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

body {
  margin: 0;
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  /* use a subtle animated gradient for a modern feel */
  --bg-1: #fff7ed;
  /* warm pastel start */
  --bg-2: #fff1f0;
  /* warm pastel end */
  --accent: #ff6b6b;
  /* coral accent */
  --muted: #705a57;
  /* warm muted brown */
  --card: #ffffff;
  --glass: rgba(255, 255, 255, 0.6);

  color: #152711;
  background: linear-gradient(120deg, var(--bg-1), var(--bg-2));
  line-height: 1.6;
}

/* animated subtle movement on the background (prefers-reduced-motion respected) */
@media (prefers-reduced-motion: no-preference) {
  body::before {
    content: '';
    position: fixed;
    inset: -20%;
    background: radial-gradient(circle at 15% 20%, rgba(255, 107, 107, 0.06), transparent 8%),
      radial-gradient(circle at 80% 85%, rgba(255, 182, 93, 0.06), transparent 12%),
      radial-gradient(circle at 50% 40%, rgba(255, 229, 184, 0.04), transparent 22%);
    z-index: -1;
    animation: bgFloat 20s ease-in-out infinite;
    pointer-events: none;
  }

  @keyframes bgFloat {
    0% {
      transform: translate3d(0, 0, 0) scale(1)
    }

    50% {
      transform: translate3d(3%, -2%, 0) scale(1.02)
    }

    100% {
      transform: translate3d(0, 0, 0) scale(1)
    }
  }
}

/* tech-network SVG background */
#tech-bg {
  position: fixed;
  left: 0;
  top: 0;
  width: 100vw;
  height: 100vh;
  z-index: -2;
  pointer-events: none;
  mix-blend-mode: screen;
  opacity: 0.18;
}

#tech-bg .node {
  transform-origin: center;
}

@keyframes nodePulse {
  0% {
    transform: scale(1)
  }

  50% {
    transform: scale(1.35)
  }

  100% {
    transform: scale(1)
  }
}

@keyframes linksShift {
  0% {
    transform: translateY(0)
  }

  50% {
    transform: translateY(-6px)
  }

  100% {
    transform: translateY(0)
  }
}

@media (prefers-reduced-motion: no-preference) {
  #tech-bg .node:nth-child(1) {
    animation: nodePulse 6s ease-in-out infinite;
  }

  #tech-bg .node:nth-child(2) {
    animation: nodePulse 7s ease-in-out 0.8s infinite;
  }

  #tech-bg .node:nth-child(3) {
    animation: nodePulse 5.5s ease-in-out 0.4s infinite;
  }

  #tech-bg #links {
    animation: linksShift 18s ease-in-out infinite;
  }
}

@media (prefers-reduced-motion: reduce) {
  #tech-bg {
    opacity: 0.08
  }
}

a {
  color: #065fd4;
  text-decoration: none;
}

a:hover,
a:focus {
  text-decoration: underline;
}

/* Header */
header {
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.75), rgba(255, 255, 255, 0.5));
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  border-bottom: 1px solid rgba(15, 23, 42, 0.06);
  padding: 0.9rem 1.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 12px;
  margin: 0 1rem;
  border-radius: 12px;
  z-index: 30;
  box-shadow: 0 6px 20px rgba(2, 6, 23, 0.06);
}

header .logo {
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--accent);
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

header .logo h1 {
  font-size: 1.05rem;
  margin: 0
}

header .logo #typing {
  font-weight: 700
}

nav a {
  margin-left: 1.5rem;
  font-weight: 500;
  font-size: 0.95rem;
  color: var(--muted);
}

nav a:hover {
  color: var(--accent);
  transform: translateY(-2px);
  transition: transform 180ms ease, color 180ms ease;
}

/* Main container */
main {
  max-width: 960px;
  margin: 2rem auto 3rem auto;
  padding: 0 1rem;
}

/* Profile Summary Section */
.profile-summary {
  display: flex;
  align-items: center;
  gap: 2rem;
  flex-wrap: wrap;
  padding: 1.25rem;
  margin-top: 1.25rem;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.6), rgba(255, 255, 255, 0.45));
  border-radius: 14px;
  box-shadow: 0 6px 20px rgba(2, 6, 23, 0.04);
  border: 1px solid rgba(15, 23, 42, 0.04);
}

