/* =============================================================================
 *  tactical.css  —  the OPERATIONAL layer
 * -----------------------------------------------------------------------------
 *  Loads after components.css. This is the "hard structure" half of the system:
 *  glassmorphism stays the atmosphere; this adds the Marathon-like operational
 *  language — corner brackets, HUD readouts, status LEDs, measured section
 *  headers, the identity-node frame, and the inline-SVG icon family.
 *
 *  Rule of the layer: every line means something (status / index / type /
 *  source / readout). No decoration for decoration's sake.
 * ========================================================================== */

/* ---------------------------------------------------------------------------
 *  Inline SVG icon family (from icons.js)
 * ------------------------------------------------------------------------ */
.svg-ico {
  width: 1.15em; height: 1.15em;
  display: block; flex: none;
  vector-effect: non-scaling-stroke;
}

/* ---------------------------------------------------------------------------
 *  Status LED — the universal "signal" dot
 * ------------------------------------------------------------------------ */
.led {
  display: inline-block; flex: none;
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--accent-tertiary);
  box-shadow: 0 0 9px 0 var(--accent-tertiary), inset 0 0 0 1px rgba(255, 255, 255, 0.4);
}
.led--rec { background: var(--accent-expressive); box-shadow: 0 0 9px 0 var(--accent-expressive); animation: led-blink 1.7s steps(1) infinite; }
@keyframes led-blink { 0%, 60% { opacity: 1; } 61%, 100% { opacity: 0.25; } }

/* ---------------------------------------------------------------------------
 *  Section header — index · title · descriptor · measured rule
 * ------------------------------------------------------------------------ */
.section-head {
  grid-template-columns: auto 1fr auto;
  align-items: center;
  column-gap: clamp(14px, 2vw, 26px);
  padding-bottom: clamp(16px, 1.6vw, 22px);
  position: relative;
}
.section-head__index {
  font-family: var(--font-mono);
  font-size: clamp(1.8rem, 1.3rem + 1.8vw, 3rem);
  font-weight: 500;
  line-height: 0.9;
  color: var(--text-faint);
  letter-spacing: 0.02em;
  align-self: start;
  position: relative;
  padding-right: clamp(14px, 2vw, 26px);
}
.section-head__index::after {
  content: ""; position: absolute; right: 0; top: 4px; bottom: 0;
  width: 1px; background: linear-gradient(180deg, var(--glass-border-strong), transparent);
}
.section-head__titles { display: flex; flex-direction: column; gap: 5px; min-width: 0; }
.section-head__desc {
  font-family: var(--font-mono); font-size: var(--fs-mono);
  letter-spacing: var(--tracking-mono); text-transform: uppercase;
  color: var(--text-mono);
}
/* measured baseline rule with an end-tick — frames the whole section */
.section-head::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: 0; height: 1px;
  background:
    linear-gradient(90deg, var(--glass-border-strong) 0%, var(--glass-border) 60%, transparent 100%);
}
.section-head::before {
  content: ""; position: absolute; right: 0; bottom: -3px;
  width: 7px; height: 7px;
  border-right: 1px solid var(--glass-border-strong);
  border-bottom: 1px solid var(--glass-border-strong);
}

/* ---------------------------------------------------------------------------
 *  HERO — operational identity readout
 * ------------------------------------------------------------------------ */
.hud-readout {
  display: flex; flex-wrap: wrap;
  width: max-content; max-width: 100%;
  border: 1px solid var(--glass-border);
  border-radius: var(--r-sm);
  background: rgba(0, 0, 0, 0.22);
  overflow: hidden;
}
.hud-readout > div {
  display: flex; align-items: center; gap: 12px;
  padding: 10px 16px;
  border-right: 1px solid var(--glass-border);
}
.hud-readout > div:last-child { border-right: 0; }
.hud-readout dt {
  font-family: var(--font-mono); font-size: var(--fs-mono);
  letter-spacing: var(--tracking-mono); text-transform: uppercase;
  color: var(--text-low);
}
.hud-readout dd {
  font-family: var(--font-mono); font-size: var(--fs-mono);
  letter-spacing: 0.05em; color: var(--text-hi);
  display: flex; align-items: center; gap: 8px;
}

