:root {
  --violet-deep: #3A104D;
  --violet-mid:  #4B1C63;
  --violet-soft: #6C3A87;
  --teal-deep:   #0E3E46;
  --teal-mid:    #145C66;
  --teal-glow:   #2C8B96;
  --gold:        #C9A24A;
  --gold-glow:   #F0CE7C;
  --ivory:       #F5EFE1;
  --ivory-mute:  #D9CFB9;
  --ink:         #1B0A24;
  --shadow-lg:   0 20px 60px rgba(10, 3, 20, 0.55);
  --shadow-sm:   0 6px 18px rgba(10, 3, 20, 0.35);
  --radius:      18px;
  --font-serif:  "Cormorant Garamond", "Playfair Display", "Georgia", serif;
  --font-sans:   "Inter", "Helvetica Neue", system-ui, -apple-system, sans-serif;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  min-height: 100%;
  font-family: var(--font-sans);
  color: var(--ivory);
  background:
    radial-gradient(circle at 20% 15%, rgba(44, 139, 150, 0.18), transparent 55%),
    radial-gradient(circle at 80% 85%, rgba(201, 162, 74, 0.14), transparent 55%),
    linear-gradient(160deg, #1B0A24 0%, #2A0D3A 45%, #0E3E46 100%);
  background-attachment: fixed;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

.geometry-bg {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  opacity: 0.55;
  display: flex;
  align-items: center;
  justify-content: center;
  animation: slow-rotate 240s linear infinite;
}
.geometry-bg svg { width: min(900px, 120vw); height: auto; }
@keyframes slow-rotate {
  from { transform: rotate(0deg); }
  to   { transform: rotate(360deg); }
}

.sanctuary-container {
  position: relative;
  z-index: 1;
  max-width: 720px;
  margin: 0 auto;
  padding: clamp(20px, 4vw, 40px) clamp(16px, 4vw, 32px) 60px;
  display: flex;
  flex-direction: column;
  gap: clamp(18px, 3vw, 28px);
}

/* ---------- Header ---------- */
.app-header { text-align: center; padding-top: 8px; }
.mark { display: inline-block; width: 120px; margin: 0 auto 8px; }
.app-header h1 {
  font-family: var(--font-serif);
  font-weight: 500;
  font-size: clamp(2rem, 5vw, 2.75rem);
  letter-spacing: 0.06em;
  margin: 0.2em 0 0.1em;
  color: var(--ivory);
  text-shadow: 0 2px 24px rgba(201, 162, 74, 0.25);
}
.tagline {
  margin: 0;
  font-size: 0.95rem;
  color: var(--ivory-mute);
  letter-spacing: 0.05em;
}

/* ---------- Visualizer ---------- */
.visualizer-panel {
  position: relative;
  background: rgba(11, 4, 20, 0.55);
  border: 1px solid rgba(201, 162, 74, 0.18);
  border-radius: var(--radius);
  padding: 18px;
  box-shadow: var(--shadow-lg);
  overflow: hidden;
}
#oscilloscope {
  display: block;
  width: 100%;
  height: 180px;
  border-radius: 12px;
  background:
    radial-gradient(ellipse at center, rgba(44, 139, 150, 0.18), transparent 70%),
    linear-gradient(180deg, #0A0416, #150726);
}
.breath-ring {
  position: absolute;
  top: 50%;
  right: 32px;
  transform: translateY(-50%);
  width: 96px;
  height: 96px;
  border-radius: 50%;
  border: 1px solid rgba(240, 206, 124, 0.35);
  display: grid;
  place-items: center;
  transition: transform 4s cubic-bezier(0.45, 0, 0.35, 1), border-color 1s;
  background: radial-gradient(circle, rgba(201, 162, 74, 0.15), transparent 70%);
}
.breath-ring.inhale { transform: translateY(-50%) scale(1.35); border-color: rgba(240, 206, 124, 0.85); }
.breath-ring.exhale { transform: translateY(-50%) scale(0.85); border-color: rgba(44, 139, 150, 0.55); }
.breath-core {
  width: 22px; height: 22px; border-radius: 50%;
  background: radial-gradient(circle, var(--gold-glow), var(--gold) 60%, transparent 100%);
  box-shadow: 0 0 24px var(--gold);
}
.breath-cue {
  position: absolute;
  bottom: -22px;
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ivory-mute);
}
@media (max-width: 520px) {
  .breath-ring { right: 12px; width: 72px; height: 72px; }
}

