:root {
  color-scheme: dark;
  --bg: #080909;
  --bg-soft: #101111;
  --panel: #111313;
  --panel-border: rgba(255, 255, 255, .08);
  --text: #f1f1ef;
  --muted: #7d807d;
  --faint: #444845;
  --accent: #6aa3ff;
  --card: #1d211f;
  --card-edge: #2a302c;
  --card-text: #f3f4ee;
  --tick: rgba(243, 244, 238, .26);
  --shadow: rgba(0, 0, 0, .46);
  --clock-font: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --custom-clock-color: #111832;
  --custom-numbers-color: #e9efff;
  --custom-bg-color: #0b1020;
  --custom-bg-image: none;
  --clock-scale: 1;
  --date-size: 14px;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }
html, body { width: 100%; height: 100%; margin: 0; overflow: hidden; }
body { background: var(--bg); color: var(--text); }
button, select { font: inherit; }
button { color: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }

body[data-theme="light"] {
  color-scheme: light;
  --bg: #eef0ec;
  --bg-soft: #f5f6f3;
  --panel: #f8f9f6;
  --panel-border: rgba(14, 21, 15, .11);
  --text: #171a17;
  --muted: #717871;
  --faint: #a4aba3;
  --accent: #1d4ed8;
  --card: #dce2da;
  --card-edge: #c5cdc4;
  --card-text: #151914;
  --tick: rgba(21, 25, 20, .25);
  --shadow: rgba(60, 70, 58, .2);
}

body[data-theme="custom"] {
  --bg: var(--custom-bg-color);
  --bg-soft: color-mix(in srgb, var(--custom-bg-color) 88%, #5577bb);
  --card: var(--custom-clock-color);
  --card-edge: color-mix(in srgb, var(--custom-clock-color) 78%, var(--custom-numbers-color));
  --card-text: var(--custom-numbers-color);
  --tick: color-mix(in srgb, var(--custom-numbers-color) 28%, transparent);
}

body[data-clock-font="monospace"] { --clock-font: Consolas, "Courier New", monospace; }
body[data-clock-font="cursive"] { --clock-font: "Segoe Script", "Brush Script MT", cursive; }

.app-shell { min-height: 100%; position: relative; isolation: isolate; background: radial-gradient(ellipse at 50% 42%, var(--bg-soft) 0%, var(--bg) 59%); opacity: 1; transform: translateY(0) scale(1); transform-origin: center bottom; filter: blur(0); transition: background .35s ease, color .35s ease, opacity .22s ease-in, transform .22s cubic-bezier(.4, 0, 1, 1), filter .22s ease-in; }
body[data-theme="custom"].has-custom-background .app-shell { background-color: var(--custom-bg-color); background-image: linear-gradient(rgba(0, 0, 0, .16), rgba(0, 0, 0, .16)), var(--custom-bg-image); background-position: center; background-repeat: no-repeat; background-size: cover; }
.topbar { height: 78px; display: flex; align-items: center; justify-content: space-between; padding: 0 4.2vw; position: relative; z-index: 2; transition: opacity .28s ease, transform .28s ease; }
.brand { display: flex; align-items: center; gap: 10px; color: inherit; letter-spacing: -.03em; font-weight: 650; font-size: 17px; line-height: 1; text-decoration: none; }
.brand-icon { width: 27px; height: 27px; display: block; flex: 0 0 auto; border-radius: 7px; object-fit: cover; transition: box-shadow .2s ease, transform .2s ease; }
.brand:hover .brand-icon, .brand:focus-visible .brand-icon { box-shadow: 0 0 18px rgba(255, 255, 255, .72), 0 0 34px rgba(255, 255, 255, .28); transform: scale(1.04); }
body[data-theme="light"] .brand:hover .brand-icon, body[data-theme="light"] .brand:focus-visible .brand-icon { box-shadow: 0 0 18px rgba(0, 0, 0, .42), 0 0 34px rgba(0, 0, 0, .16); }
body[data-theme="custom"] .brand:hover .brand-icon, body[data-theme="custom"] .brand:focus-visible .brand-icon { box-shadow: 0 0 18px rgba(106, 163, 255, .72), 0 0 34px rgba(106, 163, 255, .28); }
