/* =========================
   Root variables
========================= */
:root {
  --primary-color: #58a6ff;
  --bg-color: #0d1117;
  --terminal-bg: #161b22;
  --text-color: #c9d1d9;
  --border-color: #30363d;
  --success-color: #3fb950;
  --error-color: #f85149;
}

/* =========================
   Global styles
========================= */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: 'Fira Code', monospace;
}

html {
  scroll-behavior: smooth;
}

body {
  background-color: var(--bg-color);
  color: var(--text-color);
  line-height: 1.6;
}

/* =========================
   Navbar
========================= */
.navbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 2rem;
  background-color: var(--terminal-bg);
  border-bottom: 1px solid var(--border-color);
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
  position: fixed;
  width: 90%;
  margin: 3px 5% 0;
  top: 0;
  height: 5.5%;
  z-index: 1000;
  border-radius: 8px;
}

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

.logo {
  font-size: 1.2rem;
  color: var(--primary-color);
  cursor: pointer;
  text-decoration: none;
}

.nav-buttons {
  display: flex;
  gap: 1rem;
}

.nav-buttons button {
  background: none;
  border: 1px solid var(--border-color);
  color: var(--text-color);
  padding: 0.5rem 1rem;
  border-radius: 4px;
  cursor: pointer;
  transition: all 0.3s;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.nav-buttons button:hover {
  border-color: var(--primary-color);
  color: var(--primary-color);
  transform: translateY(-2px);
}

.nav-right {
  background: none;
  border: 1px solid var(--border-color);
  color: var(--text-color);
  padding: 0.3rem 1.5rem;
  border-radius: 4px;
  cursor: pointer;
  transition: all 0.3s;
  display: flex;
  align-items: center;
  gap: 5.5rem;
}

.social-links {
  display: flex;
  gap: 1rem;
}

.social-links a {
  color: var(--text-color);
  transition: color 0.3s;
}

.social-links a:hover {
  color: var(--primary-color);
}

/* =========================
   Terminal / Input
========================= */
.terminal-input-container {
  position: relative;
  width: 35%;
}

.terminal-input {
  width: 100%;
  padding: 0.5rem 1rem 0.5rem 2rem;
  background-color: var(--bg-color);
  border: 1px solid var(--border-color);
  border-radius: 6px;
  color: var(--text-color);
  font-size: 14px;
}

.prompt {
  position: absolute;
  left: 10px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--success-color);
}

/* =========================
   Modal
========================= */
.help-modal {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0,0,0,0.5);
  z-index: 2000;
}

.modal-content {
  background: var(--terminal-bg);
  margin: 10% auto;
  padding: 2rem;
  width: 60%;
  border-radius: 8px;
  position: relative;
}

.command-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
  margin-top: 1rem;
}

/* =========================
   Terminal Container
========================= */
.terminal-container {
  margin: 100px auto 0;
  padding: 2rem;
  max-width: 1200px;
  border-radius: 10px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
  backdrop-filter: blur(10px);
}

/* =========================
   Sections
========================= */
.section {
  padding: 4rem 2rem;
  min-height: 100vh;
  opacity: 0;
  transform: translateY(20px);
  transition: all 0.5s;
  width: 90%;
  margin: 0 5%;
}

.section.active {
  opacity: 1;
  transform: translateY(0);
}

.content-box {
  background: var(--terminal-bg);
  padding: 2rem;
  border-radius: 8px;
  border: 1px solid var(--border-color);
  margin: 2rem 0;
}

/* =========================
   Profile
========================= */
.profile {
  display: flex;
  gap: 4rem;
  align-items: center;
  margin-top: 2rem;
}

.bio {
  padding: 1.5rem;
  border: 2px solid var(--border-color);
  border-radius: 6px;
  transition: transform 0.3s;
}

.profile-img {
  width: 500px;
  height: 400px;
  border-radius: 2%;
  border: 1px solid var(--primary-color);
}

/* =========================
   Skills
========================= */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 1.5rem;
  margin-top: 2rem;
}

.skill-card {
  padding: 1.5rem;
  border: 1px solid var(--border-color);
  border-radius: 6px;
  text-align: center;
  transition: transform 0.3s;
}

.skill-card:hover {
  transform: translateY(-5px);
  border-color: var(--primary-color);
}

/* =========================
   Projects Section
========================= */
.projects-grid {
  display: flex;
  flex-direction: column;
  gap: 2rem;
  margin-top: 2rem;
}

.project-card {
  display: flex;
  background: var(--terminal-bg);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  overflow: hidden;
  transition: transform 0.3s ease;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
  height: 500px;
}

.project-card.reverse {
  flex-direction: row-reverse;
}

.project-card:hover {
  transform: translateY(-5px);
  border-color: var(--primary-color);
}

/* Images */
.project-images {
  flex: 1;
  display: flex;
  overflow: hidden;
  max-width: 50%;
}

.project-images img {
  width: 100%;
  flex-shrink: 0;
  object-fit: cover;
}

.project-card:hover .project-images img {
  animation: slide 12s infinite;
}

@keyframes slide {
  0% { transform: translateX(0); }
  33% { transform: translateX(-100%); }
  66% { transform: translateX(-200%); }
  100% { transform: translateX(0); }
}

