@font-face {
  font-family: "JetBrains Mono";
  font-style: normal;
  font-weight: 100 800;
  font-display: swap;
  src: url("/assets/fonts/jetbrains-mono-latin.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+2074, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

@font-face {
  font-family: "JetBrains Mono";
  font-style: italic;
  font-weight: 100 800;
  font-display: swap;
  src: url("/assets/fonts/jetbrains-mono-latin-italic.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+2074, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

:root {
  --paper: #ece1c8;
  --paper-deep: #ddcfae;
  --paper-hot: #fff5dc;
  --ink: #0a0a0a;
  --ink-soft: #1a1612;
  --ink-faint: rgba(10, 10, 10, 0.75);
  --ink-line: rgba(10, 10, 10, 0.22);
  --ink-rule: rgba(10, 10, 10, 0.12);
  --accent: #d93025;
  --accent-deep: #6f1715;
  --mono: "JetBrains Mono", ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace;
}

* {
  box-sizing: border-box;
}

[hidden] {
  display: none !important;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  white-space: nowrap;
}

html {
  min-height: 100%;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--mono);
  font-feature-settings: "ss01", "cv02", "cv11";
  font-variant-ligatures: none;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  min-height: 100vh;
  font-size: 15px;
  line-height: 1.55;
  background:
    repeating-linear-gradient(
      to bottom,
      transparent 0,
      transparent calc(1.5rem - 1px),
      var(--ink-rule) calc(1.5rem - 1px),
      var(--ink-rule) 1.5rem
    );
}

::selection {
  background: var(--ink);
  color: var(--paper-hot);
}

a {
  color: var(--ink);
  text-decoration: underline;
  text-underline-offset: 0.18em;
  text-decoration-thickness: 1px;
}

/* ------ Watermark ------ */
.watermark {
  position: fixed;
  inset: 0;
  display: grid;
  place-items: center;
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
  user-select: none;
}

.watermark span {
  font-size: clamp(4rem, 14vw, 11rem);
  font-weight: 800;
  letter-spacing: 0.12em;
  color: var(--accent);
  opacity: 0.06;
  white-space: nowrap;
  transform: rotate(-22deg);
  text-transform: uppercase;
}

/* ------ Classification bar ------ */
.classified-bar {
  position: relative;
  z-index: 2;
  border-bottom: 1px solid var(--ink);
  background: var(--ink);
  color: var(--paper);
}

.classified-bar__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.2rem;
  width: min(72rem, 100%);
  margin: 0 auto;
  padding: 0.72rem clamp(1rem, 4vw, 2.4rem);
  font-size: 0.74rem;
  font-weight: 700;
  letter-spacing: 0.22em;
  text-transform: uppercase;
}

.classified-bar__brand {
  display: inline-flex;
  align-items: baseline;
  gap: 0.6rem;
}

.classified-bar__brand strong {
  font-size: 0.9rem;
  font-weight: 800;
  letter-spacing: 0.32em;
}

.classified-bar__brand span {
  color: rgba(236, 225, 200, 0.55);
}

.classified-bar__stamp {
  display: inline-flex;
  align-items: center;
  padding: 0.25rem 0.55rem;
  border: 1px solid var(--accent);
  color: var(--accent);
  letter-spacing: 0.28em;
}

/* ------ Dossier strip ------ */
.dossier {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0;
  width: min(72rem, 100%);
  margin: 0 auto;
  padding: 0;
  border-bottom: 1px solid var(--ink);
  background: var(--paper-deep);
  font-size: 0.7rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  list-style: none;
}

.dossier > div {
  padding: 0.7rem clamp(0.8rem, 2vw, 1.4rem);
  border-right: 1px solid var(--ink-line);
}

.dossier > div:last-child {
  border-right: 0;
}

.dossier dt {
  margin: 0 0 0.18rem;
  color: var(--ink-faint);
  font-size: 0.62rem;
  font-weight: 600;
  letter-spacing: 0.2em;
}

.dossier dd {
  margin: 0;
  font-weight: 700;
  letter-spacing: 0.08em;
  word-break: break-all;
}

/* ------ Document shell ------ */
.document {
  position: relative;
  z-index: 1;
  width: min(72rem, 100%);
  margin: 0 auto;
  padding: clamp(1.2rem, 3vw, 2.4rem) clamp(1rem, 4vw, 2.4rem);
}

.lede {
  max-width: 48ch;
  margin: 0 0 1.6rem;
  color: var(--ink-soft);
  font-size: 0.95rem;
  line-height: 1.6;
}

