/* =========================================================
   GLOBAL DESIGN SETTINGS
   Edit these colors once to change the whole website theme.
   ========================================================= */
:root {
  --bg: #0f1014;
  --bg-soft: #17181f;
  --surface: #1d2028;
  --surface-light: #252a34;
  --text: #f6f7fb;
  --muted: #aeb4c2;
  --line: rgba(255, 255, 255, 0.11);
  --accent: #35d0ba;
  --accent-strong: #20b7a1;
  --gold: #f2b84b;
  --rose: #ef6f8f;
  --danger: #ff6b6b;
  --shadow: 0 22px 70px rgba(0, 0, 0, 0.28);
  --radius: 8px;
  --container: 1120px;
}

/* Makes scrolling feel smooth when clicking navbar links. */
html {
  scroll-behavior: smooth;
  overflow-x: hidden;
}

/* Basic body styling. */
body {
  margin: 0;
  font-family: "Inter", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background:
    linear-gradient(120deg, rgba(53, 208, 186, 0.09), transparent 32%),
    linear-gradient(240deg, rgba(242, 184, 75, 0.08), transparent 30%),
    linear-gradient(180deg, #0f1014 0%, #12141b 45%, #0f1014 100%);
  color: var(--text);
  overflow-x: hidden;
}

/* Keeps width consistent across sections. */
.container {
  width: min(var(--container), calc(100% - 40px));
  margin: 0 auto;
}

main,
section {
  max-width: 100%;
  overflow-x: hidden;
}

/* Better default sizing for every element. */
* {
  box-sizing: border-box;
}

/* Removes default link color and keeps transitions consistent. */
a {
  color: inherit;
  text-decoration: none;
}

/* Keeps images/media responsive if you add any later. */
img,
svg {
  display: block;
  max-width: 100%;
}

/* Accessible keyboard focus style. */
:focus-visible {
  outline: 3px solid rgba(53, 208, 186, 0.55);
  outline-offset: 3px;
}

/* Screen-reader and keyboard shortcut to jump past the navbar. */
.skip-link {
  position: fixed;
  left: 16px;
  top: -60px;
  z-index: 1000;
  padding: 10px 14px;
  background: var(--accent);
  color: #07110f;
  border-radius: var(--radius);
  font-weight: 700;
  transition: top 0.2s ease;
}

.skip-link:focus {
  top: 16px;
}

/* =========================================================
   NAVBAR
   ========================================================= */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  border-bottom: 1px solid transparent;
  transition: background 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
}

/* JavaScript adds this class after the page scrolls. */
.site-header.scrolled {
  background: rgba(15, 16, 20, 0.86);
  border-color: var(--line);
  box-shadow: 0 12px 36px rgba(0, 0, 0, 0.22);
  backdrop-filter: blur(16px);
}

.navbar {
  min-height: 74px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
}

.brand-mark {
  width: 40px;
  height: 40px;
  display: grid;
  place-items: center;
  border-radius: var(--radius);
  background: linear-gradient(135deg, var(--accent), var(--gold));
  color: #08110f;
  box-shadow: 0 12px 28px rgba(53, 208, 186, 0.22);
}

.brand-name {
  letter-spacing: 0;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 6px;
}

.nav-links a {
  padding: 10px 12px;
  border-radius: var(--radius);
  color: var(--muted);
  font-size: 0.95rem;
  font-weight: 600;
  transition: color 0.2s ease, background 0.2s ease;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--text);
  background: rgba(255, 255, 255, 0.07);
}

/* Hamburger icon. Hidden on desktop, shown on mobile. */
.menu-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.06);
  cursor: pointer;
}

.menu-toggle span {
  display: block;
  width: 18px;
  height: 2px;
  margin: 4px auto;
  background: var(--text);
  border-radius: 999px;
  transition: transform 0.2s ease, opacity 0.2s ease;
}

/* Turns the hamburger into an X when menu is open. */
.menu-toggle.is-open span:nth-child(1) {
  transform: translateY(6px) rotate(45deg);
}

.menu-toggle.is-open span:nth-child(2) {
  opacity: 0;
}

.menu-toggle.is-open span:nth-child(3) {
  transform: translateY(-6px) rotate(-45deg);
}

/* =========================================================
   SHARED SECTION STYLES
   ========================================================= */
.section {
  padding: 96px 0;
  scroll-margin-top: 90px;
}

.alt-section {
  background: rgba(255, 255, 255, 0.025);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.section-heading {
  max-width: 590px;
}

