/* ===========================================================================
   Self-hosted fonts (latin subset, woff2). No third-party font origin.
   =========================================================================== */
@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 300;
  font-display: swap;
  src: url('/fonts/inter-300.woff2') format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url('/fonts/inter-400.woff2') format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: 'Playfair Display';
  font-style: italic;
  font-weight: 400;
  font-display: swap;
  src: url('/fonts/playfair-italic-400.woff2') format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: 'Playfair Display';
  font-style: italic;
  font-weight: 700;
  font-display: swap;
  src: url('/fonts/playfair-italic-700.woff2') format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

/* ===========================================================================
   drumssand.me — shared identity system (zero-build)
   One canvas, one type system, one voice across four pages.
   Change a token here and the whole site shifts.
   =========================================================================== */

:root {
  /* INK — the dark ground and the white text tiers (from the original card) */
  --ground: #050505;
  --ink: #ffffff;
  --ink-strong: rgba(255, 255, 255, 0.85);
  --ink-mid: rgba(255, 255, 255, 0.45);   /* whisper line, deks */
  --ink-quiet: rgba(255, 255, 255, 0.28);  /* quiet nav links */
  --ink-ghost: rgba(255, 255, 255, 0.22);  /* sketch credit captions */
  --plate: #000000;                         /* black backing, proven on the card */
  --plate-soft: rgba(0, 0, 0, 0.8);
  --rule: rgba(255, 255, 255, 0.18);        /* editorial hairline */

  /* TYPE — families already loaded per page from Google Fonts */
  --font-display: 'Playfair Display', serif;     /* name, titles, pull-quotes — always italic */
  --font-body: 'Inter', sans-serif;
  --font-mono: ui-monospace, 'SF Mono', 'Menlo', monospace; /* dates, filenames, cv facts */

  --step-fragment: 0.7rem;
  --step-meta: 0.75rem;
  --step-body: 0.95rem;
  --step-role: 0.9rem;
  --step-name: 2.5rem;
  --step-title: 1.6rem;
  --track-role: 2px;
  --track-eyebrow: 3px;

  /* RHYTHM */
  --space-1: 0.5rem;
  --space-2: 1rem;
  --space-3: 2rem;
  --space-4: 4rem;
  --gutter: 10vw;            /* echoes the card's margin-left across every page */
  --reading-measure: 640px;
  --lead: 1.6;

  /* MOTION */
  --ease-ink: cubic-bezier(0.22, 1, 0.36, 1);
  --dur-settle: 1.2s;
  --dur-fade: 1.5s;
  --dur-micro: 0.3s;

  /* THE DUALITY GRADIENT — one variable carries the artist -> engineer arc.
     Each page overrides it via a body class below. */
  --canvas-opacity: 1;
}

/* --- reset ------------------------------------------------------------------ */
* {
  -webkit-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
  user-select: none;
  -webkit-touch-callout: none;
  -webkit-tap-highlight-color: transparent;
}

html {
  scroll-behavior: smooth;
  scrollbar-width: none;        /* Firefox — hide the scrollbar, keep scrolling */
  -ms-overflow-style: none;     /* legacy Edge/IE */
}
html::-webkit-scrollbar {       /* WebKit / Blink */
  width: 0;
  height: 0;
  display: none;
}

body {
  margin: 0;
  padding: 0;
  background-color: var(--ground);
  color: var(--ink);
  font-family: var(--font-body);
  overscroll-behavior: none;
}

/* The live canvas: a fixed backdrop behind everything, dimmed per page. */
canvas {
  display: block;
  position: fixed;
  top: 0;
  left: 0;
  z-index: -1;
  opacity: var(--canvas-opacity);
}

/* --- page depth (canvas intensity + scroll behaviour) ----------------------- */
.is-landing {
  --canvas-opacity: 1;
  height: 100vh;
  overflow: hidden;
  touch-action: none;          /* the card is a no-scroll statement */
}
.is-projects { --canvas-opacity: 0.22; }
.is-writing  { --canvas-opacity: 0.08; }
.is-cv       { --canvas-opacity: 0.12; }

/* ===========================================================================
   LANDING — the card / overture (no scroll, full art intensity)
   =========================================================================== */
.layout {
  position: absolute;
  inset: 0;
  height: 100vh;
  display: flex;
  align-items: center;
  justify-content: flex-start;
  pointer-events: none;        /* let the canvas breathe; the card re-enables */
}

