:root {
  --bg: #0d1117;
  --bg-elevated: #161b22;
  --bg-panel: #1d2430;
  --bg-soft: #11161d;
  --text: #e6edf3;
  --text-muted: #8b98a5;
  --text-soft: #a9b5c3;
  --accent: #1d9bf0;
  --accent-strong: #4cb5ff;
  --success: #00ba7c;
  --warning: #ffb000;
  --danger: #ff5b6e;
  --border: rgba(255, 255, 255, 0.08);
  --shadow: 0 24px 60px rgba(0, 0, 0, 0.35);
  --radius-xl: 24px;
  --radius-lg: 18px;
  --radius-md: 14px;
  --radius-sm: 12px;
}

* {
  box-sizing: border-box;
}

html {
  color-scheme: dark;
}

body {
  margin: 0;
  font-family: "Segoe UI", -apple-system, BlinkMacSystemFont, "Helvetica Neue", sans-serif;
  background:
    radial-gradient(circle at top left, rgba(29, 155, 240, 0.14), transparent 22%),
    radial-gradient(circle at top right, rgba(0, 186, 124, 0.08), transparent 18%),
    linear-gradient(180deg, #0b0f14 0%, #0d1117 55%, #0a0e13 100%);
  color: var(--text);
  min-height: 100vh;
}

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

img {
  display: block;
  max-width: 100%;
}

button,
input,
textarea {
  font: inherit;
}

input,
textarea {
  width: 100%;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  padding: 0.9rem 1rem;
}

input:focus,
textarea:focus,
button:focus,
a:focus {
  outline: 2px solid rgba(29, 155, 240, 0.45);
  outline-offset: 2px;
}

textarea {
  resize: vertical;
  min-height: 3.5rem;
}

button {
  border: 0;
  cursor: pointer;
}

.app-shell {
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(18px);
  background: rgba(10, 14, 19, 0.72);
  border-bottom: 1px solid var(--border);
}

.app-topbar {
  max-width: 1240px;
  margin: 0 auto;
  padding: 1rem 1.25rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
}

.brand-lockup {
  display: flex;
  align-items: center;
  gap: 0.9rem;
}

.brand-mark {
  width: 2.7rem;
  height: 2.7rem;
  display: inline-grid;
  place-items: center;
  border-radius: 18px;
  background: linear-gradient(145deg, rgba(29, 155, 240, 0.25), rgba(29, 155, 240, 0.06));
  border: 1px solid rgba(76, 181, 255, 0.28);
  color: #fff;
  font-weight: 700;
  letter-spacing: 0.06em;
}

.brand-title {
  font-size: 1.05rem;
  font-weight: 700;
}

.brand-subtitle {
  margin: 0.2rem 0 0;
  color: var(--text-muted);
  font-size: 0.9rem;
}

.top-nav {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.top-nav a {
  color: var(--text-soft);
  padding: 0.7rem 0.95rem;
  border-radius: 999px;
  transition: background 140ms ease, color 140ms ease;
}

.top-nav a:hover {
  background: rgba(255, 255, 255, 0.04);
  color: var(--text);
}

.page-shell {
  max-width: 1240px;
  margin: 0 auto;
  padding: 1.5rem 1.25rem 4rem;
}

.hero-panel,
.gallery-panel,
.compose-card,
.preview-card,
.run-card,
.empty-card,
.source-panel,
.login-card {
  background: linear-gradient(180deg, rgba(29, 36, 48, 0.94), rgba(17, 22, 29, 0.96));
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow);
}

.hero-panel {
  padding: 1.4rem;
  display: flex;
  justify-content: space-between;
  align-items: end;
  gap: 1.25rem;
  margin-bottom: 1.4rem;
}

.compact-hero {
  min-height: 0;
}

.hero-copy h1,
.detail-hero h1 {
  margin: 0.35rem 0 0.55rem;
  font-size: clamp(1.8rem, 4vw, 3rem);
  line-height: 1.02;
  letter-spacing: -0.04em;
}

.hero-copy p,
.detail-meta,
.login-copy {
  margin: 0;
  color: var(--text-soft);
  max-width: 60ch;
  line-height: 1.55;
}

.hero-action {
  min-width: 220px;
}

.eyebrow {
  display: inline-block;
  color: var(--accent-strong);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.72rem;
  font-weight: 700;
}

.tab-shell {
  display: grid;
  gap: 1rem;
}

.tab-bar {
  display: flex;
  gap: 0.6rem;
  overflow-x: auto;
  padding-bottom: 0.2rem;
}

.tab-button {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.9rem 1.1rem;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.03);
  color: var(--text-soft);
  border: 1px solid var(--border);
}

.tab-button span {
  display: inline-grid;
  place-items: center;
  min-width: 1.7rem;
  height: 1.7rem;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.07);
  font-size: 0.86rem;
}

.tab-button.is-active {
  background: rgba(29, 155, 240, 0.16);
  color: #fff;
  border-color: rgba(76, 181, 255, 0.35);
}

