@import url("https://fonts.googleapis.com/css2?family=Manrope:wght@400;500;700;800&family=IBM+Plex+Mono:wght@400;500&display=swap");

:root {
  --bg: #edf1f5;
  --bg-soft: #f7f9fb;
  --panel: rgba(255, 255, 255, 0.9);
  --panel-solid: #ffffff;
  --line: rgba(15, 23, 42, 0.1);
  --line-strong: rgba(15, 23, 42, 0.16);
  --text: #111827;
  --muted: #5f6b7a;
  --muted-soft: #7b8794;
  --accent: #2563eb;
  --accent-soft: rgba(37, 99, 235, 0.08);
  --accent-strong: #1d4ed8;
  --shadow: 0 14px 36px rgba(15, 23, 42, 0.08);
  --body-overlay: rgba(255, 255, 255, 0.7);
  --body-glow: rgba(37, 99, 235, 0.07);
  --button-hover-border: rgba(37, 99, 235, 0.28);
  --button-hover-bg: rgba(255, 255, 255, 1);
  --button-disabled-bg: rgba(148, 163, 184, 0.18);
  --button-disabled-border: rgba(148, 163, 184, 0.32);
  --track-shadow: 0 10px 24px rgba(15, 23, 42, 0.06);
  --badge-bg: rgba(15, 23, 42, 0.06);
  --grid-line: rgba(15, 23, 42, 0.06);
  --grid-header-bg: rgba(247, 249, 251, 0.96);
  --grid-divider: rgba(15, 23, 42, 0.12);
  --grid-cell-bg: rgba(255, 255, 255, 0.55);
  --cell-hover-mix: white;
  --active-cell-inset: rgba(255, 255, 255, 0.35);
  --radius: 1rem;
  color-scheme: light;
}

:root[data-theme="dark"] {
  --bg: #111315;
  --bg-soft: #181b1f;
  --panel: rgba(24, 27, 31, 0.9);
  --panel-solid: #20242a;
  --line: rgba(255, 255, 255, 0.08);
  --line-strong: rgba(255, 255, 255, 0.14);
  --text: #f3f4f6;
  --muted: #a2acb8;
  --muted-soft: #818b97;
  --accent: #6b8cff;
  --accent-soft: rgba(107, 140, 255, 0.14);
  --accent-strong: #86a0ff;
  --shadow: 0 24px 52px rgba(0, 0, 0, 0.34);
  --body-overlay: rgba(9, 10, 12, 0.58);
  --body-glow: rgba(255, 255, 255, 0.035);
  --button-hover-border: rgba(255, 255, 255, 0.18);
  --button-hover-bg: rgba(49, 55, 64, 0.96);
  --button-disabled-bg: rgba(255, 255, 255, 0.08);
  --button-disabled-border: rgba(255, 255, 255, 0.12);
  --track-shadow: 0 18px 34px rgba(0, 0, 0, 0.26);
  --badge-bg: rgba(255, 255, 255, 0.08);
  --grid-line: rgba(255, 255, 255, 0.06);
  --grid-header-bg: rgba(27, 31, 36, 0.96);
  --grid-divider: rgba(255, 255, 255, 0.12);
  --grid-cell-bg: rgba(255, 255, 255, 0.04);
  --cell-hover-mix: #0f1115;
  --active-cell-inset: rgba(255, 255, 255, 0.12);
  color-scheme: dark;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Manrope", "Segoe UI", sans-serif;
  color: var(--text);
  background:
    linear-gradient(180deg, var(--body-overlay), var(--body-overlay)),
    radial-gradient(circle at top left, var(--body-glow), transparent 18rem),
    var(--bg);
}

button,
input,
select {
  font: inherit;
}

button {
  cursor: pointer;
}

.app-shell {
  width: min(1380px, calc(100% - 2rem));
  margin: 0 auto;
  padding: 1rem 0 2rem;
}

.card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  backdrop-filter: blur(10px);
}

.topbar {
  display: grid;
  gap: 1rem;
  align-items: end;
  padding: 1.25rem;
}

.topbar__copy {
  max-width: 52rem;
}

.eyebrow {
  margin: 0 0 0.45rem;
  color: var(--muted-soft);
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.76rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.topbar h1,
.guide h2 {
  margin: 0;
  line-height: 1.02;
  letter-spacing: -0.04em;
}

