/* ============================================
   1. Reset / Base
   ============================================ */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  min-height: 100vh;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

ul {
  list-style: none;
}

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

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

/* ============================================
   2. CSS Custom Properties
   ============================================ */
:root {
  /* Colors — light editorial palette */
  --color-bg: #ffffff;
  --color-surface: #f5f5f5;
  --color-text: #1a1a1a;
  --color-text-muted: #666666;
  --color-accent: #333333;
  --color-border: #e0e0e0;
  --color-link-hover: #000000;

  /* Fonts — newspaper: all Times New Roman */
  --font-serif: 'Times New Roman', Times, serif;
  --font-sans: 'Times New Roman', Times, serif;

  /* Type Scale — reduced for newspaper feel */
  --text-xs: 0.6875rem;
  --text-sm: 0.75rem;
  --text-base: 0.875rem;
  --text-lg: 1rem;
  --text-xl: 1.125rem;
  --text-2xl: 1.375rem;
  --text-3xl: 1.75rem;
  --text-4xl: 2.25rem;
  --text-5xl: 3rem;

  /* Spacing */
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2rem;
  --space-xl: 3rem;
  --space-2xl: 4rem;
  --space-3xl: 6rem;
  --space-4xl: 8rem;

  /* Layout */
  --container-max: 1100px;
  --container-padding: var(--space-md);

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 300ms ease;
  --transition-slow: 500ms ease;

  /* Z-index */
  --z-nav: 100;
  --z-overlay: 90;
  --z-skip: 200;
}

/* ============================================
   3. Typography
   ============================================ */
body {
  font-family: var(--font-sans);
  font-size: var(--text-base);
  color: var(--color-text);
  background-color: var(--color-bg);
}

h1, h2, h3 {
  font-family: var(--font-serif);
  font-weight: 400;
  line-height: 1.2;
  color: var(--color-text);
}

h1 {
  font-size: clamp(var(--text-3xl), 4vw, var(--text-5xl));
  letter-spacing: -0.01em;
}

h2 {
  font-size: clamp(var(--text-2xl), 3vw, var(--text-3xl));
}

h3 {
  font-size: var(--text-xl);
}

p {
  max-width: 65ch;
  margin-bottom: var(--space-sm);
  line-height: 1.7;
}

p:last-child {
  margin-bottom: 0;
}

a {
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--color-link-hover);
}

figcaption {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  margin-top: var(--space-xs);
  line-height: 1.5;
}

/* ============================================
   4. Layout Utilities
   ============================================ */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding-left: var(--container-padding);
  padding-right: var(--container-padding);
}

.section {
  padding-top: var(--space-3xl);
  padding-bottom: var(--space-3xl);
}

/* Skip Link */
.skip-link {
  position: fixed;
  top: -100%;
  left: var(--space-sm);
  background: var(--color-text);
  color: var(--color-bg);
  padding: var(--space-xs) var(--space-sm);
  z-index: var(--z-skip);
  font-size: var(--text-sm);
  transition: top var(--transition-fast);
}

.skip-link:focus {
  top: var(--space-sm);
}

/* ============================================
   5. Navigation
   ============================================ */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-nav);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-md) var(--container-padding);
  background-color: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
  transition: background-color var(--transition-base);
}

.site-logo {
  font-family: var(--font-serif);
  font-size: var(--text-lg);
  font-weight: 400;
  letter-spacing: 0.01em;
  white-space: nowrap;
  color: var(--color-text);
}

.site-logo__descriptor {
  display: block;
  font-family: var(--font-sans);
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--color-text-muted);
  margin-top: 2px;
}

.nav-list {
  display: flex;
  gap: var(--space-lg);
}

.nav-list a {
  font-size: var(--text-sm);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-text-muted);
  transition: color var(--transition-fast);
}

.nav-list a:hover {
  color: var(--color-text);
}

/* Hamburger */
.nav-toggle {
  display: none;
  width: 24px;
  height: 18px;
  position: relative;
  z-index: calc(var(--z-nav) + 1);
}

.hamburger,
.hamburger::before,
.hamburger::after {
  display: block;
  width: 100%;
  height: 2px;
  background-color: var(--color-text);
  position: absolute;
  transition: transform var(--transition-base), opacity var(--transition-fast);
}