.tab-panel {
  display: none;
}

.tab-panel.is-active {
  display: block;
}

.run-grid,
.option-grid,
.settings-grid {
  display: grid;
  gap: 1rem;
}

.run-grid {
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.run-card,
.empty-card {
  padding: 1.15rem;
}

.run-card h2,
.empty-card h2,
.section-heading h2,
.compose-card h2 {
  margin: 0.25rem 0 0;
  font-size: 1.2rem;
  line-height: 1.2;
}

.run-card-top,
.preview-card-top,
.dialog-header,
.detail-hero,
.section-heading,
.card-actions,
.dialog-actions,
.info-row,
.compose-layout,
.confirm-grid {
  display: flex;
  gap: 1rem;
}

.run-card-top,
.preview-card-top,
.dialog-header,
.detail-hero,
.section-heading,
.info-row {
  justify-content: space-between;
  align-items: start;
}

.run-day,
.option-index {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.84rem;
}

.run-metrics {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.8rem;
  margin: 1rem 0;
}

.metric-label {
  display: block;
  font-size: 0.76rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  margin-bottom: 0.35rem;
}

.run-meta,
.preview-summary {
  color: var(--text-soft);
}

.primary-button,
.secondary-button,
.primary-link,
.button-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2.9rem;
  padding: 0.85rem 1.1rem;
  border-radius: 999px;
  font-weight: 600;
  white-space: nowrap;
}

.primary-button,
.primary-link {
  background: linear-gradient(180deg, #2da9ff 0%, #1d9bf0 100%);
  color: #fff;
}

.secondary-button,
.button-link {
  background: rgba(255, 255, 255, 0.05);
  color: var(--text);
  border: 1px solid var(--border);
}

.primary-button:hover,
.primary-link:hover {
  filter: brightness(1.06);
}

.secondary-button:hover,
.button-link:hover {
  background: rgba(255, 255, 255, 0.08);
}

.status-pill,
.type-pill {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2rem;
  padding: 0.35rem 0.75rem;
  border-radius: 999px;
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: capitalize;
  letter-spacing: 0.02em;
}

.status-completed,
.status-posted {
  background: rgba(0, 186, 124, 0.15);
  color: #57f2b9;
}

.status-running {
  background: rgba(255, 176, 0, 0.15);
  color: #ffd06a;
}

.status-failed {
  background: rgba(255, 91, 110, 0.14);
  color: #ff8594;
}

.status-draft {
  background: rgba(29, 155, 240, 0.15);
  color: #8dd0ff;
}

.type-pill {
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-soft);
}

.detail-hero,
.section-heading {
  margin-bottom: 1rem;
}

.hero-side-stat {
  display: flex;
  align-items: center;
}

.subtle-link {
  color: var(--accent-strong);
  font-size: 0.94rem;
}

.gallery-panel,
.source-panel {
  padding: 1rem;
  margin-bottom: 1rem;
}

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 0.85rem;
}

.gallery-item,
.preview-image,
.confirm-image {
  overflow: hidden;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.03);
}

.gallery-item img,
.preview-image img,
.confirm-image img,
.thumbnail-row img,
.thumbnail-option img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.gallery-item {
  aspect-ratio: 4 / 3;
}

.empty-inline,
.thumbnail-empty,
.preview-image-empty {
  display: grid;
  place-items: center;
  min-height: 120px;
  padding: 1rem;
  border: 1px dashed rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-lg);
  color: var(--text-muted);
  background: rgba(255, 255, 255, 0.02);
}

.option-grid {
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.preview-card {
  padding: 1rem;
}

.preview-card h3 {
  margin: 0.3rem 0 0;
  font-size: 1.15rem;
}

.preview-card-meta {
  display: flex;
  gap: 0.5rem;
  align-items: center;
  flex-wrap: wrap;
}

.preview-hook {
  margin: 0.9rem 0 0.45rem;
  font-size: 1.02rem;
  font-weight: 600;
}

.preview-body {
  color: var(--text-soft);
  min-height: 4.7rem;
}

.preview-image {
  margin: 0.8rem 0 1rem;
  aspect-ratio: 16 / 9;
}

.card-actions,
.dialog-actions,
.stack-actions {
  flex-wrap: wrap;
  align-items: center;
}

.dialog-actions form {
  margin: 0;
}

.app-dialog {
  width: min(820px, calc(100vw - 1.5rem));
  padding: 0;
  background: transparent;
  border: 0;
}

.app-dialog::backdrop {
  background: rgba(4, 8, 12, 0.72);
  backdrop-filter: blur(10px);
}

.dialog-shell {
  background: linear-gradient(180deg, #151b23 0%, #0f141b 100%);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 28px;
  padding: 1.15rem;
  box-shadow: var(--shadow);
}

.compact-shell {
  max-width: 560px;
  margin: 0 auto;
}

.dialog-header h2 {
  margin: 0.2rem 0 0;
}

.icon-button {
  width: 2.6rem;
  height: 2.6rem;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.05);
  color: var(--text);
  font-size: 1.2rem;
}

.x-preview-card {
  border: 1px solid var(--border);
  border-radius: 22px;
  padding: 1rem;
  background: radial-gradient(circle at top right, rgba(29, 155, 240, 0.09), transparent 30%), var(--bg-soft);
}

