:root {
  --color-bg: #f8fbff;
  --color-primary: #4a90e2;
  --color-secondary: #7ec3ff;
  --color-text: #222e3a;
  --color-text-secondary: #555f73;
  --color-border: #dbeafe;
  --color-today: #e3f0ff;
  --color-weekend: #f0f4fa;
  --color-selected: #b3d8fd;
  /* Calendar day cell sizing and layout */
  --kairos-day-cell-aspect-ratio: 1;
  --kairos-day-cell-min-size: 180px;
  --kairos-day-cell-max-size: 280px;
  --kairos-day-cell-gap: 0.5em;
  --kairos-day-cell-padding: 0.5em;
  --kairos-day-cell-border-radius: 8px;
  --kairos-day-cell-border: 1px solid var(--color-border);
  --kairos-day-cell-scrollbar: auto; /* auto | always | hover | never */
  --kairos-day-cell-max-entries: auto; /* can be set by JS */
}

.theme-default {
  --color-bg: #f8fbff;
  --color-primary: #4a90e2;
  --color-accent: #7ec3ff;
  --color-text: #222e3a;
  --color-border: #dbeafe;
  --color-today: #e3f0ff;
  --color-selected: #b3d8fd;
  --kairos-day-cell-gap: 2px;
  --kairos-day-cell-border-radius: 0;
  --kairos-day-cell-border: 1px solid var(--color-border);
  --kairos-day-cell-item-bg: #AAAAAA;
  --kairos-day-cell-min-size: 220px;
  --kairos-day-cell-max-size: 300px;
}

.theme-dark {
  --color-bg: #1a2233;
  --color-primary: #4a90e2;
  --color-accent: #7ec3ff;
  --color-text: #eaf6ff;
  --color-border: #2a3448;
  --color-today: #22304a;
  --color-selected: #2d4a6a;
}

.theme-gray-light {
  --color-bg: #ffffff; /* white background for light theme */
  --color-primary: #111111; /* primary text / strong accents */
  --color-accent: #6b6b6b; /* mid gray accent */
  --color-text: #111111; /* main text color (near-black) */
  --color-text-secondary: #888888; /* secondary text */
  --color-border: #e6e6e6; /* light gray borders */
  --color-today: #f5f5f5; /* subtle highlight for today */
  --color-selected: #EEEEEE; /* selected cell background */
  /* Layout adjustments for gray-light theme */
  --kairos-day-cell-gap: 0px; /* remove gaps between day containers */
  --kairos-day-cell-border-radius: 0; /* no rounded corners */
  --kairos-day-cell-border: 1px solid var(--color-border); /* always 1px */
  --kairos-day-cell-item-bg: #DDDDDD;
  --kairos-day-cell-min-size: 180px;
  --kairos-day-cell-max-size: 280px;
  --kairos-slot-row-hover-bg: rgba(0, 0, 0, 0.05); /* subtle hover effect for slots */
}

.kairos-calendar {
  max-width: 1400px;
  margin-left: auto;
  margin-right: auto;
  margin-top: 100px;
}

.kairos__entry-date {
  text-align: center;
  /* $min and $max are in rem/em units; $vw is viewport-based value (e.g. 2.5vh or 2vw) */
  font-size: clamp(0.9em, 2.2vh, 1.2em);
  font-weight: 600;
  color: var(--color-text-secondary, #4a90e2);
  letter-spacing: 0.01em;
  transition: color 0.2s;
}

.kairos__entry-title {
  font-weight: normal;
  font-size: 0.8em;
  color: var(--color-text-secondary, #555f73);
}

.kairos__day-title {
  min-height: 2.5em;
  border-bottom: 1px solid var(--color-border, #dbeafe);
}

.kairos__day-holiday-name {
  font-size: 0.75em;
  color: var(--color-text-secondary, #4a90e2);
  opacity: 0.8;
  text-align: center;
}

.theme-dark .kairos__entry-date {
  color: var(--color-accent, #7ec3ff);
}

.kairos-calendar__header {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1em;
  padding: 0.5em 0;
  margin-bottom: 1em;
}

