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

html {
  scroll-behavior: smooth;
}

body {
  font-family: Arial, Helvetica, sans-serif;
  background: #f8f9f7;
  color: #181818;
  line-height: 1.6;
}

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

button,
input,
textarea {
  font: inherit;
}

:root {
  --background: #f8f9f7;
  --background-soft: #f1f3f2;

  --text: #181818;
  --muted: #555555;
  --light-muted: #707070;

  --border: #ddddda;

  --accent: #315f8f;

  --white: #ffffff;
}

.container {
  width: min(1120px, 90%);
  margin: 0 auto;
}

.section {
  padding: 125px 0;
}

.eyebrow,
.section-eyebrow {
  color: var(--accent);

  font-size: 14px;

  font-weight: 700;

  letter-spacing: 2.5px;
}

.header {
  position: fixed;

  top: 0;
  left: 0;

  width: 100%;

  z-index: 1000;

  background: rgba(248, 249, 247, 0.95);

  border-bottom: 1px solid transparent;

  transition: border-color 0.25s ease;
}

.header.scrolled {
  border-color: var(--border);
}

.navbar {
  height: 80px;

  display: flex;

  align-items: center;

  justify-content: space-between;
}

.logo {
  display: flex;
  align-items: center;
  width: 48px;
  height: 30px;
  text-decoration: none;
  transform: translateY(2px);
}

.logo img {
  width: 48px;
  height: auto;
  display: block;
  object-fit: contain;
}


.nav-menu {
  display: flex;

  align-items: center;

  gap: 40px;

  list-style: none;
}

.nav-link {
  position: relative;

  color: #555555;

  font-size: 14px;

  transition: color 0.2s ease;
}

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

.nav-link.active::after {
  content: "";

  position: absolute;

  left: 0;
  bottom: -8px;

  width: 100%;
  height: 2px;

  background: var(--accent);
}

.menu-toggle {
  display: none;

  background: none;

  border: none;

  font-size: 25px;

  cursor: pointer;

  color: var(--text);
}



.hero {
  min-height: 100vh;

  display: flex;

  align-items: center;

  padding-top: 110px;
}

.hero-container {
  display: grid;

  grid-template-columns: 1.1fr 0.9fr;

  align-items: center;

  gap: 70px;
}

.hero-content {
  padding-bottom: 20px;
}

.hero h1 {
  font-size: clamp(48px, 6vw, 72px);

  line-height: 1;

  letter-spacing: -3px;

  font-weight: 600;

  margin: 22px 0 30px;
}

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

.hero-description {
  max-width: 500px;

  color: var(--muted);

  font-size: 18px;

  line-height: 1.7;

  margin-bottom: 35px;
}

.hero-actions {
  display: flex;

  align-items: center;

  gap: 28px;
}

.btn {
  display: inline-flex;

  align-items: center;

  justify-content: center;

  gap: 10px;

  background: var(--text);

  color: var(--white);

  padding: 14px 22px;

  font-size: 14px;

  border: none;

  border-radius: 50px;

  cursor: pointer;

  transition:
    background 0.2s ease,
    transform 0.2s ease;
}

.btn:hover {
  background: var(--accent);

  transform: translateY(-2px);
}

.text-link {
  display: inline-flex;

  align-items: center;

  gap: 7px;

  color: var(--muted);

  font-size: 14px;

  transition: color 0.2s ease;
}

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

.text-link i {
  color: var(--accent);
}


.hero-image-wrapper {
  position: relative;

  display: flex;
  align-items: center;
  justify-content: center;

  min-height: 500px;
}


.hero-image-wrapper::before {
  content: "";

  position: absolute;

  width: 410px;
  height: 410px;

  border-radius: 50%;

  background: rgba(49, 95, 143, 0.045);

  top: 50%;
  left: 50%;

  transform: translate(-50%, -50%);

  z-index: 0;
}

.image-decoration {
  display: none;
}


.hero-image {
  position: relative;

  width: 350px;
  height: 350px;

  z-index: 2;

  overflow: hidden;

  border-radius: 50%;

  border: 1px solid rgba(49, 95, 143, 0.65);

  background: #e9ebea;

  box-shadow:
    0 20px 45px rgba(24, 24, 24, 0.08);
}


.hero-image img {
  width: 100%;
  height: 100%;

  display: block;

  object-fit: cover;
}



.about {
  background: var(--background-soft);

  border-top: 1px solid var(--border);

  border-bottom: 1px solid var(--border);
}

.section-header {
  margin-bottom: 65px;
}

.section-label {
  margin-bottom: 22px;
}

.section-eyebrow {
  margin-bottom: 0;
}

.section-header h2 {
  max-width: 760px;