/* ---------------------------------------------------------------------------
 *  IDENTITY NODE  —  the portrait, rebuilt as a physical scan frame
 *  (replaces the old organic "egg" squircle)
 * ------------------------------------------------------------------------ */
.id-frame {
  --bezel: 12px;
  position: relative;
  width: clamp(250px, 31vw, 366px);
  aspect-ratio: 5 / 6;
  isolation: isolate;
}
/* accent glow halo, sitting behind the panel */
.id-frame::before {
  content: ""; position: absolute; inset: -6px; z-index: -1;
  border-radius: 14px;
  background: var(--grad-hero);
  filter: blur(26px); opacity: 0.4;
  transition: opacity var(--dur-base) var(--ease-out);
}
.id-frame:hover::before { opacity: 0.62; }

.id-frame__inner {
  position: absolute; inset: 0;
  padding: var(--bezel);
  border-radius: 8px;
  background: linear-gradient(155deg, var(--glass-surface-strong), var(--glass-surface));
  border: 1px solid var(--glass-border-strong);
  box-shadow:
    var(--shadow-3),
    inset 0 1px 0 var(--glass-highlight),
    inset 0 0 0 1px rgba(255, 255, 255, 0.04);
  -webkit-backdrop-filter: blur(18px) saturate(150%);
          backdrop-filter: blur(18px) saturate(150%);
}

.id-frame__media {
  position: relative; width: 100%; height: 100%;
  border-radius: 4px; overflow: hidden;
  background: var(--bg-2);
  box-shadow: inset 0 0 0 1px rgba(0, 0, 0, 0.5);
}
.id-frame__img { width: 100%; height: 100%; object-fit: cover; display: block; filter: contrast(1.04) saturate(1.02); }

/* cursor-reactive light + fine scanlines (the "live feed" feel) */
.id-frame__scan {
  position: absolute; inset: 0; z-index: 2; pointer-events: none;
  background:
    radial-gradient(42% 40% at var(--mx, 50%) var(--my, 40%), rgba(255, 255, 255, 0.18), transparent 70%),
    repeating-linear-gradient(0deg, transparent 0 3px, rgba(0, 0, 0, 0.07) 3px 4px);
  mix-blend-mode: screen;
}
/* focus reticle — a measured crosshair that tracks the pointer */
.id-frame__reticle {
  position: absolute; z-index: 3; pointer-events: none;
  left: var(--mx, 50%); top: var(--my, 42%);
  width: 46px; height: 46px; transform: translate(-50%, -50%);
  opacity: 0; transition: opacity var(--dur-base) var(--ease-out);
  background:
    linear-gradient(var(--accent-primary), var(--accent-primary)) 50% 0 / 1px 14px no-repeat,
    linear-gradient(var(--accent-primary), var(--accent-primary)) 50% 100% / 1px 14px no-repeat,
    linear-gradient(var(--accent-primary), var(--accent-primary)) 0 50% / 14px 1px no-repeat,
    linear-gradient(var(--accent-primary), var(--accent-primary)) 100% 50% / 14px 1px no-repeat;
}
.id-frame:hover .id-frame__reticle { opacity: 0.85; }
/* vertical measurement scale on the media edge */
.id-frame__grid {
  position: absolute; z-index: 3; pointer-events: none;
  top: 14%; bottom: 14%; right: 6px; width: 8px;
  background:
    linear-gradient(var(--text-faint), var(--text-faint)) 100% 0 / 1px 100% no-repeat,
    repeating-linear-gradient(180deg, var(--text-low) 0 1px, transparent 1px 11px);
  -webkit-mask: linear-gradient(90deg, transparent, #000);
          mask: linear-gradient(90deg, transparent, #000);
  opacity: 0.6;
}

/* top / bottom OSD readout bars */
.id-frame__bar {
  position: absolute; left: var(--bezel); right: var(--bezel);
  z-index: 4; display: flex; align-items: center; justify-content: space-between;
  gap: 10px; padding: 6px 9px;
  font-size: var(--fs-mono); letter-spacing: var(--tracking-mono); text-transform: uppercase;
  color: var(--text-mid);
  background: linear-gradient(180deg, rgba(5, 7, 13, 0.78), rgba(5, 7, 13, 0.42));
  -webkit-backdrop-filter: blur(4px); backdrop-filter: blur(4px);
}
.id-frame__bar--top { top: var(--bezel); border-bottom: 1px solid color-mix(in oklab, var(--accent-primary) 40%, transparent); }
.id-frame__bar--bottom { bottom: var(--bezel); border-top: 1px solid color-mix(in oklab, var(--accent-primary) 40%, transparent); }
.id-frame__handle { color: var(--text-hi); }
.id-frame__rec { display: inline-flex; align-items: center; gap: 6px; color: var(--accent-expressive); }

