:root {
  --bg-app: #ece8de;
  --bg-gradient: radial-gradient(circle at 15% 20%, #fdf7ed 0%, #ece8de 55%, #e2ddd1 100%);
  --surface: #fffdf9;
  --surface-muted: #f3efe5;
  --surface-soft: #f8f4ec;
  --text-main: #1f2a2a;
  --text-muted: #5f6e69;
  --primary: #0e7065;
  --primary-strong: #0b5a51;
  --accent: #c56b46;
  --accent-soft: #fbe6d8;
  --success-bg: #e3f5ee;
  --success-text: #14543d;
  --neutral-bg: #ece7db;
  --neutral-text: #4f5b56;
  --danger-bg: #fae2dc;
  --danger-text: #7b2d1f;
  --border-soft: #ded7c8;
  --shadow-soft: 0 8px 24px rgba(22, 36, 31, 0.08);
  --radius-lg: 18px;
  --radius-md: 14px;
  --radius-pill: 999px;
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 20px;
  --space-6: 24px;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
}

body {
  font-family: "Sora", sans-serif;
  color: var(--text-main);
  background: var(--bg-gradient);
}

.app-shell {
  max-width: 460px;
  min-height: 100dvh;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  background: color-mix(in srgb, var(--bg-app) 86%, #ffffff 14%);
  box-shadow: 0 0 0 1px rgba(64, 80, 72, 0.05), var(--shadow-soft);
}

.app-topbar {
  position: relative;
  width: 100%;
  padding: 14px var(--space-5);
  border-bottom: 1px solid var(--border-soft);
  background: linear-gradient(160deg, #f8f3e8 0%, #ecf3e6 100%);
}

.topbar-back-btn {
  position: absolute;
  left: var(--space-4);
  top: 50%;
  transform: translateY(-50%);
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 1px solid var(--border-soft);
  background: color-mix(in srgb, var(--surface) 92%, #ffffff 8%);
  display: grid;
  place-items: center;
  color: var(--primary-strong);
  box-shadow: 0 2px 6px rgba(22, 36, 31, 0.08);
}

.topbar-back-btn[hidden] {
  display: none;
}

.topbar-back-btn .material-symbols-outlined {
  font-size: 1.2rem;
}

.app-title-wrap {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
}

.app-title-wrap .material-symbols-outlined {
  color: var(--primary-strong);
  font-size: 1.35rem;
}

.app-title {
  margin: 0;
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--primary-strong);
}

.tab-content {
  flex: 1;
  overflow-y: auto;
  padding: var(--space-5);
  padding-bottom: 92px;
}

.bottom-nav {
  position: sticky;
  bottom: 0;
  z-index: 10;
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  padding: var(--space-2) var(--space-2) calc(var(--space-2) + env(safe-area-inset-bottom));
  background: rgba(255, 253, 249, 0.95);
  border-top: 1px solid var(--border-soft);
  backdrop-filter: blur(12px);
}

.bottom-nav.is-admin {
  grid-template-columns: repeat(4, 1fr);
}

.nav-btn,
.btn {
  border: none;
  background: none;
  font: inherit;
  color: inherit;
  cursor: pointer;
}

.nav-btn {
  padding: var(--space-2) var(--space-1);
  border-radius: var(--radius-md);
  display: grid;
  justify-items: center;
  gap: var(--space-1);
  font-size: 0.68rem;
  font-weight: 600;
  color: var(--text-muted);
  transition: background-color 0.2s ease, color 0.2s ease, transform 0.2s ease;
}

.nav-btn .material-symbols-outlined {
  font-size: 1.35rem;
}

.nav-btn.is-active {
  color: var(--primary-strong);
  background: color-mix(in srgb, var(--primary) 14%, #ffffff 86%);
}

.nav-btn:active {
  transform: translateY(1px);
}

.heading {
  margin: 0;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.heading-lg {
  font-size: 1.1rem;
}

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

.stack-xs > * + * {
  margin-top: var(--space-2);
}

.stack-sm > * + * {
  margin-top: var(--space-3);
}

.stack-md > * + * {
  margin-top: var(--space-4);
}

.section {
  animation: rise 0.35s ease;
}

.card {
  border-radius: var(--radius-lg);
  background: var(--surface);
  border: 1px solid rgba(152, 165, 153, 0.2);
  box-shadow: var(--shadow-soft);
  padding: var(--space-4);
}

.disclosure {
  padding: 0;
  overflow: hidden;
}

.disclosure-trigger {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2);
  padding: var(--space-4);
  font-weight: 700;
  color: var(--primary-strong);
  background: color-mix(in srgb, var(--surface) 88%, var(--primary) 12%);
  border: none;
  cursor: pointer;
}

