/* ----------------- Variables & Reset ----------------- */
:root {
  --font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    Helvetica, Arial, sans-serif;
  --bg-primary: #f8f9fa; /* Light background */
  --bg-surface: #ffffff; /* Light card/modal background */
  --text-primary: #212529; /* Dark text */
  --text-secondary: #6c757d;
  --color-primary: #0d6efd;
  --color-primary-dark: #0b5ed7;
  --border-color: #dee2e6;
  --border-color-light: #f1f1f1;
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
  --radius-sm: 6px;
  --radius-md: 8px;
  --radius-lg: 12px;

  /* Toast colors */
  --color-success: #198754;
  --color-error: #dc3545;
  --color-info: #0dcaf0;
}

/* --- Dark Mode Variables --- */
body.dark-mode {
  --bg-primary: #1a1a1a;
  --bg-surface: #2c2c2c;
  --text-primary: #f8f9fa;
  --text-secondary: #adb5bd;
  --border-color: #495057;
  --border-color-light: #3a3a3a;
  --shadow-sm: none;
  --shadow-md: none;
}

body {
  font-family: var(--font-sans);
  margin: 0;
  background: var(--bg-primary);
  color: var(--text-primary);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden; /* <-- FIX: Prevents horizontal scrollbar jitter */
}

/* ----------------- Header ----------------- */
header.new-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: #343a40;
  color: #fff;
  padding: 1rem 1.5rem;
  border-bottom: 1px solid #495057;
  box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}
.header-left {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}
.header-logo {
  width: 24px;
  height: 24px;
  color: var(--color-primary);
}
.header-title {
  font-size: 1.25rem;
  font-weight: 600;
}
.header-right {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

/* --- Theme Toggle Switch --- */
.theme-switch-wrapper {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}
.theme-label {
  font-size: 0.95rem;
  font-weight: 500;
  color: #f8f9fa;
}
.theme-switch {
  position: relative;
  display: inline-block;
  width: 50px;
  height: 28px;
}
.theme-switch input {
  opacity: 0;
  width: 0;
  height: 0;
}
.slider {
  position: absolute;
  cursor: pointer;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: #ccc;
  transition: .4s;
}
.slider:before {
  position: absolute;
  content: "";
  height: 20px;
  width: 20px;
  left: 4px;
  bottom: 4px;
  background-color: white;
  transition: .4s;
}
input:checked + .slider {
  background-color: var(--color-primary);
}
input:checked + .slider:before {
  transform: translateX(22px);
}
.slider.round {
  border-radius: 34px;
}
.slider.round:before {
  border-radius: 50%;
}

/* ----------------- Layout ----------------- */
main {
  padding: 1.5rem;
  max-width: 1400px;
  margin: 0 auto;
}

/* ----------------- Controls ----------------- */
.controls {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.7rem;
  margin-bottom: 1.2rem;
  justify-content: flex-start;
}

/* Simplified Date Controls */
.date-controls {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.date-controls button {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: background-color 0.2s;
  color: var(--text-primary);
}
.date-controls button:hover {
  background: var(--bg-primary);
}
.date-controls input[type="date"] {
  padding: 8px 10px;
  border: 1px solid var(--border-color);
  font-family: var(--font-sans);
  border-radius: var(--radius-sm);
  background-color: var(--bg-surface);
  color: var(--text-primary);
}

/* ----------------- Button Styles ----------------- */
.btn-primary {
  background: var(--color-primary);
  border: none;
  color: #fff;
  padding: 10px 18px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-weight: 600;
  font-size: 1rem;
  transition: background-color 0.2s ease, transform 0.1s ease;
  box-shadow: var(--shadow-sm);
}
.btn-primary:hover {
  background: var(--color-primary-dark);
  transform: translateY(-1px);
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.1);
}
.btn-primary:active {
  transform: translateY(0);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.08);
}

