@font-face {
  font-family: "Poppins";
  src: url("../../css/lib/fonts/Poppins-Regular.ttf") format("truetype");
  font-weight: 400;
  font-style: normal;
}

@font-face {
  font-family: "Poppins";
  src: url("../../css/lib/fonts/Poppins-Bold.ttf") format("truetype");
  font-weight: 700;
  font-style: normal;
}

@font-face {
  font-family: "Montserrat";
  src: url("../../css/lib/fonts/Montserrat-Regular.ttf") format("truetype");
  font-weight: 400;
  font-style: normal;
}

:root {
  --bg: #0d1117;
  --bg-elevated: #111826;
  --bg-card: #151d2a;
  --bg-card-soft: #182231;
  --border: rgba(143, 197, 255, 0.12);
  --text: #e6edf3;
  --text-muted: #94a3b8;
  --accent: #54b6ff;
  --accent-soft: rgba(84, 182, 255, 0.14);
  --shadow: 0 18px 50px rgba(0, 0, 0, 0.28);
  --radius: 20px;
  --radius-sm: 14px;
  --container: 1180px;
  --header-height: 76px;
  --transition: 220ms ease;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 320px;
  font-family: "Poppins", "Segoe UI", sans-serif;
  background:
    radial-gradient(circle at top, rgba(84, 182, 255, 0.08), transparent 28%),
    var(--bg);
  color: var(--text);
  line-height: 1.7;
}

body.menu-open {
  overflow: hidden;
}

img {
  max-width: 100%;
  display: block;
}

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

button,
input,
textarea {
  font: inherit;
}

button {
  cursor: pointer;
}

.container {
  width: min(calc(100% - 2rem), var(--container));
  margin: 0 auto;
}

.section {
  padding: 5.5rem 0;
  scroll-margin-top: calc(var(--header-height) + 24px);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(12px);
  background: rgba(13, 17, 23, 0.88);
  border-bottom: 1px solid rgba(148, 163, 184, 0.08);
}

.navbar {
  min-height: var(--header-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.02em;
}

.brand-mark {
  width: 2.4rem;
  height: 2.4rem;
  border-radius: 0.9rem;
  display: grid;
  place-items: center;
  background: var(--accent-soft);
  color: var(--accent);
  border: 1px solid rgba(84, 182, 255, 0.22);
}

.brand-text {
  color: var(--text);
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 1.2rem;
}

.nav-link {
  color: var(--text-muted);
  font-size: 0.95rem;
  transition: color var(--transition);
}

.nav-link:hover,
.nav-link.active {
  color: var(--text);
}

.nav-toggle {
  display: none;
  width: 3rem;
  height: 3rem;
  padding: 0.75rem;
  border: 1px solid rgba(148, 163, 184, 0.16);
  border-radius: 0.9rem;
  background: rgba(21, 29, 42, 0.9);
  flex-direction: column;
  justify-content: center;
  gap: 0.28rem;
}

.nav-toggle span {
  width: 100%;
  height: 2px;
  background: var(--text);
  transition: transform var(--transition), opacity var(--transition);
}

.nav-toggle[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(6px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}

.nav-toggle[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-6px) rotate(-45deg);
}

.hero {
  padding-top: 4.5rem;
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(280px, 0.85fr);
  gap: 2rem;
  align-items: stretch;
}

.hero-copy h1,
.section-heading h2,
.project-card h3,
.timeline-card h3,
.contact-card h3,
.skill-card h3,
.mini-card h3 {
  font-family: "Montserrat", "Poppins", sans-serif;
}

.hero-copy h1 {
  margin: 0 0 1rem;
  font-size: clamp(2.8rem, 6vw, 5rem);
  line-height: 1.06;
  letter-spacing: -0.04em;
}

.eyebrow {
  margin: 0 0 1rem;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.14em;
  font-size: 0.82rem;
  font-weight: 600;
}

.hero-tagline {
  margin: 0 0 1.25rem;
  min-height: 2rem;
  font-size: 1.15rem;
  color: #c8d7e8;
}

