* {
  box-sizing: border-box;
}

.hidden {
  display: none !important;
}

body {
  margin: 0;
  padding: 0;
  min-height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
  background: linear-gradient(135deg, #1a1a2e 0%, #16213e 50%, #0f3460 100%);
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

.piano-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 40px;
}

.piano-title {
  color: #fff;
  font-size: 3rem;
  font-weight: 300;
  margin-bottom: 40px;
  text-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
  letter-spacing: 0.2em;
}

.piano {
  display: flex;
  position: relative;
  background: linear-gradient(to bottom, #2c2c2c 0%, #1a1a1a 100%);
  padding: 20px 15px 10px;
  border-radius: 10px;
  box-shadow:
    0 20px 60px rgba(0, 0, 0, 0.5),
    0 0 0 6px #1a1a1a,
    inset 0 -3px 10px rgba(0, 0, 0, 0.4);
}

.key {
  position: relative;
  cursor: pointer;
  transition: all 0.08s ease;
  user-select: none;
  -webkit-tap-highlight-color: transparent;
}

.key.white {
  width: 55px;
  height: 200px;
  background: linear-gradient(to bottom, #f8f8f8 0%, #fff 10%, #f0f0f0 90%, #d8d8d8 100%);
  border: 1px solid #ccc;
  border-radius: 0 0 6px 6px;
  margin: 0 2px;
  box-shadow:
    0 4px 6px rgba(0, 0, 0, 0.3),
    inset 0 1px 0 #fff,
    inset 0 -3px 0 #c8c8c8;
  z-index: 1;
}

.key.white:hover {
  background: linear-gradient(to bottom, #fff 0%, #fff 10%, #f8f8f8 90%, #e8e8e8 100%);
}

.key.white.active,
.key.white:active {
  background: linear-gradient(to bottom, #e8e8e8 0%, #f0f0f0 10%, #e0e0e0 90%, #c8c8c8 100%);
  box-shadow:
    0 2px 3px rgba(0, 0, 0, 0.2),
    inset 0 1px 0 #f0f0f0,
    inset 0 -1px 0 #b8b8b8;
  transform: translateY(2px);
}

.key.black {
  width: 36px;
  height: 130px;
  background: linear-gradient(to bottom, #2c2c2c 0%, #1a1a1a 50%, #0d0d0d 100%);
  border-radius: 0 0 4px 4px;
  margin-left: -20px;
  margin-right: -20px;
  z-index: 2;
  box-shadow:
    0 4px 8px rgba(0, 0, 0, 0.5),
    inset 0 -2px 4px rgba(255, 255, 255, 0.05),
    inset 0 2px 4px rgba(0, 0, 0, 0.3);
}

.key.black:hover {
  background: linear-gradient(to bottom, #3a3a3a 0%, #2a2a2a 50%, #1a1a1a 100%);
}

.key.black.active,
.key.black:active {
  background: linear-gradient(to bottom, #1a1a1a 0%, #0d0d0d 50%, #000 100%);
  box-shadow:
    0 2px 4px rgba(0, 0, 0, 0.3),
    inset 0 -1px 2px rgba(255, 255, 255, 0.03);
  transform: translateY(2px);
  height: 128px;
}

.key-label {
  position: absolute;
  bottom: 10px;
  left: 50%;
  transform: translateX(-50%);
  font-size: 11px;
  font-weight: 500;
  opacity: 0.5;
  pointer-events: none;
}

.key.white .key-label {
  color: #666;
}

.key.black .key-label {
  color: #888;
  bottom: 8px;
  font-size: 10px;
}

.piano-info {
  margin-top: 30px;
  color: rgba(255, 255, 255, 0.6);
  font-size: 14px;
  text-align: center;
}

.piano-info a {
  color: #6db3f2;
  text-decoration: none;
}

.piano-info a:hover {
  text-decoration: underline;
}

/* Recording and Playback Controls */
.recording-controls,
.playback-controls {
  display: flex;
  gap: 15px;
  margin-top: 30px;
  align-items: center;
  flex-wrap: wrap;
  justify-content: center;
}

.recording-name-input {
  padding: 12px 16px;
  font-size: 16px;
  border: 2px solid rgba(255, 255, 255, 0.2);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.1);
  color: white;
  outline: none;
  transition: all 0.2s ease;
  width: 200px;
}

.recording-name-input::placeholder {
  color: rgba(255, 255, 255, 0.5);
}

.recording-name-input:focus {
  border-color: rgba(255, 255, 255, 0.4);
  background: rgba(255, 255, 255, 0.15);
}

.btn {
  padding: 12px 24px;
  font-size: 16px;
  font-weight: 500;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.2s ease;
  display: flex;
  align-items: center;
  gap: 8px;
}