.lede em {
  background: var(--ink);
  color: var(--paper-hot);
  font-style: normal;
  padding: 0 0.32rem;
}

/* ------ Panel ------ */
.panel {
  position: relative;
  border: 1px solid var(--ink);
  background: var(--paper);
  box-shadow: 6px 6px 0 0 var(--ink);
  animation: drop-in 380ms cubic-bezier(0.2, 0.7, 0.2, 1.05) both;
}

@keyframes drop-in {
  from {
    transform: translate(-4px, -4px);
    box-shadow: 0 0 0 0 var(--ink);
  }
  to {
    transform: translate(0, 0);
    box-shadow: 6px 6px 0 0 var(--ink);
  }
}

.panel__header {
  display: flex;
  align-items: stretch;
  justify-content: space-between;
  gap: 1rem;
  border-bottom: 1px solid var(--ink);
}

.panel__step {
  display: flex;
  align-items: center;
  padding: 0.6rem 1rem;
  border-right: 1px solid var(--ink);
  background: var(--ink);
  color: var(--paper-hot);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.24em;
  text-transform: uppercase;
}

.panel__title {
  margin: 0;
  flex: 1;
  align-self: center;
  padding: 0.6rem clamp(0.8rem, 2vw, 1.4rem);
  font-family: var(--mono);
  font-size: clamp(1.3rem, 3.4vw, 2rem);
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  line-height: 1;
}

.panel__title-glyph {
  color: var(--accent);
  margin-right: 0.4em;
}

.panel__body {
  padding: clamp(1rem, 3vw, 1.6rem) clamp(1rem, 3vw, 1.6rem) clamp(1.2rem, 3vw, 1.8rem);
}

/* ------ Form ------ */
.secret-form {
  display: grid;
  gap: 0.8rem;
}

label,
.label {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  margin: 0;
  color: var(--ink);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.22em;
  text-transform: uppercase;
}

label::before,
.label::before {
  content: ">";
  color: var(--accent);
  font-size: 0.95rem;
  letter-spacing: 0;
}

textarea,
input {
  width: 100%;
  margin: 0;
  padding: 0.85rem 0.9rem;
  border: 1px solid var(--ink);
  border-radius: 0;
  background: var(--paper-hot);
  color: var(--ink);
  font: 0.95rem/1.5 var(--mono);
  outline: 0;
  caret-color: var(--accent);
  transition: background 80ms linear, color 80ms linear;
}

textarea {
  min-height: 11.5rem;
  resize: vertical;
  background-color: var(--paper-hot);
  background-image: repeating-linear-gradient(
    to bottom,
    transparent 0,
    transparent calc(1.5em - 1px),
    var(--ink-line) calc(1.5em - 1px),
    var(--ink-line) 1.5em
  );
  background-attachment: local;
  line-height: 1.5em;
}

textarea::placeholder,
input::placeholder {
  color: var(--ink-faint);
  font-style: italic;
}

textarea:focus,
input:focus {
  background: var(--ink);
  color: var(--paper-hot);
  border-color: var(--accent);
  box-shadow: 0 0 0 2px var(--accent);
  caret-color: var(--paper-hot);
  background-image: none;
}

textarea:focus::placeholder,
input:focus::placeholder {
  color: rgba(236, 225, 200, 0.4);
}

.form-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-top: 0.2rem;
  padding-top: 0.8rem;
  border-top: 1px dashed var(--ink-line);
}

#char-count {
  display: inline-flex;
  gap: 0.5rem;
  align-items: baseline;
  color: var(--ink-faint);
  font-size: 0.7rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

#char-count::before {
  content: "BYTES";
  font-weight: 700;
  color: var(--ink);
}

/* ------ Buttons ------ */
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  margin: 0;
  padding: 0.8rem 1.1rem;
  border: 1px solid var(--ink);
  border-radius: 0;
  background: var(--paper-hot);
  color: var(--ink);
  font-family: var(--mono);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  cursor: pointer;
  transition: transform 60ms linear, background 60ms linear, color 60ms linear,
    box-shadow 60ms linear;
}

.button::before {
  content: "//";
  color: var(--accent);
  letter-spacing: 0;
}

.button:hover:not(:disabled) {
  background: var(--ink);
  color: var(--paper-hot);
}

.button:hover:not(:disabled)::before {
  color: var(--paper-hot);
}

.button:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

.button:active:not(:disabled) {
  transform: translate(2px, 2px);
}

.button:disabled {
  cursor: not-allowed;
  opacity: 0.5;
  filter: grayscale(0.6);
}

