:root {
  --bg: #eef0f3;
  --panel: #f1f3f6;
  --ink: #1f2933;
  --accent: #ffffff;
  --accent-dark: #f2f2f2;
  --shadow: rgba(31, 41, 51, 0.12);
  --shadow-soft: rgba(255, 255, 255, 0.85);
  --border: rgba(31, 41, 51, 0.06);
  --neu-soft: 10px 10px 20px rgba(31, 41, 51, 0.12),
    -10px -10px 20px rgba(255, 255, 255, 0.85);
  --neu-soft-lg: 16px 16px 32px rgba(31, 41, 51, 0.12),
    -16px -16px 32px rgba(255, 255, 255, 0.85);
  --neu-inset: inset 4px 4px 8px rgba(31, 41, 51, 0.08),
    inset -4px -4px 8px rgba(255, 255, 255, 0.85);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "DM Sans", "Trebuchet MS", sans-serif;
  background: linear-gradient(180deg, #f4f5f7 0%, #eef1f4 100%);
  color: var(--ink);
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 32px 16px;
}

.app {
  width: min(1400px, 100%);
  display: grid;
  gap: 18px;
  position: relative;
}

.hero {
  background: var(--panel);
  padding: 24px 28px;
  border-radius: 24px;
  box-shadow: var(--neu-soft-lg);
  display: grid;
  gap: 12px;
}

.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.18em;
  font-size: 12px;
  margin: 0 0 12px;
  color: #6b7280;
}

h1 {
  margin: 0 0 8px;
  font-size: clamp(28px, 4vw, 40px);
  line-height: 1.1;
}

.lead {
  margin: 0;
  font-size: 16px;
  color: #5f6b76;
}

.panel {
  background: var(--panel);
  padding: 20px 22px;
  border-radius: 18px;
  display: grid;
  gap: 20px;
  box-shadow: var(--neu-soft);
  position: relative;
}

input[type="text"],
input[type="email"],
input[type="password"] {
  padding: 12px 14px;
  min-height: 44px;
  border-radius: 12px;
  border: 1px solid transparent;
  font-size: 16px;
  background: var(--panel);
  box-shadow: var(--neu-inset);
  width: 100%;
}

.panel-split {
  display: grid;
  gap: 20px;
  grid-template-columns: minmax(240px, 1fr) minmax(240px, 1fr);
  align-items: stretch;
}

.panel-col {
  display: grid;
  gap: 16px;
  grid-auto-rows: 1fr;
  justify-items: stretch;
}

.panel-col .field {
  min-height: 76px;
  align-content: start;
  min-width: 0;
}

.panel-title {
  margin: 0;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  font-size: 11px;
  color: #6b7280;
  border-bottom: 1px solid var(--border);
  padding-bottom: 10px;
}

.panel-title-row {
  display: grid;
  grid-template-columns: 1fr minmax(320px, 480px);
  gap: 16px;
  align-items: end;
}

.panel-controls {
  display: grid;
  grid-template-columns: repeat(2, minmax(160px, 1fr));
  gap: 12px;
}

.hero-auth {
  margin-top: 6px;
  display: grid;
  gap: 10px;
}

.hero-auth-row {
  display: grid;
  grid-template-columns: minmax(180px, 1fr) minmax(180px, 1fr) auto;
  gap: 12px;
  align-items: end;
}

.hero-auth-status {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.login-badge {
  border-radius: 999px;
  padding: 4px 10px;
  font-size: 12px;
  font-weight: 700;
}

.login-badge.is-logged-in {
  background: #dcfce7;
  color: #166534;
}

.login-badge.is-logged-out {
  background: #e2e8f0;
  color: #334155;
}

.auth-actions {
  display: grid;
  grid-auto-flow: column;
  gap: 8px;
}

.save-row {
  display: grid;
  grid-template-columns: minmax(200px, 1fr) minmax(220px, 1fr) auto;
  gap: 12px;
  align-items: end;
}