.topbar-actions { display: flex; gap: 10px; align-items: center; }
.icon-button, .settings-button, .bookmark-button, .close-button { border: 1px solid transparent; background: transparent; cursor: pointer; transition: color .2s ease, border-color .2s ease, background .2s ease, box-shadow .2s ease, transform .2s ease; }
.icon-button:hover, .settings-button:hover, .bookmark-button:hover,
.icon-button:focus-visible, .settings-button:focus-visible, .bookmark-button:focus-visible { background: transparent; border-color: transparent; box-shadow: none; color: var(--text); text-shadow: 0 0 8px rgba(255, 255, 255, .82), 0 0 20px rgba(255, 255, 255, .38); }
.icon-button:active, .settings-button:active, .bookmark-button:active { transform: scale(.96); }
.icon-button { width: 40px; height: 40px; display: grid; place-items: center; border-radius: 12px; color: var(--muted); }
.icon-button svg { width: 18px; height: 18px; fill: none; stroke: currentColor; stroke-width: 1.7; stroke-linecap: round; stroke-linejoin: round; }
.fullscreen-close, .icon-button.is-fullscreen .fullscreen-open { display: none; }
.icon-button.is-fullscreen .fullscreen-close { display: block; }
.settings-button { display: flex; align-items: center; gap: 9px; padding: 10px 13px; border-radius: 12px; color: var(--muted); font-size: 13px; }
.settings-button svg { width: 16px; height: 16px; fill: none; stroke: currentColor; stroke-width: 1.6; stroke-linecap: round; stroke-linejoin: round; }
.bookmark-button { display: flex; align-items: center; gap: 8px; padding: 10px 13px; border-radius: 12px; color: var(--muted); font-size: 13px; }
.bookmark-button svg { width: 16px; height: 16px; fill: none; stroke: currentColor; stroke-width: 1.6; stroke-linecap: round; stroke-linejoin: round; }

.clock-stage { position: absolute; inset: 78px 0 0; display: flex; flex-direction: column; align-items: center; justify-content: center; padding-bottom: 5vh; transition: inset .32s ease, padding .32s ease; }
.eyebrow { display: flex; gap: 9px; align-items: center; text-transform: uppercase; letter-spacing: .16em; font-size: 10px; color: var(--muted); margin-bottom: 30px; transition: opacity .28s ease, transform .28s ease; }
.live-dot { width: 6px; height: 6px; border-radius: 50%; background: #fff; box-shadow: 0 0 0 5px rgba(255, 255, 255, .12), 0 0 16px rgba(255, 255, 255, .82); }
body[data-theme="light"] .live-dot { background: #000; box-shadow: 0 0 0 5px rgba(0, 0, 0, .1), 0 0 16px rgba(0, 0, 0, .55); }
body[data-theme="custom"] .live-dot { background: var(--accent); box-shadow: 0 0 0 5px color-mix(in srgb, var(--accent) 10%, transparent), 0 0 16px var(--accent); }
.digital-clock-row { width: auto; display: flex; align-items: center; justify-content: center; gap: clamp(12px, 2vw, 32px); padding: 0 3vw; zoom: var(--clock-scale); }
.clock { display: flex; gap: clamp(7px, 1vw, 17px); align-items: center; }
.clock-group { display: flex; gap: clamp(3px, .55vw, 9px); }
.clock-separator { color: var(--card-text); font-family: var(--clock-font); font-size: clamp(46px, 8vw, 125px); font-weight: 200; line-height: .74; padding-bottom: .23em; opacity: .38; }
.digit { width: clamp(62px, 11vw, 168px); height: clamp(89px, 15vw, 218px); position: relative; border-radius: clamp(7px, .8vw, 13px); background: var(--card); box-shadow: 0 20px 45px var(--shadow), inset 0 1px 0 rgba(255,255,255,.06); color: var(--card-text); perspective: 900px; overflow: hidden; }