.disclosure-trigger .material-symbols-outlined {
  font-size: 1.3rem;
  transition: transform 0.2s ease;
}

.disclosure-trigger[aria-expanded="true"] .material-symbols-outlined {
  transform: rotate(180deg);
}

.disclosure-body {
  padding: 0 var(--space-4) var(--space-4);
}

.card-title {
  margin: 0;
  font-size: 1rem;
  font-weight: 700;
}

.card-subtitle {
  margin: var(--space-1) 0 0;
  font-size: 0.9rem;
  color: var(--text-muted);
}

.chip {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  border-radius: var(--radius-pill);
  padding: 6px 12px;
  font-size: 0.75rem;
  font-weight: 600;
}

.chip-positive {
  background: var(--success-bg);
  color: var(--success-text);
}

.chip-neutral {
  background: var(--neutral-bg);
  color: var(--neutral-text);
}

.chip-alert {
  background: var(--danger-bg);
  color: var(--danger-text);
}

.chip-accent {
  background: var(--accent-soft);
  color: #7d3d23;
}

.btn {
  border-radius: var(--radius-pill);
  padding: 10px 14px;
  font-weight: 600;
  line-height: 1;
  text-decoration: none;
  transition: transform 0.2s ease, opacity 0.2s ease;
}

.btn-with-icon {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.btn-with-icon .material-symbols-outlined {
  font-size: 1rem;
}

.btn-full {
  width: 100%;
}

.btn-primary {
  background: var(--primary);
  color: #ffffff;
}

.btn-soft {
  background: var(--surface-muted);
  color: var(--text-main);
  border: 1px solid var(--border-soft);
}

.btn-danger {
  background: color-mix(in srgb, var(--danger-text) 85%, #ffffff 15%);
  color: #ffffff;
}

.btn:active {
  transform: translateY(1px);
}

.btn:disabled,
.btn[disabled] {
  opacity: 1;
  cursor: not-allowed;
  pointer-events: none;
  box-shadow: none;
}

.btn-primary:disabled,
.btn-primary[disabled] {
  background: var(--neutral-bg);
  border: 1px solid color-mix(in srgb, var(--neutral-text) 20%, #ffffff 80%);
  color: var(--neutral-text);
}

.btn-soft:disabled,
.btn-soft[disabled] {
  background: color-mix(in srgb, var(--surface-muted) 65%, #ffffff 35%);
  border-color: color-mix(in srgb, var(--border-soft) 80%, #ffffff 20%);
  color: color-mix(in srgb, var(--text-muted) 85%, #ffffff 15%);
}

.form {
  width: 100%;
}

.field {
  width: 100%;
}

.label {
  display: inline-block;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-muted);
}

.input {
  width: 100%;
  min-height: 42px;
  border: 1px solid var(--border-soft);
  border-radius: 12px;
  padding: 10px 12px;
  background: #ffffff;
  color: var(--text-main);
  font: inherit;
}

.input:focus {
  outline: 2px solid color-mix(in srgb, var(--primary) 28%, transparent 72%);
  border-color: color-mix(in srgb, var(--primary) 55%, #ffffff 45%);
}

.inline-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.sleep-segmented-filter {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-2);
  padding: var(--space-2);
  border-radius: var(--radius-md);
  background: color-mix(in srgb, var(--surface-soft) 88%, #ffffff 12%);
  border: 1px solid color-mix(in srgb, var(--border-soft) 80%, #ffffff 20%);
}

.sleep-segmented-filter .btn {
  width: 100%;
  justify-content: center;
}

.status-box {
  border: 1px dashed var(--border-soft);
  border-radius: var(--radius-md);
  padding: var(--space-4);
  background: var(--surface-soft);
  color: var(--text-muted);
  text-align: center;
}

.booking-bed-label {
  width: 100%;
  border-radius: 12px;
  border: 1px solid color-mix(in srgb, var(--primary) 20%, #ffffff 80%);
  background: color-mix(in srgb, var(--primary) 10%, #ffffff 90%);
  color: var(--primary-strong);
  padding: 10px 12px;
  font-size: 0.84rem;
  font-weight: 700;
}

.booking-arrival {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  color: var(--text-muted);
  font-size: 0.95rem;
  font-weight: 600;
}

.booking-arrival .material-symbols-outlined {
  color: var(--primary-strong);
  font-size: 1.1rem;
}

.booking-meal-row {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.booking-meal-qty {
  font-weight: 700;
  color: var(--text-main);
}

