/* Public site (task 18.1; Req 1.2-1.4, 1.9-1.12, design "Public site layout").
   Mobile first: one column below 1024 px (zones, countdown, cameras, laptop form,
   visitors/stats, latest comment). At 1024 px and up, CSS grid areas place the two-column
   camera grid (cam 1 top-left, cam 2 top-right, cam 3 below cam 1) beside the controls
   column (countdown, zones, visitors/stats, laptop form, latest comment). Same document
   for both, so resizing never reloads and typed text stays.
   Night theme from tokens.css; controls at least 2.75rem (44 px) on mobile and never
   below 24 px; focus always visible; no animations, and none at all with
   prefers-reduced-motion. No horizontal scrolling from 320 to 2560 px. */
@import url('tokens.css');

*,
*::before,
*::after {
  box-sizing: border-box;
}
html {
  -webkit-text-size-adjust: 100%;
}
body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font:
    1rem/1.5 system-ui,
    -apple-system,
    'Segoe UI',
    sans-serif;
  overflow-wrap: anywhere;
}
a {
  color: var(--link);
}
:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 2px;
}
[hidden] {
  display: none !important;
}
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  white-space: nowrap;
}
.skip {
  position: absolute;
  left: -100vw;
  top: 0;
  padding: 0.5rem 1rem;
  background: var(--panel);
  z-index: 10;
}
.skip:focus {
  left: 0.5rem;
}

/* --- header --- */
.site-header {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.25rem var(--gap);
  padding: 0.25rem var(--gap);
  background: var(--panel);
  border-bottom: 1px solid var(--line);
}
.brand {
  display: inline-flex;
  align-items: center;
  min-height: var(--target);
  font-weight: 700;
  font-size: 1.125rem;
  text-decoration: none;
  color: var(--fg);
}
.site-header nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0 0.5rem;
}
.site-header nav a {
  display: inline-flex;
  align-items: center;
  min-height: var(--target);
  padding: 0 0.5rem;
}

main {
  width: 100%;
  max-width: 60rem;
  margin: 0 auto;
  padding: var(--gap);
}
h1 {
  margin: 0.5rem 0 1rem;
  font-size: 1.5rem;
}
h2 {
  margin: 0 0 0.75rem;
  font-size: 1.15rem;
}

.panel,
.entry {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 0.75rem var(--gap);
  margin: 0 0 var(--gap);
  min-width: 0;
}
.notice {
  margin: 0 0 0.5rem;
  padding: 0.5rem 0.75rem;
  border-radius: 0.35rem;
  background: #22385e;
}
.notice.error {
  background: #5c1d22;
}
.notice.warn {
  background: #4d3a0c;
}
.section-unavailable {
  margin: 0 0 0.5rem;
  color: var(--muted);
  font-style: italic;
}
.hint {
  margin: 0.25rem 0;
  color: var(--muted);
  font-size: 0.9rem;
}

/* --- form controls --- */
form label {
  display: block;
  margin-top: 0.5rem;
}
input[type='text'],
textarea,
select {
  width: 100%;
  max-width: 40rem;
  min-height: var(--target);
  padding: 0.4rem 0.6rem;
  font: inherit;
  color: var(--fg);
  background: var(--panel-2);
  border: 1px solid var(--field-border);
  border-radius: 0.35rem;
}
textarea {
  resize: vertical;
}
button {
  min-height: var(--target);
  min-width: var(--target);
  padding: 0.35rem 1rem;
  font: inherit;
  color: var(--fg);
  background: #22385e;
  border: 1px solid var(--field-border);
  border-radius: 0.35rem;
  cursor: pointer;
}
button:hover:not(:disabled) {
  background: #2c4675;
}
button:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}
button.primary {
  background: #a3262b;
  border-color: var(--accent);
  color: #fff;
}
button.primary:hover:not(:disabled) {
  background: #bd2f35;
}
.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: 0.5rem 0 0;
}
.form-status {
  margin: 0.5rem 0 0;
  min-height: 1.5em;
}
.form-status:empty {
  min-height: 0;
}

