/* ============================================================
   RHYNO DRONE — COMPONENT LIBRARY
   Reusable, documented UI primitives. HUD / aerospace aesthetic.
   ============================================================ */

/* ---------- BUTTONS ---------- */
.btn {
  --btn-bg: var(--carbon-700);
  --btn-fg: var(--text);
  --btn-bd: var(--line-strong);
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 0.6em;
  padding: 0.85em 1.5em;
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--btn-fg);
  background: var(--btn-bg);
  border: 1px solid var(--btn-bd);
  border-radius: var(--radius);
  transition: background var(--dur-fast) var(--ease),
              color var(--dur-fast) var(--ease),
              border-color var(--dur-fast) var(--ease),
              transform var(--dur-fast) var(--ease),
              box-shadow var(--dur-fast) var(--ease);
  overflow: hidden;
  isolation: isolate;
}
.btn:hover { transform: translateY(-1px); }
.btn:active { transform: translateY(0); }
.btn .arr { transition: transform var(--dur) var(--ease); }
.btn:hover .arr { transform: translateX(4px); }

.btn--primary {
  --btn-bg: var(--signal);
  --btn-fg: var(--carbon-950);
  --btn-bd: var(--signal);
  font-weight: 600;
}
.btn--primary:hover {
  --btn-bg: var(--signal-bright);
}
/* sweep highlight */
.btn--primary::after {
  content: "";
  position: absolute; inset: 0; z-index: -1;
  background: linear-gradient(120deg, transparent 30%, rgba(255,255,255,0.35) 50%, transparent 70%);
  transform: translateX(-120%);
  transition: transform var(--dur-slow) var(--ease);
}
.btn--primary:hover::after { transform: translateX(120%); }

.btn--ghost { --btn-bg: transparent; --btn-bd: var(--line-strong); }
.btn--ghost:hover { --btn-bd: var(--signal); --btn-fg: var(--signal); }

.btn--outline-signal { --btn-bg: transparent; --btn-bd: var(--signal-line); --btn-fg: var(--signal); }
.btn--outline-signal:hover { --btn-bg: var(--signal-wash); --btn-bd: var(--signal); }

.btn--lg { padding: 1.05em 1.9em; font-size: var(--fs-sm); }
.btn--sm { padding: 0.6em 1em; font-size: var(--fs-micro); }
.btn--block { display: flex; width: 100%; justify-content: center; }

/* ---------- TAGS / BADGES / PILLS ---------- */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 0.5em;
  padding: 0.32em 0.7em;
  font-family: var(--font-mono);
  font-size: var(--fs-micro);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-dim);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--carbon-800);
}
.tag--signal { color: var(--signal); border-color: var(--signal-line); background: var(--signal-wash); }
.tag--hud { color: var(--hud); border-color: rgba(70,227,207,0.3); background: var(--hud-dim); }

.status {
  display: inline-flex; align-items: center; gap: 0.55em;
  font-family: var(--font-mono); font-size: var(--fs-micro);
  letter-spacing: 0.18em; text-transform: uppercase; color: var(--text-dim);
}
.status .dot {
  position: relative;
  width: 7px; height: 7px; border-radius: 50%;
  background: var(--hud);
}
.status .dot::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: 50%;
  background: var(--hud-glow);
  animation: pulse 2.4s var(--ease-in-out) infinite;
}
@keyframes pulse {
  0% { transform: scale(0.5); opacity: 1; }
  70% { transform: scale(3); opacity: 0; }
  100% { transform: scale(3); opacity: 0; }
}

/* ---------- HUD CARD (corner-ticked frame) ---------- */
.card {
  position: relative;
  background: linear-gradient(180deg, var(--carbon-800), var(--carbon-850));
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: var(--sp-5);
  transition: border-color var(--dur) var(--ease), transform var(--dur) var(--ease), background var(--dur) var(--ease);
}
.card:hover { border-color: var(--line-strong); }
/* corner ticks */
.card--hud::before,
.card--hud::after {
  content: "";
  position: absolute;
  width: var(--tick); height: var(--tick);
  border: 1px solid var(--signal);
  opacity: 0.55;
  transition: opacity var(--dur) var(--ease), width var(--dur) var(--ease), height var(--dur) var(--ease);
}
.card--hud::before { top: 8px; left: 8px; border-right: 0; border-bottom: 0; }
.card--hud::after { bottom: 8px; right: 8px; border-left: 0; border-top: 0; }
.card--hud:hover::before, .card--hud:hover::after { opacity: 1; width: 16px; height: 16px; }