.profile-card {
  margin-left: var(--gutter);
  pointer-events: auto;
  max-width: 300px;
  animation: riseIn var(--dur-fade) var(--ease-ink);
}
/* The card paints immediately (opacity 1); the entrance is a transform-only
   slide, so content is never hidden behind a paused animation — FCP-safe even
   when the tab is backgrounded/throttled (avoids Lighthouse NO_FCP). */
@keyframes riseIn {
  from { transform: translateY(14px); }
  to   { transform: translateY(0); }
}

.profile-img {
  width: 50px;
  height: 50px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid rgba(255, 255, 255, 0.1);
  transition: transform var(--dur-micro) ease;
  pointer-events: none;
}
.profile-img:hover {
  transform: scale(1.1) rotate(5deg);
}

.tag {
  display: block;
  width: fit-content;
  font-size: var(--step-meta);
  color: var(--ink-strong);
  letter-spacing: 1px;
  font-weight: 300;
  margin-bottom: 0.2rem;
  background-color: var(--plate);
  padding: 5px 10px;
  border-radius: 5px;
}

.name {
  font-family: var(--font-display);
  font-size: var(--step-name);
  font-weight: 700;
  font-style: italic;
  line-height: 1.1;
  margin: 0 0 0.5rem 0;
  padding: 5px;
  width: fit-content;
  background-color: var(--plate);
  text-shadow: 0 20px 30px rgba(0, 0, 0, 0.5);
}

/* .role — PRODUCT ENGINEER — Liquid Glass chip.
   Base rule = the no-backdrop-filter fallback (dense smoked-dark, readable
   everywhere). @supports upgrades it to real frosted glass; desktop Chromium
   additionally gets true SVG refraction (#liquid). Pure CSS + one inline SVG. */
.role {
  display: inline-block;
  width: fit-content;
  position: relative;            /* anchor the ::before sheen */
  z-index: 0;                    /* stacking context for the sheen */
  isolation: isolate;            /* contain the screen-blend context */
  overflow: hidden;              /* clip the sheen to the pane */

  font-size: var(--step-role);
  text-transform: uppercase;
  letter-spacing: var(--track-role);
  font-weight: 400;
  padding: 5px 9px;
  border-radius: 7px;

  color: var(--ink);
  /* tight dark halo — keeps white strokes crisp over the brightest sketch */
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.55), 0 0 1px rgba(0, 0, 0, 0.7);

  /* fallback body (no blur): dense floor so it never goes transparent */
  background: linear-gradient(
    to bottom,
    rgba(255, 255, 255, 0.10) 0%,
    rgba(0, 0, 0, 0.62) 38%,
    rgba(0, 0, 0, 0.78) 100%
  );

  /* edge-light + lift: bright top rim, dark underside, soft drop shadow */
  border: 1px solid rgba(255, 255, 255, 0.22);
  box-shadow:
    0 8px 24px rgba(0, 0, 0, 0.45),
    inset 0 1px 0 rgba(255, 255, 255, 0.45),
    inset 0 -1px 0 rgba(0, 0, 0, 0.35);

  transform: translateZ(0);      /* own GPU layer for the backdrop sample */
}

/* faint static specular sheen — quiet, no animation (reduced-motion safe) */
.role::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(
    120deg,
    transparent 0%,
    rgba(255, 255, 255, 0.14) 35%,
    transparent 62%
  );
  mix-blend-mode: screen;
  z-index: 1;
}

/* real glass: only where backdrop-filter exists. Thins the body so the live
   sketch refracts through; brightness(.82) caps backdrop luminance BEFORE the
   white text composites — the load-bearing legibility safeguard. */
@supports ((backdrop-filter: blur(1px)) or (-webkit-backdrop-filter: blur(1px))) {
  .role {
    -webkit-backdrop-filter: blur(14px) saturate(160%) brightness(0.82);
    backdrop-filter: blur(14px) saturate(160%) brightness(0.82);
    background: linear-gradient(
      to bottom,
      rgba(255, 255, 255, 0.10) 0%,
      rgba(0, 0, 0, 0.22) 45%,
      rgba(0, 0, 0, 0.34) 100%
    );
  }
}

