:root {
  /* Dark Theme Palette */
  --primary-color: #00d4ff; /* Cyan Neon */
  --secondary-color: #7928ca; /* Purple Neon */
  --accent-color: #ff0080;  /* Pink Neon */
  
  /* Text Colors (Inverted for Dark Mode) */
  --text-dark: #f9fafb;     /* Main text is now light */
  --text-light: #ffffff;    /* Muted text */
  --text-inverse: #111827;  /* For buttons */
  
  /* Backgrounds */
  --bg-dark: #0f172a;       /* Deep Slate */
  --bg-darker: #020617;     /* Almost Black */
  --white: #ffffff;         /* Pure White */
  
  /* Glassmorphism Variables */
  --glass-bg: rgba(255, 255, 255, 0.03);
  --glass-border: rgba(255, 255, 255, 0.08);
  --glass-highlight: rgba(255, 255, 255, 0.15);
  --glass-shadow: 0 4px 30px rgba(0, 0, 0, 0.1);
  
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --container-width: 1200px;
  --font-main: 'Inter', system-ui, -apple-system, sans-serif;
  --radius: 16px;
}

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

body {
  font-family: var(--font-main);
  color: var(--text-dark);
  line-height: 1.6;
  background-color: var(--bg-dark);
  /* Liquid Background Effect */
  background: radial-gradient(circle at top left, #1a237e, transparent 40%),
              radial-gradient(circle at bottom right, #311b92, transparent 40%),
              radial-gradient(circle at center, #0f172a, #000000);
  background-attachment: fixed;
  min-height: 100vh;
}

a {
  text-decoration: none;
  color: inherit;
}

ul {
  list-style: none;
}

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

/* Utilities */
.container {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 20px;
}

.btn {
  display: inline-block;
  padding: 12px 28px;
  background: linear-gradient(135deg, var(--secondary-color), var(--primary-color));
  color: var(--white);
  border-radius: 50px;
  font-weight: 600;
  transition: var(--transition);
  border: none;
  cursor: pointer;
  box-shadow: 0 4px 15px rgba(0, 212, 255, 0.3);
  position: relative;
  overflow: hidden;
  z-index: 1;
}

.btn::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  opacity: 0;
  z-index: -1;
  transition: var(--transition);
}

.btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(0, 212, 255, 0.5);
}

.btn:hover::before {
  opacity: 1;
}

.btn-large {
  padding: 16px 36px;
  font-size: 1.1rem;
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.05);
  color: var(--primary-color);
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(5px);
  box-shadow: none;
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.1);
  color: #fff;
  border-color: var(--primary-color);
}

.project-cta {
  display: inline-block;
  margin-top: 8px;
  padding: 8px 16px;
  font-size: 0.9rem;
}

.cta-microcopy {
  margin-top: 8px;
  font-size: 0.9rem;
  color: #94a3b8;
}



.text-center { text-align: center; }
.section-padding { padding: 100px 0; }
.bg-off-white { background-color: transparent; }

/* Typography */
h1, h2, h3, h4 {
  line-height: 1.2;
  margin-bottom: 1rem;
  font-weight: 700;
  color: var(--text-dark);
  letter-spacing: -0.02em;
}

h1 { 
  font-size: 3.5rem; 
  background: linear-gradient(to right, #fff, #94a3b8);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  text-shadow: 0 10px 30px rgba(0,0,0,0.2);
}

h2 { font-size: 2.5rem; margin-bottom: 2rem; }
h3 { font-size: 1.5rem; margin-bottom: 1rem; color: var(--primary-color); }
p { margin-bottom: 1rem; color: var(--text-light); font-size: 1.05rem; }

/* Header & Nav */
header {
  background: rgba(15, 23, 42, 0.6);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--glass-border);
  position: sticky;
  top: 0;
  z-index: 100;
  transition: var(--transition);
}

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

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
}

.logo-img {
  height: 75px;
  width: auto;
  transition: var(--transition);
}

.logo-text {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--white);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  display: flex;
  flex-direction: column;
  line-height: 0.9;
}

.logo-text span {
  font-size: 0.6em;
  color: var(--primary-color);
  letter-spacing: 0.35em;
  margin-left: 2px;
}

.logo:hover .logo-img {
  filter: drop-shadow(0 0 8px rgba(0, 212, 255, 0.4));
}

.nav-links {
  display: flex;
  gap: 30px;
}

.nav-links a {
  font-weight: 500;
  color: var(--text-light);
  transition: var(--transition);
  position: relative;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--white);
  text-shadow: 0 0 10px rgba(255,255,255,0.3);
}

.nav-links a::after {
  content: '';
  position: absolute;
  width: 0;
  height: 2px;
  bottom: -4px;
  left: 0;
  background: var(--primary-color);
  transition: var(--transition);
}

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

.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
  color: var(--text-dark);
}

/* Glass Card Mixin Style */
.glass-panel {
  background: var(--glass-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--glass-border);
  box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.2);
  border-radius: var(--radius);
}

/* Hero Section */
.hero {
  padding: 140px 0 100px;
  background: transparent;
  text-align: center;
  position: relative;
}

.hero::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(121, 40, 202, 0.15) 0%, rgba(0,0,0,0) 70%);
  transform: translate(-50%, -50%);
  z-index: -1;
  pointer-events: none;
}

.hero p {
  font-size: 1.35rem;
  max-width: 650px;
  margin: 0 auto 2.5rem;
  color: #cad1d9;
}

/* Services Grids */
.services-grid, .portfolio-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 30px;
}