.card__index {
  font-family: var(--font-mono);
  font-size: var(--fs-micro);
  color: var(--text-faint);
  letter-spacing: 0.18em;
}
.card__title {
  font-family: var(--font-display);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: -0.01em;
  font-size: var(--fs-lg);
  margin-block: 0.4em 0.5em;
  line-height: 1.05;
}
.card__body { color: var(--text-dim); font-size: var(--fs-sm); }

/* feature card icon frame */
.icon-frame {
  width: 46px; height: 46px;
  display: grid; place-items: center;
  border: 1px solid var(--signal-line);
  border-radius: var(--radius);
  color: var(--signal);
  background: var(--signal-wash);
}
.icon-frame svg { width: 22px; height: 22px; }

/* ---------- TELEMETRY / STAT READOUT ---------- */
.stat { display: flex; flex-direction: column; gap: 0.3em; }
.stat__value {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: var(--fs-2xl);
  line-height: 1;
  letter-spacing: -0.02em;
  font-variant-numeric: tabular-nums;
}
.stat__value .unit { font-size: 0.42em; color: var(--signal); margin-left: 0.2em; vertical-align: super; }
.stat__label {
  font-family: var(--font-mono);
  font-size: var(--fs-micro);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--text-faint);
}

/* ---------- DIVIDERS / DATA STRIP ---------- */
.rule { height: 1px; background: var(--line); border: 0; }
.rule--signal { background: linear-gradient(90deg, var(--signal), transparent); }

.datastrip {
  display: flex; align-items: center; gap: 0.8em;
  font-family: var(--font-mono); font-size: var(--fs-micro);
  letter-spacing: 0.2em; text-transform: uppercase; color: var(--text-faint);
}
.datastrip .seg { color: var(--text-dim); }
.datastrip .tk { color: var(--signal); }

/* ---------- INPUTS / FORM ---------- */
.field { display: flex; flex-direction: column; gap: 0.5em; }
.field label, .cselect__label {
  font-family: var(--font-mono); font-size: var(--fs-micro);
  letter-spacing: 0.16em; text-transform: uppercase; color: var(--text-dim);
}
.input, .textarea, .select {
  width: 100%;
  padding: 0.85em 1em;
  background: var(--carbon-850);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  color: var(--text);
  font-family: var(--font-mono);
  font-size: var(--fs-sm);
  /* render native UI (the option popup, calendar, scrollbars) in dark mode
     so the expanded dropdown matches the carbon theme instead of system white */
  color-scheme: dark;
  transition: border-color var(--dur-fast) var(--ease), background var(--dur-fast) var(--ease), box-shadow var(--dur-fast) var(--ease);
}
.input::placeholder, .textarea::placeholder { color: var(--text-ghost); }
.input:focus, .textarea:focus, .select:focus {
  outline: none;
  border-color: var(--signal);
  background: var(--carbon-800);
  box-shadow: 0 0 0 3px var(--signal-wash);
}
.textarea { resize: vertical; min-height: 120px; line-height: 1.6; }