.button.primary {
  background: var(--ink);
  color: var(--paper-hot);
  border-color: var(--ink);
  box-shadow: 4px 4px 0 0 var(--accent);
}

.button.primary::before {
  color: var(--accent);
}

.button.primary:hover:not(:disabled) {
  background: var(--accent);
  color: var(--paper-hot);
  border-color: var(--accent);
  box-shadow: 4px 4px 0 0 var(--ink);
}

.button.primary:hover:not(:disabled)::before {
  color: var(--paper-hot);
}

.button.primary:active:not(:disabled) {
  box-shadow: 2px 2px 0 0 var(--ink);
}

.button.wide {
  width: 100%;
  padding: 1rem 1.1rem;
  font-size: 0.86rem;
  letter-spacing: 0.28em;
}

/* ------ Result card ------ */
.result-card {
  margin-top: 1.5rem;
  border: 1px solid var(--ink);
  background: var(--paper-deep);
  animation: drop-in 320ms cubic-bezier(0.2, 0.7, 0.2, 1.05) both;
}

.result-card__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.5rem 0.9rem;
  border-bottom: 1px solid var(--ink);
  background: var(--paper-hot);
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.24em;
  text-transform: uppercase;
}

.result-card__stamp {
  color: var(--accent);
  border: 1px solid var(--accent);
  padding: 0.1rem 0.45rem;
  letter-spacing: 0.3em;
  animation: stamp-land 380ms 80ms cubic-bezier(0.4, 1.4, 0.5, 1) both;
}

@keyframes stamp-land {
  0% {
    transform: rotate(-12deg) scale(2.4);
    opacity: 0;
  }
  60% {
    transform: rotate(-3deg) scale(1.05);
    opacity: 1;
  }
  100% {
    transform: rotate(-2deg) scale(1);
    opacity: 1;
  }
}

.result-card__body {
  padding: 0.9rem;
}

.copy-row {
  display: flex;
  gap: 0;
  align-items: stretch;
  margin: 0.5rem 0 0;
}

.copy-row input {
  flex: 1 1 auto;
  min-width: 0;
  border-right: 0;
  font-size: 0.8rem;
}

.copy-row .button {
  flex: 0 0 auto;
}

.expiry,
.warning {
  display: flex;
  align-items: baseline;
  gap: 0.5rem;
  margin: 0.85rem 0 0;
  font-size: 0.78rem;
  letter-spacing: 0.06em;
}

.expiry {
  color: var(--ink-faint);
  font-style: italic;
}

.expiry::before {
  content: "»";
  font-style: normal;
  color: var(--accent);
  font-weight: 700;
}

.warning {
  position: relative;
  padding: 0.55rem 0.7rem;
  background: var(--accent);
  color: var(--paper-hot);
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.warning::before {
  content: "!";
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1.05rem;
  height: 1.05rem;
  background: var(--paper-hot);
  color: var(--accent);
  font-weight: 800;
}

/* ------ Reveal panel specifics ------ */
.reveal-panel .panel__step {
  background: var(--accent);
  color: var(--paper-hot);
}

.reveal-panel .panel__title-glyph {
  color: var(--ink);
}

.secret-output-group {
  position: relative;
  margin: 1.1rem 0 0.9rem;
}

.secret-output-group::before {
  content: "DECRYPTED PAYLOAD »";
  position: absolute;
  top: -0.62rem;
  left: 0.7rem;
  padding: 0 0.4rem;
  background: var(--paper);
  color: var(--accent);
  font-size: 0.62rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  z-index: 1;
  border: 1px solid var(--accent);
}

.secret-output {
  margin: 0;
  padding: 1rem 1.1rem;
  border: 1px solid var(--ink);
  background: var(--ink);
  color: var(--paper-hot);
  font: 0.94rem/1.55 var(--mono);
  white-space: pre-wrap;
  word-break: break-word;
  max-height: 26rem;
  overflow: auto;
}

.declassified-stamp {
  position: absolute;
  top: 1rem;
  right: 1rem;
  padding: 0.45rem 0.9rem;
  border: 2px solid var(--accent);
  color: var(--accent);
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  transform: rotate(-6deg);
  animation: stamp-land 420ms 60ms cubic-bezier(0.4, 1.4, 0.5, 1) both;
  pointer-events: none;
}