/* mobile: smaller blur radius = fewer sampled texels per frame = less battery */
@media (max-width: 600px) {
  @supports ((backdrop-filter: blur(1px)) or (-webkit-backdrop-filter: blur(1px))) {
    .role {
      -webkit-backdrop-filter: blur(10px) saturate(150%) brightness(0.82);
      backdrop-filter: blur(10px) saturate(150%) brightness(0.82);
    }
  }
}

/* desktop refraction upgrade — Chromium-strong, perf-gated. The quoted url()
   test reads false in Safari/Firefox, so they keep the pure frost untouched. */
@supports (backdrop-filter: url('#liquid')) {
  @media (min-width: 880px) {
    .role {
      backdrop-filter: url('#liquid') blur(2px) saturate(160%) brightness(0.82);
    }
  }
}

/* reduced motion: nothing animates, but neutralise the screen blend so the
   sheen can never read as a glint over a frozen canvas. */
@media (prefers-reduced-motion: reduce) {
  .role::before { mix-blend-mode: normal; opacity: 0.6; }
}

/* print: collapse the glass to ink-on-paper. */
@media print {
  .role {
    -webkit-backdrop-filter: none;
    backdrop-filter: none;
    background: #fff;
    color: #000;
    box-shadow: none;
    text-shadow: none;
    border: 0;
    border-bottom: 2px solid #333;
    border-radius: 0;
  }
  .role::before { display: none; }
}

/* The load-bearing duality line — a confession, not a slogan. Fades in
   AFTER the role so the eye reads name -> role -> confession. */
.whisper {
  display: block;
  width: fit-content;
  margin-top: 0.4rem;
  font-size: var(--step-fragment);
  font-weight: 300;
  text-transform: lowercase;
  letter-spacing: 0.3px;
  color: var(--ink-mid);
  background-color: var(--plate-soft);
  padding: 3px 7px;
  border-radius: 4px;
  opacity: 0;
  animation: fadeIn 0.9s var(--ease-ink) 0.6s forwards;
}

/* One manifesto line, distilled from the README, in Oscar's own voice. */
.manifesto {
  display: block;
  width: fit-content;
  margin-top: 0.9rem;
  font-size: var(--step-fragment);
  font-weight: 300;
  line-height: 1.4;
  color: var(--ink-mid);
  background-color: var(--plate-soft);
  padding: 4px 8px;
  border-radius: 4px;
}

.socials {
  display: flex;
  gap: 20px;
  width: fit-content;
  margin-top: 1.4rem;
  background-color: var(--plate-soft);
  padding: 5px 10px;
  border-radius: 10px;
}
.social-link {
  display: block;
  text-decoration: none;
  color: var(--ink-strong);
  transition: color var(--dur-micro) ease, transform var(--dur-micro) ease;
}
.social-link svg {
  display: block;
  width: 22px;
  height: 22px;
  fill: currentColor;
}
.social-link:hover,
.social-link:focus-visible {
  color: var(--ink);
  transform: translateY(-3px);
  outline: none;
}

/* Named work: credits the running sketch as an authored generative piece. */
.sketch-credit {
  display: block;
  width: fit-content;
  margin-top: 0.6rem;
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.5px;
  color: var(--ink-ghost);
  background-color: var(--plate-soft);
  padding: 2px 6px;
  border-radius: 3px;
}
.sketch-credit::before {
  content: '◆ ';
  opacity: 0.6;
}

/* the explore nav — meant to be SEEN: legible over any sketch (own plate),
   bright, with a persistent hairline underline that reads as "these are links"
   even on touch (no hover), brightening on hover/focus. */
.quiet-links {
  display: flex;
  gap: 1.1rem;
  margin-top: 1.1rem;
  width: fit-content;
  padding: 7px 13px;
  background-color: var(--plate-soft);
  border-radius: 8px;
}
.quiet-links a {
  font-family: var(--font-body);
  font-size: 0.8rem;
  font-weight: 400;
  text-decoration: none;
  letter-spacing: 1px;
  text-transform: lowercase;
  color: var(--ink-strong);
  border-bottom: 1px solid var(--rule);
  padding-bottom: 1px;
  transition: color var(--dur-micro) ease, border-color var(--dur-micro) ease;
}
.quiet-links a:hover,
.quiet-links a:focus-visible {
  color: var(--ink);
  border-bottom-color: var(--ink);
  outline: none;
}

/* Keep the no-scroll card breathing on small screens: lift it, shrink the
   name, and drop the manifesto line first (the designated overflow valve). */
@media (max-width: 600px) {
  .profile-card {
    margin-left: 8vw;
    margin-bottom: 10vh;
  }
  .name { font-size: 2rem; }
  .manifesto { display: none; }
}

