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

/* Fonts & basics */
body, html {
  height: 100%;
  font-family: 'Roboto', sans-serif;
  background: var(--bg-color);
  color: var(--text-color);
  overflow-x: hidden;
  overflow-y: scroll;
  scrollbar-width: none; /* Firefox */
  scroll-behavior: smooth;
  transition: background-color 0.4s ease, color 0.4s ease;
}

body::-webkit-scrollbar {
  display: none; /* Chrome, Safari, Edge */
}

/* Theme variables */
/* Add this to your theme variables */

body.dark-theme {
  --bg-color: #0f172a;
  --text-color: #e2e8f0;
  --panel-bg: #111827;
  --accent-color: #22d3ee;
  --text-muted: #94a3b8;
  --box-shadow-color: rgba(34, 211, 238, 0.4);
  --project-highlight-color: #a5f3fc;
}

body.light-theme {
  --bg-color: #e6ebf1;
  --text-color: #1e293b;
  --panel-bg: #e2e8f0;
  --accent-color: #0ea5e9;
  --text-muted: #64748b;
  --box-shadow-color: rgba(14, 165, 233, 0.3);
  --project-highlight-color: #0ea5e9;
}

/* Update your project-highlight class to use the variable */

.project-highlight {
  font-style: italic;
  color: var(--project-highlight-color);
}

/* Theme toggle button */
.theme-toggle-btn {
  position: fixed;
  top: 20px;
  left: 20px;
  background: var(--accent-color);
  border: none;
  color: var(--bg-color);
  font-size: 1.4rem;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  cursor: pointer;
  box-shadow: 0 4px 8px var(--box-shadow-color);
  z-index: 1100;
  transition: background-color 0.3s ease, color 0.3s ease;
}

.theme-toggle-btn:hover,
.theme-toggle-btn:focus {
  background: var(--accent-color);
  opacity: 0.8;
  outline: none;
}

/* Download Resume button */
.download-resume-btn {
  position: fixed;
  top: 20px;
  right: 20px;
  background: var(--accent-color);
  color: var(--bg-color);
  width: 48px;          /* fixed size for circle */
  height: 48px;
  border-radius: 50%;   /* fully rounded */
  box-shadow: 0 4px 8px var(--box-shadow-color);
  display: flex;        /* center SVG */
  justify-content: center;
  align-items: center;
  text-decoration: none;
  font-size: 1.6rem;    /* size for SVG icon */
  transition: background-color 0.3s ease, color 0.3s ease, box-shadow 0.3s ease;
  z-index: 1000;
  user-select: none;
}

.download-resume-btn:hover,
.download-resume-btn:focus {
  background: var(--accent-color);
  color: white;
  box-shadow: 0 6px 12px var(--box-shadow-color);
  outline: none;
  cursor: pointer;
}

/* Responsive adjustment */
@media (max-width: 600px) {
  .download-resume-btn {
    top: 12px;
    right: 12px;
    width: 40px;
    height: 40px;
    font-size: 1.3rem;
  }
  .theme-toggle-btn {
    top: 12px;
    left: 12px;
    width: 36px;
    height: 36px;
    font-size: 1.2rem;
  }
}

/* Container & panels */
.container {
  display: flex;
  min-height: 100vh;
  max-width: 1200px;
  margin: 80px auto 40px;
  background: var(--panel-bg);
  border-radius: 12px;
  box-shadow: 0 0 15px var(--box-shadow-color);
  overflow: hidden;
}

.left-panel {
  width: 300px;
  background: var(--panel-bg);
  padding: 20px 18px;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  border-right: 2px solid var(--accent-color);
}

.left-panel img.profile-image {
  width: 130px;
  height: 130px;
  border-radius: 50%;
  object-fit: cover;
  border: 3px solid var(--accent-color);
  margin: 0 auto 10px auto;
  display: block;
  transition: transform 0.3s ease;
}

.left-panel img.profile-image:hover {
  transform: scale(1.05);
}

.left-panel h1 {
  font-weight: 700;
  font-size: 1.6rem;
  text-align: center;
  color: var(--accent-color);
  margin-bottom: 0.3rem;
}

.left-panel p.title {
  font-weight: 500;
  text-align: center;
  font-size: 0.95rem;
  color: var(--text-muted);
  margin-bottom: 0.6rem;
}

.left-panel h2 {
  color: var(--accent-color);
  font-weight: 700;
  font-size: 1rem;
  border-bottom: 1px solid #334155;
  padding-bottom: 4px;
  margin-bottom: 8px;
}