.btn-secondary {
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  padding: 10px 18px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-weight: 500;
  font-size: 1rem;
  transition: background-color 0.2s ease, border-color 0.2s ease, transform 0.1s ease;
}
.btn-secondary:hover {
  background: var(--border-color);
  border-color: var(--text-secondary);
  transform: translateY(-1px);
}
.btn-secondary:active {
  transform: translateY(0);
}

/* ----------------- Modal Styles ----------------- */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.6);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  animation: fadeIn 0.3s ease;
}
.modal-content {
  background: var(--bg-surface);
  padding: 1.5rem 2rem;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  width: 100%;
  max-width: 450px;
  border: 1px solid var(--border-color);
}
.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1rem;
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 0.5rem;
}
.modal-header h2 {
  margin: 0;
}
.modal-close-btn {
  background: none;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
  color: var(--text-secondary);
}

.booking-form {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}
.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}
.form-group-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}
.form-group label {
  font-weight: 500;
  font-size: 0.9rem;
  color: var(--text-primary);
}
.form-group input,
.form-group select {
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-color);
  font-size: 1rem;
  font-family: var(--font-sans);
  width: 100%;
  box-sizing: border-box; 
  background-color: var(--bg-surface);
  color: var(--text-primary);
}
.form-group input:focus,
.form-group select:focus {
  outline: 2px solid var(--color-primary);
  border-color: var(--color-primary);
}

.form-group-checkbox {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 8px;
  background: var(--bg-primary);
  border-radius: var(--radius-sm);
}
.form-group-checkbox input {
  width: auto; 
}
.form-group-checkbox label {
  font-weight: 500;
  font-size: 0.9rem;
  cursor: pointer;
}

.form-actions {
  display: flex;
  justify-content: flex-end;
  gap: 0.5rem;
  margin-top: 1rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border-color-light);
}

/* --- Help Modal Styles --- */
.modal-content.help-modal {
  max-width: 550px;
}
.help-modal p {
  font-size: 1.1rem;
  margin-top: 0;
}
.help-modal ul {
  padding-left: 20px;
  line-height: 1.6;
  font-size: 0.95rem;
}
.help-modal li {
  margin-bottom: 0.75rem;
}
.help-modal li strong {
  color: var(--color-primary);
}
.help-actions {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 1rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border-color-light);
}
.help-actions .form-group-checkbox {
  padding: 0;
  background: none;
}


/* ----------------- Schedule ----------------- */
.schedule-table {
  background: var(--bg-surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  padding: 15px 20px 25px;
  margin-bottom: 35px;
  overflow-x: auto;
  border: 1px solid var(--border-color);
}
.date-header {
  text-align: left;
  font-weight: 700;
  font-size: 1.5rem;
  margin: 0.5rem 0 1rem 0;
  color: var(--text-primary);
}
.time-header {
  display: grid;
  grid-template-columns: 150px repeat(24, 1fr);
  font-size: 0.8rem;
  text-align: center;
  border-bottom: 1px solid var(--border-color);
  color: var(--text-secondary);
  font-weight: 500;
}
.time-header div {
  padding: 4px 0;
  border-left: 1px solid var(--border-color-light);
}
.timeline-row {
  display: grid;
  grid-template-columns: 150px 1fr;
  align-items: center;
  border-bottom: 1px solid var(--border-color-light);
  min-height: 50px;
}
.person-name {
  padding-left: 10px;
  font-weight: 500;
  color: var(--text-primary);
}
.timeline-wrapper {
  position: relative;
  overflow: hidden;
}
.timeline-grid {
  display: grid;
  grid-template-columns: repeat(24, 1fr);
  position: relative;
  height: 42px;
  background-image: linear-gradient(
    to right,
    var(--border-color-light) 1px,
    transparent 1px
  );
  background-size: calc(100% / 24) 100%;
}

