:root {
  color-scheme: dark;
  --bg: #000000;
  --bg2: #0a0a0a;
  --text: rgba(255, 255, 255, 0.92);
  --muted: rgba(255, 255, 255, 0.68);
  --muted2: rgba(255, 255, 255, 0.56);
  --line: rgba(255, 255, 255, 0.12);
  --panel: rgba(255, 255, 255, 0.06);
  --panel-strong: rgba(255, 255, 255, 0.09);
  --shadow: 0 18px 50px rgba(0, 0, 0, 0.55);
  --accent: #7c5cff;
  --accent2: #22d3ee;
  --radius: 18px;
  --container: 1060px;
  --header-height: 64px;
}

* {
  box-sizing: border-box;
}

html,
body {
  height: 100%;
}

html {
  overflow-x: hidden;
}

body {
  margin: 0;
  padding-top: var(--header-height);
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica,
    Arial, "Apple Color Emoji", "Segoe UI Emoji";
  line-height: 1.55;
  color: var(--text);
  background: var(--bg);
}

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

a:focus-visible,
button:focus-visible {
  outline: 3px solid rgba(124, 92, 255, 0.55);
  outline-offset: 3px;
  border-radius: 12px;
}

.container {
  width: min(var(--container), calc(100% - 96px));
  margin: 0;
}

/* Header / Nav */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 10;
  backdrop-filter: blur(10px);
  background: rgba(0, 0, 0, 0.85);
  border-bottom: 1px solid var(--line);
  padding: 0 48px;
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 14px 0;
}

.logo {
  font-weight: 800;
  letter-spacing: 0.4px;
  padding: 8px 10px;
  border-radius: 12px;
  font-size: 1.2rem;
}

.logo:hover {
  background: rgba(255, 255, 255, 0.04);
}

.logo-img {
  display: block;
  height: 40px;
  width: auto;
  border-radius: 8px;
}

.nav-list {
  display: flex;
  align-items: center;
  gap: 18px;
  list-style: none;
  padding: 0;
  margin: 0;
  color: var(--muted);
}

.nav-list a {
  display: inline-flex;
  padding: 8px 10px;
  border-radius: 12px;
  font-size: 1.05rem;
}

.nav-list a:hover {
  color: var(--text);
  background: rgba(255, 255, 255, 0.04);
}

/* Hero */
.hero {
  padding: 72px 48px 84px;
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 28px;
  align-items: start;
}

.hero-greeting {
  margin: 0 0 10px;
  color: var(--muted);
  font-weight: 600;
  letter-spacing: 0.2px;
  font-size: clamp(1.6rem, 3.5vw, 2.1rem);
}

.hero-title {
  margin: 0;
  font-size: clamp(52px, 8vw, 88px);
  line-height: 1.05;
  letter-spacing: -0.8px;
  min-height: 1.1em;
}

.hero-title-rotating {
  display: inline-block;
  transition: opacity 0.25s ease;
}

.hero-subtitle {
  margin: 12px 0 22px;
  max-width: 60ch;
  color: var(--muted);
  font-size: 1.25rem;
  line-height: 1.6;
}

.hero-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 18px 0 18px;
}

.primary-button,
.secondary-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 14px 20px;
  border-radius: 14px;
  border: 1px solid transparent;
  font-weight: 700;
  font-size: 1.05rem;
  letter-spacing: 0.2px;
  transition: transform 120ms ease, background 160ms ease, border-color 160ms ease,
    box-shadow 160ms ease;
  user-select: none;
}

.primary-button {
  background: linear-gradient(135deg, var(--accent), rgba(34, 211, 238, 0.9));
  color: rgba(10, 12, 18, 0.92);
  box-shadow: 0 14px 36px rgba(124, 92, 255, 0.22);
}

.primary-button:hover {
  transform: translateY(-1px);
  box-shadow: 0 18px 46px rgba(124, 92, 255, 0.28);
}

.secondary-button {
  background: var(--panel);
  border-color: var(--line);
  color: var(--text);
}

.secondary-button:hover {
  transform: translateY(-1px);
  border-color: rgba(255, 255, 255, 0.22);
  background: var(--panel-strong);
}

.quick-facts {
  margin: 18px 0 0;
  padding: 0;
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.quick-facts li {
  padding: 10px 16px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.04);
  color: var(--muted);
  font-weight: 600;
  font-size: 1.1rem;
}