.left-panel ul {
  list-style: none;
  padding-left: 0;
}

.left-panel li {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 6px;
  font-size: 0.9rem;
  color: var(--text-muted);
  transition: color 0.3s ease;
}

.left-panel li:hover {
  color: var(--accent-color);
}

.left-panel li i {
  color: var(--accent-color);
  min-width: 18px;
  font-size: 1rem;
  text-align: center;
}

/* Right panel */
.right-panel {
  flex-grow: 1;
  padding: 40px 50px;
  overflow-y: auto;
}

.section {
  margin-bottom: 2.5rem;
}

.section h2 {
  color: var(--accent-color);
  font-weight: 700;
  font-size: 1.4rem;
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 12px;
}

.section h2 i {
  color: #0ea5e9;
  font-size: 1.5rem;
}

p, li {
  font-size: 1rem;
  line-height: 1.5;
  color: var(--text-muted);
}

/* Lists */
ul.experience-list, ul.education-list, ul.projects-list, ul.skills-list, ul.certifications-list {
  list-style: none;
  padding-left: 0;
}

ul.experience-list li, ul.education-list li, ul.projects-list li, ul.skills-list li, ul.certifications-list li {
  margin-bottom: 1rem;
}

ul.experience-list li strong {
  color: #60a5fa;
  font-weight: 600;
}

span.date {
  color: var(--text-muted);
  font-style: italic;
  font-size: 0.9rem;
  display: block;
  margin-top: 3px;
}

/* Scrollbar */
.right-panel::-webkit-scrollbar {
  width: 8px;
}

.right-panel::-webkit-scrollbar-thumb {
  background: var(--accent-color);
  border-radius: 4px;
}

.right-panel::-webkit-scrollbar-track {
  background: transparent;
}

/* Responsive layout */
@media (max-width: 900px) {
  .container {
    flex-direction: column;
    max-width: 100%;
    border-radius: 0;
  }
  .left-panel {
    width: 100%;
    border-right: none;
    border-bottom: 2px solid var(--accent-color);
    padding: 18px;
    text-align: center;
  }
  .right-panel {
    padding: 20px 25px;
    max-height: 60vh;
  }
}

/* Backgrounds */
body::before {
  content: "";
  position: fixed;
  top: 0; left: 0;
  width: 100vw;
  height: 100vh;
  background: linear-gradient(135deg, var(--bg-color) 0%, #1e293b 100%);
  z-index: -2;
  pointer-events: none;
}

.low-poly-bg {
  position: fixed;
  top: 0; left: 0;
  width: 100vw;
  height: 100vh;
  z-index: -1;
  pointer-events: none;
  background:
    linear-gradient(120deg, var(--accent-color)33 25%, transparent 25%) -50px 0,
    linear-gradient(60deg, var(--accent-color)33 25%, transparent 25%) -50px 0,
    linear-gradient(120deg, var(--accent-color)33 25%, transparent 25%),
    linear-gradient(60deg, var(--accent-color)33 25%, transparent 25%);
  background-size: 100px 173.2px;
  background-repeat: repeat;
  animation: moveBg 40s linear infinite;
  opacity: 0.2;
}

@keyframes moveBg {
  0% { background-position: 0 0, 0 0, 50px 86.6px, 50px 86.6px; }
  100% { background-position: 100px 0, 100px 0, 150px 86.6px, 150px 86.6px; }
}

/* Links */
a {
  color: var(--accent-color);
  text-decoration: none;
  transition: color 0.3s ease;
}
a:hover {
  text-decoration: underline;
}

/* Footer */
.footer {
  width: 100%;
  padding: 15px 0;
  background: var(--panel-bg);
  color: var(--text-muted);
  text-align: center;
  font-size: 0.9rem;
  border-top: 1px solid var(--accent-color);
  margin-top: auto;
  font-family: 'Roboto', sans-serif;
}

/* Fireflies Effect */
.fireflies-container {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
}

.firefly {
  position: absolute;
  border-radius: 50%;
  background: radial-gradient(circle, #ffffcc 0%, #ffff99 60%, transparent 70%);
  box-shadow: 0 0 12px 4px rgba(255, 255, 153, 0.6);
  opacity: 0.7;
  will-change: transform, opacity;
  animation: flicker 3s ease-in-out infinite;
}

@keyframes flicker {
  0%, 100% { opacity: 0.7; }
  50% { opacity: 0.4; }
}