/* ==========================================================================
   The Laporatory — Light Editorial Concept
   Warm cream, magazine aesthetic, Kinfolk-meets-geology-journal
   ========================================================================== */

/* --- Design Tokens --- */
:root {
  /* Type Scale (fluid) */
  --text-xs:   clamp(0.75rem,  0.7rem  + 0.25vw, 0.875rem);
  --text-sm:   clamp(0.875rem, 0.8rem  + 0.35vw, 1rem);
  --text-base: clamp(1rem,     0.95rem + 0.25vw, 1.125rem);
  --text-lg:   clamp(1.125rem, 1rem    + 0.75vw, 1.5rem);
  --text-xl:   clamp(1.5rem,   1.2rem  + 1.25vw, 2.25rem);
  --text-2xl:  clamp(2rem,     1.2rem  + 2.5vw,  3.5rem);
  --text-3xl:  clamp(2.5rem,   1rem    + 4vw,    5rem);
  --text-hero: clamp(3rem,     0.5rem  + 7vw,    8rem);

  /* Spacing (4px system) */
  --space-1:  0.25rem;
  --space-2:  0.5rem;
  --space-3:  0.75rem;
  --space-4:  1rem;
  --space-5:  1.25rem;
  --space-6:  1.5rem;
  --space-8:  2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;
  --space-32: 8rem;

  /* Color Palette — Light Editorial */
  --color-bg:          #FAF7F2;
  --color-surface:     #FFFFFF;
  --color-surface-alt: #F3EDE4;
  --color-text:        #2C2618;
  --color-text-muted:  #8A7E6E;
  --color-text-faint:  #C4BAA8;
  --color-primary:     #1A6B5C;
  --color-primary-hover: #145A4D;
  --color-accent:      #C4903A;
  --color-accent-hover:#B07E2E;
  --color-divider:     #E8E0D2;
  --color-border:      #DDD4C4;

  /* Radius — editorial: sharp */
  --radius-sm: 0;
  --radius-md: 0;
  --radius-lg: 0;

  /* Transitions */
  --transition-interactive: 180ms cubic-bezier(0.16, 1, 0.3, 1);

  /* Shadows (warm-tinted) */
  --shadow-sm: 0 1px 2px rgba(44, 38, 24, 0.06);
  --shadow-md: 0 4px 12px rgba(44, 38, 24, 0.08);
  --shadow-lg: 0 12px 32px rgba(44, 38, 24, 0.12);

  /* Content widths */
  --content-narrow: 640px;
  --content-default: 960px;
  --content-wide: 1200px;

  /* Fonts */
  --font-display: 'Instrument Serif', Georgia, serif;
  --font-body:    'DM Sans', 'Helvetica Neue', sans-serif;
  --font-mono:    'DM Mono', 'Courier New', monospace;
}

/* ==========================================================================
   Global Styles
   ========================================================================== */

body {
  background-color: var(--color-bg);
  color: var(--color-text);
}

a {
  color: var(--color-primary);
  text-decoration: none;
}
a:hover {
  color: var(--color-primary-hover);
}

/* Section label (DM Mono, small caps, letter-spaced) */
.section-label {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--color-text-muted);
  margin-bottom: var(--space-4);
}

/* Editorial heading */
.section-heading {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 400;
  color: var(--color-text);
  line-height: 1.1;
}

/* Hairline rule */
.rule {
  border: none;
  border-top: 1px solid var(--color-divider);
  margin: 0;
}

/* Container */
.container {
  max-width: var(--content-wide);
  margin: 0 auto;
  padding-inline: var(--space-6);
}

/* Section spacing */
.section {
  padding-block: clamp(var(--space-12), 8vw, var(--space-24));
}

/* ==========================================================================
   Header / Navigation
   ========================================================================== */

.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(250, 247, 242, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-divider);
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1),
              box-shadow 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}
.header--hidden {
  transform: translateY(-100%);
}
.header--scrolled {
  box-shadow: var(--shadow-sm);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: var(--content-wide);
  margin: 0 auto;
  padding: var(--space-4) var(--space-6);
}

.header__logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  text-decoration: none;
  color: var(--color-text);
}
.header__logo svg {
  width: 32px;
  height: 32px;
  flex-shrink: 0;
}
.header__logo-text {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 400;
  letter-spacing: -0.01em;
}

.header__nav {
  display: flex;
  align-items: center;
  gap: var(--space-8);
}
.header__nav a {
  font-family: var(--font-body);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  text-decoration: none;
  letter-spacing: 0.02em;
  transition: color var(--transition-interactive);
}
.header__nav a:hover {
  color: var(--color-text);
}