.hamburger {
  top: 50%;
  transform: translateY(-50%);
}

.hamburger::before {
  content: '';
  top: -7px;
}

.hamburger::after {
  content: '';
  bottom: -7px;
}

/* Nav open state */
.nav-open .hamburger {
  background-color: transparent;
}

.nav-open .hamburger::before {
  top: 0;
  transform: rotate(45deg);
}

.nav-open .hamburger::after {
  bottom: 0;
  transform: rotate(-45deg);
}

/* Homepage transparent nav — no border, sits over hero */
.page-home .site-header {
  background-color: transparent;
  border-bottom-color: transparent;
}

.page-home .site-header .site-logo,
.page-home .site-header .nav-list a,
.page-home .site-header .hamburger,
.page-home .site-header .hamburger::before,
.page-home .site-header .hamburger::after {
  color: #ffffff;
  background-color: #ffffff;
}

.page-home .site-header .site-logo,
.page-home .site-header .nav-list a {
  background-color: transparent;
}

.page-home .site-header .site-logo__descriptor {
  color: rgba(255, 255, 255, 0.7);
}

.page-home .site-header .nav-list a:hover {
  color: #ffffff;
  opacity: 0.7;
}

/* ============================================
   6. Page: Home — Hero
   ============================================ */
.hero {
  position: relative;
  width: 100%;
  height: 100vh;
  overflow: hidden;
}

.hero__image {
  width: 100%;
  height: 100vh;
  object-fit: cover;
}

.hero__overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: var(--space-2xl) var(--container-padding);
  background: linear-gradient(transparent, rgba(0, 0, 0, 0.55));
}

.hero__title {
  font-family: var(--font-serif);
  font-size: clamp(var(--text-4xl), 6vw, var(--text-5xl));
  font-weight: 400;
  color: #ffffff;
  margin-bottom: var(--space-xs);
  animation: fadeInUp 0.8s ease forwards;
  opacity: 0;
}

.hero__subtitle {
  font-size: var(--text-sm);
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: rgba(255, 255, 255, 0.7);
  animation: fadeInUp 0.8s ease 0.25s forwards;
  opacity: 0;
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(16px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ============================================
   7. Page: Projects Grid
   ============================================ */
.projects-header {
  padding-top: calc(70px + var(--space-2xl));
  padding-bottom: var(--space-lg);
}

.projects-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-2xl);
  padding-bottom: var(--space-3xl);
}

.project-card {
  display: block;
  overflow: hidden;
  position: relative;
}

.project-card__image-wrap {
  overflow: hidden;
  line-height: 0;
}

.project-card__image {
  width: 100%;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  transition: transform var(--transition-slow), opacity var(--transition-base);
}

.project-card:hover .project-card__image {
  transform: scale(1.02);
  opacity: 0.9;
}

.project-card__info {
  padding: var(--space-sm) 0;
}

.project-card__title {
  font-family: var(--font-serif);
  font-size: var(--text-xl);
  transition: color var(--transition-fast);
}

.project-card:hover .project-card__title {
  color: var(--color-accent);
}

.project-card__year {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  margin-top: 2px;
}

/* ============================================
   8. Page: Project Single — Horizontal Gallery
   ============================================ */
.gallery {
  display: flex;
  height: calc(100vh - 57px);
  margin-top: 57px;
  overflow: hidden;
}

.gallery__viewer {
  flex: 1 1 75%;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #ffffff;
  overflow: hidden;
}

.gallery__image {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
  transition: opacity 0.3s ease;
}

.gallery__image.is-fading {
  opacity: 0;
}

.gallery__prev,
.gallery__next {
  position: absolute;
  top: 0;
  bottom: 0;
  width: 15%;
  min-width: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  color: rgba(0, 0, 0, 0.3);
  background: transparent;
  border: none;
  cursor: pointer;
  transition: color var(--transition-fast);
  z-index: 2;
  user-select: none;
}

.gallery__prev {
  left: 0;
  padding-left: var(--space-sm);
  justify-content: flex-start;
}

.gallery__next {
  right: 0;
  padding-right: var(--space-sm);
  justify-content: flex-end;
}

.gallery__prev:hover,
.gallery__next:hover {
  color: rgba(0, 0, 0, 0.7);
}

.gallery__sidebar {
  flex: 0 0 25%;
  max-width: 320px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: var(--space-xl) var(--space-lg);
  border-left: 1px solid var(--color-border);
  overflow-y: auto;
}

