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

:root {
  /* Soft Dark Mode Colors */
  --bg-deep: #0F172A;
  --bg-surface: #1E293B;
  --bg-surface-light: #334155;
  --text-main: #E2E8F0;
  --text-muted: #94A3B8;
  
  /* Accents (Cyan/Turquoise) */
  --accent-cyan: #06B6D4;
  --accent-blue: #38BDF8;
  
  /* Gradients */
  --gradient-primary: linear-gradient(135deg, var(--accent-cyan) 0%, var(--accent-blue) 100%);
  --gradient-surface: linear-gradient(180deg, rgba(30, 41, 59, 0.8) 0%, rgba(15, 23, 42, 0.8) 100%);
  
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --shadow-card: 0 10px 15px -3px rgba(0, 0, 0, 0.3), 0 4px 6px -2px rgba(0, 0, 0, 0.15);
  --shadow-hover: 0 20px 25px -5px rgba(6, 182, 212, 0.15), 0 10px 10px -5px rgba(6, 182, 212, 0.1);
}

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

body {
  font-family: 'Inter', sans-serif;
  background: linear-gradient(-45deg, var(--bg-deep), #162a45, #1d3557, var(--bg-deep));
  background-size: 400% 400%;
  animation: gradientWave 15s ease infinite;
  color: var(--text-main);
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
  scroll-behavior: smooth;
}

@keyframes gradientWave {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

/* Typography */
h1, h2, h3, h4 {
  font-weight: 700;
  color: #fff;
  margin-bottom: 1rem;
}

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

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

/* Layout */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
}

/* Navbar */
header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  background: rgba(15, 23, 42, 0.85);
  backdrop-filter: blur(12px);
  z-index: 1000;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.navbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 80px;
}

.logo-container {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.logo-img {
  height: 65px;
  width: auto;
  border-radius: 8px;
  box-shadow: 0 0 15px rgba(6, 182, 212, 0.3);
  transition: transform 0.3s ease;
}

.logo-img:hover {
  transform: scale(1.1);
}

.logo-text {
  font-size: 1.25rem;
  font-weight: 700;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.nav-links {
  display: flex;
  gap: 1rem;
  list-style: none;
  align-items: center;
  flex-wrap: nowrap;
  white-space: nowrap;
}

.nav-links li a {
  color: var(--text-muted);
  font-weight: 500;
  font-size: 0.9rem;
  cursor: pointer;
  white-space: nowrap;
}

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

/* Lang Switcher */
.lang-switcher {
  display: flex;
  background: var(--bg-surface);
  border-radius: 20px;
  padding: 0.25rem;
  border: 1px solid rgba(255,255,255,0.1);
}

.lang-btn {
  background: transparent;
  border: none;
  color: var(--text-muted);
  padding: 0.25rem 0.75rem;
  border-radius: 16px;
  cursor: pointer;
  font-weight: 600;
  font-size: 0.85rem;
  transition: var(--transition);
}

.lang-btn.active {
  background: var(--gradient-primary);
  color: #fff;
}

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

/* Main Content Area */
main.container {
  padding-top: 140px;
  min-height: calc(100vh - 160px);
}

.page-section {
  display: none;
  animation: fadeIn 0.5s ease;
}

.page-section.active {
  display: block;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Dynamic Banner Carousel */
.banner-carousel {
  width: 100%;
  height: 450px;
  position: relative;
  overflow: hidden;
  border-radius: 12px;
  margin-bottom: 3rem;
  box-shadow: 0 10px 30px rgba(0,0,0,0.5);
}

.banner-track {
  display: flex;
  width: 100%;
  height: 100%;
  transition: transform 0.5s ease-in-out;
}

.banner-slide {
  flex: 0 0 100%;
  width: 100%;
  height: 100%;
  background-size: cover;
  background-position: center;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
}

.banner-arrow {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  background: rgba(15, 23, 42, 0.6);
  color: white;
  border: 1px solid rgba(255,255,255,0.1);
  width: 40px;
  height: 40px;
  border-radius: 50%;
  cursor: pointer;
  z-index: 10;
  font-size: 1.2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: 0.3s;
}
.banner-arrow.prev { left: 1rem; }
.banner-arrow.next { right: 1rem; }
.banner-arrow:hover {
  background: var(--accent-cyan);
  color: #000;
}

.banner-content {
  position: relative;
  padding: 2rem;
}
.banner-content h2 {
  font-size: 2.5rem;
  text-shadow: 0 2px 10px rgba(0,0,0,0.8);
  margin-bottom: 1.5rem;
}

/* Hero Section */
.hero {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 3rem;
  text-align: left;
  padding: 4rem 0;
  background: radial-gradient(circle at center, rgba(6, 182, 212, 0.1) 0%, transparent 50%);
  flex-wrap: wrap;
}

