/* ------------------------------------------------------------------ */
/* Design tokens                                                       */
/* ------------------------------------------------------------------ */

:root {
  --bg: #fafaf9;
  --bg-raised: #ffffff;
  --bg-inset: #f1f0ee;
  --text: #1c1c1a;
  --text-muted: #605e59;
  --text-faint: #9a978f;
  --border: #e4e2dd;
  --border-strong: #cfccc5;
  --accent: #c9922f;
  --accent-strong: #b07f22;
  --accent-soft: #f7efe0;
  --accent-text: #8f6517;
  --accent-contrast: #ffffff;
  --danger: #b42318;
  --danger-soft: #fdecea;
  --success: #1f7a3f;
  --success-soft: #e6f4ea;
  --shadow: 0 1px 2px rgb(28 28 26 / 0.04), 0 4px 16px rgb(28 28 26 / 0.05);

  --font-sans: 'Inter Variable', ui-sans-serif, system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;

  --text-xs: clamp(0.78rem, 0.76rem + 0.1vw, 0.84rem);
  --text-sm: clamp(0.88rem, 0.86rem + 0.1vw, 0.95rem);
  --text-base: clamp(1rem, 0.98rem + 0.2vw, 1.1rem);
  --text-lg: clamp(1.15rem, 1.1rem + 0.35vw, 1.3rem);
  --text-xl: clamp(1.35rem, 1.25rem + 0.6vw, 1.6rem);
  --text-2xl: clamp(1.7rem, 1.5rem + 1.3vw, 2.4rem);

  --page-width: 58rem;
  --radius: 12px;
  --radius-sm: 8px;
  --tap: 44px;

  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme='light']) {
    --bg: #0f0f10;
    --bg-raised: #18181a;
    --bg-inset: #222224;
    --text: #ebeae7;
    --text-muted: #a3a19b;
    --text-faint: #6f6d68;
    --border: #2a2a2e;
    --border-strong: #3d3d43;
    --accent: #d9a443;
    --accent-strong: #e5b45a;
    --accent-soft: #2f2614;
    --accent-text: #e2b560;
    --accent-contrast: #1a1205;
    --danger: #f07167;
    --danger-soft: #3a1b18;
    --success: #5ccf84;
    --success-soft: #15301e;
    --shadow: 0 1px 2px rgb(0 0 0 / 0.3), 0 4px 16px rgb(0 0 0 / 0.25);
    color-scheme: dark;
  }
}

/* ------------------------------------------------------------------ */
/* Base                                                                */
/* ------------------------------------------------------------------ */

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: var(--text-base);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

h1,
h2,
h3 {
  margin: 0;
  line-height: 1.25;
  font-weight: 650;
  letter-spacing: -0.015em;
  text-wrap: balance;
}

p {
  margin: 0;
}

a {
  color: var(--accent-text);
  text-decoration: none;
  text-underline-offset: 3px;
}

a:hover {
  text-decoration: underline;
}

button,
input,
select,
textarea {
  font: inherit;
  color: inherit;
}

.page {
  width: min(100% - 2rem, var(--page-width));
  margin-inline: auto;
}

.muted {
  color: var(--text-muted);
}

.small {
  font-size: var(--text-sm);
}

.page-title {
  font-size: var(--text-2xl);
  margin-bottom: 1rem;
}

.info-line {
  margin: -0.25rem 0 1.25rem;
  padding: 0.8rem 1rem;
  border-left: 3px solid var(--accent);
  background: var(--accent-soft);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  color: var(--text-muted);
  font-size: var(--text-sm);
}

.info-line strong {
  color: var(--text);
}

.page-head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem 1rem;
  margin-bottom: 1rem;
}

.page-head .page-title {
  margin-bottom: 0;
}

/* ------------------------------------------------------------------ */
/* Cards                                                               */
/* ------------------------------------------------------------------ */

.card {
  background: var(--bg-raised);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 1.25rem;
  margin-bottom: 1.25rem;
}

.card-title {
  font-size: var(--text-lg);
  margin-bottom: 0.75rem;
}

.card-head {
  padding: 1.1rem 1.25rem;
  border-bottom: 1px solid var(--border);
}

