:root {
  --bg: #f5f6f8;
  --card-bg: #ffffff;
  --text: #111827;
  --muted: #6b7280;
  --border: #e5e7eb;
  --accent: #2aabee;
  --accent-strong: #168ac0;
  --success: #16a34a;
  --danger: #dc2626;
  --warning: #d97706;
  --shadow: 0 12px 28px rgba(17, 24, 39, .08);
  --radius: 8px;
}

[data-theme="dark"] {
  --bg: #0f172a;
  --card-bg: #111827;
  --text: #f9fafb;
  --muted: #9ca3af;
  --border: #1f2937;
  --accent: #2aabee;
  --accent-strong: #62c3ef;
  --success: #22c55e;
  --danger: #f87171;
  --warning: #fbbf24;
  --shadow: none;
}

* {
  box-sizing: border-box;
}

html {
  min-height: 100%;
  background: var(--bg);
}

body {
  min-height: 100%;
  margin: 0;
  color: var(--text);
  background: var(--bg);
  font-family: var(--desktop-font), system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Arial, sans-serif;
  font-size: var(--desktop-text-size);
  line-height: 1.55;
}

a {
  color: inherit;
  text-decoration: none;
}

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

button {
  cursor: pointer;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 72px;
  padding: 14px clamp(16px, 4vw, 44px);
  background: color-mix(in srgb, var(--bg) 90%, transparent);
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(14px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
  font-weight: 800;
}

.brand img {
  flex: 0 0 auto;
  border-radius: 8px;
}

.nav,
.actions,
.toolbar-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.nav a:not(.primary-button) {
  color: var(--muted);
}

.inline-form {
  margin: 0;
}

.shell {
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
  padding: 32px 0 56px;
}

.home-shell {
  width: min(1180px, calc(100% - 32px));
}

.home-hero {
  min-height: calc(100vh - 96px);
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(300px, 460px);
  gap: clamp(24px, 6vw, 80px);
  align-items: center;
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--accent-strong);
  font-size: .82rem;
  font-weight: 800;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  margin-bottom: 10px;
  font-size: clamp(2.35rem, 6vw, 5.5rem);
  line-height: 1;
  letter-spacing: 0;
}

h2 {
  margin-bottom: 18px;
  font-size: 1.28rem;
  line-height: 1.2;
}

.lead {
  max-width: 680px;
  color: var(--muted);
  font-size: clamp(1.05rem, 2vw, 1.35rem);
}

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

.feed-preview {
  display: grid;
  gap: 14px;
}

.preview-card,
.panel,
.post,
.empty-state {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.preview-card {
  display: grid;
  grid-template-columns: 48px minmax(0, 1fr);
  gap: 14px;
  padding: 18px;
}

.preview-card p {
  margin-bottom: 0;
  color: var(--muted);
  font-size: .95rem;
}

.accent-card {
  border-left: 4px solid var(--success);
}

.avatar-placeholder,
.channel-avatar {
  display: inline-grid;
  place-items: center;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--accent);
  color: #fff;
  font-weight: 800;
}

.avatar-placeholder.green {
  background: var(--success);
}

.primary-button,
.secondary-button,
.ghost-button,
.danger-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  padding: 9px 15px;
  border-radius: var(--radius);
  border: 1px solid transparent;
  font-weight: 700;
  line-height: 1.1;
}

.primary-button {
  color: #fff;
  background: var(--accent);
}

.secondary-button {
  color: var(--text);
  background: var(--card-bg);
  border-color: var(--border);
}

.ghost-button {
  color: var(--muted);
  background: transparent;
  border-color: var(--border);
}

.danger-button {
  color: #fff;
  background: var(--danger);
}

.primary-button:hover,
.secondary-button:hover,
.ghost-button:hover,
.danger-button:hover {
  transform: translateY(-1px);
}

.toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  margin-bottom: 22px;
}

.toolbar h1 {
  font-size: clamp(2rem, 5vw, 3.4rem);
}

select,
input,
textarea {
  width: 100%;
  min-height: 42px;
  padding: 9px 11px;
  color: var(--text);
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  outline: none;
}

textarea {
  resize: vertical;
}

select:focus,
input:focus,
textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 18%, transparent);
}