/* ===========================================================================
   INTERIOR PAGES — reading rooms (scroll, dimmed canvas, one editorial hand)
   =========================================================================== */
.page {
  position: relative;
  z-index: 1;
  min-height: 100vh;          /* covers the viewport so the shield wraps all taps */
  box-sizing: border-box;
  padding: var(--space-4) var(--gutter) calc(var(--space-4) * 1.5);
}

/* running wordmark + back link — iOS large-title behaviour: looks like the
   original (transparent, with breathing room) at rest, and grows a thin
   frosted bar + hairline only once it pins to the top on scroll. The full-bleed
   background breaks out of the page gutter; content stays aligned to the
   reading column via the inner wrapper. */
.running-mark {
  position: sticky;
  top: 0;
  z-index: 20;
  margin: 0 calc(-1 * var(--gutter)) var(--space-4);
  padding: calc(var(--space-2) * 1.5) var(--gutter);
  background: transparent;
  border-bottom: 1px solid transparent;
  transition: background var(--dur-micro) ease, border-color var(--dur-micro) ease;
}
.running-mark.is-stuck {
  background: rgba(5, 5, 5, 0.62);
  -webkit-backdrop-filter: saturate(120%) blur(14px);
  backdrop-filter: saturate(120%) blur(14px);
  border-bottom-color: var(--rule);
}
.running-mark-inner {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  max-width: var(--reading-measure);
  margin: 0 auto;
  font-size: var(--step-body);
}
.running-mark .wordmark {
  font-family: var(--font-mono);
  letter-spacing: 1px;
  color: var(--ink-ghost);
  text-decoration: none;
}
.running-mark .back-link {
  font-family: var(--font-body);
  text-transform: lowercase;
  letter-spacing: 1px;
  color: var(--ink-quiet);
  text-decoration: none;
  transition: color var(--dur-micro) ease;
}
.running-mark .back-link:hover,
.running-mark .back-link:focus-visible {
  color: var(--ink-strong);
  outline: none;
}

/* the centred reading column, backed by a solid plate so bright sketches
   never fight the text (mitigation over a global overlay). */
.reading-column {
  max-width: var(--reading-measure);
  margin: 0 auto;
  background-color: var(--plate);
  padding: var(--space-3) var(--space-3) calc(var(--space-3) * 1.25);
  border-radius: 6px;
  border: 1px solid var(--rule);
}

.page-eyebrow {
  font-family: var(--font-mono);
  font-size: var(--step-fragment);
  letter-spacing: var(--track-eyebrow);
  text-transform: uppercase;
  color: var(--ink-ghost);
  margin: 0 0 var(--space-2);
}
.page-title {
  font-family: var(--font-display);
  font-style: italic;
  font-weight: 700;
  font-size: var(--step-title);
  line-height: 1.15;
  margin: 0 0 var(--space-3);
}

/* selectable, readable body copy in the rooms */
.reading-column p,
.dek,
.pullquote,
.entry-title,
.work-title {
  -webkit-user-select: text;
  user-select: text;
}
.reading-column p {
  font-size: var(--step-body);
  line-height: var(--lead);
  color: var(--ink-strong);
  max-width: 60ch;
}
.reading-column a {
  color: var(--ink);
  text-decoration: underline;
  text-underline-offset: 2px;
  text-decoration-color: var(--rule);
  transition: text-decoration-color var(--dur-micro) ease;
}
.reading-column a:hover,
.reading-column a:focus-visible {
  text-decoration-color: var(--ink);
  outline: none;
}

.rule {
  border: 0;
  border-top: 1px solid var(--rule);
  margin: var(--space-3) 0;
}

.dek {
  font-size: var(--step-meta);
  color: var(--ink-mid);
  line-height: 1.5;
}

.status {
  font-family: var(--font-mono);
  font-size: var(--step-fragment);
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--ink-ghost);
}

/* one Playfair-italic pull-quote per project/essay — the single editorial hand */
.pullquote {
  font-family: var(--font-display);
  font-style: italic;
  font-size: 1.2rem;
  line-height: 1.35;
  color: var(--ink);
  border-left: 2px solid var(--rule);
  padding-left: var(--space-2);
  margin: var(--space-3) 0;
}

