:root {
  --primary-color: #ff8c42; /* 따뜻한 느낌의 오렌지 포인트 */
  --primary-hover: #ff751f;
  --bg-color: #f8fafc;
  --surface-color: #ffffff;
  --text-main: #1e293b;
  --text-muted: #64748b;
  --border-color: #e2e8f0;
  --shadow-sm: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 10px 15px -3px rgba(0, 0, 0, 0.05);
  --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.05), 0 8px 10px -6px rgba(0, 0, 0, 0.01);
  --radius-xl: 20px;
  --radius-md: 12px;
  --bg-image: none;
  --bg-overlay: transparent;
  --surface-blur: 0px;
  --glass-border: none;
}

/* Theme variables */
[data-theme="dark"] {
  --bg-color: #121212;
  --surface-color: #1e1e1e;
  --text-main: #e2e8f0; /* 은은한 화이트 */
  --text-muted: #94a3b8;
  --border-color: #334155;
  --primary-color: #fef08a; /* 파스텔톤 노란색 */
  --primary-hover: #fde047;
}
[data-theme="alps"] {
  --bg-color: #e0f2fe;
  --bg-image: url('../assets/alps.jpg');
  --bg-overlay: transparent;
  --surface-color: rgba(255, 255, 255, 0.55);
  --surface-blur: 16px;
  --glass-border: 1px solid rgba(255, 255, 255, 0.4);
  --text-main: #0c4a6e;
  --text-muted: #0c4a6e;
  --border-color: rgba(186, 230, 253, 0.5);
  --primary-color: #0ea5e9;
  --primary-hover: #0284c7;
}
[data-theme="positano"] {
  --bg-color: #fffbeb;
  --bg-image: url('../assets/positano.jpg');
  --bg-overlay: transparent;
  --surface-color: rgba(255, 255, 255, 0.55);
  --surface-blur: 16px;
  --glass-border: 1px solid rgba(255, 255, 255, 0.4);
  --text-main: #115e59;
  --text-muted: #0d9488;
  --border-color: rgba(253, 224, 71, 0.5);
  --primary-color: #f59e0b;
  --primary-hover: #d97706;
}

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

body {
  font-family: 'Pretendard', -apple-system, system-ui, sans-serif;
  background-color: var(--bg-color);
  background-image: var(--bg-image);
  background-size: cover;
  background-position: center;
  background-attachment: fixed;
  color: var(--text-main);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
}

body::before {
  content: '';
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background-color: var(--bg-overlay);
  z-index: -1;
  pointer-events: none;
}

.app-container {
  max-width: 600px;
  margin: 0 auto;
  min-height: 100vh;
  background: var(--surface-color);
  backdrop-filter: blur(var(--surface-blur));
  -webkit-backdrop-filter: blur(var(--surface-blur));
  border-left: var(--glass-border);
  border-right: var(--glass-border);
  box-shadow: var(--shadow-xl);
  padding: 2rem 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 2rem;
}
.app-container.is-rooms-page {
  max-width: 1200px; /* 3 columns on desktop */
  margin: 2rem auto;
  min-height: calc(100vh - 4rem);
  border: var(--glass-border);
  border-radius: var(--radius-xl);
}

/* Header */
header {
  text-align: center;
  margin-top: 1rem;
}
.header-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.5rem;
}
.q-mark {
  color: var(--primary-color);
  font-size: 3.5rem;
  font-weight: 900;
  vertical-align: middle;
  margin-left: 0.1rem;
  display: inline-block;
  line-height: 0.8;
}
.theme-switcher {
  display: flex;
  gap: 0.5rem;
}
.theme-btn {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  cursor: pointer;
  transition: transform 0.2s;
}
.theme-btn:hover {
  transform: scale(1.15);
}

.logo {
  font-size: 2.2rem;
  font-weight: 800;
  letter-spacing: -0.5px;
  color: var(--text-main);
  white-space: nowrap;
}
.logo .dot {
  color: var(--primary-color);
}
.subtitle {
  font-size: 0.95rem;
  color: var(--text-muted);
  margin-top: 0.3rem;
}

/* Hero Image */
.hero-section {
  display: flex;
  justify-content: center;
}
.image-wrapper {
  width: 100%;
  max-width: 320px;
  aspect-ratio: 1 / 1;
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  background: #f1f5f9;
}
.hero-image {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

/* Form Section */
.form-section {
  background: var(--surface-color);
  border-radius: var(--radius-xl);
  padding: 1.5rem;
  box-shadow: var(--shadow-lg);
  border: 1px solid rgba(0,0,0,0.03);
  display: flex;
  flex-direction: column;
  gap: 1.2rem;
  margin-top: -1rem;
}

