/* CSS Variables */
:root {
  --bg: #121212;
  --text: #f0f0f0;
  --section-bg-1: #1e1e1e;
  --section-bg-2: #2a2a2a;
  --header-bg: rgba(18, 18, 18, 0.9);
  --link: #00ffff;
  --link-hover: #1a1a2e;
  --highlight: #00aaff;
  --card-bg: rgba(30, 30, 30, 0.85);
  --card-border: rgba(255, 255, 255, 0.05);
  --timeline-line: linear-gradient(to bottom, #00ffff, #8f00ff);
  --timeline-dot: #00ffff;
  --tag-bg: linear-gradient(to right, #0072ff, #00c6ff);
  --btn-bg: #00030c;
  --btn-hover: #1a1a2e;
  --shadow: rgba(0, 0, 0, 0.3);
  --white: #ffffff;
  --gray: #cccccc;
}

/* Light Theme Overrides */
[data-theme="light"] {
  --bg: #f9f9f9;
  --text: #111111;
  --section-bg-1: #ffffff;
  --section-bg-2: #eeeeee;
  --header-bg: rgba(255, 255, 255, 0.95);
  --link: #0072ff;
  --link-hover: #004477;
  --highlight: #0072ff;
  --card-bg: rgba(255, 255, 255, 0.85);
  --card-border: rgba(0, 0, 0, 0.05);
  --timeline-line: linear-gradient(to bottom, #0072ff, #00c6ff);
  --timeline-dot: #0072ff;
  --tag-bg: linear-gradient(to right, #0072ff, #00c6ff);
  --btn-bg: #e0e0e0;
  --btn-hover: #cccccc;
  --shadow: rgba(0, 0, 0, 0.15);
  --white: #000000;
  --gray: #333333;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

/* General Styles */
body {
  margin: 0;
  padding: 0;
  font-family: 'Poppins', sans-serif;
  background: var(--bg);
  color: var(--text);
}

/* Header */
header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 40px;
  z-index: 100;
  background: var(--header-bg);
}
header .logo {
  font-size: 1.2em;
}
header .logo .name {
  color: var(--highlight);
  font-weight: 600;
}
header .logo .title {
  color: var(--white);
  font-weight: 300;
}
header nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap; /* ✨ NEW: Allow wrapping */
  gap: 12px;        /* ✨ Optional: Consistent spacing */
}

header nav ul li {
  margin-left: 20px;
}
header nav ul li a {
  color: var(--text);
  text-decoration: none;
  transition: color 0.3s;
}
header nav ul li a.active,
header nav ul li a:hover {
  color: var(--link);
}

/*light dark theme */
#theme-toggle {
  font-size: 1.2rem;
  color: var(--text);
  background: none;
  border: 2px solid var(--text);
  border-radius: 20px;
  padding: 6px 12px;
  margin-left: 20px;
  cursor: pointer;
  flex-shrink: 0; /* ✨ NEW: Don't allow shrinking on tight layouts */
}

#theme-toggle:hover {
  transform: scale(1.2);
}

.nav-container {
  display: flex;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap; /* Allows wrapping on small screens */
  max-width: 100%;
  overflow: hidden;
}

@media (max-width: 600px) {
  header {
    padding: 10px 20px;
  }

  .nav-container {
    justify-content: flex-end;
    gap: 12px;
  }

  #theme-toggle {
    padding: 4px 10px;
    font-size: 1rem;
  }
}
/* Toggle Switch Styles */
.toggle-switch {
  position: relative;
  width: 50px;
  height: 26px;
  margin-left: 20px;
}

.toggle-switch input {
  opacity: 0;
  width: 0;
  height: 0;
}

.toggle-switch label {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--gray);
  border-radius: 34px;
  cursor: pointer;
  transition: background 0.3s ease;
}

.toggle-switch label::before {
  content: "";
  position: absolute;
  height: 20px;
  width: 20px;
  left: 3px;
  bottom: 3px;
  background-color: var(--bg);
  border-radius: 50%;
  transition: transform 0.3s ease;
  box-shadow: 0 2px 4px rgba(0,0,0,0.3);
}

.toggle-switch input:checked + label {
  background: var(--highlight);
}

.toggle-switch input:checked + label::before {
  transform: translateX(24px);
}

@media (max-width: 600px) {
  .toggle-switch {
    width: 42px;
    height: 20px;
  }

