/* Quantum AI Design System & Styling */
@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@300;400;500;600;700;800&family=Space+Grotesk:wght@500;700&display=swap');

:root {
  --bg-dark: #07040d;
  --bg-darker: #040208;
  --bg-card: rgba(22, 14, 43, 0.65);
  --bg-card-hover: rgba(36, 22, 69, 0.85);
  --bg-glass: rgba(255, 255, 255, 0.03);
  --border-color: rgba(157, 78, 221, 0.25);
  --border-glow: rgba(0, 240, 255, 0.5);
  
  --primary-purple: #9d4edd;
  --primary-glow: #7b2cbf;
  --deep-purple: #3c096c;
  --accent-cyan: #00f0ff;
  --accent-blue: #3a86ff;
  
  --text-white: #ffffff;
  --text-body: #d4d0e6;
  --text-muted: #9f99c0;
  
  --font-main: 'Plus Jakarta Sans', sans-serif;
  --font-heading: 'Space Grotesk', sans-serif;
  
  --transition-fast: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-smooth: 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  --shadow-purple: 0 10px 30px -10px rgba(157, 78, 221, 0.3);
  --shadow-cyan: 0 10px 30px -10px rgba(0, 240, 255, 0.35);
  --radius-lg: 20px;
  --radius-md: 12px;
  --radius-sm: 8px;
}

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

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

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

/* Background Canvas */
#quantum-canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -2;
  pointer-events: none;
}

/* Ambient Glow Gradients */
.glow-orb {
  position: fixed;
  border-radius: 50%;
  filter: blur(120px);
  z-index: -1;
  pointer-events: none;
  opacity: 0.4;
  animation: pulseOrb 10s infinite alternate ease-in-out;
}

.glow-orb-1 {
  top: -10%;
  left: -10%;
  width: 50vw;
  height: 50vw;
  background: radial-gradient(circle, var(--deep-purple) 0%, rgba(157,78,221,0.2) 70%, transparent 100%);
}

.glow-orb-2 {
  bottom: 10%;
  right: -10%;
  width: 45vw;
  height: 45vw;
  background: radial-gradient(circle, rgba(0,240,255,0.25) 0%, rgba(58,134,255,0.15) 70%, transparent 100%);
  animation-delay: -5s;
}

@keyframes pulseOrb {
  0% { transform: scale(1) translate(0, 0); opacity: 0.35; }
  100% { transform: scale(1.15) translate(30px, -20px); opacity: 0.55; }
}

/* Container */
.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 2rem;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  color: var(--text-white);
  line-height: 1.2;
}

.gradient-text {
  background: linear-gradient(135deg, #ffffff 20%, var(--accent-cyan) 60%, var(--primary-purple) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: inline-block;
}

.gradient-text-purple {
  background: linear-gradient(135deg, var(--text-white) 0%, var(--primary-purple) 70%, var(--accent-cyan) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: inline-block;
}

/* Header & Navbar */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  padding: 1.25rem 0;
  transition: var(--transition-smooth);
}

.navbar.scrolled {
  padding: 0.85rem 0;
  background: rgba(7, 4, 13, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-color);
  box-shadow: 0 10px 30px rgba(0,0,0,0.5);
}

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

.logo-brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
}

.logo-img {
  height: 48px;
  width: auto;
  object-fit: contain;
  filter: drop-shadow(0 0 10px rgba(0, 240, 255, 0.4));
  transition: transform 0.3s ease;
}

.logo-brand:hover .logo-img {
  transform: scale(1.05) rotate(3deg);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 2.2rem;
  list-style: none;
}

.nav-link {
  color: var(--text-muted);
  text-decoration: none;
  font-weight: 500;
  font-size: 0.98rem;
  position: relative;
  padding: 0.5rem 0;
  transition: color var(--transition-fast);
}

.nav-link:hover, .nav-link.active {
  color: var(--text-white);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0%;
  height: 2px;
  background: linear-gradient(90deg, var(--primary-purple), var(--accent-cyan));
  border-radius: 2px;
  transition: width var(--transition-fast);
}

