@import url('https://fonts.googleapis.com/css2?family=VT323&family=Share+Tech+Mono&display=swap');

/* ══════════════════════════════════════════════
   TOKENS
══════════════════════════════════════════════ */
:root {
  --ph:      #00ff41;    /* phosphor green */
  --ph-dim:  #00aa2b;
  --ph-faint:#003310;
  --ph-glow: rgba(0,255,65,0.25);
  --amber:   #ffb000;
  --red:     #ff3333;
  --screen:  #000d00;
  --bezel:   #141414;
  --panel:   #1a1a1a;
  --border:  #2a2a2a;
  --scan-line: rgba(0,0,0,0.12);
  --font-display: 'VT323', monospace;
  --font-mono:    'Share Tech Mono', monospace;
}

/* ══════════════════════════════════════════════
   RESET & BASE
══════════════════════════════════════════════ */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  background: #0e0e0e;
  background-image:
    radial-gradient(ellipse at 50% 0%, #1a2a1a 0%, transparent 60%);
  color: var(--ph);
  font-family: var(--font-mono);
  font-size: 14px;
  line-height: 1.5;
  min-height: 100vh;
}

/* Global CRT scanlines */
body::after {
  content: '';
  position: fixed;
  inset: 0;
  background: repeating-linear-gradient(
    0deg, var(--scan-line) 0px, var(--scan-line) 1px,
    transparent 1px, transparent 3px
  );
  pointer-events: none;
  z-index: 9999;
}

a { color: var(--ph-dim); text-decoration: none; }
a:hover { color: var(--ph); text-shadow: 0 0 8px var(--ph-glow); }

/* ══════════════════════════════════════════════
   GLOW UTILITY
══════════════════════════════════════════════ */
.glow  { text-shadow: 0 0 6px var(--ph), 0 0 12px var(--ph-glow); }
.blink { animation: blink 1.1s step-end infinite; }
@keyframes blink { 50% { opacity: 0; } }

/* ══════════════════════════════════════════════
   HEADER / DEVICE NAMEPLATE
══════════════════════════════════════════════ */
header {
  background: var(--bezel);
  border-bottom: 2px solid #000;
  box-shadow: 0 2px 0 #333, 0 4px 20px rgba(0,0,0,0.6);
  padding: 0 20px;
  position: sticky;
  top: 0;
  z-index: 200;
}
.header-inner {
  max-width: 900px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 20px;
  height: 60px;
}
.device-name {
  font-family: var(--font-display);
  font-size: 28px;
  letter-spacing: 4px;
  color: var(--ph);
  text-shadow: 0 0 8px var(--ph), 0 0 20px var(--ph-glow);
  flex: 1;
}
.device-name span { color: var(--ph-dim); font-size: 18px; margin-left: 8px; }
.header-meta {
  display: flex;
  align-items: center;
  gap: 20px;
  font-size: 12px;
  color: var(--ph-dim);
}
#clockDisplay {
  font-family: var(--font-display);
  font-size: 22px;
  letter-spacing: 2px;
  color: var(--amber);
  text-shadow: 0 0 8px rgba(255,176,0,0.5);
}
.header-link {
  color: var(--ph-dim);
  font-size: 12px;
  letter-spacing: 1px;
  padding: 4px 10px;
  border: 1px solid #333;
  transition: all 0.15s;
}
.header-link:hover { border-color: var(--ph-dim); color: var(--ph); }

.lang-toggle { display: flex; gap: 4px; }
.lang-btn {
  background: none;
  border: 1px solid #333;
  color: var(--ph-dim);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 1px;
  padding: 3px 8px;
  cursor: pointer;
  transition: all 0.15s;
}
.lang-btn:hover { border-color: var(--ph-dim); color: var(--ph); }
.lang-btn.active {
  border-color: var(--ph);
  color: var(--ph);
  box-shadow: 0 0 6px var(--ph-glow);
}

/* ══════════════════════════════════════════════
   MAIN LAYOUT
══════════════════════════════════════════════ */
main {
  max-width: 900px;
  margin: 0 auto;
  padding: 20px 16px 60px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

