/* --- Base Styles & Typography --- */
:root {
    --bg-dark: #121212;
    --bg-light: #1E1E1E;
    --text-primary: #FFFFFF;
    --text-secondary: #B3B3B3;
    --accent-color: #1DB954; /* A vibrant green, similar to Spotify */
    --border-color: #2c2c2c;
    --shadow-color: rgba(0, 0, 0, 0.5);
}

body {
    background-color: var(--bg-dark);
    color: var(--text-primary);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    margin: 0;
    line-height: 1.6;
}

.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 20px;
}

a {
    color: var(--accent-color);
    text-decoration: none;
    transition: color 0.3s ease;
}

a:hover {
    color: var(--text-primary);
}

/* --- Header --- */
header {
    background-color: var(--bg-dark);
    border-bottom: 1px solid var(--border-color);
    padding: 1rem 0;
}

header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap; /* Allow items to wrap on smaller screens */
}

.header-left {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    flex-grow: 1; /* Allow header-left to take available space */
    position: relative;
}

.header-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    white-space: nowrap; /* Prevent title from wrapping */
    text-align: center;
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
}

header nav {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    margin-left: auto; /* Push nav to the right within header-left */
    flex-wrap: wrap; /* Allow nav items to wrap */
}

@media (max-width: 720px) {
    .header-left {
        justify-content: center;
        flex-wrap: wrap;
    }
    .header-title {
        position: static;
        transform: none;
    }
    header nav {
        margin-left: 0;
        justify-content: center;
    }
}

header nav a {
    color: var(--text-secondary);
    font-weight: 500;
    white-space: nowrap;
}

.button.subscribe-button {
    padding: 0.5rem 1rem;
    border: none;
    border-radius: 8px;
    background-color: var(--accent-color);
    color: var(--bg-dark);
    font-size: 0.9rem;
    font-weight: 700;
    cursor: pointer;
    transition: background-color 0.3s ease;
    white-space: nowrap;
}

.button.subscribe-button:hover {
    background-color: #17a849;
}

.language-selector select {
    background-color: var(--bg-light);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 0.5rem;
    font-size: 0.9rem;
    white-space: nowrap;
}

/* Remove unused styles for logo-icon and header-right */
.logo-icon,
.logo-icon path,
.logo-icon circle,
.logo-icon polyline,
.header-right {
    display: none;
}


/* --- Main Content --- */
main {
    padding: 2rem 0;
}

.site-intro {
    margin: 0 0 16px;
    color: var(--text-secondary);
    font-size: 0.98rem;
    text-align: center;
}

/* --- Tabs --- */
.tabs {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 6px;
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 6px;
  margin-bottom: 20px;
}
.tab-link {
  padding: 10px 20px;
  cursor: pointer;
  background-color: var(--bg-light);
  border: 1px solid var(--border-color);
  border-radius: 8px 8px 0 0;
  font-weight: 600;
  color: var(--text-secondary);
  text-align: center;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.tab-link.active {
  background-color: var(--bg-dark);
  border-color: var(--border-color);
  color: var(--text-primary);
  box-shadow: inset 0 -2px 0 var(--accent-color);
}
.tab-content {
  display: none;
}
.tab-content.active {
  display: block;
}
.tab-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 14px;
  flex-wrap: wrap;
}
.tab-head .br-title,
.tab-head .clockbox-title,
.tab-head .foot-title {
  margin: 0;
  line-height: 1.2;
}
.tab-head .br-title,
.tab-head .clockbox-title {
  flex: 1;
  text-align: center;
}
.tab-head .share-btn {
  margin-left: auto;
}
.share-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  padding: 0;
  border-radius: 6px;
  border: none;
  background: transparent;
  color: #f3f4f6;
  font-weight: 600;
  cursor: pointer;
  transition: transform .2s ease, opacity .2s ease;
  align-self: baseline;
}
.share-btn:hover {
  opacity: 0.8;
}
.share-btn:active {
  transform: translateY(1px);
}
.share-btn:focus-visible {
  outline: 2px solid #3b82f6;
  outline-offset: 2px;
}
.share-btn.is-copied {
  opacity: 0.7;
}
.share-icon-img {
  width: 32px;
  height: auto;
  object-fit: contain;
  display: block;
  transform: translateY(8px);
}
.share-toast {
  position: fixed;
  right: 20px;
  bottom: 20px;
  padding: 10px 14px;
  border-radius: 999px;
  background: rgba(10, 10, 10, 0.9);
  color: #fff;
  font-weight: 700;
  font-size: 0.92rem;
  border: 1px solid #2c2c2c;
  box-shadow: 0 12px 24px rgba(0,0,0,.3);
  opacity: 0;
  transform: translateY(10px);
  pointer-events: none;
  transition: opacity .2s ease, transform .2s ease;
  z-index: 1000;
}
.share-toast.is-visible {
  opacity: 1;
  transform: translateY(0);
}