.save-actions {
  display: grid;
  grid-auto-flow: row;
  gap: 8px;
}

.subtle-status {
  margin: 2px 0 0;
  font-size: 13px;
  color: #6b7280;
}

.library-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
}

@media (max-width: 1024px) and (min-width: 601px) {
  .library-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

.library-card {
  border-radius: 14px;
  padding: 12px;
  background: var(--panel);
  box-shadow: var(--neu-inset);
  min-height: 160px;
}

.library-title {
  margin: 0 0 10px;
  font-size: 13px;
  font-weight: 700;
  color: #475569;
}

.library-list {
  display: grid;
  gap: 8px;
}

.library-item {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 8px;
  align-items: center;
  border-radius: 10px;
  background: #e7ebf0;
  padding: 8px 10px;
}

.library-item-meta {
  display: grid;
  gap: 3px;
}

.library-item-title {
  font-size: 13px;
  font-weight: 700;
  color: #1f2933;
}

.library-item-sub {
  font-size: 11px;
  color: #64748b;
}

.library-empty {
  font-size: 12px;
  color: #64748b;
}

.mini-load-btn {
  border: 1px solid transparent;
  background: #111316;
  color: #f8fafc;
  border-radius: 999px;
  padding: 5px 10px;
  font-size: 11px;
  font-weight: 700;
  cursor: pointer;
}

.feedback-dialog {
  border: none;
  border-radius: 14px;
  padding: 0;
  box-shadow: 0 16px 36px rgba(15, 23, 42, 0.22);
  width: min(420px, calc(100vw - 32px));
}

.feedback-dialog::backdrop {
  background: rgba(15, 23, 42, 0.38);
}

.feedback-body {
  padding: 20px;
  background: #f8fafc;
  display: grid;
  gap: 12px;
}

.feedback-title {
  margin: 0;
  font-size: 18px;
  font-weight: 700;
}

.feedback-message {
  margin: 0;
  color: #475569;
}

.panel-title-row::after {
  display: none;
}

.chord-grid {
  display: grid;
  gap: 10px;
  grid-template-columns: repeat(8, minmax(0, 1fr));
}


.chord-box {
  border-radius: 14px;
  padding: 12px;
  background: var(--panel);
  box-shadow: var(--neu-inset);
  display: grid;
  gap: 12px;
  min-width: 0;
  position: relative;
}


.box-title {
  margin: 0;
  font-weight: 700;
  font-size: 14px;
  color: #6b7280;
}

.field {
  display: grid;
  gap: 8px;
  min-width: 0;
}

.label-with-hint {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  justify-content: space-between;
  width: 100%;
}

.label-hint {
  font-size: 14px;
  color: #a0a8b2;
  letter-spacing: 0.04em;
  text-align: right;
}

.field.compact label {
  min-height: auto;
}

.field.compact select {
  min-height: 40px;
}

.field.toggle {
  grid-template-columns: 1fr auto;
  align-items: center;
}

input[type="checkbox"] {
  width: 22px;
  height: 22px;
  accent-color: var(--accent);
  cursor: pointer;
  filter: drop-shadow(2px 2px 4px rgba(31, 41, 51, 0.12));
}

label {
  font-weight: 600;
  min-height: 18px;
}

select {
  padding: 12px 14px;
  min-height: 44px;
  border-radius: 12px;
  border: 1px solid transparent;
  font-size: 16px;
  background: var(--panel);
  box-shadow: var(--neu-inset);
  width: 100%;
}

.test {
  justify-self: start;
  border: 1px solid transparent;
  background: #111316;
  border-radius: 999px;
  padding: 8px 16px;
  font-size: 14px;
  font-weight: 600;
  color: #f8fafc;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  box-shadow: 6px 6px 14px rgba(11, 13, 16, 0.35),
    -4px -4px 10px rgba(255, 255, 255, 0.08);
}

.mini-fav-btn {
  justify-self: start;
  border: 1px solid transparent;
  background: #e7ebf0;
  border-radius: 999px;
  padding: 6px 12px;
  font-size: 12px;
  font-weight: 700;
  color: #334155;
  cursor: pointer;
  transition: transform 0.18s ease, background 0.18s ease, color 0.18s ease;
}

