/* =========================
   1. Global styles
========================= */

:root {
  --bg: #080d18;
  --surface: #101827;
  --surface-light: #151f31;
  --text: #f1f5f9;
  --muted: #9ba9bd;
  --cyan: #22d3ee;
  --purple: #a78bfa;
  --border: rgba(148, 163, 184, 0.15);
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  scroll-behavior: smooth;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: "Segoe UI", Arial, sans-serif;
  line-height: 1.7;
  overflow-x: hidden;
}

a {
  color: inherit;
  text-decoration: none;
}

button,
a {
  -webkit-tap-highlight-color: transparent;
}

::selection {
  background: var(--cyan);
  color: var(--bg);
}

.section {
  padding: 110px max(7%, calc((100% - 1120px) / 2));
  scroll-margin-top: 80px;
}

.section-border {
  border-top: 1px solid var(--border);
}

/* =========================
   2. Navbar
========================= */

.navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  width: 100%;
  min-height: 76px;
  padding: 16px 7%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 24px;
  background: rgba(8, 13, 24, 0.92);
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(16px);
}

.logo {
  font-size: 25px;
  font-weight: 800;
  letter-spacing: -1px;
  white-space: nowrap;
}

.logo span,
.section-heading h2 span,
.contact-panel h2 span {
  color: var(--cyan);
}

.navbar nav {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 27px;
  flex-wrap: wrap;
}

.navbar nav a {
  color: var(--muted);
  font-size: 13px;
  font-weight: 600;
  transition: color 0.25s ease;
}

.navbar nav a:hover {
  color: var(--cyan);
}

/* =========================
   3. Hero
========================= */

.hero {
  min-height: calc(100vh - 76px);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 60px;
  position: relative;
  isolation: isolate;
}

.hero::before {
  content: "";
  position: absolute;
  width: 430px;
  height: 430px;
  top: 10%;
  right: -180px;
  background: rgba(34, 211, 238, 0.08);
  filter: blur(100px);
  border-radius: 50%;
  z-index: -1;
}

.hero-content {
  flex: 1.1;
  max-width: 620px;
}

.eyebrow {
  color: var(--cyan);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 2px;
  margin-bottom: 15px;
}

.status-dot {
  display: inline-block;
  width: 8px;
  height: 8px;
  background: #34d399;
  border-radius: 50%;
  margin-right: 7px;
  box-shadow: 0 0 12px rgba(52, 211, 153, 0.5);
}

.intro {
  font-size: 23px;
  color: var(--muted);
}

.hero h1 {
  margin: 5px 0 12px;
  font-size: clamp(48px, 6vw, 76px);
  line-height: 1.05;
  letter-spacing: -3px;
  font-weight: 800;
}

.hero h1 span {
  color: var(--cyan);
}

.hero h2 {
  color: var(--purple);
  font-size: 22px;
  font-weight: 600;
  margin-bottom: 18px;
}

.hero-description {
  max-width: 540px;
  color: var(--muted);
  font-size: 15px;
  margin-bottom: 28px;
}

.hero-buttons {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
}

.button {
  display: inline-flex;
  justify-content: center;
  align-items: center;
  gap: 12px;
  min-height: 47px;
  padding: 12px 21px;
  border-radius: 8px;
  font-size: 13px;
  font-weight: 700;
  transition:
    transform 0.25s ease,
    box-shadow 0.25s ease,
    background 0.25s ease;
}

.button:hover {
  transform: translateY(-3px) scale(1.03);
}

.button-primary {
  color: #06121b;
  background: var(--cyan);
  box-shadow: 0 6px 25px rgba(34, 211, 238, 0.12);
}

.button-primary:hover {
  box-shadow: 0 8px 32px rgba(34, 211, 238, 0.3);
}

.button-secondary {
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.025);
}

.button-secondary:hover {
  border-color: var(--purple);
  color: var(--purple);
}

.hero-note {
  margin-top: 25px;
  font-size: 12px;
  color: #73839b;
}

/* Developer code illustration */

.hero-visual {
  position: relative;
  flex: 0.9;
  min-width: 0;
  min-height: 370px;
  display: flex;
  justify-content: center;
  align-items: center;
}

.profile-card {
  width: min(100%, 380px);
  position: relative;
  z-index: 2;
  background: linear-gradient(145deg, #172438, #0c1422);
  border: 1px solid rgba(34, 211, 238, 0.23);
  border-radius: 15px;
  box-shadow: 0 25px 80px rgba(0, 0, 0, 0.25);
  overflow: hidden;
  transform: rotate(-2deg);
  transition: transform 0.35s ease;
}