/* Breathing Timer Styles */
.br-embed .br-wrapper{max-width:920px;margin:28px auto;padding:20px 18px;background:#1E1E1E;border:1px solid #2c2c2c;border-radius:12px;box-shadow:0 2px 10px rgba(0,0,0,.06);font-family: 'Segoe UI',system-ui,-apple-system,Roboto,Helvetica,Arial,sans-serif;color:#fff}
.br-embed .br-title{font-size:1.1rem;font-weight:800;margin-bottom:14px}
.br-embed .br-layout{display:grid;grid-template-columns:1fr;gap:18px}
@media(min-width:880px){.br-embed .br-layout{grid-template-columns: 1.1fr .9fr}}
.br-embed .br-timer{display:flex;flex-direction:column;align-items:center;gap:12px}
.br-embed .br-circle{width:260px;height:260px;border-radius:50%;position:relative;display:grid;place-items:center;transition:background .25s ease;overflow:hidden}
.br-embed .br-circle[data-phase="INHALE"]{background: radial-gradient(ellipse at center, rgba(239,68,68,.14), rgba(239,68,68,0));}
.br-embed .br-circle[data-phase="EXHALE"]{background: radial-gradient(ellipse at center, rgba(59,130,246,.14), rgba(59,130,246,0));}
.br-embed .br-ring{position:absolute;inset:0;transform:rotate(-90deg)}
.br-embed .br-track{fill:none;stroke:#333;stroke-width:10}
.br-embed .br-progress{fill:none;stroke:#ef4444;stroke-width:10;stroke-linecap:round;stroke-dasharray: 326; stroke-dashoffset: 326; transition: stroke .2s ease}
.br-embed .br-bubble{position:absolute;inset:0;margin:auto;width:84%;height:84%;border-radius:50%;pointer-events:none;transform:scale(0.2);opacity:.9;}
.br-embed .br-bubble-in{background:radial-gradient(ellipse at center, rgba(239,68,68,.28), rgba(239,68,68,0) 70%)}
.br-embed .br-bubble-ex{background:radial-gradient(ellipse at center, rgba(59,130,246,.28), rgba(59,130,246,0) 70%)}
.br-embed .br-center{position:relative;z-index:2;text-align:center;display:flex;flex-direction:column;align-items:center;gap:6px}
.br-embed .br-phase{font-weight:800;font-size:14px;color:#ccc}
.br-embed .br-time{font-variant-numeric:tabular-nums;font-size:2.2rem;font-weight:900;letter-spacing:.5px;color:#fff}
.br-embed .br-controls{display:flex;gap:8px;flex-wrap:wrap}
.br-embed .br-btn{appearance:none;border:1px solid #444;background:#222;padding:10px 16px;border-radius:12px;cursor:pointer;font-weight:700;color:#fff}
.br-embed .br-btn.primary{background:var(--accent-color);border-color:var(--accent-color);color:#111}
.br-embed .br-btn.danger{background:#5a1d1d;border-color:#fecaca2b;color:#ffc2c2}
.br-embed .br-settings{background:#222;border:1px solid #444;border-radius:10px;padding:12px}
.br-embed .br-setting-stack{display:flex;flex-direction:column;gap:10px}
.br-embed .br-row{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:10px;align-items:center}
.br-embed .br-row.br-row-unit{grid-template-columns:max-content minmax(0,1fr) max-content}
.br-embed .br-row > *{min-width:0}
.br-embed .br-row.center{display:flex;justify-content:center;margin-top:8px}
.br-embed .br-row label{font-size:14px;color:#ccc}
.br-embed .br-row.br-row-unit label{white-space:nowrap}
.br-embed .br-unit{font-size:13px;color:#9aa0a6;white-space:nowrap}
.br-embed .br-input{width:100%;max-width:100%;border:1px solid #444;border-radius:12px;padding:12px 12px;font-size:16px;background:#333;color:#fff;box-sizing:border-box}
.br-embed input[type="number"].br-input{text-align:center}
.br-embed .br-input:disabled{background:#444;color:#888}
.br-embed #br-in-sec,
.br-embed #br-ex-sec{
  color:#fff;
  -webkit-text-fill-color:#fff;
}
.br-embed .br-nudge-row{display:grid;grid-template-columns:40px 1fr 40px;align-items:center;gap:10px;margin-top:-6px;margin-bottom:6px}
.br-embed .br-nudge{appearance:none;border:1px solid #444;background:#333;border-radius:12px;padding:10px;font-weight:900;cursor:pointer;touch-action:manipulation;color:#fff}
.br-embed .br-nudge:active{transform:scale(0.98)}
.br-embed .br-nudge-label{font-size:12px;color:#888;text-align:center}
.br-embed .br-sync-mini{width:72px;height:40px;border:1px solid #444;border-radius:12px;background:#333;font-weight:900;cursor:pointer;color:#fff}
.br-embed .br-sync-mini[aria-pressed="true"]{background:var(--accent-color);color:#111;border-color:var(--accent-color)}
.br-embed .br-note{font-size:12.5px;color:#888;margin-top:10px}
.br-embed .br-status{display:flex;gap:16px;margin-top:8px;font-size:12px;color:#ccc}
.br-embed .br-total{margin-top:16px;padding:14px 12px;background:#222;border:1px solid #444;border-radius:10px;display:flex;align-items:center;justify-content:space-between}
.br-embed .br-total-label{font-size:14px;color:#ccc;font-weight:700}
.br-embed .br-total-time{font-variant-numeric:tabular-nums;font-weight:900;font-size:1.6rem;color:#fff}
.br-embed .pulse{animation: brPulse .6s ease-out}
@keyframes brPulse{0%{transform:scale(1)}50%{transform:scale(1.03)}100%{transform:scale(1)}}

