/* ===========================================================================
   TicToc — core stylesheet
   Tailwind handles layout utilities; this file defines the colour palettes,
   keyframe motion, and a handful of bespoke micro-interactions.
   British English spellings used throughout (colour, centre, etc.).
   =========================================================================== */

/* ---- Palette: Onyx (default) ------------------------------------------- */
:root,
[data-theme="onyx"] {
  --bg: #000000;
  --bg-start: #0e0e11;
  --bg-end: #000000;
  --bg-glass: rgba(0, 0, 0, 0.72);
  --surface-glass: rgba(10, 10, 13, 0.65);
  --surface: #0a0a0a;
  --elevated: #121212;
  --fg: #fafafa;
  --muted: #8a8a8a;
  --faint: #4d4d4d;
  --line: #232323;
  --accent: #ffb000;          /* neon amber */
  --accent-soft: rgba(255, 176, 0, 0.14);
  --warn: #ffb000;
  --danger: #ff4d4d;
  --ok: #34d399;
  --shadow: 0 1px 0 rgba(255,255,255,0.04);
  --glow: 0 0 40px rgba(255, 176, 0, 0.18);
  color-scheme: dark;
}

/* ---- Palette: Warm Cream ----------------------------------------------- */
[data-theme="cream"] {
  --bg: #f5f4f0;
  --bg-start: #fafaf7;
  --bg-end: #efede5;
  --bg-glass: rgba(245, 244, 240, 0.78);
  --surface-glass: rgba(239, 238, 233, 0.72);
  --surface: #efeee9;
  --elevated: #e7e5de;
  --fg: #1c1b18;
  --muted: #6b6a63;
  --faint: #a8a69c;
  --line: #d7d5cc;
  --accent: #d62828;          /* striking solid red */
  --accent-soft: rgba(214, 40, 40, 0.10);
  --warn: #c9700a;
  --danger: #d62828;
  --ok: #2f7d4f;
  --shadow: 0 1px 0 rgba(0,0,0,0.03);
  --glow: 0 0 32px rgba(214, 40, 40, 0.12);
  color-scheme: light;
}

/* ---- Palette: Solar ----------------------------------------------------- */
[data-theme="solar"] {
  --bg: #0b132b;
  --bg-start: #121b3a;
  --bg-end: #050915;
  --bg-glass: rgba(11, 19, 43, 0.75);
  --surface-glass: rgba(17, 26, 56, 0.68);
  --surface: #111a38;
  --elevated: #182245;
  --fg: #eaf0ff;
  --muted: #8b9bc7;
  --faint: #4f5f8a;
  --line: #243056;
  --accent: #ffc46b;          /* soft amber glow */
  --accent-soft: rgba(255, 196, 107, 0.14);
  --warn: #ffc46b;
  --danger: #ff7b7b;
  --ok: #6ee7b7;
  --shadow: 0 1px 0 rgba(255,255,255,0.03);
  --glow: 0 0 48px rgba(255, 196, 107, 0.20);
  color-scheme: dark;
}

/* ---- Global base -------------------------------------------------------- */
* { box-sizing: border-box; }

html, body { height: 100%; }

body {
  background: radial-gradient(circle at 50% 0%, var(--bg-start) 0%, var(--bg-end) 100%);
  background-attachment: fixed;
  color: var(--fg);
  transition: background-color 480ms ease, color 480ms ease;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

::selection { background: var(--accent); color: var(--bg); }

/* Thin, unobtrusive scrollbars */
* { scrollbar-width: thin; scrollbar-color: var(--line) transparent; }
*::-webkit-scrollbar { width: 8px; height: 8px; }
*::-webkit-scrollbar-thumb { background: var(--line); border-radius: 8px; }
*::-webkit-scrollbar-track { background: transparent; }

/* Focus ring — visible only for keyboard users */
:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 6px;
}
button:focus:not(:focus-visible) { outline: none; }

/* Header & Sidebar Glassmorphism */
#topbar {
  background: var(--bg-glass) !important;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
}
.tt-sidebar {
  background: var(--surface-glass) !important;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
}

