/* Global Theme + Header & Navigation Styles (Dark Glass Theme) */
:root {
  /* Brand & Accents */
  --primary-color: #00D1FF;            /* Cyan accent */
  --secondary-color: #7C5CFF;          /* Violet accent */
  --accent-color: #1E5BFF;             /* Blue accent */

  /* Surfaces & Text */
  --bg-1: #0B1426;                     /* Deep navy */
  --bg-2: #091423;                     /* Slightly lighter */
  --bg-3: #0A2037;                     /* Teal-tinted */
  --text-color: #E6EEFF;               /* Soft white */
  --muted-text: #A9B6D9;               /* Muted */

  /* Glass cards */
  --card-bg: rgba(255, 255, 255, 0.06);
  --card-border: rgba(255, 255, 255, 0.12);
  --card-shadow: 0 20px 40px rgba(0, 0, 0, 0.35);
  --card-hover-shadow: 0 30px 60px rgba(0, 0, 0, 0.45);

  /* Gradients */
  --primary-gradient: linear-gradient(135deg, var(--accent-color) 0%, var(--primary-color) 100%);
  --secondary-gradient: linear-gradient(135deg, var(--secondary-color) 0%, var(--primary-color) 100%);

  /* Typography */
  --heading-font: 'Poppins', sans-serif;
  --body-font: 'Inter', sans-serif;

  /* Layout */
  --container-width: 1200px;
  --header-height: 80px;
  --header-height-scrolled: 64px;

  /* Motion */
  --transition-fast: 0.25s ease;
  --transition-medium: 0.45s ease;
  --glow: rgba(0, 209, 255, 0.35);
}

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

body {
  font-family: var(--body-font);
  color: var(--text-color);
  line-height: 1.6;
  overflow-x: hidden;
  background:
    radial-gradient(1200px 600px at 8% 12%, var(--bg-3) 0%, var(--bg-2) 45%, var(--bg-1) 100%),
    radial-gradient(900px 700px at 92% 18%, #072239 0%, var(--bg-2) 50%, var(--bg-1) 100%);
  background-attachment: fixed;
}

/* Ambient animated glow */
body::before {
  content: '';
  position: fixed;
  inset: -15% -10% -10% -15%;
  z-index: -1;
  background: conic-gradient(from 180deg at 50% 50%,
               rgba(124, 92, 255, 0.10),
               rgba(0, 209, 255, 0.12),
               rgba(0, 0, 0, 0) 30%);
  filter: blur(80px);
  opacity: 0.6;
  animation: ambientShift 28s linear infinite;
}

@keyframes ambientShift {
  0%   { transform: translateY(0) rotate(0deg); }
  50%  { transform: translateY(-20px) rotate(180deg); }
  100% { transform: translateY(0) rotate(360deg); }
}

/* Links & Lists */
 a { text-decoration: none; color: inherit; transition: color var(--transition-fast); }
 ul { list-style: none; }

.container { width: 100%; max-width: var(--container-width); margin: 0 auto; padding: 0 20px; }

/* Header */
.site-header {
  position: fixed; top: 0; left: 0; width: 100%;
  height: var(--header-height);
  background: rgba(10, 16, 28, 0.75);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--card-border);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.35);
  z-index: 1000;
  transition: height var(--transition-fast), background var(--transition-fast);
}

.site-header .container {
  display: flex; justify-content: space-between; align-items: center; height: 100%;
}

.site-header.scrolled { height: var(--header-height-scrolled); background: rgba(10, 16, 28, 0.85); }

/* Logo */
.logo { display: flex; align-items: center; height: 100%; }
.logo a { display: flex; align-items: center; gap: 12px; white-space: nowrap; text-decoration: none; }
.logo img {
  height: 54px; width: 54px;
  border-radius: 50%;
  object-fit: cover;
  margin-top: 0;
  /* Modern circular gradient ring */
  border: 2px solid transparent;
  background:
    linear-gradient(#0B1426, #0B1426) padding-box,
    conic-gradient(from 0deg, var(--accent-color), var(--primary-color), var(--secondary-color), var(--accent-color)) border-box;
  box-shadow: 0 10px 18px var(--glow);
}

/* Animated gradient title beside the logo */
.logo span {
  font-family: var(--heading-font);
  font-weight: 700;
  font-size: 2.0rem;
  background-image: linear-gradient(90deg, var(--primary-color), var(--secondary-color), var(--accent-color), var(--primary-color));
  background-size: 200% auto;
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent; color: transparent;
  animation: headerGradientSlide 6s linear infinite;

}

@keyframes headerGradientSlide {
  0% { background-position: 0% 50%; }
  100% { background-position: 200% 50%; }
}

/* Navigation */
.main-nav { display: flex; align-items: center; }
.nav-links { display: flex; gap: 14px; }

.nav-links a {
  font-weight: 500; position: relative;
  padding: 10px 16px; border-radius: 999px;
  color: rgba(255, 255, 255, 0.85);
  transition: all var(--transition-fast);
}

.nav-links a:hover { color: #fff; transform: translateY(-1px); }

.nav-links a.active {
  color: #fff; background: var(--primary-gradient);
  box-shadow: 0 8px 20px var(--glow);
}

/* Remove underline indicator from old style */
.nav-links a.active::after { display: none; }

