/* Research Project Hub — reference-hybrid (Linear/Arc density) */

.rph-shell {
  display: flex;
  flex-direction: column;
  min-height: calc(100vh - 40px);
  background: var(--bg-page);
  color: var(--text);
}

.rph-main {
  flex: 1;
  min-width: 0;
  overflow-y: auto;
}

.rph-screen-list {
  width: 100%;
}

.rph-list-stack {
  max-width: 1320px;
  margin: 0 auto;
  padding: 6px 16px 20px;
  box-sizing: border-box;
}

.rph-screen {
  max-width: 1320px;
  margin: 0 auto;
  padding: 6px 16px 24px;
  box-sizing: border-box;
}

/* Row 1 — Page title + primary action */
.rph-page-head {
  margin-bottom: 8px;
}

.rph-page-head__title-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.rph-close-btn {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0;
  border: 1px solid color-mix(in srgb, var(--text-muted) 16%, transparent);
  border-radius: 8px;
  background: transparent;
  color: var(--text-muted);
  font-size: 0.9rem;
  line-height: 1;
  cursor: pointer;
  flex-shrink: 0;
  transition: background 0.12s, color 0.12s, border-color 0.12s;
}

.rph-close-btn:hover {
  background: color-mix(in srgb, var(--text) 5%, transparent);
  color: var(--text);
  border-color: color-mix(in srgb, var(--text-muted) 28%, transparent);
}

.rph-page-head__titles {
  min-width: 0;
  flex: 1;
}

.rph-page-head__title {
  margin: 0;
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.2;
}

.rph-page-head__subtitle {
  margin: 2px 0 0;
  font-size: 0.75rem;
  line-height: 1.35;
  opacity: 0.5;
}

/* Row 2 — Continue Working */
.rph-continue {
  margin-bottom: 10px;
}

.rph-continue__card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  min-height: 72px;
  max-height: 76px;
  padding: 12px 14px;
  border-radius: 10px;
  border: 1px solid var(--card-border);
  background: var(--card-bg);
  box-shadow: var(--card-shadow);
  transition: border-color 0.16s, box-shadow 0.16s;
}

.rph-continue__card:hover {
  border-color: color-mix(in srgb, var(--accent) 35%, var(--card-border));
  box-shadow: var(--card-shadow);
}

.rph-continue__body {
  display: flex;
  flex-direction: column;
  gap: 3px;
  min-width: 0;
  flex: 1;
}

.rph-continue__label {
  font-size: 0.64rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--text-muted);
  opacity: 0.55;
}

.rph-continue__title {
  font-size: 0.92rem;
  font-weight: 700;
  line-height: 1.25;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.rph-continue__meta {
  font-size: 0.71rem;
  line-height: 1.3;
  opacity: 0.48;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.rph-continue__btn {
  flex-shrink: 0;
  height: 34px;
  padding: 0 16px !important;
  font-size: 0.78rem !important;
}

/* Row 3 — Filter tabs */
.rph-page-head__filters {
  margin-bottom: 8px;
  border-bottom: 1px solid color-mix(in srgb, var(--text-muted) 8%, transparent);
}

.rph-tabs {
  display: flex;
  gap: 0;
  min-width: 0;
  overflow-x: auto;
}

.rph-tab {
  padding: 6px 12px 8px;
  border: 0;
  border-bottom: 2px solid transparent;
  border-radius: 0;
  background: transparent;
  color: var(--text-muted);
  font: inherit;
  font-size: 0.78rem;
  cursor: pointer;
  white-space: nowrap;
  transition: color 0.12s, border-color 0.12s;
}

.rph-tab:hover {
  color: var(--text);
  background: transparent;
}

.rph-tab--active {
  color: var(--text);
  border-bottom-color: #14b8a6;
  font-weight: 600;
  background: transparent;
}

/* Row 4 — Actions toolbar */
.rph-actions-bar {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 10px;
  min-height: 32px;
}

.rph-actions-bar__tools {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: nowrap;
  flex-shrink: 0;
  margin-left: auto;
}

.rph-search {
  flex: 0 1 260px;
  min-width: 160px;
  max-width: 300px;
}

.rph-search__input {
  width: 100%;
  height: 32px;
  padding: 0 10px;
  border-radius: 6px;
  border: 1px solid var(--card-border);
  background: var(--card-bg);
  color: var(--text);
  font: inherit;
  font-size: 0.8rem;
  box-sizing: border-box;
}

.rph-sort {
  height: 32px;
  padding: 0 8px;
  border-radius: 6px;
  border: 1px solid var(--card-border);
  background: var(--card-bg);
  color: var(--text);
  font: inherit;
  font-size: 0.78rem;
  box-sizing: border-box;
}

.rph-view-toggle {
  display: flex;
  height: 32px;
  border: 1px solid var(--card-border);
  border-radius: 6px;
  overflow: hidden;
}

.rph-view-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  padding: 0;
  border: 0;
  background: transparent;
  color: var(--text-muted);
  cursor: pointer;
  font-size: 0.82rem;
  box-sizing: border-box;
}