.card-head .card-title {
  margin-bottom: 0;
}

.card-flush {
  padding: 0;
  overflow: hidden;
}

/* ------------------------------------------------------------------ */
/* Buttons & forms                                                     */
/* ------------------------------------------------------------------ */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  min-height: var(--tap);
  padding: 0.6rem 1.2rem;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  font-weight: 600;
  font-size: var(--text-sm);
  cursor: pointer;
  text-decoration: none;
  transition: background 0.15s, border-color 0.15s, color 0.15s, opacity 0.15s;
}

.btn:hover {
  text-decoration: none;
}

.btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.btn-primary {
  background: var(--accent);
  color: var(--accent-contrast);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.btn-primary:hover:not(:disabled) {
  background: var(--accent-strong);
}

.btn-ghost {
  background: transparent;
  border-color: var(--border-strong);
  color: var(--text);
}

.btn-ghost:hover {
  background: var(--bg-inset);
}

.btn-danger {
  background: transparent;
  border-color: var(--border-strong);
  color: var(--danger);
}

.btn-danger:hover {
  background: var(--danger-soft);
  border-color: var(--danger);
}

.btn-small {
  min-height: 36px;
  padding: 0.35rem 0.8rem;
}

.btn-block {
  width: 100%;
}

.btn-large {
  min-height: 52px;
  font-size: var(--text-base);
}

button.link {
  background: none;
  border: 0;
  padding: 0;
  color: var(--text-muted);
  cursor: pointer;
  font-size: inherit;
}

button.link:hover {
  color: var(--text);
  text-decoration: underline;
}

.form {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.form-inline {
  flex-direction: row;
  flex-wrap: wrap;
  align-items: flex-end;
}

.form-inline .field {
  min-width: 9rem;
}

.field-grow {
  flex: 1 1 12rem;
}

.field {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.field > span {
  font-weight: 600;
  font-size: var(--text-sm);
  color: var(--text-muted);
}

.field input,
.field select,
.field textarea {
  min-height: var(--tap);
  padding: 0.55rem 0.8rem;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  background: var(--bg-raised);
  width: 100%;
  font-size: 16px; /* brání zoomu na iOS */
}

.field textarea {
  resize: vertical;
  min-height: 5rem;
}

.field input:focus,
.field select:focus,
.field textarea:focus {
  outline: 2px solid var(--accent);
  outline-offset: 1px;
  border-color: var(--accent);
}

.field input[aria-invalid='true'] {
  border-color: var(--danger);
}

.field > .field-error {
  color: var(--danger);
  font-size: var(--text-xs);
  font-weight: 500;
}

.form-row {
  display: grid;
  gap: 1rem;
  grid-template-columns: 1fr;
}

@media (min-width: 560px) {
  .form-row {
    grid-template-columns: 1fr 1fr;
  }
}

.form-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  justify-content: flex-end;
}

.form-error,
.flash-err {
  background: var(--danger-soft);
  color: var(--danger);
  border-radius: var(--radius-sm);
  padding: 0.7rem 0.9rem;
  font-size: var(--text-sm);
  margin-bottom: 1rem;
}

.flash-ok {
  background: var(--success-soft);
  color: var(--success);
  border-radius: var(--radius-sm);
  padding: 0.7rem 0.9rem;
  font-size: var(--text-sm);
  margin-bottom: 1rem;
}

.badge {
  display: inline-block;
  font-size: var(--text-xs);
  font-weight: 600;
  padding: 0.15rem 0.55rem;
  border-radius: 999px;
}

.badge-free {
  background: var(--success-soft);
  color: var(--success);
}

.badge-booked {
  background: var(--accent-soft);
  color: var(--accent-text);
}

.badge-muted {
  background: var(--bg-inset);
  color: var(--text-muted);
}

.notice-text {
  white-space: pre-line;
}

/* ------------------------------------------------------------------ */
/* Customer page                                                       */
/* ------------------------------------------------------------------ */

.site-header {
  padding: 1.5rem 0 0.5rem;
}

.site-header .brand {
  font-weight: 600;
  color: var(--text-muted);
  font-size: var(--text-sm);
}