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

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

.mobile-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text-white);
  font-size: 1.6rem;
  cursor: pointer;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  padding: 0.85rem 1.8rem;
  border-radius: 50px;
  font-weight: 600;
  font-size: 0.95rem;
  font-family: var(--font-main);
  text-decoration: none;
  cursor: pointer;
  transition: var(--transition-smooth);
  border: none;
  position: relative;
  overflow: hidden;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary-purple) 0%, var(--deep-purple) 100%);
  color: var(--text-white);
  border: 1px solid rgba(255, 255, 255, 0.2);
  box-shadow: 0 4px 20px rgba(157, 78, 221, 0.4);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(157, 78, 221, 0.6), 0 0 15px rgba(0, 240, 255, 0.4);
  border-color: var(--accent-cyan);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-white);
  border: 1px solid var(--border-color);
  backdrop-filter: blur(10px);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: var(--accent-cyan);
  color: var(--accent-cyan);
  transform: translateY(-2px);
}

.btn-cyan {
  background: linear-gradient(135deg, var(--accent-cyan) 0%, var(--accent-blue) 100%);
  color: #040208;
  font-weight: 700;
  box-shadow: var(--shadow-cyan);
}

.btn-cyan:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 30px rgba(0, 240, 255, 0.6);
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.4rem 1.1rem;
  border-radius: 50px;
  background: rgba(157, 78, 221, 0.15);
  border: 1px solid rgba(157, 78, 221, 0.35);
  color: var(--accent-cyan);
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.badge-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--accent-cyan);
  box-shadow: 0 0 10px var(--accent-cyan);
  animation: pulseDot 2s infinite;
}

@keyframes pulseDot {
  0%, 100% { transform: scale(1); opacity: 1; }
  50% { transform: scale(1.4); opacity: 0.6; }
}

/* Glass Card Component */
.glass-card {
  background: var(--bg-card);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 2rem;
  transition: var(--transition-smooth);
  position: relative;
  overflow: hidden;
}

.glass-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
}

.glass-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-glow);
  transform: translateY(-5px);
  box-shadow: 0 15px 35px rgba(0, 0, 0, 0.4), 0 0 20px rgba(157, 78, 221, 0.2);
}

/* Section Common Styling */
.section {
  padding: 6rem 0;
  position: relative;
}

.section-title-wrapper {
  text-align: center;
  max-width: 750px;
  margin: 0 auto 4rem auto;
}

.section-title-wrapper h2 {
  font-size: 2.75rem;
  margin: 1rem 0;
  font-weight: 800;
}

.section-title-wrapper p {
  color: var(--text-muted);
  font-size: 1.1rem;
}

/* Stats Counter Grid */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.5rem;
  margin-top: 3rem;
}

.stat-card {
  text-align: center;
  padding: 2rem 1.5rem;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--border-color);
}

.stat-number {
  font-size: 2.8rem;
  font-weight: 800;
  font-family: var(--font-heading);
  color: var(--accent-cyan);
  margin-bottom: 0.25rem;
  text-shadow: 0 0 20px rgba(0, 240, 255, 0.3);
}

.stat-label {
  color: var(--text-muted);
  font-size: 0.95rem;
  font-weight: 500;
}

/* Hero Section */
.hero {
  padding: 10rem 0 6rem 0;
  min-height: 90vh;
  display: flex;
  align-items: center;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 4rem;
  align-items: center;
}

.hero-content h1 {
  font-size: 3.8rem;
  margin: 1.2rem 0;
  font-weight: 800;
  letter-spacing: -1px;
}

.hero-content p {
  font-size: 1.25rem;
  color: var(--text-muted);
  margin-bottom: 2.5rem;
  max-width: 600px;
}

.hero-btns {
  display: flex;
  gap: 1.2rem;
  flex-wrap: wrap;
}

.hero-visual {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
}

.hero-atom-wrapper {
  position: relative;
  width: 100%;
  max-width: 420px;
  aspect-ratio: 1;
  display: flex;
  align-items: center;
  justify-content: center;
}

.hero-atom-img {
  width: 100%;
  height: auto;
  object-fit: contain;
  filter: drop-shadow(0 0 35px rgba(0, 240, 255, 0.5)) drop-shadow(0 0 50px rgba(157, 78, 221, 0.4));
  animation: floatHero 6s ease-in-out infinite alternate;
}

@keyframes floatHero {
  0% { transform: translateY(0) rotate(0deg); }
  100% { transform: translateY(-18px) rotate(4deg); }
}