.section-heading.centered {
  text-align: center;
  margin: 0 auto 38px;
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--accent);
  font-weight: 800;
  font-size: 0.78rem;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  margin-bottom: 18px;
  font-size: clamp(2.7rem, 7vw, 5.8rem);
  line-height: 0.96;
  letter-spacing: 0;
}

h2 {
  margin-bottom: 16px;
  font-size: clamp(2rem, 4vw, 3.3rem);
  line-height: 1.05;
  letter-spacing: 0;
}

h3 {
  margin-bottom: 10px;
  font-size: 1.1rem;
}

p {
  color: var(--muted);
  line-height: 1.75;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 18px;
  border: 1px solid transparent;
  border-radius: var(--radius);
  font: inherit;
  font-weight: 800;
  cursor: pointer;
  transition: transform 0.2s ease, border-color 0.2s ease, background 0.2s ease, color 0.2s ease;
}

.btn:hover {
  transform: translateY(-2px);
}

.btn-primary {
  background: var(--accent);
  color: #06110f;
}

.btn-primary:hover {
  background: #59e4d0;
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.06);
  border-color: var(--line);
  color: var(--text);
}

.btn-secondary:hover {
  border-color: rgba(53, 208, 186, 0.45);
}

.btn-danger {
  background: rgba(255, 107, 107, 0.12);
  border-color: rgba(255, 107, 107, 0.25);
  color: #ffd4d4;
}

/* Scroll reveal animation. JavaScript adds .is-visible. */
.reveal {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* =========================================================
   HERO
   ========================================================= */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: 130px;
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(320px, 0.92fr);
  align-items: center;
  gap: 54px;
}

.hero-text {
  max-width: 640px;
  font-size: 1.16rem;
}

/* Prevents long content or the visual panel from creating horizontal scroll. */
.hero-copy,
.hero-visual {
  min-width: 0;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 30px;
}

/* Main visual card in the first screen. */
.hero-visual {
  width: 100%;
  display: flex;
  justify-content: center;
}

.profile-card {
  position: relative;
  width: 100%;
  max-width: 410px;
  min-height: 460px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.12), transparent 45%),
    linear-gradient(160deg, rgba(53, 208, 186, 0.15), rgba(239, 111, 143, 0.11)),
    var(--surface);
  box-shadow: var(--shadow);
}

.profile-avatar {
  position: absolute;
  left: 50%;
  top: 50%;
  width: 150px;
  height: 150px;
  display: grid;
  place-items: center;
  border: 1px solid rgba(255, 255, 255, 0.22);
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), var(--gold));
  color: #06110f;
  font-size: 3.2rem;
  font-weight: 900;
  transform: translate(-50%, -52%);
  box-shadow: 0 28px 80px rgba(0, 0, 0, 0.34);
  z-index: 2;
}

.profile-lines {
  position: absolute;
  left: 28px;
  right: 28px;
  bottom: 30px;
  display: grid;
  gap: 12px;
}

.profile-lines span {
  height: 10px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.13);
}

.profile-lines span:nth-child(1) {
  width: 70%;
}

.profile-lines span:nth-child(2) {
  width: 92%;
}

.profile-lines span:nth-child(3) {
  width: 54%;
}

/* Animated rings around the profile initials. */
.orbit {
  position: absolute;
  left: 50%;
  top: 47%;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 50%;
  transform: translate(-50%, -50%);
  animation: spin 18s linear infinite;
}

.orbit-one {
  width: 260px;
  height: 260px;
}

.orbit-two {
  width: 340px;
  height: 340px;
  animation-duration: 28s;
  animation-direction: reverse;
}

.tech-pill {
  position: absolute;
  z-index: 3;
  padding: 9px 12px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(15, 16, 20, 0.82);
  color: var(--text);
  font-weight: 800;
  font-size: 0.82rem;
}

.pill-one {
  top: 82px;
  left: 46px;
}

.pill-two {
  right: 42px;
  top: 142px;
}

.pill-three {
  left: 74px;
  bottom: 132px;
}

@keyframes spin {
  to {
    transform: translate(-50%, -50%) rotate(360deg);
  }
}

/* =========================================================
   ABOUT
   ========================================================= */
.split-section {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: 56px;
  align-items: start;
}

.about-content {
  padding: 26px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.04);
}

.quick-facts {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin-top: 26px;
}

.quick-facts div {
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(0, 0, 0, 0.12);
}

