* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
body {
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  background: #f5f5f5;
  min-height: 100vh;
  color: #333;
  overflow-x: hidden;
}
.container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 15px;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Header */
.header {
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  border-radius: 15px;
  padding: 20px 25px;
  margin-bottom: 20px;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: #030000;
}
.header-left {
  display: flex;
  align-items: center;
  gap: 15px;
}
.logo {
  width: auto;
  height: 80px;
  background: #e80014;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-weight: bold;
  font-size: 1.1rem;
}
.system-info h1 {
  font-size: 1.8rem;
  font-weight: 700;
  color: #333;
  margin-bottom: 3px;
}
.system-info p {
  color: #4a5568;
  font-size: 1rem;
}
.datetime-display {
  text-align: right;
  display: flex;
  align-items: center;
  gap: 15px;
}
.datetime-info {
  text-align: right;
}
.current-time {
  font-size: 1.8rem;
  font-weight: 600;
  color: #333;
  font-family: "Courier New", monospace;
}
.current-date {
  font-size: 1rem;
  color: #4a5568;
  margin-top: 3px;
}

/* Status Summary */
.status-summary {
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  border-radius: 15px;
  padding: 20px;
  margin-bottom: 20px;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 15px;
}
.summary-card {
  text-align: center;
  padding: 15px;
  border-radius: 12px;
  background: #ffffff;
  border: 1px solid #e2e8f0;
  transition: all 0.3s ease;
}
.summary-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.1);
}
.summary-card.available {
  border-color: #70AD47;
  background: #f0fff4;
}
.summary-card.occupied {
  border-color: #e80014;
  background: #fff5f5;
}
.summary-card h3 {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 8px;
}
.summary-card.available h3 {
  color: #70AD47;
}
.summary-card.occupied h3 {
  color: #e80014;
}
.summary-card p {
  color: #4a5568;
  font-weight: 500;
  font-size: 0.9rem;
}

/* Main Content */
.main-content {
  flex: 1;
  background: white;
  border: 1px solid #e2e8f0;
  border-radius: 15px;
  padding: 25px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
  display: flex;
  flex-direction: column;
  min-height: 0;
}
.content-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
  padding-bottom: 15px;
  border-bottom: 2px solid #333;
}
.content-title {
  font-size: 1.6rem;
  font-weight: 600;
  color: #333;
}
.auto-refresh {
  display: flex;
  align-items: center;
  gap: 8px;
  color: #666;
  font-size: 0.85rem;
}

/* Theme Toggle Button */
.theme-toggle {
  background: #333;
  border: 2px solid #e2e8f0;
  border-radius: 25px;
  padding: 8px;
  cursor: pointer;
  transition: all 0.3s ease;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  flex-shrink: 0;
}
.theme-toggle:hover {
  background: #555;
  transform: scale(1.05);
}
.theme-toggle svg {
  width: 18px;
  height: 18px;
  color: #ffffff;
  transition: all 0.3s ease;
}
.refresh-indicator {
  width: 8px;
  height: 8px;
  background: #70AD47;
  border-radius: 50%;
  animation: pulse 2s infinite;
}
@keyframes pulse {
0%, 100% {
    transform: scale(1);
    opacity: 1;
}
50% {
    transform: scale(1.1);
    opacity: 0.8;
}
}
/* Filter Bar */
.filter-bar {
  display: flex;
  gap: 10px;
  margin-bottom: 20px;
  align-items: center;
}
.filter-button {
  padding: 6px 14px;
  border: 1px solid #e2e8f0;
  border-radius: 20px;
  background: white;
  color: #666;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.3s ease;
  font-size: 0.85rem;
}
.filter-button:hover {
  border-color: #cbd5e0;
  background: #f8f9fa;
}
.filter-button.active {
  border-color: #333;
  background: #333;
  color: white;
}
.filter-button.available.active {
  border-color: #70AD47;
  background: #70AD47;
}
.filter-button.occupied.active {
  border-color: #e80014;
  background: #e80014;
}

/* Rooms Grid - 4x4 layout */
.rooms-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 15px;
  animation: fadeInUp 0.6s ease-out;
  flex: 1;
  min-height: 0;
}
@keyframes fadeInUp {
from {
    opacity: 0;
    transform: translateY(20px);
}
to {
    opacity: 1;
    transform: translateY(0);
}
}
/* Room Card - Ultra Compact Design */
.room-card {
  background: white;
  border-radius: 10px;
  padding: 10px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
  border: 1px solid #e2e8f0;
  transition: all 0.3s ease;
  cursor: pointer;
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  min-height: 120px;
}
.room-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.1);
  border-color: #cbd5e0;
}
.room-card.available {
  border-color: #70AD47;
  background: #ffffff;
}
.room-card.occupied {
  border-color: #e80014;
  background: #ffffff;
}
.room-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 6px;
}
.room-number {
  font-size: 1.1rem;
  font-weight: 700;
  color: #333;
}
.room-status {
  display: flex;
  align-items: center;
  gap: 5px;
  padding: 3px 8px;
  border-radius: 12px;
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.3px;
}
.room-status.available {
  background: #f0fff4;
  color: #22543d;
  border: 1px solid #70AD47;
}
.room-status.occupied {
  background: #fff5f5;
  color: #742a2a;
  border: 1px solid #e80014;
}
.status-dot {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  animation: pulse 2s infinite;
}
.status-dot.available {
  background: #70AD47;
}
.status-dot.occupied {
  background: #e80014;
}

