/* ============================================================
   CONCRETE VISIONS — Brutalist Architecture Photography Portfolio
   Dark, minimal, photography-forward. Inspired by londonisbrutal.com
   ============================================================ */

/* --- Design Tokens --- */
:root {
  --black: #e8e8e8;
  --white: #1a1a1a;
  --gray-100: #2a2a2a;
  --gray-200: #333333;
  --gray-400: #555555;
  --gray-600: #8a8a8a;
  --gray-800: #cccccc;
  --gray-900: #e0e0e0;
  --accent: #b8a88a;
  --accent-dim: #8a7d6a;

  --font-display: 'Archivo Black', sans-serif;
  --font-body: 'Barlow', sans-serif;

  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 3rem;
  --space-xl: 5rem;
  --space-2xl: 8rem;

  --transition: 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --transition-slow: 0.6s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}


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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-body);
  font-weight: 300;
  background-color: var(--black);
  color: var(--gray-200);
  line-height: 1.6;
  overflow-x: hidden;
}

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

a {
  color: var(--white);
  text-decoration: none;
  transition: color var(--transition);
}

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

::selection {
  background: var(--accent);
  color: var(--black);
}


/* --- Header / Navigation --- */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: var(--space-xl) var(--space-lg);
  background: transparent;
  pointer-events: none;
}

.site-nav {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: var(--space-md);
  pointer-events: auto;
}

.site-title {
  font-family: var(--font-display);
  font-size: 1.25rem;
  line-height: 1.2;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--white);
}



.nav-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.nav-links a {
  font-family: var(--font-body);
  font-weight: 400;
  font-size: 0.8rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--gray-400);
  position: relative;
  padding-bottom: 2px;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--accent);
  transition: width var(--transition);
}

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

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


/* --- Carousel (Homepage) --- */
.carousel {
  position: relative;
  max-width: 900px;
  margin: var(--space-xl) auto var(--space-md);
  overflow: hidden;
  padding-bottom: var(--space-sm);
  border-bottom: 1px solid var(--gray-800);
}

.carousel-track {
  position: relative;
  aspect-ratio: 4 / 3;
}

.carousel-slide {
  position: absolute;
  inset: 0;
  opacity: 0;
  transform: translateX(0);
}

.carousel-slide.is-active {
  opacity: 1;
  z-index: 1;
}

.carousel-slide.slide-out-left {
  opacity: 1;
  z-index: 2;
  animation: slideOutLeft 0.6s ease forwards;
}

.carousel-slide.slide-out-right {
  opacity: 1;
  z-index: 2;
  animation: slideOutRight 0.6s ease forwards;
}

.carousel-slide.slide-in-right {
  animation: slideInRight 0.6s ease forwards;
}

.carousel-slide.slide-in-left {
  animation: slideInLeft 0.6s ease forwards;
}

@keyframes slideOutLeft {
  to { transform: translateX(-100%); opacity: 0; }
}

@keyframes slideOutRight {
  to { transform: translateX(100%); opacity: 0; }
}

@keyframes slideInRight {
  from { transform: translateX(100%); opacity: 0; }
  to { transform: translateX(0); opacity: 1; }
}

@keyframes slideInLeft {
  from { transform: translateX(-100%); opacity: 0; }
  to { transform: translateX(0); opacity: 1; }
}

.carousel-slide img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: grayscale(20%) brightness(0.85);
}

.carousel-arrow {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  z-index: 10;
  background: none;
  border: none;
  color: rgba(255, 255, 255, 0.7);
  font-size: 3rem;
  cursor: pointer;
  transition: color var(--transition);
  padding: var(--space-sm);
  line-height: 1;
}

.carousel-arrow:hover {
  color: var(--white);
}

.carousel-arrow--prev {
  left: 0;
}

.carousel-arrow--next {
  right: 0;
}

.carousel-caption {
  position: absolute;
  bottom: var(--space-md);
  left: var(--space-md);
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.carousel-title {
  font-family: var(--font-body);
  font-weight: 500;
  font-size: 0.85rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--white);
}

.carousel-location {
  font-family: var(--font-body);
  font-weight: 300;
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  color: var(--gray-400);
}


/* --- Section Headings --- */
.section-heading {
  font-family: var(--font-display);
  font-size: clamp(1.2rem, 2.5vw, 1.6rem);
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--gray-400);
  margin-bottom: var(--space-xl);
  position: relative;
  padding-bottom: var(--space-sm);
}

.section-heading::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 3rem;
  height: 1px;
  background: var(--accent);
}


/* --- Series List Page --- */
.series-list-page {
  padding: calc(var(--space-2xl) + 2rem) var(--space-lg) 0;
}

