/*
 * DEAD DROP — "chrome" skin (M5): the website + everything OUTSIDE the chat terminal. Original
 * design in the mid-90s beveled-dark-OS genre, dialed up: a thick glossy double-bevel window
 * frame in a cool blue-gray "platinum" tone, content recessed into a well, a beveled scrollbar
 * (arrows + raised thumb), a bottom-right grow box, a pronounced raised menu bar, a faint-texture
 * title bar with a centered plate and rounded widgets, and a Chicago-inspired bitmap font. Our
 * palette, tied to the chat blue. An homage to the era, not a copy of any product's design.
 *
 * Chicago is Apple's proprietary font; the chrome uses an openly-licensed classic-bitmap face
 * (Silkscreen). Load it at the app entry:
 *   <link href="https://fonts.googleapis.com/css2?family=Silkscreen:wght@400;700&display=swap" rel="stylesheet">
 */

:root {
  --dd-desk: #07070c;
  --dd-grid: rgba(64, 196, 208, 0.16);
  --dd-grid-strong: rgba(64, 196, 208, 0.30);

  --dd-chrome-ink: #dfe3ee;
  --dd-chrome-dim: #8e93a6;
  --dd-select: #2a52d6;
  --dd-select-ink: #eef2ff;

  --dd-radius: 18px;
  --dd-radius-sm: 9px;

  /* Cool blue-gray platinum surfaces. */
  --dd-face: linear-gradient(180deg, #353a4b 0%, #2c3040 14%, #252836 60%, #1c1e29 100%);
  --dd-face-hot: linear-gradient(180deg, #3f4456 0%, #313646 16%, #282c3a 100%);
  --dd-rim: #07070c;

  /* Sharp specular gradient for the menu + title bars: a bright highlight band across the top
     that drops crisply (the 14%->15% step) into a dark body. Glossy extruded-metal look. */
  --dd-bar: linear-gradient(180deg, #5b6079 0%, #474c60 14%, #2c3142 15%, #232735 60%, #181b25 100%);

  /* Thick glossy convex bevel. */
  --dd-bevel: inset 0 2px 0 rgba(255, 255, 255, 0.28),
    inset 0 -3px 5px rgba(0, 0, 0, 0.65),
    inset 2px 0 0 rgba(255, 255, 255, 0.08),
    inset -2px 0 0 rgba(0, 0, 0, 0.5),
    0 4px 11px rgba(0, 0, 0, 0.55);
  --dd-bevel-pressed: inset 0 2px 5px rgba(0, 0, 0, 0.65), inset 0 -1px 0 rgba(255, 255, 255, 0.1);
  --dd-well: inset 0 3px 6px rgba(0, 0, 0, 0.7), inset 0 -1px 0 rgba(255, 255, 255, 0.06);
  /* Inner groove between frame sections (the second bevel). */
  --dd-groove: inset 0 1px 0 rgba(0, 0, 0, 0.6), inset 0 2px 0 rgba(255, 255, 255, 0.08);
  --dd-texture: repeating-linear-gradient(0deg, rgba(255, 255, 255, 0.05) 0 1px, transparent 1px 4px);

  /* Match the chat terminal's monospace so chrome and chat share one typeface (clean, not pixelated). */
  --dd-chrome-font: ui-monospace, "Cascadia Mono", "DejaVu Sans Mono", "Courier New", monospace;
}

.dd-raised {
  border-radius: var(--dd-radius);
  background: var(--dd-face);
  border: 1px solid var(--dd-rim);
  box-shadow: var(--dd-bevel);
}
.dd-well {
  border-radius: var(--dd-radius-sm);
  background: #12121a;
  box-shadow: var(--dd-well);
}

/* Desktop. */
.dd-desk {
  position: relative;
  display: flex;
  flex-direction: column;
  min-height: 100dvh;
  background: var(--dd-desk);
  color: var(--dd-chrome-ink);
  font-family: var(--dd-chrome-font);
  overflow: hidden;
}
/* The area the window(s) sit in, below the menu bar. */
.dd-stage {
  position: relative;
  z-index: 1;
  flex: 1;
  min-height: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
  padding: 16px 14px calc(env(safe-area-inset-bottom) + 16px);
}
.dd-desk::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background:
    repeating-linear-gradient(90deg, var(--dd-grid) 0 1px, transparent 1px 44px),
    repeating-linear-gradient(0deg, var(--dd-grid) 0 1px, transparent 1px 44px);
  -webkit-mask-image: linear-gradient(transparent 0%, rgba(0, 0, 0, 0.5) 60%, #000 100%);
  mask-image: linear-gradient(transparent 0%, rgba(0, 0, 0, 0.5) 60%, #000 100%);
}
.dd-desk::after {
  content: "";
  position: fixed;
  left: -25%;
  right: -25%;
  bottom: 0;
  height: 46vh;
  pointer-events: none;
  background:
    repeating-linear-gradient(90deg, var(--dd-grid-strong) 0 1px, transparent 1px 56px),
    repeating-linear-gradient(0deg, var(--dd-grid-strong) 0 1px, transparent 1px 56px);
  transform: perspective(340px) rotateX(62deg);
  transform-origin: center bottom;
  -webkit-mask-image: linear-gradient(transparent, #000 70%);
  mask-image: linear-gradient(transparent, #000 70%);
}

