/* =========================================
   1. VARIABLES (Dark Mode / Cyber Theme)
   ========================================= */
:root {
  --bg-body: #0d1117; /* GitHub Dark Dimmed */
  --bg-card: #161b22;
  --nav-bg: rgba(13, 17, 23, 0.95);

  --text-main: #e6edf3;
  --text-muted: #8b949e;

  --accent: #00ff41; /* Hacker Neon Green */
  --border: #30363d;

  --font-stack: "Courier New", Courier, monospace;
  --shadow: 0 0 15px rgba(0, 255, 65, 0.1);
}

/* =========================================
   2. GLOBAL RESET
   ========================================= */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  transition: all 0.3s ease;
}

body {
  color: var(--text-main);
  font-family: var(--font-stack);
  line-height: 1.6;
  padding-top: 80px; /* Space for fixed nav */
  font-weight: 600;
}

a {
  text-decoration: none;
  color: inherit;
}
ul {
  list-style: none;
}

/* Particle Background */
/* Particle Background */
[id^="tsparticles"] {
  position: fixed !important;
  width: 100%;
  height: 100%;
  top: 0;
  left: 0;
  z-index: -1 !important;
  background-color: var(--bg-body);
}

/* =========================================
   3. NAVIGATION
   ========================================= */
.navbar {
  position: fixed;
  top: 0;
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 5%;
  background: var(--nav-bg);
  backdrop-filter: blur(5px);
  border-bottom: 1px solid var(--border);
  z-index: 1000;
}

.logo {
  font-weight: 800;
  font-size: 1.5rem;
  letter-spacing: -1px;
}
.logo span {
  color: var(--accent);
}

.nav-links {
  display: flex;
  gap: 2.5rem;
  align-items: center;
}

.nav-links a {
  font-size: 1.1rem;
  color: var(--text-main);
  position: relative;
  font-weight: 700;
  letter-spacing: 0.5px;
}

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

/* Contact Button Style */
.nav-links .nav-btn {
  background-color: var(--accent);
  color: #000 !important;
  padding: 10px 24px;
  border-radius: 5px;
  font-weight: 800;
  box-shadow: 0 0 10px rgba(0, 255, 65, 0.3);
  border: 1px solid var(--accent);
}
.nav-links .nav-btn:hover {
  background-color: transparent;
  color: var(--accent) !important;
  box-shadow: 0 0 20px rgba(0, 255, 65, 0.6);
}

/* Fluid Underline Animation (For non-buttons) */
.nav-links a:not(.nav-btn)::after {
  content: "";
  position: absolute;
  width: 100%;
  height: 2px;
  bottom: 0;
  left: 0;
  background-color: var(--accent);
  transform: scaleX(0);
  transform-origin: bottom right;
  transition: transform 0.35s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  box-shadow: 0 0 10px var(--accent);
}
.nav-links a:not(.nav-btn)::after {
  transform: scaleX(0);
}
.nav-links a:not(.nav-btn):hover::after {
  transform: scaleX(1);
  transform-origin: bottom left;
}
.nav-links a.active:not(.nav-btn)::after {
  transform: scaleX(1);
  transform-origin: bottom left;
}

/* Mobile Menu Burger */
.burger {
  display: none;
  cursor: pointer;
}
.burger div {
  width: 25px;
  height: 3px;
  background: var(--accent);
  margin: 5px;
  transition: 0.3s;
}

/* =========================================
   4. LAYOUT COMPONENTS
   ========================================= */
.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 20px;
}
.section {
  padding: 4rem 0;
}
.text-center {
  text-align: center;
}

h1 {
  font-size: 3rem;
  margin-bottom: 1rem;
  color: #fff;
  font-weight: 800;
}
h2 {
  font-size: 2.2rem;
  margin-bottom: 2rem;
  border-bottom: 1px solid var(--border);
  display: inline-block;
  padding-bottom: 10px;
  color: #fff;
  font-weight: 700;
}
h3 {
  font-size: 1.5rem;
  color: var(--accent);
  margin-bottom: 0.5rem;
  font-weight: 700;
}
p {
  font-size: 1.05rem;
}