/* --- homepage grid (Req 1.9, 1.10) --- */
main.home-grid {
  max-width: 120rem;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  grid-template-areas:
    'notices'
    'zones'
    'countdown'
    'cameras'
    'laptop'
    'visitors'
    'comment';
  gap: 0 var(--gap);
  align-items: start;
}
.home-grid > * {
  min-width: 0;
}
.area-notices {
  grid-area: notices;
}
.area-zones {
  grid-area: zones;
}
.area-countdown {
  grid-area: countdown;
}
.area-cameras {
  grid-area: cameras;
}
.area-laptop {
  grid-area: laptop;
}
.area-visitors {
  grid-area: visitors;
}
.area-comment {
  grid-area: comment;
}
.notices .notice:last-child {
  margin-bottom: var(--gap);
}
.live-status {
  background: #4d3a0c;
}

/* --- countdown (Req 10) --- */
.cd-status {
  margin: 0;
  font-size: 1.75rem;
  font-weight: 800;
  letter-spacing: 0.05em;
}
.area-countdown[data-status='ONLINE'] .cd-status {
  color: #7ee08f;
}
.area-countdown[data-status='OFFLINE'] .cd-status {
  color: #ff9b9e;
}
.cd-label {
  margin: 0;
}
.cd-time {
  margin: 0.25rem 0 0;
  font-size: 1.5rem;
  font-variant-numeric: tabular-nums;
}
.area-countdown {
  text-align: center;
}

/* --- zones (Req 1.4, 3) --- */
.zone-list {
  display: grid;
  gap: 0.5rem;
  margin: 0;
  padding: 0;
  list-style: none;
}
.zone-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  grid-template-areas:
    'info status'
    'toggle toggle';
  align-items: center;
  gap: 0.35rem 0.75rem;
  padding: 0.5rem;
  background: var(--panel-2);
  border: 1px solid var(--line);
  border-left: 0.4rem solid var(--off-bg);
  border-radius: var(--radius);
}
.zone-row[data-state='ON'] {
  border-left-color: var(--on-bg);
}
.zone-row[data-state='unknown'] {
  border-left-style: dashed;
  border-left-color: var(--muted);
}
.zone-info {
  grid-area: info;
  min-width: 0;
}
.zone-n {
  display: inline-block;
  min-width: 1.75rem;
  padding: 0 0.35rem;
  border-radius: 0.25rem;
  background: var(--line);
  text-align: center;
  font-weight: 700;
}
.zone-name {
  font-weight: 600;
}
.zone-desc {
  display: block;
  color: var(--muted);
  font-size: 0.9rem;
}
.zone-desc:empty {
  display: none;
}
.zone-status {
  grid-area: status;
  margin: 0;
  text-align: right;
}
.zone-state {
  display: inline-block;
  min-width: 3.5rem;
  padding: 0.1rem 0.5rem;
  border-radius: 0.25rem;
  text-align: center;
  font-weight: 800;
  background: var(--off-bg);
  color: var(--off-fg);
}
.zone-row[data-state='ON'] .zone-state {
  background: var(--on-bg);
  color: var(--on-fg);
}
.zone-row[data-state='unknown'] .zone-state {
  background: transparent;
  border: 1px dashed var(--muted);
  font-weight: 600;
}
.zone-pending {
  display: block;
  color: var(--warn);
  font-weight: 600;
  font-size: 0.875rem;
}
.zone-toggle {
  grid-area: toggle;
  width: 100%;
  min-height: 3rem;
  font-weight: 700;
}
.zone-row[data-requested='OFF'] .zone-toggle:not(:disabled) {
  background: #1f4d2c;
  border-color: var(--on-bg);
}
.zone-onoff {
  display: none;
  grid-area: toggle;
  gap: 0.5rem;
}
.zone-onoff button {
  min-width: 4rem;
  font-weight: 700;
}
.zone-onoff button.on:not(:disabled) {
  background: #1f4d2c;
  border-color: var(--on-bg);
}
.zone-onoff button.off:not(:disabled) {
  background: #4a2026;
  border-color: var(--accent);
}
.zone-message:empty {
  display: none;
}
.zone-message {
  margin: 0 0 0.5rem;
  padding: 0.5rem 0.75rem;
  border-radius: 0.35rem;
  background: #5c1d22;
}