.kairos-calendar__title {
  flex: 0 1 auto;
  text-align: center;
  /* $min and $max are in rem/em units; $vw is viewport-based value (e.g. 2.5vh or 2vw) */
  font-size: clamp(1em, 2.6vh, 1.4em);
  font-weight: bold;
  color: var(--color-primary);
  letter-spacing: 0.02em;
  padding-left: 1em;
  padding-right: 1em;
}

.kairos-calendar__nav-btn {
  background: var(--color-bg);
  color: var(--color-primary);
  border: 1px solid var(--color-border);
  border-radius: 50%;
  width: 2.2em;
  height: 2.2em;
  /* $min and $max are in rem/em units; $vw is viewport-based value (e.g. 2.5vh or 2vw) */
  font-size: clamp(0.9em, 2.2vh, 1.2em);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: background 0.15s, color 0.15s, box-shadow 0.15s;
  box-shadow: 0 1px 2px rgba(74, 144, 226, 0.04);
  outline: none;
}

.kairos-calendar__nav-btn:hover,
.kairos-calendar__nav-btn:focus {
  background: var(--color-primary);
  color: #fff;
  border-color: var(--color-primary);
}

.kairos-calendar__nav-btn:active {
  background: var(--color-accent);
  color: #fff;
  border-color: var(--color-accent);
}

/* Disabled nav button state: visually inert */
.kairos-calendar__nav-btn.kairos-calendar__nav-btn--disabled,
.kairos-calendar__nav-btn[disabled] {
  color: var(--color-muted, #9aa3b2);
  background: var(--color-bg);
  border-color: var(--color-border);
  opacity: 0.6;
  cursor: not-allowed;
  pointer-events: none;
  /* ensure no hover/click */
}

/* Prevent hover/focus/active styles when disabled */
.kairos-calendar__nav-btn.kairos-calendar__nav-btn--disabled:hover,
.kairos-calendar__nav-btn.kairos-calendar__nav-btn--disabled:focus,
.kairos-calendar__nav-btn.kairos-calendar__nav-btn--disabled:active,
.kairos-calendar__nav-btn[disabled]:hover,
.kairos-calendar__nav-btn[disabled]:focus,
.kairos-calendar__nav-btn[disabled]:active {
  background: var(--color-bg);
  color: var(--color-muted, #9aa3b2);
  border-color: var(--color-border);
  box-shadow: none;
}

.kairos-calendar__days {
  display: grid;
  gap: var(--kairos-day-cell-gap);
  width: 100%;
  height: 100%;
  grid-template-columns: repeat(var(--kairos-days-cols, 7), minmax(var(--kairos-day-cell-min-size), var(--kairos-day-cell-max-size)));
  grid-auto-rows: 1fr;
  margin-bottom: 1em;
}

.kairos-calendar--mode-day .kairos-calendar__days {
  --kairos-days-cols: 1;
}

.kairos-calendar--mode-week .kairos-calendar__days {
  --kairos-days-cols: 7;
}

.kairos-calendar--mode-month .kairos-calendar__days {
  --kairos-days-cols: 7;
}

.kairos-calendar__day {
  background: var(--color-bg);
  color: var(--color-text);
  border: var(--kairos-day-cell-border);
  border-radius: var(--kairos-day-cell-border-radius);
  /* aspect-ratio removed to allow flexible content height; previous behavior used --kairos-day-cell-aspect-ratio */
  /* If you need a fixed aspect ratio, set it explicitly on the container or via a theme class. */
  min-width: var(--kairos-day-cell-min-size);
  min-height: var(--kairos-day-cell-min-size);
  max-width: 100%;
  max-height: 100%;
  padding: var(--kairos-day-cell-padding);
  box-sizing: border-box;
  display: flex;
  flex-direction: column;
  position: relative;
  overflow: hidden;
  cursor: pointer;
  transition: background 0.2s, border-color 0.2s;
  /* ensure font scales inside the cell */
  /* $min and $max are in rem/em units; $vw is viewport-based value (e.g. 2.5vh or 2vw) */
  font-size: clamp(0.9em, 2vh, 1em);
}