/* Mobile menu toggle */
.header__menu-btn {
  display: none;
  width: 28px;
  height: 28px;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
}
.header__menu-btn span {
  display: block;
  width: 20px;
  height: 1.5px;
  background: var(--color-text);
  transition: transform 0.3s ease, opacity 0.3s ease;
}

/* Mobile nav */
.mobile-nav {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 99;
  background: var(--color-bg);
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-8);
}
.mobile-nav.is-open {
  display: flex;
}
.mobile-nav a {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  color: var(--color-text);
  text-decoration: none;
}
.mobile-nav__close {
  position: absolute;
  top: var(--space-4);
  right: var(--space-6);
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: none;
  border: none;
  cursor: pointer;
  font-size: 24px;
  color: var(--color-text);
}

@media (max-width: 768px) {
  .header__nav {
    display: none;
  }
  .header__menu-btn {
    display: flex;
  }
}

/* ==========================================================================
   Hero
   ========================================================================== */

.hero {
  position: relative;
  min-height: 85vh;
  display: flex;
  align-items: flex-end;
  overflow: hidden;
}

.hero__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}
.hero__bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.55;
}
.hero__bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to right,
    rgba(250, 247, 242, 0.92) 0%,
    rgba(250, 247, 242, 0.7) 40%,
    rgba(250, 247, 242, 0.2) 70%,
    rgba(250, 247, 242, 0.05) 100%
  );
}

.hero__content {
  position: relative;
  z-index: 1;
  max-width: var(--content-wide);
  margin: 0 auto;
  padding: var(--space-32) var(--space-6) var(--space-16);
  width: 100%;
}

.hero__title {
  font-family: var(--font-display);
  font-size: var(--text-hero);
  font-weight: 400;
  color: var(--color-text);
  line-height: 0.95;
  margin-bottom: var(--space-6);
  max-width: 10ch;
}

.hero__tagline {
  max-width: 480px;
}
.hero__tagline-word {
  font-family: var(--font-display);
  font-style: italic;
  font-size: var(--text-xl);
  color: var(--color-text);
  display: block;
  margin-bottom: var(--space-1);
}
.hero__tagline-pos {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  letter-spacing: 0.05em;
  display: block;
  margin-bottom: var(--space-3);
}
.hero__tagline-def {
  font-family: var(--font-body);
  font-size: var(--text-base);
  color: var(--color-text-muted);
  line-height: 1.6;
}

.hero__scroll-cue {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin-top: var(--space-10);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}
.hero__scroll-cue svg {
  width: 16px;
  height: 16px;
  animation: scroll-bounce 2s ease-in-out infinite;
}

@keyframes scroll-bounce {
  0%, 100% { transform: translateY(0); }
  50%      { transform: translateY(4px); }
}

/* ==========================================================================
   About Section — Magazine Two-Column
   ========================================================================== */

.about {
  padding-block: clamp(var(--space-16), 10vw, var(--space-32));
}

.about__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-16);
  max-width: var(--content-wide);
  margin: 0 auto;
  padding-inline: var(--space-6);
  align-items: start;
}

.about__text {
  padding-top: var(--space-4);
}
.about__text .section-label {
  margin-bottom: var(--space-3);
}
.about__text .section-heading {
  margin-bottom: var(--space-8);
}
.about__text p {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  line-height: 1.7;
  margin-bottom: var(--space-4);
  max-width: 52ch;
}

.about__pull-quote {
  font-family: var(--font-display);
  font-style: italic;
  font-size: var(--text-xl);
  color: var(--color-text);
  line-height: 1.3;
  border-left: 2px solid var(--color-accent);
  padding-left: var(--space-6);
  margin: var(--space-8) 0;
  max-width: 38ch;
}

.about__image {
  width: 100%;
  height: 100%;
  min-height: 500px;
  object-fit: cover;
}

.about__locations {
  margin-top: var(--space-8);
}
.about__locations-label {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--color-text-faint);
  margin-bottom: var(--space-2);
}
.about__locations-list {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.6;
}

@media (max-width: 768px) {
  .about__grid {
    grid-template-columns: 1fr;
    gap: var(--space-8);
  }
  .about__image {
    min-height: 300px;
    order: -1;
  }
}

/* ==========================================================================
   Process — Visual Storytelling Strip
   ========================================================================== */

.process {
  padding-block: clamp(var(--space-12), 8vw, var(--space-24));
  border-top: 1px solid var(--color-divider);
}

.process__header {
  max-width: var(--content-wide);
  margin: 0 auto;
  padding-inline: var(--space-6);
  margin-bottom: var(--space-12);
}

.process__strip {
  display: flex;
  max-width: var(--content-wide);
  margin: 0 auto;
  padding-inline: var(--space-6);
  gap: 0;
}