.digit::after { content: ""; position: absolute; z-index: 5; left: 0; right: 0; top: 50%; height: 1px; background: color-mix(in srgb, var(--card-text) 16%, transparent); box-shadow: 0 1px 0 rgba(0,0,0,.14); }
.digit-half, .flap { position: absolute; left: 0; width: 100%; height: 50%; overflow: hidden; font-family: var(--clock-font); font-variant-numeric: tabular-nums; font-size: clamp(62px, 10vw, 148px); line-height: 1; font-weight: 600; letter-spacing: -.075em; }
.digit-half span, .flap span { position: absolute; top: 0; left: 0; width: 100%; height: 200%; display: flex; align-items: center; justify-content: center; }
.digit-top { top: 0; align-items: flex-end; padding-bottom: .055em; }
.digit-bottom { bottom: 0; align-items: flex-start; padding-top: .055em; }
.digit-bottom span, .flap-bottom span { transform: translateY(-50%); }
.flap { z-index: 3; backface-visibility: hidden; transform-origin: bottom; }
.flap-top { top: 0; align-items: flex-end; padding-bottom: .055em; background: var(--card); transform: rotateX(0deg); }
.flap-bottom { bottom: 0; align-items: flex-start; padding-top: .055em; background: var(--card); transform-origin: top; transform: rotateX(90deg); z-index: 2; }
.digit.is-changing .flap-top { animation: flip-top .18s cubic-bezier(.37, .01, .6, 1) forwards; }
.digit.is-changing .flap-bottom { animation: flip-bottom .18s .17s cubic-bezier(.4, 0, .66, 1) forwards; }
@keyframes flip-top { to { transform: rotateX(-90deg); } }
@keyframes flip-bottom { to { transform: rotateX(0deg); } }
.blink-separators .clock-separator { animation: separator-blink 1s steps(1, end) infinite; }
@keyframes separator-blink { 0%, 49% { opacity: .38; } 50%, 100% { opacity: .08; } }
.meridiem { flex: 0 0 auto; color: var(--card-text); opacity: .48; font-family: var(--clock-font); font-size: clamp(23px, 4vw, 58px); font-weight: 500; line-height: 1; letter-spacing: .04em; }
.show-meridiem .digit { width: clamp(58px, 10vw, 154px); height: clamp(84px, 14vw, 204px); }
.date { margin-top: 32px; color: var(--muted); font-size: var(--date-size); letter-spacing: .08em; transition: opacity .28s ease, transform .28s ease; }
.hint { margin-top: 46px; background: none; border: 0; color: var(--faint); cursor: pointer; font-size: 11px; transition: color .2s ease, opacity .28s ease, transform .28s ease; }
.hint:hover { color: var(--muted); }
kbd { padding: 3px 6px; border: 1px solid var(--panel-border); border-radius: 5px; font-size: 10px; color: var(--muted); }

.ui-idle { cursor: none; }
.ui-idle .topbar { opacity: 0; pointer-events: none; transform: translateY(-10px); }
.ui-idle .eyebrow { opacity: 0; transform: translateY(-8px); }
.ui-idle .hint { opacity: 0; pointer-events: none; transform: translateY(8px); }
.ui-idle:not(.keep-date-visible) .date { opacity: 0; transform: translateY(8px); }
.ui-idle .clock-stage { inset: 0; padding-bottom: 0; }

.settings-panel, .about-panel { width: min(390px, calc(100vw - 36px)); position: fixed; z-index: 10; top: 18px; right: 18px; bottom: 18px; display: flex; visibility: hidden; pointer-events: none; flex-direction: column; padding: 28px 25px 22px; border: 1px solid var(--panel-border); border-radius: 18px; background: color-mix(in srgb, var(--panel) 94%, transparent); box-shadow: -20px 25px 80px rgba(0,0,0,.3); backdrop-filter: blur(22px); transform: translateX(calc(100% + 30px)); transition: transform .35s cubic-bezier(.2,.75,.25,1), visibility 0s .35s; }