.rph-view-btn--active {
  background: var(--tab-bg);
  color: var(--text);
}

.rph-new-btn {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  flex-shrink: 0;
  height: 34px;
  padding: 0 14px;
  font-size: 0.8rem;
  font-weight: 600;
  border-radius: 8px;
  box-sizing: border-box;
  margin-top: 2px;
}

/* Grid */
.rph-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

@media (min-width: 900px) {
  .rph-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 1100px) {
  .rph-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

.rph-grid--list {
  grid-template-columns: 1fr;
}

.rph-grid--list .rph-card__body {
  display: grid;
  grid-template-columns: auto 1fr auto;
  grid-template-rows: auto auto auto;
  gap: 2px 12px;
  align-items: center;
}

.rph-grid--list .rph-card__head {
  grid-column: 1 / 3;
}

.rph-grid--list .rph-card__desc {
  grid-column: 2;
  margin: 0;
  -webkit-line-clamp: 1;
}

.rph-grid--list .rph-card__pills {
  grid-column: 2;
  margin: 0;
}

.rph-grid--list .rph-card__meta {
  grid-column: 2 / 4;
  margin: 0;
}

/* Project cards */
.rph-grid:not(.rph-grid--list) .rph-card {
  height: 172px;
  min-height: 172px;
  max-height: 172px;
  display: flex;
  flex-direction: column;
}

.rph-grid:not(.rph-grid--list) .rph-card__body {
  flex: 1;
  display: flex;
  flex-direction: column;
}

.rph-grid:not(.rph-grid--list) .rph-card__meta {
  margin-top: auto;
}

.rph-card {
  position: relative;
  border-radius: 10px;
  border: 1px solid var(--card-border);
  background: var(--card-bg);
  box-shadow: var(--card-shadow);
  transition: border-color 0.16s, box-shadow 0.16s, transform 0.16s;
}

.rph-card:hover {
  border-color: color-mix(in srgb, var(--accent) 35%, var(--card-border));
  box-shadow: var(--card-shadow);
  transform: translateY(-2px);
}

.rph-card__delete {
  position: absolute;
  top: 8px;
  right: 34px;
  z-index: 2;
  width: 22px;
  height: 22px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 0;
  border-radius: 4px;
  background: transparent;
  color: #f87171;
  font-size: 0.72rem;
  font-weight: 700;
  cursor: pointer;
  opacity: 0;
  transition: opacity 0.12s, background 0.12s;
}

.rph-card:hover .rph-card__delete {
  opacity: 0.85;
}

.rph-card__delete:hover {
  opacity: 1;
  background: rgba(248, 113, 113, 0.12);
}

.rph-card__star {
  position: absolute;
  top: 8px;
  right: 8px;
  z-index: 2;
  width: 22px;
  height: 22px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 0;
  border-radius: 4px;
  background: transparent;
  color: var(--text-muted);
  font-size: 0.82rem;
  cursor: pointer;
  opacity: 0.3;
  transition: opacity 0.12s, color 0.12s;
}

.rph-card:hover .rph-card__star,
.rph-card__star--on {
  opacity: 1;
}

.rph-card__star--on {
  color: #fbbf24;
}

.rph-card__body {
  display: block;
  width: 100%;
  padding: 14px 14px 12px;
  border: 0;
  background: transparent;
  color: inherit;
  text-align: left;
  cursor: pointer;
  font: inherit;
  flex: 1;
  min-height: 0;
  overflow: hidden;
}

.rph-card__head {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  margin-bottom: 8px;
  padding-right: 18px;
}

.rph-card__icon {
  flex-shrink: 0;
  width: 36px;
  height: 36px;
  border-radius: 9px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  line-height: 1;
  border: 1px solid color-mix(in srgb, var(--text) 6%, transparent);
}

.rph-card--accent-0 .rph-card__icon {
  background: rgba(20, 184, 166, 0.1);
  border-color: rgba(20, 184, 166, 0.15);
  color: rgba(94, 234, 212, 0.75);
}
.rph-card--accent-1 .rph-card__icon {
  background: rgba(99, 102, 241, 0.1);
  border-color: rgba(99, 102, 241, 0.15);
  color: rgba(165, 180, 252, 0.75);
}
.rph-card--accent-2 .rph-card__icon {
  background: rgba(139, 92, 246, 0.1);
  border-color: rgba(139, 92, 246, 0.15);
  color: rgba(196, 181, 253, 0.75);
}
.rph-card--accent-3 .rph-card__icon {
  background: rgba(14, 165, 233, 0.1);
  border-color: rgba(14, 165, 233, 0.15);
  color: rgba(125, 211, 252, 0.75);
}
.rph-card--accent-4 .rph-card__icon {
  background: rgba(245, 158, 11, 0.08);
  border-color: rgba(245, 158, 11, 0.12);
  color: rgba(252, 211, 77, 0.7);
}
.rph-card--accent-5 .rph-card__icon {
  background: rgba(236, 72, 153, 0.08);
  border-color: rgba(236, 72, 153, 0.12);
  color: rgba(249, 168, 212, 0.7);
}