/* Room Details - Ultra Compact */
.room-details {
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}
.session-info-container {
  background: #fff5f5;
  border-radius: 6px;
  padding: 6px;
  margin-top: auto;
  border-left: 3px solid #e80014;
}
.session-info-container.available {
  background: #f0fff4;
  border-left-color: #70AD47;
}
.session-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 3px;
}
.session-info {
  font-weight: 600;
  color: #742a2a;
  font-size: 0.7rem;
}
.session-info-container.available .session-info {
  color: #22543d;
}
.session-booking-id {
  font-size: 0.6rem;
  color: #ff8c00;
  font-family: "Courier New", monospace;
  font-weight: 600;
}
.session-time {
  font-size: 0.65rem;
  color: #a0162a;
  margin-bottom: 1px;
}
.session-info-container.available .session-time {
  color: #2d5016;
}
.no-bookings {
  text-align: center;
  color: #a0aec0;
  font-style: italic;
  margin-top: auto;
  font-size: 0.75rem;
  padding: 8px;
}

/* Dark mode styles */
body.dark-mode {
  background: #1a2332;
  color: #ffffff;
}
body.dark-mode .header {
  background: #2a3441;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
}
body.dark-mode .system-info h1,
body.dark-mode .current-time {
  color: #ffffff;
}
body.dark-mode .current-date,
body.dark-mode .system-info p {
  color: #b0bec5;
}
body.dark-mode .status-summary {
  background: #2a3441;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
}
body.dark-mode .summary-card {
  background: #1a2332;
  border: 1px solid #3d4a5c;
}
body.dark-mode .summary-card.available {
  border-color: #70AD47;
  background: #1a2332;
}
body.dark-mode .summary-card.occupied {
  border-color: #e80014;
  background: #1a2332;
}
body.dark-mode .summary-card p {
  color: #b0bec5;
}
body.dark-mode .main-content {
  background: #2a3441;
  border: 1px solid #3d4a5c;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
}
body.dark-mode .content-title {
  color: #ffffff;
}
body.dark-mode .auto-refresh {
  color: #b0bec5;
}
body.dark-mode .filter-button {
  background: #1a2332;
  border: 1px solid #3d4a5c;
  color: #b0bec5;
}
body.dark-mode .filter-button:hover {
  background: #3d4a5c;
  border-color: #4a5568;
}
body.dark-mode .filter-button.active {
  background: #ffffff;
  border-color: #ffffff;
  color: #1a2332;
}
body.dark-mode .filter-button.available.active {
  background: #70AD47;
  border-color: #70AD47;
  color: #ffffff;
}
body.dark-mode .filter-button.occupied.active {
  background: #e80014;
  border-color: #e80014;
  color: #ffffff;
}
body.dark-mode .room-card {
  background: #1a2332;
  border: 1px solid #3d4a5c;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}
body.dark-mode .room-card:hover {
  border-color: #4a5568;
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.4);
}
body.dark-mode .room-card.available {
  border-color: #70AD47;
}
body.dark-mode .room-card.occupied {
  border-color: #e80014;
}
body.dark-mode h3,
body.dark-mode .room-number {
  color: #ffffff;
}
body.dark-mode .room-status.available {
  background: #1a2332;
  color: #70AD47;
  border: 1px solid #70AD47;
}
body.dark-mode .room-status.occupied {
  background: #1a2332;
  color: #e80014;
  border: 1px solid #e80014;
}
body.dark-mode .capacity-info {
  color: #b0bec5;
}
body.dark-mode .detail-icon {
  color: #b0bec5;
}
body.dark-mode .session-info-container {
  background: #1a2332;
  border-left-color: #e80014;
}
body.dark-mode .session-info-container.available {
  background: #1a2332;
  border-left-color: #70AD47;
}
body.dark-mode .session-info {
  color: #e80014;
}
body.dark-mode .session-info-container.available .session-info {
  color: #70AD47;
}
body.dark-mode .session-time {
  color: #ff6b6b;
}
body.dark-mode .session-info-container.available .session-time {
  color: #90c695;
}
body.dark-mode .session-booking-id {
  color: #ffa500;
}
body.dark-mode .no-bookings {
  color: #666;
}
body.dark-mode .theme-toggle {
  background: #f5f5f5;
  border: 2px solid #3d4a5c;
}
body.dark-mode .theme-toggle:hover {
  background: #e2e8f0;
}
body.dark-mode .theme-toggle svg {
  color: #333;
}
@media (max-width: 1200px) {
.rooms-grid {
    grid-template-columns: repeat(3, 1fr);
}
}
@media (max-width: 768px) {
.container {
    padding: 10px;
}
.header {
    flex-direction: column;
    gap: 15px;
    text-align: center;
    padding: 15px;
}
.header-left {
    flex-direction: column;
    gap: 10px;
}
.system-info h1 {
    font-size: 1.5rem;
}
.current-time {
    font-size: 1.5rem;
}
.status-summary {
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
    padding: 15px;
}
.content-header {
    flex-direction: column;
    gap: 10px;
    align-items: flex-start;
}
.filter-bar {
    flex-wrap: wrap;
}
.rooms-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
}
.room-card {
    min-height: 100px;
    padding: 8px;
}
}
@media (max-width: 480px) {
.status-summary {
    grid-template-columns: 1fr;
}
.rooms-grid {
    grid-template-columns: 1fr;
}
.summary-card h3 {
    font-size: 1.8rem;
}
}