/* ----------------- Live Time Marker ----------------- */
.current-time-line {
  position: absolute;
  top: -10px;
  bottom: -10px;
  width: 2px;
  background-color: var(--color-error);
  z-index: 10;
}
.current-time-line::after {
  content: "";
  position: absolute;
  top: 0;
  left: -4px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--color-error);
  box-shadow: 0 0 5px rgba(220, 53, 69, 0.5);
}

/* ----------------- Event ----------------- */
.event {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0 10px;
  margin: 3px 1px;
  border-radius: var(--radius-md);
  height: 30px;
  color: #111;
  font-size: 0.85rem;
  font-weight: 500;
  box-shadow: var(--shadow-sm);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  cursor: pointer;
}
.event:hover {
  transform: translateY(-1px);
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.12);
  z-index: 5;
}
body.dark-mode .event {
  color: #fff;
  text-shadow: 0 1px 2px rgba(0,0,0,0.2);
}

.event-label {
  flex: 1;
  text-align: center;
  font-weight: 600;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 5px;
}

.event-icon {
  font-size: 0.7rem;
}

/* ----------------- Context Menu ----------------- */
.context-menu {
  position: absolute;
  z-index: 1000;
  background: var(--bg-surface);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
  padding: 8px;
  width: 180px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  border: 1px solid var(--border-color);
}
.ctx-header {
  font-weight: 600;
  padding: 4px 8px;
  font-size: 1rem;
}
.ctx-contact {
  font-size: 0.85rem;
  color: var(--text-secondary);
  padding: 0 8px 6px;
  border-bottom: 1px solid var(--border-color-light);
}
.ctx-btn {
  display: flex;
  align-items: center;
  gap: 8px;
  background: none;
  border: none;
  text-align: left;
  padding: 8px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: 0.9rem;
  color: var(--text-primary);
}
.ctx-btn:hover {
  background: var(--bg-primary);
}
.ctx-btn .ctx-icon {
  width: 16px;
  text-align: center;
}

/* ----------------- Misc ----------------- */
.empty-message {
  padding: 1rem;
  color: var(--text-secondary);
  font-style: italic;
  text-align: center;
}
footer {
  text-align: center;
  font-size: 0.8rem;
  color: var(--text-secondary);
  padding: 1.2rem;
}

/* ----------------- Toast ----------------- */
.toast-container {
  position: fixed;
  top: 20px;
  right: 20px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  z-index: 1000;
}
.toast {
  background: var(--bg-surface);
  border-left: 5px solid;
  padding: 12px 16px;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
  min-width: 260px;
  animation: fadeIn 0.3s ease, fadeOut 0.3s ease 4s forwards;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-primary);
}
.toast.success {
  border-color: var(--color-success);
}
.toast.error {
  border-color: var(--color-error);
}
.toast.info {
  border-color: var(--color-info);
}
.toast button {
  border: none;
  background: transparent;
  font-weight: bold;
  cursor: pointer;
  color: var(--text-secondary);
  margin-left: 10px;
  font-size: 1rem;
}
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(-10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}
@keyframes fadeOut {
  to {
    opacity: 0;
    transform: translateY(-10px);
  }
}

/* ----------------- Responsive ----------------- */
@media (max-width: 880px) {
  .time-header {
    grid-template-columns: 120px repeat(24, 1fr);
  }
  .timeline-row {
    grid-template-columns: 120px 1fr;
  }
}
@media (max-width: 540px) {
  .controls {
    flex-direction: column;
    align-items: stretch;
    gap: 1rem;
  }
  #openModalBtn {
    margin-left: 0;
  }
  .date-controls {
    justify-content: center;
  }
  .time-header {
    grid-template-columns: 100px repeat(24, 40px);
  }
  .timeline-grid {
    grid-template-columns: repeat(24, 40px);
  }
  .timeline-row {
    grid-template-columns: 100px 1fr;
  }
  .event-label {
    font-size: 0.75rem;
  }
  .modal-content {
    margin: 1rem;
  }
}