/* Profile Image */
.profile-img {
  width: 280px;
  height: 280px;
  border-radius: 50%;
  object-fit: cover;
  margin-bottom: 2rem;
  border: 5px solid var(--accent);
  box-shadow: 0 0 25px rgba(0, 255, 65, 0.4);
}

/* Cards */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 2rem;
}
.card {
  background: var(--bg-card);
  padding: 2rem;
  border-radius: 8px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
}
.card:hover {
  transform: translateY(-5px);
  border-color: var(--accent);
}

/* Forms */
input,
textarea {
  width: 100%;
  padding: 15px;
  margin-bottom: 1rem;
  background: #0d1117;
  border: 1px solid var(--border);
  border-radius: 4px;
  color: #fff;
  font-family: var(--font-stack);
  font-size: 1rem;
  font-weight: 600;
}
input:focus,
textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 5px var(--accent);
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 12px 28px;
  background: transparent;
  color: var(--accent);
  border: 1px solid var(--accent);
  border-radius: 4px;
  font-weight: 700;
  margin-top: 1rem;
  font-size: 1rem;
}
.btn:hover {
  background: rgba(0, 255, 65, 0.1);
  box-shadow: 0 0 15px rgba(0, 255, 65, 0.4);
}

/* =========================================
   5. HOME PAGE ELEMENTS (Marquee, Typewriter, Cards)
   ========================================= */
/* Typewriter */
.typewriter {
  color: var(--accent);
  font-weight: 700;
}
.cursor {
  display: inline-block;
  width: 3px;
  background-color: var(--text-main);
  animation: blink 1s infinite;
}
@keyframes blink {
  0%,
  100% {
    opacity: 1;
  }
  50% {
    opacity: 0;
  }
}

/* Expertise Cards */
.expertise-icon {
  font-size: 3rem;
  color: var(--accent);
  margin-bottom: 1rem;
}
.expertise-card {
  text-align: center;
  transition:
    transform 0.3s ease,
    border-color 0.3s ease;
}
.expertise-card:hover {
  transform: translateY(-10px);
  border-color: var(--accent);
}

/* Marquee */
.marquee-section {
  background: var(--bg-card);
  padding: 2rem 0;
  overflow: hidden;
  white-space: nowrap;
  position: relative;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.marquee-content {
  display: inline-block;
  animation: scroll 20s linear infinite;
}
.tech-item {
  display: inline-block;
  padding: 0 2rem;
  font-size: 1.2rem;
  font-weight: bold;
  color: var(--text-muted);
}
.tech-item i {
  color: var(--accent);
  margin-right: 8px;
}
@keyframes scroll {
  0% {
    transform: translateX(0);
  }
  100% {
    transform: translateX(-50%);
  }
}

/* =========================================
   6. PROJECT TECH BADGES
   ========================================= */
.tech-badges {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-top: 10px;
  margin-bottom: 20px;
}
.badge {
  font-size: 0.75rem;
  font-weight: 700;
  padding: 4px 10px;
  border-radius: 50px;
  background: var(--bg-body);
  border: 1px solid var(--border);
  color: var(--text-muted);
  transition: all 0.3s ease;
}
.badge:hover {
  transform: translateY(-2px);
  color: #fff;
}
.badge.python {
  border-color: #3776ab;
  color: #3776ab;
}
.badge.python:hover {
  background: #3776ab;
  color: white;
}
.badge.linux {
  border-color: #fcc624;
  color: #fcc624;
}
.badge.linux:hover {
  background: #fcc624;
  color: black;
}
.badge.java {
  border-color: #f89820;
  color: #f89820;
}
.badge.java:hover {
  background: #f89820;
  color: white;
}
.badge.network {
  border-color: #00ff41;
  color: #00ff41;
}
.badge.network:hover {
  background: #00ff41;
  color: black;
}
.badge.security {
  border-color: #ff0055;
  color: #ff0055;
}
.badge.security:hover {
  background: #ff0055;
  color: white;
}