/* ---------- Sensor row ---------- */
.sensor-container {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px 18px;
}
.sensor-btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: linear-gradient(135deg, var(--teal-mid), var(--teal-deep));
  color: var(--ivory);
  border: 1px solid rgba(240, 206, 124, 0.4);
  padding: 12px 18px;
  border-radius: 999px;
  font-size: 0.95rem;
  letter-spacing: 0.04em;
  cursor: pointer;
  transition: transform 0.2s, box-shadow 0.2s;
  box-shadow: var(--shadow-sm);
}
.sensor-btn:hover { transform: translateY(-1px); box-shadow: 0 10px 24px rgba(20, 92, 102, 0.45); }
.sensor-btn .dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--ivory-mute);
  box-shadow: 0 0 8px rgba(240, 206, 124, 0.4);
}
.sensor-btn.live .dot { background: var(--gold-glow); box-shadow: 0 0 14px var(--gold-glow); animation: pulse 1.4s ease-in-out infinite; }
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.35; }
}
.sensor-status {
  color: var(--ivory-mute);
  font-size: 0.9rem;
  letter-spacing: 0.03em;
}

/* ---------- HRV chips ---------- */
.hrv-chips {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  width: 100%;
  margin-top: 4px;
}
.chip {
  display: inline-flex;
  align-items: baseline;
  gap: 6px;
  padding: 8px 14px;
  background: rgba(11, 4, 20, 0.55);
  border: 1px solid rgba(240, 206, 124, 0.22);
  border-radius: 999px;
  font-size: 0.85rem;
  color: var(--ivory);
  transition: border-color 0.4s, box-shadow 0.4s;
}
.chip-label {
  color: var(--ivory-mute);
  font-size: 0.7rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
}
.chip-value {
  font-family: var(--font-serif);
  font-size: 1.15rem;
  color: var(--gold-glow);
  min-width: 28px;
  text-align: center;
}
.chip-unit {
  color: var(--ivory-mute);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
}
.chip-coherence[data-coherence="high"] {
  border-color: rgba(44, 139, 150, 0.9);
  box-shadow: 0 0 18px rgba(44, 139, 150, 0.4);
}
.chip-coherence[data-coherence="high"] .chip-value { color: var(--teal-glow); }
.chip-coherence[data-coherence="mid"] { border-color: rgba(240, 206, 124, 0.6); }
.chip-coherence[data-coherence="low"] {
  border-color: rgba(220, 90, 90, 0.55);
  box-shadow: 0 0 18px rgba(220, 90, 90, 0.25);
}
.chip-coherence[data-coherence="low"] .chip-value { color: #e28f8f; }

/* ---------- Feeling input ---------- */
.feeling-input-container { display: flex; flex-direction: column; gap: 8px; }
.feeling-input-container label {
  font-family: var(--font-serif);
  font-size: 1.05rem;
  color: var(--ivory);
  letter-spacing: 0.02em;
}
#userFeeling {
  width: 100%;
  padding: 14px 18px;
  background: rgba(11, 4, 20, 0.55);
  border: 1px solid rgba(240, 206, 124, 0.25);
  border-radius: 14px;
  color: var(--ivory);
  font-size: 1rem;
  transition: border-color 0.2s, box-shadow 0.2s;
}
#userFeeling::placeholder { color: rgba(217, 207, 185, 0.45); font-style: italic; }
#userFeeling:focus {
  outline: none;
  border-color: var(--gold-glow);
  box-shadow: 0 0 0 3px rgba(201, 162, 74, 0.18);
}

/* ---------- Reading output ---------- */
.reading-output-container {
  background: linear-gradient(160deg, rgba(58, 16, 77, 0.55), rgba(14, 62, 70, 0.55));
  border: 1px solid rgba(240, 206, 124, 0.28);
  border-radius: var(--radius);
  padding: 20px 22px;
  box-shadow: var(--shadow-lg);
  animation: fadeUp 0.55s ease-out;
}
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}
.reading-output-container h3 {
  font-family: var(--font-serif);
  color: var(--gold-glow);
  margin: 0 0 8px;
  letter-spacing: 0.06em;
  font-weight: 500;
}
.reading-text { line-height: 1.55; color: var(--ivory); font-size: 1rem; }
.reading-text strong { color: var(--gold-glow); font-weight: 600; }
.reading-meta {
  margin-top: 10px;
  font-size: 0.82rem;
  color: var(--ivory-mute);
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