/* ══════════════════════════════════════════════
   PANEL (card)
══════════════════════════════════════════════ */
.panel {
  background: var(--panel);
  border: 1px solid #2a2a2a;
  border-top: 1px solid #3a3a3a;
  border-bottom: 2px solid #000;
  position: relative;
}
.panel-label {
  font-family: var(--font-display);
  font-size: 13px;
  letter-spacing: 3px;
  color: #555;
  padding: 6px 14px 0;
  border-bottom: 1px solid #222;
  margin-bottom: 14px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.panel-label::after {
  content: '';
  flex: 1;
  height: 1px;
  background: #222;
}

/* ══════════════════════════════════════════════
   CONTROLS PANEL
══════════════════════════════════════════════ */
.controls-panel { padding: 0 0 16px; }

.controls-grid {
  padding: 0 14px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.controls-row {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

/* ── Section label ── */
.ctrl-label {
  font-size: 11px;
  letter-spacing: 2px;
  color: #444;
  margin-bottom: 6px;
  text-transform: uppercase;
}

/* ── Toggle buttons (mode / source) ── */
.toggle-group { display: flex; gap: 6px; }
.toggle-btn {
  font-family: var(--font-display);
  font-size: 18px;
  letter-spacing: 2px;
  padding: 8px 18px;
  background: #111;
  border: 1px solid #2a2a2a;
  border-bottom: 2px solid #000;
  color: #444;
  cursor: pointer;
  transition: all 0.1s;
  white-space: nowrap;
}
.toggle-btn:hover { border-color: #444; color: #777; }
.toggle-btn.active {
  background: rgba(0,255,65,0.07);
  border-color: var(--ph-dim);
  color: var(--ph);
  text-shadow: 0 0 6px var(--ph-glow);
}
.toggle-btn:active { transform: translateY(1px); }

/* ── Language selects ── */
.lang-row {
  display: flex;
  align-items: flex-end;
  gap: 10px;
  flex: 1;
  flex-wrap: wrap;
}
.lang-group { display: flex; flex-direction: column; flex: 1; min-width: 140px; }
.lang-arrow {
  font-family: var(--font-display);
  font-size: 22px;
  color: var(--ph-faint);
  padding-bottom: 4px;
  flex-shrink: 0;
}
select {
  width: 100%;
  padding: 8px 10px;
  background: #0a0a0a;
  border: 1px solid #2a2a2a;
  border-bottom: 2px solid #000;
  color: var(--ph-dim);
  font-family: var(--font-mono);
  font-size: 13px;
  outline: none;
  appearance: none;
  cursor: pointer;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='10' viewBox='0 0 10 10'%3E%3Cpath fill='%23005522' d='M5 7L0 2h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 10px center;
  padding-right: 28px;
}
select:focus { border-color: var(--ph-faint); color: var(--ph); }
select option { background: #0a0a0a; }

/* ── Auto info bar ── */
.auto-info-bar {
  display: none;
  align-items: center;
  gap: 12px;
  padding: 8px 14px;
  background: rgba(0,255,65,0.04);
  border: 1px solid #1a3a1a;
  font-size: 12px;
  color: var(--ph-dim);
  letter-spacing: 1px;
}
.auto-info-bar.visible { display: flex; }
#autoCountdown {
  font-family: var(--font-display);
  font-size: 20px;
  color: var(--amber);
  min-width: 28px;
}
#detectedLangDisplay {
  font-family: var(--font-display);
  font-size: 18px;
  color: var(--ph);
  margin-left: auto;
  letter-spacing: 2px;
}

/* ── TX Button ── */
.tx-btn {
  font-family: var(--font-display);
  font-size: 24px;
  letter-spacing: 4px;
  width: 100%;
  padding: 14px;
  background: #0d1a0d;
  border: 1px solid var(--ph-faint);
  border-bottom: 3px solid #000;
  color: var(--ph);
  cursor: pointer;
  text-shadow: 0 0 8px var(--ph-glow);
  transition: all 0.1s;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
}
.tx-btn:hover {
  background: rgba(0,255,65,0.1);
  border-color: var(--ph);
  box-shadow: 0 0 20px var(--ph-glow);
}
.tx-btn.active {
  background: rgba(255,51,51,0.08);
  border-color: #993322;
  color: var(--red);
  text-shadow: 0 0 8px rgba(255,51,51,0.4);
}
.tx-btn:active { transform: translateY(2px); border-bottom-width: 1px; }

