@font-face {
  font-family: "DS-Digital";
  src: url("fonts/DS-DIGIT.TTF") format("truetype");
  font-weight: 700;
  font-style: italic;
}
@font-face {
  font-family: "DS-Digital";
  src: url("fonts/DS-DIGII.TTF") format("truetype");
  font-weight: 400;
  font-style: italic;
}

:root {
  --clock-color: #ff9500;
  --icon: #e6e6e6;
  --scale: 1;
  --zoom: 1;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html,
body {
  height: 100%;
  background: #000;
  overflow: hidden;
}

/* Centre the scaled canvas in the window. */
body {
  display: flex;
  align-items: center;
  justify-content: center;
}

/* The design is laid out on a 2166 x 1291 canvas that is scaled to fit the window. */
.stage {
  flex: none;
  width: 2166px;
  height: 1291px;
  transform: scale(var(--scale));
}

/* Centre the title, time and date on the canvas. */
.clock {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 100%;
  color: var(--clock-color);
  transform: scale(var(--zoom));
}

.title {
  font-family: "Segoe UI Light", "Segoe UI", "Open Sans", sans-serif;
  font-weight: 300;
  font-size: 101px;
  line-height: normal;
  white-space: nowrap;
}

.time {
  margin-top: 45px;
  /* Optical centring: the italic digits lean right of their layout box. */
  margin-right: 21px;
  font-family: "DS-Digital", monospace;
  font-weight: 700;
  font-style: italic;
  font-size: 452px;
  line-height: normal;
  white-space: nowrap;
  transform: scaleX(0.93);
}

/* The colon is drawn as two slanted blocks centred in each half of the digit, rather than the font's glyph. */
.colon {
  position: relative;
  color: transparent;
}
.colon::before,
.colon::after {
  content: "";
  position: absolute;
  width: 0.0951em;
  height: 0.0852em;
  border-radius: 0.0066em;
  background: var(--clock-color);
  transform: skewX(-4deg);
}
.colon::before {
  left: 0.0907em;
  top: 0.3363em;
}
.colon::after {
  left: 0.0752em;
  top: 0.5686em;
}

/*
 * Every digit sits in a fixed-width cell (the font's 560/1100 em advance) so the row never shifts.
 * The font draws "1" with a narrow advance on the left; moving it 292/1100 em to the right lines its
 * strokes up with the right-hand segments of the other digits, like a real seven-segment display.
 */
.digit {
  display: inline-block;
  width: 0.5091em;
}
.digit-one {
  text-indent: 0.2655em;
}

.ampm {
  display: inline-block;
  position: relative;
  top: -3px;
  margin-left: 40px;
  /* Balances the overflow from the horizontal stretch below so the row stays centred. */
  margin-right: 34px;
  font-size: 217px;
  transform: scaleX(1.06);
  transform-origin: 0 0;
}

.ampm[hidden] {
  display: none;
}

.date {
  margin-top: 58px;
  /* Balances the larger line boxes of the digit rows so the whole group centres vertically. */
  margin-bottom: 28px;
  font-size: 101px;
  line-height: normal;
  letter-spacing: 15.3px;
  /* Letter-spacing also trails the last character; mostly cancel it so the glyphs centre (the rest offsets the italic lean). */
  margin-right: -7.3px;
  word-spacing: -17px;
  font-family: "DS-Digital", monospace;
  font-weight: 400;
  font-style: italic;
  white-space: pre;
}

.controls {
  position: fixed;
  top: 18px;
  right: 29px;
  display: flex;
  gap: 9px;
  z-index: 1;
}

.controls button {
  width: 19px;
  height: 19px;
  padding: 0;
  border: 0;
  background: none;
  cursor: pointer;
  opacity: 0.8;
}
.controls button:hover {
  opacity: 1;
}

.controls svg {
  width: 100%;
  height: 100%;
  fill: none;
  stroke: var(--icon);
  stroke-width: 1;
  stroke-linecap: round;
  stroke-linejoin: round;
}

#fullscreen .fs-exit,
#fullscreen.is-fullscreen .fs-enter {
  display: none;
}
#fullscreen.is-fullscreen .fs-exit {
  display: inline;
}

/* Settings drawer */
.backdrop {
  position: fixed;
  inset: 0;
  z-index: 2;
  background: rgba(0, 0, 0, 0.5);
}
.backdrop[hidden] {
  display: none;
}