/* Stopwatch (CO2 Table) Styles */
.sw-embed .clockbox-wrapper { display:flex; justify-content:center; margin:30px auto; }
.sw-embed .clockbox { background:#1E1E1E; border-radius:10px; padding:20px 30px; box-shadow:0 2px 10px rgba(0,0,0,.1); max-width:720px; width:100%; text-align:center; font-family: 'Segoe UI', system-ui, -apple-system, Roboto, Helvetica, Arial, sans-serif; color: #fff;}
.sw-embed .clockbox-title { font-size:1.2rem; font-weight:700; margin-bottom:16px; color:#fff; }
.sw-embed .sw-time { font-variant-numeric: tabular-nums; font-size:2rem; font-weight:800; color:#fff; margin-bottom:12px; }
.sw-embed .sw-controls { display:flex; justify-content:center; gap:10px; flex-wrap:wrap; margin-bottom:14px; position:relative; z-index:10; }
.sw-embed .sw-btn { appearance:none; border:1px solid #444; background:#222; padding:8px 14px; border-radius:10px; cursor:pointer; font-weight:600; user-select:none; -webkit-user-select:none; display:inline-block; position:relative; z-index:11; color: #fff;}
.sw-embed .sw-btn.primary { background:var(--accent-color); color:#111; border-color:var(--accent-color); }
.sw-embed .sw-btn.danger { background:#5a1d1d; color:#ffc2c2; border-color:#fecaca2b; }
.sw-embed .sw-btn[disabled] { opacity:.5; cursor:not-allowed; }
.sw-embed .sw-grid { display:grid; grid-template-columns: 1fr; gap:12px; }
@media(min-width:640px){.sw-embed .sw-grid{grid-template-columns: 1fr 1fr;}}
.sw-embed .sw-panel { background:#222; border:1px solid #444; border-radius:10px; padding:12px; text-align:left; }
.sw-embed .sw-panel h3 { margin:0 0 8px; font-size:14px; color:#ccc; }
.sw-embed table.sw-list { width:100%; border-collapse:collapse; font-size:13px; }
.sw-embed .sw-list th, .sw-embed .sw-list td { padding:6px 4px; border-bottom:1px dashed #444; text-align:right; }
.sw-embed .sw-list th { color: #aaa; }
.sw-embed .sw-list th:first-child, .sw-embed .sw-list td:first-child { text-align:left; }
.sw-embed canvas#sw-chart { width:100%; height:220px; border:1px solid #444; border-radius:8px; background:#111; display:block; pointer-events:none; position:relative; z-index:0; }
.sw-embed .sw-footer { display:flex; flex-wrap:wrap; gap:8px; margin-top:8px; }
.sw-embed .sw-note { font-size:12px; color:#888; margin-top:6px; }
.sw-embed .sw-legend { display:flex; align-items:center; gap:12px; font-size:12px; color:#ccc; margin:4px 0 8px; }
.sw-embed .sw-dot { width:10px; height:10px; border-radius:50%; display:inline-block; }
.sw-embed .sw-dot.lap { background:#ef4444; }
.sw-embed .sw-dot.rest { background:#3b82f6; }
.sw-embed .sw-sec .int{font-size:1.35em; font-weight:700; line-height:1;}
.sw-embed .sw-sec .dec{font-size:.85em; opacity:.8; margin-left:1px; line-height:1;}
.sw-embed td.lap.active  { background: rgba(239, 68, 68, .18); transition: background .2s ease; animation: swPulseLap 1s ease-in-out infinite; animation-delay: 0s; animation-fill-mode: both; }
.sw-embed td.rest.active { background: rgba(59, 130, 246, .18); transition: background .2s ease; animation: swPulseRest 1s ease-in-out infinite; animation-delay: 0s; animation-fill-mode: both; }
.sw-embed td.saved { animation: swSaved .6s ease-out; }

/* --- Sequence Generator --- */
.sequence-embed {
  max-width: 1200px;
  margin: 22px auto 40px;
  padding: 20px;
  background: #1E1E1E;
  border: 1px solid #2c2c2c;
  border-radius: 14px;
  color: #fff;
}

.sequence-title {
  margin: 0;
  font-size: 1.2rem;
  font-weight: 800;
}

.sequence-subtitle {
  margin: 0 0 18px;
  text-align: center;
  color: var(--text-secondary);
  font-size: 0.95rem;
}

.sequence-panel {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.sequence-info-box {
  background: #222;
  border: 1px solid #444;
  border-radius: 12px;
  padding: 16px;
}