.quick-facts span {
  display: block;
  margin-bottom: 7px;
  color: var(--muted);
  font-size: 0.78rem;
}

.quick-facts strong {
  display: block;
  line-height: 1.35;
}

/* =========================================================
   SKILLS
   ========================================================= */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}

.skill-card,
.project-card,
.contact-form {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.045);
  box-shadow: 0 18px 50px rgba(0, 0, 0, 0.18);
}

.skill-card {
  padding: 20px;
}

.skill-top {
  display: flex;
  justify-content: space-between;
  gap: 16px;
}

.skill-top span {
  color: var(--accent);
  font-weight: 900;
}

.progress {
  height: 9px;
  overflow: hidden;
  margin: 16px 0;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.1);
}

.progress span {
  display: block;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--accent), var(--gold));
}

/* =========================================================
   PROJECTS
   ========================================================= */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.project-card {
  overflow: hidden;
  transition: transform 0.2s ease, border-color 0.2s ease;
}

.project-card:hover {
  transform: translateY(-6px);
  border-color: rgba(53, 208, 186, 0.4);
}

/* Visual blocks for project cards. Replace with real images later if you want. */
.project-media {
  min-height: 170px;
  border-bottom: 1px solid var(--line);
}

.media-one {
  background:
    linear-gradient(135deg, rgba(53, 208, 186, 0.8), transparent 58%),
    repeating-linear-gradient(90deg, rgba(255, 255, 255, 0.16) 0 1px, transparent 1px 28px),
    #26313a;
}

.media-two {
  background:
    linear-gradient(135deg, rgba(242, 184, 75, 0.76), transparent 60%),
    repeating-linear-gradient(0deg, rgba(255, 255, 255, 0.14) 0 1px, transparent 1px 24px),
    #332b22;
}

.media-three {
  background:
    linear-gradient(135deg, rgba(239, 111, 143, 0.75), transparent 58%),
    repeating-linear-gradient(135deg, rgba(255, 255, 255, 0.12) 0 1px, transparent 1px 22px),
    #302634;
}

.project-body {
  padding: 22px;
}

.project-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 16px;
}

.project-tags span {
  padding: 6px 9px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--muted);
  font-size: 0.76rem;
  font-weight: 800;
}

.project-body a {
  display: inline-flex;
  margin-top: 4px;
  color: var(--accent);
  font-weight: 800;
}

/* =========================================================
   PERSONAL TREE
   ========================================================= */
.tree-shell {
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background:
    linear-gradient(135deg, rgba(53, 208, 186, 0.08), transparent 46%),
    rgba(255, 255, 255, 0.04);
  box-shadow: var(--shadow);
}

.tree-header {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 24px;
  align-items: start;
  margin-bottom: 26px;
}

.tree-controls {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 10px;
}

.tree-list,
.children-list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.children-list {
  position: relative;
  margin-left: 22px;
  padding-left: 22px;
}

/* Branch connector line. */
.children-list::before {
  content: "";
  position: absolute;
  left: 4px;
  top: 0;
  bottom: 16px;
  width: 1px;
  background: linear-gradient(var(--accent), rgba(255, 255, 255, 0.07));
}

.tree-node {
  margin-bottom: 12px;
}

.node-card {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 12px;
  align-items: center;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(15, 16, 20, 0.58);
  transition: border-color 0.2s ease, transform 0.2s ease, background 0.2s ease;
}

.node-card:hover {
  border-color: rgba(53, 208, 186, 0.38);
  background: rgba(255, 255, 255, 0.06);
  transform: translateX(3px);
}

.node-toggle {
  width: 100%;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px;
  border: 0;
  background: transparent;
  color: var(--text);
  font: inherit;
  text-align: left;
  cursor: pointer;
}

.toggle-icon {
  flex: 0 0 28px;
  width: 28px;
  height: 28px;
  display: grid;
  place-items: center;
  border-radius: var(--radius);
  background: rgba(53, 208, 186, 0.12);
  color: var(--accent);
  font-weight: 900;
  transition: transform 0.2s ease, background 0.2s ease;
}

.tree-node.is-open > .node-card .toggle-icon {
  background: var(--accent);
  color: #06110f;
  transform: rotate(45deg);
}

.node-text {
  min-width: 0;
}

.node-text strong,
.node-text small {
  display: block;
}

.node-text strong {
  overflow-wrap: anywhere;
}

.node-text small {
  margin-top: 4px;
  color: var(--muted);
  line-height: 1.4;
}