/* --- cameras (Req 11.12, 12) --- */
.cam-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--gap);
}
.cam {
  margin: 0;
  min-width: 0;
}
.cam figcaption {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0 0.5rem;
  margin-bottom: 0.35rem;
}
.cam-name {
  font-weight: 600;
}
.cam-status {
  font-weight: 700;
}
.cam-status::before {
  content: '● ';
}
.cam[data-status='LIVE'] .cam-status {
  color: #7ee08f;
}
.cam[data-status='OFFLINE'] .cam-status {
  color: #ff9b9e;
}
.cam[data-status='OFFLINE'] .cam-status::before {
  content: '○ ';
}
.cam-reason {
  color: var(--muted);
  flex-basis: 100%;
}
.cam-open {
  position: relative;
  display: block;
  width: 100%;
  padding: 0;
  border: 1px solid var(--line);
  background: #000;
  cursor: zoom-in;
  overflow: hidden;
}
.cam-open:hover:not(:disabled) {
  background: #000;
}
.cam-open img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  object-fit: contain;
}
/* Double buffer: the next snapshot loads behind the visible one (no flicker). */
.cam-open img.is-back {
  position: absolute;
  inset: 0;
  visibility: hidden;
}
.cam-back {
  margin-top: 0.5rem;
}
.cam-grid.solo .cam:not(.is-solo) {
  display: none;
}
.cam-grid.solo .cam.is-solo {
  grid-column: 1 / -1;
}
.cam.is-solo .cam-open {
  cursor: zoom-out;
}

/* --- laptop form, visitors, comment --- */
.laptop-form textarea {
  max-width: none;
}
.visitors {
  margin: 0;
  font-size: 1.1rem;
}
.mood {
  color: var(--link);
  font-weight: 700;
}
.stats-line {
  margin: 0.25rem 0 0;
}
.latest-comment {
  margin: 0 0 0.5rem;
  padding: 0 0 0 0.75rem;
  border-left: 3px solid var(--accent);
}
.latest-comment .c-message {
  margin: 0;
  white-space: pre-wrap;
}
.latest-comment footer {
  color: var(--muted);
  font-size: 0.9rem;
}
.area-comment a,
.entry a {
  display: inline-flex;
  align-items: center;
  min-height: 1.5rem;
}

/* --- guestbook and stats pages --- */
.entry .meta {
  margin: 0;
  color: var(--muted);
  font-size: 0.9rem;
}
.entry .message {
  white-space: pre-wrap;
}
.comments {
  list-style: none;
  margin: 0.5rem 0 0;
  padding: 0 0 0 1rem;
  border-left: 2px solid var(--line);
}
.badge {
  background: var(--accent);
  color: #fff;
  border-radius: 0.25rem;
  padding: 0 0.35rem;
  font-size: 0.8rem;
}
table {
  border-collapse: collapse;
  width: 100%;
  max-width: 40rem;
}
th,
td {
  text-align: left;
  padding: 0.25rem 0.5rem;
  border-bottom: 1px solid var(--line);
}
td.num,
th.num {
  text-align: right;
}
.pager {
  display: flex;
  flex-wrap: wrap;
  gap: var(--gap);
  padding: 0;
  list-style: none;
}
.pager a {
  display: inline-flex;
  align-items: center;
  min-height: var(--target);
}

/* --- desktop (Req 1.10) --- */
@media (min-width: 1024px) {
  main.home-grid {
    grid-template-columns: minmax(0, 2fr) minmax(20rem, 1fr);
    grid-template-rows: auto auto auto auto auto auto 1fr;
    grid-template-areas:
      'notices notices'
      'cameras countdown'
      'cameras zones'
      'cameras visitors'
      'cameras laptop'
      'cameras comment'
      'cameras .';
    padding: 1rem 1.5rem;
  }
  .cam-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .zone-row {
    grid-template-columns: minmax(0, 1fr) auto auto;
    grid-template-areas: 'info status toggle';
  }
  .zone-toggle {
    display: none;
  }
  .zone-onoff {
    display: inline-flex;
  }
  .zone-onoff button,
  .zone-toggle {
    min-height: 2.25rem;
  }
}
@media (min-width: 1800px) {
  main.home-grid {
    grid-template-columns: minmax(0, 3fr) minmax(24rem, 1fr);
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    transition: none !important;
    animation: none !important;
    scroll-behavior: auto !important;
  }
}