/* four corner brackets — the viewfinder */
.id-frame__brk { position: absolute; z-index: 5; width: 22px; height: 22px; pointer-events: none; }
.id-frame__brk--tl { top: -3px; left: -3px; border-top: 2px solid var(--accent-primary); border-left: 2px solid var(--accent-primary); }
.id-frame__brk--br { bottom: -3px; right: -3px; border-bottom: 2px solid var(--accent-primary); border-right: 2px solid var(--accent-primary); }

/* ---------------------------------------------------------------------------
 *  TOPBAR — seamless glass that fades into the page and chases the scroll
 * ------------------------------------------------------------------------ */
/* glass layer extends below the bar and is masked so it DRIPS into the page
 * (no hard edge) — the "seamless / borderless" merge David asked for */
.topbar::before {
  content: ""; position: absolute; inset: 0 0 -24px 0; z-index: -1;
  pointer-events: none;
  background: linear-gradient(180deg,
    color-mix(in oklab, var(--bg-1) 70%, transparent) 0%,
    color-mix(in oklab, var(--bg-1) 30%, transparent) 55%,
    transparent 100%);
  -webkit-backdrop-filter: blur(13px) saturate(140%);
          backdrop-filter: blur(13px) saturate(140%);
  -webkit-mask-image: linear-gradient(180deg, #000 56%, transparent 100%);
          mask-image: linear-gradient(180deg, #000 56%, transparent 100%);
  transition: background var(--dur-base) var(--ease-out),
              backdrop-filter var(--dur-base) var(--ease-out);
}
/* hairline that only appears once you start scrolling */
.topbar::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: 0; height: 1px;
  background: linear-gradient(90deg, transparent, var(--glass-border) 12%, var(--glass-border) 88%, transparent);
  opacity: 0; transition: opacity var(--dur-base) var(--ease-out);
}
.topbar.is-scrolled { height: var(--topbar-h-min); }
.topbar.is-scrolled .topbar__inner { height: var(--topbar-h-min); }
.topbar.is-scrolled::before {
  background: linear-gradient(180deg,
    color-mix(in oklab, var(--bg-1) 88%, transparent) 0%,
    color-mix(in oklab, var(--bg-1) 52%, transparent) 60%,
    transparent 100%);
  -webkit-backdrop-filter: blur(20px) saturate(150%);
          backdrop-filter: blur(20px) saturate(150%);
}
.topbar.is-scrolled::after { opacity: 1; }
/* chase: slides away on scroll-down, springs back on scroll-up */
.topbar.is-hidden { transform: translateY(-100%); }
.topbar:focus-within { transform: none; }            /* keyboard users keep it */
/* scroll-progress hairline riding the bottom edge */
.topbar__progress {
  position: absolute; left: 0; bottom: 0; height: 2px; width: 100%;
  transform: scaleX(0); transform-origin: left center;
  background: linear-gradient(90deg, var(--accent-primary), var(--accent-secondary));
  box-shadow: 0 0 10px 0 color-mix(in oklab, var(--accent-primary) 70%, transparent);
  z-index: 1;
}

.topbar__brand { text-decoration: none; }
.topbar__mark {
  display: grid; place-items: center;
  width: 24px; height: 24px;
  border-radius: 6px;
  color: var(--accent-primary);
  background: color-mix(in oklab, var(--accent-primary) 16%, var(--glass-surface));
  border: 1px solid color-mix(in oklab, var(--accent-primary) 40%, transparent);
}
.topbar__mark .svg-ico { width: 15px; height: 15px; }
.topbar__name { font-family: var(--font-display); font-weight: 620; letter-spacing: 0.02em; color: var(--text-hi); }
.topbar__name-dim { color: var(--text-low); font-weight: 500; }