.hero-text {
  flex: 1;
  min-width: 300px;
}

.profile-pic {
  width: 225px;
  height: 225px;
  border-radius: 50%;
  object-fit: cover;
  border: 3px solid var(--accent-cyan);
  box-shadow: 0 0 30px rgba(6, 182, 212, 0.3);
  flex-shrink: 0;
}

.hero h1 {
  font-size: 2.5rem;
  margin-bottom: 1rem;
}

.hero p {
  font-size: 1.1rem;
  color: var(--text-muted);
  max-width: 700px;
  margin: 0 0 2rem 0;
}

.btn {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  border-radius: 8px;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  border: none;
}

.btn-primary {
  background: var(--gradient-primary);
  color: #fff;
  box-shadow: 0 4px 15px rgba(6, 182, 212, 0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(6, 182, 212, 0.4);
}

/* Cards & Modals */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 2rem;
  margin-top: 2rem;
}

.card {
  background: var(--bg-surface);
  border-radius: 12px;
  padding: 1.5rem;
  box-shadow: var(--shadow-card);
  transition: var(--transition);
  border: 1px solid rgba(255, 255, 255, 0.05);
  position: relative;
  overflow: hidden;
}

.card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-hover);
  border-color: rgba(6, 182, 212, 0.3);
}

.card-title {
  font-size: 1.25rem;
  color: #fff;
  margin-bottom: 0.5rem;
}

.badge {
  background: rgba(6, 182, 212, 0.1);
  color: var(--accent-cyan);
  padding: 0.25rem 0.75rem;
  border-radius: 12px;
  font-size: 0.8rem;
  font-weight: 600;
  display: inline-block;
  margin-bottom: 1rem;
}

.industry-label {
  margin-top: 1rem;
  padding-top: 1rem;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  font-size: 0.9rem;
  color: var(--accent-blue);
}

/* Simulation Sliders */
.slider-container {
  margin: 1.5rem 0;
}
.slider-container label {
  display: flex;
  justify-content: space-between;
  margin-bottom: 0.5rem;
  font-size: 0.9rem;
}
input[type=range] {
  width: 100%;
  accent-color: var(--accent-cyan);
}
.sim-preview {
  height: 150px;
  background: var(--bg-deep);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px dashed rgba(6, 182, 212, 0.3);
  margin-bottom: 1rem;
  color: var(--text-muted);
}

/* Filters */
.filters {
  display: flex;
  gap: 1rem;
  margin-bottom: 2rem;
  flex-wrap: wrap;
}

.filter-btn {
  background: var(--bg-surface);
  color: var(--text-main);
  border: 1px solid rgba(255,255,255,0.1);
  padding: 0.5rem 1rem;
  border-radius: 20px;
  cursor: pointer;
  transition: var(--transition);
}

.filter-btn:hover,
.filter-btn.active {
  background: var(--accent-cyan);
  color: #000;
  border-color: var(--accent-cyan);
}

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

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

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 0.75rem;
  background: var(--bg-surface-light);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 8px;
  color: #fff;
  font-family: inherit;
  transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--accent-cyan);
  box-shadow: 0 0 0 2px rgba(6, 182, 212, 0.2);
}

/* Modal */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(15, 23, 42, 0.8);
  backdrop-filter: blur(5px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 2000;
  opacity: 0;
  pointer-events: none;
  transition: var(--transition);
}

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

.modal-content {
  background: var(--bg-surface);
  width: 90%;
  max-width: 600px;
  padding: 2rem;
  border-radius: 12px;
  border: 1px solid var(--accent-cyan);
  box-shadow: 0 10px 40px rgba(6, 182, 212, 0.2);
  transform: translateY(20px);
  transition: var(--transition);
  position: relative;
}

.modal-overlay.active .modal-content {
  transform: translateY(0);
}

.modal-close {
  position: absolute;
  top: -15px;
  right: -15px;
  background: #ef4444;
  border: 3px solid #fff;
  color: #fff;
  width: 45px;
  height: 45px;
  border-radius: 50%;
  font-size: 1.8rem;
  font-weight: bold;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 15px rgba(239, 68, 68, 0.5);
  transition: all 0.2s ease;
  z-index: 10;
}

.modal-close:hover {
  background: #dc2626;
  transform: scale(1.1);
}

/* Footer */
footer {
  text-align: center;
  padding: 2rem 0;
  color: var(--text-muted);
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  margin-top: 4rem;
}

/* Responsive */
@media (max-width: 768px) {
  .hamburger {
    display: block;
  }
  
  .nav-links {
    position: fixed;
    top: 80px;
    left: 0;
    width: 100%;
    background: var(--bg-surface);
    flex-direction: column;
    padding: 2rem;
    gap: 2rem;
    transform: translateY(-100%);
    opacity: 0;
    pointer-events: none;
    transition: var(--transition);
    border-bottom: 1px solid rgba(255,255,255,0.1);
  }
  
  .nav-links.active {
    transform: translateY(0);
    opacity: 1;
    pointer-events: all;
  }
}