/* Custom dropdown (native <select> option popups can't be themed on macOS) */
.cselect { position: relative; }
.cselect__trigger {
  width: 100%; display: flex; align-items: center; justify-content: space-between; gap: 1em;
  padding: 0.85em 1em; background: var(--carbon-850); border: 1px solid var(--line-strong);
  border-radius: var(--radius); color: var(--text); font-family: var(--font-mono); font-size: var(--fs-sm);
  text-align: left; cursor: pointer;
  transition: border-color var(--dur-fast) var(--ease), background var(--dur-fast) var(--ease), box-shadow var(--dur-fast) var(--ease);
}
.cselect__trigger:focus-visible { outline: none; border-color: var(--signal); background: var(--carbon-800); box-shadow: 0 0 0 3px var(--signal-wash); }
.cselect.is-open .cselect__trigger { border-color: var(--signal); background: var(--carbon-800); }
.cselect__caret {
  flex: none; width: 0; height: 0; border-left: 5px solid transparent; border-right: 5px solid transparent;
  border-top: 6px solid var(--signal); transition: transform var(--dur-fast) var(--ease);
}
.cselect.is-open .cselect__caret { transform: rotate(180deg); }
.cselect__list {
  position: absolute; z-index: 5; top: calc(100% + 6px); left: 0; right: 0; margin: 0; padding: 4px;
  list-style: none; background: var(--carbon-800); border: 1px solid var(--line-strong);
  border-radius: var(--radius); box-shadow: var(--shadow-2); max-height: 260px; overflow-y: auto;
  opacity: 0; transform: translateY(-4px); pointer-events: none;
  transition: opacity var(--dur-fast) var(--ease), transform var(--dur-fast) var(--ease);
}
.cselect.is-open .cselect__list { opacity: 1; transform: translateY(0); pointer-events: auto; }
.cselect__option {
  display: flex; align-items: center; gap: 0.6em; padding: 0.7em 0.9em; border-radius: var(--radius);
  font-family: var(--font-mono); font-size: var(--fs-sm); color: var(--text-dim); cursor: pointer;
  transition: background var(--dur-fast) var(--ease), color var(--dur-fast) var(--ease);
}
.cselect__option::before {
  content: ""; flex: none; width: 6px; height: 6px; background: var(--signal);
  opacity: 0; transform: scale(0.6); transition: opacity var(--dur-fast) var(--ease), transform var(--dur-fast) var(--ease);
}
.cselect__option:hover, .cselect__option.is-active { background: var(--signal-wash); color: var(--text); }
.cselect__option[aria-selected="true"] { color: var(--signal); }
.cselect__option[aria-selected="true"]::before { opacity: 1; transform: scale(1); }

/* Custom date picker (native date popups can't be themed / Safari has none) */
.cdate { position: relative; }
.cdate__input { padding-right: 2.8em; }
.cdate__toggle {
  position: absolute; top: 0; right: 0; height: 100%; width: 2.8em; display: grid; place-items: center;
  background: none; border: 0; color: var(--signal); cursor: pointer;
}
.cdate__icon { position: relative; width: 14px; height: 13px; border: 1.5px solid currentColor; border-radius: 1px; }
.cdate__icon::before { content: ""; position: absolute; top: -4px; left: 2px; right: 2px; height: 4px; border-left: 1.5px solid currentColor; border-right: 1.5px solid currentColor; }
.cdate__icon::after { content: ""; position: absolute; top: 2.5px; left: -1.5px; right: -1.5px; height: 1.5px; background: currentColor; }
.cdate__pop {
  position: absolute; z-index: 6; top: calc(100% + 6px); left: 0; width: min(300px, 100%); padding: 12px;
  background: var(--carbon-800); border: 1px solid var(--line-strong); border-radius: var(--radius); box-shadow: var(--shadow-2);
}
.cdate__pop[hidden] { display: none; }
.cdate__head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 10px; }
.cdate__title { font-family: var(--font-mono); font-size: var(--fs-xs); letter-spacing: 0.1em; text-transform: uppercase; color: var(--text); }
.cdate__nav {
  width: 28px; height: 28px; display: grid; place-items: center; background: var(--carbon-700);
  border: 1px solid var(--line-strong); border-radius: var(--radius); color: var(--text-dim); cursor: pointer; line-height: 1;
  transition: color var(--dur-fast) var(--ease), border-color var(--dur-fast) var(--ease);
}
.cdate__nav:hover { color: var(--signal); border-color: var(--signal-line); }
.cdate__dow, .cdate__days { display: grid; grid-template-columns: repeat(7, 1fr); gap: 2px; }
.cdate__dow { margin-bottom: 4px; }
.cdate__dow span { text-align: center; font-family: var(--font-mono); font-size: var(--fs-micro); color: var(--text-faint); padding: 4px 0; }
.cdate__day {
  aspect-ratio: 1; display: grid; place-items: center; background: none; border: 1px solid transparent; border-radius: var(--radius);
  color: var(--text-dim); font-family: var(--font-mono); font-size: var(--fs-sm); cursor: pointer;
  transition: background var(--dur-fast) var(--ease), color var(--dur-fast) var(--ease), border-color var(--dur-fast) var(--ease);
}
.cdate__day.is-blank { pointer-events: none; }
.cdate__day:hover:not(:disabled) { background: var(--signal-wash); color: var(--text); }
.cdate__day:disabled { opacity: 0.28; cursor: default; }
.cdate__day.is-today { border-color: var(--signal-line); color: var(--text); }
.cdate__day.is-selected { background: var(--signal); border-color: var(--signal); color: #fff; }
.cdate__day:focus-visible { outline: none; box-shadow: 0 0 0 2px var(--signal-wash); }

