/*
 * SeedCart — The Cipher Seed
 * Cyber-minimalist CRT terminal. Monospace, green-on-black. Zero external deps.
 */

:root {
  --black: #0B0C10;
  --panel: #11141a;
  --silver: #C5C6C7;
  --phosphor: #45A29E;
  --accent: #66FCF1;
  --danger: #ff5c5c;
  --grid-line: rgba(69, 162, 158, 0.18);
  --mono: "JetBrains Mono", "Roboto Mono", "Fira Code", ui-monospace,
    SFMono-Regular, Menlo, Consolas, monospace;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  height: 100%;
  background: var(--black);
  color: var(--phosphor);
  font-family: var(--mono);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

body {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: clamp(8px, 3vw, 32px);
  overflow-x: hidden;
}

/* Subtle CRT scanline overlay */
#scanlines {
  position: fixed;
  inset: 0;
  pointer-events: none;
  background: repeating-linear-gradient(
    to bottom,
    rgba(0, 0, 0, 0) 0px,
    rgba(0, 0, 0, 0) 2px,
    rgba(0, 0, 0, 0.25) 3px
  );
  mix-blend-mode: multiply;
  z-index: 50;
}

.terminal {
  width: min(720px, 100%);
  min-height: min(80vh, 760px);
  background: linear-gradient(180deg, var(--panel), var(--black));
  border: 1px solid var(--grid-line);
  border-radius: 10px;
  box-shadow: 0 0 0 1px rgba(0, 0, 0, 0.6), 0 0 40px rgba(69, 162, 158, 0.08);
  padding: clamp(16px, 4vw, 32px);
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.crt-header, .crt-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--silver);
}

.crt-footer { margin-top: auto; opacity: 0.55; text-transform: uppercase; }

.brand {
  font-size: 18px;
  font-weight: 700;
  letter-spacing: 0.22em;
  color: var(--accent);
}

.cursor { animation: blink 1.1s steps(1) infinite; }
@keyframes blink { 50% { opacity: 0; } }

.meta { display: flex; gap: 14px; align-items: center; }
.link.offline { color: var(--silver); }
.link.online { color: var(--accent); }

/* Screens */
.screen { display: none; flex-direction: column; gap: 18px; flex: 1; }
.screen.active { display: flex; animation: fade 0.35s ease; }
@keyframes fade { from { opacity: 0; transform: translateY(6px); } }

.boot-log {
  font-size: 13px;
  line-height: 1.6;
  white-space: pre-wrap;
  word-break: break-word;
  margin: 0;
  color: var(--phosphor);
}

.title {
  font-size: clamp(28px, 7vw, 52px);
  letter-spacing: 0.18em;
  margin: 12px 0 0;
  color: var(--accent);
  text-shadow: 0 0 18px rgba(102, 252, 241, 0.35);
}
.subtitle { color: var(--silver); margin: 0; max-width: 46ch; }
.success-head { color: var(--accent); letter-spacing: 0.2em; }

.metrics {
  display: flex;
  flex-wrap: wrap;
  gap: 14px 28px;
  margin: 8px 0;
}
.metrics div { display: flex; flex-direction: column; }
.metrics dt { font-size: 10px; letter-spacing: 0.2em; color: var(--silver); }
.metrics dd { margin: 2px 0 0; font-size: 16px; color: var(--accent); }

.btn {
  align-self: flex-start;
  background: transparent;
  color: var(--accent);
  border: 1px solid var(--phosphor);
  padding: 12px 22px;
  font-family: var(--mono);
  font-size: 14px;
  letter-spacing: 0.16em;
  cursor: pointer;
  border-radius: 4px;
  transition: background 0.15s, color 0.15s, box-shadow 0.15s;
}
.btn:hover, .btn:focus-visible {
  background: var(--phosphor);
  color: var(--black);
  box-shadow: 0 0 18px rgba(69, 162, 158, 0.4);
  outline: none;
}

.progress { display: flex; gap: 10px; flex-wrap: wrap; font-size: 11px; }
.progress .step {
  padding: 4px 10px;
  border: 1px solid var(--grid-line);
  border-radius: 3px;
  color: var(--silver);
  letter-spacing: 0.12em;
}
.progress .step.done { color: var(--black); background: var(--phosphor); }
.progress .step.current { color: var(--accent); border-color: var(--accent); }

.puzzle-host { flex: 1; display: flex; flex-direction: column; gap: 16px; }
.puzzle-prompt { color: var(--silver); font-size: 14px; line-height: 1.6; margin: 0; }
.puzzle-prompt strong { color: var(--accent); }

/* Math grid */
.grid {
  display: grid;
  gap: 6px;
  margin: 4px 0;
}
.grid .cell {
  border: 1px solid var(--grid-line);
  padding: 14px 6px;
  text-align: center;
  font-size: 18px;
  color: var(--phosphor);
  border-radius: 3px;
}
.grid .cell.target { border-color: var(--accent); color: var(--accent); }

/* Generic option buttons / inputs */
.options { display: flex; flex-wrap: wrap; gap: 10px; }
.opt {
  background: transparent;
  border: 1px solid var(--phosphor);
  color: var(--phosphor);
  padding: 12px 18px;
  font-family: var(--mono);
  font-size: 16px;
  border-radius: 4px;
  cursor: pointer;
  min-width: 56px;
  transition: background 0.12s, color 0.12s;
}
.opt:hover { background: var(--phosphor); color: var(--black); }

.morse-stream {
  font-size: 30px;
  letter-spacing: 0.3em;
  color: var(--accent);
  padding: 12px 0;
}
.input-row { display: flex; gap: 10px; flex-wrap: wrap; }
.text-input {
  background: var(--black);
  border: 1px solid var(--phosphor);
  color: var(--accent);
  font-family: var(--mono);
  font-size: 16px;
  padding: 12px 14px;
  border-radius: 4px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  flex: 1;
  min-width: 140px;
}
.text-input:focus { outline: none; box-shadow: 0 0 12px rgba(102, 252, 241, 0.4); }

/* Pattern puzzle */
.pattern-row { display: flex; gap: 12px; align-items: center; flex-wrap: wrap; }
.glyph {
  width: 46px;
  height: 46px;
  border: 1px solid var(--phosphor);
  border-radius: 4px;
  display: grid;
  place-items: center;
}
.glyph svg { width: 30px; height: 30px; }
.glyph.q { border-style: dashed; border-color: var(--accent); }

.feedback { min-height: 20px; font-size: 13px; letter-spacing: 0.08em; }
.feedback.ok { color: var(--accent); }
.feedback.bad { color: var(--danger); }

.token-label { font-size: 10px; letter-spacing: 0.2em; color: var(--silver); margin: 8px 0 0; }
.token {
  display: block;
  font-size: 15px;
  color: var(--accent);
  word-break: break-all;
  padding: 14px;
  border: 1px dashed var(--accent);
  border-radius: 4px;
  background: rgba(102, 252, 241, 0.05);
}

@media (max-width: 480px) {
  .terminal { min-height: 90vh; border-radius: 6px; }
  .title { letter-spacing: 0.1em; }
}