.drawer {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  z-index: 3;
  width: min(320px, 100vw);
  padding: 20px 24px;
  overflow-y: auto;
  background: #121212;
  border-left: 1px solid #2a2a2a;
  color: #e6e6e6;
  font-family: "Segoe UI", "Open Sans", sans-serif;
  transform: translateX(100%);
  transition: transform 0.25s ease;
}
.drawer.open {
  transform: none;
}

.drawer-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
}
.drawer h2,
.about h2 {
  font-size: 20px;
  font-weight: 400;
}

.drawer-close {
  width: 32px;
  height: 32px;
  padding: 8px;
  border: 0;
  border-radius: 4px;
  background: none;
  cursor: pointer;
}
.drawer-close:hover {
  background: #222;
}
.drawer-close svg {
  width: 100%;
  height: 100%;
  stroke: #e6e6e6;
  stroke-width: 1.5;
  stroke-linecap: round;
}

.setting {
  margin-bottom: 28px;
}
.setting h3 {
  margin-bottom: 10px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #8a8a8a;
}

.segmented {
  display: grid;
  grid-template-columns: 1fr 1fr;
  border: 1px solid #333;
  border-radius: 6px;
  overflow: hidden;
}
.segmented input,
.swatch input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}
.segmented span {
  display: block;
  padding: 9px 0;
  text-align: center;
  font-size: 14px;
  cursor: pointer;
}
.segmented label + label span {
  border-left: 1px solid #333;
}
.segmented input:checked + span {
  background: var(--clock-color);
  color: #000;
}
.segmented input:focus-visible + span {
  outline: 2px solid #fff;
  outline-offset: -4px;
}

.swatches {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 14px;
}
.swatch span {
  display: block;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: var(--swatch) padding-box;
  border: 2px solid transparent;
  box-shadow: inset 0 0 0 3px #121212;
  cursor: pointer;
}
.swatch input:checked + span {
  border-color: #e6e6e6;
}
.swatch input:focus-visible + span {
  outline: 2px solid #fff;
  outline-offset: 2px;
}

.custom-color {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  cursor: pointer;
}
.custom-color input {
  width: 36px;
  height: 28px;
  padding: 0;
  border: 1px solid #333;
  border-radius: 4px;
  background: none;
  cursor: pointer;
}

.controls svg .dot {
  fill: var(--icon);
  stroke: none;
}

/* About modal */
.about {
  margin: auto;
  width: min(520px, calc(100vw - 32px));
  padding: 0;
  border: 1px solid #2a2a2a;
  border-radius: 10px;
  background: #121212;
  color: #e6e6e6;
  font-family: "Segoe UI", "Open Sans", sans-serif;
}
.about::backdrop {
  background: rgba(0, 0, 0, 0.6);
}

.about-body {
  padding: 20px 24px 24px;
  font-size: 14px;
  line-height: 1.6;
}
.about-body .drawer-header {
  margin-bottom: 2px;
}
.about-body p + p {
  margin-top: 12px;
}
.about h2 small {
  font-size: 0.6em;
}
.about-role {
  margin-bottom: 16px;
  font-size: 8px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--clock-color);
}

.about-links {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 20px;
}
.about-links a {
  padding: 6px 12px;
  border: 1px solid #333;
  border-radius: 6px;
  color: #e6e6e6;
  font-size: 13px;
  text-decoration: none;
}
.about-links a:hover {
  border-color: var(--clock-color);
  color: var(--clock-color);
}
.about-links a:focus-visible {
  outline: 2px solid #fff;
  outline-offset: 2px;
}

/* Icons take on the clock colour on hover. */
.controls button:hover svg,
.drawer-close:hover svg {
  stroke: var(--clock-color);
}
.controls button:hover svg .dot {
  fill: var(--clock-color);
}

/* Larger type for the about modal on desktop; it grows with the screen so it stays in proportion to the clock. */
@media (min-width: 768px) {
  .about {
    font-size: clamp(17px, 0.85vw, 24px);
    width: min(37.5em, calc(100vw - 32px));
  }
  .about-body {
    padding: 1.6em 1.9em 1.9em;
    font-size: 1em;
  }
  .about h2 {
    font-size: 1.5em;
  }
  .about-role {
    font-size: 0.6em;
  }
  .about-links a {
    padding: 0.5em 0.9em;
    font-size: 0.88em;
  }
  .about .drawer-close {
    width: 1.9em;
    height: 1.9em;
    padding: 0.45em;
  }
}