/* ==========================================================================
   VARIABLES
   ========================================================================== */
:root {
  /* Layout & Spacing */
  --tt-margin-top: 1em;
  --tt-cell-width: 200px;
  --tt-time-cell-width: 80px;
  --tt-cell-height: 60px;
  --tt-sidebar-width: 25%;
  --tt-main-width: 75%;
  --tt-sidebar-padding: 2rem;
  --tt-sidebar-gap: 2rem;

  /* Fonts */
  --font-stack: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", "Noto Sans", "Liberation Sans", Arial, sans-serif, "Apple Color Emoji",
    "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji";
  --table-font-size: 0.8rem;
  --card-font-size: 10px;
  --list-font-size: 0.875rem;
  --modal-font-size: 10px;

  /* Colors */
  --color-border: #ccc;
  --color-bg-header: #f0f0f0;
  --color-drag-hover: #faf7e0;
  --color-card-bg: #eee;
  --color-card-hover: #ddd;
  --color-card-border-left: #0073aa;
  --color-card-text: #222;
  --color-btn-bg: #0073aa;
  --color-btn-hover: #006799;
  --color-modal-bg: #fff;
  --color-modal-shadow: rgba(0, 0, 0, 0.3);
  --color-time-modal-bg: #eee;
  --color-plus-bg: rgba(128, 128, 128, 0.2);
  --color-plus-icon: #fff;
  --color-speaker-confirmed: #5cb85c;
  --color-speaker-requested: #f0ad4e;
  --color-speaker-denied: #d9534f;

  /* Radii & Shadows */
  --radius-card: 2px;
  --radius-list-item: 0.25rem;
  --radius-modal: 6px;
  --shadow-admin: 0 1px 3px rgba(0, 0, 0, 0.1);
  --shadow-list-hover: 0 4px 6px rgba(0, 0, 0, 0.15);
  --shadow-modal: 0 0 10px var(--color-modal-shadow);
  --generic-box-radius: 4px;
  --session-button-box-shadow: 2px 2px 6px 2px rgba(0, 0, 0, 0.2);

  /* Buttons */
  --btn-padding-vertical: 0.5em;
  --btn-padding-horizontal: 1em;

  /* Plus Icon */
  --plus-size: 2rem;
  --plus-font-size: 1.5rem;

  /* Modal */
  --modal-top-offset: 20%;
  --modal-max-width: 1200px;
  --modal-max-height: 70vh;
}

/* ==========================================================================
     GLOBAL RESET & BASE
     ========================================================================== */
* {
  box-sizing: border-box;
  scroll-behavior: smooth;
  font-family: var(--font-stack);
}

body {
  margin: 0;
  padding: 0;
}

/* ==========================================================================
     LAYOUT
     ========================================================================== */
.timetable-schedule-container {
  display: flex;
}

.timetable-schedule-container > .timetable-left {
  flex: 1 1 var(--tt-main-width);
}

.timetable-schedule-container > .timetable-right {
  flex: 1 1 var(--tt-sidebar-width);
  margin: 5.6rem 0 4rem var(--tt-sidebar-gap);
  border: 1px solid var(--color-border);
  border-radius: var(--generic-box-radius);
  padding: var(--tt-sidebar-padding);
  height: fit-content;
}

.timetable-schedule-container > .timetable-right h4 {
  font-size: 1rem;
}

/* ----------------------------------------------------------------------------
     Timetable Container & Horizontal Scroll
     --------------------------------------------------------------------------- */
#seminar-timetable-container,
#session-timetables {
  margin: auto;
  overflow-x: auto;
}

#session-timetables {
  margin-top: var(--tt-margin-top);
  overflow-y: hidden;
  border-right: 2px dotted #0073aa33;
}

/* ==========================================================================
     TABLE STYLING
     ========================================================================== */
#session-timetables > h3 {
  position: absolute;
}

