(0, 212, 170, 0.08) 0%, transparent 70%);
  bottom: 15%;
  right: 10%;
  animation-delay: -3s;
}

@keyframes float {

  0%,
  100% {
    transform: translateY(0) rotate(0deg);
  }

  50% {
    transform: translateY(-30px) rotate(5deg);
  }
}

/* ---------- Domains Section ---------- */
.domains {
  padding: 100px 0;
}

.domain-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: var(--space-xl);
}

.domain-card {
  background: var(--bg-card);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  padding: var(--space-2xl);
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  overflow: hidden;
}

.domain-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--accent-gradient);
  opacity: 0;
  transition: opacity 0.3s;
}

.domain-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-glass-hover);
  transform: translateY(-8px);
  box-shadow: var(--shadow-glow);
}

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

.domain-icon {
  font-size: 2.5rem;
  margin-bottom: var(--space-md);
  display: block;
}

.domain-card h3 {
  font-size: 1.3rem;
  margin-bottom: var(--space-sm);
}

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

.domain-tag {
  display: inline-block;
  margin-top: var(--space-md);
  padding: 4px 12px;
  border-radius: 50px;
  background: rgba(67, 97, 238, 0.1);
  color: var(--accent-1);
  font-size: 0.8rem;
  font-weight: 600;
}

/* ---------- Registration Section ---------- */
.register {
  padding: 100px 0;
}

.form-wrapper {
  max-width: 700px;
  margin: 0 auto;
  background: var(--bg-card);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  padding: var(--space-3xl);
  backdrop-filter: blur(10px);
  box-shadow: var(--shadow-lg);
}

.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-lg);
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-group.full-width {
  grid-column: 1 / -1;
}

.form-group label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.form-group input,
.form-group select {
  padding: 14px 16px;
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.03);
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 1rem;
  transition: all 0.3s;
  outline: none;
}

.form-group input:focus,
.form-group select:focus {
  border-color: var(--accent-1);
  box-shadow: 0 0 0 3px rgba(67, 97, 238, 0.15);
  background: rgba(255, 255, 255, 0.05);
}

.form-group input::placeholder {
  color: var(--text-muted);
}

.form-group select option {
  background: var(--bg-secondary);
  color: var(--text-primary);
}

.form-actions {
  grid-column: 1 / -1;
  display: flex;
  justify-content: center;
  margin-top: var(--space-md);
}

/* ---------- Confirmation Section ---------- */
.confirmation {
  padding: 100px 0;
  display: none;
}

.confirmation.active {
  display: block;
  animation: fadeInUp 0.7s ease;
}

.confirmation-card {
  max-width: 620px;
  margin: 0 auto;
  text-align: center;
  background: var(--bg-card);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-xl);
  padding: var(--space-3xl) var(--space-2xl);
  backdrop-filter: blur(16px);
  box-shadow: var(--shadow-lg), var(--shadow-glow);
  position: relative;
  overflow: hidden;
}

/* Top gradient accent bar */
.confirmation-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--accent-gradient);
}

.confirmation-icon {
  margin-bottom: var(--space-lg);
}

.confirmation-icon svg {
  filter: drop-shadow(0 0 20px rgba(67, 97, 238, 0.3));
}

/* Animated checkmark stroke */
.check-path {
  stroke-dasharray: 60;
  stroke-dashoffset: 60;
  animation: drawCheck 0.8s ease 0.3s forwards;
}

@keyframes drawCheck {
  to {
    stroke-dashoffset: 0;
  }
}

.confirmation-title {
  font-size: 2rem;
  margin-bottom: var(--space-sm);
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.confirmation-name {
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--space-lg);
}

.confirmation-message {
  color: var(--text-secondary);
  font-size: 1rem;
  line-height: 1.8;
  margin-bottom: var(--space-xl);
  max-width: 500px;
  margin-left: auto;
  margin-right: auto;
}

.confirmation-message strong {
  color: var(--accent-3);
}

/* Confirmation details mini-cards */
.confirmation-details {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-sm);
  margin-bottom: var(--space-xl);
}

.conf-detail-item {
  padding: var(--space-md);
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: var(--radius-sm);
  text-align: left;
}

.conf-detail-label {
  display: block;
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--text-muted);
  margin-bottom: 4px;
}

.conf-detail-value {
  display: block;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-primary);
}

/* Contact section */
.confirmation-contact {
  background: rgba(67, 97, 238, 0.06);
  border: 1px solid rgba(67, 97, 238, 0.15);
  border-radius: var(--radius-md);
  padding: var(--space-lg) var(--space-xl);
  margin-bottom: var(--space-xl);
}

.contact-label {
  display: block;
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-bottom: 6px;
}

.contact-email {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--accent-3) !important;
  letter-spacing: 0.5px;
  transition: all 0.3s;
}

