/* ═══════════════════════════════════════════════════════════════════
   NEXUS AI — Top Secret folder (classified terminal skin + login gate)
   Pairs with js/projects-top-secret.js. Scoped to .pf-tab--classified,
   [data-ts] on #pf-sheet / #hud-projects, and .ts-* elements.
   ═══════════════════════════════════════════════════════════════════ */

:root {
  --ts-red: #ff3b5c;
  --ts-red-hot: #ff1f45;
  --ts-red-soft: rgba(255, 59, 92, 0.14);
  --ts-red-line: rgba(255, 59, 92, 0.45);
  --ts-mono: ui-monospace, "SFMono-Regular", "Cascadia Mono", "Roboto Mono", Menlo, Consolas, monospace;
}

/* ── Tab: hazard pip + classified glow ── */
.pf-tab--classified .pf-tab-pip {
  background: repeating-linear-gradient(135deg, var(--ts-red) 0 3px, #1a0208 3px 6px);
  border: 1px solid var(--ts-red-line);
}
.pf-tab--classified.is-active {
  color: #ffd6dd;
  text-shadow: 0 0 6px rgba(255, 59, 92, 0.55);
  background: rgba(30, 4, 12, 0.72);
}
.pf-tab--classified.is-active::after {
  background: rgba(22, 4, 10, 0.98);
}
.pf-tab--classified.is-active .pf-tab-pip {
  animation: ts-pip 1.6s steps(2, jump-none) infinite;
}

/* ── Panel header goes red while the folder is selected ── */
.hud-projects[data-ts] .hud-mode {
  color: var(--ts-red);
  text-shadow: 0 0 8px rgba(255, 59, 92, 0.6);
  letter-spacing: 0.22em;
}
.hud-projects[data-ts] .hud-mode::before {
  content: "■ ";
  animation: ts-blink 1s steps(1) infinite;
}
.hud-projects[data-ts] .hud-led.is-live {
  background: var(--ts-red);
  box-shadow: 0 0 10px rgba(255, 59, 92, 0.8);
}

/* ── Sheet: CRT scanlines, red grid, corner brackets ── */
.pf-sheet[data-ts] {
  position: relative;
  --pf-sheet-bg: rgba(22, 4, 10, 0.7);
  background:
    radial-gradient(ellipse at 50% 40%, rgba(255, 59, 92, 0.08), transparent 70%),
    var(--pf-sheet-bg);
  border-color: var(--ts-red-line);
  box-shadow: inset 0 0 40px rgba(255, 30, 70, 0.08), 0 0 18px -8px var(--ts-red);
}
.pf-sheet[data-ts]::before {
  /* scanlines + soft flicker */
  content: "";
  position: absolute;
  inset: 0;
  z-index: 3;
  pointer-events: none;
  background: repeating-linear-gradient(0deg, rgba(255, 255, 255, 0.035) 0 1px, transparent 1px 3px);
  mix-blend-mode: screen;
  animation: ts-flicker 6s linear infinite;
}
.pf-sheet[data-ts]::after {
  /* HUD corner brackets */
  content: "";
  position: absolute;
  inset: 6px;
  z-index: 3;
  pointer-events: none;
  background:
    linear-gradient(var(--ts-red), var(--ts-red)) top left / 14px 1px no-repeat,
    linear-gradient(var(--ts-red), var(--ts-red)) top left / 1px 14px no-repeat,
    linear-gradient(var(--ts-red), var(--ts-red)) top right / 14px 1px no-repeat,
    linear-gradient(var(--ts-red), var(--ts-red)) top right / 1px 14px no-repeat,
    linear-gradient(var(--ts-red), var(--ts-red)) bottom left / 14px 1px no-repeat,
    linear-gradient(var(--ts-red), var(--ts-red)) bottom left / 1px 14px no-repeat,
    linear-gradient(var(--ts-red), var(--ts-red)) bottom right / 14px 1px no-repeat,
    linear-gradient(var(--ts-red), var(--ts-red)) bottom right / 1px 14px no-repeat;
  opacity: 0.7;
}
.pf-sheet[data-ts] .pf-nav {
  border-right-color: rgba(255, 59, 92, 0.16);
}
.pf-sheet[data-ts] .pf-nav-head,
.pf-sheet[data-ts] .pf-empty {
  font-family: var(--ts-mono);
  color: rgba(255, 170, 185, 0.72);
  letter-spacing: 0.08em;
}
.pf-sheet[data-ts] .pf-empty::before {
  content: "> ";
  color: var(--ts-red);
}
.pf-sheet[data-ts] .pf-empty::after {
  content: "_";
  color: var(--ts-red);
  animation: ts-blink 1s steps(1) infinite;
}

/* Locked: hide folder content behind the terminal */
.pf-sheet[data-ts="locked"] {
  min-height: 24rem;
  overflow: hidden;
}
.pf-sheet[data-ts="locked"] > .pf-nav,
.pf-sheet[data-ts="locked"] > .pf-entry {
  visibility: hidden;
}