#session-timetables .timetable-container {
  margin-top: 100px;
}

#session-timetables .timetable {
  display: table; /* revert from block */
  border-collapse: collapse; /* collapse shared borders into single lines */
  border-spacing: 0; /* no gaps */
  width: fit-content;
  font-size: var(--table-font-size);
  border-radius: var(--generic-box-radius);
}

#session-timetables .timetable th,
#session-timetables .timetable td {
  width: var(--tt-cell-width);
  min-width: var(--tt-cell-width);
  max-width: var(--tt-cell-width);
  padding: 0.5em;
  border: 1px solid var(--color-border);
  text-align: center;
  vertical-align: middle;
  word-wrap: break-word;
  height: var(--tt-cell-height);
  position: relative;
  user-select: none;
}

#session-timetables .timetable th:first-child,
#session-timetables .timetable td:first-child {
  width: var(--tt-time-cell-width);
  min-width: var(--tt-time-cell-width);
  max-width: var(--tt-time-cell-width);
  border: 1px solid var(--color-border);
  font-weight: bold;
  background: var(--color-bg-header);
  position: sticky;
  left: 0;
  z-index: 10000;
}

#session-timetables .timetable th:first-child {
  z-index: 3;
}

#session-timetables .timetable thead tr th {
  vertical-align: middle;
}

/* ==========================================================================
     INTERACTIONS
     ========================================================================== */
/* Drag-over Highlight */
.cell-hover {
  background: var(--color-drag-hover);
  z-index: 0;
}

/* Tooltip */
.ttip {
  border-radius: 3px;
  font-size: 0.85em;
  pointer-events: none;
  z-index: 999;
}

/* Plus Icon on Empty Cell */
td[data-date]:hover {
  position: relative;
  cursor: pointer;
  box-shadow: inset 0 0 10px 0px rgba(0, 0, 0, 0.1);
}
td[data-date]:hover::before {
  content: "+";
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  display: flex;
  align-items: center;
  justify-content: center;
  width: var(--plus-size);
  height: var(--plus-size);
  font-size: var(--plus-font-size);
  font-weight: bold;
  color: var(--color-plus-icon);
  background-color: var(--color-plus-bg);
  border-radius: 50%;
  pointer-events: none;
}
td[data-date]:active {
  box-shadow: inset 0 0 15px 0px rgba(0, 0, 0, 0.25);
}

/* ==========================================================================
     SESSION CARD
     ========================================================================== */
.session-card {
  position: absolute !important;
  top: 0;
  left: 0;
  width: var(--tt-cell-width);
  padding: 0.5em;
  margin-bottom: 0.5em;
  font-weight: 400;
  background: var(--color-card-bg);
  border-left: 4px solid var(--color-card-border-left);
  color: var(--color-card-text);
  border-radius: var(--radius-card);
  font-size: var(--card-font-size);
  cursor: move;
  z-index: 999;
  text-align: start;
  border-bottom: 2px dotted var(--color-border);
}
.session-card.status-confirmed,
.session-list-item.status-confirmed {
  border-left-color: var(--color-speaker-confirmed);
}
.session-card.status-requested,
.session-list-item.status-requested {
  border-left-color: var(--color-speaker-requested);
}
.session-card.status-denied,
.session-list-item.status-denied {
  border-left-color: var(--color-speaker-denied);
}
/* somewhere in your stylesheet */
.session-card.conflict {
  border: 1px solid #e74c3c;
  background-color: rgba(231, 76, 60, 0.1);
  /* optional pulse animation to draw the eye */
  animation: pulse 1.5s infinite;
}

@keyframes pulse {
  0%,
  100% {
    box-shadow: 0 0 0 0 rgba(231, 76, 60, 0.5);
  }
  50% {
    box-shadow: 0 0 10px 5px rgba(231, 76, 60, 0);
  }
}
.session-card a {
  display: -webkit-box;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 2;
  overflow: hidden;
  text-overflow: ellipsis;
}
.session-card a,
.session-card .session-start-time,
.session-card .session-end-time {
  font-size: 10px;
}
.session-card:focus {
  outline: 2px solid #2196f3;
}
.session-card:hover {
  background: var(--color-card-hover);
  z-index: 1000;
  box-shadow: 2px 2px 10px rgba(0, 0, 0, 0.2);
}