/* engineering readouts use the display grotesque too */
.gh-stat__num { font-family: var(--font-display); letter-spacing: -0.01em; }

.topbar__menu { gap: clamp(10px, 1.4vw, 22px); }
.topbar__menu a {
  display: inline-flex; align-items: baseline; gap: 6px;
  color: var(--text-mid); font-size: var(--fs-sm); font-weight: 520;
  padding: 4px 2px; position: relative;
  transition: color var(--dur-fast) var(--ease-out);
}
.topbar__menu a i {
  font-family: var(--font-mono); font-style: normal;
  font-size: 0.62em; letter-spacing: 0.1em; color: var(--text-faint);
}
.topbar__menu a:hover { color: var(--text-hi); }
.topbar__menu a[aria-current="true"] { color: var(--text-hi); }
.topbar__menu a[aria-current="true"] i { color: var(--accent-primary); }
.topbar__menu a[aria-current="true"]::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: -3px; height: 2px;
  background: var(--accent-primary); box-shadow: 0 0 10px 0 var(--accent-primary);
}

.topbar__sig { display: inline-flex; align-items: center; gap: 8px; color: var(--text-mid); }
.topbar__clock {
  color: var(--text-hi);
  padding: 3px 9px; border-radius: 7px;
  background: rgba(0, 0, 0, 0.28); border: 1px solid var(--glass-border);
  font-variant-numeric: tabular-nums;
}

/* ---------------------------------------------------------------------------
 *  DOCK — SVG icons
 * ------------------------------------------------------------------------ */
.dock-item__glyph { display: grid; place-items: center; line-height: 1; }
.dock-item__glyph .svg-ico { width: 24px; height: 24px; }
.dock-item[data-mailto] .svg-ico,
.dock-item:hover .svg-ico { color: inherit; }

/* ---------------------------------------------------------------------------
 *  BUTTONS / CARDS — icon sizing
 * ------------------------------------------------------------------------ */
.btn .ico { display: inline-flex; align-items: center; }
.btn .ico .svg-ico { width: 1.08em; height: 1.08em; }
.ico--toggle .svg-ico { transition: transform var(--dur-base) var(--ease-spring); }
.workstation.is-open .ico--toggle .svg-ico { transform: rotate(45deg); }

/* ---------------------------------------------------------------------------
 *  CAPABILITY MODULE — icon + operational footer
 * ------------------------------------------------------------------------ */
.skill__glyph .svg-ico { width: 24px; height: 24px; }
.skill__foot {
  display: flex; align-items: center; justify-content: space-between;
  gap: var(--sp-3); margin-top: auto; padding-top: var(--sp-2);
}
.skill__status {
  display: inline-flex; align-items: center; gap: 7px;
  font-family: var(--font-mono); font-size: var(--fs-mono);
  letter-spacing: var(--tracking-mono); text-transform: uppercase;
  color: var(--accent);
}

/* ---------------------------------------------------------------------------
 *  SOCIAL / LIGHTBOX / SHOT — icon sizing
 * ------------------------------------------------------------------------ */
.social-card__glyph { display: grid; place-items: center; }
.social-card__glyph .svg-ico { width: 22px; height: 22px; }
.social-card__arrow .svg-ico { width: 18px; height: 18px; }
.shot__zoom .svg-ico { width: 15px; height: 15px; }
.lightbox__nav .svg-ico { width: 24px; height: 24px; }
.lightbox__close .svg-ico { width: 19px; height: 19px; }

/* ---------------------------------------------------------------------------
 *  PROJECT WORKSTATION — corner brackets (tactical frame on the centerpiece)
 * ------------------------------------------------------------------------ */
.workstation::before,
.workstation::after {
  content: ""; position: absolute; z-index: 6; width: 16px; height: 16px;
  pointer-events: none; opacity: 0.55;
  transition: opacity var(--dur-base) var(--ease-out), border-color var(--dur-base) var(--ease-out);
}
.workstation::before { top: 12px; left: 12px; border-top: 1.5px solid var(--accent); border-left: 1.5px solid var(--accent); }
.workstation::after  { bottom: 12px; right: 12px; border-bottom: 1.5px solid var(--accent); border-right: 1.5px solid var(--accent); }
.workstation:hover::before, .workstation:hover::after { opacity: 1; }

