@font-face {
  font-family: 'DSEG';
  src: local('Courier New');
}

:root {
  --bg: #0b0d10;
  --bg2: #111418;
  --fg: #e8f1f2;
  --accent: #22d3ee;
  --accent-dim: #164a56;
  --accent-ink: #04141a;
  --track: #1c2126;
  --muted: #4a5660;
  --danger: #ff5d5d;
  --font-mono: 'Courier New', 'DSEG7', monospace;
}

/* ---------- color themes ---------- */
body[data-color="mono"] {
  --accent: #e8f1f2;
  --accent-dim: #3a4148;
  --accent-ink: #0b0d10;
}
body[data-color="red"] {
  --accent: #ff4d4d;
  --accent-dim: #5a1a1a;
  --accent-ink: #1a0505;
}
body[data-color="light"] {
  --bg: #f4f2ec;
  --bg2: #ffffff;
  --fg: #16181a;
  --accent: #16181a;
  --accent-dim: #c9c6bd;
  --accent-ink: #f4f2ec;
  --track: #e1ded4;
  --muted: #8b877c;
}

* { box-sizing: border-box; -webkit-tap-highlight-color: transparent; user-select: none; }

html, body {
  height: 100%;
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: -apple-system, Segoe UI, Roboto, sans-serif;
  overflow: hidden;
  transition: background .2s, color .2s;
}

#app {
  --ring-size: min(90vw, 60vh, 620px);
  position: relative;
  height: 100vh;
  height: 100dvh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: space-between;
  padding: env(safe-area-inset-top) env(safe-area-inset-right) env(safe-area-inset-bottom) env(safe-area-inset-left);
}

/* ---------- topbar ---------- */
#topbar {
  width: 100%;
  display: flex;
  justify-content: flex-end;
  gap: 8px;
  padding: 12px 16px;
}

.iconbtn {
  background: var(--bg2);
  border: 1px solid var(--track);
  color: var(--muted);
  font: 600 11px/1 'Courier New', monospace;
  letter-spacing: 0.08em;
  padding: 8px 12px;
  border-radius: 999px;
  cursor: pointer;
  transition: color .15s, border-color .15s;
}
.iconbtn:active { transform: scale(0.95); }
.iconbtn:hover { color: var(--accent); border-color: var(--accent-dim); }
.iconbtn.active { color: var(--accent); border-color: var(--accent-dim); }

/* ---------- clock stage ---------- */
#clockStage {
  position: relative;
  flex: 1;
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 0;
}

/* the circular seconds sweep is an LCD-only affordance; the split-flap and
   minimal faces are meant to stand on their own without it */
body:not([data-style="lcd"]) #ring {
  display: none;
}

#ring {
  position: absolute;
  width: var(--ring-size);
  height: var(--ring-size);
  transform: rotate(-90deg);
}
#ringTrack {
  fill: none;
  stroke: var(--track);
  stroke-width: 3;
}
#ringProgress {
  fill: none;
  stroke: var(--accent);
  stroke-width: 3;
  stroke-linecap: round;
  stroke-dasharray: 879.6;
  stroke-dashoffset: 879.6;
  transition: stroke-dashoffset 0.15s linear;
  filter: drop-shadow(0 0 6px var(--accent));
}
.tick {
  stroke: var(--muted);
  stroke-width: 1.5;
  opacity: 0.5;
  transition: stroke 0.2s, opacity 0.2s, stroke-width 0.2s;
}
.tick.major {
  stroke: var(--fg);
  opacity: 0.7;
  stroke-width: 2.5;
}
.tick.lit {
  stroke: var(--accent);
  opacity: 0.9;
}
.tick.lit.major {
  stroke: var(--accent);
  opacity: 1;
}
.tick.current {
  stroke: var(--accent);
  opacity: 1;
  stroke-width: 3;
  filter: drop-shadow(0 0 4px var(--accent));
}

/* ---------- center logo (tone-on-tone, per host) ---------- */
#centerLogo {
  position: absolute;
  z-index: 0;
  /* centered a bit below the upper-third point of the ring */
  top: calc(50% - var(--ring-size) * 0.22);
  left: 50%;
  transform: translate(-50%, -50%);
  width: calc(var(--ring-size) * 0.17);
  height: calc(var(--ring-size) * 0.17);
  display: none;
  align-items: center;
  justify-content: center;
  pointer-events: none;
  opacity: 0.32;
  transition: opacity 0.2s, filter 0.2s, top 0.2s;
}
body[data-logo="g"] #centerLogo,
body[data-logo="seven8"] #centerLogo {
  display: flex;
}

#logoG, #logoSeven8 { display: none; }
#logoG { width: 100%; height: 100%; }

body[data-logo="g"] #logoG {
  display: block;
  background-color: var(--accent);
  filter: drop-shadow(0 0 16px var(--accent));
  -webkit-mask: url('logo-g.png') center / contain no-repeat;
  mask: url('logo-g.png') center / contain no-repeat;
}