.contact-email:hover {
  color: var(--accent-1) !important;
  text-shadow: 0 0 20px rgba(0, 212, 170, 0.3);
}

.confirmation-reset {
  margin-top: var(--space-sm);
}

/* ---------- About Section ---------- */
.about {
  padding: 100px 0;
}

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

.about-content p {
  color: var(--text-secondary);
  font-size: 1.1rem;
  margin-bottom: var(--space-lg);
  line-height: 1.8;
}

/* ---------- Contact Section ---------- */
.contact {
  padding: 100px 0;
}

.contact-wrapper {
  display: flex;
  justify-content: center;
}

.contact-card {
  max-width: 500px;
  width: 100%;
  text-align: center;
  background: var(--bg-card);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-xl);
  padding: var(--space-3xl) var(--space-2xl);
  backdrop-filter: blur(16px);
  box-shadow: var(--shadow-lg), var(--shadow-glow);
  position: relative;
  overflow: hidden;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.contact-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--accent-gradient);
}

.contact-card:hover {
  transform: translateY(-6px);
  border-color: var(--border-glass-hover);
  box-shadow: var(--shadow-lg), 0 0 60px rgba(67, 97, 238, 0.2);
}

.contact-icon-wrap {
  margin-bottom: var(--space-lg);
}

.contact-icon-lg {
  font-size: 3rem;
  display: inline-block;
  animation: float 4s ease-in-out infinite;
}

.contact-card h3 {
  font-size: 1.5rem;
  margin-bottom: var(--space-md);
  color: var(--text-primary);
}

.contact-card p {
  color: var(--text-secondary);
  font-size: 1rem;
  line-height: 1.7;
  margin-bottom: var(--space-xl);
  max-width: 400px;
  margin-left: auto;
  margin-right: auto;
}

.contact-email-link {
  display: inline-block;
  padding: 14px 32px;
  border-radius: var(--radius-xl);
  background: rgba(67, 97, 238, 0.08);
  border: 1px solid rgba(67, 97, 238, 0.2);
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--accent-3) !important;
  letter-spacing: 0.5px;
  transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

.contact-email-link:hover {
  background: rgba(67, 97, 238, 0.15);
  border-color: var(--accent-1);
  color: var(--accent-1) !important;
  box-shadow: 0 0 30px rgba(67, 97, 238, 0.2);
  transform: translateY(-2px);
}

/* ---------- Footer ---------- */
.footer {
  padding: var(--space-2xl) 0;
  border-top: 1px solid var(--border-glass);
  text-align: center;
}

.footer p {
  color: var(--text-muted);
  font-size: 0.9rem;
}

.footer a {
  color: var(--accent-3);
}

/* ---------- Toast ---------- */
.toast {
  position: fixed;
  bottom: 30px;
  right: 30px;
  padding: 16px 28px;
  border-radius: var(--radius-md);
  background: rgba(46, 213, 115, 0.15);
  border: 1px solid rgba(46, 213, 115, 0.3);
  color: var(--success);
  font-weight: 600;
  transform: translateY(100px);
  opacity: 0;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  z-index: 9999;
  backdrop-filter: blur(10px);
}

.toast.show {
  transform: translateY(0);
  opacity: 1;
}

/* ---------- Animations ---------- */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }

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

.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ---------- Responsive ---------- */
@media (max-width: 768px) {
  .hero h1 {
    font-size: 2.4rem;
  }

  .hero-stats {
    gap: var(--space-xl);
  }

  .stat-number {
    font-size: 1.8rem;
  }

  .nav-links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    background: rgba(10, 10, 26, 0.95);
    backdrop-filter: blur(20px);
    flex-direction: column;
    padding: var(--space-xl);
    gap: var(--space-md);
    border-bottom: 1px solid var(--border-glass);
  }

  .nav-links.open {
    display: flex;
  }

  .nav-toggle {
    display: block;
  }

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

  .confirmation-details {
    grid-template-columns: 1fr;
  }

  .domain-grid {
    grid-template-columns: 1fr;
  }

  .section-title {
    font-size: 1.7rem;
  }

  .form-wrapper {
    padding: var(--space-xl);
  }

  .confirmation-card {
    padding: var(--space-2xl) var(--space-lg);
  }

  .confirmation-title {
    font-size: 1.6rem;
  }

  .hero-buttons {
    flex-direction: column;
    align-items: center;
  }
}

@media (max-width: 480px) {
  .hero h1 {
    font-size: 1.8rem;
  }

  .hero p {
    font-size: 1rem;
  }

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

/* ---------- Scrollbar ---------- */
::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: var(--bg-primary);
}

::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.1);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: rgba(255, 255, 255, 0.2);
}

/* ---------- Loading Spinner ---------- */
.loading-spinner {
  display: inline-block;
  width: 20px;
  height: 20px;
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
}

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