/* Mobile Toggle */
.mobile-menu-toggle { display: none; background: none; border: none; cursor: pointer; width: 30px; height: 24px; position: relative; z-index: 1001; }
.mobile-menu-toggle span { display: block; width: 100%; height: 2px; background-color: #fff; position: absolute; left: 0; transition: all var(--transition-fast); }
.mobile-menu-toggle span:nth-child(1){ top:0; }
.mobile-menu-toggle span:nth-child(2){ top:50%; transform: translateY(-50%); }
.mobile-menu-toggle span:nth-child(3){ bottom:0; }
.mobile-menu-toggle.active span:nth-child(1){ top:50%; transform: translateY(-50%) rotate(45deg); }
.mobile-menu-toggle.active span:nth-child(2){ opacity:0; }
.mobile-menu-toggle.active span:nth-child(3){ bottom:50%; transform: translateY(50%) rotate(-45deg); }

/* Mobile Menu */
@media (max-width: 768px) {
  .mobile-menu-toggle { display: block; }
  .nav-links {
    position: fixed; top: 0; right: -100%; width: 270px; height: 100vh;
    background: rgba(10, 16, 28, 0.95);
    backdrop-filter: blur(10px);
    flex-direction: column; justify-content: center; align-items: center; gap: 18px;
    transition: right var(--transition-medium);
    box-shadow: -8px 0 24px rgba(0, 0, 0, 0.4);
    z-index: 1000;
  }
  .nav-links.active { right: 0; }
}

/* Responsive tweaks */
@media (max-width: 992px) { .nav-links { gap: 12px; } }
@media (max-width: 576px) {
  .logo img { height: 34px; width: 34px; }
  .logo span { font-size: 1.1rem; }
}

/* Global buttons for consistency across pages */
.btn {
  display: inline-block; padding: 12px 28px; border-radius: 999px;
  font-weight: 600; font-family: var(--heading-font); text-align: center; cursor: pointer;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), background var(--transition-fast);
  position: relative; overflow: hidden; color: #fff; background: var(--primary-gradient);
  box-shadow: 0 10px 24px var(--glow);
}
.btn:hover { transform: translateY(-2px); box-shadow: 0 14px 32px var(--glow); }
.btn-outline { background: transparent; color: #fff; border: 2px solid rgba(255,255,255,0.35); box-shadow: none; }
.btn-outline:hover { background: rgba(255,255,255,0.08); }

/* Utility: Glass card style to reuse across pages */
.glass-card {
  background: var(--card-bg); border: 1px solid var(--card-border); border-radius: 20px;
  box-shadow: var(--card-shadow); backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px);
}
.glass-card:hover { box-shadow: var(--card-hover-shadow); transform: translateY(-6px); }

/* Footer Styles (Dark Glass Theme) */
.site-footer {
  background: rgba(10, 16, 28, 0.75);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-top: 1px solid var(--card-border);
  padding: 60px 0 30px;
  margin-top: 60px;
  position: relative;
}
.site-footer::before {
  content: '';
  position: absolute; inset: 0; pointer-events: none;
  background:
    radial-gradient(500px 250px at 15% -10%, rgba(0, 209, 255, 0.12), rgba(0,0,0,0) 60%),
    radial-gradient(600px 300px at 85% -20%, rgba(124, 92, 255, 0.12), rgba(0,0,0,0) 60%);
  filter: blur(40px);
}

.footer-content {
  display: grid; grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 30px; align-items: start;
}
.footer-content h3, .footer-content h4 {
  font-family: var(--heading-font); font-weight: 600; color: #fff; margin-bottom: 14px;
}

/* Brand */
.footer-brand img { height: 44px; margin-bottom: 14px; }
.footer-brand p { color: var(--muted-text); }

/* Contact */
.footer-contact ul { margin-top: 8px; }
.footer-contact li { display: flex; align-items: center; gap: 12px; margin-bottom: 10px; color: var(--muted-text); }
.footer-contact li i {
  width: 28px; height: 28px; border-radius: 50%; display: inline-flex; align-items: center; justify-content: center;
  background: var(--primary-gradient); color: #fff; box-shadow: 0 8px 18px var(--glow);
  font-size: 0.95rem;
}

/* Links */
.footer-links ul { margin-top: 8px; }
.footer-links ul li { margin-bottom: 8px; }
.footer-links ul li a { color: var(--muted-text); transition: color var(--transition-fast); }
.footer-links ul li a:hover { color: #fff; }

/* Social */
.footer-social .social-icons { display: flex; gap: 12px; }
.footer-social .social-icons a {
  width: 38px; height: 38px; border-radius: 50%;
  display: inline-flex; align-items: center; justify-content: center;
  background: var(--card-bg); border: 1px solid var(--card-border); color: #fff;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), background var(--transition-fast);
}
.footer-social .social-icons a:hover { transform: translateY(-2px); background: var(--primary-gradient); box-shadow: 0 10px 24px var(--glow); }

/* Bottom */
.footer-bottom { border-top: 1px solid var(--card-border); padding-top: 20px; text-align: center; color: var(--muted-text); }

/* Responsive */
@media (max-width: 992px) { .footer-content { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 576px) {
  .footer-content { grid-template-columns: 1fr; }
  .site-footer { padding: 50px 0 24px; }
  .footer-brand img { height: 36px; }
}