/* ---------- Preset journeys ---------- */
.preset-panel {
  background: rgba(11, 4, 20, 0.45);
  border: 1px solid rgba(240, 206, 124, 0.18);
  border-radius: var(--radius);
  padding: 18px 22px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  box-shadow: var(--shadow-sm);
}
.preset-head { display: flex; justify-content: space-between; align-items: center; }
.preset-new-btn {
  background: transparent;
  border: 1px dashed rgba(240, 206, 124, 0.5);
  color: var(--gold-glow);
  padding: 6px 12px;
  border-radius: 999px;
  font-size: 0.8rem;
  letter-spacing: 0.08em;
  cursor: pointer;
  transition: background 0.2s;
}
.preset-new-btn:hover { background: rgba(240, 206, 124, 0.1); }

.preset-strip {
  display: flex;
  gap: 10px;
  overflow-x: auto;
  padding-bottom: 6px;
  scrollbar-width: thin;
  scrollbar-color: rgba(240, 206, 124, 0.35) transparent;
}
.preset-strip::-webkit-scrollbar { height: 6px; }
.preset-strip::-webkit-scrollbar-thumb { background: rgba(240, 206, 124, 0.35); border-radius: 3px; }

.preset-chip {
  flex: 0 0 auto;
  min-width: 180px;
  padding: 12px 14px;
  background: linear-gradient(160deg, rgba(58, 16, 77, 0.55), rgba(14, 62, 70, 0.45));
  border: 1px solid rgba(240, 206, 124, 0.22);
  border-radius: 14px;
  color: var(--ivory);
  cursor: pointer;
  text-align: left;
  transition: transform 0.2s, border-color 0.2s, box-shadow 0.2s;
  position: relative;
  font-family: var(--font-sans);
}
.preset-chip:hover { transform: translateY(-1px); border-color: var(--gold-glow); }
.preset-chip.playing {
  border-color: var(--gold-glow);
  box-shadow: 0 0 0 1px var(--gold-glow), 0 12px 28px rgba(201, 162, 74, 0.25);
}
.preset-chip .pname {
  display: block;
  font-family: var(--font-serif);
  font-size: 1.05rem;
  color: var(--gold-glow);
  letter-spacing: 0.02em;
  margin-bottom: 4px;
}
.preset-chip .pdesc {
  display: block;
  font-size: 0.75rem;
  color: var(--ivory-mute);
  line-height: 1.3;
  min-height: 30px;
}
.preset-chip .psteps {
  display: block;
  margin-top: 6px;
  font-size: 0.7rem;
  color: var(--ivory-mute);
  letter-spacing: 0.06em;
}
.preset-chip .pdel {
  position: absolute;
  top: 6px;
  right: 8px;
  background: none;
  border: none;
  color: var(--ivory-mute);
  cursor: pointer;
  font-size: 0.9rem;
  opacity: 0;
  transition: opacity 0.2s, color 0.2s;
}
.preset-chip:hover .pdel { opacity: 1; }
.preset-chip .pdel:hover { color: #e28f8f; }

.preset-active {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 14px;
  background: rgba(11, 4, 20, 0.55);
  border: 1px solid rgba(240, 206, 124, 0.35);
  border-radius: 12px;
  font-size: 0.85rem;
}
.preset-active-label {
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ivory-mute);
}
.preset-active-name {
  font-family: var(--font-serif);
  color: var(--gold-glow);
  font-size: 1rem;
}
.preset-active-step { color: var(--ivory-mute); font-size: 0.8rem; flex: 1; }
.preset-stop-btn {
  background: transparent;
  color: var(--ivory-mute);
  border: 1px solid rgba(240, 206, 124, 0.35);
  padding: 4px 12px;
  border-radius: 999px;
  cursor: pointer;
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}
.preset-stop-btn:hover { color: var(--gold-glow); border-color: var(--gold-glow); }

