:root {
  --clr-primary-muted: #4a7c74;
  --clr-primary-blue: #2b7aef;
  --clr-bg-dark: #121212;
  --clr-bg-light-dark: #1c1c1c;
  --clr-text-light: #f3f3f3;
  --clr-border-light: #555;
  --radius-md: 6px;
  --radius-lg: 10px;
  --transition-ease: all 0.25s ease-in-out;
  --space-lg: 1.75rem;
  --space-md: 1rem;
  --space-xl: 2.25rem;
  --fs-base: 1.08rem;
  --fs-heading-2: 2.2rem;
  --fs-heading-3: 1.5rem;
  --shadow-card: 0 4px 20px rgba(43,122,239,0.05);
}

html {
  scroll-behavior: smooth;
  background: var(--clr-bg-dark);
}
body {
  font-family: 'Inter', 'Montserrat', 'Roboto', Arial, sans-serif;
  background: var(--clr-bg-dark);
  color: var(--clr-text-light);
  max-width: 1200px;
  margin: 0 auto;
  padding: var(--space-lg);
  font-size: var(--fs-base);
  line-height: 1.6;
}

/* Header */
.site-header, .site-footer {
  background-color: var(--clr-bg-light-dark);
  color: var(--clr-primary-muted);
  padding: var(--space-lg);
  text-align: center;
  border-bottom: 1px solid var(--clr-border-light);
}
.site-footer {
  margin-top: var(--space-xl);
  border-top: 1px solid var(--clr-border-light);
  border-bottom: none;
}
.header-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-md);
  max-width: 900px;
  margin: 0 auto;
}
.main-nav-list {
  list-style: none;
  display: flex;
  justify-content: center;
  gap: var(--space-lg);
  padding: 0;
}
.main-nav-list li a {
  color: var(--clr-text-light);
  font-weight: 600;
  border-bottom: 2px solid transparent;
  transition: var(--transition-ease);
  padding: 0.25rem 0.5rem;
  font-size: var(--fs-base);
  text-decoration: none;
}
.main-nav-list li a:hover,
.main-nav-list li a:focus {
  color: var(--clr-primary-muted);
  border-bottom: 2px solid var(--clr-primary-muted);
}

/* Social Icons */
.social-icons {
  display: flex;
  gap: 1rem;
  margin-top: 0.5rem;
}
.social-icons a img {
  width: 32px;
  height: 32px;
  filter: grayscale(1) brightness(1.18);
  transition: filter 0.2s, transform 0.2s;
}
.social-icons a:hover img, .social-icons a:focus img {
  filter: none;
  transform: scale(1.18) rotate(-6deg);
}

.profile-picture {
  width: 180px;
  height: 180px;
  border-radius: 50%;
  object-fit: cover;
  border: 3px solid var(--clr-primary-muted);
  margin-bottom: 1rem;
  box-shadow: 0 0 0 6px #ffffff15;
}

/* Content */
#content {
  padding: var(--space-xl) var(--space-lg);
  max-width: 950px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: var(--space-xl);
}
section {
  background-color: var(--clr-bg-light-dark);
  box-shadow: var(--shadow-card);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
  margin-bottom: var(--space-lg);
  opacity: 0;
  transform: translateY(30px);
  transition: opacity .8s, transform .7s;
}
.section-visible {
  opacity: 1 !important;
  transform: none !important;
}
h1, h2, h3 {
  color: var(--clr-primary-muted);
  margin-bottom: 0.5rem;
  line-height: 1.2;
  font-weight: 700;
}
h2 {
  font-size: var(--fs-heading-2);
}
h3 {
  font-size: var(--fs-heading-3);
}

/* Soft skills */
.soft-skills-list {
  list-style: none;
  display: flex;
  gap: .7rem;
  margin-top: .7rem;
  padding: 0;
  flex-wrap: wrap;
}
.soft-skills-list li {
  background: rgba(43, 122, 239, 0.085);
  border-radius: var(--radius-md);
  color: var(--clr-primary-blue);
  padding: .35em .95em;
  font-size: .99em;
}

/* Projects Grid */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(290px, 1fr));
  gap: var(--space-md);
}
.project-card {
  background: #19232f;
  border-radius: var(--radius-md);
  box-shadow: 0 2px 10px #5ad1bd1a;
  padding: 1.2rem 1rem 1.35rem 1rem;
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
  border-left: 6px solid var(--clr-primary-muted);
  transition: transform .18s;
  min-height: 230px;
}
.project-card:hover, .project-card:focus-within {
  transform: translateY(-7px) scale(1.015);
  box-shadow: 0 5px 18px #2b7aef47;
}
.project-card h3 {
  margin-top: 0;
  align-self: flex-start;
}
.project-desc {
  margin-top: -.2em;
  margin-bottom: .8em;
  color: #c6e7df;
}
.tech-tags {
  list-style: none;
  padding: 0;
  display: flex;
  gap: .5rem;
  flex-wrap: wrap;
  margin-bottom: .7em;
}
.tech-tags li {
  background: #2b7aef21;
  color: var(--clr-primary-blue);
  padding: .2em .8em;
  border-radius: var(--radius-md);
  font-size: 0.98em;
}
.project-links a {
  color: var(--clr-primary-muted);
  text-decoration: underline;
  font-weight: 600;
  margin-right: 1.1em;
  transition: color .16s;
}
.project-links a:hover, .project-links a:focus {
  color: var(--clr-primary-blue);
}

