:root {
  --color-bg: #ffffff;
  --color-surface: #ffffff;
  --color-text: #111111;
  --color-muted: #565656;
  --color-soft: #f6f6f6;
  --color-line: #e8e8e8;
  --color-accent: #d71920;
  --color-accent-dark: #b91419;
  --shadow-soft: 0 18px 45px rgba(17, 17, 17, 0.08);
  --shadow-card: 0 10px 30px rgba(17, 17, 17, 0.07);
  --radius: 8px;
  --container: 1120px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 92px;
}

body {
  margin: 0;
  background: var(--color-bg);
  color: var(--color-text);
  font-family: Arial, Helvetica, sans-serif;
  line-height: 1.6;
}

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

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

button,
input,
textarea {
  font: inherit;
}

.container {
  width: min(100% - 48px, var(--container));
  margin: 0 auto;
}

.section {
  padding: 72px 0;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(255, 255, 255, 0.96);
  border-bottom: 1px solid var(--color-line);
  backdrop-filter: blur(12px);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 76px;
  gap: 28px;
}

.logo {
  font-size: 1.9rem;
  font-weight: 700;
  letter-spacing: 0;
}

.logo span {
  color: var(--color-accent);
}

.nav-menu {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 48px;
  flex: 1;
}

.nav-links {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 30px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.nav-links a {
  position: relative;
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  color: #222222;
  font-size: 0.97rem;
  font-weight: 700;
  transition: color 180ms ease;
}

.nav-links a::after {
  position: absolute;
  left: 0;
  bottom: 4px;
  width: 0;
  height: 2px;
  background: var(--color-accent);
  content: "";
  transition: width 180ms ease;
}

.nav-links a:hover,
.nav-links a:focus,
.nav-links a.active {
  color: var(--color-accent);
}

.nav-links a:hover::after,
.nav-links a:focus::after,
.nav-links a.active::after {
  width: 100%;
}

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  padding: 10px;
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  background: var(--color-surface);
  cursor: pointer;
}

.nav-toggle span {
  display: block;
  width: 100%;
  height: 2px;
  margin: 5px 0;
  background: var(--color-text);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 48px;
  padding: 0 22px;
  border: 1px solid var(--color-accent);
  border-radius: var(--radius);
  font-weight: 700;
  line-height: 1;
  transition: transform 180ms ease, background 180ms ease, color 180ms ease, box-shadow 180ms ease;
}

.btn:hover,
.btn:focus {
  transform: translateY(-2px);
  box-shadow: var(--shadow-card);
}

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

.btn-primary:hover,
.btn-primary:focus {
  background: var(--color-accent-dark);
}

.btn-outline {
  background: #ffffff;
  color: var(--color-accent);
}

.btn-outline:hover,
.btn-outline:focus {
  background: var(--color-accent);
  color: #ffffff;
}

.hero {
  min-height: 640px;
  display: flex;
  align-items: center;
  border-bottom: 1px solid var(--color-line);
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(320px, 0.92fr);
  align-items: center;
  gap: 76px;
}

.intro-line {
  display: inline-flex;
  align-items: center;
  gap: 18px;
  margin: 0 0 16px;
  color: #303030;
  font-size: 1.18rem;
}

.intro-line::after {
  width: 46px;
  height: 2px;
  background: var(--color-accent);
  content: "";
}

.hero h1 {
  margin: 0;
  font-size: clamp(3.15rem, 6vw, 5rem);
  line-height: 1.05;
  letter-spacing: 0;
}

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

.hero-subtitle {
  margin: 18px 0 20px;
  color: #4c4c4c;
  font-size: 1.28rem;
  font-weight: 600;
}

.hero-copy {
  max-width: 650px;
  margin: 0;
  color: var(--color-muted);
  font-size: 1.06rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 22px;
  margin-top: 34px;
}

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

.social-links a {
  color: #111111;
  font-weight: 800;
  transition: color 180ms ease;
}

.social-links a:hover,
.social-links a:focus {
  color: var(--color-accent);
}

.hero-media {
  position: relative;
  display: flex;
  justify-content: center;
}

.hero-media::before,
.hero-media::after {
  position: absolute;
  z-index: -1;
  content: "";
}

.hero-media::before {
  inset: 18% auto auto -10%;
  width: 220px;
  height: 220px;
  border-radius: 50%;
  background: rgba(215, 25, 32, 0.06);
}

.hero-media::after {
  top: 8%;
  right: 3%;
  width: 130px;
  height: 190px;
  opacity: 0.35;
  background-image: radial-gradient(var(--color-accent) 1px, transparent 1px);
  background-size: 18px 18px;
}

.photo-card {
  width: min(100%, 360px);
  aspect-ratio: 0.88;
  padding: 8px;
  border: 1px solid var(--color-line);
  border-radius: 10px;
  background: #ffffff;
  box-shadow: var(--shadow-soft);
}

.photo-card img,
.photo-placeholder {
  width: 100%;
  height: 100%;
  border-radius: 6px;
  object-fit: cover;
}

.photo-placeholder {
  display: none;
  place-items: center;
  border: 1px dashed rgba(215, 25, 32, 0.45);
  background: linear-gradient(135deg, #fbfbfb, #f1f1f1);
  color: var(--color-muted);
  font-weight: 800;
}

.section-heading {
  margin-bottom: 28px;
}

.section-label {
  margin: 0 0 4px;
  color: var(--color-accent);
  font-weight: 800;
}

.section-heading h2,
.about-panel h2,
.resume-box h2,
.contact-grid h2 {
  margin: 0;
  font-size: clamp(1.9rem, 3vw, 2.35rem);
  line-height: 1.15;
}

.row-heading {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 24px;
}

.text-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--color-accent);
  font-weight: 800;
  transition: color 180ms ease, transform 180ms ease;
}