.topbar h1 {
  font-size: clamp(2rem, 4vw, 3.35rem);
}

.topbar p {
  margin: 0.85rem 0 0;
  max-width: 42rem;
  color: var(--muted);
  font-size: 0.98rem;
  line-height: 1.6;
}

.transport {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  padding: 0.72rem 1rem;
  background: var(--panel-solid);
  color: var(--text);
  text-decoration: none;
  transition: background 160ms ease, border-color 160ms ease, transform 160ms ease;
}

.button:hover,
.button:focus-visible {
  outline: none;
  border-color: var(--button-hover-border);
  background: var(--button-hover-bg);
  transform: translateY(-1px);
}

.button:disabled {
  cursor: not-allowed;
  opacity: 0.55;
  transform: none;
}

.button--primary {
  background: var(--accent);
  border-color: var(--accent);
  color: #ffffff;
}

.button--primary:hover,
.button--primary:focus-visible {
  background: var(--accent-strong);
  border-color: var(--accent-strong);
}

.button--accent {
  background: #0f172a;
  border-color: #0f172a;
  color: #ffffff;
}

.button--accent:hover,
.button--accent:focus-visible {
  background: #020617;
  border-color: #020617;
}

.button--support {
  background: #f59e0b;
  border-color: #f59e0b;
  color: #111827;
}

.button--support:hover,
.button--support:focus-visible {
  background: #fbbf24;
  border-color: #fbbf24;
}

.button--paypal {
  background: #2563eb;
  border-color: #2563eb;
  color: #ffffff;
}

.button--paypal:hover,
.button--paypal:focus-visible {
  background: #1d4ed8;
  border-color: #1d4ed8;
}

.button--theme {
  background: var(--accent-soft);
  border-color: color-mix(in srgb, var(--accent) 28%, var(--line-strong));
  color: var(--text);
}

.button--theme:hover,
.button--theme:focus-visible {
  background: color-mix(in srgb, var(--accent) 18%, var(--panel-solid));
  border-color: color-mix(in srgb, var(--accent) 40%, var(--line-strong));
}

.button--contact {
  background: #e5eefc;
  border-color: #bfd1f6;
  color: #15305f;
}

.button--contact:hover,
.button--contact:focus-visible {
  background: #d7e6fd;
  border-color: #9ebcf3;
}

.button--disabled-link,
.button--disabled-link:hover,
.button--disabled-link:focus-visible {
  background: var(--button-disabled-bg);
  border-color: var(--button-disabled-border);
  color: var(--muted-soft);
  cursor: not-allowed;
  pointer-events: none;
  transform: none;
}

.button__brand-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 1.4rem;
  padding: 0.12rem 0.42rem;
  border-radius: 999px;
  font-size: 0.76rem;
  font-weight: 800;
  letter-spacing: 0.01em;
  white-space: nowrap;
}

.button__brand-badge--paypal {
  background: rgba(255, 255, 255, 0.18);
  color: #ffffff;
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.18);
}

.button__brand-badge--contact {
  background: rgba(21, 48, 95, 0.08);
  color: #15305f;
  box-shadow: inset 0 0 0 1px rgba(21, 48, 95, 0.12);
}

:root[data-theme="dark"] .button--contact {
  background: #28303a;
  border-color: #3a4755;
  color: #e8eef7;
}

:root[data-theme="dark"] .button--contact:hover,
:root[data-theme="dark"] .button--contact:focus-visible {
  background: #313b47;
  border-color: #4a5b6c;
}

:root[data-theme="dark"] .button__brand-badge--contact {
  background: rgba(232, 238, 247, 0.08);
  color: #e8eef7;
  box-shadow: inset 0 0 0 1px rgba(232, 238, 247, 0.12);
}

.button--ghost {
  background: transparent;
}

.button--small {
  padding: 0.45rem 0.75rem;
  font-size: 0.9rem;
}

.transport__hint {
  flex-basis: 100%;
  margin: 0.15rem 0 0;
  color: var(--muted-soft);
  font-size: 0.82rem;
  line-height: 1.5;
}

.toolbar {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 0.9rem;
  align-items: end;
  margin-top: 0.9rem;
  padding: 1rem 1.05rem;
}

.field,
.track-field {
  display: grid;
  gap: 0.45rem;
}

.field span,
.track-field > span {
  color: var(--muted-soft);
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.76rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.field strong {
  font-size: 0.92rem;
}

.field__hint {
  margin: 0;
  color: var(--muted);
  font-size: 0.9rem;
  line-height: 1.45;
}