/* Menu bar — pronounced raised platinum bar with a bottom groove. */
.dd-menubar {
  position: relative;
  z-index: 2;
  display: flex;
  align-items: center;
  gap: 4px;
  margin: calc(env(safe-area-inset-top) + 8px) 8px 0;
  padding: 6px 10px;
  background: var(--dd-bar);
  border: 1px solid var(--dd-rim);
  border-radius: 18px;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.5), inset 0 -2px 4px rgba(0, 0, 0, 0.55), 0 3px 9px rgba(0, 0, 0, 0.55);
  font-size: 13px;
}
.dd-menu-item {
  padding: 3px 12px;
  border-radius: var(--dd-radius-sm);
  color: var(--dd-chrome-ink);
  cursor: default;
  white-space: nowrap;
}
.dd-menu-item:hover { background: var(--dd-select); color: var(--dd-select-ink); }
.dd-menu-spacer { flex: 1; }
.dd-menu-clock { padding: 3px 12px; color: var(--dd-chrome-dim); }
.dd-menu-conn { padding: 3px 8px; color: var(--dd-chrome-dim); font-size: 11px; letter-spacing: 0.06em; }

/* Window — thick glossy frame; content in a recessed well; grow box bottom-right. */
.dd-window {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  border-radius: var(--dd-radius);
  background: var(--dd-face);
  border: 1px solid var(--dd-rim);
  box-shadow: var(--dd-bevel), 0 18px 38px rgba(0, 0, 0, 0.6);
  overflow: hidden;
}
.dd-titlebar {
  position: relative;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 10px;
  background: var(--dd-texture), var(--dd-bar);
  border-bottom: 1px solid var(--dd-rim);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.5), inset 0 -2px 4px rgba(0, 0, 0, 0.6);
  font-size: 13px;
}
.dd-title {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  max-width: 68%;
  padding: 3px 18px;
  border-radius: var(--dd-radius-sm);
  background: var(--dd-bar);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.5), inset 0 -2px 3px rgba(0, 0, 0, 0.55);
  color: var(--dd-chrome-ink);
  letter-spacing: 0.04em;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.dd-winbtn {
  width: 17px;
  height: 16px;
  border-radius: 7px;
  background: var(--dd-face-hot);
  border: 1px solid var(--dd-rim);
  box-shadow: inset 0 2px 0 rgba(255, 255, 255, 0.34), inset 0 -2px 3px rgba(0, 0, 0, 0.6);
}
.dd-winbtn-zoom {
  box-shadow: inset 0 2px 0 rgba(255, 255, 255, 0.34), inset 0 -2px 3px rgba(0, 0, 0, 0.6),
    inset 0 0 0 4px var(--dd-face-hot), inset 0 0 0 5px rgba(0, 0, 0, 0.55);
}
.dd-winbtn-right { margin-left: auto; }
.dd-window-body {
  flex: 1;
  min-height: 0;
  display: flex;
  padding: 6px;
  box-shadow: var(--dd-groove);
}
.dd-content-well {
  flex: 1;
  min-height: 0;
  display: flex;
  border-radius: 12px;
  box-shadow: var(--dd-well);
  overflow: hidden;
}

/* Classic beveled scrollbar (decorative): up/down arrows + raised thumb on an inset track. */
.dd-scrollbar {
  width: 17px;
  display: flex;
  flex-direction: column;
  background: #14141c;
  border-left: 1px solid var(--dd-rim);
  box-shadow: inset 2px 0 4px rgba(0, 0, 0, 0.5);
}
.dd-sb-arrow {
  height: 17px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 8px;
  color: var(--dd-chrome-dim);
  background: var(--dd-face-hot);
  box-shadow: inset 0 1.5px 0 rgba(255, 255, 255, 0.28), inset 0 -1.5px 2px rgba(0, 0, 0, 0.55);
}
.dd-sb-track { flex: 1; position: relative; }
.dd-sb-thumb {
  position: absolute;
  left: 2px;
  right: 2px;
  top: 28%;
  height: 34%;
  border-radius: 3px;
  background: var(--dd-face-hot);
  box-shadow: inset 0 1.5px 0 rgba(255, 255, 255, 0.28), inset 0 -1.5px 2px rgba(0, 0, 0, 0.55), 0 0 0 1px var(--dd-rim);
}
/* Grow box — resize grip in the bottom-right corner. */
.dd-growbox {
  position: absolute;
  right: 4px;
  bottom: 4px;
  width: 16px;
  height: 16px;
  z-index: 3;
  border-radius: 5px;
  background:
    repeating-linear-gradient(135deg, rgba(255, 255, 255, 0.22) 0 1px, transparent 1px 3px, rgba(0, 0, 0, 0.55) 3px 4px, transparent 4px 6px),
    var(--dd-face-hot);
  box-shadow: inset 1px 1px 0 rgba(255, 255, 255, 0.2), inset -1px -1px 0 rgba(0, 0, 0, 0.6);
}