.hero-card-float {
  position: absolute;
  padding: 1rem 1.5rem;
  border-radius: var(--radius-md);
  background: rgba(14, 8, 30, 0.85);
  border: 1px solid var(--accent-cyan);
  backdrop-filter: blur(12px);
  box-shadow: 0 10px 25px rgba(0,0,0,0.5);
  display: flex;
  align-items: center;
  gap: 1rem;
}

.float-1 {
  bottom: 5%;
  left: -5%;
}

.float-2 {
  top: 10%;
  right: -5%;
}

.float-icon {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: rgba(0, 240, 255, 0.15);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-cyan);
  font-size: 1.2rem;
}

/* Feature / Module Card Grid */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 2rem;
}

.module-card {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.module-icon {
  width: 60px;
  height: 60px;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, rgba(157, 78, 221, 0.2), rgba(0, 240, 255, 0.1));
  border: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
  color: var(--accent-cyan);
  margin-bottom: 1.5rem;
}

.module-card h3 {
  font-size: 1.4rem;
  margin-bottom: 0.75rem;
}

.module-card p {
  color: var(--text-muted);
  font-size: 0.98rem;
  margin-bottom: 1.5rem;
}

.module-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 1.2rem;
  border-top: 1px solid rgba(255,255,255,0.08);
  font-size: 0.88rem;
  color: var(--text-muted);
}

.module-meta span {
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

/* Tabs UI for Training Page */
.tabs-container {
  display: flex;
  justify-content: center;
  gap: 1rem;
  margin-bottom: 3rem;
  flex-wrap: wrap;
}

.tab-btn {
  padding: 0.75rem 1.6rem;
  border-radius: 50px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-color);
  color: var(--text-muted);
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  transition: var(--transition-fast);
}

.tab-btn:hover, .tab-btn.active {
  background: linear-gradient(135deg, var(--primary-purple), var(--deep-purple));
  color: var(--text-white);
  border-color: var(--accent-cyan);
  box-shadow: 0 5px 20px rgba(157, 78, 221, 0.4);
}

/* Interactive AI Interview Simulator Widget */
.sim-container {
  background: var(--bg-card);
  border: 1px solid var(--border-glow);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  box-shadow: var(--shadow-purple);
  margin-top: 3rem;
}

.sim-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 2rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid rgba(255,255,255,0.1);
}

.sim-body {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
}

.sim-question-box {
  background: rgba(10, 6, 20, 0.8);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1.5rem;
}

.question-tag {
  color: var(--accent-cyan);
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  margin-bottom: 0.5rem;
  display: block;
}

.sim-answer-input {
  width: 100%;
  height: 140px;
  background: rgba(10, 6, 20, 0.9);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1rem;
  color: var(--text-white);
  font-family: var(--font-main);
  font-size: 0.95rem;
  resize: none;
  outline: none;
  transition: border-color 0.3s;
}

.sim-answer-input:focus {
  border-color: var(--accent-cyan);
  box-shadow: 0 0 15px rgba(0, 240, 255, 0.2);
}

.sim-feedback {
  background: rgba(0, 240, 255, 0.05);
  border: 1px dashed var(--accent-cyan);
  border-radius: var(--radius-md);
  padding: 1.25rem;
  margin-top: 1rem;
  display: none;
}

.sim-feedback.active {
  display: block;
  animation: fadeIn 0.4s ease;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Roadmap / Timeline */
.timeline {
  position: relative;
  max-width: 900px;
  margin: 3rem auto 0 auto;
}

.timeline::before {
  content: '';
  position: absolute;
  top: 0;
  bottom: 0;
  left: 50%;
  width: 2px;
  background: linear-gradient(180deg, var(--accent-cyan), var(--primary-purple), transparent);
  transform: translateX(-50%);
}

.timeline-item {
  position: relative;
  margin-bottom: 3rem;
  width: 50%;
}

.timeline-item:nth-child(odd) {
  left: 0;
  padding-right: 3rem;
  text-align: right;
}

.timeline-item:nth-child(even) {
  left: 50%;
  padding-left: 3rem;
  text-align: left;
}

.timeline-dot {
  position: absolute;
  top: 0;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--accent-cyan);
  box-shadow: 0 0 15px var(--accent-cyan);
}

.timeline-item:nth-child(odd) .timeline-dot { right: -10px; }
.timeline-item:nth-child(even) .timeline-dot { left: -10px; }