.preset-builder {
  background: rgba(11, 4, 20, 0.6);
  border: 1px solid rgba(240, 206, 124, 0.28);
  border-radius: 14px;
  padding: 16px 18px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  animation: fadeUp 0.4s ease-out;
}
.preset-builder h4 {
  font-family: var(--font-serif);
  margin: 0;
  color: var(--gold-glow);
  font-weight: 500;
  letter-spacing: 0.05em;
}
.builder-row {
  display: grid;
  gap: 10px;
  grid-template-columns: 1fr 2fr;
}
@media (max-width: 520px) { .builder-row { grid-template-columns: 1fr; } }
.builder-row label {
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ivory-mute);
}
.builder-row input {
  padding: 10px 12px;
  background: rgba(11, 4, 20, 0.55);
  border: 1px solid rgba(240, 206, 124, 0.22);
  border-radius: 10px;
  color: var(--ivory);
  font-size: 0.9rem;
  text-transform: none;
  letter-spacing: 0.02em;
}
.builder-row input:focus {
  outline: none;
  border-color: var(--gold-glow);
  box-shadow: 0 0 0 3px rgba(201, 162, 74, 0.18);
}
.builder-steps { display: flex; flex-direction: column; gap: 8px; }
.builder-step {
  display: grid;
  grid-template-columns: 1fr 1fr auto;
  gap: 8px;
  align-items: center;
}
.builder-step select,
.builder-step input {
  padding: 8px 10px;
  background: rgba(11, 4, 20, 0.55);
  border: 1px solid rgba(240, 206, 124, 0.22);
  border-radius: 10px;
  color: var(--ivory);
  font-size: 0.85rem;
}
.builder-step .step-remove {
  background: transparent;
  border: 1px solid rgba(220, 90, 90, 0.35);
  color: #e28f8f;
  border-radius: 8px;
  padding: 6px 10px;
  cursor: pointer;
  font-size: 0.75rem;
}
.builder-step .step-remove:hover { background: rgba(220, 90, 90, 0.1); }
.builder-actions { display: flex; gap: 10px; justify-content: flex-end; flex-wrap: wrap; }
.builder-add,
.builder-save,
.builder-cancel {
  padding: 8px 16px;
  border-radius: 999px;
  cursor: pointer;
  font-size: 0.8rem;
  letter-spacing: 0.06em;
}
.builder-add {
  background: transparent;
  color: var(--ivory-mute);
  border: 1px dashed rgba(240, 206, 124, 0.35);
}
.builder-add:hover { color: var(--gold-glow); border-color: var(--gold-glow); }
.builder-save {
  background: linear-gradient(135deg, var(--gold), var(--gold-glow));
  color: var(--violet-deep);
  border: 1px solid var(--gold);
  font-weight: 600;
}
.builder-save:hover { box-shadow: 0 8px 20px rgba(201, 162, 74, 0.35); }
.builder-cancel {
  background: transparent;
  color: var(--ivory-mute);
  border: 1px solid rgba(240, 206, 124, 0.22);
}
.builder-cancel:hover { color: var(--ivory); }

/* ---------- Frequency grid ---------- */
.section-heading {
  font-family: var(--font-serif);
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  font-size: 0.85rem;
  color: var(--gold);
  margin: 4px 0 12px;
}
.freq-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
  gap: 10px;
}
.freq-btn {
  position: relative;
  padding: 14px 10px;
  border-radius: 14px;
  background: rgba(11, 4, 20, 0.55);
  border: 1px solid rgba(240, 206, 124, 0.22);
  color: var(--ivory);
  font-family: var(--font-serif);
  font-size: 1.35rem;
  cursor: pointer;
  transition: transform 0.2s, background 0.2s, box-shadow 0.2s, border-color 0.2s;
}
.freq-btn span {
  display: block;
  font-family: var(--font-sans);
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  color: var(--ivory-mute);
  margin-top: 2px;
}
.freq-btn:hover {
  transform: translateY(-1px);
  border-color: rgba(240, 206, 124, 0.55);
}
.freq-btn.active {
  background: linear-gradient(135deg, rgba(201, 162, 74, 0.28), rgba(20, 92, 102, 0.42));
  border-color: var(--gold-glow);
  box-shadow: 0 0 0 1px var(--gold-glow), 0 12px 28px rgba(201, 162, 74, 0.25);
}
.freq-btn[data-note]::after {
  content: attr(data-note);
  position: absolute;
  left: 50%;
  bottom: calc(100% + 8px);
  transform: translateX(-50%);
  background: rgba(11, 4, 20, 0.92);
  border: 1px solid rgba(240, 206, 124, 0.35);
  color: var(--ivory);
  padding: 6px 10px;
  border-radius: 8px;
  font-family: var(--font-sans);
  font-size: 0.72rem;
  letter-spacing: 0.05em;
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.18s;
}
.freq-btn:hover::after { opacity: 1; }

