:root {
  --bg-color: #111111;
  --text-color: #ffffff;
  --text-secondary: #888888;
  --border-color: #333333;
  --accent-red: #d32f2f;
  --contact-red: #d33a3a;
  --control-radius: 12px;
  /* Kept for subtle highlights if needed */
  --tag-bg: #1a1a1a;
  --font-main: "Montserrat", sans-serif;
}

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

body {
  background-color: var(--bg-color);
  color: var(--text-color);
  font-family: var(--font-main);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

.loader-lock {
  overflow: hidden;
}

a {
  color: inherit;
  text-decoration: none;
  transition: opacity 0.3s;
}

a:hover {
  opacity: 0.7;
}

.site-loader {
  position: fixed;
  inset: 0;
  z-index: 9999;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 1rem;
  background:
    radial-gradient(
      circle at 20% 15%,
      rgba(211, 47, 47, 0.22) 0%,
      transparent 42%
    ),
    radial-gradient(
      circle at 80% 85%,
      rgba(255, 255, 255, 0.08) 0%,
      transparent 30%
    ),
    rgba(10, 10, 10, 0.96);
  transition:
    opacity 0.38s ease,
    visibility 0.38s ease;
}

.site-loader.is-hidden {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.butterfly-loader {
  position: relative;
  width: 4.2rem;
  height: 4.2rem;
  animation: loader-fly-core 1.8s linear infinite;
}

.butterfly-loader,
.butterfly-loader:before,
.butterfly-loader:after {
  animation-duration: 1.8s;
  animation-timing-function: linear;
  animation-iteration-count: infinite;
}

.butterfly-loader:before,
.butterfly-loader:after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 50%;
  transform-origin: 50% 100%;
  clip-path: polygon(0 0, 100% 0, 50% 100%);
}

.butterfly-loader:before {
  background: linear-gradient(135deg, #ff5a5a, #d32f2f);
  animation-name: loader-fly-left;
}

.butterfly-loader:after {
  background: linear-gradient(225deg, #ffffff, #a3a3a3);
  animation-name: loader-fly-right;
}

.butterfly-loader span {
  position: absolute;
  left: 50%;
  top: 42%;
  width: 0.35rem;
  height: 1.4rem;
  transform: translate(-50%, -50%);
  border-radius: 999px;
  background: linear-gradient(180deg, #f7f7f7, #8a8a8a);
  box-shadow: 0 0 15px rgba(255, 255, 255, 0.2);
}

.loader-text {
  font-size: 0.74rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-secondary);
}

@keyframes loader-fly-core {
  from,
  to {
    transform: translateY(0);
  }

  50% {
    transform: translateY(24%);
  }
}

@keyframes loader-fly-left {
  from,
  50%,
  to {
    transform: rotate(62deg);
  }

  25%,
  75% {
    transform: rotate(118deg);
  }
}

@keyframes loader-fly-right {
  from,
  50%,
  to {
    transform: rotate(298deg);
  }

  25%,
  75% {
    transform: rotate(242deg);
  }
}

/* Grid Layout wrapper */
.grid-container {
  max-width: 1600px;
  margin: 0 auto;
  border-left: 1px solid var(--border-color);
  border-right: 1px solid var(--border-color);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Header */
.site-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 2rem;
  border-bottom: 1px solid var(--border-color);
}

.logo {
  font-weight: 700;
  font-size: 1.2rem;
  letter-spacing: 2px;
}

nav {
  display: flex;
  gap: 2rem;
  align-items: center;
}

nav a {
  font-size: 0.9rem;
  text-transform: uppercase;
  font-weight: 500;
  letter-spacing: 1px;
}

.btn-contact {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--contact-red);
  background: linear-gradient(140deg, #d33a3a 0%, #b72a2a 100%);
  color: #ffffff;
  padding: 0.5rem 1.45rem;
  border-radius: var(--control-radius);
  box-shadow: 0 10px 24px rgba(211, 47, 47, 0.24);
  transition:
    transform 0.2s ease,
    box-shadow 0.2s ease,
    background 0.2s ease,
    border-color 0.2s ease;
}

.btn-contact:hover {
  background: linear-gradient(140deg, #de4343 0%, #c12b2b 100%);
  border-color: #de4343;
  color: #ffffff;
  transform: translateY(-1px);
  box-shadow: 0 12px 28px rgba(211, 47, 47, 0.3);
  opacity: 1;
}

/* Hero Section */
.hero-section {
  display: grid;
  grid-template-columns: 1fr 1fr;
  border-bottom: 1px solid var(--border-color);
  min-height: 60vh;
}

.hero-content {
  padding: 4rem;
  display: flex;
  flex-direction: column;
  justify-content: center;
  border-right: 1px solid var(--border-color);
}