.field__action {
  justify-self: start;
}

input[type="range"] {
  width: 100%;
  accent-color: var(--accent);
}

select,
input[type="text"] {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 0.85rem;
  padding: 0.76rem 0.85rem;
  background: var(--bg-soft);
  color: var(--text);
}

.toolbar__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
}

.page-controls {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: 0.45rem;
  align-items: center;
}

.page-controls select {
  min-width: 0;
}

.status-panel {
  display: grid;
  gap: 0.25rem;
  padding: 0.85rem 0.95rem;
  border: 1px solid var(--line);
  border-radius: 0.95rem;
  background: var(--bg-soft);
}

.status-panel strong {
  font-size: 0.98rem;
}

.status-panel span {
  color: var(--muted);
  font-size: 0.92rem;
}

.workspace {
  display: grid;
  grid-template-columns: 280px minmax(0, 1fr);
  gap: 0.9rem;
  margin-top: 0.9rem;
}

.workspace__sidebar {
  display: grid;
  gap: 0.9rem;
  align-self: start;
}

.project-save,
.module-rack,
.vault,
.guide {
  padding: 1rem;
}

.panel-heading {
  display: flex;
  align-items: start;
  justify-content: space-between;
  gap: 0.8rem;
}

.project-save__body,
.module-rack__body,
.vault__body,
.guide__body {
  display: grid;
  gap: 1rem;
  margin-top: 0.9rem;
}

.guide.is-collapsed .guide__body {
  display: none;
}

.project-save p,
.module-rack p,
.vault p,
.guide p {
  margin: 0;
  color: var(--muted);
  line-height: 1.6;
}

.vault__toggle {
  display: flex;
  align-items: start;
  gap: 0.65rem;
  padding: 0.8rem 0.9rem;
  border: 1px solid var(--line);
  border-radius: 0.95rem;
  background: var(--bg-soft);
  color: var(--text);
  line-height: 1.5;
}

.vault__toggle input {
  margin-top: 0.12rem;
  accent-color: var(--accent);
}

.project-save__actions,
.module-rack__actions,
.vault__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
}

.project-save__summary,
.module-rack__summary,
.vault__summary {
  padding: 0.85rem 0.95rem;
  border: 1px solid var(--line);
  border-radius: 0.95rem;
  background: var(--bg-soft);
  color: var(--muted);
  font-size: 0.92rem;
  line-height: 1.55;
}

.module-list,
.vault-list {
  display: grid;
  gap: 0.7rem;
}

.module-item,
.vault-item {
  display: grid;
  gap: 0.7rem;
  padding: 0.9rem;
  border: 1px solid var(--line);
  border-radius: 0.95rem;
  background: var(--bg-soft);
}

.module-item__meta,
.vault-item__meta {
  display: grid;
  gap: 0.3rem;
}

.module-item__meta strong,
.vault-item__meta strong {
  font-size: 0.96rem;
}

.module-item__meta span,
.vault-item__meta span {
  color: var(--muted);
  font-size: 0.88rem;
  line-height: 1.5;
}

.module-item__actions,
.vault-item__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.module-empty,
.vault-empty {
  margin: 0;
  color: var(--muted);
  line-height: 1.6;
}

.guide__list {
  margin: 0;
  padding-left: 1.1rem;
  color: var(--text);
  line-height: 1.55;
}

.guide__list li + li {
  margin-top: 0.45rem;
}

.preset-pills {
  display: grid;
  gap: 0.85rem;
}

.legend-group {
  display: grid;
  gap: 0.55rem;
}

.legend-group__label {
  color: var(--muted-soft);
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.legend-group__items {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.preset-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.45rem 0.7rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--bg-soft);
  font-size: 0.88rem;
}

.preset-pill__swatch {
  width: 0.72rem;
  height: 0.72rem;
  border-radius: 999px;
}

.sequencer {
  min-width: 0;
}

.audio-layer-list {
  display: grid;
  gap: 0.8rem;
  margin-bottom: 0.8rem;
}

.audio-layer {
  display: grid;
  gap: 0.75rem;
  padding: 0.95rem 1rem;
  border-style: dashed;
}

.audio-layer.is-muted {
  opacity: 0.68;
}

.audio-layer__meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.9rem;
}

.audio-layer__titles {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
}

.audio-layer__titles strong {
  font-size: 1rem;
}

.audio-layer__duration {
  color: var(--muted);
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.78rem;
}