/* Beveled button. */
.dd-btn {
  font: inherit;
  font-size: 13px;
  padding: 7px 18px;
  border-radius: var(--dd-radius-sm);
  color: var(--dd-chrome-ink);
  background: var(--dd-face);
  border: 1px solid var(--dd-rim);
  box-shadow: var(--dd-bevel);
  cursor: pointer;
}
.dd-btn:active { box-shadow: var(--dd-bevel-pressed); }
.dd-btn-primary {
  color: var(--dd-select-ink);
  background: linear-gradient(180deg, #4168ec 0%, #2a52d6 30%, #1f40b0 100%);
}

/* Status / notification bubble. */
.dd-bubble {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 18px;
  border-radius: 18px;
  background: var(--dd-face);
  border: 1px solid var(--dd-rim);
  box-shadow: var(--dd-bevel);
  color: var(--dd-chrome-dim);
  font-size: 12px;
}

/* --- forms (unlock) --- */
.dd-form {
  flex: 1;
  min-height: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 14px;
  padding: 24px;
  text-align: center;
  color: var(--dd-chrome-ink);
}
.dd-form-title { font-size: 20px; letter-spacing: 0.12em; }
.dd-form-sub { font-size: 13px; color: var(--dd-chrome-dim); }
.dd-form-note { max-width: 30ch; font-size: 11px; line-height: 1.5; color: var(--dd-chrome-dim); margin-top: 6px; }
.dd-form-error { font-size: 12px; color: #ff8f8f; }
.dd-field { display: flex; gap: 8px; align-items: center; }
.dd-input {
  font: inherit;
  font-size: 14px;
  padding: 7px 12px;
  width: 12rem;
  max-width: 60vw;
  border-radius: var(--dd-radius-sm);
  border: 1px solid var(--dd-rim);
  background: #11111a;
  box-shadow: var(--dd-well);
  color: var(--dd-chrome-ink);
}
.dd-input:focus { outline: 2px solid var(--dd-select); outline-offset: 1px; }
/* The readonly contact string: wraps the long copy-pasteable token legibly. */
.dd-contact {
  width: 22rem;
  max-width: 72vw;
  resize: none;
  font-size: 11px;
  line-height: 1.45;
  letter-spacing: 0.01em;
  word-break: break-all;
}
.dd-fp-label { font-size: 11px; letter-spacing: 0.12em; color: var(--dd-chrome-dim); text-transform: uppercase; }
.dd-fingerprint {
  font-size: 20px;
  letter-spacing: 0.08em;
  padding: 10px 18px;
  border-radius: var(--dd-radius-sm);
  background: #11111a;
  box-shadow: var(--dd-well);
  color: var(--dd-chrome-ink);
}

/* --- channel list --- */
.dd-list {
  flex: 1;
  min-height: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 10px;
  overflow-y: auto;
}
.dd-channel {
  display: block;
  width: 100%;
  text-align: left;
  font: inherit;
  padding: 9px 12px;
  border-radius: var(--dd-radius-sm);
  color: var(--dd-chrome-ink);
  background: var(--dd-face);
  border: 1px solid var(--dd-rim);
  box-shadow: var(--dd-bevel);
  cursor: pointer;
}
.dd-channel:active { box-shadow: var(--dd-bevel-pressed); }
.dd-channel-top { display: flex; align-items: center; gap: 8px; font-size: 15px; }
.dd-channel-name { flex: 1; }
.dd-channel-preview { font-size: 12px; color: var(--dd-chrome-dim); margin-top: 3px; }
.dd-channel-meta { font-size: 10px; color: var(--dd-chrome-dim); margin-top: 4px; letter-spacing: 0.05em; }
.dd-status-dot { width: 9px; height: 9px; border-radius: 50%; box-shadow: 0 0 6px currentColor; }
.dd-status-secure { background: #74f0a8; color: #74f0a8; }
.dd-status-pending { background: var(--dd-warn, #ffce5e); color: #ffce5e; }
.dd-status-blocked { background: #ff8f8f; color: #ff8f8f; }
.dd-badge {
  min-width: 18px;
  padding: 1px 6px;
  border-radius: 9px;
  font-size: 11px;
  text-align: center;
  color: var(--dd-select-ink);
  background: var(--dd-select);
}

@media (prefers-reduced-motion: reduce) {
  .dd-desk::after { transform: none; opacity: 0.5; }
}