.form-status { margin: 0; font-family: var(--font-mono); font-size: var(--fs-micro); letter-spacing: 0.04em; line-height: 1.5; padding: 0.75em 1em; border: 1px solid var(--line-strong); border-left-width: 2px; border-radius: var(--radius); }
.form-status--ok { color: var(--hud); border-left-color: var(--hud); background: var(--hud-dim); }
.form-status--error { color: var(--danger); border-left-color: var(--danger); background: rgba(255, 77, 77, 0.08); }

/* ---------- ACCORDION ---------- */
.accordion { border-top: 1px solid var(--line); }
.accordion__item { border-bottom: 1px solid var(--line); }
.accordion__head {
  width: 100%; display: flex; align-items: center; justify-content: space-between; gap: 1em;
  padding: 1.3em 0; text-align: left;
}
.accordion__q {
  font-family: var(--font-display); font-weight: 600; text-transform: uppercase;
  letter-spacing: -0.005em; font-size: var(--fs-md); transition: color var(--dur-fast) var(--ease);
}
.accordion__head:hover .accordion__q { color: var(--signal); }
.accordion__sign {
  flex: none; width: 26px; height: 26px; position: relative;
  border: 1px solid var(--line-strong); border-radius: var(--radius);
  transition: border-color var(--dur-fast) var(--ease);
}
.accordion__sign::before, .accordion__sign::after {
  content: ""; position: absolute; inset: 50% 6px auto 6px; height: 1px; background: var(--signal); top: 50%;
}
.accordion__sign::after { transform: rotate(90deg); transition: transform var(--dur) var(--ease); }
.accordion__item[data-open="true"] .accordion__sign::after { transform: rotate(0); }
.accordion__item[data-open="true"] .accordion__sign { border-color: var(--signal); }
.accordion__panel {
  display: grid; grid-template-rows: 0fr;
  transition: grid-template-rows var(--dur) var(--ease);
}
.accordion__item[data-open="true"] .accordion__panel { grid-template-rows: 1fr; }
.accordion__panel > div { overflow: hidden; }
.accordion__panel p { color: var(--text-dim); padding-bottom: 1.4em; max-width: 60ch; }

/* ---------- SPEC TABLE ---------- */
.spec { width: 100%; border-collapse: collapse; font-size: var(--fs-sm); }
.spec tr { border-bottom: 1px solid var(--line); }
.spec th {
  text-align: left; padding: 1em 1em 1em 0; width: 42%;
  font-family: var(--font-mono); font-size: var(--fs-micro); letter-spacing: 0.14em;
  text-transform: uppercase; color: var(--text-faint); font-weight: 500; vertical-align: top;
}
.spec td { padding: 1em 0; color: var(--text); font-family: var(--font-mono); }
.spec tr:hover td { color: var(--signal); }