.node-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  padding-right: 12px;
}

.mini-btn {
  min-height: 34px;
  padding: 0 10px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.06);
  color: var(--text);
  font: inherit;
  font-size: 0.8rem;
  font-weight: 800;
  cursor: pointer;
  transition: background 0.2s ease, border-color 0.2s ease;
}

.mini-btn:hover {
  border-color: rgba(53, 208, 186, 0.45);
}

.mini-btn.danger {
  color: #ffd4d4;
}

/* Smooth expand/collapse without calculating heights in JavaScript. */
.node-panel {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows 0.32s ease;
}

.tree-node.is-open > .node-panel {
  grid-template-rows: 1fr;
}

.node-panel-inner {
  overflow: hidden;
}

.node-content {
  margin: 10px 0 12px 40px;
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.04);
  color: var(--muted);
  line-height: 1.75;
}

.node-content strong {
  color: var(--text);
}

/* =========================================================
   CONTACT
   ========================================================= */
.contact-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(320px, 1.1fr);
  gap: 52px;
  align-items: start;
}

.contact-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 24px;
}

.contact-links a {
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  color: var(--muted);
  font-weight: 700;
  transition: color 0.2s ease, border-color 0.2s ease;
}

.contact-links a:hover {
  color: var(--text);
  border-color: rgba(53, 208, 186, 0.45);
}

.contact-form {
  display: grid;
  gap: 12px;
  padding: 24px;
}

.contact-form label {
  color: var(--text);
  font-weight: 800;
}

.contact-form input,
.contact-form textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.07);
  color: var(--text);
  font: inherit;
  padding: 13px 14px;
  resize: vertical;
}

.contact-form input::placeholder,
.contact-form textarea::placeholder {
  color: #7f8796;
}

/* =========================================================
   FOOTER
   ========================================================= */
.footer {
  border-top: 1px solid var(--line);
  padding: 24px 0;
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.footer p {
  margin: 0;
}

.footer a {
  color: var(--accent);
  font-weight: 800;
}

/* =========================================================
   RESPONSIVE DESIGN
   ========================================================= */
@media (max-width: 960px) {
  .hero-grid,
  .split-section,
  .contact-grid,
  .tree-header {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: auto;
  }

  .tree-controls {
    justify-content: flex-start;
  }

  .skills-grid,
  .projects-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 720px) {
  .container {
    width: calc(100% - 28px);
  }

  .section {
    padding: 74px 0;
  }

  .brand-name {
    display: none;
  }

  .menu-toggle {
    display: block;
  }

  .nav-links {
    position: absolute;
    left: 14px;
    right: 14px;
    top: 74px;
    display: none;
    flex-direction: column;
    align-items: stretch;
    padding: 12px;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: rgba(15, 16, 20, 0.96);
    box-shadow: var(--shadow);
  }

  .nav-links.is-open {
    display: flex;
  }

  .nav-links a {
    padding: 13px 14px;
  }

  .hero {
    padding-top: 116px;
  }

  .hero-grid {
    gap: 34px;
    justify-items: start;
  }

  .hero-copy,
  .hero-visual {
    width: 100%;
    max-width: 360px;
  }

  h1 {
    font-size: clamp(2.35rem, 9vw, 3.25rem);
  }

  .profile-card {
    width: 100%;
    min-height: 360px;
  }

  .profile-avatar {
    width: 122px;
    height: 122px;
    font-size: 2.5rem;
  }

  .orbit-one {
    width: 220px;
    height: 220px;
  }

  .orbit-two {
    width: 290px;
    height: 290px;
  }

  .quick-facts,
  .skills-grid,
  .projects-grid {
    grid-template-columns: 1fr;
  }

  .tree-shell {
    padding: 18px;
  }

  .node-card {
    grid-template-columns: 1fr;
  }

  .node-actions {
    padding: 0 12px 12px 54px;
    flex-wrap: wrap;
  }

  .node-content {
    margin-left: 18px;
  }

  .children-list {
    margin-left: 12px;
    padding-left: 14px;
  }

  .footer-inner {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (max-width: 460px) {
  .hero-actions,
  .tree-controls {
    flex-direction: column;
  }

  .btn {
    width: 100%;
  }

  .tech-pill {
    font-size: 0.72rem;
  }

  .pill-two {
    right: 18px;
  }

  .pill-three {
    left: 28px;
  }
}

/* Respect users who prefer less motion. */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }
}