.settings-panel.is-open, .about-panel.is-open { visibility: visible; pointer-events: auto; transform: translateX(0); transition-delay: 0s; }
body[data-theme="dark"] .settings-panel, body[data-theme="dark"] .about-panel { --panel-border: rgba(255, 255, 255, .34); --text: #fff; --muted: rgba(255, 255, 255, .9); --faint: rgba(255, 255, 255, .54); --accent: #fff; color: var(--text); }
body[data-theme="light"] .settings-panel, body[data-theme="light"] .about-panel { --panel-border: rgba(0, 0, 0, .3); --text: #000; --muted: rgba(0, 0, 0, .82); --faint: rgba(0, 0, 0, .48); --accent: #000; color: var(--text); }
.panel-scrim { position: fixed; inset: 0; z-index: 8; background: rgba(0,0,0,.28); opacity: 0; pointer-events: none; transition: opacity .35s ease; }
.panel-scrim.is-visible { opacity: 1; pointer-events: auto; }
.settings-heading { display: flex; justify-content: space-between; align-items: flex-start; border-bottom: 1px solid var(--panel-border); padding-bottom: 24px; }
h2 { margin: 0; font-size: 23px; letter-spacing: -.04em; }
.close-button { width: 34px; height: 34px; display: grid; flex: 0 0 auto; place-items: center; color: var(--muted); border-radius: 9px; padding: 0; }
.close-button svg { width: 18px; height: 18px; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; }
.close-button:hover { color: var(--text); }
.settings-content { min-height: 0; display: flex; flex: 1; flex-direction: column; gap: 24px; overflow-y: auto; overflow-anchor: none; overscroll-behavior: contain; padding: 27px 5px 2px 0; scrollbar-width: thin; scrollbar-color: var(--faint) transparent; }
.setting-group, .setting-row { display: flex; flex-direction: column; gap: 11px; }
.setting-row { flex-direction: row; justify-content: space-between; align-items: center; }
.setting-label { font-size: 12px; font-weight: 650; letter-spacing: .02em; }
.group-title { color: var(--accent); text-transform: uppercase; letter-spacing: .13em; font-size: 9px; }
.setting-description { display: block; margin-top: 5px; color: var(--muted); font-size: 11px; }
.range-heading { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.range-heading output { color: var(--muted); font-family: Consolas, "Courier New", monospace; font-size: 10px; }
.range-input { width: 100%; height: 16px; margin: 0; accent-color: var(--accent); cursor: pointer; }
.range-input:disabled { opacity: .35; cursor: not-allowed; }
.segmented-control, .theme-options, .font-options { display: grid; grid-template-columns: 1fr 1fr; gap: 5px; padding: 4px; border: 1px solid var(--panel-border); border-radius: 10px; background: color-mix(in srgb, var(--accent) 5%, transparent); }
.theme-options, .font-options { grid-template-columns: repeat(3, 1fr); }
.segment, .theme-option { border: 0; border-radius: 7px; padding: 9px 6px; background: transparent; color: var(--muted); cursor: pointer; font-size: 11px; transition: all .2s ease; }
.segment.active, .theme-option.active { background: color-mix(in srgb, var(--accent) 12%, var(--panel)); color: var(--text); box-shadow: inset 0 0 0 1px color-mix(in srgb, var(--accent) 48%, transparent), 0 2px 8px var(--shadow); }
.select-wrap { position: relative; }
select { width: 100%; padding: 12px 35px 12px 13px; border: 1px solid var(--panel-border); border-radius: 9px; outline: 0; appearance: none; background: var(--panel); color: var(--text); cursor: pointer; font-size: 11px; }
select option { background-color: #171a18; color: #f1f1ef; }
body[data-theme="light"] select option { background-color: #f8f9f6; color: #171a17; }