/* Skills Grid & Badges */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--space-md) var(--space-lg);
  margin-top: 1.1em;
}
.skill-title {
  font-weight: 600;
  color: var(--clr-primary-blue);
}
.skill-badges {
  display: flex;
  flex-wrap: wrap;
  gap: .38em;
  margin-top: .35em;
}
.skill-badges span {
  display: inline-block;
  background: #4688e36a;
  color: #fff;
  border-radius: var(--radius-md);
  padding: .18em .7em;
  font-size: 0.99em;
  margin-bottom: .21em;
}

/* Education Timeline */
.edu-timeline {
  list-style: none;
  padding: 0;
  border-left: 3.5px solid var(--clr-primary-muted);
  margin-left: 14px;
  margin-top: 1.2em;
}
.edu-timeline li {
  position: relative;
  margin-bottom: .85em;
  padding-left: 1.4em;
  min-height: 2.3em;
}
.edu-timeline li::before {
  content: '';
  position: absolute;
  left: -13.5px;
  top: .33em;
  width: 17px;
  height: 17px;
  background-color: var(--clr-primary-muted);
  border-radius: 50%;
  border: 2.5px solid #282828;
}
.edu-title {
  font-weight: 600;
  color: var(--clr-primary-blue);
}
.edu-info {
  font-size: .99em;
  margin-left: .7em;
  color: #d2efe6;
}

/* Modal Styles */
.modal {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.68);
  justify-content: center;
  align-items: center;
  z-index: 1000;
  opacity: 0;
  transition: opacity 0.3s ease;
  pointer-events: none;
}
.modal.is-visible {
  display: flex;
  opacity: 1;
  pointer-events: auto;
}
.modal-content {
  background-color: var(--clr-bg-light-dark);
  border-radius: var(--radius-lg);
  padding: 2rem 2.5rem;
  max-width: 420px;
  color: var(--clr-text-light);
  box-shadow: 0 8px 24px #222 77;
  border: 1px solid var(--clr-border-light);
  position: relative;
}
.modal-content h3 {
  margin-bottom: var(--space-lg);
  color: var(--clr-primary-muted);
}
.modal-content label {
  display: block;
  margin-bottom: 0.3rem;
  font-weight: 600;
  color: var(--clr-primary-muted);
}
input[type="text"], input[type="email"], textarea {
  display: block;
  width: 100%;
  padding: 0.6rem 0.8rem;
  font-size: var(--fs-base);
  border: 1px solid var(--clr-border-light);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-lg);
  background-color: rgba(243,243,243,0.07);
  color: var(--clr-text-light);
}
input:focus, textarea:focus {
  outline: none;
  border-color: var(--clr-primary-blue);
  box-shadow: 0 0 0 2px rgba(43,122,239,0.12);
}
textarea {
  resize: vertical;
}
.modal-actions {
  display: flex;
  justify-content: flex-end;
  gap: var(--space-md);
  margin-top: var(--space-md);
}
.modal-actions button {
  padding: 0.6rem 1.3rem;
  border-radius: var(--radius-md);
  font-weight: 600;
  border: none;
  cursor: pointer;
  transition: background-color 0.18s;
  background: none;
  margin-top: 0;
}
.modal-actions .close-btn {
  background-color: #c9302c;
  color: #f3f3f3;
}
.modal-actions .close-btn:hover,
.modal-actions .close-btn:focus {
  background-color: #a12820;
}
.modal-actions .submit-btn {
  background-color: var(--clr-primary-muted);
  color: var(--clr-text-light);
}
.modal-actions .submit-btn:hover,
.modal-actions .submit-btn:focus {
  background-color: var(--clr-primary-blue);
}
.open-modal-btn {
  background-color: var(--clr-primary-muted);
  border: none;
  color: var(--clr-text-light);
  padding: 0.6rem 1.4rem;
  border-radius: var(--radius-md);
  font-weight: 600;
  cursor: pointer;
  transition: background-color .16s, box-shadow .15s;
  box-shadow: none;
  margin-top: var(--space-md);
}
.open-modal-btn:hover,
.open-modal-btn:focus {
  background-color: var(--clr-primary-blue);
  outline: none;
}
.email-link {
  color: var(--clr-primary-blue);
  text-decoration: underline;
  transition: color 0.2s;
  font-weight: 600;
}
.email-link:hover,
.email-link:focus {
  color: #faf600;
}

/* Responsive Design */
@media (max-width: 800px) {
  #content {
    padding: var(--space-md) .4em;
  }
  .project-card {
    min-height: 160px;
    padding: 0.65em 0.5em 1.2em 0.6em;
  }
  .skills-grid { grid-template-columns: 1fr; }
}
@media (max-width: 560px) {
  .profile-picture {
    width: 108px;
    height: 108px;
  }
  h1 { font-size: 1.45em; }
  h2 { font-size: 1.19em; }
  .social-icons img { width: 26px; height: 26px; }
  section { padding: .7em; }
  .modal-content { padding: 1em 0.5em; width: 96vw; }
}
canvas#backgroundCanvas {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
}