.long-search-input {
  position: relative;
  width: 100%;
}
.long-search-input .search-icon {
  position: absolute;
  left: 1.2rem;
  top: 50%;
  transform: translateY(-50%);
  width: 20px;
  height: 20px;
  color: var(--text-muted);
}
.long-search-input input {
  width: 100%;
  padding: 1.2rem 1rem 1.2rem 3rem;
  font-size: 1.05rem;
  border: 2px solid var(--border-color);
  border-radius: 16px;
  background: var(--bg-color);
  color: var(--text-main);
  transition: all 0.3s ease;
  font-family: inherit;
}
.long-search-input input:focus {
  outline: none;
  border-color: var(--primary-color);
  background: var(--surface-color);
  box-shadow: 0 0 0 4px rgba(255, 140, 66, 0.15);
}

.form-row {
  display: flex;
  gap: 1rem;
}

.dropdown-wrapper {
  flex: 1;
  position: relative;
}
.dropdown-btn {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 1.2rem;
  background: var(--bg-color);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-main);
  cursor: pointer;
  transition: background 0.2s;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.dropdown-btn:hover, .dropdown-btn.active {
  background: var(--bg-color);
}
.dropdown-btn.filled {
  border-color: var(--primary-color);
  background: rgba(255, 140, 66, 0.05);
  color: var(--primary-hover);
}
.dropdown-menu {
  position: absolute;
  top: calc(100% + 8px);
  left: 0;
  width: 100%;
  min-width: 250px;
  background: var(--surface-color);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  padding: 1rem;
  z-index: 100;
  max-height: 300px;
  overflow-y: auto;
  backdrop-filter: blur(10px);
}
.dropdown-menu.hidden {
  display: none;
}


.memo-input {
  padding: 1rem 1.2rem 1rem 2.8rem;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  font-size: 0.95rem;
  color: var(--text-main);
  font-family: inherit;
  background: var(--bg-color);
  transition: all 0.2s;
}
.memo-icon {
  position: absolute;
  left: 1rem;
  top: 50%;
  transform: translateY(-50%);
  width: 18px;
  height: 18px;
  color: var(--text-muted);
}
.memo-input:focus {
  outline: none;
  border-color: var(--primary-color);
  background: var(--surface-color);
}

.save-btn {
  width: 100%;
  padding: 1.1rem;
  margin-top: 1rem;
  background: var(--primary-color);
  color: white;
  border: none;
  border-radius: 14px;
  font-size: 1.05rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: 0 4px 12px rgba(255, 140, 66, 0.3);
}
.save-btn:hover {
  background: var(--primary-hover);
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(255, 140, 66, 0.4);
}
.save-btn:active {
  transform: translateY(0);
}

/* Room Section */
.rooms-section {
  padding-bottom: 2rem;
}
.section-title {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 1rem;
  color: var(--text-main);
}

.room-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(130px, 1fr));
  gap: 0.8rem;
}

.room-btn {
  background: var(--surface-color);
  border: 1px solid var(--border-color);
  padding: 0.9rem;
  border-radius: 12px;
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-main);
  cursor: pointer;
  transition: all 0.2s ease;
  box-shadow: var(--shadow-sm);
  display: flex;
  align-items: center;
  justify-content: center;
}
.room-btn:hover {
  border-color: #cbd5e1;
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.room-btn.selected {
  background: var(--primary-color);
  color: #fff;
  border-color: var(--primary-color);
  box-shadow: 0 4px 12px rgba(255, 140, 66, 0.2);
}

.room-btn.add-btn {
  background: var(--bg-color);
  border: 2px dashed var(--border-color);
  color: var(--text-muted);
}
.room-btn.add-btn:hover {
  background: var(--surface-color);
  border-color: var(--text-muted);
}

/* Search Results UI */
.search-results {
  margin-top: 1rem;
  border-top: 1px solid var(--border-color);
  padding-top: 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.8rem;
}
.search-results.hidden {
  display: none;
}
.result-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem;
  background: var(--bg-color);
  border-radius: 10px;
  border: 1px solid var(--border-color);
}
.result-info h4 {
  font-size: 1.05rem;
  color: var(--text-main);
  margin-bottom: 0.2rem;
}
.result-badge {
  display: inline-block;
  background: rgba(255, 140, 66, 0.1);
  color: var(--primary-hover);
  padding: 0.2rem 0.6rem;
  border-radius: 6px;
  font-size: 0.8rem;
  font-weight: 600;
}
.result-memo {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-top: 0.3rem;
}
.result-delete {
  background: none;
  border: none;
  color: #ef4444;
  cursor: pointer;
  font-size: 1.2rem;
  padding: 0.5rem;
}

/* Toast */
.toast-container {
  position: fixed;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  gap: 10px;
  z-index: 1000;
}
.toast {
  background: #1e293b;
  color: white;
  padding: 0.8rem 1.5rem;
  border-radius: 50px;
  font-size: 0.95rem;
  font-weight: 500;
  box-shadow: 0 10px 20px rgba(0,0,0,0.15);
  animation: slideUp 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275) forwards;
}
@keyframes slideUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

@media (max-width: 480px) {
  .app-container {
    padding: 1.5rem 1rem;
    box-shadow: none;
    border-radius: 0;
  }
  .form-row {
    flex-direction: column;
  }
}