.hero {
  padding: 1rem 0 1.5rem;
}

.hero h1 {
  font-size: var(--text-2xl);
  margin-bottom: 0.5rem;
}

.hero p {
  color: var(--text-muted);
}

.notes {
  display: grid;
  gap: 0.75rem;
  margin: 1.25rem 0 3rem;
}

.note {
  display: flex;
  gap: 0.7rem;
  align-items: flex-start;
  font-size: var(--text-base);
  color: var(--text-muted);
}

.note svg {
  flex: 0 0 auto;
  width: 20px;
  height: 20px;
  margin-top: 0.25rem;
  color: var(--accent);
}

.section-title {
  font-size: var(--text-xl);
  margin: 0 0 0.75rem;
}

/* Booking widget */

.booking-grid {
  display: grid;
  grid-template-columns: 1fr;
}

@media (min-width: 720px) {
  .booking-grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  }

  .booking-grid > * + * {
    border-left: 1px solid var(--border);
  }
}

.calendar {
  padding: 1rem 1rem 1.25rem;
}

.calendar-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.75rem;
}

.calendar-nav h3 {
  font-size: var(--text-base);
  text-transform: none;
}

.calendar-nav button {
  width: var(--tap);
  height: var(--tap);
  border-radius: 50%;
  border: 0;
  background: transparent;
  color: var(--text-muted);
  cursor: pointer;
  font-size: 1.4rem;
  line-height: 1;
}

.calendar-nav button:hover:not(:disabled) {
  background: var(--bg-inset);
  color: var(--text);
}

.calendar-nav button:disabled {
  opacity: 0.3;
  cursor: default;
}

.calendar-grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 4px;
  text-align: center;
}

.calendar-weekday {
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--text-muted);
  padding: 0.4rem 0 0.6rem;
}

.calendar-day {
  aspect-ratio: 1;
  max-height: 48px;
  width: 100%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  border: 0;
  background: transparent;
  color: var(--text-faint);
  font-size: var(--text-sm);
  font-weight: 500;
  cursor: default;
  transition: background 0.15s, color 0.15s;
}

.calendar-day.is-available {
  background: var(--bg-inset);
  color: var(--text);
  font-weight: 600;
  cursor: pointer;
}

.calendar-day.is-available:hover {
  background: var(--border);
}

.calendar-day.is-selected {
  background: var(--accent);
  color: var(--accent-contrast);
}

.calendar-day.is-today:not(.is-selected) {
  box-shadow: inset 0 0 0 1.5px var(--border-strong);
}

.calendar-day.is-outside {
  opacity: 0.55;
}

.calendar-day:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.times {
  padding: 1rem 1rem 1.25rem;
}

.times-title {
  font-size: var(--text-base);
  font-weight: 650;
  margin-bottom: 0.9rem;
  text-transform: none;
}

.time-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(7.5rem, 1fr));
  gap: 0.6rem;
}

.time-pill {
  min-height: 52px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.05rem;
  border: 1.5px solid var(--border-strong);
  border-radius: 999px;
  background: var(--bg-raised);
  cursor: pointer;
  padding: 0.35rem 0.8rem;
  transition: border-color 0.15s, background 0.15s, color 0.15s;
}

.time-pill:hover {
  border-color: var(--accent);
  background: var(--accent-soft);
}

.time-pill.is-selected {
  border-color: var(--accent);
  background: var(--accent);
  color: var(--accent-contrast);
}

.time-pill strong {
  font-size: var(--text-base);
  font-weight: 600;
}

.time-pill small {
  font-size: var(--text-xs);
  opacity: 0.8;
}

.times-empty {
  color: var(--text-muted);
  font-size: var(--text-sm);
}

.summary {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem 1rem;
  padding: 0.9rem 1rem;
  border-radius: var(--radius-sm);
  background: var(--accent-soft);
  color: var(--text);
  margin-bottom: 1.25rem;
}

.summary-main {
  display: flex;
  flex-direction: column;
}

.summary-main strong,
.summary-main span {
  font-size: var(--text-base);
  font-weight: 650;
  color: var(--text);
}

.booking-form {
  padding: 1.25rem;
}

.booking-step {
  margin-bottom: 2rem;
}

.submit-row {
  margin-top: 1.5rem;
}

.loading {
  padding: 2rem;
  text-align: center;
  color: var(--text-muted);
}

.success {
  padding: 1.5rem 1.25rem;
  text-align: center;
}

.success-icon {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--success-soft);
  color: var(--success);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1rem;
}