.profile-card:hover {
  transform: rotate(0) translateY(-5px);
}

.card-top {
  height: 47px;
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 0 17px;
  border-bottom: 1px solid var(--border);
}

.window-dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
}

.dot-red { background: #fb7185; }
.dot-yellow { background: #fbbf24; }
.dot-green { background: #34d399; }

.card-label {
  margin-left: auto;
  font-size: 11px;
  color: var(--muted);
}

.code-art {
  padding: 27px 20px 30px;
  font-family: Consolas, "Courier New", monospace;
  font-size: clamp(11px, 1.2vw, 14px);
  line-height: 2.1;
  white-space: nowrap;
}

.code-art p {
  margin: 0;
}

.indent { padding-left: 22px; }
.double { padding-left: 44px; }
.code-purple { color: #c4a5fd; }
.code-blue { color: #7dd3fc; }
.code-green { color: #86efac; }
.code-comment { color: #72839b; margin-top: 10px !important; }

.orbit {
  position: absolute;
  border: 1px solid rgba(167, 139, 250, 0.18);
  border-radius: 50%;
}

.orbit-one {
  width: 390px;
  height: 390px;
}

.orbit-two {
  width: 310px;
  height: 310px;
  border-color: rgba(34, 211, 238, 0.2);
}

.floating-tag {
  position: absolute;
  z-index: 3;
  background: #172438;
  border: 1px solid var(--border);
  border-radius: 9px;
  padding: 9px 13px;
  font-size: 11px;
  font-weight: 700;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.25);
}

.tag-top {
  top: 18%;
  right: -2%;
  color: var(--cyan);
}

.tag-bottom {
  bottom: 14%;
  left: -2%;
  color: var(--text);
}

/* =========================
   4. Section headings
========================= */

.section-heading {
  text-align: center;
  margin-bottom: 55px;
}

.section-heading .eyebrow {
  margin-bottom: 8px;
}

.section-heading h2 {
  font-size: clamp(32px, 4vw, 45px);
  line-height: 1.2;
  letter-spacing: -1.5px;
  margin-bottom: 13px;
}

.section-heading > p:last-child {
  color: var(--muted);
  font-size: 14px;
}

/* =========================
   5. About
========================= */

.about-layout {
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  align-items: center;
  gap: 70px;
}

.about-mark {
  min-height: 290px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  background:
    radial-gradient(circle at center, rgba(34, 211, 238, 0.13), transparent 65%),
    var(--surface);
  border: 1px solid var(--border);
  border-radius: 18px;
}

.about-mark > span {
  font-size: 85px;
  font-weight: 900;
  letter-spacing: -7px;
  line-height: 1.2;
  background: linear-gradient(135deg, var(--cyan), var(--purple));
  color: transparent;
  background-clip: text;
  -webkit-background-clip: text;
}

.about-mark p {
  color: var(--muted);
  font-size: 12px;
  margin-top: 15px;
}

.about-content h3 {
  font-size: 23px;
  line-height: 1.4;
  margin-bottom: 18px;
}

.about-content p {
  max-width: 620px;
  color: var(--muted);
  font-size: 14px;
  margin-bottom: 16px;
}

.text-link {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  color: var(--cyan);
  font-size: 13px;
  font-weight: 700;
  margin-top: 8px;
}

.text-link span {
  transition: transform 0.2s ease;
}

.text-link:hover span {
  transform: translateX(5px);
}

.info-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
  margin-top: 45px;
}

.info-card {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 19px 15px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 11px;
}

.info-icon {
  display: grid;
  place-items: center;
  flex-shrink: 0;
  width: 36px;
  height: 36px;
  border-radius: 9px;
  background: rgba(34, 211, 238, 0.09);
  color: var(--cyan);
  font-size: 20px;
}

.info-card h3 {
  font-size: 11px;
  margin-bottom: 2px;
}

.info-card p {
  color: var(--muted);
  font-size: 10px;
}

/* =========================
   6. Skills
========================= */

.skills-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
}

.skill-card {
  padding: 27px 22px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 13px;
  transition: transform 0.25s ease, border-color 0.25s ease;
}

.skill-card:hover,
.project-card:hover {
  transform: translateY(-5px);
  border-color: rgba(34, 211, 238, 0.4);
}

.skill-icon {
  display: grid;
  place-items: center;
  width: 47px;
  height: 47px;
  margin-bottom: 22px;
  border-radius: 12px;
  font-size: 24px;
  font-weight: 800;
}