.kairos-calendar--auto-border-detect .kairos-calendar__days .kairos-calendar__day {
  position: relative;
  /* Reset to no border; we'll selectively add */
  border: none;
  box-shadow: none;
}

.kairos-calendar--auto-border-detect .kairos-calendar__days .kairos-calendar__day {
  /* Base perimeter: always draw top & left; draw right/bottom only if no neighbor */
  border-top: 1px solid var(--color-border);
  border-left: 1px solid var(--color-border);
}

.kairos-calendar--auto-border-detect .kairos-calendar__days .kairos-calendar__day:not(.kairos-calendar__day--has-right) {
  border-right: 1px solid var(--color-border);
}

.kairos-calendar--auto-border-detect .kairos-calendar__days .kairos-calendar__day:not(.kairos-calendar__day--has-bottom) {
  border-bottom: 1px solid var(--color-border);
}

.kairos-calendar--auto-border-detect .kairos-calendar__days .kairos-calendar__day.kairos-calendar__day--today {
  box-shadow: 0 0 0 1px var(--color-primary, #4a90e2) inset;
}

.kairos-calendar--auto-border-detect .kairos-calendar__days .kairos-calendar__day.kairos-calendar__day--selected {
  box-shadow: 0 0 0 1px var(--color-accent, #7ec3ff) inset;
}

.kairos-calendar__day--today {
  background: var(--color-today);
  border-color: var(--color-primary);
  color: var(--color-primary);
  font-weight: bold;
  /* reduce inset thickness so border remains 1px visual */
  box-shadow: 0 0 0 1px var(--color-primary, #4a90e2) inset;
  z-index: 1;
}

.kairos-calendar__day--selected {
  background: var(--color-selected);
  border-color: var(--color-accent);
  color: var(--color-accent);
  font-weight: bold;
  /* keep inset subtle so border remains visually 1px */
  box-shadow: 0 0 0 1px var(--color-accent, #7ec3ff) inset;
  z-index: 2;
}

.kairos-calendar__day--weekend {
  background: var(--color-weekend);
}

/* Disabled day cell: visually inert */
.kairos-calendar__day--disabled,
.kairos-calendar__day[aria-disabled=true] {
  background: #EEEEEE !important;
  color: #888888 !important;
  cursor: not-allowed;
}

.kairos-calendar__day--disabled .kairos__entry,
.kairos-calendar__day[aria-disabled=true] .kairos__entry {
  opacity: 0.7;
}

.kairos-calendar__entries {
  flex: 1 1 auto;
  overflow-y: auto;
  margin-top: 0.3em;
  /* Scrollbar visibility handled by modifier class */
}

.kairos-calendar__entry {
  background: var(--color-secondary, #eaf6ff);
  color: var(--color-text-secondary, #555f73);
  border-radius: 4px;
  padding: 0.2em 0.4em;
  margin-bottom: 0.2em;
  font-size: 0.95em;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.kairos-calendar__entries--scrollbar-always {
  scrollbar-gutter: stable both-edges;
  overflow-y: scroll !important;
}

.kairos-calendar__entries--scrollbar-auto {
  overflow-y: auto !important;
}

.kairos-calendar__entries--scrollbar-hover {
  overflow-y: hidden;
}

.kairos-calendar__entries--scrollbar-hover:hover {
  overflow-y: auto;
}

.kairos-calendar__entries--scrollbar-never {
  overflow-y: hidden !important;
  scrollbar-width: none;
}

.kairos-calendar__entries--scrollbar-never::-webkit-scrollbar {
  display: none;
}