select:focus-visible { border-color: color-mix(in srgb, var(--accent) 55%, transparent); box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 10%, transparent); }
.select-wrap svg { position: absolute; right: 12px; top: 50%; width: 15px; height: 15px; pointer-events: none; transform: translateY(-50%); fill: none; stroke: var(--muted); stroke-width: 1.7; stroke-linecap: round; stroke-linejoin: round; }
.switch { position: relative; display: inline-flex; flex: 0 0 auto; cursor: pointer; }
.switch input { position: absolute; inset: 0; width: 100%; height: 100%; margin: 0; opacity: 0; cursor: pointer; }
.switch-track { width: 38px; height: 22px; border-radius: 20px; padding: 3px; background: var(--faint); transition: background .2s ease; }
.switch-track::after { content: ""; display: block; width: 16px; height: 16px; border-radius: 50%; background: var(--panel); transition: transform .2s ease; box-shadow: 0 1px 3px rgba(0,0,0,.25); }
.switch input:checked + .switch-track { background: var(--accent); }
.switch input:checked + .switch-track::after { transform: translateX(16px); }
.switch input:disabled + .switch-track { opacity: .35; cursor: not-allowed; }
.is-disabled { opacity: .42; }
.theme-option { display: flex; align-items: center; justify-content: center; gap: 7px; }
.theme-swatch { width: 12px; height: 12px; border-radius: 50%; border: 1px solid var(--panel-border); }
.dark-swatch { background: #161918; }
.light-swatch { background: #e5e9e3; }
.custom-theme-icon { width: 15px; height: 15px; flex: 0 0 auto; fill: none; stroke: var(--muted); stroke-width: 1.4; }
.custom-theme-icon .color-dot { stroke: none; }
.custom-theme-icon .dot-blue { fill: #6aa3ff; }
.custom-theme-icon .dot-white { fill: #e9efff; }
.custom-theme-icon .dot-warm { fill: #f59e0b; }
.monospace-preview { font-family: Consolas, "Courier New", monospace; }
.cursive-preview { font-family: "Segoe Script", "Brush Script MT", cursive; }
.custom-colors { display: flex; flex-direction: column; gap: 10px; padding: 13px; border: 1px solid var(--panel-border); border-radius: 10px; background: color-mix(in srgb, var(--accent) 5%, transparent); }
.custom-colors[hidden] { display: none; }
.color-setting { display: flex; align-items: center; justify-content: space-between; gap: 12px; color: var(--muted); font-size: 11px; }
.color-control { display: flex; align-items: center; gap: 8px; }
.color-control code { min-width: 58px; color: var(--muted); font-family: Consolas, "Courier New", monospace; font-size: 10px; text-transform: uppercase; }
input[type="color"] { width: 34px; height: 28px; padding: 2px; border: 1px solid var(--panel-border); border-radius: 7px; background: var(--panel); cursor: pointer; }
input[type="color"]::-webkit-color-swatch-wrapper { padding: 1px; }
input[type="color"]::-webkit-color-swatch { border: 0; border-radius: 4px; }
.background-image-setting { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding-top: 11px; border-top: 1px solid var(--panel-border); }
.background-image-copy { min-width: 0; display: flex; flex-direction: column; gap: 4px; color: var(--muted); font-size: 11px; }
.background-image-copy small { max-width: 145px; overflow: hidden; color: var(--faint); font-size: 9px; text-overflow: ellipsis; white-space: nowrap; }
.background-image-actions { display: flex; gap: 6px; }
.background-image-actions button { padding: 7px 9px; border: 1px solid var(--panel-border); border-radius: 7px; background: transparent; color: var(--muted); cursor: pointer; font-size: 9px; transition: color .2s ease, border-color .2s ease, background .2s ease; }