/* ==========================================================================
   1) Shared styles for all three card‐buttons
========================================================================== */
/* shrink all Feather icons in the timetable UI */
#session-timetables .feather,
#session-timetables i[data-feather],
.custom-tooltip .feather,
.custom-tooltip i[data-feather],
.timetable-sidebar-container .feather,
.timetable-sidebar-container i[data-feather] {
  width: 1em;
  height: 1em;
  stroke-width: 0.2em;
}

.session-card .remove-session,
.session-card .edit-time-icon,
.session-card .info-icon,
.session-list-item .info-icon {
  position: absolute;
  display: none; /* all hidden by default, shown on hover */
  width: 24px;
  height: 20px;
  border: none;
  font-weight: 800;
  line-height: 1;
  color: #fff;
  cursor: pointer;
  padding: 0;
  justify-content: center;
  align-items: center;
}

/* reveal & add box-shadow on hover of the card */
.session-card:hover .remove-session,
.session-card:hover .edit-time-icon,
.session-card:hover .info-icon,
.session-list-item:hover .info-icon {
  display: flex;
  box-shadow: var(--session-button-box-shadow);
}

.info-icon.dashicons-info-outline::before {
  pointer-events: none !important;
}

/* ==========================================================================
      2) remove-session (the red "x")
========================================================================== */
.session-card .remove-session {
  top: 0;
  right: -23px; /* floats just outside the card edge */
  background: linear-gradient(271deg, #ff0000, #ff8484);
  border-top-right-radius: 4px;
  font-size: 1.2em;
}
.session-card .remove-session:hover {
  background: linear-gradient(271deg, #ff0000, #a12828);
}

/* ==========================================================================
      3) edit-time-icon (the blue "edit" pencil)
========================================================================== */
.session-card .edit-time-icon {
  top: 40px;
  right: -23px;
  background: linear-gradient(130deg, #0c77aa, #6fbbe0);
  border-bottom-right-radius: 4px;
  font-size: 1.2em;
}
.session-card:hover .edit-time-icon:hover {
  background: linear-gradient(130deg, #0c77aa, #2e6c8a);
}

/* ==========================================================================
      4) info-icon (the grey "i" for info)
========================================================================== */
.session-card .info-icon {
  top: 20px;
  right: -23px;
  background: #aaa;
  font-size: 14px; /* smaller than the others */
}
.session-list-item .info-icon {
  top: 50%;
  bottom: 50%;
  background: #aaa;
  font-size: 14px;
  right: 0;
  transform: translateY(-50%);
}
.session-card .info-icon:hover,
.session-list-item .info-icon:hover {
  background: #777;
}

/* ==========================================================================
      5) Edit venue name icon
========================================================================== */
.venue-title .edit-venue-name {
  display: none;
  cursor: pointer;
}
.venue-title:hover .edit-venue-name {
  display: inline;
  font-size: 1rem;
}
.venue-title:hover .edit-venue-name:hover {
  opacity: 0.7;
}

.edit-venue-buttons {
  display: flex;
  align-items: center;
  justify-content: center;
}

/* ==========================================================================
     INLINE TIME PICKER
========================================================================== */
.time-modal-container {
  display: flex;
  align-items: center;
  justify-content: space-evenly;
  flex-direction: column;
  width: 300px;
  border: 2px solid var(--color-border);
  border-radius: var(--radius-modal);
  box-shadow: var(--shadow-list-hover);
  position: inherit;
  background: white;
  overflow: hidden;
}
.time-modal-container > div {
  width: 100%;
  padding: 0.6rem;
}
.time-modal-container > .edit-session-title-container {
  background: var(--color-time-modal-bg);
  border-bottom: 2px dotted var(--color-border);
}
.time-modal-container > .edit-session-title-container > a {
  font-size: 12px;
  font-weight: bold;
}
.time-modal-container input {
  width: 100% !important;
  margin: 0 0.5em 0 0;
  font-size: var(--modal-font-size);
  padding: 0.4rem;
  height: 30px;
}
.time-modal-container .edit-category-input > label {
  width: 100%;
  font-size: 12px;
}
.session-modal-div {
  display: flex;
  width: 100%;
  align-items: center;
  justify-content: center;
  margin-top: 1rem;
}
.edit-time-inputs.session-modal-div {
  margin: 0;
}