.kairos__slot-list {
  display: flex;
  flex-direction: column;
  width: 100%;
  /* Visual helpers: allow optional max-height and overflow controlled via JS options */
  --kairos-slot-list-max-height: none;
  /* e.g. '12em' or '200px' */
  --kairos-slot-list-min-height: none;
  /* e.g. '6em' or '100px' or '1:2' */
  max-height: var(--kairos-slot-list-max-height, none);
  overflow-y: auto;
  /* default, can be overridden by JS via inline style */
  min-height: var(--kairos-slot-list-min-height, auto);
}

.kairos__slot-row {
  display: grid;
  grid-template-columns: 3.5em 1fr;
  align-items: start;
  min-height: 2.5rem;
  border-bottom: 1px solid var(--color-border, #eee);
  position: relative;
  box-sizing: border-box;
}

.kairos__slot-row-hoverable {
  cursor: pointer;
  transition: background 0.15s;
}

.kairos__slot-row-hoverable:hover {
  background: var(--kairos-slot-row-hover-bg, rgba(74, 144, 226, 0.1));
}

.kairos__slot-time {
  font-size: 0.95em;
  color: #888;
  text-align: right;
  padding: 0.2em 0.7em 0.2em 0.2em;
  min-width: 3em;
  user-select: none;
  background: none;
}

.kairos__slot-cell {
  position: relative;
  min-height: 2.5em;
}

.kairos__slot-event {
  background: var(--kairos-day-cell-item-bg, #e0f3ff);
  color: var(--color-text, #222);
  border-radius: 0.4em;
  padding: 0.3em 0.7em;
  margin: 0;
  font-size: 0.98em;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
  box-sizing: border-box;
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  height: 100%;
  display: flex;
  align-items: center;
  z-index: 1;
  margin: 1px;
}

.kairos__slot-row--booked .kairos__slot-cell {
  background: #f6fbff;
}

[data-kairos-holiday] {
  /* Subtle highlight; adjust or override in theme files */
  background: var(--color-holiday-bg, #fff9e6);
  border-color: var(--color-holiday-border, #f5d17a);
  position: relative;
}

[data-kairos-name]::after {
  content: attr(data-kairos-name);
  /* If a localized name attribute ("name") is present, show it faintly in the corner */
  font-size: 0.7em;
  color: var(--color-text-secondary, rgba(0, 0, 0, 0.35));
  position: absolute;
  top: 0.3em;
  right: 0.4em;
  max-width: 70%;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  pointer-events: none;
}

@media (max-width: 600px) {
  .kairos-calendar__days {
    --kairos-day-cell-min-size: 40px;
    gap: 0.2em;
  }
  .kairos-calendar__day {
    font-size: 0.9em;
    padding: 0.2em;
  }
}
.kairos-dialog__overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.25);
  z-index: 10000;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.2s;
}

.kairos-dialog {
  background: var(--color-bg, #fff);
  color: var(--color-text, #222e3a);
  border-radius: 10px;
  box-shadow: 0 4px 32px rgba(0, 0, 0, 0.18);
  min-width: 340px;
  max-width: 95vw;
  padding: 2em 2em 1.2em 2em;
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  border: 1.5px solid var(--color-border, #dbeafe);
  transition: box-shadow 0.2s, border 0.2s;
}

.kairos-dialog__title {
  font-size: 1.25em;
  font-weight: bold;
  margin-bottom: 1.2em;
  color: var(--color-primary, #4a90e2);
}

.kairos-dialog__form {
  display: flex;
  flex-direction: column;
  gap: 1.1em;
}

.kairos-dialog__field label {
  display: block;
  font-size: 1em;
  margin-bottom: 0.25em;
  color: var(--color-text, #222e3a);
}

/* Required asterisk styling */
.kairos-dialog__field-required {
  color: var(--color-danger, #cc0000);
  font-weight: 600;
  margin-left: 0.25em;
}

.kairos-dialog__field input,
.kairos-dialog__field textarea {
  width: 100%;
  font-size: 1em;
  padding: 0.5em;
  border: 1px solid var(--color-border, #dbeafe);
  border-radius: 5px;
  box-sizing: border-box;
  background: var(--color-bg, #fff);
  color: var(--color-text, #222e3a);
  transition: border 0.2s;
}