.sequence-info-box h3 {
  margin: 0 0 8px;
  color: #fff;
  font-size: 1rem;
}

.sequence-info-box ul {
  margin: 0 0 0 18px;
  display: grid;
  gap: 6px;
}

.sequence-sublist {
  margin: 6px 0 0 16px;
  display: grid;
  gap: 4px;
}

.sequence-upload {
  background: #222;
  border: 2px dashed #444;
  border-radius: 14px;
  padding: 28px 20px;
  text-align: center;
  cursor: pointer;
  transition: border-color 0.2s ease, background 0.2s ease;
  position: relative;
}

.sequence-upload:hover {
  background: #262626;
  border-color: #555;
}

.sequence-upload.is-drag {
  background: rgba(78, 205, 196, 0.14);
  border-color: rgba(78, 205, 196, 0.8);
}

.sequence-upload input[type="file"] {
  position: absolute;
  inset: 0;
  opacity: 0;
  cursor: pointer;
}

.sequence-upload-icon {
  font-size: 2.5rem;
  margin-bottom: 10px;
}

.sequence-upload p {
  margin: 6px 0 0;
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.sequence-video-preview {
  width: 100%;
  max-width: 420px;
  margin: 0 auto;
  border-radius: 12px;
  display: none;
  background: #000;
}

.sequence-video-info {
  display: none;
  background: #222;
  border: 1px solid #444;
  border-radius: 10px;
  padding: 12px 14px;
  font-size: 0.9rem;
  line-height: 1.4;
}

.sequence-trim {
  display: grid;
  gap: 10px;
  padding: 12px 14px;
  border-radius: 12px;
  border: 1px solid #444;
  background: #1b1b1b;
}

.sequence-trim-header {
  font-weight: 700;
  font-size: 0.92rem;
}

.sequence-trim-range {
  position: relative;
  height: 32px;
  border-radius: 999px;
  background: linear-gradient(90deg, rgba(255,255,255,0.12) 0%, rgba(255,255,255,0.12) var(--trim-start, 0%), rgba(255,255,255,0.85) var(--trim-start, 0%), rgba(255,255,255,0.85) var(--trim-end, 100%), rgba(255,255,255,0.12) var(--trim-end, 100%), rgba(255,255,255,0.12) 100%);
}

.sequence-trim-range input[type="range"] {
  position: absolute;
  left: 0;
  top: 0;
  width: 100%;
  margin: 0;
  pointer-events: auto;
  touch-action: none;
  height: 32px;
  background: transparent;
}

.sequence-trim-range input[type="range"]::-webkit-slider-thumb {
  appearance: none;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  border: 2px solid #fff;
  background: #111;
  box-shadow: 0 0 0 2px rgba(0,0,0,0.4);
}

.sequence-trim-range input[type="range"]::-moz-range-thumb {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  border: 2px solid #fff;
  background: #111;
  box-shadow: 0 0 0 2px rgba(0,0,0,0.4);
}

#sequenceTrimStart {
  z-index: 2;
}

#sequenceTrimEnd {
  z-index: 3;
}

.sequence-trim-values {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(90px, 1fr));
  gap: 8px 10px;
  align-items: center;
  font-size: 0.82rem;
  color: var(--text-secondary);
}

.sequence-trim-values strong {
  color: #fff;
  font-variant-numeric: tabular-nums;
  font-weight: 700;
}

.sequence-mask {
  background: #222;
  border: 1px solid #444;
  border-radius: 10px;
  padding: 12px 14px;
  display: grid;
  gap: 10px;
}

.sequence-mask-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.sequence-mask-source {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.sequence-mask-toggle {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.9rem;
  color: #fff;
  cursor: pointer;
}

.sequence-mask-toggle input {
  width: 16px;
  height: 16px;
  accent-color: var(--accent-color);
}

.sequence-mask-clear {
  border: 1px solid #444;
  border-radius: 10px;
  background: #1b1b1b;
  color: #fff;
  padding: 8px 12px;
  font-weight: 700;
  cursor: pointer;
  transition: background 0.2s ease, transform 0.2s ease;
}

.sequence-mask-clear:hover {
  background: #262626;
  transform: translateY(-1px);
}

.sequence-mask-body {
  display: grid;
  gap: 10px;
  padding: 10px;
  border-radius: 10px;
  border: 1px dashed transparent;
  cursor: pointer;
}

.sequence-mask-body.is-drag {
  border-color: rgba(78, 205, 196, 0.8);
  background: rgba(78, 205, 196, 0.08);
}

.sequence-mask-body input[type="file"] {
  color: #fff;
}

#sequenceMaskPreview {
  display: none;
  max-width: 220px;
  border-radius: 10px;
  border: 1px solid #444;
  background: #111;
}

.sequence-mask-hint {
  margin: 0;
  font-size: 0.82rem;
  color: var(--text-secondary);
}

.sequence-mask-generator {
  display: grid;
  gap: 12px;
  padding: 12px;
  border-radius: 12px;
  border: 1px solid #444;
  background: #1b1b1b;
}

.sequence-mask-generator-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}

.sequence-mask-title {
  font-weight: 700;
  font-size: 0.95rem;
}

.sequence-mask-actions {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.sequence-mask-select {
  min-width: 160px;
  padding: 8px 10px;
  border-radius: 10px;
  border: 1px solid #444;
  background: #222;
  color: #fff;
  font-weight: 600;
}