/* Back button design */
#backToHub {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.4rem 0.75rem;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: transparent;
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  text-decoration: none;
  cursor: pointer;
  transition: all 220ms cubic-bezier(.16,1,.3,1);
  flex-shrink: 0;
}
#backToHub:hover {
  border-color: var(--accent);
  background: var(--accent-soft);
  color: var(--fg);
  transform: translateX(-2px);
}

/* ---- Reusable component classes ---------------------------------------- */
.chronos-card {
  background: var(--surface-glass);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border: 1px solid var(--line);
  border-radius: 18px;
  transition: transform 380ms cubic-bezier(.16,1,.3,1),
              border-color 380ms ease,
              box-shadow 380ms ease;
  will-change: transform;
}
.chronos-card:hover {
  transform: translateY(-4px) scale(1.01);
  border-color: var(--accent);
  box-shadow: var(--glow);
}
.chronos-card:active { transform: translateY(-1px); }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  border: 1px solid var(--line);
  background: transparent;
  color: var(--fg);
  border-radius: 12px;
  padding: 0.6rem 1.1rem;
  font-size: 0.86rem;
  letter-spacing: 0.02em;
  cursor: pointer;
  user-select: none;
  transition: background-color 200ms ease, border-color 200ms ease,
              color 200ms ease, transform 120ms ease;
}
.btn:hover { border-color: var(--accent); }
.btn:active { transform: scale(0.97); }
.btn-primary {
  background: var(--accent);
  color: var(--bg);
  border-color: var(--accent);
  font-weight: 600;
}
.btn-primary:hover { filter: brightness(1.08); }
.btn-ghost { border-color: transparent; color: var(--muted); }
.btn-ghost:hover { color: var(--fg); border-color: var(--line); }
.btn[aria-pressed="true"] {
  background: var(--accent-soft);
  border-color: var(--accent);
  color: var(--fg);
}

.field {
  background: var(--bg);
  border: 1px solid var(--line);
  color: var(--fg);
  border-radius: 10px;
  padding: 0.55rem 0.75rem;
  font-variant-numeric: tabular-nums;
  transition: border-color 200ms ease;
}
.field:focus { border-color: var(--accent); outline: none; }

.chip {
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 0.3rem 0.85rem;
  font-size: 0.78rem;
  color: var(--muted);
  cursor: pointer;
  transition: all 180ms ease;
}
.chip[aria-pressed="true"] { color: var(--bg); background: var(--accent); border-color: var(--accent); }

.divider { height: 1px; background: var(--line); border: 0; }

/* Tabular numerals for every numeric display */
.numerals { font-variant-numeric: tabular-nums; font-feature-settings: "tnum"; }

/* Massive display typography for compact / screensaver mode */
.mega-display {
  font-weight: 200;
  letter-spacing: -0.03em;
  line-height: 0.9;
  font-size: clamp(4rem, 22vw, 22rem);
}

/* ---- View transition (dashboard <-> workspace) ------------------------- */
.view-enter { animation: viewEnter 420ms cubic-bezier(.16,1,.3,1) both; }
.view-leave { animation: viewLeave 240ms ease both; }

@keyframes viewEnter {
  from { opacity: 0; transform: translateY(18px) scale(0.985); }
  to   { opacity: 1; transform: translateY(0) scale(1); }
}
@keyframes viewLeave {
  from { opacity: 1; transform: translateY(0) scale(1); }
  to   { opacity: 0; transform: translateY(-10px) scale(0.99); }
}

.stagger > * { animation: cardIn 520ms cubic-bezier(.16,1,.3,1) both; }
@keyframes cardIn {
  from { opacity: 0; transform: translateY(20px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ---- Pulsing / running indicators -------------------------------------- */
.tick-dot {
  width: 8px; height: 8px; border-radius: 999px; background: var(--accent);
  box-shadow: 0 0 0 0 var(--accent);
  animation: pulseDot 1.6s ease-out infinite;
}
@keyframes pulseDot {
  0%   { box-shadow: 0 0 0 0 var(--accent-soft); }
  70%  { box-shadow: 0 0 0 10px transparent; }
  100% { box-shadow: 0 0 0 0 transparent; }
}