.kairos-dialog__field textarea {
  min-height: 5em;
}

.kairos-dialog__field input:focus,
.kairos-dialog__field textarea:focus {
  border-color: var(--color-primary, #4a90e2);
  outline: none;
}

.kairos-dialog__buttons {
  display: flex;
  gap: 1em;
  justify-content: flex-end;
  margin-top: 0.7em;
}

.kairos-dialog__submit {
  background: var(--color-primary, #4a90e2);
  color: #fff;
  border: none;
  border-radius: 5px;
  padding: 0.55em 1.4em;
  font-size: 1em;
  cursor: pointer;
  transition: background 0.2s;
}

.kairos-dialog__submit:hover {
  background: var(--color-accent, #7ec3ff);
}

.kairos-dialog__cancel {
  background: #f3f6fa;
  color: var(--color-text, #222e3a);
  border: 1px solid var(--color-border, #dbeafe);
  border-radius: 5px;
  padding: 0.55em 1.4em;
  font-size: 1em;
  cursor: pointer;
  transition: background 0.2s, border 0.2s;
}

.kairos-dialog__cancel:hover {
  background: var(--color-selected, #b3d8fd);
}

.kairos-dialog__hint {
  font-size: 0.9em;
  color: #7a8ca3;
  margin-top: 0.2em;
}

.kairos-dialog__errors {
  min-height: 0;
}

.kairos-dialog__booking-info {
  margin: 1em 0;
}

/* Message about required fields (inserted before buttons) */
.kairos-dialog__required-info {
  font-size: 0.9em;
  color: #6b7280; /* subtle text */
  margin-top: 0.6em;
}

/* Language switcher */
.kairos-dialog__lang-switcher {
  position: absolute;
  top: 0.75em;
  right: 0.75em;
  font-size: 0.85em;
  display: flex;
  align-items: center;
  gap: 0.4em;
}

.kairos-dialog__lang-switcher select {
  font-size: 0.85em;
  padding: 0.15em 0.4em;
  border: 1px solid var(--color-border, #dbeafe);
  border-radius: 4px;
  background: var(--color-bg, #fff);
  color: var(--color-text, #222e3a);
}

/* Theme modifier (using theme-* as utility classes) */
.theme-default .kairos-dialog,
.kairos-dialog.theme-default {
  background: var(--color-bg, #f8fbff);
  color: var(--color-text, #222e3a);
  border-color: var(--color-border, #dbeafe);
}

.theme-default .kairos-dialog__title,
.kairos-dialog.theme-default .kairos-dialog__title {
  color: var(--color-primary, #4a90e2);
}

.dev-config {
  position: fixed;
  right: 12px;
  bottom: 12px;
  z-index: 9999;
  font-family: var(--kairos-font-family, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial);
}

.dev-config__toggle {
  background: var(--kairos-accent, #2b6cb0);
  color: #fff;
  border: none;
  width: 44px;
  height: 44px;
  border-radius: 6px;
  cursor: pointer;
}

.dev-config__body {
  display: none;
  margin-top: 8px;
  background: rgba(255, 255, 255, 0.95);
  color: #222;
  border-radius: 6px;
  box-shadow: 0 6px 18px rgba(0, 0, 0, 0.12);
  padding: 10px;
  min-width: 220px;
}

.dev-config--open .dev-config__body {
  display: block;
}

.dev-config__row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 8px;
}

.dev-config__label {
  margin-right: 8px;
  font-size: 0.9em;
  color: #333;
}

.dev-config__body input[type=date], .dev-config__body select {
  flex: 1;
}

.dev-config__actions {
  display: flex;
  gap: 8px;
  justify-content: flex-end;
}

.dev-config__apply, .dev-config__reset {
  padding: 6px 10px;
  border-radius: 4px;
  border: none;
  cursor: pointer;
}

.dev-config__apply {
  background: #2b6cb0;
  color: white;
}

.dev-config__reset {
  background: #eee;
  color: #333;
}