.text-link:hover,
.text-link:focus {
  color: var(--color-accent-dark);
  transform: translateX(2px);
}

.project-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 28px;
}

.project-card {
  display: grid;
  grid-template-columns: 70px 1fr;
  gap: 22px;
  min-height: 210px;
  padding: 28px;
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  background: var(--color-surface);
  box-shadow: var(--shadow-card);
  transition: border-color 180ms ease, transform 180ms ease, box-shadow 180ms ease;
}

.project-card:hover {
  border-color: rgba(215, 25, 32, 0.35);
  transform: translateY(-5px);
  box-shadow: 0 18px 42px rgba(17, 17, 17, 0.11);
}

.project-icon {
  display: grid;
  place-items: center;
  width: 62px;
  height: 62px;
  border-radius: var(--radius);
  background: rgba(215, 25, 32, 0.08);
  color: var(--color-accent);
  font-weight: 900;
}

.project-card h3 {
  margin: 0 0 8px;
  font-size: 1.14rem;
}

.project-card p {
  margin: 0;
  color: var(--color-muted);
}

.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 18px;
}

.tags span,
.skills-grid span {
  display: inline-flex;
  align-items: center;
  min-height: 32px;
  padding: 6px 12px;
  border-radius: 6px;
  background: var(--color-soft);
  color: #474747;
  font-size: 0.9rem;
  font-weight: 700;
}

.split-section {
  padding-top: 40px;
}

.split-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(320px, 0.75fr);
  gap: 52px;
  align-items: start;
}

.about-panel {
  padding-left: 44px;
  border-left: 1px solid var(--color-line);
}

.about-panel p:not(.section-label) {
  color: var(--color-muted);
}

.skills-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.experience-list {
  display: grid;
  gap: 18px;
}

.experience-item {
  padding: 24px 28px;
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  background: #ffffff;
}

.experience-item h3 {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0 0 8px;
  font-size: 1.16rem;
}

.experience-item h3 span {
  color: var(--color-accent);
}

.experience-item p {
  max-width: 850px;
  margin: 0;
  color: var(--color-muted);
}

.resume-section {
  background: #fafafa;
  border-block: 1px solid var(--color-line);
}

.resume-box {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
}

.resume-box p:not(.section-label) {
  max-width: 650px;
  color: var(--color-muted);
}

.contact-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.8fr) minmax(320px, 1fr);
  gap: 58px;
}

.contact-grid p {
  color: var(--color-muted);
}

.site-url {
  color: var(--color-text);
  font-weight: 800;
}

.contact-form {
  display: grid;
  gap: 18px;
}

.form-row {
  display: grid;
  gap: 7px;
}

label {
  color: #222222;
  font-weight: 800;
}

label span {
  color: var(--color-muted);
  font-size: 0.88rem;
  font-weight: 600;
}

input,
textarea {
  width: 100%;
  border: 1px solid #d8d8d8;
  border-radius: var(--radius);
  background: #ffffff;
  color: var(--color-text);
  outline: none;
  transition: border-color 180ms ease, box-shadow 180ms ease;
}

input {
  min-height: 48px;
  padding: 0 14px;
}

textarea {
  min-height: 136px;
  padding: 12px 14px;
  resize: vertical;
}

input:focus,
textarea:focus {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 4px rgba(215, 25, 32, 0.1);
}

.form-row.error input,
.form-row.error textarea {
  border-color: var(--color-accent);
}

.error-message {
  min-height: 18px;
  color: var(--color-accent);
  font-size: 0.84rem;
}

.form-status {
  min-height: 24px;
  margin: 0;
  color: #166534;
  font-weight: 800;
}

.footer {
  border-top: 1px solid var(--color-line);
  padding: 24px 0;
}

.footer-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  color: var(--color-muted);
  font-size: 0.95rem;
}

.footer p {
  margin: 0;
}

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

@media (max-width: 980px) {
  .nav-toggle {
    display: block;
  }

  .nav-menu {
    position: absolute;
    top: 76px;
    left: 0;
    right: 0;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 18px;
    padding: 20px 24px 24px;
    border-bottom: 1px solid var(--color-line);
    background: #ffffff;
    box-shadow: var(--shadow-card);
  }

  .nav-menu.open {
    display: flex;
  }

  .nav-links {
    flex-direction: column;
    align-items: stretch;
    gap: 6px;
  }

  .nav-links a {
    width: 100%;
  }

  .nav-resume {
    width: 100%;
  }

  .hero {
    min-height: auto;
  }

  .hero-grid,
  .split-grid,
  .contact-grid {
    grid-template-columns: 1fr;
  }

  .hero-grid {
    gap: 48px;
  }

  .hero-media {
    order: -1;
  }

  .photo-card {
    width: min(100%, 320px);
  }

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

  .about-panel {
    padding-left: 0;
    border-left: 0;
  }
}

@media (max-width: 680px) {
  .container {
    width: min(100% - 32px, var(--container));
  }

  .section {
    padding: 56px 0;
  }

  .nav {
    min-height: 68px;
  }

  .nav-menu {
    top: 68px;
  }

  .hero h1 {
    font-size: clamp(2.65rem, 14vw, 3.35rem);
  }

  .hero-subtitle {
    font-size: 1.05rem;
  }

  .hero-actions,
  .resume-box,
  .footer-content,
  .row-heading {
    align-items: stretch;
    flex-direction: column;
  }

  .btn {
    width: 100%;
  }

  .project-card {
    grid-template-columns: 1fr;
    padding: 24px;
  }

  .skills-grid {
    gap: 10px;
  }

  .skills-grid span {
    flex: 1 1 calc(50% - 10px);
    justify-content: center;
    text-align: center;
  }
}