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

.btn-record {
  background: linear-gradient(135deg, #e74c3c 0%, #c0392b 100%);
  color: white;
}

.btn-record:hover:not(:disabled) {
  background: linear-gradient(135deg, #ec7063 0%, #e74c3c 100%);
  transform: translateY(-1px);
}

.btn-record.recording {
  background: linear-gradient(135deg, #c0392b 0%, #922b21 100%);
  animation: pulse 1s infinite;
}

.record-icon {
  width: 12px;
  height: 12px;
  background: white;
  border-radius: 50%;
}

.btn-record.recording .record-icon {
  background: #e74c3c;
  animation: blink 0.5s infinite;
}

@keyframes pulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(231, 76, 60, 0.4); }
  50% { box-shadow: 0 0 0 10px rgba(231, 76, 60, 0); }
}

@keyframes blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.3; }
}

.btn-save {
  background: linear-gradient(135deg, #27ae60 0%, #1e8449 100%);
  color: white;
}

.btn-save:hover:not(:disabled) {
  background: linear-gradient(135deg, #2ecc71 0%, #27ae60 100%);
  transform: translateY(-1px);
}

.btn-play {
  background: linear-gradient(135deg, #3498db 0%, #2980b9 100%);
  color: white;
}

.btn-play:hover:not(:disabled) {
  background: linear-gradient(135deg, #5dade2 0%, #3498db 100%);
  transform: translateY(-1px);
}

.btn-pause {
  background: linear-gradient(135deg, #f39c12 0%, #d68910 100%);
  color: white;
}

.btn-pause:hover:not(:disabled) {
  background: linear-gradient(135deg, #f5b041 0%, #f39c12 100%);
  transform: translateY(-1px);
}

.btn-stop {
  background: linear-gradient(135deg, #95a5a6 0%, #7f8c8d 100%);
  color: white;
}

.btn-stop:hover:not(:disabled) {
  background: linear-gradient(135deg, #bdc3c7 0%, #95a5a6 100%);
  transform: translateY(-1px);
}

.recording-status,
.playback-status {
  margin-top: 20px;
  color: rgba(255, 255, 255, 0.8);
  font-size: 16px;
  text-align: center;
  min-height: 24px;
}

.recording-status a,
.playback-status a {
  color: #6db3f2;
  text-decoration: none;
  font-weight: 500;
}

.recording-status a:hover,
.playback-status a:hover {
  text-decoration: underline;
}

/* Save Success / Share URL */
.save-success {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 15px;
}

.save-success p {
  margin: 0;
}

.share-url {
  display: flex;
  gap: 10px;
  align-items: center;
  flex-wrap: wrap;
  justify-content: center;
}

.url-input {
  padding: 10px 14px;
  font-size: 14px;
  border: 2px solid rgba(255, 255, 255, 0.2);
  border-radius: 6px;
  background: rgba(255, 255, 255, 0.1);
  color: white;
  width: 300px;
  max-width: 100%;
}

.url-input:focus {
  outline: none;
  border-color: rgba(255, 255, 255, 0.4);
}

.btn-copy {
  background: linear-gradient(135deg, #9b59b6 0%, #8e44ad 100%);
  color: white;
  padding: 10px 16px;
  font-size: 14px;
}

.btn-copy:hover:not(:disabled) {
  background: linear-gradient(135deg, #a569bd 0%, #9b59b6 100%);
  transform: translateY(-1px);
}

/* Footer */
.site-footer {
  margin-top: 40px;
  padding-top: 20px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.github-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: rgba(255, 255, 255, 0.6);
  text-decoration: none;
  font-size: 14px;
  transition: color 0.2s ease;
}

.github-link:hover {
  color: rgba(255, 255, 255, 0.9);
}

.github-link svg {
  flex-shrink: 0;
}

@media (max-width: 768px) {
  .piano-title {
    font-size: 2rem;
  }

  .key.white {
    width: 40px;
    height: 150px;
  }

  .key.black {
    width: 26px;
    height: 95px;
    margin-left: -15px;
    margin-right: -15px;
  }

  .key.black.active,
  .key.black:active {
    height: 93px;
  }

  .key-label {
    font-size: 9px;
  }

  .key.black .key-label {
    font-size: 8px;
  }
}
/*
 * This is a manifest file that'll be compiled into application.css, which will include all the files
 * listed below.
 *
 * Any CSS (and SCSS, if configured) file within this directory, lib/assets/stylesheets, or any plugin's
 * vendor/assets/stylesheets directory can be referenced here using a relative path.
 *
 * You're free to add application-wide styles to this file and they'll appear at the bottom of the
 * compiled file so the styles you add here take precedence over styles defined in any other CSS
 * files in this directory. Styles in this file should be added after the last require_* statement.
 * It is generally better to create a new file per style scope.
 *


 */