/* ==========================================================================
     TIMETABLE BUTTONS
     ========================================================================== */
#timetable-buttons {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5em;
}
#saveTimetable {
  flex: 1;
}
#unsaved-count {
  width: 100%;
  padding: 0.5rem;
  font-size: 1rem;
}

/* ==========================================================================
     BUTTONS & ACTIONS
     ========================================================================== */
.timetable-button {
  display: flex;
  margin: 0.5em;
  padding: var(--btn-padding-vertical) var(--btn-padding-horizontal);
  background: var(--color-btn-bg);
  color: #fff;
  border: none;
  border-radius: var(--radius-list-item);
  cursor: pointer;
  text-decoration: none;
  font-family: var(--font-stack);
  flex-direction: column;
  align-items: center;
  justify-content: center;
  width: 70px;
  font-size: 1rem;
}
.timetable-button:hover {
  background: var(--color-btn-hover);
}

#cancelTimes,
.cancel-venue-name,
#clearAll {
  background: #aaa;
}
#cancelTimes:hover,
.cancel-venue-name:hover,
#clearAll:hover {
  background: #777;
}

.adjust-sessions-buttons {
  display: flex;
  align-items: stretch; /* <-- stretch children to same height */
  justify-content: center;
}

.adjust-sessions-buttons > button {
  flex: 1;
  box-sizing: border-box;
}

/* ==========================================================================
     TOAST NOTIFICATION
     ========================================================================== */
#session-toast {
  position: fixed;
  bottom: 1em;
  left: 50%;
  transform: translateX(-50%);
  background: #333;
  color: #fff;
  padding: 0.5em 1em;
  border-radius: var(--generic-box-radius);
  font-size: 0.9em;
  display: flex;
  align-items: center;
}
#session-toast button {
  margin-left: 1em;
  background: var(--color-btn-bg);
  border: none;
  color: #fff;
  padding: 0.2em 0.5em;
  border-radius: 2px;
  cursor: pointer;
}
#session-toast button:hover {
  background: var(--color-btn-hover);
}

/* ==========================================================================
     SIDEBAR & SESSION LIST
     ========================================================================== */
.sidebar-session-list {
  list-style: none;
  margin: 0;
  padding: 0 !important;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(var(--tt-cell-width), 1fr));
  grid-template-rows: auto;
  gap: 0.3rem;
  align-content: start;
  min-height: 200px;
  max-height: 800px;
  overflow-y: auto;
  border: 1px solid var(--color-border);
  padding: 0.5em;
  margin-top: 1em;
  font-size: 0.9em;
  border-radius: var(--generic-box-radius);
}
.session-list-item {
  display: flex;
  flex-direction: column;
  padding: 0.5rem;
  padding-right: 2rem;
  background: #fff;
  border: 1px solid var(--color-border);
  border-left: 4px solid var(--color-card-border-left);
  border-radius: var(--radius-list-item);
  box-shadow: var(--shadow-admin);
  font-size: var(--list-font-size);
  line-height: 1;
  cursor: grab;
  max-height: fit-content;
  position: relative;
}
.session-list-item:hover {
  opacity: 0.8;
  /* box-shadow: var(--shadow-list-hover); */
}
.session-list-item.ui-draggable-dragging {
  max-width: var(--tt-cell-width);
}
.session-list-item .session-id {
  font-size: 0.45rem;
  color: #555;
}
.session-list-item .session-title {
  font-size: 0.7rem;
  color: #222;
  margin: 0;
  display: -webkit-box;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 1;
  overflow: hidden;
  text-overflow: ellipsis;
}
.session-list-item .session-speakers {
  font-size: 0.8rem;
  color: #666;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  margin-top: 0.25rem;
  display: none;
}

