* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Noto Sans JP', sans-serif;
  background: var(--color-bg-dark);
  color: var(--color-text-dark);
  overflow: hidden;
  touch-action: none;
}

:root {
  --color-bg-dark: #2d3a2e;
  --color-bg-light: #8fa888;
  --color-bg-medium: #6b7f68;
  --color-bg-darker: #4a5e47;
  --color-text-dark: #1a2a1d;
  --color-text-medium: #2d3d2a;
  --color-text-light: #3d4d3a;
  --color-text-lighter: #4a5a49;
}

body[data-theme="blue"] {
  --color-bg-dark: #2a3542;
  --color-bg-light: #7b90a8;
  --color-bg-medium: #5d6f82;
  --color-bg-darker: #3f4f5e;
  --color-text-dark: #1a2430;
  --color-text-medium: #253240;
  --color-text-light: #354555;
  --color-text-lighter: #455666;
}

body[data-theme="brown"] {
  --color-bg-dark: #3a2e2d;
  --color-bg-light: #a89088;
  --color-bg-medium: #7f6b68;
  --color-bg-darker: #5e4a47;
  --color-text-dark: #2a1a1d;
  --color-text-medium: #3d2d2a;
  --color-text-light: #4d3d3a;
  --color-text-lighter: #5a4a49;
}

body[data-theme="gray"] {
  --color-bg-dark: #2e2e2e;
  --color-bg-light: #888888;
  --color-bg-medium: #686868;
  --color-bg-darker: #474747;
  --color-text-dark: #1a1a1a;
  --color-text-medium: #2a2a2a;
  --color-text-light: #3a3a3a;
  --color-text-lighter: #4a4a4a;
}

#app {
  width: 100vw;
  height: 100vh;
  display: flex;
  flex-direction: column;
  background: var(--color-bg-light);
  box-shadow: inset 0 0 100px rgba(0,0,0,0.3);
}



.header {
  background: var(--color-bg-medium);
  padding: 16px 20px;
  border-bottom: 3px solid var(--color-text-dark);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.header-left {
  display: flex;
  align-items: center;
  gap: 16px;
}

.header h1 {
  font-size: 18px;
  font-weight: 700;
  color: var(--color-text-dark);
  text-shadow: 1px 1px 0 rgba(255,255,255,0.1);
}

.header-right {
  display: flex;
  align-items: center;
  gap: 16px;
}

.header-right .setting-group {
  margin: 0;
}

.header-right .setting-group label {
  font-size: 13px;
}

.header-right .setting-group select {
  min-width: 80px;
}



.setting-group {
  display: flex;
  align-items: center;
  gap: 8px;
}

.setting-group label {
  font-size: 14px;
  font-weight: 500;
  color: var(--color-text-dark);
}

.setting-group select {
  background: var(--color-bg-light);
  color: var(--color-text-dark);
  border: 2px solid var(--color-text-dark);
  padding: 6px 12px;
  border-radius: 4px;
  font-size: 14px;
  font-weight: 700;
  cursor: pointer;
  font-family: 'Noto Sans JP', sans-serif;
  box-shadow: inset 1px 1px 2px rgba(0,0,0,0.1);
}

.setting-group select:focus {
  outline: none;
  opacity: 0.9;
}

.time-display {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 2px;
}

.date {
  font-size: 14px;
  color: var(--color-text-light);
}

.time {
  font-size: 20px;
  color: var(--color-text-dark);
  font-weight: 700;
  letter-spacing: 1px;
}



.main-screen {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.screen {
  display: none;
  flex: 1;
  flex-direction: column;
}

.screen.active {
  display: flex;
}

.home-screen {
  padding: 20px;
  overflow-y: auto;
}

.room-list {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 8px;
  overflow-y: auto;
  max-width: 100%;
  grid-auto-flow: row;
  align-content: start;
}

@media (max-width: 768px) {
  .room-list {
    grid-template-columns: repeat(5, 1fr);
  }
}

@media (max-width: 480px) {
  .room-list {
    grid-template-columns: repeat(4, 1fr);
  }
}

.room-item {
  background: var(--color-bg-medium);
  border: 3px solid var(--color-text-dark);
  color: var(--color-text-dark);
  padding: 4px;
  border-radius: 4px;
  font-family: 'Noto Sans JP', sans-serif;
  text-align: center;
  box-shadow: inset 2px 2px 4px rgba(0,0,0,0.1);
  aspect-ratio: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
}

.room-number {
  font-size: clamp(20px, 5vw, 32px);
  font-weight: 700;
  letter-spacing: 0.3px;
}

.room-item.empty .room-number {
  font-size: 12px;
  color: var(--color-text-lighter);
  font-weight: 500;
}

.room-details {
  display: none;
}

.btn {
  background: var(--color-bg-medium);
  color: var(--color-text-dark);
  border: 3px solid var(--color-text-dark);
  padding: 24px;
  font-size: 18px;
  font-weight: 700;
  border-radius: 4px;
  cursor: pointer;
  transition: transform 0.1s, opacity 0.2s;
  font-family: 'Noto Sans JP', sans-serif;
  box-shadow: inset 2px 2px 4px rgba(0,0,0,0.1);
}