  .toggle-switch label::after {
    width: 14px;
    height: 14px;
    top: 3px;
    left: 3px;
  }

  .toggle-switch input:checked + label::after {
    transform: translateX(20px);
  }
}

/* Sections */
.section {
  min-height: 100vh;
  padding: 60px 20px 40px;
  display: block;
  position: relative;
  text-align: center;
}

.introduction {
  position: relative;
}
.section-content {
  z-index: 2;
  position: relative;
}
.about {
  background: var(--section-bg-1);
}
.work {
  background: var(--section-bg-2);
}
.projects {
  background: var(--section-bg-1);
}
.contact {
  background: var(--section-bg-2);
}

/* Large Header for Introduction */
.large-header {
  position: relative;
  width: 100%;
  height: 100vh;
  overflow: hidden;
  z-index: 0;
}
.large-header canvas {
  position: absolute;
  top: 0;
  left: 0;
}
.intro-text {
  position: absolute;
  top: 50%;
  left: 10%;
  transform: translateY(-50%);
  z-index: 1;
  text-align: left;
}
.intro-text h1 {
  font-size: 3em;
  margin: 0 0 20px;
}
.intro-text p {
  font-size: 1.2em;
  max-width: 600px;
}

.highlight-name {
  color: var(--highlight);
}

@media (max-width: 600px) {
  .intro-text {
    left: 5%;
    font-size: 1em;
  }
}

/* About Section Content */
.about-content {
  text-align: left;
  max-width: 1200px;
  margin: 0 auto;
  padding: 40px;
}

.background-title {
  font-size: 2.5em;
  color: var(--white);
  font-weight: bold;
  margin-bottom: 20px;
}

.background-description {
  font-size: 1em;
  color: var(--gray);
  line-height: 1.6;
  margin-bottom: 40px;
}

/* Skill Cards Container */
.skills-cards {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  justify-content: center;
}

/* Skill Card Outer Border */
.card {
  width: 100%;
    max-width: 300px;
  padding: 3px;
  border-radius: 30px;
  background: linear-gradient(45deg, #ff0000, #C0C0C0, #0000ff, #4b0082, #8f00ff);
  background-size: 300% 300%;
  animation: gradientShift 15s ease infinite;
  transition: transform 0.5s cubic-bezier(0.25, 1, 0.5, 1), box-shadow 0.5s ease;
  will-change: transform, box-shadow;
}

.card:hover {
  transform: scale(1.07);
  box-shadow: 0 12px 24px rgba(0, 0, 0, 0.35), 0 0 20px rgba(255, 255, 255, 0.1);
}

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

/* Inner Card */
.card-inner {
  border-radius: 27px;
  padding: 20px;
  min-height: 280px;
  text-align: center;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  background: var(--card-bg);
  backdrop-filter: blur(8px);
  border: 1px solid var(--card-border);
  position: relative;
}

/* Text visible on load */
.card-front-text {
  text-align: center;
  transition: opacity 0.3s ease, visibility 0.3s ease;
}

/* Text shown on hover */
.card-hover-text {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 90%;
  transform: translate(-50%, -50%);
  opacity: 0;
  transition: opacity 0.3s ease;
  color: var(--gray);
  font-size: 1em;
  line-height: 1.4;
}

/* Hover Interactions */
.tilt-card:hover .card-front-text {
  opacity: 0;
  visibility: hidden;
}

.tilt-card:hover .card-hover-text {
  opacity: 1;
}

.tilt-card {
  transition: transform 0.3s ease;
  will-change: transform;
  perspective: 1000px;
}

/* Headings */
.card-inner h3,
.card-front-text h3 {
  color: var(--white);
  font-size: 1.2em;
  margin: 0;
  text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.3);
}

/* Work Section */
.work-content {
  max-width: 1200px;
  margin: 0 auto;
  padding: 40px;
  text-align: center;
}

.work-content .section-title {
  font-size: 2.5em;
  margin-bottom: 20px;
  color: var(--white);
  text-align: left;
}

.work-subtitle {
  font-size: 1.1em;
  color: var(--gray);
  text-align: left;
  margin-bottom: 30px;
}