  font-size: clamp(42px, 4.5vw, 58px);

  line-height: 1.08;

  letter-spacing: -2px;

  font-weight: 600;
}

.section-header h2 span {
  color: #858585;
}

.about-layout {
  display: grid;

  grid-template-columns: 1fr 1fr;

  gap: 100px;

  align-items: start;
}

.about-main {
  max-width: 550px;
}

.about-main p {
  color: #555555;

  font-size: 17px;

  line-height: 1.8;

  margin-bottom: 25px;
}

.about-main .about-large-text {
  color: #333333;

  font-size: 21px;

  line-height: 1.65;

  margin-bottom: 30px;
}

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

.about-block {
  padding: 30px 0;

  border-bottom: 1px solid var(--border);
}

.about-block h3 {
  font-size: 16px;

  margin-bottom: 12px;
}

.about-block p {
  max-width: 440px;

  color: #555555;

  font-size: 14px;

  line-height: 1.75;
}

.skills {
  display: flex;

  flex-wrap: wrap;

  gap: 9px;
}

.skills span {
  padding: 7px 12px;

  border: 1px solid #d2d4d1;

  border-radius: 50px;

  color: #555555;

  background: #f8f9f7;

  font-size: 12px;

  transition:
    border-color 0.2s ease,
    color 0.2s ease;
}

.skills span:hover {
  color: var(--accent);

  border-color: var(--accent);
}

.contact {
  background: var(--background);
}

.contact-layout {
  display: grid;

  grid-template-columns: 0.75fr 1.25fr;

  gap: 80px;
}

.contact-info {
  padding-top: 5px;
}

.contact-intro {
  max-width: 400px;

  color: #555555;

  font-size: 17px;

  line-height: 1.7;

  margin-bottom: 30px;
}

.social-icons {
  display: flex;

  gap: 12px;

  margin-top: 25px;

  position: relative;

  top: 0;
}

.social-icons a {
  width: 43px;
  height: 43px;

  display: flex;

  align-items: center;

  justify-content: center;

  border: 1px solid #bdbfbc;

  border-radius: 50px;

  color: #444444;

  font-size: 20px;

  transition:
    color 0.2s ease,
    border-color 0.2s ease,
    transform 0.2s ease;
}

.social-icons a:hover {
  color: var(--accent);

  border-color: var(--accent);

  transform: translateY(-3px);
}

.contact-form {
  display: flex;

  flex-direction: column;

  gap: 20px;
}

.form-row {
  display: grid;

  grid-template-columns: 1fr 1fr;

  gap: 22px;
}

.form-group {
  display: flex;

  flex-direction: column;

  gap: 8px;
}

.form-group label {
  font-size: 12px;

  font-weight: 600;

  color: #444444;
}

.form-group input,
.form-group textarea {
  width: 100%;

  background: transparent;

  border: none;

  border-bottom: 1px solid #bfc1be;

  outline: none;

  color: var(--text);

  padding: 12px 0;

  resize: vertical;

  transition: border-color 0.2s ease;
}

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

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: #777777;
}

.submit-btn {
  align-self: flex-start;
}

.form-message {
  color: var(--accent);

  font-size: 13px;
}

.form-message {
  display: none;
  margin-bottom: 15px;
  padding: 12px 15px;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 500;
}

.form-message.success {
  display: block;
  color: #287a45;
  background: #eaf8ef;
  border: 1px solid #bfe8cc;
}

.form-message.error {
  display: block;
  color: #b42318;
  background: #fff1f0;
  border: 1px solid #f3c1bd;
}

.contact-button:disabled {
  opacity: 0.7;
  cursor: not-allowed;
}

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

  padding: 28px 0;

  background: var(--background-soft);
}

.footer-content {
  display: flex;

  align-items: center;

  justify-content: space-between;
}

.footer p {
  color: #555555;

  font-size: 12px;
}

.back-top {
  width: 40px;
  height: 40px;

  display: flex;

  align-items: center;

  justify-content: center;

  border: 1px solid #777777;

  border-radius: 20px;

  color: #444444;

  font-size: 20px;

  transition:
    color 0.2s ease,
    border-color 0.2s ease,
    transform 0.2s ease;
}