.booking-warning {
  border-radius: 12px;
  border: 1px solid color-mix(in srgb, var(--danger-text) 14%, #ffffff 86%);
  background: color-mix(in srgb, var(--danger-bg) 58%, #ffffff 42%);
  color: var(--danger-text);
  padding: 10px 12px;
  font-size: 0.82rem;
  font-weight: 600;
}

.booking-checkin {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  border-radius: var(--radius-pill);
  padding: 6px 12px;
  background: var(--success-bg);
  color: var(--success-text);
  font-size: 0.82rem;
  font-weight: 700;
  width: 100%;
  justify-content: center;
}

.booking-checkin .material-symbols-outlined {
  font-size: 1rem;
}

.booking-disabled-block {
  border-radius: var(--radius-md);
  border: 1px solid color-mix(in srgb, var(--text-muted) 18%, #ffffff 82%);
  background: color-mix(in srgb, var(--neutral-bg) 62%, #ffffff 38%);
  padding: var(--space-3);
  opacity: 0.6;
}

.booking-disabled-block .label,
.booking-disabled-block .input,
.booking-disabled-block .btn {
  color: color-mix(in srgb, var(--text-muted) 88%, #ffffff 12%);
}

.booking-disabled-block .input {
  background: color-mix(in srgb, var(--neutral-bg) 78%, #ffffff 22%);
}

.booking-section-title {
  margin: 0;
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--primary-strong);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.booking-shower-label {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--text-main);
}

.btn-slot {
  font-size: 0.8rem;
  padding: 8px 10px;
}

.btn-slot.is-selected {
  background: color-mix(in srgb, var(--primary) 85%, #ffffff 15%);
  color: #ffffff;
}

.admin-slot {
  border: none;
  border-radius: var(--radius-pill);
  padding: 8px 14px;
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.01em;
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.admin-slot-booked {
  background: var(--danger-bg);
  color: var(--danger-text);
  box-shadow: 0 6px 16px rgba(123, 45, 31, 0.18);
}

.admin-slot-open {
  background: var(--success-bg);
  color: var(--success-text);
  box-shadow: 0 6px 16px rgba(20, 84, 61, 0.12);
}

.admin-slot:disabled {
  cursor: default;
  box-shadow: none;
}

.admin-slot:not(:disabled):active {
  transform: translateY(1px);
}

.user-slot.user-slot-booked {
  background: var(--danger-bg);
  color: var(--danger-text);
  border-color: color-mix(in srgb, var(--danger-text) 25%, #ffffff 75%);
}

.user-slot.user-slot-open {
  background: var(--success-bg);
  color: var(--success-text);
  border-color: color-mix(in srgb, var(--success-text) 20%, #ffffff 80%);
}

.user-slot.is-selected {
  border-color: color-mix(in srgb, var(--primary) 50%, #ffffff 50%);
  box-shadow: 0 0 0 2px color-mix(in srgb, var(--primary) 25%, transparent 75%);
}

.user-toast {
  position: fixed;
  left: 50%;
  bottom: 86px;
  transform: translate(-50%, 12px);
  padding: 10px 16px;
  border-radius: 999px;
  background: color-mix(in srgb, var(--text-main) 86%, #ffffff 14%);
  color: #ffffff;
  font-size: 0.85rem;
  font-weight: 600;
  box-shadow: 0 10px 24px rgba(0, 0, 0, 0.2);
  opacity: 0;
  transition: opacity 0.2s ease, transform 0.2s ease;
  z-index: 20;
}

.user-toast.is-visible {
  opacity: 1;
  transform: translate(-50%, 0);
}

.admin-toast {
  position: fixed;
  left: 50%;
  bottom: 86px;
  transform: translate(-50%, 12px);
  padding: 10px 16px;
  border-radius: 999px;
  background: color-mix(in srgb, var(--text-main) 86%, #ffffff 14%);
  color: #ffffff;
  font-size: 0.85rem;
  font-weight: 600;
  box-shadow: 0 10px 24px rgba(0, 0, 0, 0.2);
  opacity: 0;
  transition: opacity 0.2s ease, transform 0.2s ease;
  z-index: 20;
}

.admin-toast.is-visible {
  opacity: 1;
  transform: translate(-50%, 0);
}

.loading-dot::after {
  content: "";
  width: 12px;
  height: 12px;
  border: 2px solid color-mix(in srgb, var(--primary) 30%, transparent 70%);
  border-top-color: var(--primary);
  border-radius: 50%;
  display: inline-block;
  margin-left: var(--space-2);
  vertical-align: middle;
  animation: spin 0.8s linear infinite;
}

@keyframes rise {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

@media (min-width: 740px) {
  .app-shell {
    margin: 18px auto;
    min-height: calc(100dvh - 36px);
    border-radius: 22px;
    overflow: hidden;
  }
}