/* ===== Root Theme Variables ===== */
:root {
  --bg-color: #ffffff;
  --text-color: #000000;
  --accent-color: #00bcd4;
  --secondary-bg: #f5f5f5;
  --shadow: rgba(0, 0, 0, 0.1);
}

[data-theme="dark"] {
  --bg-color: #121212;
  --text-color: #ffffff;
  --secondary-bg: #1e1e1e;
  --shadow: rgba(255, 255, 255, 0.1);
}

/* ===== Global Reset ===== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

/* ===== Base Body ===== */
body {
  font-family: "Arial", sans-serif;
  background-color: var(--bg-color);
  color: var(--text-color);
  line-height: 1.6;
  scroll-behavior: smooth;
}

/* ===== Header & Navigation ===== */
header {
  position: sticky;
  top: 0;
  background-color: var(--bg-color);
  box-shadow: 0 3px 10px rgba(0, 0, 0, 0.08);
  z-index: 100;
}

nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 2rem;
  position: relative;
}

nav .logo {
  font-size: 1.5rem;
  font-weight: bold;
  color: var(--accent-color);
}

nav ul {
  list-style: none;
  display: flex;
}

nav ul li {
  margin-left: 2rem;
}

nav ul li a {
  text-decoration: none;
  color: var(--text-color);
  transition: color 0.3s;
}

nav ul li a:hover {
  color: var(--accent-color);
}

/* ===== Hamburger Menu Button ===== */
.menu-toggle {
  font-size: 1.8rem;
  cursor: pointer;
  color: var(--text-color);
  background: transparent;
  border: none;
  outline: none;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 8px;
  transition: background 0.2s;
}

.menu-toggle:hover {
  background: rgba(0, 0, 0, 0.05);
}

/* Hide toggle on large screens */
@media (min-width: 700px) {
  .menu-toggle {
    display: none;
  }
}

/* ===== Mobile Navigation ===== */
.nav-links {
  display: flex;
  gap: 2rem;
}

@media (max-width: 768px) {
  .nav-links {
    position: absolute;
    top: 100%;
    right: 0;
    background-color: var(--bg-color);
    width: 200px;
    transform: translateX(100%);
    transition: transform 0.3s ease;
    border-left: 1px solid var(--shadow);
    box-shadow: -2px 5px 10px var(--shadow);
  }

  .nav-links.active {
    transform: translateX(0);
  }

  .nav-links ul {
    flex-direction: column;
    padding: 1rem;
    gap: 1rem;
  }

  nav ul {
    display: none;
  }

  .menu-toggle {
    display: block;
  }
}

/* ===== Theme Toggle ===== */
.theme-toggle {
  cursor: pointer;
  font-size: 1.5rem;
}

/* ===== Section Styling ===== */
section {
  padding: 4rem 2rem;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  animation: fadeIn 0.8s ease forwards;
}

.home {
  background-color: var(--secondary-bg);
}

/* ===== Avatar Styling ===== */
.avatar-container {
  display: flex;
  justify-content: center;
  align-items: center;
  margin-bottom: 1rem;
}

.home .avatar {
  width: 180px;
  height: 180px;
  border-radius: 50%;
  object-fit: cover;
  box-shadow: 0 4px 10px var(--shadow);
  border: 3px solid var(--accent-color);
}

/* ===== Fade-in Animation ===== */
.fade-in-photo {
  opacity: 0;
  transform: translateY(20px);
  animation: fadeInUp 1.2s ease forwards;
}

.home h1 {
  opacity: 0;
  animation: fadeInUp 1.2s ease forwards;
  animation-delay: 0.3s;
}

.home p {
  opacity: 0;
  animation: fadeInUp 1.2s ease forwards;
  animation-delay: 0.5s;
}

@keyframes fadeInUp {
  0% {
    opacity: 0;
    transform: translateY(20px);
  }

  100% {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ===== About Section ===== */
.top-header {
  text-align: center;
  margin-bottom: 2em;
}

.top-header h1 {
  font-size: 2.2em;
  color: var(--accent-color);
  margin-bottom: 0.3em;
}

.subtitle {
  color: gray;
  font-size: 1em;
}

.about-container {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: flex-start;
  gap: 40px;
  width: 100%;
  max-width: 1100px;
}

.about-info {
  flex: 1 1 350px;
  max-width: 450px;
  text-align: center;
  padding: 30px 25px;
}