.audio-layer__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.track-list {
  display: grid;
  gap: 0.8rem;
}

.track {
  border-color: color-mix(in srgb, var(--track-color, var(--accent)) 22%, var(--line));
  box-shadow: var(--track-shadow);
}

.track.is-muted {
  opacity: 0.68;
}

.track__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.9rem;
  padding: 0.95rem 1rem;
}

.track__meta {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  min-width: 0;
}

.track__titles {
  display: grid;
  gap: 0.45rem;
  min-width: 0;
}

.track__name {
  max-width: 18rem;
  padding: 0.55rem 0.75rem;
  font-size: 1rem;
  font-weight: 700;
}

.track__labels {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  align-items: center;
}

.track__badge,
.track__subtitle {
  display: inline-flex;
  align-items: center;
  border-radius: 999px;
  padding: 0.22rem 0.55rem;
  font-size: 0.8rem;
}

.track__badge {
  background: var(--badge-bg);
  color: var(--muted);
  font-family: "IBM Plex Mono", monospace;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.track__subtitle {
  background: color-mix(in srgb, var(--track-color, var(--accent)) 12%, white);
  color: color-mix(in srgb, var(--track-color, var(--accent)) 78%, black);
  font-weight: 700;
}

.track__actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 0.5rem;
}

.track__body {
  display: grid;
  gap: 0.85rem;
  padding: 0 1rem 1rem;
}

.track.is-collapsed .track__body {
  display: none;
}

.track-field__range {
  display: flex;
  align-items: center;
  gap: 0.65rem;
}

.track-field__range strong,
.track-field__static {
  min-width: 4.3rem;
  color: var(--muted);
  font-size: 0.9rem;
}

.track__controls {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(10.5rem, 1fr));
  gap: 0.85rem;
}

.track__grid-wrap {
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: 0.95rem;
  background: var(--bg-soft);
}

.track__grid {
  display: grid;
  grid-template-columns: 5.2rem repeat(var(--steps), 2.55rem);
  grid-auto-rows: 2.15rem;
  width: max-content;
}

.grid-corner,
.step-label,
.note-label,
.sequencer-cell {
  border-right: 1px solid var(--grid-line);
  border-bottom: 1px solid var(--grid-line);
}

.grid-corner,
.step-label {
  position: sticky;
  top: 0;
  z-index: 3;
  background: var(--grid-header-bg);
}

.grid-corner,
.step-label,
.note-label {
  color: var(--muted-soft);
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.76rem;
}

.grid-corner,
.step-label {
  display: grid;
  place-items: center;
}

.note-label {
  position: sticky;
  left: 0;
  z-index: 2;
  display: grid;
  place-items: center start;
  padding-left: 0.8rem;
  background: var(--grid-header-bg);
}

.step-label.is-divider,
.sequencer-cell.is-divider {
  border-left: 1px solid var(--grid-divider);
}

.sequencer-cell {
  position: relative;
  appearance: none;
  width: 100%;
  height: 100%;
  padding: 0;
  border: 0;
  background: var(--grid-cell-bg);
}

.sequencer-cell:hover,
.sequencer-cell:focus-visible {
  outline: none;
  background: color-mix(in srgb, var(--track-color, var(--accent)) 10%, var(--cell-hover-mix));
}

.sequencer-cell.is-active::after {
  content: "";
  position: absolute;
  inset: 0.24rem;
  border-radius: 0.55rem;
  background: var(--track-color, var(--accent));
  box-shadow: inset 0 0 0 1px var(--active-cell-inset);
}

.step-label.is-current,
.sequencer-cell.is-current {
  background: color-mix(in srgb, var(--track-color, var(--accent)) 10%, var(--cell-hover-mix));
}

.step-label.is-current {
  color: var(--text);
}

@media (max-width: 1120px) {
  .workspace {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 760px) {
  .app-shell {
    width: min(100%, calc(100% - 1rem));
    padding-top: 0.5rem;
  }

  .topbar,
  .toolbar,
  .guide,
  .track {
    border-radius: 0.9rem;
  }

  .track__header,
  .panel-heading,
  .audio-layer__meta {
    flex-direction: column;
    align-items: flex-start;
  }

  .track__actions {
    justify-content: flex-start;
  }

  .audio-layer__actions {
    justify-content: flex-start;
  }

  .track__name {
    max-width: none;
  }

  .track__controls {
    grid-template-columns: 1fr;
  }

  .page-controls {
    grid-template-columns: 1fr;
  }
}

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