.mini-fav-btn:hover {
  transform: translateY(-1px);
  background: #dce3eb;
}

.mini-fav-btn.is-favorite {
  background: #111316;
  color: #f8fafc;
}

.test:hover {
  transform: translateY(-1px);
  box-shadow: 8px 8px 18px rgba(11, 13, 16, 0.38),
    -6px -6px 14px rgba(255, 255, 255, 0.08);
}

.play {
  border: none;
  padding: 14px 18px;
  border-radius: 999px;
  background: #111316;
  color: #f8fafc;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
  box-shadow: 10px 10px 22px rgba(11, 13, 16, 0.38),
    -6px -6px 12px rgba(255, 255, 255, 0.08);
}

.actions {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 12px;
}

.actions.outside {
  margin-top: 4px;
}

.play.ghost {
  background: #111316;
  border: 1px solid transparent;
  color: #f8fafc;
  box-shadow: 10px 10px 22px rgba(11, 13, 16, 0.38),
    -6px -6px 12px rgba(255, 255, 255, 0.08);
}

#logoutButton,
#saveSettingButton {
  padding: 10px 14px;
  font-size: 14px;
  font-weight: 600;
  line-height: 1.2;
  box-shadow: 7px 7px 16px rgba(11, 13, 16, 0.34),
    -4px -4px 10px rgba(255, 255, 255, 0.08);
}

.play.ghost:hover {
  background: #0b0d10;
  transform: translateY(-2px) scale(1.01);
}

.play:not(.ghost):hover {
  transform: translateY(-2px) scale(1.01);
  background: #0b0d10;
}

.play:active {
  transform: translateY(1px) scale(0.99);
}

.status {
  text-align: center;
  font-weight: 600;
  color: #6b7280;
}

@media (max-width: 600px) {
  .hero,
  .panel {
    padding: 20px;
  }

  .chord-grid {
    display: flex;
    gap: 12px;
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    padding-bottom: 8px;
    -webkit-overflow-scrolling: touch;
    touch-action: pan-x;
  }

  .chord-box {
    flex: 0 0 80%;
    scroll-snap-align: start;
  }

  .panel-split {
    grid-template-columns: 1fr;
  }

  .panel-title-row {
    grid-template-columns: 1fr;
  }

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

  .hero-auth-row,
  .save-row {
    grid-template-columns: 1fr;
  }

  .auth-actions {
    grid-auto-flow: row;
  }

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

  select {
    -webkit-appearance: none;
    appearance: none;
    background-color: var(--panel);
    color: var(--ink);
    -webkit-text-fill-color: var(--ink);
    border: 1px solid var(--border);
    background-image:
      linear-gradient(45deg, transparent 50%, #6b7280 50%),
      linear-gradient(135deg, #6b7280 50%, transparent 50%);
    background-position: calc(100% - 18px) 55%, calc(100% - 12px) 55%;
    background-size: 6px 6px, 6px 6px;
    background-repeat: no-repeat;
    padding-right: 36px;
  }

  input[type="checkbox"] {
    accent-color: #111316;
  }

  .actions.outside {
    position: sticky;
    bottom: 12px;
    z-index: 5;
  }

  .panel-title-row::after,
  .chord-grid::before,
  .chord-box::after {
    display: none;
  }
}

@keyframes pulse {
  0% {
    box-shadow: 0 6px 14px rgba(120, 224, 143, 0.35), 0 0 0 rgba(120, 224, 143, 0);
  }
  50% {
    box-shadow: 0 18px 34px rgba(120, 224, 143, 0.7), 0 0 26px rgba(120, 224, 143, 0.5);
  }
  100% {
    box-shadow: 0 6px 14px rgba(120, 224, 143, 0.35), 0 0 0 rgba(120, 224, 143, 0);
  }
}

.play.is-playing {
  animation: pulse 0.9s ease infinite;
}