.back-top:hover {
  color: var(--accent);

  border-color: var(--accent);

  transform: translateY(-3px);
}

@media (max-width: 900px) {
  .hero-container {
    grid-template-columns: 1fr;

    gap: 70px;
  }

  .hero-image-wrapper {
    align-items: flex-start;
  }

  .about-layout,
  .contact-layout {
    grid-template-columns: 1fr;

    gap: 60px;
  }

  .contact-layout {
    position: relative;
    gap: 65px;
  }
}

.toast {
  position: fixed;
  top: 100px;
  right: 30px;

  display: flex;
  align-items: center;
  gap: 10px;

  width: max-content;
  max-width: calc(100vw - 60px);

  padding: 14px 20px;

  background: #ffffff;
  color: #287a45;

  border: 1px solid #c9ead3;
  border-radius: 8px;

  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.12);

  font-size: 14px;
  font-weight: 500;

  opacity: 0;
  visibility: hidden;
  pointer-events: none;

  transform: translateY(-15px);

  transition:
    opacity 0.3s ease,
    visibility 0.3s ease,
    transform 0.3s ease;

  z-index: 999999;
}

.toast i {
  font-size: 20px;
  color: #287a45;
  flex-shrink: 0;
}

.toast.show {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translateY(0);
}

@media (max-width: 600px) {
  .toast {
    top: 85px;
    left: 15px;
    right: 15px;

    width: auto;
    max-width: none;

    justify-content: center;
    text-align: center;
  }
}

.input-error {
  border-color: #d32f2f !important;
}

.validation-error {
  display: block;
  margin-top: 6px;
  color: #d32f2f;
  font-size: 12px;
  line-height: 1.4;
}

.form-group input.input-error:focus,
.form-group textarea.input-error:focus {
  box-shadow: 0 0 0 3px rgba(211, 47, 47, 0.08);
}


.hero-content {
  animation: heroContentIn 1s ease-out both;
}

.hero-image-wrapper {
  animation: heroImageIn 1.2s ease-out 0.15s both;
}

@keyframes heroContentIn {
  from {
    opacity: 0;
    transform: translateX(-40px);
  }

  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes heroImageIn {
  from {
    opacity: 0;
    transform: translateX(40px) scale(0.95);
  }

  to {
    opacity: 1;
    transform: translateX(0) scale(1);
  }
}

.section > .container {
  opacity: 0;
  transform: translateY(35px);
  transition:
    opacity 0.8s ease,
    transform 0.8s ease;
}

.section.visible > .container {
  opacity: 1;
  transform: translateY(0);
}


.hero-image {
  animation: floatingImage 5s ease-in-out infinite;
}

@keyframes floatingImage {
  0%,
  100% {
    transform: translateY(0);
  }

  50% {
    transform: translateY(-10px);
  }
}


@media (max-width: 600px) {
  .toast {
    right: 15px;
    left: 15px;
    bottom: 15px;
    justify-content: center;
  }
}

@media (max-width: 700px) {
  .section {
    padding: 90px 0;
  }

  .navbar {
    height: 72px;
  }

  .menu-toggle {
    display: block;
  }

  .nav-menu {
    position: absolute;

    top: 72px;
    left: 0;

    width: 100%;

    background: var(--background);

    border-bottom: 1px solid var(--border);

    display: none;

    flex-direction: column;

    gap: 0;
  }

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

  .nav-menu li {
    width: 100%;

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

  .nav-link {
    display: block;

    padding: 17px 6%;
  }

  .nav-link.active::after {
    display: none;
  }

  .hero {
    padding-top: 110px;

    padding-bottom: 90px;
  }

  .hero h1 {
    font-size: clamp(44px, 11vw, 64px);

    letter-spacing: -2.5px;
  }

  .hero-description {
    font-size: 16px;
  }

  .hero-image-wrapper {
    align-items: center;
  }

  .hero-image,
  .image-decoration {
    width: 290px;
    height: 350px;
  }

  .section-label {
    margin-bottom: 18px;
  }

  .section-eyebrow {
    font-size: 13px;
    letter-spacing: 2.2px;
    margin-bottom: 0;
  }
  .section-header h2 {
    font-size: 42px;

    letter-spacing: -1.5px;
  }

  .about-main .about-large-text {
    font-size: 19px;
  }

  .form-row {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  .container {
    width: 88%;
  }

  .hero h1 {
    font-size: 48px;
  }

  .hero-actions {
    align-items: flex-start;

    flex-direction: column;

    gap: 20px;
  }

  .hero-image,
  .image-decoration {
    width: 250px;
    height: 310px;
  }

  .section-eyebrow {
    font-size: 13px;

    letter-spacing: 2px;
  }

  .section-header h2 {
    font-size: 38px;
  }

  .footer-content {
    flex-direction: column;

    align-items: flex-start;

    gap: 10px;
  }
}