.gallery__title {
  font-family: var(--font-serif);
  font-size: var(--text-lg);
  font-weight: 400;
  margin-bottom: var(--space-sm);
  line-height: 1.3;
}

.gallery__description {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  line-height: 1.7;
  margin-bottom: var(--space-lg);
}

.gallery__counter {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  letter-spacing: 0.1em;
  margin-bottom: var(--space-lg);
}

.project-back-link {
  display: inline-block;
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-text-muted);
  transition: color var(--transition-fast);
  margin-top: auto;
}

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

/* Fade-in on scroll */
.fade-in {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* ============================================
   9. Page: About
   ============================================ */
.about-layout {
  padding-top: calc(70px + var(--space-2xl));
  padding-bottom: var(--space-3xl);
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-2xl);
}

.about-portrait img {
  width: 100%;
  height: auto;
}

.about-bio h1 {
  margin-bottom: var(--space-lg);
}

.about-bio p {
  color: var(--color-text-muted);
  line-height: 1.8;
  margin-bottom: var(--space-md);
}

.about-section {
  margin-top: var(--space-2xl);
  padding-top: var(--space-lg);
  border-top: 1px solid var(--color-border);
}

.about-section h2 {
  font-size: var(--text-lg);
  margin-bottom: var(--space-sm);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-family: var(--font-sans);
  font-weight: 500;
  font-size: var(--text-sm);
}

.about-section ul {
  color: var(--color-text-muted);
  line-height: 2;
}

.about-section li::before {
  content: '\2014\00a0';
  color: var(--color-border);
}

/* ============================================
   10. Page: Contact
   ============================================ */
.contact-layout {
  padding-top: calc(70px + var(--space-2xl));
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
}

.contact-layout h1 {
  margin-bottom: var(--space-2xl);
}

.contact-email {
  font-family: var(--font-serif);
  font-size: clamp(var(--text-xl), 3vw, var(--text-3xl));
  display: block;
  margin-bottom: var(--space-lg);
  color: var(--color-text);
  transition: color var(--transition-fast);
}

.contact-email:hover {
  color: var(--color-text-muted);
}

.contact-social {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  transition: color var(--transition-fast);
}

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

/* ============================================
   11. Footer
   ============================================ */
.site-footer {
  border-top: 1px solid var(--color-border);
  padding: var(--space-lg) var(--container-padding);
  text-align: center;
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  letter-spacing: 0.05em;
}

/* ============================================
   12. Responsive Overrides
   ============================================ */

/* ------ Mobile (max 1023px) ------ */
@media (max-width: 1023px) {
  .nav-toggle {
    display: block;
  }

  .nav-list {
    display: flex;
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    width: 280px;
    background-color: var(--color-bg);
    border-left: 1px solid var(--color-border);
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: var(--space-xl);
    transform: translateX(100%);
    transition: transform var(--transition-base);
    z-index: var(--z-overlay);
  }

  .nav-open .nav-list {
    transform: translateX(0);
  }

  .nav-list a {
    font-size: var(--text-base);
    color: var(--color-text) !important;
  }

  /* Gallery: stack vertically on mobile */
  .gallery {
    flex-direction: column;
    height: auto;
    min-height: calc(100vh - 57px);
  }

  .gallery__viewer {
    width: 100%;
    height: 60vh;
    flex: none;
  }

  .gallery__prev,
  .gallery__next {
    top: auto;
    bottom: 0;
    width: auto;
    height: 48px;
    padding: 0 var(--space-md);
  }

  .gallery__prev {
    left: 0;
    right: auto;
  }

  .gallery__next {
    right: 0;
    left: auto;
  }

  .gallery__sidebar {
    flex: none;
    max-width: none;
    border-left: none;
    border-top: 1px solid var(--color-border);
    padding: var(--space-md) var(--container-padding);
  }
}

/* ------ Tablet (640px+) ------ */
@media (min-width: 640px) {
  :root {
    --container-padding: var(--space-lg);
  }

  .projects-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-lg);
  }
}

/* ------ Desktop (1024px+) ------ */
@media (min-width: 1024px) {
  :root {
    --container-padding: var(--space-xl);
  }

  .about-layout {
    grid-template-columns: 2fr 3fr;
    gap: var(--space-3xl);
  }
}

/* ------ Wide (1400px+) ------ */
@media (min-width: 1400px) {
  :root {
    --container-max: 1300px;
  }
}