.beat-flash {
  position: absolute; inset: 0; border-radius: inherit;
  background: var(--accent); opacity: 0; pointer-events: none;
}
.beat-flash.on { animation: flash 120ms ease; }
@keyframes flash { from { opacity: 0.55; } to { opacity: 0; } }

/* ---- SVG arc ------------------------------------------------------------ */
.arc-track { stroke: var(--line); }
.arc-progress { stroke: var(--accent); transition: stroke 480ms ease; filter: drop-shadow(0 0 6px var(--accent-soft)); }
.arc-overtime .arc-progress { stroke: var(--danger); }

/* Overtime mode — subtle palette warp on the workspace */
.is-overtime { box-shadow: inset 0 0 140px rgba(255,77,77,0.10); }

/* ---- Breathing resonator ------------------------------------------------ */
.breath-shape {
  transition: transform var(--breath-dur, 4s) cubic-bezier(.37,0,.63,1),
              opacity var(--breath-dur, 4s) ease;
  filter: drop-shadow(0 0 60px var(--accent-soft));
}

/* ---- Pitch pacer ambient hue ------------------------------------------- */
.pacer-stage { transition: background-color 1200ms ease; }

/* ---- Utility: hidden but accessible ------------------------------------ */
.visually-hidden {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}

/* ---- Reduced motion ----------------------------------------------------- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
}

/* ---- Range slider (BPM, volume, etc.) ---------------------------------- */
input[type="range"] {
  -webkit-appearance: none; appearance: none;
  height: 4px; border-radius: 999px; background: var(--line); cursor: pointer;
}
input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none; appearance: none;
  width: 18px; height: 18px; border-radius: 999px;
  background: var(--accent); border: 2px solid var(--bg);
  box-shadow: var(--glow);
}
input[type="range"]::-moz-range-thumb {
  width: 18px; height: 18px; border-radius: 999px;
  background: var(--accent); border: 2px solid var(--bg);
}

/* Numeric scroller (timer) */
.dial-canvas { touch-action: none; cursor: grab; }
.dial-canvas:active { cursor: grabbing; }

/* ---- Sidebar (mobile overlay behaviour) --------------------------------- */
/* Keep the sticky sidebar flush on tall content */
#sidebar { scrollbar-gutter: stable; }

/* On small screens the sidebar slides in as an overlay */
@media (max-width: 1023px) {
  #sidebar {
    position: fixed;
    z-index: 40;
    transform: translateX(-100%);
    box-shadow: 0 0 60px rgba(0,0,0,0.4);
  }
  #sidebar.sidebar-open { transform: translateX(0); }
}

/* ---- World map (monochrome timezone map) -------------------------------- */
/* Land is painted by masking a themed colour through the blank world SVG, so
   the map follows the active palette and stays cleanly monochrome. */
.map-land {
  position: absolute; inset: 0;
  background-color: var(--map-land);
  -webkit-mask-image: url(../assets/world-blank.svg);
  mask-image: url(../assets/world-blank.svg);
  -webkit-mask-size: 100% 100%;
  mask-size: 100% 100%;
  -webkit-mask-repeat: no-repeat;
  mask-repeat: no-repeat;
  -webkit-mask-position: center;
  mask-position: center;
  pointer-events: none;
}

[data-theme="onyx"]  { --map-land: #2f2f2f; --map-ocean: #0a0a0a; --tz-band: rgba(255,255,255,0.035); --map-border: #6a6a6a; }
[data-theme="cream"] { --map-land: #cfcdc4; --map-ocean: #ecebe6; --tz-band: rgba(0,0,0,0.04); --map-border: #8d8a80; }
[data-theme="solar"] { --map-land: #243056; --map-ocean: #0d1530; --tz-band: rgba(255,255,255,0.04); --map-border: #5b6da0; }

.tz-offset-label { font-variant-numeric: tabular-nums; }

/* ===========================================================================
   Sidebar — redesigned navigation
   =========================================================================== */
.tt-sidebar {
  background: var(--surface);
  border-right: 1px solid var(--line);
  display: flex;
  flex-direction: column;
}