.profile-img {
  flex-shrink: 0;
  width: 160px;
  height: 160px;
  border-radius: 50%;
  overflow: hidden;
  box-shadow: 0 10px 30px rgba(2, 6, 23, 0.12);
  border: 4px solid rgba(255, 255, 255, 0.5);
}

.profile-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.profile-details {
  flex: 1 1 320px;
}

.profile-details h1 {
  margin-top: 0;
  margin-bottom: 0.2rem;
  font-weight: 700;
  font-size: 2rem;
  color: #ec1e1e;
}

.profile-details h2 {
  font-weight: 400;
  font-size: 1.1rem;
  color: #cca000;
  margin-top: 0;
  margin-bottom: 1rem;
}

.profile-details p {
  margin: 0.5rem 0;
  font-size: 1rem;
  color: #198970;
  max-width: 620px;
}

.divider {
  border-top: 1px solid #ccc;
  margin: 1rem 0;
}

/* Social links container */
.social-links {
  margin-top: 1rem;
  display: flex;
  gap: 20px;
}

.social-links a {
  font-size: 1.25rem;
  color: #374151;
  transition: color 240ms ease, transform 180ms ease;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.social-links a:hover {
  color: var(--accent);
  transform: translateY(-3px) scale(1.05);
}

/* Project Section */
section.projects {
  margin-top: 3rem;
}

section.projects h2 {
  font-size: 1.75rem;
  margin-bottom: 1rem;
  color: #ec1e1e;
  border-left: 5px solid #cca000;
  padding-left: 0.5rem;
}

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

.project-item {
  background: var(--card);
  border: 1px solid rgba(15, 23, 42, 0.04);
  border-radius: 12px;
  display: flex;
  gap: 1.25rem;
  padding: 1rem;
  margin-bottom: 1.25rem;
  align-items: center;
  transition: transform 220ms cubic-bezier(.2, .9, .2, 1), box-shadow 220ms ease;
  will-change: transform;
}

.project-item:hover {
  transform: translateY(-6px);
  box-shadow: 0 18px 40px rgba(2, 6, 23, 0.08);
}

.project-img {
  flex-shrink: 0;
  width: 110px;
  height: 100px;
  border-radius: 6px;
  overflow: hidden;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.project-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.project-content {
  flex: 1;
  display: flex;
  flex-direction: column;
}

.project-content h3 {
  margin: 0;
  font-size: 1.1rem;
  font-weight: 600;
  color: #065fd4;
}

.project-description {
  font-size: 0.9rem;
  margin-top: 0.25rem;
  color: #555;
  flex-grow: 1;
}

.project-tags {
  margin-top: 0.5rem;
}

.tag {
  display: inline-block;
  background-color: #e1e1e1;
  border-radius: 12px;
  padding: 3px 10px;
  font-size: 0.75rem;
  color: #444;
  margin-right: 6px;
  user-select: none;
}

/* colorful tag variants for better visual parsing */
.tag:nth-child(1) {
  background: linear-gradient(90deg, #e0f2fe, #bae6fd);
  color: #02467a
}

.tag:nth-child(2) {
  background: linear-gradient(90deg, #eef2ff, #e6e6ff);
  color: #2b3a67
}

.tag:nth-child(3) {
  background: linear-gradient(90deg, #fef3c7, #fde68a);
  color: #6a5100
}

.tag:nth-child(4) {
  background: linear-gradient(90deg, #ecfdf5, #bbf7d0);
  color: #0b6b3a
}

/* Deterministic tag colors (use classes in HTML) */
.tag--javascript {
  background: linear-gradient(90deg, #e0f2fe, #bae6fd);
  color: #02467a
}

.tag--node {
  background: linear-gradient(90deg, #e6fffa, #ccfbf1);
  color: #0b6b3a
}

.tag--json {
  background: linear-gradient(90deg, #fff7ed, #ffe4b5);
  color: #6a5100
}

.tag--github {
  background: linear-gradient(90deg, #f3f4f6, #e5e7eb);
  color: #111827
}

.tag--htmlcss {
  background: linear-gradient(90deg, #ffe4f0, #ffd6e8);
  color: #6b214f
}

