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

:root {
  --color-bg: #fff;
  --color-text: #555;
  --color-text-dark: #333;
  --color-text-light: #999;
  --color-border: #ddd;
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --ease: cubic-bezier(0.4, 0, 0.2, 1);
  --name-padding-top: 40px;
  --name-padding-left: 40px;
}

html, body {
  height: 100%;
  overflow: hidden;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  font-weight: 300;
  font-size: 14px;
  line-height: 1.6;
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

button {
  font: inherit;
  border: none;
  background: none;
  cursor: pointer;
  color: inherit;
}

ul {
  list-style: none;
}

/* ===== Menu Overlay ===== */
.menu-overlay {
  position: fixed;
  inset: 0;
  z-index: 490;
  background: #fff;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s var(--ease);
}

.menu-overlay.open {
  opacity: 1;
  pointer-events: auto;
}

/* ===== Site Name + Dropdown Menu ===== */
.site-name-wrap {
  position: fixed;
  top: var(--name-padding-top);
  left: var(--name-padding-left);
  z-index: 500;
}

.site-name {
  font-family: var(--font-sans);
  font-size: 22px;
  font-weight: 400;
  color: var(--color-text-dark);
  cursor: pointer;
  user-select: none;
  transition: color 0.3s var(--ease);
  letter-spacing: 0.01em;
}

.site-name:hover {
  color: #000;
}

.site-name--on-image {
  color: #fff;
}

.site-name--on-image:hover {
  color: rgba(255, 255, 255, 0.7);
}

.dropdown-menu {
  display: none;
  flex-direction: column;
  gap: 4px;
  padding-top: 12px;
}

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

.dropdown-menu__link {
  font-family: var(--font-sans);
  font-size: 18px;
  font-weight: 300;
  color: var(--color-text);
  transition: color 0.3s var(--ease);
  letter-spacing: 0.01em;
  line-height: 1.6;
}

.dropdown-menu__link:hover {
  color: #000;
}



/* ===== Screens ===== */
.screen {
  position: fixed;
  inset: 0;
  display: none;
  background: var(--color-bg);
  opacity: 0;
  transition: opacity 0.4s var(--ease);
}

.screen.active {
  display: flex;
  opacity: 1;
}

.screen.fade-in {
  display: flex;
  opacity: 0;
}

/* ===== Screen: Home (fullscreen slider) ===== */
.screen--home {
  z-index: 10;
  background: #000;
}

.home-slider {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
}

.home-slider__slide {
  position: absolute;
  inset: 0;
  opacity: 0;
  transition: opacity 0.6s var(--ease);
}

.home-slider__slide.active {
  opacity: 1;
}

.home-slider__slide img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  user-select: none;
  -webkit-user-drag: none;
}

.slider-arrow {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  z-index: 20;
  color: rgba(255, 255, 255, 0.7);
  padding: 20px;
  transition: color 0.3s var(--ease);
}

.slider-arrow:hover {
  color: #fff;
}

.slider-arrow--left {
  left: 16px;
}

.slider-arrow--right {
  right: 16px;
}


/* ===== Right-aligned content layout ===== */
.right-content {
  margin-left: 40%;
  padding: 0 60px 80px 0;
}

.right-content--scroll {
  position: absolute;
  inset: 0;
  overflow-y: auto;
  overflow-x: hidden;
  -webkit-overflow-scrolling: touch;
}

.right-content--scroll > .right-content {
  margin-left: 0;
  padding: 0;
}

.right-content--scroll {
  padding-left: 28%;
  padding-right: 40px;
  padding-top: 120px;
  padding-bottom: 80px;
}

/* ===== Screen: Projects list ===== */
.screen--projects {
  z-index: 10;
}

.projects-list {
  display: flex;
  flex-direction: column;
  gap: 48px;
}

.project-item {
  cursor: pointer;
  transition: opacity 0.3s var(--ease);
}

.project-item:hover {
  opacity: 0.7;
}

.project-item__image {
  width: 100%;
  max-width: 400px;
  margin-bottom: 12px;
  overflow: hidden;
}