.sequence-mask-status {
  font-size: 0.8rem;
  color: var(--text-secondary);
  align-self: center;
}

.sequence-mask-presets {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}

.sequence-mask-preset {
  border: 1px solid #444;
  border-radius: 10px;
  background: #222;
  color: #fff;
  padding: 8px 10px;
  font-weight: 700;
  font-size: 0.8rem;
  cursor: pointer;
  transition: transform 0.2s ease, background 0.2s ease;
}

.sequence-mask-preset:hover {
  background: #2d2d2d;
  transform: translateY(-1px);
}

#sequenceMaskCanvas {
  width: 100%;
  max-width: 320px;
  aspect-ratio: 1 / 1;
  border-radius: 10px;
  border: 1px solid #444;
  background: #000;
}

.sequence-mask-controls {
  display: grid;
  gap: 10px;
}

.sequence-mask-controls label {
  display: grid;
  gap: 6px;
  font-size: 0.85rem;
  color: #fff;
}

.sequence-mask-control {
  user-select: none;
}

.sequence-mask-control span {
  user-select: none;
}

.sequence-mask-value {
  justify-self: end;
  font-variant-numeric: tabular-nums;
  color: var(--text-secondary);
  font-size: 0.78rem;
}

.sequence-mask-controls input[type="range"] {
  width: 100%;
}

.sequence-mask-controls select {
  width: 100%;
  padding: 8px 10px;
  border-radius: 8px;
  border: 1px solid #444;
  background: #2a2a2a;
  color: #fff;
}

.sequence-controls {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 12px;
}

.sequence-control-group {
  background: #222;
  border: 1px solid #444;
  padding: 14px;
  border-radius: 10px;
  min-width: 0;
}

.sequence-toggle {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.9rem;
  color: #fff;
  font-weight: 700;
}

.sequence-toggle input {
  width: 16px;
  height: 16px;
  accent-color: var(--accent-color);
}

.sequence-control-group label {
  display: block;
  margin-bottom: 8px;
  font-weight: 700;
  font-size: 0.9rem;
}

.sequence-control-group input[type="number"],
.sequence-control-group select {
  width: 100%;
  max-width: 100%;
  padding: 10px 12px;
  border: 1px solid #444;
  border-radius: 10px;
  background: #333;
  color: #fff;
  font-weight: 600;
  box-sizing: border-box;
}

.sequence-auto-group .sequence-auto-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 8px;
  align-items: center;
  min-width: 0;
}

.sequence-auto-group .sequence-auto-row input[type="number"] {
  min-width: 0;
}

.sequence-auto-btn {
  border: 1px solid #444;
  border-radius: 10px;
  background: #222;
  color: #fff;
  padding: 10px 14px;
  font-weight: 700;
  cursor: pointer;
  white-space: nowrap;
  transition: transform 0.2s ease, background 0.2s ease;
}

.sequence-auto-btn:hover {
  background: #2d2d2d;
  transform: translateY(-1px);
}

.sequence-auto-meta {
  margin-top: 8px;
  font-size: 0.82rem;
  color: var(--text-secondary);
}

.sequence-preset-buttons {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-top: 8px;
}

.sequence-preset-btn {
  flex: 1;
  min-width: 60px;
  padding: 6px 8px;
  border: 1px solid #444;
  border-radius: 8px;
  background: #333;
  color: #fff;
  cursor: pointer;
  font-weight: 700;
  transition: transform 0.2s ease, background 0.2s ease;
}

.sequence-preset-btn:hover {
  background: #3a3a3a;
  transform: translateY(-1px);
}

.sequence-overlap-note {
  margin-top: 8px;
  font-size: 0.82rem;
  color: var(--text-secondary);
}

.sequence-generate-btn {
  width: 100%;
  padding: 14px;
  border: 1px solid var(--accent-color);
  border-radius: 12px;
  background: var(--accent-color);
  color: #111;
  font-size: 1.05rem;
  font-weight: 800;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.sequence-generate-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.sequence-generate-btn:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: 0 6px 18px rgba(102, 126, 234, 0.35);
}

.sequence-progress {
  display: none;
  width: 100%;
  height: 26px;
  background: rgba(255, 255, 255, 0.15);
  border-radius: 999px;
  overflow: hidden;
}

.sequence-progress.is-active {
  display: block;
}

.sequence-progress-bar {
  height: 100%;
  background: linear-gradient(90deg, #4ECDC4 0%, #667eea 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.85rem;
  transition: width 0.3s ease;
}

.sequence-preview {
  display: none;
  background: #222;
  border: 1px solid #444;
  border-radius: 12px;
  padding: 18px;
}

.sequence-preview.is-active {
  display: block;
}

.sequence-preview h3 {
  margin: 0 0 12px;
  text-align: center;
  font-size: 1.05rem;
}

.sequence-preview canvas {
  width: 100%;
  border-radius: 10px;
  background: #000;
  margin-bottom: 12px;
}

.sequence-download-btn {
  width: 100%;
  padding: 12px;
  border: 1px solid #444;
  border-radius: 10px;
  background: #222;
  color: #fff;
  font-size: 1rem;
  font-weight: 700;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.sequence-download-btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.25);
}

