@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;600;700&family=Outfit:wght@400;700;900&display=swap');

:root {
  --font-main: 'Inter', sans-serif;
  --font-heading: 'Outfit', sans-serif;
  --bg-color: #0f172a;
  --text-main: #e2e8f0;
  --text-muted: #94a3b8;
  --primary-gradient: linear-gradient(135deg, #60a5fa 0%, #a855f7 100%);
  --secondary-gradient: linear-gradient(135deg, #38bdf8 0%, #818cf8 100%);
  --glass-bg: rgba(30, 41, 59, 0.7);
  --glass-border: rgba(255, 255, 255, 0.08);
  --card-hover: rgba(51, 65, 85, 0.8);
}

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

body {
  font-family: var(--font-main);
  background-color: var(--bg-color);
  color: var(--text-main);
  font-size: 16px;
  line-height: 1.6;
  overflow-x: hidden;
}

/* Background Canvas */
#particles-js {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
  background: radial-gradient(circle at top right, #1e293b 0%, #0f172a 100%);
}

/* Header */
.header {
  position: fixed;
  top: 0;
  width: 100%;
  padding: 1.25rem 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  z-index: 1000;
  backdrop-filter: blur(12px);
  background: rgba(15, 23, 42, 0.6);
  border-bottom: 1px solid var(--glass-border);
  transition: all 0.3s ease;
}

.header.shrink {
  padding: 0.75rem 2rem;
  background: rgba(15, 23, 42, 0.85);
}

.logo {
  font-family: var(--font-heading);
  font-size: 1.75rem;
  font-weight: 900;
  background: var(--primary-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  color: transparent; /* Fallback */
  letter-spacing: -0.02em;
}

.nav-menu {
  display: flex;
  gap: 2rem;
  align-items: center;
}

.nav-menu a, .nav-menu button {
  color: var(--text-main);
  text-decoration: none;
  font-weight: 600;
  font-size: 0.95rem;
  transition: color 0.3s;
  background: none;
  border: none;
  cursor: pointer;
  font-family: var(--font-main);
}

.nav-menu a:hover, .nav-menu button:hover {
  color: #60a5fa;
  text-shadow: 0 0 8px rgba(96, 165, 250, 0.4);
}

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

/* Mobile Nav */
@media (max-width: 768px) {
  .hamburger-menu {
    display: block;
  }
  
  .nav-menu {
    position: absolute;
    top: 100%;
    right: 0;
    width: 100%;
    flex-direction: column;
    background: rgba(15, 23, 42, 0.95);
    backdrop-filter: blur(16px);
    padding: 2rem;
    gap: 1.5rem;
    transform: translateY(-20px);
    opacity: 0;
    visibility: hidden; /* Changed from display:none to allow transitions */
    transition: all 0.3s ease;
    border-bottom: 1px solid var(--glass-border);
  }

  .nav-menu.active {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }
}

/* Hero Section */
.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  padding: 0 1rem;
}

.hero h1 {
  font-family: var(--font-heading);
  font-size: clamp(3.5rem, 8vw, 6rem);
  font-weight: 900;
  line-height: 1.1;
  margin-bottom: 0.5rem;
  background: var(--primary-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text; /* Standard property */
  animation: gradient-flow 6s ease infinite alternate;
  background-size: 200% auto;
}

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

.typing-text {
  font-size: clamp(1.2rem, 3vw, 1.8rem);
  color: var(--text-muted);
  font-weight: 400;
  height: 2em; /* Reserve height for no layout shift */
  display: flex;
  align-items: center;
}

.typing-text::after {
  content: '|';
  display: inline-block;
  margin-left: 4px;
  animation: blink 1s step-end infinite;
  color: #60a5fa;
}

/* Section Styles */
.fade-section {
  padding: 6rem 1.5rem;
  max-width: 1200px;
  margin: 0 auto;
  opacity: 0;
  transform: translateY(30px);
}

section h2 {
  font-family: var(--font-heading);
  font-size: 2.5rem;
  margin-bottom: 2rem;
  position: relative;
  display: inline-block;
}

section h2::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: -5px;
  width: 60px;
  height: 4px;
  background: var(--secondary-gradient);
  border-radius: 2px;
}

section p {
  color: var(--text-muted);
  font-size: 1.1rem;
  max-width: 700px;
  line-height: 1.8;
}

section a {
  color: #38bdf8;
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: all 0.2s;
}

section a:hover {
  border-bottom-color: #38bdf8;
  filter: brightness(1.2);
}

/* Projects Grid */
.projects-container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  margin-top: 2rem;
}

.project-card {
  background: var(--glass-bg);
  backdrop-filter: blur(10px);
  border: 1px solid var(--glass-border);
  padding: 2rem;
  border-radius: 16px;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  overflow: hidden;
}

.project-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, rgba(255,255,255,0.05) 0%, rgba(255,255,255,0) 100%);
  opacity: 0;
  transition: opacity 0.3s;
}

.project-card:hover {
  transform: translateY(-8px);
  background: var(--card-hover);
  border-color: rgba(99, 102, 241, 0.3);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2), 0 0 20px rgba(96, 165, 250, 0.1);
}

.project-card:hover::before {
  opacity: 1;
}

.project-card h3 {
  font-size: 1.4rem;
  margin-bottom: 0.75rem;
  color: var(--text-main);
  font-weight: 700;
}

.project-card p {
  font-size: 1rem;
  margin-bottom: 1.5rem;
}

.project-card a {
  display: inline-block;
  padding: 0.6rem 1.2rem;
  background: linear-gradient(90deg, #1e293b 0%, #0f172a 100%);
  border: 1px solid var(--glass-border);
  border-radius: 8px;
  color: white;
  font-size: 0.9rem;
  font-weight: 500;
  transition: transform 0.2s;
}

.project-card a:hover {
  transform: scale(1.05);
  border-color: #60a5fa;
  box-shadow: 0 0 15px rgba(96, 165, 250, 0.2);
  border-bottom: 1px solid #60a5fa; /* Override default link style */
  text-decoration: none;
}

/* Footer */
footer {
  text-align: center;
  padding: 4rem 2rem 2rem;
  color: var(--text-muted);
  font-size: 0.9rem;
  border-top: 1px solid var(--glass-border);
  background: rgba(15, 23, 42, 0.4);
}

.footer-disclaimer {
  font-size: 0.8rem;
  margin-top: 0.5rem;
  opacity: 0.6;
}

/* Animations */
@keyframes blink {
  50% { opacity: 0; }
}