.project-item__image img {
  width: 100%;
  display: block;
}

.project-item__title {
  font-family: var(--font-sans);
  font-size: 18px;
  font-weight: 400;
  color: var(--color-text-dark);
  margin-bottom: 4px;
  letter-spacing: 0.01em;
}

.project-item__meta {
  font-family: var(--font-sans);
  font-size: 13px;
  font-weight: 300;
  color: var(--color-text-light);
  letter-spacing: 0.02em;
}

/* ===== Screen: Single Project ===== */
.screen--project {
  z-index: 10;
  overflow-y: auto;
  overflow-x: hidden;
  -webkit-overflow-scrolling: touch;
}

.screen--project.active {
  display: block;
}

.project-page {
  min-height: 100%;
}

.project-page__nav {
  padding: var(--name-padding-top) 0 0;
  margin-left: 40%;
  padding-right: 60px;
}

.back-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-sans);
  font-size: 13px;
  font-weight: 300;
  color: var(--color-text-light);
  letter-spacing: 0.02em;
  transition: color 0.3s var(--ease);
}

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

.project-page__header {
  margin-left: 40%;
  padding: 40px 60px 40px 0;
}

.project-page__title {
  font-family: var(--font-sans);
  font-size: clamp(24px, 3vw, 36px);
  font-weight: 300;
  color: var(--color-text-dark);
  line-height: 1.2;
  letter-spacing: -0.01em;
  margin-bottom: 8px;
}

.project-page__meta {
  font-family: var(--font-sans);
  font-size: 15px;
  font-weight: 300;
  color: var(--color-text-light);
  letter-spacing: 0.02em;
}

.project-page__slider {
  position: relative;
  margin-left: 40%;
  width: 60%;
  height: 70vh;
  min-height: 400px;
  background: #fff;
  display: flex;
  align-items: center;
  justify-content: flex-start;
}

.project-slider {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: flex-start;
}

.project-slider__slide {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: flex-start;
  opacity: 0;
  transition: opacity 0.5s var(--ease);
  padding: 40px;
}

.project-slider__slide.active {
  opacity: 1;
}

.project-slider__slide img {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
  user-select: none;
  -webkit-user-drag: none;
}

.slider-arrow--project {
  z-index: 30;
  color: var(--color-text-light);
}

.slider-arrow--project:hover {
  color: var(--color-text-dark);
}

.slider-expand {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  z-index: 25;
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-light);
  opacity: 0;
  transition: opacity 0.3s var(--ease), color 0.3s var(--ease);
  cursor: pointer;
}

.project-page__slider:hover .slider-expand {
  opacity: 1;
}

.slider-expand:hover {
  color: var(--color-text-dark);
}

.project-slider__counter {
  position: absolute;
  bottom: 16px;
  right: 24px;
  font-family: var(--font-sans);
  font-size: 12px;
  font-weight: 300;
  color: var(--color-text-light);
  letter-spacing: 0.1em;
}

/* ===== Fullscreen Slider Overlay ===== */
.fullscreen-slider {
  position: fixed;
  inset: 0;
  z-index: 9999;
  background: #fff;
  display: none;
  align-items: center;
  justify-content: flex-start;
}

.fullscreen-slider.open {
  display: flex;
}

.fullscreen-slider__slides {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: flex-start;
}

.fullscreen-slider__slide {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: flex-start;
  opacity: 0;
  transition: opacity 0.5s var(--ease);
  padding: 60px;
}

.fullscreen-slider__slide.active {
  opacity: 1;
}

.fullscreen-slider__slide img {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
  user-select: none;
  -webkit-user-drag: none;
}

.slider-arrow--fullscreen {
  color: var(--color-text-light);
}

.slider-arrow--fullscreen:hover {
  color: var(--color-text-dark);
}

.fullscreen-slider__close {
  position: absolute;
  top: 32px;
  right: 32px;
  z-index: 1010;
  color: var(--color-text-light);
  padding: 12px;
  transition: color 0.3s var(--ease);
  cursor: pointer;
}

.fullscreen-slider__close:hover {
  color: var(--color-text-dark);
}

.fullscreen-slider__counter {
  position: absolute;
  bottom: 24px;
  right: 32px;
  font-family: var(--font-sans);
  font-size: 13px;
  font-weight: 300;
  color: var(--color-text-light);
  letter-spacing: 0.1em;
}