/* ── Lock screen ── */
.ts-lock {
  position: absolute;
  inset: 0;
  z-index: 2;
  display: grid;
  place-items: center;
  padding: 1rem;
  overflow: auto;
  background: radial-gradient(ellipse at center, rgba(40, 4, 14, 0.55), rgba(8, 1, 4, 0.85));
  animation: ts-power-on 0.45s var(--ease, ease-out) both;
}
.ts-lock[hidden] { display: none; }
.ts-grid {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    linear-gradient(rgba(255, 59, 92, 0.06) 1px, transparent 1px) 0 0 / 28px 28px,
    linear-gradient(90deg, rgba(255, 59, 92, 0.06) 1px, transparent 1px) 0 0 / 28px 28px;
  mask-image: radial-gradient(ellipse at center, #000 30%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse at center, #000 30%, transparent 75%);
}
.ts-lock::after {
  /* slow sweep line */
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  height: 18%;
  top: -18%;
  pointer-events: none;
  background: linear-gradient(180deg, transparent, rgba(255, 59, 92, 0.07), transparent);
  animation: ts-sweep 4.5s linear infinite;
}

.ts-term {
  position: relative;
  width: min(25rem, 100%);
  padding: 1rem 1.15rem 0.95rem;
  font-family: var(--ts-mono);
  color: #ffc9d2;
  background: rgba(14, 2, 6, 0.86);
  border: 1px solid var(--ts-red-line);
  border-radius: 4px 12px 4px 12px;
  box-shadow: 0 0 0 1px rgba(255, 59, 92, 0.08), 0 0 28px -6px rgba(255, 30, 70, 0.55), inset 0 0 24px rgba(255, 30, 70, 0.08);
}
.ts-term-head {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding-bottom: 0.55rem;
  margin-bottom: 0.6rem;
  border-bottom: 1px dashed rgba(255, 59, 92, 0.3);
  font-family: var(--font-display);
  font-size: 0.46rem;
  letter-spacing: 0.16em;
  color: rgba(255, 190, 200, 0.7);
}
.ts-term-clr { margin-left: auto; color: var(--ts-red); }
.ts-led {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--ts-red);
  box-shadow: 0 0 8px var(--ts-red);
  animation: ts-blink 1.1s steps(1) infinite;
}
.ts-stamp {
  display: inline-block;
  margin: 0.1rem 0 0.55rem;
  padding: 0.18rem 0.6rem;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 0.95rem;
  letter-spacing: 0.32em;
  color: var(--ts-red);
  border: 2px solid var(--ts-red);
  transform: rotate(-2.5deg);
  text-shadow: 0 0 10px rgba(255, 59, 92, 0.55);
  box-shadow: 0 0 12px -2px rgba(255, 59, 92, 0.5);
}
.ts-boot {
  margin: 0 0 0.75rem;
  font-family: var(--ts-mono);
  font-size: 0.66rem;
  line-height: 1.5;
  color: rgba(255, 170, 185, 0.66);
  white-space: pre-wrap;
}
.ts-form { display: grid; gap: 0.55rem; }
.ts-field { display: grid; gap: 0.22rem; }
.ts-label {
  font-family: var(--font-display);
  font-size: 0.46rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: rgba(255, 190, 200, 0.7);
}
.ts-input-wrap {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0 0.55rem;
  background: rgba(30, 3, 10, 0.75);
  border: 1px solid rgba(255, 59, 92, 0.3);
  border-radius: 3px;
  transition: border-color 0.2s, box-shadow 0.2s;
}
.ts-input-wrap:focus-within {
  border-color: var(--ts-red);
  box-shadow: 0 0 0 1px rgba(255, 59, 92, 0.35), 0 0 14px -4px var(--ts-red);
}
.ts-prompt { color: var(--ts-red); font-size: 0.8rem; }
.ts-input {
  flex: 1;
  min-width: 0;
  padding: 0.5rem 0;
  font-family: var(--ts-mono);
  font-size: 0.85rem;
  letter-spacing: 0.06em;
  color: #ffe3e8;
  caret-color: var(--ts-red);
  background: transparent;
  border: 0;
  outline: none;
}
.ts-submit {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  margin-top: 0.25rem;
  padding: 0.62rem 1rem;
  font-family: var(--font-display);
  font-size: 0.56rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: #ffe3e8;
  background: linear-gradient(180deg, rgba(255, 59, 92, 0.22), rgba(255, 59, 92, 0.08));
  border: 1px solid var(--ts-red-line);
  border-radius: 3px 10px 3px 10px;
  cursor: pointer;
  transition: background 0.2s, box-shadow 0.2s, border-color 0.2s;
}
.ts-submit:hover,
.ts-submit:focus-visible {
  outline: none;
  border-color: var(--ts-red);
  background: linear-gradient(180deg, rgba(255, 59, 92, 0.34), rgba(255, 59, 92, 0.12));
  box-shadow: 0 0 16px -4px var(--ts-red);
}
.ts-submit-pip {
  width: 0.8rem;
  height: 0.3rem;
  border-radius: 0.2rem;
  background: var(--ts-red);
  box-shadow: 0 0 6px var(--ts-red);
}
.ts-status {
  margin-top: 0.7rem;
  min-height: 1.2em;
  font-size: 0.66rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: rgba(255, 170, 185, 0.7);
}
.ts-cursor { animation: ts-blink 1s steps(1) infinite; }
.ts-lock.is-error .ts-status { color: var(--ts-red-hot); text-transform: none; }
.ts-lock.is-error .ts-term { border-color: var(--ts-red-hot); }
.ts-term.is-shake { animation: ts-shake 0.42s cubic-bezier(0.36, 0.07, 0.19, 0.97) both; }