/* ===========================================================================
 *  FUI / engineering layer — Swiss guides, wireframes, sector rail, frames
 *  Kept deliberately quiet: structure you feel before you notice it.
 * ======================================================================== */

/* Swiss column guides — thin vertical rules at the content column edges */
.grid-guides { position: fixed; inset: 0; z-index: var(--z-base); pointer-events: none; }
.grid-guides::before, .grid-guides::after {
  content: ""; position: absolute; top: 0; bottom: 0; width: 1px;
  background: linear-gradient(180deg, transparent, var(--hud-line) 9%, var(--hud-line) 91%, transparent);
}
.grid-guides::before { left: max(var(--gutter), calc(50% - var(--container) / 2)); }
.grid-guides::after  { right: max(var(--gutter), calc(50% - var(--container) / 2)); }

/* background wireframe objects — present, never loud */
.wire-field { position: fixed; inset: 0; z-index: var(--z-blobs); pointer-events: none; overflow: hidden; }
.wire { position: absolute; fill: none; stroke: var(--wire-line); stroke-width: 1; }
.wire--cube { width: clamp(130px, 15vw, 230px); top: 15%; right: 5%; transform-origin: 50% 50%; animation: wire-spin 52s linear infinite; }
.wire--grid { width: clamp(210px, 27vw, 400px); bottom: 9%; left: 3%; animation: wire-float 24s var(--ease-inout) infinite; }
@keyframes wire-spin { to { transform: rotate(360deg); } }
@keyframes wire-float { 0%, 100% { transform: translateY(0) skewX(-9deg); } 50% { transform: translateY(-16px) skewX(-9deg); } }

/* sector rail — a spatial index that follows the scroll and guides the eye */
.rail {
  position: fixed; right: clamp(6px, 1.2vw, 16px); top: 50%; transform: translateY(-50%);
  z-index: var(--z-topbar);
  display: flex; flex-direction: column; gap: 1px;
  padding: 6px 4px;
}
.rail__item {
  display: flex; align-items: center; justify-content: flex-end; gap: 10px;
  padding: 5px 4px; text-decoration: none; color: var(--text-faint);
  font-family: var(--font-mono); font-size: var(--fs-mono); letter-spacing: var(--tracking-mono);
  transition: color var(--dur-fast) var(--ease-out);
}
.rail__label {
  text-transform: uppercase; color: var(--text-low); white-space: nowrap;
  opacity: 0; transform: translateX(6px);
  transition: opacity var(--dur-base) var(--ease-out), transform var(--dur-base) var(--ease-out);
}
.rail__tick { width: 16px; height: 1px; background: currentColor; flex: none; transition: width var(--dur-base) var(--ease-out); }
.rail__num { width: 1.8em; text-align: right; }
.rail__item:hover { color: var(--text-mid); }
.rail__item:hover .rail__label { opacity: 1; transform: none; }
.rail__item[aria-current="true"] { color: var(--accent-primary); }
.rail__item[aria-current="true"] .rail__tick { width: 30px; box-shadow: 0 0 8px 0 var(--accent-primary); }
.rail__item[aria-current="true"] .rail__label { opacity: 1; transform: none; color: var(--text-hi); }

/* corner-bracket frame for key glass panels — uses child spans because
 * .glass already owns ::before/::after for its sheen/refraction */
.fui-frame__brk { position: absolute; z-index: 6; width: 14px; height: 14px; pointer-events: none;
  opacity: 0.5; transition: opacity var(--dur-base) var(--ease-out); }
.fui-frame__brk--tl { top: 12px; left: 12px; border-top: 1.5px solid var(--accent); border-left: 1.5px solid var(--accent); }
.fui-frame__brk--br { bottom: 12px; right: 12px; border-bottom: 1.5px solid var(--accent); border-right: 1.5px solid var(--accent); }
.glass:hover > .fui-frame__brk { opacity: 0.95; }

/* ---------------------------------------------------------------------------
 *  Light-theme touch-ups for the operational layer
 * ------------------------------------------------------------------------ */
:root[data-theme="light"] .id-frame__bar {
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.82), rgba(255, 255, 255, 0.5));
  color: var(--text-mid);
}
:root[data-theme="light"] .topbar__clock { background: rgba(255, 255, 255, 0.6); }