/* Timeline */
.timeline {
  position: relative;
  margin: 60px auto;
  padding: 40px 0;
  width: 100%;
  max-width: 900px;
}

.timeline::before {
  content: '';
  position: absolute;
  top: 0;
  bottom: 0;
  left: 50%;
  width: 4px;
  background: var(--timeline-line);
  transform: translateX(-50%);
  z-index: 1;
}

.timeline-item {
  position: relative;
  width: 50%;
  padding: 20px 40px;
  box-sizing: border-box;
  opacity: 0;
  transform: translateY(20px);
  transition: all 0.6s ease-out;
}

.job-title {
  color: var(--highlight);
  font-weight: 600;
}

.job-years {
  color: var(--gray);
  font-weight: 400;
  margin-left: 8px;
  font-size: 0.95em;
}


.timeline-item.visible {
  opacity: 1;
  transform: translateY(0);
}

.timeline-item:nth-child(odd) {
  left: 0;
  text-align: left;
}

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

/* Timeline Content Box */
.timeline-content {
  position: relative;
  background: var(--card-bg);
  backdrop-filter: blur(10px);
  padding: 20px 30px;
  border-radius: 16px;
  box-shadow: 0 4px 12px var(--shadow);
  z-index: 2;
}

.timeline-content h3 {
  margin-top: 0;
  margin-bottom: 0;
  font-size: 1.3rem;
  color: var(--link); /* Neon/cyan by default */
}

.timeline-content h4 {
  margin: 6px 0 4px;
  font-size: 1rem;
  color: var(--gray);
  font-weight: 500;
}

.timeline-content h5 {
  margin: 0 0 12px;
  font-size: 0.85rem;
  color: var(--gray);
  font-weight: 400;
  font-style: italic;
}

.timeline-content p {
  color: var(--gray);
  font-size: 0.95rem;
}

/* Timeline Dot */
.timeline-item::after {
  content: "";
  position: absolute;
  top: 20px;
  width: 20px;
  height: 20px;
  background: var(--timeline-dot);
  border: 4px solid var(--section-bg-1);
  border-radius: 50%;
  z-index: 3;
}

.timeline-item:nth-child(odd)::after {
  right: -10px;
}

.timeline-item:nth-child(even)::after {
  left: -10px;
}

/* Tag Chips */
.tags span {
  background: var(--tag-bg);
  color: var(--white);
  padding: 4px 10px;
  border-radius: 12px;
  font-size: 0.75rem;
  margin-right: 6px;
  display: inline-block;
  margin-top: 10px;
}

/* Responsive Timeline */
@media (max-width: 768px) {
  .timeline::before {
    left: 20px;
    transform: none;
  }

  .timeline-item,
  .timeline-item:nth-child(odd),
  .timeline-item:nth-child(even) {
    width: 100%;
    padding-left: 50px;
    text-align: left;
    left: 0 !important;
  }

  .timeline-item::after {
    left: 20px !important;
    right: auto !important;
  }
}


/* Projects Section */
.projects .section-content {
  max-width: 1200px;
  margin: 0 auto;
  padding: 40px;
  text-align: left;
}

.projects .section-title {
  font-size: 2.5em;
  color: var(--white);
  font-weight: bold;
  margin-bottom: 20px;
  text-align: left;
}

.projects-subtitle {
  font-size: 1.2em;
  color: var(--gray);
  margin-bottom: 20px;
  text-align: left;
}

/* Optional project showcase strip */
.projects-showcase {
  display: flex;
  justify-content: center;
  align-items: center;
  margin-bottom: 40px;
}

.projects-showcase img {
  max-width: 80%;
  height: auto;
  border-radius: 10px;
  box-shadow: 0 4px 10px var(--shadow);
}

/* Tag Filter Navigation */
.project-tags {
  text-align: center;
  margin-bottom: 20px;
}

.project-tags .tag-btn {
  margin: 0 8px;
  padding: 8px 16px;
  border: none;
  background: var(--btn-bg);
  color: var(--text);
  cursor: pointer;
  border-radius: 4px;
  transition: background 0.3s ease;
}

.project-tags .tag-btn:hover,
.project-tags .tag-btn.active {
  background: var(--btn-hover);
}

/* Projects List */
.projects-list {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  justify-content: center;
}