/* Contact Form Styling */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 3rem;
  align-items: start;
}

.contact-info-list {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  margin-top: 2rem;
}

.contact-info-item {
  display: flex;
  align-items: center;
  gap: 1.2rem;
}

.info-icon {
  width: 50px;
  height: 50px;
  border-radius: 50%;
  background: rgba(157, 78, 221, 0.15);
  border: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-cyan);
  font-size: 1.3rem;
}

.form-group {
  margin-bottom: 1.5rem;
}

.form-group label {
  display: block;
  margin-bottom: 0.5rem;
  color: var(--text-white);
  font-weight: 500;
  font-size: 0.95rem;
}

.form-control {
  width: 100%;
  padding: 0.95rem 1.2rem;
  border-radius: var(--radius-md);
  background: rgba(10, 6, 20, 0.8);
  border: 1px solid var(--border-color);
  color: var(--text-white);
  font-family: var(--font-main);
  font-size: 1rem;
  outline: none;
  transition: var(--transition-fast);
}

.form-control:focus {
  border-color: var(--accent-cyan);
  box-shadow: 0 0 15px rgba(0, 240, 255, 0.25);
}

/* FAQ Accordion */
.faq-accordion {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  max-width: 900px;
  margin: 0 auto;
}

.faq-item {
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  background: var(--bg-card);
  overflow: hidden;
  transition: var(--transition-fast);
}

.faq-header {
  padding: 1.25rem 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
  font-weight: 600;
  font-size: 1.1rem;
  color: var(--text-white);
}

.faq-header i {
  transition: transform 0.3s ease;
  color: var(--accent-cyan);
}

.faq-item.active .faq-header i {
  transform: rotate(180deg);
}

.faq-body {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s cubic-bezier(0, 1, 0, 1);
  padding: 0 1.5rem;
  color: var(--text-muted);
  font-size: 0.98rem;
}

.faq-item.active .faq-body {
  max-height: 300px;
  padding: 0 1.5rem 1.5rem 1.5rem;
}

/* Modal Popup */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.8);
  backdrop-filter: blur(10px);
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}

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

.modal-box {
  background: var(--bg-dark);
  border: 1px solid var(--border-glow);
  border-radius: var(--radius-lg);
  padding: 3rem;
  max-width: 480px;
  width: 90%;
  text-align: center;
  box-shadow: 0 20px 50px rgba(0, 240, 255, 0.3);
  transform: scale(0.85);
  transition: transform 0.3s ease;
}

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

/* Footer */
.footer {
  background: var(--bg-darker);
  border-top: 1px solid var(--border-color);
  padding: 5rem 0 2rem 0;
  margin-top: 6rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 3rem;
  margin-bottom: 4rem;
}

.footer-brand p {
  color: var(--text-muted);
  margin-top: 1rem;
  font-size: 0.95rem;
  max-width: 320px;
}

.footer-column h4 {
  font-size: 1.1rem;
  margin-bottom: 1.5rem;
  color: var(--text-white);
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.8rem;
}

.footer-links a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.92rem;
  transition: color var(--transition-fast);
}

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

.footer-bottom {
  text-align: center;
  padding-top: 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  color: var(--text-muted);
  font-size: 0.88rem;
}

/* Responsive Styles */
@media (max-width: 992px) {
  .hero-grid, .sim-body, .contact-grid {
    grid-template-columns: 1fr;
  }
  .hero-content h1 {
    font-size: 2.8rem;
  }
  .timeline::before {
    left: 20px;
  }
  .timeline-item {
    width: 100%;
    padding-left: 3.5rem !important;
    text-align: left !important;
  }
  .timeline-item:nth-child(odd) .timeline-dot,
  .timeline-item:nth-child(even) .timeline-dot {
    left: 10px;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 768px) {
  .nav-links {
    position: fixed;
    top: 0;
    right: -100%;
    width: 80%;
    height: 100vh;
    background: rgba(10, 6, 20, 0.98);
    backdrop-filter: blur(25px);
    flex-direction: column;
    justify-content: center;
    transition: right 0.4s ease;
    padding: 2rem;
  }
  .nav-links.active {
    right: 0;
  }
  .mobile-toggle {
    display: block;
  }
  .footer-grid {
    grid-template-columns: 1fr;
  }
}