.service-card {
  background: var(--glass-bg);
  backdrop-filter: blur(12px);
  border: 1px solid var(--glass-border);
  padding: 40px 30px;
  border-radius: var(--radius);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.service-card:hover {
  transform: translateY(-8px);
  background: rgba(255, 255, 255, 0.05);
  border-color: var(--glass-highlight);
  box-shadow: 0 15px 40px rgba(0, 0, 0, 0.3);
}

/* Project Cards */
.project-card {
  background: var(--glass-bg);
  backdrop-filter: blur(12px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: var(--transition);
}

.project-card:hover {
  transform: translateY(-8px);
  border-color: var(--glass-highlight);
  box-shadow: 0 15px 40px rgba(0, 0, 0, 0.3);
}

.project-img {
  height: 220px;
  background-color: rgba(0,0,0,0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-light);
  font-weight: 500;
  border-bottom: 1px solid var(--glass-border);
}

/* Image hover scale for engagement (keeps layout stable and performant) */
.project-img {
  overflow: hidden;
}
.project-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
  will-change: transform;
}
.project-card:hover .project-img img {
  transform: scale(1.06);
}

.project-meta {
  font-size: 0.95rem;
  color: #cbd5e1;
  margin-top: 8px;
}
.mini-cta {
  display: inline-block;
  margin-top: 12px;
  font-size: 0.95rem;
  color: var(--primary-color);
}

.project-content {
  padding: 24px;
}

.tag {
  background: rgba(0, 212, 255, 0.1);
  padding: 4px 12px;
  border-radius: 20px;
  font-size: 0.75rem;
  color: #00d4ff;
  border: 1px solid rgba(0, 212, 255, 0.2);
}

/* Forms */
.contact-form {
  background: var(--glass-bg);
  backdrop-filter: blur(16px);
  border: 1px solid var(--glass-border);
  padding: 40px;
  border-radius: var(--radius);
  max-width: 700px;
  margin: 0 auto;
}

.form-group {
  margin-bottom: 32px;
}

.form-group label {
  display: block;
  color: var(--text-dark);
  font-size: 0.95rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  margin-bottom: 12px;
  font-weight: 600;
}

.checkbox-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 12px 18px;
  margin-top: 8px;
}

.form-group .checkbox-item {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 1rem;
  color: var(--text-light);
  text-transform: none;
  letter-spacing: normal;
  margin-bottom: 0;
  cursor: pointer;
  padding: 8px;
  border-radius: 8px;
  transition: background-color 0.2s;
}

.form-group .checkbox-item:hover {
  background: rgba(255, 255, 255, 0.05);
}

.form-group .checkbox-item input {
  width: 18px;
  height: 18px;
  margin: 0;
  accent-color: var(--primary-color);
  -webkit-appearance: auto;
  appearance: auto;
  box-shadow: none;
  background: transparent;
  border: none;
}

.form-group .checkbox-grid + input {
  margin-top: 12px;
}

.form-group input,
.form-group textarea, 
.form-group select {
  width: 100%;
  padding: 14px;
  background: rgba(0, 0, 0, 0.2);
  border: 1px solid var(--glass-border);
  border-radius: 8px;
  color: var(--text-dark);
  font-family: inherit;
  transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--primary-color);
  background: rgba(0, 0, 0, 0.4);
  box-shadow: 0 0 0 2px rgba(0, 212, 255, 0.2);
}

input:-webkit-autofill,
input:-webkit-autofill:hover, 
input:-webkit-autofill:focus, 
input:-webkit-autofill:active{
    -webkit-box-shadow: 0 0 0 30px #0f172a inset !important;
    -webkit-text-fill-color: white !important;
}

.error-msg {
  color: #ef4444;
  margin-top: 8px;
  font-size: 0.85rem;
}

.form-status {
  padding: 15px;
  border-radius: 8px;
  margin-bottom: 20px;
}

.form-status.success {
  background: rgba(16, 185, 129, 0.2);
  color: #34d399;
  border: 1px solid rgba(16, 185, 129, 0.3);
}

.form-status.error {
  background: rgba(239, 68, 68, 0.2);
  color: #f87171;
  border: 1px solid rgba(239, 68, 68, 0.3);
}

/* Footer */
footer {
  background: rgba(2, 6, 23, 0.8);
  border-top: 1px solid var(--glass-border);
  color: var(--text-light);
  padding: 80px 0 40px;
}

.footer-col h4 {
  color: var(--white);
  margin-bottom: 24px;
}

.footer-col a {
  color: var(--text-light);
}

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

.copyright {
  border-top: 1px solid var(--glass-border);
  padding-top: 40px;
  color: #64748b;
}

@media (max-width: 768px) {
  h1 { font-size: 2.5rem; }
  .mobile-menu-btn { display: block; color: var(--text-dark); }
  body { padding-bottom: 110px; }
  .nav-links {
    position: absolute;
    top: 80px;
    left: 0;
    width: 100%;
    background: rgba(15, 23, 42, 0.95);
    backdrop-filter: blur(20px);
    flex-direction: column;
    padding: 30px;
    border-bottom: 1px solid var(--glass-border);
    transform: translateY(-150%);
    transition: var(--transition);
    gap: 20px;
    text-align: center;
  }
  .nav-links.active {
    transform: translateY(0);
    box-shadow: 0 10px 30px rgba(0,0,0,0.5);
  }
  .floating-cta {
    display: inline-flex;
    flex-direction: column;
    align-items: center;
    gap: 2px;
  }
  .hero-btns {
    display: flex;
    flex-direction: column;
    gap: 12px;
    align-items: center;
  }
  .hero-btns .btn {
    margin-left: 0 !important;
  }
}