/* ---------- Playback panel ---------- */
.playback-panel {
  background: rgba(11, 4, 20, 0.55);
  border: 1px solid rgba(240, 206, 124, 0.18);
  border-radius: var(--radius);
  padding: 20px 22px;
  box-shadow: var(--shadow-lg);
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.mix-row { display: flex; align-items: center; gap: 14px; }
.mix-label {
  min-width: 150px;
  color: var(--ivory-mute);
  font-size: 0.85rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  display: flex;
  align-items: baseline;
  gap: 8px;
}
.mix-value {
  color: var(--gold-glow);
  font-family: var(--font-serif);
  font-size: 0.9rem;
  letter-spacing: 0.05em;
  text-transform: none;
}
.mix-row input[type="range"] {
  flex: 1;
  accent-color: var(--gold);
  height: 4px;
}
.app-action-btn {
  padding: 16px 20px;
  border-radius: 14px;
  border: 1px solid var(--gold);
  background: linear-gradient(135deg, var(--violet-deep), var(--violet-mid));
  color: var(--ivory);
  font-family: var(--font-serif);
  font-size: 1.15rem;
  letter-spacing: 0.1em;
  cursor: pointer;
  box-shadow: 0 12px 32px rgba(58, 16, 77, 0.45), inset 0 0 0 1px rgba(240, 206, 124, 0.15);
  transition: transform 0.2s, background 0.2s;
  margin-top: 6px;
}
.app-action-btn:hover { transform: translateY(-1px); }
.app-action-btn.active {
  background: linear-gradient(135deg, var(--teal-mid), var(--teal-deep));
  border-color: var(--gold-glow);
  box-shadow: 0 12px 32px rgba(20, 92, 102, 0.45), 0 0 24px rgba(201, 162, 74, 0.35);
}
.session-line {
  text-align: center;
  color: var(--ivory-mute);
  font-size: 0.85rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

/* ---------- Session log ---------- */
.log-container {
  background: rgba(11, 4, 20, 0.4);
  border: 1px solid rgba(240, 206, 124, 0.14);
  border-radius: var(--radius);
  padding: 18px 22px;
}
.log-head { display: flex; align-items: center; justify-content: space-between; }
.log-actions { display: flex; gap: 10px; align-items: center; }
.log-clear,
.log-export {
  background: transparent;
  color: var(--ivory-mute);
  border: none;
  cursor: pointer;
  font-size: 0.75rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
}
.log-clear:hover { color: var(--gold-glow); }
.log-export {
  color: var(--gold);
  border: 1px solid rgba(240, 206, 124, 0.4);
  padding: 4px 12px;
  border-radius: 999px;
}
.log-export:hover { color: var(--violet-deep); background: var(--gold-glow); border-color: var(--gold-glow); }
.log-export:disabled { opacity: 0.4; cursor: not-allowed; }
.session-log {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 6px;
  max-height: 260px;
  overflow-y: auto;
}
.session-log li {
  display: grid;
  grid-template-columns: 100px 60px 1fr auto;
  gap: 12px;
  align-items: baseline;
  padding: 8px 10px;
  border-radius: 10px;
  background: rgba(11, 4, 20, 0.35);
  font-size: 0.85rem;
  color: var(--ivory);
}
.session-log li .when { color: var(--ivory-mute); font-size: 0.75rem; }
.session-log li .hz {
  color: var(--gold-glow);
  font-family: var(--font-serif);
  font-size: 1rem;
}
.session-log li .feel { color: var(--ivory); font-style: italic; }
.session-log li .dur { color: var(--ivory-mute); font-size: 0.75rem; }
.session-log:empty::before {
  content: "No sessions yet — activate the sanctuary to begin.";
  display: block;
  color: rgba(217, 207, 185, 0.55);
  font-size: 0.85rem;
  padding: 4px 0;
}

/* ---------- Footer ---------- */
.app-footer {
  text-align: center;
  color: var(--ivory-mute);
  font-size: 0.8rem;
  padding-top: 20px;
  letter-spacing: 0.04em;
}
.app-footer strong { color: var(--gold-glow); font-weight: 600; }
.finelegal {
  margin: 6px 0 0;
  font-size: 0.7rem;
  color: rgba(217, 207, 185, 0.4);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

@media (prefers-reduced-motion: reduce) {
  .geometry-bg { animation: none; }
  .breath-ring { transition: none; }
  .sensor-btn.live .dot { animation: none; }
}