.html-icon {
  color: #fb923c;
  background: rgba(251, 146, 60, 0.12);
}

.css-icon {
  color: #60a5fa;
  background: rgba(96, 165, 250, 0.12);
}

.flex-icon {
  color: #c4b5fd;
  background: rgba(167, 139, 250, 0.12);
}

.tw-icon {
  color: var(--cyan);
  background: rgba(34, 211, 238, 0.12);
}

.skill-card h3 {
  font-size: 17px;
  margin-bottom: 9px;
}

.skill-card p {
  min-height: 75px;
  color: var(--muted);
  font-size: 12px;
}

.skill-status {
  display: inline-block;
  color: var(--cyan);
  font-size: 10px;
  font-weight: 700;
  margin-top: 17px;
}

.section-footnote {
  text-align: center;
  margin-top: 30px;
  color: #75849a;
  font-size: 12px;
}

/* =========================
   7. Learning journey
========================= */

.timeline {
  max-width: 850px;
  margin: 0 auto;
}

.timeline-item {
  display: grid;
  grid-template-columns: 48px 1fr auto;
  align-items: center;
  gap: 22px;
  padding: 26px 0;
  border-bottom: 1px solid var(--border);
}

.timeline-number {
  display: grid;
  place-items: center;
  width: 45px;
  height: 45px;
  border: 1px solid rgba(34, 211, 238, 0.25);
  border-radius: 12px;
  color: var(--cyan);
  background: rgba(34, 211, 238, 0.06);
  font-size: 13px;
  font-weight: 800;
}

.timeline-label {
  color: var(--cyan);
  font-size: 9px;
  font-weight: 800;
  letter-spacing: 1.5px;
}

.timeline-item h3 {
  font-size: 17px;
  margin: 4px 0;
}

.timeline-item div > p:last-child {
  color: var(--muted);
  font-size: 12px;
}

.timeline-state {
  padding: 5px 10px;
  border: 1px solid var(--border);
  border-radius: 20px;
  color: var(--muted);
  font-size: 10px;
  white-space: nowrap;
}

.active-state {
  color: var(--cyan);
  border-color: rgba(34, 211, 238, 0.3);
  background: rgba(34, 211, 238, 0.07);
}

/* =========================
   8. Projects
========================= */

.projects-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 25px;
}

.project-card {
  min-width: 0;
  overflow: hidden;
  border: 1px solid var(--border);
  border-radius: 15px;
  background: var(--surface);
  transition: transform 0.25s ease, border-color 0.25s ease;
}

.project-preview {
  min-height: 220px;
  position: relative;
  overflow: hidden;
}

.portfolio-preview {
  display: grid;
  place-items: center;
  background:
    radial-gradient(circle at 80% 20%, rgba(34, 211, 238, 0.19), transparent 40%),
    linear-gradient(135deg, #111d31, #0a1220);
}

.preview-window {
  position: absolute;
  top: 15px;
  left: 18px;
  display: flex;
  gap: 5px;
}

.preview-window span {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #64748b;
}

.preview-content {
  width: 65%;
  padding: 18px;
  border: 1px solid rgba(148, 163, 184, 0.2);
  background: rgba(8, 13, 24, 0.65);
  border-radius: 10px;
}

.preview-label {
  display: block;
  color: var(--cyan);
  font-size: 8px;
  letter-spacing: 1.2px;
  margin-bottom: 9px;
}

.preview-content strong {
  font-size: 27px;
}

.preview-content strong span {
  color: var(--cyan);
}

.preview-line {
  width: 90%;
  height: 5px;
  border-radius: 5px;
  background: #334155;
  margin-top: 13px;
}

.short-line {
  width: 58%;
  margin-top: 7px;
}

.preview-button {
  width: 60px;
  height: 16px;
  margin-top: 15px;
  border-radius: 4px;
  background: var(--cyan);
}

.food-preview {
  display: flex;
  justify-content: center;
  align-items: center;
  background: linear-gradient(135deg, #182d2c, #101827);
}

.food-circle {
  position: absolute;
  width: 180px;
  height: 180px;
  right: -25px;
  top: 18px;
  border: 25px solid rgba(52, 211, 153, 0.1);
  border-radius: 50%;
}

.food-card {
  position: relative;
  z-index: 1;
  width: 70%;
  padding: 20px;
  background: rgba(8, 13, 24, 0.78);
  border: 1px solid rgba(52, 211, 153, 0.22);
  border-radius: 10px;
}

.food-card span {
  color: #6ee7b7;
  font-size: 8px;
  letter-spacing: 1px;
}

.food-card strong {
  display: block;
  margin-top: 9px;
  font-size: 29px;
  line-height: 1.1;
}

.food-line {
  width: 55px;
  height: 4px;
  background: #6ee7b7;
  border-radius: 5px;
  margin-top: 15px;
}