.process__step {
  flex: 1;
  position: relative;
  padding: var(--space-8) var(--space-6);
  border-left: 1px solid var(--color-divider);
}
.process__step:first-child {
  border-left: none;
  padding-left: 0;
}
.process__step:last-child {
  padding-right: 0;
}

.process__number {
  font-family: var(--font-display);
  font-size: var(--text-3xl);
  color: var(--color-text-faint);
  line-height: 1;
  margin-bottom: var(--space-4);
  opacity: 0.35;
  letter-spacing: -0.02em;
}

.process__step-title {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  color: var(--color-text);
  margin-bottom: var(--space-3);
}

.process__step-desc {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.6;
  max-width: 24ch;
}

@media (max-width: 768px) {
  .process__strip {
    flex-direction: column;
    gap: 0;
  }
  .process__step {
    border-left: none;
    border-top: 1px solid var(--color-divider);
    padding: var(--space-6) 0;
    display: grid;
    grid-template-columns: auto 1fr;
    grid-template-rows: auto auto;
    gap: 0 var(--space-4);
    align-items: start;
  }
  .process__step:first-child {
    border-top: none;
  }
  .process__number {
    grid-row: 1 / 3;
    font-size: var(--text-2xl);
    align-self: center;
  }
  .process__step-title {
    margin-bottom: var(--space-1);
  }
  .process__step-desc {
    max-width: none;
  }
}

/* ==========================================================================
   Collection — Asymmetric Grid
   ========================================================================== */

.collection {
  padding-block: clamp(var(--space-12), 8vw, var(--space-24));
  border-top: 1px solid var(--color-divider);
}

.collection__header {
  max-width: var(--content-wide);
  margin: 0 auto;
  padding-inline: var(--space-6);
  margin-bottom: var(--space-10);
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: var(--space-4);
}
.collection__header-note {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  letter-spacing: 0.05em;
}

.collection__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  grid-template-rows: auto auto;
  gap: var(--space-6);
  max-width: var(--content-wide);
  margin: 0 auto;
  padding-inline: var(--space-6);
}

.collection__card {
  position: relative;
  overflow: hidden;
  background: var(--color-surface);
}
.collection__card--featured {
  grid-column: 1 / -1;
}

.collection__card-image {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  display: block;
  transition: transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}
.collection__card--featured .collection__card-image {
  aspect-ratio: 2.5 / 1;
}

.collection__card:hover .collection__card-image {
  transform: scale(1.03);
}

.collection__card-body {
  padding: var(--space-5) var(--space-6);
  border: 1px solid var(--color-divider);
  border-top: none;
}

.collection__card-label {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--color-accent);
  margin-bottom: var(--space-2);
}

.collection__card-title {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  color: var(--color-text);
  margin-bottom: var(--space-2);
}

.collection__card-desc {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.6;
}

.collection__card-tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  border: 1px solid var(--color-divider);
  padding: var(--space-1) var(--space-3);
  margin-top: var(--space-3);
  letter-spacing: 0.05em;
}

@media (max-width: 768px) {
  .collection__grid {
    grid-template-columns: 1fr;
  }
  .collection__header {
    flex-direction: column;
    align-items: flex-start;
  }
}

/* ==========================================================================
   Monthly Experiment / Coming Soon Section
   ========================================================================== */

.experiment {
  padding-block: clamp(var(--space-12), 8vw, var(--space-24));
  border-top: 1px solid var(--color-divider);
  text-align: center;
}

.experiment__inner {
  max-width: var(--content-narrow);
  margin: 0 auto;
  padding-inline: var(--space-6);
}

.experiment__title {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 400;
  color: var(--color-text);
  margin-bottom: var(--space-4);
  line-height: 1.1;
}

.experiment__subtitle {
  font-family: var(--font-display);
  font-style: italic;
  font-size: var(--text-lg);
  color: var(--color-accent);
  margin-bottom: var(--space-6);
}

.experiment__desc {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  line-height: 1.7;
  max-width: 48ch;
  margin: 0 auto;
}

.experiment__image {
  width: 100%;
  max-width: 520px;
  margin: var(--space-8) auto 0;
  aspect-ratio: 16 / 10;
  object-fit: cover;
}

/* ==========================================================================
   Field Notes — Horizontal Scroll Cards
   ========================================================================== */

.fieldnotes {
  padding-block: clamp(var(--space-12), 8vw, var(--space-24));
  border-top: 1px solid var(--color-divider);
  overflow: hidden;
}

.fieldnotes__header {
  max-width: var(--content-wide);
  margin: 0 auto;
  padding-inline: var(--space-6);
  margin-bottom: var(--space-10);
}