/* ══════════════════════════════════════════════
   STATUS BAR
══════════════════════════════════════════════ */
.status-bar {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 8px 14px;
  background: #0a0a0a;
  border: 1px solid #1f1f1f;
  border-top-color: #2a2a2a;
  font-size: 12px;
}
.status-code {
  font-family: var(--font-display);
  font-size: 18px;
  color: var(--amber);
  min-width: 50px;
  letter-spacing: 1px;
}
.status-msg {
  flex: 1;
  color: var(--ph-dim);
  letter-spacing: 1px;
  font-size: 12px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* ── VU Meter ── */
.vu-wrap {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}
.vu-label { font-size: 11px; color: #333; letter-spacing: 1px; }
.vu-meter { display: flex; gap: 2px; align-items: center; }
.vu-seg {
  width: 7px; height: 14px;
  background: #0a1a0a;
  border: 1px solid #111;
  transition: background 0.06s, box-shadow 0.06s;
}
.vu-seg.on   { background: var(--ph);   box-shadow: 0 0 4px var(--ph-glow); }
.vu-seg.warn { background: var(--amber); box-shadow: 0 0 4px rgba(255,176,0,0.4); }
.vu-seg.peak { background: var(--red);   box-shadow: 0 0 4px rgba(255,51,51,0.4); }

/* ── Morse info ── */
.morse-info {
  display: none;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
#wpmDisplay {
  font-family: var(--font-display);
  font-size: 18px;
  color: var(--amber);
  min-width: 70px;
  letter-spacing: 1px;
}
.morse-raw-label { font-size: 11px; color: #333; }
#morseRaw {
  font-family: var(--font-display);
  font-size: 20px;
  color: var(--amber);
  letter-spacing: 3px;
  min-width: 80px;
}

/* ══════════════════════════════════════════════
   SCREEN AREAS (subtitle / translation)
══════════════════════════════════════════════ */
.screen-panel { padding: 0 0 0; }

.screen-header {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 6px 14px;
  border-bottom: 1px solid #1a1a1a;
  margin-bottom: 0;
}
.screen-title {
  font-family: var(--font-display);
  font-size: 14px;
  letter-spacing: 3px;
  color: #444;
  flex: 1;
}
.api-indicator {
  font-size: 11px;
  color: #333;
  letter-spacing: 1px;
}
.copy-btn {
  font-family: var(--font-mono);
  font-size: 11px;
  padding: 3px 10px;
  background: #0a0a0a;
  border: 1px solid #2a2a2a;
  color: #444;
  cursor: pointer;
  letter-spacing: 1px;
  transition: all 0.15s;
}
.copy-btn:hover { border-color: var(--ph-faint); color: var(--ph-dim); }

/* CRT screen */
.crt-screen {
  min-height: 90px;
  max-height: 180px;
  overflow-y: auto;
  background: var(--screen);
  padding: 14px 16px;
  position: relative;
  font-size: 20px;
  font-family: var(--font-display);
  line-height: 1.5;
  letter-spacing: 1px;
}
/* inner scanlines for the screen area */
.crt-screen::before {
  content: '';
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(
    0deg, rgba(0,0,0,0.1) 0, rgba(0,0,0,0.1) 1px,
    transparent 1px, transparent 4px
  );
  pointer-events: none;
  z-index: 1;
}
.crt-screen > * { position: relative; z-index: 2; }

.crt-screen span         { color: var(--ph); text-shadow: 0 0 4px var(--ph-glow); }
.crt-screen span.interim { color: var(--ph-dim); }
.cursor {
  display: inline-block;
  color: var(--ph);
  animation: blink 0.9s step-end infinite;
  margin-left: 2px;
}
.ph-text {
  color: #1a3a1a;
  font-size: 15px;
  letter-spacing: 2px;
}

/* Translation screen */
.translation-screen .crt-screen span { color: var(--amber); text-shadow: 0 0 4px rgba(255,176,0,0.3); }