.hero-content h1 {
  font-size: 4rem;
  font-weight: 300;
  line-height: 1.1;
  margin-bottom: 2rem;
  letter-spacing: -2px;
}

.hero-bio {
  font-size: 1.2rem;
  color: var(--text-secondary);
  max-width: 400px;
  margin-bottom: 2rem;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 210px;
  min-height: 52px;
  padding: 0.9rem 1.5rem;
  border: 1px solid #d95b5b;
  background: linear-gradient(140deg, #d33a3a 0%, #b72a2a 100%);
  color: #ffffff;
  border-radius: var(--control-radius);
  font-weight: 600;
  text-transform: none;
  font-size: 0.92rem;
  letter-spacing: 0.02em;
  white-space: nowrap;
  box-shadow: 0 10px 24px rgba(211, 47, 47, 0.24);
  transition:
    transform 0.2s ease,
    box-shadow 0.2s ease,
    background 0.2s ease,
    opacity 0.2s ease;
}

.btn-primary:hover {
  background: linear-gradient(140deg, #de4343 0%, #c12b2b 100%);
  color: #ffffff;
  transform: translateY(-1px);
  box-shadow: 0 12px 28px rgba(211, 47, 47, 0.3);
  opacity: 1;
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 210px;
  min-height: 52px;
  padding: 0.9rem 1.5rem;
  border: 1px solid rgba(255, 255, 255, 0.24);
  background: rgba(255, 255, 255, 0.04);
  color: #f2f2f2;
  border-radius: var(--control-radius);
  font-weight: 600;
  text-transform: none;
  font-size: 0.92rem;
  letter-spacing: 0.02em;
  white-space: nowrap;
  margin-left: 0;
  transition:
    transform 0.2s ease,
    border-color 0.2s ease,
    background-color 0.2s ease,
    color 0.2s ease,
    opacity 0.2s ease;
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.38);
  color: #ffffff;
  transform: translateY(-1px);
  opacity: 1;
}

.btn-primary:focus-visible,
.btn-secondary:focus-visible {
  outline: 2px solid #ffffff;
  outline-offset: 2px;
}

.hero-image-wrapper {
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: flex-end;
  /* Flush to bottom */
  justify-content: center;
  padding: 2rem 2rem 0 2rem;
  /* Remove bottom padding */
  background-color: #1a1a1a;
  /* Background handled by pseudo-element */
}

.hero-image-wrapper::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: url("../images/optimized/hero-bg-1280.jpg");
  background-image: image-set(
    url("../images/optimized/hero-bg-768.jpg") 1x,
    url("../images/optimized/hero-bg-1280.jpg") 1.5x,
    url("../images/optimized/hero-bg-1920.jpg") 2x
  );
  background-size: cover;
  background-position: center;
  filter: grayscale(100%);
  /* B&W by default */
  transition: filter 0.5s ease;
  /* Transition set to 0.5s */
  z-index: 1;
  opacity: 0.2;
  /* Darkened significantly */
}

.hero-image-wrapper:hover::before {
  filter: grayscale(0%);
}

.hero-image-link {
  position: relative;
  z-index: 2;
  /* Above background */
  display: block;
  width: 100%;
  max-width: 400px;
  transition: none;
  /* Disable opacity transition from generic 'a' */
}

.hero-image-link:hover {
  opacity: 1;
  /* Override global a:hover opacity */
}

.hero-image {
  width: 100%;
  height: auto;
  display: block;
  filter: grayscale(100%);
  /* Always B&W by default */
  transition: filter 0.5s ease;
  /* Add transition */
}

.hero-image-wrapper:hover .hero-image {
  filter: grayscale(0%);
  /* Color on hover */
}

/* Ticker */
.ticker-wrap {
  overflow: hidden;
  height: 4rem;
  background-color: var(--bg-color);
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
}

.ticker {
  display: flex;
  white-space: nowrap;
  animation: ticker 40s linear infinite;
  /* Slower, linear, infinite */
}

.ticker__item {
  font-size: 1rem;
  /* Smaller */
  padding: 0 4rem;
  font-weight: 400;
  /* Thinner */
  text-transform: uppercase;
  color: var(--text-secondary);
  letter-spacing: 2px;
}

@keyframes ticker {
  0% {
    transform: translateX(0);
  }

  100% {
    transform: translateX(-50%);
  }
}

/* Career Section */
.career-section {
  display: grid;
  grid-template-columns: 350px 1fr;
  border-bottom: 1px solid var(--border-color);
}

.section-header {
  padding: 3rem;
  border-right: 1px solid var(--border-color);
}

.section-header h2 {
  font-size: 2rem;
  margin-bottom: 1rem;
  font-weight: 400;
  text-transform: uppercase;
}

.section-subtitle {
  font-size: 0.8rem;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 2px;
}