/* Hero card */
.hero-card {
  border: 1px solid var(--line);
  background: linear-gradient(165deg, rgba(255, 255, 255, 0.06) 0%, rgba(255, 255, 255, 0.02) 100%);
  border-radius: var(--radius);
  padding: 32px 28px;
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.hero-card-img {
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  border-radius: 12px;
  margin-bottom: 4px;
  border: 1px solid var(--line);
}

.card-label {
  margin: 0;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted2);
}

.card-title {
  margin: 0;
  font-size: 1.35rem;
  font-weight: 700;
  letter-spacing: -0.3px;
  color: var(--text);
  line-height: 1.3;
}

.card-description {
  margin: 0;
  color: var(--muted);
  font-size: 1.05rem;
  line-height: 1.65;
}

.card-tags {
  margin: 0;
  font-size: 0.9rem;
  color: var(--muted2);
  font-weight: 500;
}

.card-text-subtle {
  margin: 0;
  padding-top: 14px;
  border-top: 1px solid var(--line);
  color: var(--muted2);
  font-size: 0.95rem;
  line-height: 1.5;
}

.card-cta {
  display: inline-flex;
  align-items: center;
  align-self: flex-start;
  margin-top: 4px;
  padding: 10px 16px;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.04);
  color: var(--text);
  font-weight: 600;
  font-size: 0.95rem;
  transition: border-color 0.2s ease, background 0.2s ease;
}

.card-cta:hover {
  border-color: var(--accent);
  background: rgba(124, 92, 255, 0.12);
}

/* Section common */
section.about,
section.contact {
  padding: 80px 48px 100px;
}

section.projects {
  padding: 80px 0 100px;
  width: 100vw;
  margin-left: calc(-50vw + 50%);
  box-sizing: border-box;
}

.section-header {
  margin-bottom: 48px;
  max-width: 60ch;
}

.section-header h2 {
  margin: 0 0 16px;
  font-size: clamp(1.75rem, 4vw, 2.25rem);
  font-weight: 800;
  letter-spacing: -0.4px;
}

.section-header p {
  margin: 0 0 10px;
  color: var(--muted);
  font-size: 1.1rem;
  line-height: 1.6;
}

.section-header p:last-child {
  margin-bottom: 0;
}

/* Projects */
.projects .container {
  max-width: none;
  width: 100%;
  padding: 0;
  box-sizing: border-box;
}

.projects .section-header {
  padding: 0 48px;
  max-width: none;
}

.project-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-top: 48px;
  width: 100%;
  box-sizing: border-box;
  padding: 0 32px;
  max-width: 100%;
}

.project-card {
  border: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.06), rgba(255, 255, 255, 0.02));
  border-radius: var(--radius);
  padding: 28px 24px;
  min-height: 300px;
  display: flex;
  flex-direction: column;
  transition: border-color 0.2s ease, background 0.2s ease;
  min-width: 0;
}

.project-card:hover {
  border-color: rgba(255, 255, 255, 0.18);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.08), rgba(255, 255, 255, 0.04));
}

.project-card h3 {
  margin: 0 0 12px;
  font-size: 1.3rem;
  font-weight: 700;
  letter-spacing: -0.2px;
}

.project-card p {
  margin: 0 0 20px;
  color: var(--muted);
  font-size: 1.05rem;
  line-height: 1.6;
  flex: 1;
}

.project-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.project-tags a {
  display: inline-flex;
  align-items: center;
  padding: 8px 14px;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: var(--panel);
  color: var(--text);
  font-weight: 600;
  font-size: 0.95rem;
  transition: border-color 0.2s ease, background 0.2s ease, color 0.2s ease;
}

.project-tags a:hover {
  border-color: var(--accent);
  background: rgba(124, 92, 255, 0.12);
  color: var(--text);
}

/* About */
.about-container {
  display: grid;
  grid-template-columns: 1fr minmax(280px, 1fr);
  gap: 48px 56px;
  align-items: stretch;
  max-width: 960px;
  margin: 0 auto;
}

.about-content {
  min-width: 0;
}

.about-brand {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 20px;
  padding: 40px;
  min-height: 320px;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.03);
}

.about-brand-img {
  width: 100%;
  max-width: 280px;
  height: auto;
  display: block;
  border-radius: 12px;
  object-fit: contain;
}

.about-brand-text {
  font-size: 2rem;
  font-weight: 800;
  letter-spacing: 0.02em;
  color: var(--text);
}

.skills-grid h3 {
  margin: 0 0 16px;
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text);
}