/* ------ Status toast ------ */
.status {
  position: fixed;
  left: 50%;
  bottom: 1.2rem;
  z-index: 5;
  max-width: min(34rem, calc(100% - 2rem));
  padding: 0;
  border: 1px solid transparent;
  background: transparent;
  color: var(--paper-hot);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  transform: translate(-50%, 1rem);
  opacity: 0;
  pointer-events: none;
  transition: opacity 140ms linear, transform 140ms linear, padding 140ms linear,
    border-color 140ms linear;
}

.status:not(:empty) {
  padding: 0.7rem 0.9rem;
  border-color: var(--ink);
  opacity: 1;
  transform: translate(-50%, 0);
}

.status[data-kind="info"] {
  background: var(--ink);
}

.status[data-kind="ok"] {
  background: var(--ink);
  box-shadow: 4px 4px 0 0 var(--accent);
}

.status[data-kind="error"] {
  background: var(--accent);
  box-shadow: 4px 4px 0 0 var(--ink);
}

/* ------ Version tag ------ */
.version-tag {
  position: fixed;
  left: max(0.85rem, env(safe-area-inset-left));
  bottom: max(0.65rem, env(safe-area-inset-bottom));
  z-index: 4;
  max-width: min(26rem, calc(100% - 1.7rem));
  color: var(--ink-faint);
  font-size: 0.62rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  line-height: 1.3;
  text-transform: uppercase;
  word-break: break-all;
  pointer-events: none;
}

/* ------ Footer ------ */
.footer-bar {
  position: relative;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  width: min(72rem, 100%);
  margin: 0 auto;
  padding: 0.8rem clamp(1rem, 4vw, 2.4rem);
  border-top: 1px solid var(--ink);
  font-size: 0.66rem;
  font-weight: 600;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--ink-faint);
}

.footer-bar::before,
.footer-bar::after {
  content: "";
  flex: 1 0 1rem;
  height: 1px;
  background: var(--ink-line);
}

.footer-bar > span {
  white-space: nowrap;
}

/* ------ Mobile ------ */
@media (max-width: 720px) {
  body {
    background-size: 100% 1.4rem;
  }

  .classified-bar__inner {
    gap: 0.6rem;
    padding: 0.4rem 0.85rem;
    font-size: 0.6rem;
    letter-spacing: 0.16em;
  }

  .classified-bar__brand {
    gap: 0.4rem;
    min-width: 0;
  }

  .classified-bar__brand strong {
    font-size: 0.78rem;
    letter-spacing: 0.24em;
  }

  .classified-bar__brand span {
    display: none;
  }

  .classified-bar__stamp {
    flex-shrink: 0;
    padding: 0.15rem 0.4rem;
    font-size: 0.6rem;
    letter-spacing: 0.18em;
  }

  .dossier {
    grid-template-columns: 1fr 1fr;
  }

  .dossier > div {
    padding: 0.4rem 0.7rem;
    border-right: 1px solid var(--ink-line);
    border-bottom: 0;
    min-width: 0;
  }

  .dossier > div:nth-child(2),
  .dossier > div:nth-child(3) {
    display: none;
  }

  .dossier > div:nth-child(4) {
    border-right: 0;
  }

  .dossier dt {
    margin-bottom: 0.1rem;
    font-size: 0.55rem;
    letter-spacing: 0.18em;
  }

  .dossier dd {
    font-size: 0.66rem;
    letter-spacing: 0.06em;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    word-break: normal;
  }

  .document {
    padding: 1rem 0.85rem 1.4rem;
  }

  .panel__header {
    flex-direction: column;
    align-items: stretch;
  }

  .panel__step {
    border-right: 0;
    border-bottom: 1px solid var(--ink);
    justify-content: flex-start;
    padding: 0.4rem 0.85rem;
    font-size: 0.66rem;
    letter-spacing: 0.2em;
  }

  .panel__title {
    padding: 0.7rem 0.85rem;
    font-size: 1.4rem;
  }

  .panel__body {
    padding: 0.9rem 0.85rem 1.05rem;
  }

  .copy-row {
    flex-direction: column;
  }

  .copy-row input {
    border-right: 1px solid var(--ink);
    border-bottom: 0;
  }

  .form-footer {
    flex-direction: column;
    align-items: stretch;
    gap: 0.7rem;
  }

  .footer-bar {
    flex-direction: column;
    gap: 0.4rem;
    padding: 0.6rem 0.85rem;
    text-align: center;
  }

  .footer-bar::before,
  .footer-bar::after {
    display: none;
  }
}

/* ------ Reduced motion ------ */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    transition-duration: 0.001ms !important;
  }
}