:root {
  --bg-color: #0f172a;
  --card-bg: #1e293b;
  --primary: #6366f1;
  --primary-hover: #4f46e5;
  --secondary: #334155;
  --secondary-hover: #475569;
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --border-color: #334155;
  --focus-ring: rgba(99, 102, 241, 0.5);
  --success: #22c55e;
}

* {
  box-sizing: border-box;
}

body {
  font-family: 'Inter', sans-serif;
  background-color: var(--bg-color);
  color: var(--text-main);
  margin: 0;
  padding: 0;
  min-height: 100vh;
  display: flex;
  justify-content: center;
}

.app-container {
  width: 100%;
  max-width: 480px;
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.app-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.app-header h1 {
  margin: 0;
  font-size: 1.5rem;
  font-weight: 700;
  background: linear-gradient(135deg, #a5b4fc, #6366f1);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.btn-icon {
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-size: 1.5rem;
  cursor: pointer;
  transition: color 0.2s, transform 0.3s;
}
.btn-icon:hover {
  color: var(--text-main);
  transform: rotate(90deg);
}

.main-content {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.card {
  background-color: var(--card-bg);
  padding: 24px;
  border-radius: 16px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
}

.timer-card {
  text-align: center;
}

.time-display {
  font-size: 5rem;
  font-weight: 700;
  letter-spacing: -2px;
  margin-bottom: 20px;
  color: var(--text-main);
  text-shadow: 0 0 20px rgba(99, 102, 241, 0.2);
}

.mode-tabs {
  display: flex;
  gap: 8px;
  margin-bottom: 20px;
  background-color: var(--bg-color);
  padding: 4px;
  border-radius: 12px;
}

.mode-tab {
  flex: 1;
  padding: 10px;
  border: none;
  border-radius: 8px;
  background: transparent;
  color: var(--text-muted);
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
}

.mode-tab.active {
  background-color: var(--secondary);
  color: var(--text-main);
  box-shadow: 0 2px 8px rgba(0,0,0,0.2);
}

.time-buttons {
  display: flex;
  gap: 8px;
  margin-bottom: 20px;
  justify-content: center;
}

.btn-time {
  padding: 8px 14px;
  border: 1px solid var(--border-color);
  background-color: transparent;
  color: var(--text-main);
  border-radius: 20px;
  font-size: 0.9rem;
  cursor: pointer;
  transition: all 0.2s;
}

.btn-time:hover {
  background-color: var(--secondary);
}

.btn-debug {
  border-color: #f59e0b;
  color: #f59e0b;
}

.btn-debug:hover {
  background-color: rgba(245, 158, 11, 0.1);
}

.timer-controls {
  display: flex;
  gap: 12px;
}

.btn {
  flex: 1;
  padding: 14px;
  border: none;
  border-radius: 12px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
}

.btn:active {
  transform: scale(0.96);
}

.btn-primary {
  background-color: var(--primary);
  color: white;
  box-shadow: 0 4px 12px rgba(99, 102, 241, 0.3);
}

.btn-primary:hover {
  background-color: var(--primary-hover);
}

.btn-secondary {
  background-color: var(--secondary);
  color: var(--text-main);
}

.btn-secondary:hover {
  background-color: var(--secondary-hover);
}

.btn-small {
  padding: 8px 12px;
  border-radius: 8px;
  border: none;
  background-color: var(--secondary);
  color: var(--text-main);
  cursor: pointer;
  font-size: 0.85rem;
  transition: background 0.2s;
}
.btn-small:hover {
  background-color: var(--secondary-hover);
}

.form-group {
  margin-bottom: 16px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

label {
  font-size: 0.85rem;
  color: var(--text-muted);
  font-weight: 500;
}

input[type="text"], input[type="datetime-local"], select, textarea {
  width: 100%;
  padding: 12px;
  border-radius: 10px;
  border: 1px solid var(--border-color);
  background-color: var(--bg-color);
  color: var(--text-main);
  font-family: inherit;
  font-size: 0.95rem;
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
}

input[type="text"]:focus, input[type="datetime-local"]:focus, select:focus, textarea:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--focus-ring);
}

textarea {
  resize: vertical;
}

.manual-record-group {
  margin-top: 24px;
  padding-top: 20px;
  border-top: 1px solid var(--border-color);
}

.checkbox-label {
  display: flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  font-weight: 500;
  margin-bottom: 12px;
}

.manual-time-inputs {
  background-color: var(--bg-color);
  padding: 12px;
  border-radius: 8px;
  transition: opacity 0.3s;
}

.manual-time-inputs.disabled {
  opacity: 0.4;
  pointer-events: none;
}

.manual-time-inputs input[type="datetime-local"] {
  width: 100%;
  padding: 8px 12px;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  background-color: var(--card-bg);
  color: var(--text-main);
}

.btn-primary.w-100 {
  width: 100%;
}

.input-with-button {
  display: flex;
  gap: 8px;
}
.input-with-button select {
  flex: 1;
}

.tags-container {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.tag-btn {
  padding: 6px 14px;
  border-radius: 20px;
  border: 1px solid var(--border-color);
  background: transparent;
  color: var(--text-muted);
  font-size: 0.85rem;
  cursor: pointer;
  transition: all 0.2s;
}
.tag-btn.selected {
  background-color: var(--primary);
  color: white;
  border-color: var(--primary);
}

.rating-group {
  display: flex;
  gap: 8px;
  justify-content: space-between;
}
.btn-rating {
  flex: 1;
  padding: 10px 0;
  border-radius: 8px;
  border: 1px solid var(--border-color);
  background: var(--bg-color);
  color: var(--text-main);
  cursor: pointer;
  font-weight: 600;
  transition: all 0.2s;
}
.btn-rating.selected {
  background-color: var(--primary);
  border-color: var(--primary);
}

.mt-2 { margin-top: 8px; }
.mt-3 { margin-top: 16px; }
.w-100 { width: 100%; }

.logs-card h3 {
  margin: 0 0 16px 0;
  font-size: 1.1rem;
}

.log-list {
  list-style: none;
  padding: 0;
  margin: 0;
  max-height: 300px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.log-list li {
  background-color: var(--bg-color);
  padding: 16px;
  border-radius: 12px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  border: 1px solid var(--border-color);
}

.log-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
}
.log-task {
  font-weight: 600;
  font-size: 1rem;
  color: var(--primary);
}
.log-time {
  font-size: 0.8rem;
  color: var(--text-muted);
}
.log-details {
  font-size: 0.85rem;
  color: #cbd5e1;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}
.log-memo {
  font-size: 0.85rem;
  color: var(--text-muted);
  font-style: italic;
  margin-top: 4px;
}
.loading-text {
  text-align: center;
  color: var(--text-muted);
  font-size: 0.9rem;
  padding: 20px 0 !important;
  border: none !important;
  background: transparent !important;
}