.project-page__text {
  padding: 60px 0 100px;
}

.project-page__text .right-content {
  padding-right: 60px;
}

.project-page__description {
  font-family: var(--font-sans);
  font-size: 16px;
  font-weight: 300;
  line-height: 1.8;
  color: var(--color-text);
  max-width: 640px;
}

.project-page__description p {
  margin-bottom: 20px;
}

.project-page__description p:last-child {
  margin-bottom: 0;
}

.project-page__plan {
  display: inline-block;
  margin-top: 32px;
  font-family: var(--font-sans);
  font-size: 14px;
  font-weight: 300;
  color: var(--color-text-light);
  letter-spacing: 0.02em;
  padding-bottom: 2px;
  border-bottom: 1px solid var(--color-border);
  transition: color 0.3s var(--ease), border-color 0.3s var(--ease);
}

.project-page__plan:hover {
  color: var(--color-text-dark);
  border-color: var(--color-text-dark);
}

.project-page__plan.hidden {
  display: none;
}

/* ===== Screen: About ===== */
.screen--about {
  z-index: 10;
}

.about-content {
  max-width: none;
}

.about-content__photo-placeholder {
  width: 100%;
  aspect-ratio: 3 / 2;
  background: #f0f0f0;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 48px;
}

.about-content__photo-placeholder span {
  font-family: var(--font-sans);
  font-size: 14px;
  font-weight: 300;
  color: var(--color-text-light);
  letter-spacing: 0.02em;
}

.about-content blockquote {
  margin: 0 0 48px;
  padding-left: 24px;
  border-left: 1px solid var(--color-text-dark);
  font-family: var(--font-sans);
  font-size: 20px;
  font-weight: 300;
  line-height: 1.6;
  color: var(--color-text-dark);
}

.about-content p {
  font-family: var(--font-sans);
  font-size: 16px;
  font-weight: 300;
  line-height: 1.8;
  color: var(--color-text);
  margin-bottom: 24px;
}

/* ===== Screen: Contact ===== */
.screen--contact {
  z-index: 10;
}

.contact-content {
  display: flex;
  flex-direction: column;
  gap: 40px;
}

.contact-content__group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.contact-content__label {
  font-family: var(--font-sans);
  font-size: 13px;
  font-weight: 400;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-text-light);
}

.contact-content__value {
  font-family: var(--font-sans);
  font-size: 22px;
  font-weight: 300;
  color: var(--color-text-dark);
  transition: color 0.3s var(--ease);
  word-break: break-word;
}

a.contact-content__value:hover {
  color: #000;
}

/* ===== Responsive ===== */
@media (max-width: 900px) {
  :root {
    --name-padding-top: 24px;
    --name-padding-left: 24px;
  }

  .right-content--scroll {
    padding-left: 24px;
    padding-right: 24px;
    padding-top: 100px;
  }

  .right-content {
    margin-left: 0;
    padding-right: 0;
  }

  .project-page__nav {
    margin-left: 0;
    padding-left: 24px;
    padding-right: 24px;
  }

  .project-page__header {
    margin-left: 0;
    padding: 32px 24px;
  }

  .project-page__text .right-content {
    margin-left: 0;
    padding: 0 24px;
  }

  .project-slider__slide {
    padding: 20px;
  }

  .project-page__slider {
    margin-left: 0;
    width: 100%;
    height: 50vh;
    min-height: 280px;
  }

  .slider-arrow {
    padding: 12px;
  }

  .slider-arrow--left {
    left: 4px;
  }

  .slider-arrow--right {
    right: 4px;
  }

  .project-item__image {
    max-width: 100%;
  }

  .fullscreen-slider__slide {
    padding: 20px;
  }

  .fullscreen-slider__close {
    top: 16px;
    right: 16px;
  }

  .fullscreen-slider__counter {
    bottom: 16px;
    right: 16px;
  }

  .contact-content__value {
    font-size: 22px;
  }

  .about-content blockquote {
    font-size: 17px;
  }

  .about-content p {
    font-size: 15px;
  }

  .project-page__description {
    font-size: 15px;
  }
}