/* --- /projects — narrative spreads ----------------------------------------- */
.work {
  margin-bottom: var(--space-4);
}
.work-title {
  font-family: var(--font-display);
  font-style: italic;
  font-size: 1.4rem;
  margin: 0 0 var(--space-1);
}
.work-meta {
  font-family: var(--font-mono);
  font-size: var(--step-fragment);
  letter-spacing: 1px;
  color: var(--ink-ghost);
  margin-bottom: var(--space-2);
}

/* --- /writing — zine table of contents ------------------------------------- */
.toc {
  list-style: none;
  margin: 0;
  padding: 0;
}
.toc li {
  padding: var(--space-2) 0;
  border-bottom: 1px solid var(--rule);
}
.entry-title {
  font-family: var(--font-display);
  font-style: italic;
  font-size: 1.25rem;
  color: var(--ink);
  text-decoration: none;
  display: inline-block;
}
.entry-date {
  font-family: var(--font-mono);
  font-size: var(--step-fragment);
  color: var(--ink-ghost);
  letter-spacing: 1px;
}

/* --- /cv — the structured self --------------------------------------------- */
.cv-section {
  margin-bottom: var(--space-3);
}
.cv-section h2 {
  font-family: var(--font-mono);
  font-size: var(--step-fragment);
  letter-spacing: var(--track-eyebrow);
  text-transform: uppercase;
  color: var(--ink-mid);
  margin: 0 0 var(--space-2);
}
.cv-row {
  display: flex;
  justify-content: space-between;
  gap: var(--space-2);
  margin-bottom: var(--space-1);
}
.cv-mono {
  font-family: var(--font-mono);
  font-size: var(--step-meta);
  color: var(--ink-strong);
}

/* ===========================================================================
   DESKTOP COMPOSITION (min-width: 880px) — left-anchored editorial stack.
   On wide screens the interior reading stack stops centering and seats against
   the left gutter, echoing the landing card's margin-left:var(--gutter). The
   right side is surrendered to the dim canvas as intentional negative space —
   the void becomes the composition instead of a stranded box.
   Scoped to >=880px, so the mobile (<=600px) and tablet (600-879px) centered
   layouts are provably untouched.
   =========================================================================== */
@media (min-width: 880px) {
  .reading-column {
    margin-left: 0;
    margin-right: auto;   /* anchor left at the gutter; canvas breathes on the right */
  }
  .running-mark-inner {
    margin: 0;            /* header text left-anchors over the content column */
  }
}

/* ===========================================================================
   MOBILE reading pages (<=600px) — use the width, tighten the rhythm.
   Collapses the desktop-scale double-padding so cards run near full-width
   (text ~311px vs ~236px before) and the vertical rhythm is compact, cutting
   wasted space and scroll. Desktop is untouched (separate breakpoint).
   =========================================================================== */
@media (max-width: 600px) {
  .page {
    padding: var(--space-2) var(--space-2) var(--space-3);
  }
  .running-mark {
    margin: 0 calc(-1 * var(--space-2)) var(--space-2);
    padding-left: var(--space-2);
    padding-right: var(--space-2);
  }
  .reading-column {
    padding: var(--space-2);
    margin-bottom: var(--space-2);
  }
  .work {
    margin-bottom: var(--space-2);
  }
  .page-title {
    margin-bottom: var(--space-2);
  }
}

/* ===========================================================================
   MOTION
   =========================================================================== */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(20px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* Flash-free cross-document navigation. One rule, zero JS.
   Unsupported browsers fall back to an instant plain navigation. */
@view-transition {
  navigation: auto;
}

/* Respect users who ask for less motion — neutralise every entrance/transition. */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-delay: 0ms !important;
    transition-duration: 0.001ms !important;
  }
  .profile-card,
  .whisper { opacity: 1 !important; }
  @view-transition { navigation: none; }
}

/* ===========================================================================
   PRINT — /cv goes black-on-white with no canvas (the page recruiters screenshot)
   =========================================================================== */
@media print {
  canvas { display: none !important; }
  body { background: #fff; color: #000; }
  .running-mark { display: none; }
  .reading-column {
    background: #fff;
    border: 0;
    padding: 0;
    max-width: none;
  }
  .page { padding: 0; }
  .reading-column p,
  .cv-mono,
  .dek { color: #000; }
  .page-title,
  .work-title,
  .entry-title { color: #000; }
  .cv-section h2,
  .page-eyebrow { color: #333; }
}