/* explicit tile + gap sizes (not percentages) so cells come out perfectly square,
   independent of the container's own width/height ratio */
body[data-logo="seven8"] #logoSeven8 {
  display: grid;
  grid-template-columns: repeat(4, calc(var(--ring-size) * 0.032));
  grid-template-rows: repeat(2, calc(var(--ring-size) * 0.032));
  gap: calc(var(--ring-size) * 0.01);
  filter: drop-shadow(0 0 5px var(--accent));
}
#logoSeven8 span {
  background: var(--accent);
  border-radius: 18%;
}
#logoSeven8 span:nth-child(1) { opacity: 0.18; }
#logoSeven8 span:nth-child(2) { opacity: 1; }
#logoSeven8 span:nth-child(3) { opacity: 1; }
#logoSeven8 span:nth-child(4) { opacity: 1; }
#logoSeven8 span:nth-child(5) { opacity: 1; }
#logoSeven8 span:nth-child(6) { opacity: 0.18; }
#logoSeven8 span:nth-child(7) { opacity: 0.18; }
#logoSeven8 span:nth-child(8) { opacity: 0.18; }

#clockFace {
  position: absolute;
  z-index: 1;
  /* always centered exactly in the middle of the ring */
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
}

#timeDisplay {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(1.4rem, calc(var(--ring-size) * 0.155), 6rem);
  line-height: 1;
  display: flex;
  align-items: baseline;
  letter-spacing: 0.02em;
  color: var(--fg);
}
.colon { opacity: 0.5; margin: 0 0.05em; }
.ampm {
  font-size: 0.28em;
  margin-left: 0.35em;
  color: var(--accent);
  font-weight: 700;
  letter-spacing: 0.05em;
}

#dateDisplay {
  font-size: clamp(0.75rem, 2vw, 1rem);
  color: var(--muted);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
#zoneLabel {
  font-size: clamp(0.7rem, 1.8vw, 0.9rem);
  color: var(--accent);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  min-height: 1.2em;
}

/* ---------- LCD theme ---------- */
body[data-style="lcd"] #timeDisplay {
  color: var(--accent);
  text-shadow: 0 0 10px var(--accent-dim), 0 0 24px color-mix(in srgb, var(--accent) 25%, transparent);
}
body[data-style="lcd"] .digits {
  background: color-mix(in srgb, var(--accent) 6%, transparent);
}

/* ---------- Split-flap theme ---------- */
body[data-style="flap"] #timeDisplay { gap: 4px; }
body[data-style="flap"] .digits {
  display: inline-flex;
  background: #1a1d21;
  border-radius: 6px;
  padding: 0.05em 0.12em;
  margin: 0 0.03em;
  box-shadow: inset 0 -2px 0 rgba(0,0,0,0.5), 0 2px 4px rgba(0,0,0,0.4);
  position: relative;
  color: #f4f4f2;
}
body[data-style="flap"] .digits::after {
  content: "";
  position: absolute;
  left: 0; right: 0; top: 50%;
  height: 1px;
  background: rgba(0,0,0,0.6);
}
body[data-style="flap"] .colon { color: var(--muted); }
body[data-style="flap"] .ampm { color: var(--fg); }

.digits.flip {
  animation: flapflip 0.15s ease-out;
}
@keyframes flapflip {
  0% { transform: perspective(200px) rotateX(0deg); }
  50% { transform: perspective(200px) rotateX(-40deg); opacity: 0.7;}
  100% { transform: perspective(200px) rotateX(0deg); }
}

/* ---------- Minimal theme ---------- */
body[data-style="minimal"] #timeDisplay {
  font-family: -apple-system, Segoe UI, Roboto, sans-serif;
  font-weight: 200;
  color: var(--fg);
}
body[data-style="minimal"] .ampm { color: var(--muted); }

/* ---------- timezone filmstrip ---------- */
body[data-tz="hidden"] #tzFilmstrip {
  display: none;
}

#tzFilmstrip {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
  padding: 6px 10px;
}

#tzTrack {
  display: flex;
  align-items: center;
  gap: 10px;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  scroll-behavior: smooth;
  padding: 6px 45vw;
  max-width: 100%;
  scrollbar-width: none;
}
#tzTrack::-webkit-scrollbar { display: none; }

.tzItem {
  scroll-snap-align: center;
  flex: 0 0 auto;
  min-width: 120px;
  text-align: center;
  padding: 8px 14px;
  border-radius: 12px;
  opacity: 0.35;
  transform: scale(0.85);
  transition: opacity 0.2s, transform 0.2s;
  cursor: pointer;
  font-family: var(--font-mono);
}
.tzItem.active {
  opacity: 1;
  transform: scale(1);
  background: var(--bg2);
  border: 1px solid var(--accent-dim);
}
.tzItem .tzTime { font-size: 1rem; font-weight: 700; color: var(--fg); }
.tzItem.active .tzTime { color: var(--accent); }
.tzItem .tzName { font-size: 0.62rem; color: var(--muted); letter-spacing: 0.06em; text-transform: uppercase; margin-top: 2px; }