@media (max-width: 760px) {
  .sequence-controls {
    grid-template-columns: 1fr;
  }
}
@keyframes swSaved {
  0%   { box-shadow: inset 0 0 0 0 rgba(0,0,0,0); }
  40%  { box-shadow: inset 0 0 0 2px rgba(16,185,129,.35); }
  100% { box-shadow: inset 0 0 0 0 rgba(0,0,0,0); }
}
@keyframes swPulseLap {
  0% { background: rgba(239, 68, 68, .28); }
  50% { background: rgba(239, 68, 68, .14); }
  100% { background: rgba(239, 68, 68, .28); }
}
@keyframes swPulseRest {
  0% { background: rgba(59, 130, 246, .28); }
  50% { background: rgba(59, 130, 246, .14); }
  100% { background: rgba(59, 130, 246, .28); }
}

/* --- Blog Section --- */
#blog-posts {
    padding: 4rem 20px;
    border-top: 1px solid var(--border-color);
}
.blog-title {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-primary);
    text-align: center;
    margin-bottom: 3rem;
}
.blog-post {
    background-color: var(--bg-light);
    padding: 2rem;
    border-radius: 12px;
    margin-bottom: 2rem;
    position: relative;
    overflow: hidden;
}
.blog-post h3 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-top: 0;
    margin-bottom: 1rem;
}
.blog-post h3 .guide-title-link {
    color: inherit;
    text-decoration: none;
    border-bottom: 1px solid rgba(255, 255, 255, 0.2);
    padding-bottom: 2px;
    transition: border-color 0.2s ease, color 0.2s ease;
}
.blog-post h3 .guide-title-icon {
    margin-left: 6px;
    font-size: 0.95em;
    color: var(--text-secondary);
}
.blog-post h3 .guide-title-link:hover,
.blog-post h3 .guide-title-link:focus-visible {
    color: var(--accent-color);
    border-color: var(--accent-color);
}
.blog-post p {
    color: var(--text-secondary);
    line-height: 1.7;
}
.guide-graph {
    margin: 1.2rem 0 1.4rem;
    padding: 1rem 1.2rem;
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 12px;
    background: rgba(10, 10, 10, 0.35);
}
.guide-graph-title {
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.6rem;
}
.guide-graph svg {
    display: block;
    width: 100%;
    height: auto;
}
.guide-graph figcaption {
    margin-top: 0.5rem;
    font-size: 0.85rem;
    color: var(--text-secondary);
}
/* Ensure no CO2 background watermark remains */
.blog-post[data-tab="co2"]::before {
    content: none !important;
    background-image: none !important;
}
.guide-details {
    margin: 1.2rem 0 0.6rem;
    padding: 0.9rem 1rem;
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 12px;
    background: rgba(10, 10, 10, 0.35);
}
.guide-details summary {
    cursor: pointer;
    font-weight: 700;
    color: var(--text-primary);
    list-style: none;
}
.guide-details summary::-webkit-details-marker {
    display: none;
}
.guide-details summary::after {
    content: "+";
    float: right;
    color: var(--text-secondary);
}
.guide-details[open] summary::after {
    content: "–";
}
.guide-details-body {
    margin-top: 0.7rem;
    color: var(--text-secondary);
    line-height: 1.7;
}
.guide-details-body ul {
    margin: 0.6rem 0 0;
    padding-left: 1.2rem;
}
.guide-details-body li {
    margin: 0.4rem 0;
}
.guide-details-body h4,
.guide-details-body h5,
.guide-details-body h6 {
    margin: 0.8rem 0 0.4rem;
    color: var(--text-primary);
}
.guide-details-body hr {
    border: 0;
    border-top: 1px dashed rgba(255, 255, 255, 0.12);
    margin: 1rem 0;
}
.guide-details-body table {
    width: 100%;
    border-collapse: collapse;
    margin: 0.6rem 0 1rem;
    font-size: 0.95rem;
}
.guide-details-body th,
.guide-details-body td {
    border: 1px solid rgba(255, 255, 255, 0.1);
    padding: 8px 10px;
    text-align: left;
}
.guide-details-body th {
    background: rgba(255, 255, 255, 0.06);
    color: var(--text-primary);
}
.guide-details-body .checklist {
    list-style: none;
    padding-left: 0;
}
.guide-details-body .checklist li {
    position: relative;
    padding-left: 20px;
}
.guide-details-body .checklist li::before {
    content: "✓";
    position: absolute;
    left: 0;
    color: var(--accent-color);
}
.button.back-to-timers-button {
    display: inline-block;
    margin-top: 1rem;
    padding: 0.6rem 1.2rem;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    background-color: transparent;
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}
.button.back-to-timers-button:hover {
    background-color: var(--accent-color);
    color: var(--bg-dark);
    border-color: var(--accent-color);
}

/* Subscribe Section */
#subscribe {
    padding: 1.5rem 0 2.5rem;
    border-top: 1px solid var(--border-color);
}

#subscribe .subscribe-title {
    margin: 0 0 8px;
    font-size: 1.4rem;
    font-weight: 700;
}

#subscribe .subscribe-desc {
    margin: 0 0 6px;
    color: var(--text-secondary);
}