/* Info Section */
.project-info {
  flex: 1;
  padding: 1rem;
  display: flex;
  flex-direction: column;
  justify-content: first baseline;
}

.project-name {
  font-family: 'Courier New', monospace;
  font-size: 1.5rem;
  color: var(--primary-color);
  margin-bottom: 1rem;
  padding: 0.3rem 0.8rem;
  border: 1px solid var(--primary-color);
  border-radius: 6px;
  display: inline-block;
}

.project-desc {
  font-size: 1.1rem;
  color: var(--text-color);
  line-height: 1.6;
  margin-bottom: 1.5rem;
  padding: 0.3rem 0.8rem;
  border: 1px solid var(--primary-color);
  border-radius: 6px;
  display: inline-block;
}

/* Tools & Links */
.tools span {
  font-family: 'Fira Code', monospace;
  font-size: 0.9rem;
  color: #0ad325;
  background: rgba(126, 231, 135, 0.1);
  padding: 0.5rem 1rem;
  border-radius: 1px;
  display: inline-block;
  margin: 0 5px 10px 0;
}

.links {
  margin-top: 1rem;
  padding: 0.3rem 0.8rem;
  border: 1px solid var(--primary-color);
  border-radius: 6px;
  display: inline-block;
}

.links a {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  margin-right: 15px;
  color: var(--primary-color);
  text-decoration: none;
  font-weight: 500;
  transition: all 0.3s ease;
}

.links a:hover {
  color: #79c0ff;
  transform: translateX(5px);
}

.links i {
  font-size: 0.9rem;
}

/* =========================
   Education Timeline
========================= */
.education-item, .education-node {
  padding: 1rem;
  border: 1px solid var(--border-color);
  border-radius: 6px;
  margin-bottom: 1rem;
}

.education-tree {
  position: relative;
  padding: 2rem 0;
  margin-left: 2rem;
}

.education-node {
  position: relative;
  margin-bottom: 3rem;
  padding: 1.5rem;
  background: var(--terminal-bg);
  border-radius: 8px;
  border: 1px solid var(--border-color);
  width: 80%;
  transition: transform 0.3s ease;
}

.education-node:hover { transform: translateX(10px); }

.education-node::before {
  content: '';
  position: absolute;
  left: -30px;
  top: 24px;
  width: 20px;
  height: 2px;
  background: var(--primary-color);
}

.education-node::after {
  content: '';
  position: absolute;
  left: -30px;
  height: 100%;
  width: 2px;
  background: var(--primary-color);
}

.education-node:last-child::after { height: 24px; }

.node-header {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1rem;
}

.node-header i { font-size: 1.5rem; }

.duration {
  margin-left: auto;
  color: #7ee787;
  font-family: 'Fira Code', monospace;
  font-size: 0.9rem;
}

.institution {
  color: var(--primary-color);
  font-size: 1.1rem;
  margin-bottom: 0.5rem;
}

.education-node p {
  margin: 0.3rem 0;
  color: var(--text-color);
}

.node-body { padding-left: 2.5rem; }

/* =========================
   Command History
========================= */
.command-history {
  min-height: 300px;
  margin-bottom: 1rem;
  padding: 1rem;
  border: 1px solid var(--border-color);
  border-radius: 6px;
}

/* =========================
   About Section
========================= */
#about h2 {
  font-family: 'Courier New', monospace;
  color: var(--primary-color);
  font-size: 1.8rem;
  margin-bottom: 1.5rem;
}

.about-terminal {
  font-family: 'Courier New', monospace;
  background: #000000;
  border-radius: 6px;
  padding: 1.5rem;
  color: #cbd5e1;
  line-height: 1.6;
  overflow-x: auto;   /* responsive horizontal scroll */
}

.about-item { margin-bottom: 1rem; }

.about-label {
  display: block;
  background-color: #040711;
  font-variant: small-caps;
  color: #38bdf8;
  font-weight: bold;
  margin-bottom: 0.3rem;
  font-size: 1.3rem;
}

.about-text {
  display: block;
  color: #bbc3cc;
  font-size: 1.2rem;
  word-wrap: break-word; /* wrap text on smaller screens */
}

.about-text a {
  color: #7ee787;
  text-decoration: none;
}

.about-text a:hover {
  color: #38bdf8;
  text-decoration: underline;
}

/* =========================
   Media Queries (Responsive)
========================= */
@media (max-width: 1024px) {
  .profile { flex-direction: column; gap: 3rem; }
  .project-card { height: auto; flex-direction: column; }
  .project-images, .project-info { max-width: 100%; }
}

@media (max-width: 768px) {
  .terminal-input-container { width: 50%; }
  .about-terminal { padding: 1rem; font-size: 0.95rem; }
  .about-label { font-size: 1rem; }
  .about-text { font-size: 0.95rem; }
  .nav-left, .nav-right { flex-direction: column; gap: 0.5rem; }
}

@media (max-width: 480px) {
  .terminal-input-container { width: 70%; }
  .about-terminal { padding: 0.8rem; font-size: 0.9rem; }
  .about-label { font-size: 0.95rem; }
  .about-text { font-size: 0.9rem; }
  .navbar { flex-direction: column; height: auto; padding: 1rem; }
  .nav-left, .nav-right { width: 100%; justify-content: space-between; }
}