.tzArrow {
  background: none;
  border: none;
  color: var(--muted);
  font-size: 1rem;
  cursor: pointer;
  padding: 6px;
  flex: 0 0 auto;
}
.tzArrow:hover { color: var(--accent); }

/* ---------- stopwatch timer (centered on the lower-third point of the ring) ---------- */
#swDisplay {
  position: absolute;
  z-index: 1;
  top: calc(50% + var(--ring-size) * 0.333);
  left: 50%;
  transform: translate(-50%, -50%);
  font-family: var(--font-mono);
  font-size: clamp(0.8rem, calc(var(--ring-size) * 0.045), 1.4rem);
  color: var(--fg);
  letter-spacing: 0.02em;
  white-space: nowrap;
  padding: calc(var(--ring-size) * 0.012) calc(var(--ring-size) * 0.03);
  border-radius: 999px;
  background: color-mix(in srgb, var(--bg2) 70%, transparent);
  border: 1px solid var(--track);
}

/* ---------- stopwatch buttons (row above the timezone filmstrip) ---------- */
#stopwatchBar {
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 8px 16px;
}

#swButtons {
  display: flex;
  gap: 14px;
}

.swbtn {
  border: none;
  border-radius: 999px;
  padding: 10px 26px;
  font: 700 0.85rem/1 -apple-system, Segoe UI, sans-serif;
  letter-spacing: 0.04em;
  cursor: pointer;
  transition: filter .15s, transform .1s, background .2s, color .2s;
}
.swbtn:active { transform: scale(0.94); }
.swbtn.start { background: var(--accent); color: var(--accent-ink); }
.swbtn.start.running { background: #ffb648; color: #1a1200; }
.swbtn.reset { background: var(--track); color: var(--muted); }
.swbtn.reset:hover { color: var(--danger); }

/* ---------- responsive: landscape ---------- */
/* timezones become a vertical rail on the left, stopwatch buttons a vertical
   stack on the right, clock centered in the middle */
@media (orientation: landscape) {
  #app {
    display: grid;
    grid-template-columns: minmax(64px, 100px) 1fr minmax(64px, 100px);
    grid-template-rows: auto 1fr;
    grid-template-areas:
      "topbar topbar topbar"
      "tz clock buttons";
    align-items: stretch;
    justify-content: stretch;
  }

  #topbar { grid-area: topbar; }
  #clockStage { grid-area: clock; }

  #tzFilmstrip {
    grid-area: tz;
    flex-direction: column;
    width: 100%;
    height: 100%;
    min-height: 0;
    padding: 6px 4px;
    gap: 4px;
  }
  #tzTrack {
    flex-direction: column;
    align-items: stretch;
    padding: 40vh 2px;
    gap: 8px;
    overflow-x: hidden;
    overflow-y: auto;
    scroll-snap-type: y mandatory;
    height: 100%;
    min-height: 0;
  }
  .tzItem { width: 100%; min-width: 0; flex-shrink: 0; }
  .tzArrow { transform: rotate(-90deg); flex-shrink: 0; }

  #stopwatchBar {
    grid-area: buttons;
    height: 100%;
    min-height: 0;
    justify-content: center;
  }
  #swButtons { flex-direction: column; gap: 10px; }

  body[data-tz="hidden"] #app {
    grid-template-columns: 0 1fr minmax(64px, 100px);
  }
}

/* ---------- responsive: landscape short screens ---------- */
@media (orientation: landscape) and (max-height: 500px) {
  #topbar { padding: 4px 10px; gap: 6px; }
  .iconbtn { padding: 5px 9px; font-size: 9px; }

  #clockStage { min-height: 0; }

  #app {
    --ring-size: min(84vh, 34vw, 380px);
  }

  #clockFace { gap: 2px; }

  #dateDisplay { font-size: clamp(0.55rem, 2.2vh, 0.75rem); }
  #zoneLabel { font-size: clamp(0.5rem, 1.8vh, 0.7rem); min-height: 0; }

  #tzFilmstrip { padding: 4px 2px; }
  #tzTrack { padding: 30vh 2px; gap: 6px; }
  .tzItem { padding: 4px 6px; }
  .tzItem .tzTime { font-size: 0.72rem; }
  .tzItem .tzName { font-size: 0.48rem; }

  #stopwatchBar { padding: 4px; }
  #swButtons { gap: 6px; }
  .swbtn { padding: 6px 14px; font-size: 0.68rem; }
}