.project-year {
  font-size: 0.85rem;
  color: #888;
  margin-left: 1rem;
  white-space: nowrap;
}

button.read-more-btn {
  align-self: flex-start;
  border: 1px solid #444;
  background: transparent;
  color: #444;
  border-radius: 4px;
  padding: 5px 12px;
  font-size: 0.9rem;
  cursor: pointer;
  margin-top: 0.5rem;
  transition: background-color 0.3s, color 0.3s;
}

button.read-more-btn:hover {
  background-color: #007acc;
  border-color: #007acc;
  color: #fff;
}

/* Experience Section */
section.experience {
  margin-top: 3rem;
}

section.experience h2 {
  font-size: 1.75rem;
  margin-bottom: 1rem;
  color: #ec1e1e;
  border-left: 5px solid #cca000;
  padding-left: 0.5rem;
}

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

.experience-item {
  background: #fff;
  border: 1px solid #ddd;
  border-radius: 6px;
  padding: 1rem 1.25rem;
  margin-bottom: 1rem;
}

.experience-item h3 {
  margin: 0;
  font-size: 1.1rem;
  font-weight: 600;
  color: #222;
}

.experience-role {
  font-style: italic;
  font-size: 0.9rem;
  color: #555;
  margin-top: 0.15rem;
}

.experience-duration {
  font-size: 0.85rem;
  color: #777;
  margin-top: 0.2rem;
}

.experience-description {
  margin-top: 0.6rem;
  font-size: 0.95rem;
  color: #444;
}

/* Skills Section */
section.skills {
  margin-top: 3rem;
}

section.skills h2 {
  font-size: 1.75rem;
  margin-bottom: 1rem;
  color: #ec1e1e;
  border-left: 5px solid #cca000;
  padding-left: 0.5rem;
}

.skills-list {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.skill-badge {
  /* background: #007acc; */
  color: rgb(0, 0, 0);
  padding: 6px 10px;
  border-radius: 18px;
  font-size: 20px;
  user-select: none;
}

/* Resume Section */
section.resume {
  margin-top: 3rem;
  text-align: center;
}

section.resume h2 {
  font-size: 1.75rem;
  margin-bottom: 1rem;
  color: #ec1e1e;
  border-left: 5px solid #cca000;
  padding-left: 0.5rem;
  text-align: left;
  max-width: 960px;
  margin-left: auto;
  margin-right: auto;
}

.resume-link {
  display: inline-block;
  background: linear-gradient(90deg, var(--accent), #055aab);
  color: white;
  text-decoration: none;
  padding: 10px 20px;
  border-radius: 6px;
  font-weight: 600;
  box-shadow: 0 4px 6px rgba(216, 3, 3, 0.867);
  transition: background-color 0.3s;
}

.resume-link:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 30px rgba(2, 6, 23, 0.12);
}

/* Contact Section */
section.contact {
  margin-top: 3rem;
  margin-bottom: 3rem;
}

section.contact h2 {
  font-size: 1.75rem;
  margin-bottom: 1rem;
  color: #ec1e1e;
  border-left: 5px solid #cca000;
  padding-left: 0.5rem;
  max-width: 960px;
  margin-left: auto;
  margin-right: auto;
  text-align: left;
}

form.contact-form {
  background: white;
  max-width: 600px;
  padding: 1.5rem 2rem 2rem 2rem;
  margin: 0 auto;
  box-shadow: 0 10px 30px rgba(2, 6, 23, 0.06);
  border-radius: 12px;
}

.form-group {
  margin-bottom: 1.25rem;
  text-align: left;
}

label {
  display: block;
  font-weight: 600;
  color: #cca000;
  margin-bottom: 0.3rem;
  font-size: 0.95rem;
}

input[type="text"],
input[type="email"],
textarea {
  width: 100%;
  border: 1px solid #ccc;
  border-radius: 6px;
  padding: 10px 12px;
  font-size: 1rem;
  font-family: inherit;
  transition: border-color 0.3s;
}

input[type="text"]:focus,
input[type="email"]:focus,
textarea:focus {
  border-color: #007acc;
  outline: none;
}

textarea {
  resize: vertical;
  min-height: 90px;
}

button[type="submit"] {
  background: linear-gradient(90deg, var(--accent), #055aab);
  color: white;
  font-size: 1rem;
  font-weight: 600;
  border: none;
  border-radius: 6px;
  padding: 10px 18px;
  cursor: pointer;
  transition: background-color 0.3s;
}

button[type="submit"]:hover,
button[type="submit"]:focus {
  transform: translateY(-3px);
  box-shadow: 0 10px 26px rgba(2, 6, 23, 0.08);
}