/* ---------- MEDIA FRAME (HUD-framed image) ---------- */
.media {
  position: relative; overflow: hidden; border: 1px solid var(--line);
  border-radius: var(--radius); background: var(--carbon-850);
}
.media img { width: 100%; height: 100%; object-fit: cover; transition: transform var(--dur-slow) var(--ease), filter var(--dur-slow) var(--ease); }
.media video { display: block; width: 100%; height: 100%; object-fit: cover; }
.media--video { aspect-ratio: 16 / 9; }
.media--zoom:hover img { transform: scale(1.05); }
.media__tag {
  position: absolute; top: 10px; left: 10px; z-index: 2;
}
.media__reticle {
  position: absolute; inset: 0; pointer-events: none; z-index: 2;
  opacity: 0; transition: opacity var(--dur) var(--ease);
}
.media:hover .media__reticle { opacity: 1; }
.media__reticle::before, .media__reticle::after {
  content: ""; position: absolute; background: var(--signal);
}
.media__reticle::before { left: 50%; top: 12px; bottom: 12px; width: 1px; opacity: 0.35; }
.media__reticle::after { top: 50%; left: 12px; right: 12px; height: 1px; opacity: 0.35; }
/* corner brackets for media */
.media__corners span {
  position: absolute; width: 14px; height: 14px; border: 1.5px solid var(--text); opacity: 0.7; z-index: 2;
}
.media__corners span:nth-child(1) { top: 8px; left: 8px; border-right: 0; border-bottom: 0; }
.media__corners span:nth-child(2) { top: 8px; right: 8px; border-left: 0; border-bottom: 0; }
.media__corners span:nth-child(3) { bottom: 8px; left: 8px; border-right: 0; border-top: 0; }
.media__corners span:nth-child(4) { bottom: 8px; right: 8px; border-left: 0; border-top: 0; }
.media__caption {
  position: absolute; bottom: 0; left: 0; right: 0; z-index: 2;
  padding: 2.4em 1em 0.9em; display: flex; justify-content: space-between; align-items: end; gap: 1em;
  font-family: var(--font-mono); font-size: var(--fs-micro); letter-spacing: 0.1em; text-transform: uppercase;
  background: linear-gradient(0deg, rgba(6,7,8,0.92), transparent);
}

/* ---------- SECTION HEADER ---------- */
.sec-head { display: flex; flex-direction: column; gap: 1rem; margin-bottom: clamp(2rem, 5vw, 4rem); }
.sec-head__title {
  font-family: var(--font-display); font-weight: 800; text-transform: uppercase;
  font-size: var(--fs-xl); line-height: 1; letter-spacing: -0.02em; max-width: 18ch;
}
.sec-head__meta { font-family: var(--font-mono); font-size: var(--fs-micro); color: var(--text-faint); letter-spacing: 0.2em; text-transform: uppercase; }

/* ---------- MARQUEE ---------- */
.marquee { overflow: hidden; border-block: 1px solid var(--line); padding-block: 1.1rem; -webkit-mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent); mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent); }
.marquee__track { display: flex; width: max-content; animation: scroll-x 61s linear infinite; }
.marquee:hover .marquee__track { animation-play-state: paused; }
.marquee__item { font-family: var(--font-display); font-weight: 700; text-transform: uppercase; font-size: var(--fs-lg); letter-spacing: 0.02em; color: var(--text-ghost); display: inline-flex; align-items: center; gap: 3rem; padding-right: 3rem; white-space: nowrap; }
.marquee__item .star { color: var(--signal); font-size: 0.7em; }
@keyframes scroll-x { to { transform: translateX(-50%); } }

/* ---------- LINK W/ UNDERLINE WIPE ---------- */
.link {
  font-family: var(--font-mono); font-size: var(--fs-xs); letter-spacing: 0.12em; text-transform: uppercase;
  color: var(--text); position: relative; display: inline-flex; gap: 0.5em; align-items: center; padding-bottom: 2px;
}
.link::after { content: ""; position: absolute; left: 0; bottom: 0; height: 1px; width: 100%; background: var(--signal); transform: scaleX(0); transform-origin: left; transition: transform var(--dur) var(--ease); }
.link:hover { color: var(--signal); }
.link:hover::after { transform: scaleX(1); }