.fieldnotes__scroll {
  display: flex;
  gap: var(--space-6);
  overflow-x: auto;
  padding-inline: max(var(--space-6), calc((100vw - var(--content-wide)) / 2 + var(--space-6)));
  padding-bottom: var(--space-4);
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}
.fieldnotes__scroll::-webkit-scrollbar {
  display: none;
}

.fieldnotes__card {
  flex: 0 0 380px;
  scroll-snap-align: start;
  background: var(--color-surface);
  border: 1px solid var(--color-divider);
  overflow: hidden;
  transition: box-shadow 0.3s ease;
}
.fieldnotes__card:hover {
  box-shadow: var(--shadow-md);
}

.fieldnotes__card-image {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.fieldnotes__card-body {
  padding: var(--space-5) var(--space-6);
}

.fieldnotes__card-date {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  letter-spacing: 0.08em;
  margin-bottom: var(--space-2);
}

.fieldnotes__card-title {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  color: var(--color-text);
  margin-bottom: var(--space-2);
}

.fieldnotes__card-excerpt {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.6;
}

@media (max-width: 768px) {
  .fieldnotes__card {
    flex: 0 0 300px;
  }
}

/* ==========================================================================
   Newsletter — Minimal
   ========================================================================== */

.newsletter {
  padding-block: clamp(var(--space-12), 6vw, var(--space-20));
  border-top: 1px solid var(--color-divider);
  border-bottom: 1px solid var(--color-divider);
}

.newsletter__inner {
  max-width: var(--content-narrow);
  margin: 0 auto;
  padding-inline: var(--space-6);
  text-align: center;
}

.newsletter__title {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 400;
  color: var(--color-text);
  margin-bottom: var(--space-3);
}

.newsletter__desc {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  margin-bottom: var(--space-6);
  line-height: 1.6;
}

.newsletter__form {
  display: flex;
  gap: var(--space-3);
  max-width: 440px;
  margin: 0 auto;
}

.newsletter__input {
  flex: 1;
  padding: var(--space-3) var(--space-4);
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  font-size: var(--text-sm);
  color: var(--color-text);
  outline: none;
  transition: border-color var(--transition-interactive);
}
.newsletter__input::placeholder {
  color: var(--color-text-faint);
}
.newsletter__input:focus {
  border-color: var(--color-primary);
}

.newsletter__btn {
  padding: var(--space-3) var(--space-6);
  background: var(--color-text);
  color: var(--color-bg);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  border: none;
  cursor: pointer;
  transition: background var(--transition-interactive);
  white-space: nowrap;
}
.newsletter__btn:hover {
  background: var(--color-primary);
}

@media (max-width: 480px) {
  .newsletter__form {
    flex-direction: column;
  }
}

/* ==========================================================================
   Footer
   ========================================================================== */

.footer {
  padding: var(--space-10) var(--space-6) var(--space-8);
  max-width: var(--content-wide);
  margin: 0 auto;
}

.footer__top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: var(--space-6);
  border-bottom: 1px solid var(--color-divider);
  gap: var(--space-6);
  flex-wrap: wrap;
}

.footer__logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  text-decoration: none;
  color: var(--color-text);
}
.footer__logo svg {
  width: 28px;
  height: 28px;
}
.footer__logo-text {
  font-family: var(--font-display);
  font-size: var(--text-base);
}

.footer__links {
  display: flex;
  gap: var(--space-6);
  flex-wrap: wrap;
}
.footer__links a {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  text-decoration: none;
  transition: color var(--transition-interactive);
}
.footer__links a:hover {
  color: var(--color-text);
}

.footer__bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--space-6);
  gap: var(--space-4);
  flex-wrap: wrap;
}

.footer__copy {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
}

.footer__meta {
  display: flex;
  gap: var(--space-4);
  align-items: center;
}
.footer__meta a {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  text-decoration: none;
  transition: color var(--transition-interactive);
}
.footer__meta a:hover {
  color: var(--color-text-muted);
}

/* ==========================================================================
   Intersection Observer Fade-Ins
   ========================================================================== */

.fade-in {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s cubic-bezier(0.16, 1, 0.3, 1),
              transform 0.7s cubic-bezier(0.16, 1, 0.3, 1);
}
.fade-in.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* Staggered children */
.fade-in-stagger > .fade-in:nth-child(1) { transition-delay: 0ms; }
.fade-in-stagger > .fade-in:nth-child(2) { transition-delay: 100ms; }
.fade-in-stagger > .fade-in:nth-child(3) { transition-delay: 200ms; }
.fade-in-stagger > .fade-in:nth-child(4) { transition-delay: 300ms; }
.fade-in-stagger > .fade-in:nth-child(5) { transition-delay: 400ms; }