/* Granted: brief green confirm, then the terminal powers down */
.ts-lock.is-granted .ts-status { color: #3dff9a; }
.ts-lock.is-granted .ts-term {
  border-color: rgba(61, 255, 154, 0.6);
  box-shadow: 0 0 28px -6px rgba(61, 255, 154, 0.55);
  animation: ts-power-off 0.6s 0.15s ease-in forwards;
}

/* Re-lock chip once the folder is open */
.ts-relock {
  position: absolute;
  top: 0.45rem;
  right: 0.55rem;
  z-index: 4;
  padding: 0.28rem 0.6rem;
  font-family: var(--font-display);
  font-size: 0.44rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: rgba(255, 200, 208, 0.8);
  background: rgba(30, 3, 10, 0.8);
  border: 1px solid var(--ts-red-line);
  border-radius: 3px 8px 3px 8px;
  cursor: pointer;
}
.ts-relock:hover,
.ts-relock:focus-visible { color: #fff; border-color: var(--ts-red); outline: none; }
.ts-relock[hidden] { display: none; }

/* ── Wrong credentials: flashing red "access denied" across the screen ── */
.ts-denied {
  position: fixed;
  inset: 0;
  z-index: 260;
  display: grid;
  place-items: center;
  pointer-events: none;
  visibility: hidden;
  background: radial-gradient(ellipse at center, rgba(255, 20, 60, 0.18), rgba(120, 0, 20, 0.08) 55%, transparent 80%);
}
.ts-denied-text {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(2.2rem, 9vw, 7rem);
  letter-spacing: 0.12em;
  text-transform: lowercase;
  color: var(--ts-red-hot);
  text-shadow: 0 0 12px rgba(255, 31, 69, 0.9), 0 0 40px rgba(255, 31, 69, 0.6), 3px 0 0 rgba(0, 220, 255, 0.25), -3px 0 0 rgba(255, 0, 60, 0.5);
}
.ts-denied.is-on {
  animation: ts-denied-flash 1.6s steps(1, end) forwards;
}

/* ── Keyframes ── */
@keyframes ts-blink { 0%, 100% { opacity: 1; } 50% { opacity: 0; } }
@keyframes ts-pip { 0% { opacity: 1; } 50% { opacity: 0.35; } }
@keyframes ts-flicker {
  0%, 100% { opacity: 0.9; }
  47% { opacity: 0.9; }
  48% { opacity: 0.55; }
  49% { opacity: 1; }
  92% { opacity: 0.85; }
  93% { opacity: 0.6; }
}
@keyframes ts-sweep { to { top: 100%; } }
@keyframes ts-power-on {
  0% { opacity: 0; transform: scaleY(0.02); filter: brightness(3); }
  60% { opacity: 1; transform: scaleY(1.02); filter: brightness(1.4); }
  100% { opacity: 1; transform: none; filter: none; }
}
@keyframes ts-power-off {
  0% { transform: none; opacity: 1; }
  60% { transform: scale(1, 0.02); opacity: 1; filter: brightness(2.5); }
  100% { transform: scale(0, 0.02); opacity: 0; }
}
@keyframes ts-shake {
  10%, 90% { transform: translateX(-2px); }
  20%, 80% { transform: translateX(4px); }
  30%, 50%, 70% { transform: translateX(-7px); }
  40%, 60% { transform: translateX(7px); }
}
@keyframes ts-denied-flash {
  0% { visibility: visible; opacity: 1; }
  12% { visibility: hidden; }
  22% { visibility: visible; }
  36% { visibility: hidden; }
  46% { visibility: visible; }
  60% { visibility: hidden; }
  70% { visibility: visible; }
  92% { visibility: visible; opacity: 1; }
  100% { visibility: hidden; opacity: 0; }
}

@media (max-width: 760px) {
  .pf-sheet[data-ts="locked"] { min-height: 26rem; }
  .ts-term { padding: 0.85rem 0.85rem 0.8rem; }
  .ts-stamp { font-size: 0.8rem; }
}

@media (prefers-reduced-motion: reduce) {
  .pf-sheet[data-ts]::before,
  .ts-lock,
  .ts-lock::after,
  .ts-term.is-shake,
  .pf-tab--classified.is-active .pf-tab-pip { animation: none; }
  /* keep the denied flash (it's the error signal) but slower, fewer blinks */
  .ts-denied.is-on { animation: ts-denied-flash 2s steps(1, end) forwards; }
}