/*
Theme Name: Energy Research
Theme URI: https://github.com/neupanesujan/mywebsite
Author: Sujan Neupane
Author URI: https://github.com/neupanesujan
Description: A modern, premium WordPress theme tailored for the Energy sector, Research, Industrial Engineering, and Optimization. Features a dark mode aesthetic with vibrant neon accents and glassmorphism.
Version: 1.0.0
License: GNU General Public License v2 or later
License URI: http://www.gnu.org/licenses/gpl-2.0.html
Text Domain: energy-research
*/

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

:root {
  --bg-primary: #0a0f18; /* Deep dark blue */
  --bg-secondary: #121b2b;
  --text-primary: #e0e6ed;
  --text-secondary: #94a3b8;
  --accent-green: #00ff88; /* Energetic green */
  --accent-blue: #00b8ff; /* High-tech blue */
  --gradient-accent: linear-gradient(135deg, var(--accent-blue), var(--accent-green));
  --glass-bg: rgba(18, 27, 43, 0.7);
  --glass-border: rgba(255, 255, 255, 0.05);
  --shadow-neon: 0 0 15px rgba(0, 255, 136, 0.3);
  --shadow-soft: 0 4px 20px rgba(0,0,0,0.4);
  --transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
}

body {
  margin: 0;
  padding: 0;
  font-family: 'Inter', sans-serif;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  color: #fff;
  margin-bottom: 1rem;
}

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

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

/* Glassmorphism Classes */
.glass-panel {
  background: var(--glass-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--glass-border);
  border-radius: 16px;
  box-shadow: var(--shadow-soft);
}

/* Button */
.btn-primary {
  display: inline-block;
  background: var(--gradient-accent);
  color: #0a0f18;
  padding: 12px 28px;
  border-radius: 50px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  border: none;
  cursor: pointer;
  transition: var(--transition);
  box-shadow: 0 4px 15px rgba(0, 255, 136, 0.2);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-neon);
  color: #000;
}

/* Header */
.site-header {
  position: fixed;
  top: 0;
  width: 100%;
  z-index: 1000;
  padding: 20px 0;
  transition: var(--transition);
}

.site-header.scrolled {
  padding: 10px 0;
  background: var(--glass-bg);
  backdrop-filter: blur(15px);
  border-bottom: 1px solid var(--glass-border);
}

.header-container {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0 20px;
}

.site-branding a {
  font-size: 1.5rem;
  font-weight: 700;
  color: #fff;
  text-transform: uppercase;
  letter-spacing: 2px;
}

.site-branding span {
  color: var(--accent-green);
}

.main-navigation ul {
  list-style: none;
  display: flex;
  gap: 30px;
  margin: 0;
  padding: 0;
}

.main-navigation a {
  color: var(--text-primary);
  font-weight: 600;
  font-size: 0.95rem;
  text-transform: uppercase;
  position: relative;
}

.main-navigation a::after {
  content: '';
  position: absolute;
  width: 0;
  height: 2px;
  bottom: -4px;
  left: 0;
  background: var(--gradient-accent);
  transition: var(--transition);
}

.main-navigation a:hover::after {
  width: 100%;
}

/* Hero Section */
.hero-section {
  height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  text-align: center;
  padding: 0 20px;
  overflow: hidden;
}

.hero-bg-anim {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 800px;
  height: 800px;
  background: radial-gradient(circle, rgba(0,255,136,0.15) 0%, rgba(10,15,24,0) 70%);
  transform: translate(-50%, -50%);
  animation: pulse 8s infinite alternate;
  z-index: -1;
}

@keyframes pulse {
  0% { transform: translate(-50%, -50%) scale(1); opacity: 0.5; }
  100% { transform: translate(-50%, -50%) scale(1.2); opacity: 1; }
}

.hero-content h1 {
  font-size: 4rem;
  line-height: 1.1;
  margin-bottom: 20px;
  background: linear-gradient(to right, #fff, var(--text-secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

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

.hero-content p {
  font-size: 1.2rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto 40px;
}

/* Grid Section */
.research-grid {
  max-width: 1200px;
  margin: 100px auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
  padding: 0 20px;
}

.research-card {
  padding: 40px 30px;
  text-align: center;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.research-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--gradient-accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: var(--transition);
}

.research-card:hover {
  transform: translateY(-10px);
  box-shadow: 0 10px 30px rgba(0,0,0,0.5);
}

.research-card:hover::before {
  transform: scaleX(1);
}

.research-card-icon {
  font-size: 3rem;
  margin-bottom: 20px;
  background: var(--gradient-accent);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.research-card h3 {
  font-size: 1.5rem;
  margin-bottom: 15px;
}

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

/* Footer */
.site-footer {
  background: var(--bg-secondary);
  padding: 40px 20px;
  text-align: center;
  border-top: 1px solid var(--glass-border);
  margin-top: 60px;
}

.site-footer p {
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin: 0;
}