/* ══════════════════════════════════════════════
   HISTORY
══════════════════════════════════════════════ */
.history-panel { padding: 0; }
.history-header {
  display: flex;
  align-items: center;
  padding: 6px 14px;
  border-bottom: 1px solid #1a1a1a;
}
.history-title {
  font-family: var(--font-display);
  font-size: 14px;
  letter-spacing: 3px;
  color: #444;
  flex: 1;
}
.clear-btn {
  font-family: var(--font-mono);
  font-size: 11px;
  padding: 3px 10px;
  background: #0a0a0a;
  border: 1px solid #2a2a2a;
  color: #444;
  cursor: pointer;
  letter-spacing: 1px;
  transition: all 0.15s;
}
.clear-btn:hover { border-color: #552200; color: #884444; }

.history-box {
  max-height: 200px;
  overflow-y: auto;
  padding: 10px 14px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  background: #0a0a0a;
}
.ph { color: #1e3a1e; font-size: 13px; letter-spacing: 2px; }

.history-item {
  border-left: 2px solid #1a3a1a;
  padding: 6px 10px;
  background: #0d0d0d;
}
.hi-time  { font-size: 11px; color: #3a3a3a; letter-spacing: 1px; margin-bottom: 2px; }
.hi-orig  { color: var(--ph-dim); font-size: 14px; font-family: var(--font-display); letter-spacing: 1px; }
.hi-trans { color: #886600; font-size: 14px; font-family: var(--font-display); letter-spacing: 1px; }

/* ══════════════════════════════════════════════
   GUIDE PANEL
══════════════════════════════════════════════ */
.guide-panel { padding: 0 0 16px; }

.guide-tabs {
  display: flex;
  gap: 0;
  border-bottom: 1px solid #1a1a1a;
  margin-bottom: 14px;
}
.guide-tab {
  font-family: var(--font-mono);
  font-size: 12px;
  padding: 7px 16px;
  background: transparent;
  border: none;
  border-right: 1px solid #1a1a1a;
  color: #333;
  cursor: pointer;
  letter-spacing: 1px;
  transition: all 0.15s;
}
.guide-tab:hover { color: var(--ph-dim); }
.guide-tab.active {
  background: rgba(0,255,65,0.05);
  color: var(--ph-dim);
  border-bottom: 2px solid var(--ph-faint);
}

.guide-tab-content { padding: 0 14px; }
#guideContent { padding: 0; }
.guide-tab-content h3 {
  font-family: var(--font-display);
  font-size: 18px;
  letter-spacing: 3px;
  color: var(--ph-dim);
  margin-bottom: 10px;
}
.guide-tab-content ol {
  padding-left: 20px;
  display: flex;
  flex-direction: column;
  gap: 5px;
  margin-bottom: 12px;
}
.guide-tab-content li { font-size: 13px; color: #666; }
.guide-tab-content strong { color: var(--ph-dim); }
.tip {
  font-size: 12px;
  color: #444;
  border-left: 2px solid var(--ph-faint);
  padding: 6px 10px;
  margin-bottom: 6px;
  letter-spacing: 0.5px;
}

/* ══════════════════════════════════════════════
   FOOTER
══════════════════════════════════════════════ */
footer {
  text-align: center;
  padding: 20px 16px;
  font-size: 12px;
  color: #2a2a2a;
  letter-spacing: 2px;
  border-top: 1px solid #1a1a1a;
}
footer a { color: #333; }
footer a:hover { color: var(--ph-dim); }

/* ══════════════════════════════════════════════
   SCROLLBAR
══════════════════════════════════════════════ */
::-webkit-scrollbar { width: 4px; }
::-webkit-scrollbar-track { background: #0a0a0a; }
::-webkit-scrollbar-thumb { background: #1a3a1a; border-radius: 2px; }
::-webkit-scrollbar-thumb:hover { background: var(--ph-faint); }

/* ══════════════════════════════════════════════
   RESPONSIVE
══════════════════════════════════════════════ */
@media (max-width: 600px) {
  .device-name { font-size: 22px; letter-spacing: 2px; }
  #clockDisplay { font-size: 18px; }
  .lang-row { flex-direction: column; }
  .lang-arrow { display: none; }
  .crt-screen { font-size: 16px; }
  .vu-meter .vu-seg:nth-child(n+13) { display: none; }
  .header-meta > :not(#clockDisplay) { display: none; }
}