.x-preview-top {
  display: flex;
  gap: 0.8rem;
  align-items: start;
  margin-bottom: 0.8rem;
}

.x-preview-top p {
  margin: 0.15rem 0 0;
  color: var(--text-muted);
}

.avatar-dot {
  width: 2.75rem;
  height: 2.75rem;
  border-radius: 999px;
  background: linear-gradient(180deg, #1d9bf0, #12649b);
}

.x-preview-text {
  white-space: pre-wrap;
  line-height: 1.55;
  color: var(--text);
}

.x-preview-media {
  margin-top: 1rem;
  overflow: hidden;
  border-radius: 20px;
  border: 1px solid var(--border);
}

.detail-stack,
.settings-list,
.editor-form,
.source-list,
.source-panel-list {
  display: grid;
  gap: 0.85rem;
}

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

.source-accordion {
  margin-top: 1rem;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  overflow: hidden;
  background: rgba(255, 255, 255, 0.02);
}

.source-accordion summary {
  list-style: none;
  cursor: pointer;
  padding: 0.95rem 1rem;
  font-weight: 600;
}

.source-accordion summary::-webkit-details-marker {
  display: none;
}

.source-list,
.source-panel-list {
  padding: 0 1rem 1rem;
}

.source-list a,
.source-card a {
  color: var(--accent-strong);
}

.thumbnail-picker p {
  margin: 0 0 0.7rem;
  color: var(--text-soft);
}

.thumbnail-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(112px, 1fr));
  gap: 0.75rem;
}

.thumbnail-option {
  display: block;
  cursor: pointer;
}

.thumbnail-option input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.thumbnail-option img {
  aspect-ratio: 1 / 1;
  border-radius: 16px;
  border: 2px solid transparent;
}

.thumbnail-option input:checked + img {
  border-color: var(--accent-strong);
  box-shadow: 0 0 0 4px rgba(29, 155, 240, 0.16);
}

.confirm-grid {
  align-items: start;
  margin: 1rem 0;
}

.confirm-copy {
  flex: 1.2;
}

.confirm-side {
  flex: 0.8;
  display: grid;
  gap: 0.85rem;
}

.composer-text {
  white-space: pre-wrap;
  min-height: 14rem;
}

.source-card {
  padding: 1rem;
  border: 1px solid var(--border);
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.02);
}

.source-card p {
  margin: 0.35rem 0 0;
  color: var(--text-muted);
}

.thumbnail-row {
  display: flex;
  gap: 0.6rem;
  margin-top: 0.8rem;
}

.thumbnail-row img {
  width: 92px;
  height: 68px;
  border-radius: 14px;
  border: 1px solid var(--border);
}

.compose-layout {
  align-items: start;
}

.compose-main {
  flex: 1.1;
  display: grid;
  gap: 1rem;
}

.compose-side {
  width: min(100%, 340px);
}

.compose-card {
  padding: 1.1rem;
}

.sticky-card {
  position: sticky;
  top: 6.2rem;
}

.tweet-card {
  margin: 0;
}

.login-page {
  display: grid;
  place-items: center;
  min-height: 100vh;
  padding: 1.5rem;
}

.login-card {
  width: min(460px, 100%);
  padding: 1.4rem;
  display: grid;
  gap: 1rem;
}

.login-card h1 {
  margin: 0;
  font-size: clamp(2rem, 6vw, 2.8rem);
  line-height: 1;
  letter-spacing: -0.04em;
}

.error-text {
  color: #ff8b98;
  margin: 0;
}

.settings-grid {
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.hidden-copy {
  position: absolute;
  left: -9999px;
  top: -9999px;
}

@media (max-width: 920px) {
  .hero-panel,
  .detail-hero,
  .compose-layout,
  .confirm-grid,
  .app-topbar {
    flex-direction: column;
    align-items: stretch;
  }

  .compose-side {
    width: 100%;
  }

  .sticky-card {
    position: static;
  }
}

@media (max-width: 680px) {
  .page-shell {
    padding: 1rem 0.85rem 3rem;
  }

  .app-topbar {
    padding: 0.9rem 0.85rem;
  }

  .top-nav {
    width: 100%;
  }

  .top-nav a {
    flex: 1;
    text-align: center;
  }

  .hero-panel,
  .gallery-panel,
  .preview-card,
  .run-card,
  .empty-card,
  .compose-card,
  .login-card,
  .source-panel {
    border-radius: 20px;
  }

  .app-dialog {
    width: 100vw;
    max-width: none;
    height: 100vh;
    margin: 0;
  }

  .dialog-shell {
    min-height: 100vh;
    border-radius: 0;
    padding-bottom: 2rem;
  }

  .thumbnail-grid,
  .gallery-grid,
  .run-grid,
  .option-grid {
    grid-template-columns: 1fr;
  }

  .run-metrics {
    grid-template-columns: 1fr 1fr;
  }

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

  .dialog-actions form,
  .hero-action {
    width: 100%;
  }
}