.project-info {
  padding: 25px;
}

.project-type {
  color: var(--cyan);
  font-size: 9px;
  font-weight: 800;
  letter-spacing: 1.5px;
}

.project-info h3 {
  font-size: 21px;
  margin: 6px 0;
}

.project-info > p:not(.project-type) {
  color: var(--muted);
  font-size: 13px;
}

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 17px 0;
}

.tag-list span {
  padding: 5px 9px;
  border: 1px solid var(--border);
  border-radius: 6px;
  color: #b7c4d7;
  font-size: 10px;
}

.project-note {
  display: inline-block;
  color: var(--muted);
  font-size: 11px;
  margin-top: 8px;
}

/* =========================
   9. Contact
========================= */

.contact-panel {
  max-width: 750px;
  margin: 0 auto;
  padding: 65px 30px;
  text-align: center;
  background:
    radial-gradient(circle at top, rgba(34, 211, 238, 0.09), transparent 60%),
    var(--surface);
  border: 1px solid var(--border);
  border-radius: 20px;
}

.contact-panel h2 {
  font-size: clamp(37px, 5vw, 54px);
  line-height: 1.15;
  letter-spacing: -1.5px;
  margin-bottom: 20px;
}

.contact-panel > p:not(.eyebrow):not(.contact-note) {
  max-width: 500px;
  margin: 0 auto 25px;
  color: var(--muted);
  font-size: 14px;
}

.contact-note {
  color: #75849a;
  font-size: 10px;
  margin-top: 18px;
}

/* =========================
   10. Footer
========================= */

.footer {
  display: grid;
  grid-template-columns: 1fr 2fr 1fr;
  align-items: center;
  gap: 20px;
  padding: 35px 7%;
  border-top: 1px solid var(--border);
}

.footer > p {
  text-align: center;
  color: var(--muted);
  font-size: 11px;
}

.back-top {
  justify-self: end;
  color: var(--cyan);
  font-size: 12px;
  font-weight: 700;
}

.copyright {
  grid-column: 1 / -1;
  padding-top: 15px;
  border-top: 1px solid var(--border);
}

/* =========================
   11. Responsive layout
========================= */

@media (max-width: 1000px) {
  .navbar {
    padding-inline: 5%;
  }

  .navbar nav {
    gap: 15px;
  }

  .section {
    padding: 85px 5%;
  }

  .hero {
    gap: 30px;
  }

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

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

  .tag-top {
    right: 0;
  }

  .tag-bottom {
    left: 0;
  }
}

@media (max-width: 700px) {
  .navbar {
    position: relative;
    flex-direction: column;
    gap: 13px;
    padding: 18px 5%;
  }

  .navbar nav {
    gap: 10px 18px;
  }

  .navbar nav a {
    font-size: 12px;
  }

  .section {
    padding: 70px 6%;
  }

  .hero {
    min-height: auto;
    flex-direction: column;
    align-items: stretch;
    gap: 45px;
    padding-top: 75px;
  }

  .hero h1 {
    font-size: clamp(48px, 12vw, 70px);
  }

  .hero-visual {
    min-height: 340px;
    width: 100%;
  }

  .profile-card {
    max-width: 360px;
  }

  .orbit-one {
    width: 320px;
    height: 320px;
  }

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

  .tag-top {
    right: 0;
    top: 8%;
  }

  .tag-bottom {
    left: 0;
    bottom: 5%;
  }

  .about-layout {
    grid-template-columns: 1fr;
    gap: 35px;
  }

  .about-mark {
    min-height: 220px;
  }

  .info-grid {
    gap: 10px;
  }

  .info-card {
    padding: 13px 10px;
    gap: 9px;
  }

  .info-card h3 {
    font-size: 10px;
  }

  .info-card p {
    font-size: 9px;
  }

  .timeline-item {
    grid-template-columns: 40px 1fr;
    gap: 15px;
  }

  .timeline-number {
    width: 40px;
    height: 40px;
  }

  .timeline-state {
    grid-column: 2;
    justify-self: start;
  }

  .projects-grid {
    grid-template-columns: 1fr;
  }

  .footer {
    grid-template-columns: 1fr 1fr;
    text-align: center;
  }

  .footer > p:first-of-type {
    grid-column: 1 / -1;
    grid-row: 2;
  }

  .back-top {
    justify-self: end;
  }

  .copyright {
    grid-row: 3;
  }
}

@media (max-width: 400px) {
  .skills-grid,
  .info-grid {
    grid-template-columns: 1fr;
  }

  .hero-buttons {
    align-items: stretch;
    flex-direction: column;
  }

  .button {
    width: 100%;
  }

  .code-art {
    font-size: 11px;
    padding-inline: 13px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }
}