.btn:active {
  transform: scale(0.98);
  background: var(--color-bg-darker);
}

.btn.secondary {
  background: var(--color-bg-darker);
  color: var(--color-text-dark);
}

.section-title {
  font-size: 16px;
  font-weight: 500;
  margin-bottom: 16px;
  color: var(--color-text-medium);
}

.pin-screen {
  justify-content: center;
  align-items: center;
  padding: 20px;
}

.pin-display {
  font-size: 32px;
  font-weight: 700;
  letter-spacing: 8px;
  margin-bottom: 40px;
  min-height: 48px;
  color: var(--color-text-dark);
}

.keypad {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  max-width: 300px;
  width: 100%;
  margin-bottom: 20px;
}

.key-btn {
  aspect-ratio: 1;
  background: var(--color-bg-medium);
  border: 3px solid var(--color-text-dark);
  color: var(--color-text-dark);
  font-size: 24px;
  font-weight: 700;
  border-radius: 50%;
  cursor: pointer;
  transition: all 0.1s;
  font-family: 'Noto Sans JP', sans-serif;
  box-shadow: inset 2px 2px 4px rgba(0,0,0,0.1);
}

.key-btn:active {
  background: var(--color-bg-darker);
  color: var(--color-text-dark);
  transform: scale(0.95);
}

.key-btn.clear {
  background: var(--color-bg-darker);
  grid-column: 2;
}

.action-buttons {
  display: flex;
  gap: 12px;
  width: 100%;
  max-width: 300px;
}

.result-screen {
  justify-content: center;
  align-items: center;
  padding: 40px 20px;
  text-align: center;
}

.result-icon {
  font-size: 80px;
  margin-bottom: 24px;
  filter: grayscale(1) contrast(1.2);
}

.result-message {
  font-size: 24px;
  font-weight: 700;
  margin-bottom: 16px;
  color: var(--color-text-dark);
}

.result-detail {
  font-size: 16px;
  color: var(--color-text-light);
  margin-bottom: 40px;
}

.box-status {
  background: var(--color-bg-medium);
  padding: 20px;
  border-radius: 4px;
  border: 3px solid var(--color-text-dark);
  margin-bottom: 32px;
  max-width: 400px;
  width: 100%;
  box-shadow: inset 2px 2px 4px rgba(0,0,0,0.1);
}

.box-info {
  display: flex;
  justify-content: space-between;
  margin-bottom: 12px;
  font-size: 14px;
  color: var(--color-text-dark);
}

.box-info .label {
  color: var(--color-text-medium);
}

#controls {
  position: fixed;
  bottom: 20px;
  right: 20px;
  display: flex;
  gap: 8px;
  z-index: 100;
}

.control-btn {
  background: var(--color-bg-medium);
  color: var(--color-text-dark);
  border: 3px solid var(--color-text-dark);
  padding: 12px 16px;
  border-radius: 4px;
  font-size: 14px;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.2s;
  font-family: 'Noto Sans JP', sans-serif;
  box-shadow: inset 1px 1px 2px rgba(0,0,0,0.1);
}

.control-btn:active {
  transform: scale(0.95);
}

.control-btn.active {
  background: var(--color-bg-darker);
  color: var(--color-text-dark);
  border-color: var(--color-text-dark);
}

#historyBtn {
  font-size: 18px;
}

#historyPanel {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: var(--color-bg-light);
  z-index: 200;
  display: flex;
  flex-direction: column;
  transition: transform 0.3s;
  box-shadow: inset 0 0 100px rgba(0,0,0,0.3);
}

#historyPanel.hidden {
  transform: translateX(100%);
}

.history-header {
  background: var(--color-bg-medium);
  padding: 16px 20px;
  border-bottom: 3px solid var(--color-text-dark);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.history-header h2 {
  font-size: 20px;
  font-weight: 700;
  color: var(--color-text-dark);
}

#closeHistory {
  background: none;
  border: none;
  color: var(--color-text-dark);
  font-size: 24px;
  cursor: pointer;
  padding: 4px 8px;
}

#historyList {
  flex: 1;
  overflow-y: auto;
  padding: 20px;
}

.history-item {
  display: flex;
  gap: 16px;
  background: var(--color-bg-medium);
  padding: 16px;
  border-radius: 4px;
  border: 2px solid var(--color-text-dark);
  margin-bottom: 12px;
  box-shadow: inset 1px 1px 2px rgba(0,0,0,0.1);
}

.history-icon {
  font-size: 24px;
  filter: grayscale(1) contrast(1.2);
}

.history-content {
  flex: 1;
}

.history-main {
  font-weight: 700;
  margin-bottom: 4px;
  color: var(--color-text-dark);
}

.history-detail {
  font-size: 14px;
  color: var(--color-text-medium);
  margin-bottom: 4px;
}

.history-time {
  font-size: 12px;
  color: var(--color-text-light);
}