#subscribe .subscribe-note {
    margin: 0 0 14px;
    color: #8b8b8b;
    font-size: 0.9rem;
}

.subscribe-status {
    margin: 6px 0 12px;
    font-size: 0.92rem;
    font-weight: 600;
    color: var(--text-secondary);
}

.subscribe-status[data-state="success"] {
    color: #7ee2a8;
}

.subscribe-status[data-state="error"] {
    color: #f87171;
}

.subscribe-status.is-hidden {
    display: none;
}

.subscribe-form {
    display: grid;
    gap: 10px;
    max-width: 520px;
}

.subscribe-form input,
.subscribe-form textarea {
    width: 100%;
    border: 1px solid #444;
    border-radius: 12px;
    padding: 12px 14px;
    font-size: 0.98rem;
    background: #333;
    color: #fff;
    box-sizing: border-box;
}

.subscribe-form textarea {
    resize: vertical;
    min-height: 120px;
}

.subscribe-form input::placeholder,
.subscribe-form textarea::placeholder {
    color: #9aa0a6;
}

.button.subscribe-cta {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 0.6rem 1.2rem;
    border-radius: 10px;
    background-color: var(--accent-color);
    color: var(--bg-dark);
    font-weight: 700;
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    border: 0;
    white-space: nowrap;
}

/* --- Footer --- */
footer {
    border-top: 1px solid var(--border-color);
    padding: 2rem 0;
    text-align: center;
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-top: 2rem;
}

/* --- Foot Analysis App --- */
.foot-app {
    margin-top: 32px;
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.foot-hero {
    display: grid;
    grid-template-columns: 1fr;
    gap: 12px;
    align-items: start;
    background: radial-gradient(circle at top left, rgba(29,185,84,0.18), transparent 55%),
                linear-gradient(135deg, rgba(33,33,33,0.9), rgba(14,14,14,0.9));
    border: 1px solid var(--border-color);
    border-radius: 18px;
    padding: 18px 20px;
}

.foot-kicker {
    font-size: 0.85rem;
    letter-spacing: 0.02em;
    text-transform: none;
    color: var(--accent-color);
}

.foot-title {
    font-size: 1.9rem;
    margin: 6px 0 6px;
}

.foot-subtitle {
    margin: 0;
    color: var(--text-secondary);
    max-width: 520px;
    line-height: 1.5;
}

.foot-privacy-line {
    margin: 10px 0 0;
    color: var(--text-secondary);
    font-size: 0.85rem;
}


.foot-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
}

.foot-card {
    background: var(--bg-light);
    border: 1px solid var(--border-color);
    border-radius: 18px;
    padding: 16px;
    box-shadow: 0 10px 26px rgba(0,0,0,0.22);
}

.foot-card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
    margin-bottom: 12px;
}

.foot-controls,
.foot-actions {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    margin-top: 14px;
}

.foot-btn {
    border: 1px solid var(--border-color);
    background: transparent;
    color: var(--text-primary);
    padding: 8px 14px;
    border-radius: 10px;
    cursor: pointer;
    font-weight: 600;
}

.foot-btn.primary {
    background: var(--accent-color);
    border-color: var(--accent-color);
    color: var(--bg-dark);
}

.foot-btn.ghost {
    background: rgba(255,255,255,0.04);
}

.foot-camera {
    position: relative;
    border-radius: 16px;
    overflow: hidden;
    background: #0f0f0f;
    height: 220px;
    margin-bottom: 12px;
}

.foot-camera video {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.foot-guide {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: flex-end;
    justify-content: center;
    padding: 12px;
    pointer-events: none;
}

.foot-guide-frame {
    position: absolute;
    inset: 12px;
    border: 2px dashed rgba(255,255,255,0.35);
    border-radius: 16px;
}

.foot-guide-text {
    background: rgba(0,0,0,0.6);
    color: #fff;
    padding: 6px 12px;
    border-radius: 999px;
    font-size: 0.8rem;
}

.foot-capture-row {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 10px;
    margin-bottom: 12px;
}

.foot-capture-row .foot-btn,
.foot-capture-row .foot-upload {
    grid-column: span 2;
}

.foot-check {
    flex-direction: row;
    align-items: center;
    gap: 8px;
    font-size: 0.82rem;
    color: var(--text-secondary);
}

.foot-check input {
    width: 16px;
    height: 16px;
    accent-color: var(--accent-color);
}

.foot-capture-status {
    margin: 6px 0 10px;
    font-size: 0.82rem;
    color: var(--text-secondary);
    background: rgba(29,185,84,0.08);
    border: 1px solid rgba(29,185,84,0.2);
    border-radius: 10px;
    padding: 8px 10px;
}

.foot-capture-status.is-error {
    color: #fca5a5;
    border-color: rgba(239,68,68,0.35);
    background: rgba(239,68,68,0.1);
}

.foot-field {
    display: flex;
    flex-direction: column;
    gap: 6px;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.foot-field input,
.foot-field select {
    background: #111;
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    padding: 8px 10px;
}

.foot-inline {
    display: grid;
    grid-template-columns: 1fr 120px;
    gap: 8px;
}

