/* Shared base for every page: palette (light + dark), typography, the
   "card + depth square" component, nav/footer, and the process
   grid + slideshow.
   Mobile-first: everything below is written for a single-column phone
   layout by default. desktop.css / mobile.css only ADD to this with
   min-width media queries - nothing here assumes a wide screen. */

/* ---- light palette (default) ------------------------------------- */
:root {
  --bg:            #eef4fc;
  --ink:           #10203f;
  --ink-soft:      #3a5a96;

  --card-header:   #dbe7fb;
  --accent-header: #9db8e8;

  --card-crew:     #d3e3fa;
  --accent-crew:   #86ade6;

  --card-nexp:     #cbdcf7;
  --accent-nexp:   #6f9fe0;

  --card-saysmt:   #c3d6f4;
  --accent-saysmt: #5f8fd6;

  --panel:         #e4edfb;
  --panel-border:  #b9cdf0;
  --btn:           #2853a6;
  --btn-hover:     #1f3f82;
  --ring:          #5b82c4;
  --on-accent:     #ffffff;
}

/* ---- dark palette: its own chosen colors, not an inversion of the
   light set - swapped in automatically for users whose system prefers
   dark, unless they've explicitly picked "light" with the toggle --- */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg:            #050336;
    --ink:           #ffffff;
    --ink-soft:      #b9c4f0;

    --card-header:   #101046;
    --accent-header: #2541a8;

    --card-crew:     #0b2154;
    --accent-crew:   #1c5fc9;

    --card-nexp:     #0a2a5e;
    --accent-nexp:   #2f74d6;

    --card-saysmt:   #113a6b;
    --accent-saysmt: #1f6fb0;

    --panel:         #0a0850;
    --panel-border:  #23206e;
    --btn:           #1b1870;
    --btn-hover:     #262299;
    --ring:          #3a6ea5;
    --on-accent:     #ffffff;
  }
}

/* explicit toggle wins over system preference in both directions */
:root[data-theme="dark"] {
  --bg:            #050336;
  --ink:           #ffffff;
  --ink-soft:      #b9c4f0;

  --card-header:   #101046;
  --accent-header: #2541a8;

  --card-crew:     #0b2154;
  --accent-crew:   #1c5fc9;

  --card-nexp:     #0a2a5e;
  --accent-nexp:   #2f74d6;

  --card-saysmt:   #113a6b;
  --accent-saysmt: #1f6fb0;

  --panel:         #0a0850;
  --panel-border:  #23206e;
  --btn:           #1b1870;
  --btn-hover:     #262299;
  --ring:          #3a6ea5;
  --on-accent:     #ffffff;
}

* { box-sizing: border-box; }

body {
  font-family: system-ui, -apple-system, "Helvetica Neue", Arial, sans-serif;
  line-height: 1.5;
  color: var(--ink);
  background: var(--bg);
  margin: 0 auto;
  padding: 1.25rem;
  transition: background-color 0.2s ease, color 0.2s ease;
}

h1, h2, h3 {
  font-family: "Stencil Std", "Stencil", "Copperplate", fantasy;
  color: var(--ink);
}

a { color: inherit; }

/* --- site nav ------------------------------------------------------- */
.site-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 0;
  margin-bottom: 0.5rem;
  border-bottom: 1px solid var(--panel-border);
}

.site-name {
  font-family: "Stencil Std", "Stencil", "Copperplate", fantasy;
  font-size: 1.15rem;
  text-decoration: none;
  color: var(--ink);
}

.site-nav-links {
  display: flex;
  align-items: center;
  gap: 1.25rem;
}

.site-nav-links a {
  text-decoration: none;
  color: var(--ink-soft);
  font-size: 0.9rem;
}
.site-nav-links a:hover { color: var(--ink); }

.theme-toggle {
  width: 2.25rem;
  height: 2.25rem;
  border: 1px solid var(--panel-border);
  border-radius: 999px;
  background: none;
  color: var(--ink);
  font-size: 1rem;
  line-height: 1;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
}
.theme-toggle:hover { border-color: var(--ring); }

/* --- quiet footer ----------------------------------------------------*/
.site-footer {
  margin: 4rem 0 1.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--panel-border);
  color: var(--ink-soft);
  font-size: 0.8rem;
  text-align: center;
}
.site-footer p { margin: 0.15rem 0; }
.site-footer a { color: var(--ink-soft); }

/* --- depth-square card component ---------------------------------- */
/* A solid color block sits behind the text, and a second, different
   blue square peeks out from underneath it, so the text reads as a
   raised layer against the page background. */
.card {
  position: relative;
  z-index: 1;
  isolation: isolate;
  padding: 1.25rem 1.5rem;
  border-radius: 0.5rem;
  margin: 0 0 0.25rem;
  transition: background-color 0.2s ease;
}

.card::before {
  content: "";
  position: absolute;
  z-index: -1;
  top: 0.6rem;
  left: 0.6rem;
  width: 100%;
  height: 100%;
  border-radius: 0.5rem;
  transition: background-color 0.2s ease;
}