.hero-tagline::after {
  content: "";
  display: inline-block;
  width: 1px;
  height: 1.1em;
  margin-left: 0.35rem;
  vertical-align: -0.15em;
  background: var(--accent);
  animation: blink 0.9s steps(1) infinite;
}

.hero-intro {
  max-width: 60ch;
  margin: 0;
  color: var(--text-muted);
}

.hero-actions {
  margin-top: 2rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.9rem;
}

.button,
.text-link {
  transition:
    transform var(--transition),
    border-color var(--transition),
    background-color var(--transition),
    color var(--transition),
    box-shadow var(--transition);
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 3rem;
  padding: 0.85rem 1.25rem;
  border-radius: 999px;
  border: 1px solid transparent;
  font-weight: 600;
}

.button:hover,
.text-link:hover {
  transform: translateY(-2px);
}

.button-primary {
  background: var(--accent);
  color: #06111d;
  box-shadow: 0 12px 30px rgba(84, 182, 255, 0.18);
}

.button-primary:hover {
  background: #72c4ff;
}

.button-secondary {
  background: transparent;
  border-color: rgba(84, 182, 255, 0.3);
  color: var(--text);
}

.button-secondary:hover,
.button-muted:hover {
  background: rgba(255, 255, 255, 0.03);
  border-color: rgba(84, 182, 255, 0.42);
}

.button-muted {
  background: rgba(255, 255, 255, 0.02);
  border-color: rgba(148, 163, 184, 0.14);
  color: var(--text-muted);
}

.hero-panel,
.section-card {
  background: linear-gradient(180deg, rgba(24, 34, 49, 0.92), rgba(17, 24, 38, 0.94));
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.hero-panel {
  padding: 1.2rem;
  display: grid;
  gap: 1rem;
}

.metric-card {
  padding: 1.1rem;
  border-radius: 1rem;
  background: rgba(13, 17, 23, 0.46);
  border: 1px solid rgba(148, 163, 184, 0.08);
}

.metric-label,
.timeline-date {
  color: var(--accent);
  font-size: 0.82rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.metric-card strong {
  display: block;
  margin-top: 0.3rem;
  font-size: 1.05rem;
}

.metric-card p,
.project-card p,
.timeline-card p,
.section-card p,
.contact-list a,
.contact-list span {
  color: var(--text-muted);
}

.section-heading {
  max-width: 46rem;
  margin-bottom: 2rem;
}

.section-heading h2 {
  margin: 0;
  font-size: clamp(2rem, 4vw, 3rem);
  line-height: 1.15;
  letter-spacing: -0.03em;
}

.about-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr);
  gap: 1.5rem;
}

.section-card {
  padding: 1.5rem;
}

.about-points,
.skills-grid,
.projects-grid {
  display: grid;
  gap: 1.25rem;
}

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

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

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

.mini-card {
  height: 100%;
}

.mini-card h3,
.skill-card h3,
.project-card h3,
.timeline-card h3,
.contact-card h3 {
  margin-top: 0;
  margin-bottom: 0.85rem;
  font-size: 1.15rem;
}

.tag-list,
.timeline-highlights,
.contact-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
}

.tag-list li {
  padding: 0.5rem 0.8rem;
  border-radius: 999px;
  background: rgba(84, 182, 255, 0.08);
  border: 1px solid rgba(84, 182, 255, 0.14);
  color: #d6e8f7;
  font-size: 0.92rem;
}

.project-card {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
}

.project-card:hover,
.skill-card:hover,
.mini-card:hover,
.timeline-card:hover,
.contact-card:hover,
.contact-form:hover,
.metric-card:hover {
  border-color: rgba(84, 182, 255, 0.24);
}

.project-header {
  display: flex;
  align-items: start;
  justify-content: space-between;
  gap: 1rem;
}

.project-badge {
  white-space: nowrap;
  padding: 0.4rem 0.7rem;
  border-radius: 999px;
  background: rgba(84, 182, 255, 0.1);
  color: var(--accent);
  font-size: 0.8rem;
  border: 1px solid rgba(84, 182, 255, 0.16);
}

.text-link {
  width: fit-content;
  margin-top: auto;
  color: var(--accent);
  font-weight: 600;
}