.profile-pic {
  width: 120px;
  height: 120px;
  border-radius: 50%;
  object-fit: cover;
  margin-bottom: 20px;
  border: 3px solid var(--accent-color);
  box-shadow: 0 5px 15px var(--shadow);
}

.about-btn button {
  background: var(--accent-color);
  color: white;
  border: none;
  padding: 10px 20px;
  border-radius: 30px;
  cursor: pointer;
  margin-top: 20px;
  transition: background 0.3s ease, transform 0.3s ease;
}

.about-btn button:hover {
  background: #0097a7;
  transform: translateY(-3px);
}

/* ===== Skills Section ===== */
.skills-section {
  flex: 1 1 400px;
  display: flex;
  flex-direction: column;
  gap: 25px;
}

.skills-box {
  padding: 25px;
}

.skills-header h3 {
  font-size: 18px;
  color: var(--accent-color);
  margin-bottom: 15px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.skills-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
}

.skills-list span {
  background: var(--accent-color);
  color: white;
  padding: 6px 12px;
  border-radius: 20px;
  font-size: 14px;
  transition: 0.3s ease;
}

.skills-list span:hover {
  background: #0097a7;
  transform: scale(1.1);
}

/* ===== Glass Card Effect ===== */
.glass-card {
  background: rgba(255, 255, 255, 0.2);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.3);
  border-radius: 20px;
  box-shadow: 0 8px 20px var(--shadow);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.glass-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 12px 25px rgba(0, 0, 0, 0.15);
}

/* ===== Portfolio / Resume / Contact ===== */
.portfolio .projects {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 2rem;
  margin-top: 2rem;
}

.project {
  background-color: var(--secondary-bg);
  padding: 1rem;
  border-radius: 8px;
  box-shadow: 0 2px 5px var(--shadow);
  transition: transform 0.3s;
}

.project:hover {
  transform: translateY(-5px);
}

/* ===== Resume Timeline ===== */
.resume .timeline {
  position: relative;
  max-width: 600px;
  margin: 0 auto;
}

.timeline::before {
  content: "";
  position: absolute;
  left: 50%;
  width: 2px;
  height: 100%;
  background-color: var(--accent-color);
  transform: translateX(-50%);
}

.timeline-item {
  margin: 2rem 0;
  position: relative;
  width: 50%;
  padding: 1rem;
  background-color: var(--secondary-bg);
  border-radius: 8px;
  box-shadow: 0 2px 5px var(--shadow);
}

.timeline-item:nth-child(even) {
  left: 50%;
}

.timeline-item::before {
  content: "";
  position: absolute;
  top: 50%;
  width: 10px;
  height: 10px;
  background-color: var(--accent-color);
  border-radius: 50%;
  transform: translateY(-50%);
}

.timeline-item:nth-child(even)::before {
  left: -25px;
}

.timeline-item:nth-child(odd)::before {
  right: -25px;
}

/* ===== Contact Section ===== */
.contact form {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  max-width: 400px;
  margin: 0 auto;
}

.contact input,
.contact textarea {
  padding: 0.5rem;
  border: 1px solid var(--text-color);
  border-radius: 4px;
  background-color: var(--bg-color);
  color: var(--text-color);
}

.contact button {
  padding: 0.5rem;
  background-color: var(--accent-color);
  color: white;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  transition: background-color 0.3s;
}

.contact button:hover {
  background-color: #0097a7;
}

/* ===== Social Links ===== */
.social-links {
  margin-top: 2rem;
}

.social-links a {
  margin: 0 1rem;
  color: var(--accent-color);
  text-decoration: none;
  font-size: 1.5rem;
  transition: 0.3s;
}

.social-links a:hover {
  color: #0097a7;
  transform: scale(1.1);
}

/* ===== Back to Top Button ===== */
#back-to-top {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  background-color: var(--accent-color);
  color: white;
  border: none;
  border-radius: 50%;
  width: 50px;
  height: 50px;
  cursor: pointer;
  display: none;
  transition: opacity 0.3s;
}

#back-to-top.show {
  display: block;
}

/* ===== Mobile Layout Fixes ===== */
@media (max-width: 768px) {
  .portfolio .projects {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
  }

  .about-container {
    flex-direction: column;
    align-items: center;
  }

  .timeline::before {
    left: 20px;
  }

  .timeline-item {
    width: 90%;
    left: 5%;
  }

  .timeline-item:nth-child(even) {
    left: 20px;
  }

  .timeline-item::before,
  .timeline-item:nth-child(odd)::before {
    left: -15px;
  }
}