.skills-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.skills-list li {
  padding: 10px 18px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.04);
  color: var(--muted);
  font-weight: 600;
  font-size: 1.05rem;
}

/* Contact */
.contact .container {
  display: grid;
  grid-template-columns: 1fr minmax(320px, 400px);
  gap: 48px 56px;
  align-items: start;
  max-width: 960px;
  margin: 0 auto;
}

.contact .section-header {
  grid-column: 1;
  text-align: left;
  margin-bottom: 10px;
}

.contact-form {
  grid-column: 2;
  grid-row: 1 / -1;
  display: flex;
  flex-direction: column;
  gap: 20px;
  width: 100%;
}

.contact-form label {
  display: flex;
  flex-direction: column;
  gap: 8px;
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--text);
}

.contact-form input,
.contact-form textarea {
  width: 100%;
  padding: 12px 14px;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: var(--panel);
  color: var(--text);
  font-size: 1rem;
  font-family: inherit;
  transition: border-color 0.2s ease, background 0.2s ease;
  box-sizing: border-box;
}

.contact-form input::placeholder,
.contact-form textarea::placeholder {
  color: var(--muted2);
}

.contact-form input:focus,
.contact-form textarea:focus {
  outline: none;
  border-color: rgba(255, 255, 255, 0.25);
  background: var(--panel-strong);
}

.contact-form textarea {
  resize: vertical;
  min-height: 120px;
}

.contact-form .button.primary,
.contact-form button.primary {
  align-self: flex-start;
  padding: 12px 20px;
  border-radius: 14px;
  border: none;
  font-weight: 700;
  font-size: 1rem;
  cursor: pointer;
  background: linear-gradient(135deg, var(--accent), rgba(34, 211, 238, 0.9));
  color: rgba(10, 12, 18, 0.92);
  box-shadow: 0 14px 36px rgba(124, 92, 255, 0.22);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.contact-form .button.primary:hover,
.contact-form button.primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 18px 46px rgba(124, 92, 255, 0.28);
}

.contact-form .form-note {
  margin: 0;
  font-size: 0.9rem;
  color: var(--muted2);
  line-height: 1.5;
}

.contact-links {
  grid-column: 1;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: -300px;
}

.contact-links a {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 12px 18px;
  border-radius: 14px;
  border: 1px solid var(--line);
  background: var(--panel);
  color: var(--text);
  font-weight: 700;
  font-size: 1rem;
  transition: border-color 0.2s ease, background 0.2s ease, transform 0.2s ease;
}

.contact-icon {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
}

.contact-links a:hover {
  border-color: rgba(255, 255, 255, 0.25);
  background: var(--panel-strong);
  transform: translateY(-2px);
}

.contact-links a:first-child {
  border-color: var(--accent);
  background: rgba(124, 92, 255, 0.15);
}

.contact-links a:first-child:hover {
  background: rgba(124, 92, 255, 0.22);
  border-color: var(--accent);
}

/* Responsive */
@media (max-width: 900px) {
  .hero {
    grid-template-columns: 1fr;
    padding: 54px 48px 72px;
  }

  .hero-subtitle {
    max-width: 70ch;
  }

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

@media (max-width: 640px) {
  .project-grid {
    grid-template-columns: 1fr;
  }

  .project-card {
    min-height: 240px;
    padding: 28px 24px;
  }
}

@media (max-width: 768px) {
  .about-container {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .about-brand {
    flex-direction: row;
    gap: 16px;
    min-height: 0;
    padding: 28px;
  }

  .about-brand-img {
    max-width: 120px;
    width: 120px;
  }

  .about-brand-text {
    font-size: 1.5rem;
  }

  .contact .container {
    grid-template-columns: 1fr;
    gap: 40px;
    max-width: 520px;
    margin-left: auto;
    margin-right: auto;
  }

  .contact-form {
    grid-column: 1;
    grid-row: auto;
  }

  .contact-links {
    grid-column: 1;
  }
}

@media (max-width: 560px) {
  .container {
    width: min(var(--container), calc(100% - 32px));
  }

  .nav {
    flex-wrap: wrap;
    gap: 10px;
  }

  .nav-list {
    gap: 8px;
    flex-wrap: wrap;
    justify-content: flex-start;
  }

  section.about,
  section.contact {
    padding: 56px 24px 72px;
  }

  section.projects {
    padding: 56px 0 72px;
  }

  .projects .section-header {
    padding: 0 24px;
  }

  .section-header {
    margin-bottom: 36px;
  }
}