.career-grid {
  display: grid;
  grid-template-columns: 1fr;
  /* Stack cards heavily */
}

.career-card {
  padding: 3rem;
  border-bottom: 1px solid var(--border-color);
  transition: background-color 0.3s;
}

.career-card:last-child {
  border-bottom: none;
}

.career-card:hover {
  background-color: #161616;
}

.job-date {
  display: inline-block;
  padding: 0.5rem 1rem;
  border: 1px solid var(--accent-red);
  color: var(--accent-red);
  border-radius: var(--control-radius);
  font-size: 0.8rem;
  margin-bottom: 1.5rem;
  font-family: monospace;
}

.career-card h3 {
  font-size: 1.8rem;
  margin-bottom: 1rem;
  font-weight: 500;
}

.job-role {
  font-size: 1.1rem;
  color: var(--accent-red);
  margin-bottom: 1rem;
  font-weight: 500;
}

.job-desc {
  list-style: none;
  color: var(--text-secondary);
  font-size: 1rem;
}

.job-desc li {
  margin-bottom: 0.5rem;
  position: relative;
  padding-left: 1.5rem;
}

.job-desc li:before {
  content: "—";
  position: absolute;
  left: 0;
  color: var(--border-color);
}

/* Cases Section */
.cases-section {
  display: grid;
  grid-template-columns: 350px 1fr;
  border-bottom: 1px solid var(--border-color);
}

.cases-content {
  border-left: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
}

/* Filter */
.cases-filter {
  padding: 2rem;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

.filter-btn {
  background: none;
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  padding: 0.5rem 1.5rem;
  border-radius: var(--control-radius);
  cursor: pointer;
  font-family: inherit;
  font-size: 0.9rem;
  transition: all 0.3s;
  text-transform: uppercase;
}

.filter-btn:hover,
.filter-btn.active {
  background-color: var(--text-color);
  color: var(--bg-color);
  border-color: var(--text-color);
}

/* Vertical Cases List */
.cases-list {
  display: flex;
  flex-direction: column;
}

.case-card {
  border-bottom: 1px solid var(--border-color);
  padding: 3rem;
  /* Larger padding for vertical layout */
  display: flex;
  gap: 2rem;
  align-items: center;
  position: relative;
  transition:
    background-color 0.25s ease,
    border-color 0.25s ease;
}

.case-card:last-child {
  border-bottom: none;
}

.case-card:hover {
  background-color: #161616;
}

.case-card.is-clickable-card {
  cursor: pointer;
  touch-action: manipulation;
}

.case-card.is-clickable-card:focus-visible {
  outline: 2px solid var(--accent-red);
  outline-offset: -2px;
}

.case-card.is-clickable-card .case-image {
  transition:
    transform 0.35s ease,
    filter 0.35s ease;
}

.case-card.is-clickable-card:hover .case-image,
.case-card.is-clickable-card:focus-visible .case-image {
  transform: scale(1.02);
  filter: saturate(1.08);
}

.case-card.is-clickable-card:hover .case-link,
.case-card.is-clickable-card:focus-visible .case-link {
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

.case-image {
  width: 300px;
  height: 200px;
  /* Fixed size for list view */
  flex-shrink: 0;
  border: 1px dashed var(--border-color);
  position: relative;
  overflow: hidden;
}

.case-image.placeholder {
  background-color: #222;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  font-size: 0.8rem;
}

.case-image.placeholder::after {
  content: "ИЗОБРАЖЕНИЕ";
  letter-spacing: 2px;
}

.case-image.preview {
  border-style: solid;
  background-size: cover;
  background-position: center;
}

.case-info {
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.case-meta {
  font-size: 0.8rem;
  color: var(--text-secondary);
  text-transform: uppercase;
  margin-bottom: 0.5rem;
  letter-spacing: 1px;
}

.case-info h3 {
  font-size: 2rem;
  margin-bottom: 1rem;
  font-weight: 500;
}

.case-desc {
  color: var(--text-secondary);
  font-size: 1rem;
  line-height: 1.6;
  margin-bottom: 1.5rem;
  max-width: 600px;
}

.case-link {
  font-size: 0.9rem;
  font-weight: 600;
  text-transform: uppercase;
  color: var(--accent-red);
  letter-spacing: 1px;
  display: inline-block;
}

.case-link:hover {
  opacity: 0.8;
}

@media (prefers-reduced-motion: reduce) {
  .case-card,
  .case-card.is-clickable-card .case-image {
    transition: none;
  }
}

/* Responsive Cases */
@media (max-width: 1024px) {
  .case-card {
    flex-direction: column;
    align-items: flex-start;
  }

  .case-image {
    width: 100%;
    height: auto;
    aspect-ratio: 16/9;
  }
}

/* Split Section (Skills & Education) */
.split-section {
  display: grid;
  grid-template-columns: 1fr 1fr;
  border-bottom: 1px solid var(--border-color);
}