.foot-upload {
    display: flex;
    align-items: center;
    gap: 8px;
}

.foot-upload input {
    display: none;
}

.foot-tips {
    margin: 0 0 12px;
    padding-left: 18px;
    color: var(--text-secondary);
    font-size: 0.82rem;
}

.foot-preview-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 10px;
    max-width: 680px;
    margin: 0 auto;
}

.foot-preview-slot {
    border: 1px dashed var(--border-color);
    border-radius: 12px;
    min-height: 120px;
    aspect-ratio: 4 / 3;
    position: relative;
    display: grid;
    place-items: center;
    color: var(--text-secondary);
    font-size: 0.8rem;
    overflow: hidden;
    background: #0f0f0f;
}

.foot-preview-slot img {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: contain;
    background: #0b0b0b;
}

.foot-preview-label {
    position: absolute;
    top: 8px;
    left: 8px;
    padding: 4px 10px;
    border-radius: 999px;
    background: rgba(0, 0, 0, 0.58);
    color: #f0f0f0;
    font-size: 0.72rem;
    letter-spacing: 0.01em;
    pointer-events: none;
    z-index: 2;
}

.foot-preview-slot.is-active {
    outline: 2px solid var(--accent-color);
    outline-offset: 2px;
}


.foot-progress {
    font-weight: 700;
    color: var(--accent-color);
}

.foot-form {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 10px;
}

.foot-results {
    margin-top: 14px;
    display: grid;
    gap: 8px;
    background: #0f0f0f;
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 12px;
}

.foot-results-header {
    display: grid;
    grid-template-columns: 1fr 110px 110px;
    align-items: center;
    gap: 12px;
    padding-bottom: 6px;
    border-bottom: 1px solid var(--border-color);
}

.foot-results-title {
    font-weight: 700;
    font-size: 0.95rem;
    color: var(--text-primary);
}

.foot-results-col {
    color: var(--text-secondary);
    font-size: 0.8rem;
    text-align: right;
    white-space: nowrap;
}

.foot-result-row {
    display: grid;
    grid-template-columns: 1fr 110px 110px;
    align-items: center;
    gap: 8px;
    background: #111;
    border: 1px solid var(--border-color);
    border-radius: 10px;
    padding: 8px 10px;
    font-size: 0.82rem;
    color: var(--text-secondary);
}

.foot-result-row strong {
    color: var(--text-primary);
    font-weight: 700;
    text-align: right;
}

.foot-result-row-toe {
    min-height: 88px;
    align-items: start;
}

.foot-result-row-toe strong {
    display: inline-flex;
    flex-direction: column;
    align-items: flex-end;
    justify-content: flex-start;
    gap: 6px;
}

.foot-toe-inline {
    display: inline-flex;
    align-items: center;
    justify-content: flex-end;
}

.foot-toe-guide {
    height: 52px;
    width: auto;
    max-width: 72px;
    border-radius: 6px;
    object-fit: contain;
    border: 0;
    background: transparent;
}

.foot-toe-guide.mirror {
    transform: scaleX(-1);
}

.foot-result {
    background: #111;
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 9px 10px;
    display: flex;
    justify-content: space-between;
    font-size: 0.82rem;
    color: var(--text-secondary);
}

.foot-result strong {
    color: var(--text-primary);
}

.foot-note {
    margin-top: 10px;
    color: var(--text-secondary);
    font-size: 0.8rem;
}


.foot-reco-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 10px;
}

.foot-reco-card {
    background: #101010;
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 10px;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.foot-reco-top {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
}

.foot-score {
    background: rgba(29,185,84,0.18);
    color: var(--accent-color);
    font-weight: 700;
    padding: 6px 10px;
    border-radius: 999px;
}

.foot-reco-meta {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 5px;
    font-size: 0.72rem;
    color: var(--text-secondary);
}

.foot-reco-footer {
    display: flex;
    justify-content: space-between;
    font-size: 0.72rem;
    color: var(--text-secondary);
}

.foot-reco-empty,
.foot-history-empty {
    padding: 18px;
    border: 1px dashed var(--border-color);
    border-radius: 14px;
    text-align: center;
    color: var(--text-secondary);
}

.foot-history-list {
    display: grid;
    gap: 10px;
}

.foot-history-item {
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 9px 10px;
    display: flex;
    justify-content: space-between;
    gap: 12px;
    background: #101010;
}

.foot-history-date {
    font-weight: 600;
}

@media (max-width: 900px) {
    .foot-grid { grid-template-columns: 1fr; }
    .foot-reco-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 600px) {
    .foot-hero { flex-direction: column; }
    .foot-form { grid-template-columns: 1fr; }
    .foot-results-header { grid-template-columns: 1fr 1fr; }
    .foot-results-col { text-align: right; }
    .foot-result-row { grid-template-columns: 1fr 1fr; row-gap: 4px; }
    .foot-result-row span { grid-column: 1 / -1; }
    .foot-reco-grid { grid-template-columns: 1fr; }
    .foot-capture-row { grid-template-columns: 1fr; }
    .foot-capture-row .foot-btn,
    .foot-capture-row .foot-upload { grid-column: span 1; }
}