.series-list-header {
  max-width: 1600px;
  margin: 0 auto var(--space-xl);
}

.page-title {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 6vw, 5rem);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--white);
  line-height: 1;
  margin-bottom: var(--space-sm);
}

.page-subtitle {
  font-size: 0.85rem;
  font-weight: 300;
  letter-spacing: 0.1em;
  color: var(--gray-400);
  text-transform: uppercase;
}

.series-list-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-md);
  max-width: 900px;
  margin: 0 auto var(--space-md);
  padding-bottom: var(--space-sm);
  border-bottom: 1px solid var(--gray-800);
}

.series-list-item {
  display: block;
  text-decoration: none;
}

.series-list-img {
  overflow: hidden;
  aspect-ratio: 4 / 3;
  margin-bottom: var(--space-xs);
  position: relative;
  background: var(--gray-900);
}

.series-list-img::after {
  content: '';
  position: absolute;
  inset: 0;
  border: 1px solid rgba(255, 255, 255, 0);
  transition: border-color var(--transition);
  pointer-events: none;
}

.series-list-item:hover .series-list-img::after {
  border-color: rgba(255, 255, 255, 0.1);
}

.series-list-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow), filter var(--transition);
  filter: grayscale(30%) brightness(0.9);
}

.series-list-item:hover .series-list-img img {
  transform: scale(1.05);
  filter: grayscale(0%) brightness(1);
}

.series-list-meta {
  padding: var(--space-xs) 0;
}

.series-list-title {
  font-family: var(--font-display);
  font-size: 0.85rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--white);
}

.series-list-location {
  display: block;
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--gray-400);
  margin-top: 0.15rem;
  text-align: center;
}


/* --- Series Single Page --- */
.series-page {
  padding: var(--space-xl) var(--space-lg) 0;
}



.series-grid {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  max-width: 900px;
  margin: 0 auto var(--space-md);
  padding-bottom: var(--space-sm);
  border-bottom: 1px solid var(--gray-800);
}

.series-figure img {
  width: 100%;
  object-fit: cover;
}

.series-fullname {
  font-family: var(--font-display);
  font-size: clamp(1.2rem, 3vw, 1.8rem);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--white);
  margin-bottom: var(--space-sm);
}

.series-text {
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 300;
  line-height: 1.7;
  color: var(--gray-200);
}

.series-text p + p {
  margin-top: var(--space-sm);
}


/* --- Footer --- */
.site-footer {
  padding: var(--space-xs) 0;
  margin-top: 0;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  max-width: 900px;
  margin: 0 auto;
}

.footer-social {
  display: flex;
  gap: var(--space-md);
}

.footer-social a {
  color: var(--gray-400);
  transition: color var(--transition), transform var(--transition);
  display: flex;
  align-items: center;
}

.footer-social a:hover {
  color: var(--white);
  transform: translateY(-2px);
}

.footer-social .bmc-link img,
.footer-social .flickr-link img {
  width: 20px;
  height: 20px;
  object-fit: contain;
}

.footer-social .flickr-link img {
  opacity: 0.5;
}

.footer-copy {
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--gray-400);
}


/* --- Animations --- */
@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}


/* --- Responsive --- */

/* Static header for narrow viewports */
@media (max-width: 1120px) {
  .site-header {
    position: relative;
  }

  .carousel {
    margin-top: var(--space-sm);
  }

  .series-list-page {
    padding-top: var(--space-sm);
  }

  .series-page {
    padding-top: var(--space-sm);
  }
}

/* Tablet */
@media (max-width: 1024px) {
  :root {
    --space-lg: 2rem;
    --space-xl: 3.5rem;
    --space-2xl: 5rem;
  }

  .series-list-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .about-inner {
    grid-template-columns: 1fr;
    gap: var(--space-lg);
  }

  .about-portrait {
    position: static;
    max-width: 400px;
  }

}

/* Mobile */
@media (max-width: 640px) {
  :root {
    --space-lg: 1.25rem;
    --space-xl: 2.5rem;
    --space-2xl: 4rem;
  }

  .site-header {
    padding: var(--space-sm) var(--space-md);
  }

  .nav-links {
    gap: var(--space-md);
  }

  .nav-links a {
    font-size: 0.7rem;
  }

  .carousel-caption {
    bottom: var(--space-lg);
    left: var(--space-md);
  }

  .series-list-grid {
    grid-template-columns: 1fr;
    gap: var(--space-lg);
  }

  .footer-inner {
    flex-direction: column;
    gap: var(--space-sm);
    text-align: center;
  }
}

/* Large screens */
@media (min-width: 1400px) {
  .series-list-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}