/* Brand block */
.tt-brand { padding: 1.25rem 1.1rem 0.9rem; }
.tt-brand-btn {
  display: flex; align-items: center; gap: 0.7rem;
  width: 100%; padding: 0.3rem; margin: -0.3rem;
  border-radius: 12px; cursor: pointer;
  background: transparent; border: 0;
  transition: background-color 180ms ease;
}
.tt-brand-btn:hover { background: var(--elevated); }
.tt-brand-mark {
  width: 38px; height: 38px; border-radius: 11px; flex-shrink: 0;
  display: inline-flex; align-items: center; justify-content: center;
  color: var(--accent);
  background: var(--accent-soft);
  border: 1px solid color-mix(in srgb, var(--accent) 35%, transparent);
}
.tt-brand-name { font-size: 1.05rem; font-weight: 600; letter-spacing: -0.02em; line-height: 1; color: var(--fg); }
.tt-brand-sub { display: block; font-size: 9px; letter-spacing: 0.18em; text-transform: uppercase; color: var(--muted); margin-top: 0.35rem; }

/* Search */
.tt-search-wrap { position: relative; padding: 0 0.85rem 0.5rem; }
.tt-search-icon {
  position: absolute; left: 1.55rem; top: 50%; transform: translateY(-60%);
  color: var(--faint); pointer-events: none; display: inline-flex;
}
.tt-search {
  width: 100%;
  background: var(--bg);
  border: 1px solid var(--line);
  color: var(--fg);
  border-radius: 10px;
  padding: 0.5rem 0.7rem 0.5rem 2.1rem;
  font-size: 0.83rem;
  transition: border-color 160ms ease, background-color 160ms ease;
}
.tt-search::placeholder { color: var(--faint); }
.tt-search:focus { outline: none; border-color: var(--accent); }
.tt-search:focus + .tt-search-icon,
.tt-search-wrap:focus-within .tt-search-icon { color: var(--accent); }

/* Nav scroll area */
.tt-nav {
  flex: 1; min-height: 0;
  overflow-y: auto;
  padding: 0.35rem 0.6rem 1.5rem;
}
.tt-nav::-webkit-scrollbar { width: 6px; }

/* Section + group labels */
.tt-section { margin-top: 1.15rem; }
.tt-section:first-child { margin-top: 0.25rem; }
.tt-section-label {
  display: flex; align-items: center; gap: 0.5rem;
  padding: 0 0.65rem 0.4rem;
  font-size: 10px; font-weight: 700; letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--muted);
}
.tt-section-label::after {
  content: ''; flex: 1; height: 1px; background: var(--line);
}
.tt-group { margin-bottom: 0.15rem; }
.tt-group-label {
  padding: 0.45rem 0.65rem 0.2rem;
  font-size: 10px; letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--faint);
}

/* Nav item */
.nav-item {
  position: relative;
  display: flex; align-items: center; gap: 0.7rem;
  width: 100%;
  padding: 0.5rem 0.65rem;
  border: 0; background: transparent;
  border-radius: 10px;
  color: var(--muted);
  font-size: 0.86rem;
  text-align: left; cursor: pointer;
  transition: background-color 150ms ease, color 150ms ease;
}
.nav-item:hover { background: var(--elevated); color: var(--fg); }
.nav-item:hover .nav-item-icon { color: var(--fg); }
.nav-item-icon {
  flex-shrink: 0; display: inline-flex; align-items: center; justify-content: center;
  width: 30px; height: 30px; border-radius: 8px;
  color: var(--muted);
  background: transparent;
  transition: color 150ms ease, background-color 150ms ease;
}
.nav-item-label { flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

/* Active state — accent bar + tinted pill */
.nav-item.is-active {
  background: var(--accent-soft);
  color: var(--fg);
  font-weight: 500;
}
.nav-item.is-active .nav-item-icon { color: var(--accent); }
.nav-item.is-active::before {
  content: '';
  position: absolute; left: -0.6rem; top: 50%; transform: translateY(-50%);
  width: 3px; height: 1.1rem; border-radius: 0 3px 3px 0;
  background: var(--accent);
}

/* Recents block */
.recents-wrap:empty { display: none; }

/* No-results note */
.tt-no-results { padding: 1rem 0.9rem; font-size: 0.83rem; color: var(--faint); }