.background-image-actions button:hover { color: var(--text); border-color: color-mix(in srgb, var(--accent) 40%, transparent); background: color-mix(in srgb, var(--accent) 7%, transparent); }
.background-image-actions button:disabled { opacity: .45; cursor: wait; }
.background-image-actions button[hidden] { display: none; }
.reset-colors-button { width: 100%; display: flex; align-items: center; justify-content: center; gap: 7px; margin-top: 3px; padding: 9px 10px; border: 1px solid var(--panel-border); border-radius: 8px; background: transparent; color: var(--muted); cursor: pointer; font-size: 10px; transition: color .2s ease, border-color .2s ease, background .2s ease; }
.reset-colors-button svg { width: 13px; height: 13px; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
.reset-colors-button:hover { color: var(--text); border-color: color-mix(in srgb, var(--accent) 40%, transparent); background: color-mix(in srgb, var(--accent) 7%, transparent); }
.settings-footer { margin-top: 5px; padding-top: 20px; border-top: 1px solid var(--panel-border); display: flex; align-items: center; gap: 7px; color: var(--muted); font-size: 10px; }
.save-check { color: var(--accent); font-size: 13px; }

.about-content { min-height: 0; display: flex; flex: 1; flex-direction: column; align-items: center; justify-content: center; padding: 32px 0 12px; text-align: center; }
.about-logo { width: 76px; height: 76px; display: block; margin-bottom: 25px; border: 0; border-radius: 19px; object-fit: cover; box-shadow: 0 14px 35px var(--shadow); }
.about-content h3 { margin: 0; color: var(--text); font-size: 20px; letter-spacing: -.035em; }
.about-version { margin: 8px 0 0; color: var(--muted); font-size: 11px; }
.about-links { width: 100%; display: flex; flex-direction: column; gap: 7px; margin-top: 34px; }
.about-links a { width: 100%; display: flex; align-items: center; justify-content: space-between; padding: 13px 14px; border: 1px solid var(--panel-border); border-radius: 10px; background: color-mix(in srgb, var(--accent) 4%, transparent); color: var(--text); cursor: pointer; font-size: 12px; text-decoration: none; transition: border-color .2s ease, background .2s ease, transform .2s ease; }
.about-links a:hover { border-color: color-mix(in srgb, var(--accent) 52%, transparent); background: color-mix(in srgb, var(--accent) 10%, transparent); }
.about-links a:active { transform: scale(.985); }
.about-links a span:last-child { color: var(--accent); font-size: 15px; }
.author-link { margin-top: auto; padding: 12px; border: 0; background: transparent; color: var(--muted); cursor: pointer; font-size: 11px; text-decoration: none; }
.author-link strong { color: var(--accent); font-weight: 650; }

@media (max-width: 700px) {
  .topbar { height: 68px; padding: 0 20px; }
  .clock-stage { inset: 68px 0 0; }
  .digital-clock-row { gap: 9px; padding: 0 2vw; }
  .clock { gap: 5px; }
  .digit { width: clamp(45px, 14vw, 92px); height: clamp(65px, 21vw, 135px); }
  .show-meridiem .digit { width: clamp(42px, 12.5vw, 84px); height: clamp(61px, 19vw, 123px); }
  .digit-half, .flap { font-size: clamp(46px, 14vw, 86px); }
  .clock-separator { font-size: clamp(35px, 10vw, 72px); }
  .meridiem { font-size: clamp(18px, 5.5vw, 34px); }
  .settings-button span, .bookmark-button span { display: none; }
}

@media (max-width: 940px) {
  .settings-button span, .bookmark-button span { display: none; }
}