.timeline {
  position: relative;
  display: grid;
  gap: 1.4rem;
  padding-left: 1.2rem;
}

.timeline::before {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0.45rem;
  width: 1px;
  background: linear-gradient(rgba(84, 182, 255, 0.35), rgba(84, 182, 255, 0.06));
}

.timeline-item {
  position: relative;
  padding-left: 1.8rem;
}

.timeline-marker {
  position: absolute;
  top: 1.25rem;
  left: -0.08rem;
  width: 1rem;
  height: 1rem;
  border-radius: 999px;
  border: 3px solid var(--bg);
  background: var(--accent);
  box-shadow: 0 0 0 6px rgba(84, 182, 255, 0.08);
}

.timeline-role {
  margin-top: -0.3rem;
}

.timeline-highlights {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  margin-top: 1rem;
}

.timeline-highlights li {
  padding: 0.5rem 0.8rem;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.03);
  color: #c8d7e8;
}

.contact-grid {
  display: grid;
  grid-template-columns: minmax(280px, 0.9fr) minmax(0, 1.1fr);
  gap: 1.5rem;
}

.contact-list {
  display: grid;
  gap: 1rem;
}

.contact-list li {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}

.contact-list span {
  font-size: 0.88rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.contact-list a:hover {
  color: var(--text);
}

.contact-form {
  display: grid;
  gap: 1rem;
}

.form-note {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.92rem;
}

.form-group {
  display: grid;
  gap: 0.45rem;
}

.form-group label {
  color: #d7e5f2;
  font-size: 0.94rem;
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 0.95rem 1rem;
  border: 1px solid rgba(148, 163, 184, 0.14);
  border-radius: 1rem;
  background: rgba(13, 17, 23, 0.72);
  color: var(--text);
  transition: border-color var(--transition), box-shadow var(--transition);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: #708297;
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: rgba(84, 182, 255, 0.48);
  box-shadow: 0 0 0 3px rgba(84, 182, 255, 0.12);
}

.site-footer {
  border-top: 1px solid rgba(148, 163, 184, 0.08);
  padding: 1.5rem 0 2.5rem;
}

.site-footer p {
  margin: 0;
  color: var(--text-muted);
  text-align: center;
}

.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition:
    opacity 600ms ease,
    transform 600ms ease;
}

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

@keyframes blink {
  50% {
    opacity: 0;
  }
}

@media (max-width: 1080px) {
  .hero-grid,
  .about-grid,
  .contact-grid,
  .skills-grid,
  .projects-grid {
    grid-template-columns: 1fr;
  }

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

@media (max-width: 780px) {
  .section {
    padding: 4.5rem 0;
  }

  .nav-toggle {
    display: inline-flex;
  }

  .nav-menu {
    position: absolute;
    top: calc(100% + 0.75rem);
    left: 1rem;
    right: 1rem;
    padding: 1rem;
    border-radius: 1.2rem;
    border: 1px solid rgba(148, 163, 184, 0.12);
    background: rgba(17, 24, 38, 0.98);
    box-shadow: var(--shadow);
    display: grid;
    gap: 0.25rem;
    opacity: 0;
    pointer-events: none;
    transform: translateY(-8px);
    transition:
      opacity var(--transition),
      transform var(--transition);
  }

  .nav-menu.is-open {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0);
  }

  .nav-link {
    padding: 0.85rem 0.9rem;
    border-radius: 0.9rem;
  }

  .nav-link:hover,
  .nav-link.active {
    background: rgba(255, 255, 255, 0.03);
  }

  .hero {
    padding-top: 3rem;
  }

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

  .about-points {
    grid-template-columns: 1fr;
  }

  .project-header {
    flex-direction: column;
  }
}

@media (max-width: 520px) {
  .container {
    width: min(calc(100% - 1.25rem), var(--container));
  }

  .section-card,
  .hero-panel {
    padding: 1.15rem;
  }

  .hero-copy h1 {
    font-size: 2.5rem;
  }

  .section-heading h2 {
    font-size: 1.85rem;
  }
}