/* skill badge subtle animations */
.skill-badge {
  background: linear-gradient(90deg, rgba(0, 122, 204, 0.06), rgba(0, 122, 204, 0.02));
  border: 1px solid rgba(2, 6, 23, 0.04);
  padding: 6px 12px;
  font-size: 0.95rem;
  color: #0f172a;
  transition: transform 180ms ease, box-shadow 180ms ease;
}

.skill-badge:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 24px rgba(2, 6, 23, 0.06)
}

/* dark mode support */
@media (prefers-color-scheme: dark) {
  :root {
    color-scheme: dark;
  }

  body {
    background: linear-gradient(120deg, #071124, #081226);
    color: #e6eef6
  }

  header {
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.02), rgba(255, 255, 255, 0.01));
    border: 1px solid rgba(255, 255, 255, 0.04)
  }

  .profile-summary,
  .project-item,
  form.contact-form {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.04)
  }

  .tag {
    opacity: 0.95
  }

  .skill-badge {
    background: rgba(255, 255, 255, 0.02);
    color: #e6eef6
  }

  a {
    color: #93c5fd
  }

  /* Make headings white in dark mode */
  .profile-details h1,
  section.skills h2,
  section.projects h2,
  section.experience h2,
  section.resume h2,
  section.contact h2 {
    color: #ffffff;
  }

  /* Make project title headings consistent with link color */
  .project-content h3 {
    color: #93c5fd;
  }
}

/* Manual theme class override (used by JS toggle) */
.theme-dark {
  --bg-1: #071124;
  --bg-2: #081226;
  --accent: #7dd3fc;
  --muted: #fda893;
  color-scheme: dark;
}

/* apply dark visuals when .theme-dark is present on documentElement/html */
.theme-dark body {
  background: linear-gradient(120deg, #071124, #081226);
  color: #e6eef6
}

.theme-dark header {
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.02), rgba(255, 255, 255, 0.01));
  border: 1px solid rgba(255, 255, 255, 0.04)
}

.theme-dark .profile-summary,
.theme-dark .project-item,
.theme-dark form.contact-form {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.04)
}

.theme-dark .tag {
  opacity: 0.95
}

.theme-dark .skill-badge {
  background: rgba(255, 255, 255, 0.02);
  color: #e6eef6
}

.theme-dark a {
  color: #93c5fd
}

.theme-dark body::before {
  opacity: 0.9
}

/* Make headings white in dark mode */
.theme-dark .profile-details h1,
.theme-dark section.skills h2,
.theme-dark section.projects h2,
.theme-dark section.experience h2,
.theme-dark section.resume h2,
.theme-dark section.contact h2 {
  color: #ffffff;
}

/* Make project title headings consistent with link color */
.theme-dark .project-content h3 {
  color: #93c5fd;
}

/* reveal animation */
.reveal {
  opacity: 0;
  transform: translateY(10px) scale(0.995);
  transition: opacity 520ms cubic-bezier(.2, .8, .2, 1), transform 520ms cubic-bezier(.2, .8, .2, 1);
  will-change: opacity, transform
}

.reveal.revealed {
  opacity: 1;
  transform: translateY(0) scale(1)
}

/* theme toggle button */
.theme-toggle {
  appearance: none;
  border: none;
  background: transparent;
  cursor: pointer;
  font-size: 1.05rem;
  padding: 6px 8px;
  border-radius: 8px;
  transition: transform 180ms ease, background 180ms ease;
}

.theme-toggle:hover {
  transform: translateY(-3px);
  background: rgba(2, 6, 23, 0.04)
}

/* Responsive tweaks */
@media (max-width: 640px) {
  .profile-summary {
    justify-content: center;
    text-align: center;
  }

  .profile-details {
    flex-basis: 100%;
  }

  nav a {
    margin-left: 1rem;
    font-size: 0.9rem;
  }

  .project-item {
    flex-wrap: wrap;
    justify-content: center;
    text-align: center;
  }

  .project-content {
    flex-basis: 100%;
  }

  .project-year {
    margin-left: 0;
    margin-top: 0.6rem;
  }
}