.success h2 {
  font-size: var(--text-xl);
  margin-bottom: 0.5rem;
}

.success p {
  color: var(--text-muted);
  max-width: 32rem;
  margin-inline: auto;
}

.success .summary {
  margin: 1.25rem auto 0;
  max-width: 28rem;
  justify-content: center;
  text-align: left;
}

.success-actions {
  margin-top: 1.5rem;
}

/* Upozornění (info box) */

.notice-box {
  display: flex;
  gap: 0.75rem;
  align-items: flex-start;
  padding: 0.9rem 1rem;
  margin: 0 0 1.5rem;
  border-radius: var(--radius-sm);
  background: var(--accent-soft);
  border: 1px solid color-mix(in srgb, var(--accent) 35%, transparent);
  color: var(--text);
  white-space: pre-line;
}

.notice-box svg {
  flex: 0 0 auto;
  width: 20px;
  height: 20px;
  margin-top: 0.2rem;
  color: var(--accent);
}

.notice-list {
  margin-top: -0.25rem;
}

/* ------------------------------------------------------------------ */
/* Admin                                                               */
/* ------------------------------------------------------------------ */

.admin-header {
  background: var(--bg-raised);
  border-bottom: 1px solid var(--border);
  margin-bottom: 1.5rem;
}

.admin-header-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem 1rem;
  min-height: 56px;
  padding: 0.5rem 0;
}

.admin-header .brand {
  font-weight: 650;
  color: var(--text);
}

.admin-nav {
  display: flex;
  align-items: center;
  gap: 1rem;
  font-size: var(--text-sm);
}

.admin-nav a {
  color: var(--text-muted);
  font-weight: 500;
  padding: 0.4rem 0;
}

.admin-nav a.active {
  color: var(--text);
  box-shadow: inset 0 -2px 0 var(--accent);
}

.admin-main {
  padding-bottom: 3rem;
}

.login-card {
  max-width: 24rem;
  margin: 3rem auto;
}

.segmented {
  display: inline-flex;
  border: 1px solid var(--border-strong);
  border-radius: 999px;
  padding: 2px;
  font-size: var(--text-sm);
}

.segmented a {
  padding: 0.35rem 0.9rem;
  border-radius: 999px;
  color: var(--text-muted);
  font-weight: 500;
}

.segmented a.active {
  background: var(--accent);
  color: var(--accent-contrast);
}

.month-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.75rem;
}

.month-nav .card-title {
  margin: 0;
  text-transform: capitalize;
}

.day-group {
  margin: 1.25rem 0 0;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg-raised);
  overflow: hidden;
}

.day-group.is-past {
  opacity: 0.6;
}

.day-title {
  font-size: var(--text-base);
  font-weight: 650;
  margin: 0;
  padding: 0.65rem 1rem;
  background: var(--bg-inset);
  border-bottom: 1px solid var(--border);
  text-transform: capitalize;
}

.day-group .slot-list {
  padding: 0.75rem;
}

.slot-list,
.res-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.slot-row,
.res-row {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 0.5rem 1rem;
  align-items: center;
  padding: 0.65rem 0.8rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg);
}

.slot-row.is-booked {
  background: var(--accent-soft);
  border-color: transparent;
}

.slot-main {
  display: flex;
  flex-direction: column;
}

.slot-time {
  font-weight: 600;
}

.slot-room,
.slot-who {
  font-size: var(--text-sm);
  color: var(--text-muted);
}

.slot-status {
  grid-column: 1;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.4rem 0.6rem;
}

.slot-actions {
  grid-column: 2;
  grid-row: 1 / span 2;
}

.res-row {
  grid-template-columns: 1fr;
}

.res-when,
.res-who {
  display: flex;
  flex-direction: column;
  gap: 0.1rem;
}

.res-actions {
  display: flex;
  gap: 0.5rem;
}

@media (min-width: 640px) {
  .slot-row {
    grid-template-columns: 11rem 1fr auto;
  }

  .slot-status {
    grid-column: auto;
  }

  .slot-actions {
    grid-column: auto;
    grid-row: auto;
  }

  .res-row {
    grid-template-columns: 11rem 1fr auto;
  }
}