.project-card {
  background: var(--card-bg);
  backdrop-filter: blur(10px);
  border: 1px solid var(--card-border);
  padding: 20px;
  border-radius: 16px;
  box-shadow: 0 4px 15px var(--shadow);
  transition: transform 0.4s ease, box-shadow 0.4s ease;
  width: 300px;
  text-align: left;
  opacity: 0;
  transform: translateY(20px);
}

.project-card.visible {
  opacity: 1;
  transform: translateY(0);
}

.project-card:hover {
  transform: translateY(-8px) scale(1.02);
  box-shadow: 0 12px 24px rgba(0, 255, 255, 0.15); /* subtle neon glow */
}

/* Project Thumbnail */
.project-image img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  border-radius: 12px;
  margin-bottom: 10px;
  box-shadow: 0 2px 10px var(--shadow);
}

/* Project Tags */
.project-tags-display {
  margin: 10px 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.project-tag {
  background: var(--tag-bg);
  color: var(--white);
  font-weight: 500;
  padding: 4px 10px;
  border-radius: 16px;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  white-space: nowrap; /* Keeps tag content in a single line */
}

/* Responsive Adjustments */
@media (max-width: 768px) {
  .projects-list {
    flex-direction: column;
    align-items: center;
  }

  .project-card {
    width: 90%;
  }
}




/* Contact Section - Container */
.contact-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  max-width: 1000px;
  margin: 0 auto;
  padding: 40px;
}

/* Left Side: Contact Info */
.contact-left {
  flex: 1;
  padding: 30px;
  border-radius: 16px;
  background: var(--card-bg);
  backdrop-filter: blur(10px);
  box-shadow: 0 4px 15px var(--shadow);
}

.contact-left .section-title {
  font-size: 2.5em;
  color: var(--white);
  font-weight: bold;
  margin-bottom: 20px;
  text-align: left;
}

.contact-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.contact-list li {
  display: flex;
  align-items: center;
  margin-bottom: 15px;
  font-size: 1.1em;
  color: var(--gray);
}

.contact-list li img {
  width: 24px;
  height: 24px;
  margin-right: 10px;
}

.contact-list li a {
  color: var(--link);
  text-decoration: none;
  transition: color 0.3s, text-shadow 0.3s;
}

.contact-list li a:hover {
  color: var(--link);
  text-shadow: 0 0 6px var(--link);
}

.contact-list li:not(:last-child) {
  border-bottom: 1px solid var(--card-border);
  padding-bottom: 10px;
}

/* Reusable Button Style */
.btn {
  display: inline-block;
  padding: 10px 20px;
  background: var(--btn-bg);
  color: var(--text);
  text-decoration: none;
  border-radius: 4px;
  transition: background 0.3s ease;
}

.btn:hover {
  background: var(--btn-hover);
}

/* Right Side: Canvas Animation */
.contact-right {
  flex: 1;
  position: relative;
  height: 300px;
}

#contact-canvas {
  width: 100%;
  height: 100%;
  background: var(--bg);
  display: block;
}

@media (max-width: 768px) {
  .contact-content {
    flex-direction: column;
    padding: 20px;
  }

  .contact-left {
    margin-bottom: 30px;
    width: 100%;
  }

  .contact-right {
    width: 100%;
    height: 200px; /* smaller height for mobile */
  }

  #contact-canvas {
    width: 100%;
    height: 100%;
  }
}

/* Scroll Animation for Sections */
.section {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s cubic-bezier(0.25, 1, 0.5, 1), transform 0.6s cubic-bezier(0.25, 1, 0.5, 1);
}

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

.section.visible .section-content > * {
  opacity: 0;
  transform: translateY(20px);
  animation: fadeInUp 0.6s ease forwards;
}

.section.visible .section-content > *:nth-child(1) {
  animation-delay: 0.1s;
}

.section.visible .section-content > *:nth-child(2) {
  animation-delay: 0.2s;
}

.section.visible .section-content > *:nth-child(3) {
  animation-delay: 0.3s;
}

@keyframes fadeInUp {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* TEMP FIX: Show all sections for debugging on mobile */
@media (max-width: 768px) {
  .section {
    opacity: 1 !important;
    transform: none !important;
  }

  .project-card,
  .timeline-item {
    opacity: 1 !important;
    transform: none !important;
  }
}