/* =========================================
   7. SOCIAL ICONS & FOOTER
   ========================================= */
.social-icons {
  margin-top: 1.5rem;
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
}
.social-icons a {
  font-size: 1.8rem;
  color: var(--text-muted);
  transition: 0.3s;
  display: flex;
  align-items: center;
  justify-content: center;
}
.social-icons a:hover {
  color: var(--accent);
  transform: scale(1.2);
  text-shadow: 0 0 10px var(--accent);
}

footer {
  background: var(--nav-bg);
  border-top: 1px solid var(--border);
  padding: 2rem 5%;
  text-align: center;
  margin-top: auto;
}
.footer-text {
  color: var(--text-muted);
  font-size: 0.9rem;
}
.footer-text span {
  color: var(--accent);
}

/* =========================================
   8. MOBILE RESPONSIVENESS
   ========================================= */
@media (max-width: 768px) {
  .nav-links {
    position: absolute;
    right: 0;
    top: 70px;
    height: 90vh;
    background: var(--bg-card);
    flex-direction: column;
    align-items: center;
    justify-content: flex-start;
    padding-top: 4rem;
    width: 100%;
    transform: translateX(100%);
    transition: 0.4s;
    border-top: 1px solid var(--border);
  }
  .nav-links.active {
    transform: translateX(0%);
  }
  .burger {
    display: block;
  }
  h1 {
    font-size: 2.2rem;
  }
  .profile-img {
    width: 200px;
    height: 200px;
  }
}

/* =========================================
   9. GITHUB CALENDAR OVERRIDES
   ========================================= */
.github-card {
    max-width: 900px;
    margin: 0 auto;
    padding: 20px;
    background: rgba(22, 27, 34, 0.6); /* Glass effect */
    backdrop-filter: blur(10px);
    border: 1px solid var(--accent); /* Neon Border */
    border-radius: 8px;
    box-shadow: 0 0 15px rgba(0, 255, 65, 0.1); /* Subtle Neon Glow */
}

.calendar {
    border: none !important; 
    font-family: var(--font-stack) !important;
    width: 100% !important;
}
.calendar .width-full > .float-left {
    display: none; /* Hide 'Learn how we count contributions' */
}
.calendar text.ContributionCalendar-label {
    fill: #e6edf3 !important; /* White Text */
    font-size: 10px;
}
.calendar .ContributionCalendar-day, 
.calendar .ContributionCalendar-day[data-level="0"] {
    fill: #161b22 !important; /* Dark Empty Blocks */
    shape-rendering: geometricPrecision;
    outline: 1px solid rgba(27, 31, 35, 0.06);
    outline-offset: -1px;
    rx: 2; /* Rounded Corners */
}
/* Contribution Levels (Green Gradient) */
.calendar .ContributionCalendar-day[data-level="1"] { fill: #0e4429 !important; }
.calendar .ContributionCalendar-day[data-level="2"] { fill: #006d32 !important; }
.calendar .ContributionCalendar-day[data-level="3"] { fill: #26a641 !important; }
.calendar .ContributionCalendar-day[data-level="4"] { fill: #39d353 !important; }

/* Tooltip Styling */
.calendar .day-tooltip {
    background: var(--bg-card);
    color: #fff;
    border: 1px solid var(--accent);
}

/* Sidebar Year Buttons */
.year-btn {
    background: transparent;
    border: none;
    color: var(--text-muted);
    padding: 8px 16px;
    border-radius: 6px;
    cursor: pointer;
    font-family: inherit;
    text-align: left;
    transition: all 0.2s ease;
}
.year-btn:hover {
    background: rgba(255, 255, 255, 0.1);
    color: #fff;
}
.year-btn.active {
    background: #1f6feb; /* GitHub Blue */
    color: #fff;
    color: #fff;
    font-weight: bold;
}

/* GitHub Raw HTML Cleanup */
.calendar .sr-only { display: none !important; } /* Hide 'Skip to contributions' */
.calendar h2 { 
    color: #fff !important; 
    font-size: 1.5rem !important; 
    margin-bottom: 20px !important;
    text-align: left !important;
}
.calendar .float-right { display: none !important; } /* Hide default controls if any */
.calendar table { width: 100% !important; }