/* ==========================================================================
     MODAL (Add Session)
     ========================================================================== */
.session-modal {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100000;
}
.session-modal-content {
  background: var(--color-modal-bg);
  padding: 1em;
  border-radius: var(--radius-modal);
  width: 90%;
  max-width: var(--modal-max-width);
  max-height: var(--modal-max-height);
  overflow-y: auto;
  box-shadow: var(--shadow-modal);
}
.session-modal-content h2 {
  margin-top: 0;
}
.session-modal-content button {
  margin-top: 1em;
}
#modalSessionList.sidebar-session-list {
  max-height: 50vh;
  margin-top: 0.5em;
}

/* ==========================================================================
     HISTORY BOX
     ========================================================================== */
.history-box {
  min-height: 200px;
  max-height: 300px;
  overflow-y: auto;
  border: 1px solid var(--color-border);
  margin-top: 1em;
  font-size: 0.9em;
  border-radius: var(--generic-box-radius);
}
.history-item {
  cursor: pointer;
  border-bottom: 1px dashed var(--color-border);
  font-size: 0.7rem;
  padding: 0.5rem 0.75rem;
}
.history-item:nth-of-type(even) {
  background: #0273aa12;
}
.history-item:hover {
  background: #f5f5f5;
}

/* apply to any scrollable boxes */
#sessionList,
#historyList {
  overflow-y: auto;
  /* <-- stop scroll chaining so wheel events stay in this box */
  overscroll-behavior: contain;
}

/* ==========================================================================
     CUSTOM TOOLTIP
     ========================================================================== */
/* Tooltip container */
.custom-tooltip {
  position: absolute;
  background: #fff;
  border: 2px solid var(--color-border);
  padding: 0;
  border-radius: var(--generic-box-radius);
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.15);
  font-size: 0.7em;
  line-height: 1.3;
  max-width: 240px;
  z-index: 99999; /* above everything */
}
.custom-tooltip[data-source="session-list-item"] {
  font-size: 0.6rem;
  line-height: 1.1;
}

/* Small arrow */
.custom-tooltip::before {
  content: "";
  position: absolute;
  top: 50%;
  left: -14px;
  transform: translateY(-50%);
  border: 6px solid transparent;
  border-right-color: var(--color-border);
}
.custom-tooltip::after {
  content: "";
  position: absolute;
  top: 50%;
  left: -12px;
  transform: translateY(-50%);
  border: 6px solid transparent;
  border-right-color: #fff;
}
.custom-tooltip .tooltip-title,
.custom-tooltip .tooltip-details {
  padding: 0.4rem;
}
.custom-tooltip[data-source="session-list-item"] .tooltip-title,
.custom-tooltip[data-source="session-list-item"] .tooltip-details {
  padding: 0.2rem;
}
.custom-tooltip .tooltip-title {
  border-bottom: 2px dotted var(--color-border);
  background: #eee;
}
.custom-tooltip .speaker-status {
  font-weight: bold;
}
.custom-tooltip .speaker-status.speaker-confirmed {
  color: var(--color-speaker-confirmed);
}
.custom-tooltip .speaker-status.speaker-requested {
  color: var(--color-speaker-requested);
}
.custom-tooltip .speaker-status.speaker-denied {
  color: var(--color-speaker-denied);
}

/* ==========================================================================
     RESPONSIVE ADJUSTMENTS
     ========================================================================== */
@media (max-width: 600px) {
  #session-timetables .timetable th,
  #session-timetables .timetable td {
    padding: 0.3em;
    font-size: 0.8em;
  }

  .session-modal-content {
    width: 90%;
  }
}