/* hero: at least double the card padding, more room to breathe */
header.card {
  padding: 3rem 2rem;
  margin: 0.5rem 0 3rem;
  background: var(--card-header);
}
header.card::before { background: var(--accent-header); }
header.card h1 { margin: 0; }
header.card p { color: var(--ink-soft); margin: 0.5rem 0 0; }

.project:nth-of-type(1) .text.card { background: var(--card-crew); }
.project:nth-of-type(1) .text.card::before { background: var(--accent-crew); }

.project:nth-of-type(2) .text.card { background: var(--card-nexp); }
.project:nth-of-type(2) .text.card::before { background: var(--accent-nexp); }

.project:nth-of-type(3) .text.card { background: var(--card-saysmt); }
.project:nth-of-type(3) .text.card::before { background: var(--accent-saysmt); }

.project h2 { margin: 0 0 0.25rem; }
.project .meta { color: var(--ink-soft); font-size: 0.9rem; margin: 0 0 1rem; }

/* mobile-first default: figure stacked above its text, full width,
   with real breathing room before the process section underneath */
.project-main { margin-bottom: 3rem; }
.project-main figure { margin: 0 0 1.75rem; }

/* --- media -----------------------------------------------------------*/
.project { margin: 0 0 7rem; }
figure { margin: 1.5rem 0; }
img, video { max-width: 100%; display: block; }
figcaption { color: var(--ink-soft); font-size: 0.85rem; margin-top: 0.4rem; }

/* --- process: grid overview + detail slideshow ------------------------
   The grid is built from the slideshow's own .slide elements by
   common.js, so there's one source of truth for media + captions. The
   grid is for a quick scan; the slideshow underneath is for a closer
   look, since almost nobody actually clicks prev/next arrows. */
.process { margin: 0 0 7rem; }
.process h3 { margin: 0 0 0.4rem; }
.process-hint { color: var(--ink-soft); font-size: 0.85rem; margin: 0 0 1rem; }

.slide-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(6rem, 1fr));
  gap: 0.75rem;
  margin: 0 0 1.75rem;
}

.grid-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.4rem;
  padding: 0.5rem;
  border: 1px solid var(--panel-border);
  background: var(--panel);
  border-radius: 0.4rem;
  cursor: pointer;
  color: var(--ink);
  font: inherit;
  text-align: center;
}
.grid-item:hover,
.grid-item:focus-visible { border-color: var(--ring); }
.grid-item[aria-current="true"] { border-color: var(--ring); border-width: 2px; }

.grid-item img {
  width: 100%;
  height: 5rem;
  object-fit: cover;
  border-radius: 0.3rem;
  display: block;
  pointer-events: none;
}

.grid-icon {
  width: 100%;
  height: 5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
  background: var(--btn);
  color: var(--on-accent);
  border-radius: 0.3rem;
}

.grid-caption {
  font-size: 0.7rem;
  color: var(--ink-soft);
  line-height: 1.25;
}

/* process-of-creation slideshow: supports any file type (image, video,
   audio, or a plain file link) since it only ever shows/hides a .slide
   wrapper - it never inspects what's inside. */
.slideshow {
  position: relative;
  padding: 1.5rem 3.25rem;
  background: var(--panel);
  border: 1px solid var(--panel-border);
  border-radius: 0.5rem;
  transition: background-color 0.2s ease;
}

.slideshow .slides { position: relative; }

.slide { display: none; text-align: center; }
.slide.is-active { display: block; }

.slide img,
.slide video {
  max-width: 100%;
  max-height: 22rem;
  margin: 0 auto;
  display: block;
  border-radius: 0.25rem;
}

.slide audio { width: 100%; }

.slide .file-link {
  display: inline-block;
  padding: 0.75rem 1.25rem;
  color: var(--on-accent);
  background: var(--btn);
  border-radius: 0.25rem;
  text-decoration: none;
}
.slide .file-link:hover { background: var(--btn-hover); }

.slide-caption {
  color: var(--ink-soft);
  font-size: 0.85rem;
  margin: 0.75rem 0 0;
}

.slide-prev,
.slide-next {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 2.25rem;
  height: 2.25rem;
  border: 1px solid var(--ring);
  border-radius: 50%;
  background: var(--btn);
  color: var(--on-accent);
  font-size: 1rem;
  line-height: 1;
  cursor: pointer;
}
.slide-prev:hover,
.slide-next:hover { background: var(--btn-hover); }

.slide-prev { left: 0.5rem; }
.slide-next { right: 0.5rem; }

.slide-counter {
  text-align: center;
  color: var(--ink-soft);
  font-size: 0.8rem;
  margin: 1rem 0 0;
}

.case-study-btn,
.btn {
  display: inline-block;
  margin: 1.5rem 0;
  padding: 0.75rem 1.35rem;
  background: var(--btn);
  color: var(--on-accent);
  text-decoration: none;
  border-radius: 0.35rem;
  font-size: 0.9rem;
  font-weight: 600;
}
.case-study-btn:hover,
.btn:hover { background: var(--btn-hover); }