.skills-block,
.education-block {
  padding: 3rem;
}

.skills-block {
  border-right: 1px solid var(--border-color);
}

.block-header h2 {
  font-size: 1.5rem;
  margin-bottom: 2rem;
  text-transform: uppercase;
  font-weight: 700;
}

.skills-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

.skills-tags span {
  background-color: var(--tag-bg);
  /* Darker block */
  color: var(--text-color);
  padding: 0.8rem 1.5rem;
  border-radius: var(--control-radius);
  /* Pill shape */
  font-size: 0.9rem;
  transition: all 0.2s;
}

.skills-tags.soft-tags span {
  background-color: transparent;
  border: 1px solid var(--border-color);
}

.skills-tags span:hover {
  background-color: var(--accent-red);
  border-color: var(--accent-red);
  color: white;
}

/* Education Card */
.education-card {
  border: 1px solid var(--border-color);
  padding: 2rem;
  border-radius: 20px;
}

.edu-date {
  background-color: var(--accent-red);
  color: white;
  display: inline-block;
  padding: 0.3rem 1rem;
  border-radius: var(--control-radius);
  font-size: 0.8rem;
  margin-bottom: 1rem;
}

.education-card h3 {
  font-size: 1.5rem;
  margin-bottom: 0.5rem;
}

.education-card p {
  color: var(--text-secondary);
}
/* About Section */
.about-section {
  padding: 6rem 2rem;
  border-bottom: 1px solid var(--border-color);
}

.about-content {
  max-width: 800px;
  margin: 0 auto;
  text-align: center;
}

.about-content h2 {
  font-size: 2rem;
  margin-bottom: 2rem;
  font-weight: 300;
  letter-spacing: 2px;
}

.about-text p {
  font-size: 1.1rem;
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
  line-height: 1.8;
}

/* Hero Buttons Container */
.hero-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
  align-items: center;
}

/* Burger Menu Styles */
.burger-menu {
  display: none;
  flex-direction: column;
  gap: 6px;
  background: none;
  border: none;
  cursor: pointer;
  z-index: 101;
}

.burger-menu span {
  display: block;
  width: 30px;
  height: 2px;
  background-color: var(--text-color);
  transition: all 0.3s;
}

/* Header Active State (Mobile Menu Open) */
.site-header.active .burger-menu span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 6px);
}

.site-header.active .burger-menu span:nth-child(2) {
  opacity: 0;
}

.site-header.active .burger-menu span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -6px);
}

.no-scroll {
  overflow: hidden;
}

/* Responsive */
@media (max-width: 1024px) {
  .container {
    border: none;
  }

  .hero-section {
    grid-template-columns: 1fr;
    min-height: auto;
  }

  .hero-content {
    border-right: none;
    border-bottom: 1px solid var(--border-color);
    padding: 3rem 2rem;
    /* Adjusted padding */
  }

  .hero-buttons {
    flex-direction: column;
    width: 100%;
  }

  .btn-primary,
  .btn-secondary {
    width: 100%;
    text-align: center;
    margin-left: 0;
    min-width: 0;
  }

  .career-section,
  .cases-section {
    grid-template-columns: 1fr;
  }

  .section-header {
    border-right: none;
    border-bottom: 1px solid var(--border-color);
    padding: 2rem;
  }

  .split-section {
    grid-template-columns: 1fr;
  }

  .skills-block {
    border-right: none;
    border-bottom: 1px solid var(--border-color);
  }

  .cases-content {
    border-left: none;
    width: 100%;
  }
}

@media (max-width: 768px) {
  .site-header {
    padding: 1.5rem;
    position: relative;
  }

  .burger-menu {
    display: flex;
  }

  .site-nav {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    background-color: var(--bg-color);
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 2rem;
    transform: translateY(-100%);
    transition: transform 0.3s ease-in-out;
    z-index: 100;
  }

  .site-header.active .site-nav {
    transform: translateY(0);
  }

  .nav-link {
    font-size: 1.5rem;
  }

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

  .hero-image-wrapper {
    width: 100%;
    max-width: 100%;
    aspect-ratio: 1 / 1;
    /* Square container */
    padding-top: 2rem;
    align-items: flex-end;
    /* Align image to bottom */
    position: relative;
  }

  .hero-image-wrapper::before {
    background-size: cover;
    /* Fill width and height */
    background-position: center;
  }

  .hero-image-link {
    width: 100%;
    height: 100%;
    /* Fill container height to respect align-items */
    display: flex;
    align-items: flex-end;
    /* Ensure image sits at bottom */
    justify-content: center;
  }

  .hero-image {
    width: auto;
    max-width: 100%;
    height: auto;
    max-height: 100%;
    /* Fit within container */
    object-fit: contain;
  }
}