.feed-list {
  display: grid;
  gap: 16px;
}

.post {
  padding: 18px;
  border-left: 4px solid var(--folder-color, var(--border));
  transition: opacity .22s ease, transform .22s ease;
}

.post.is-hiding {
  opacity: 0;
  transform: translateY(-8px);
}

.post-head {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr) auto;
  gap: 12px;
  align-items: start;
  margin-bottom: 14px;
}

.post-title {
  margin: 0;
  font-size: 1rem;
  font-weight: 800;
}

.post-time,
.folder-badge {
  color: var(--muted);
  font-size: .86rem;
}

.post-content {
  overflow-wrap: anywhere;
}

.post-content img,
.media-image {
  display: block;
  width: 100%;
  max-height: 620px;
  object-fit: contain;
  margin-top: 12px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--bg);
}

.video-placeholder {
  display: grid;
  gap: 12px;
  margin-top: 14px;
  padding: 18px;
  border: 1px dashed var(--border);
  border-radius: var(--radius);
  background: color-mix(in srgb, var(--accent) 8%, var(--card-bg));
}

.post-actions {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-top: 14px;
}

.empty-state {
  padding: clamp(24px, 5vw, 48px);
  text-align: center;
}

.debug {
  white-space: pre-wrap;
  text-align: left;
  padding: 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg);
  overflow: auto;
}

.settings-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 18px;
}

.panel {
  padding: 20px;
}

.panel.wide {
  grid-column: 1 / -1;
}

.section-head {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: center;
}

.stack,
.grid-form,
.settings-form {
  display: grid;
  gap: 12px;
  margin-bottom: 18px;
}

.grid-form {
  grid-template-columns: minmax(0, 1fr) 120px auto;
  align-items: end;
}

.settings-form {
  grid-template-columns: repeat(4, minmax(0, 1fr));
  align-items: end;
}

label {
  display: grid;
  gap: 6px;
  color: var(--muted);
  font-size: .9rem;
  font-weight: 700;
}

.toggle {
  grid-template-columns: auto minmax(0, 1fr);
  align-items: center;
  min-height: 42px;
}

.toggle input {
  width: 20px;
  min-height: 20px;
}

.item-list,
.result-list {
  display: grid;
  gap: 10px;
}

.item-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 12px;
  align-items: center;
  padding: 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: color-mix(in srgb, var(--bg) 45%, var(--card-bg));
}

.item-row strong,
.item-row span {
  min-width: 0;
  overflow-wrap: anywhere;
}

.item-actions {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.item-actions select {
  width: min(220px, 100%);
}

.item-actions input {
  width: min(180px, 100%);
}

.folder-dot {
  display: inline-block;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--dot-color, var(--accent));
  margin-right: 8px;
  vertical-align: -1px;
}

.status-ok {
  color: var(--success);
}

.status-error {
  color: var(--danger);
}

.public-link {
  margin-bottom: 0;
  overflow-wrap: anywhere;
}

.toast {
  position: fixed;
  right: 18px;
  bottom: 18px;
  width: min(360px, calc(100% - 36px));
  padding: 12px 14px;
  color: #fff;
  background: #111827;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  transform: translateY(16px);
  opacity: 0;
  pointer-events: none;
  transition: opacity .2s ease, transform .2s ease;
}

.toast.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 860px) {
  body {
    font-family: var(--mobile-font), system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Arial, sans-serif;
    font-size: var(--mobile-text-size);
  }

  .home-hero,
  .settings-grid,
  .settings-form {
    grid-template-columns: 1fr;
  }

  .grid-form {
    grid-template-columns: 1fr;
  }

  .toolbar,
  .section-head {
    align-items: stretch;
    flex-direction: column;
  }

  .toolbar-actions,
  .nav {
    justify-content: flex-start;
  }

  .post-head {
    grid-template-columns: 44px minmax(0, 1fr);
  }

  .post-head .danger-button {
    grid-column: 1 / -1;
    width: 100%;
  }

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

  .item-actions {
    justify-content: flex-start;
  }
}

@media (max-width: 520px) {
  .topbar {
    align-items: flex-start;
    flex-direction: column;
  }

  .shell {
    width: min(100% - 20px, 1120px);
    padding-top: 22px;
  }

  .primary-button,
  .secondary-button,
  .ghost-button,
  .danger-button {
    width: 100%;
  }
}