.rph-card__title {
  margin: 0;
  flex: 1;
  min-width: 0;
  font-size: 0.94rem;
  font-weight: 700;
  line-height: 1.35;
  letter-spacing: -0.015em;
  padding-top: 2px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.rph-card__desc {
  margin: 0 0 8px;
  padding-left: 46px;
  font-size: 0.78rem;
  color: var(--text-muted);
  line-height: 1.45;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  opacity: 0.88;
}

.rph-card__desc--placeholder {
  font-size: 0.72rem;
  font-style: italic;
  opacity: 0.32;
  -webkit-line-clamp: 1;
}

.rph-card__pills {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  margin: 0 0 6px;
  padding-left: 46px;
}

.rph-pill {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 0.65rem;
  font-weight: 500;
  letter-spacing: 0.01em;
  background: color-mix(in srgb, var(--text) 3%, transparent);
  border: 1px solid color-mix(in srgb, var(--text-muted) 12%, transparent);
}

.rph-pill--design {
  border-color: color-mix(in srgb, var(--text-muted) 14%, transparent);
  color: color-mix(in srgb, var(--text-muted) 62%, transparent);
}
.rph-pill--stats {
  border-color: color-mix(in srgb, var(--text-muted) 14%, transparent);
  color: color-mix(in srgb, var(--text-muted) 62%, transparent);
}
.rph-pill--report {
  border-color: color-mix(in srgb, var(--text-muted) 14%, transparent);
  color: color-mix(in srgb, var(--text-muted) 62%, transparent);
}

.rph-card__meta {
  margin: 0;
  padding-left: 46px;
  font-size: 0.68rem;
  opacity: 0.5;
}

.rph-empty {
  text-align: center;
  padding: 32px 20px;
  border-radius: 10px;
  border: 1px dashed color-mix(in srgb, var(--text-muted) 18%, transparent);
}

.rph-empty__title {
  margin: 0 0 6px;
  font-size: 0.98rem;
}

.rph-empty__body {
  margin: 0;
  font-size: 0.85rem;
}

.rph-no-results {
  grid-column: 1 / -1;
  padding: 16px;
  text-align: center;
  font-size: 0.85rem;
}

/* Project Home */
.rph-project-top {
  display: flex;
  justify-content: flex-end;
  margin-bottom: 12px;
}

.rph-summary {
  margin-bottom: 14px;
  padding: 12px 14px;
  border-radius: 10px;
  border: 1px solid var(--card-border);
  background: var(--card-bg);
}

.rph-summary__head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 6px;
}

.rph-summary__title {
  margin: 0;
  font-size: 1.35rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.25;
  flex: 1;
  min-width: 0;
}

.rph-summary__menu {
  position: relative;
  flex-shrink: 0;
}

.rph-menu-btn {
  width: 30px;
  height: 30px;
  border: 1px solid color-mix(in srgb, var(--text-muted) 15%, transparent);
  border-radius: 6px;
  background: transparent;
  color: var(--text-muted);
  font-size: 0.95rem;
  cursor: pointer;
}

.rph-menu-dropdown {
  position: absolute;
  top: calc(100% + 4px);
  right: 0;
  min-width: 140px;
  padding: 4px;
  border-radius: 8px;
  border: 1px solid color-mix(in srgb, var(--text-muted) 15%, transparent);
  background: var(--card-bg, var(--bg-page));
  box-shadow: var(--card-shadow);
  z-index: 10;
}

.rph-menu-dropdown__item {
  display: block;
  width: 100%;
  padding: 7px 10px;
  border: 0;
  border-radius: 5px;
  background: transparent;
  color: var(--text);
  font: inherit;
  font-size: 0.84rem;
  text-align: left;
  cursor: pointer;
}

.rph-menu-dropdown__item:hover {
  background: rgba(20, 184, 166, 0.08);
}

.rph-menu-dropdown__item--danger {
  color: #f87171;
}

.rph-menu-dropdown__item--danger:hover {
  background: rgba(248, 113, 113, 0.1);
}

.rph-summary__description-label {
  display: block;
  margin: 0 0 4px;
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  opacity: 0.7;
}

.rph-summary__description {
  width: 100%;
  box-sizing: border-box;
  padding: 6px 10px;
  border-radius: 7px;
  border: 1px solid var(--card-border);
  background: var(--btn-secondary-bg);
  color: var(--text);
  font: inherit;
  font-size: 0.84rem;
  line-height: 1.35;
  resize: none;
  min-height: 2.6em;
  max-height: 3.2em;
  overflow-y: auto;
}

.rph-summary__description:focus {
  outline: none;
  border-color: rgba(20, 184, 166, 0.3);
}

.rph-summary__modified {
  margin: 6px 0 0;
  font-size: 0.76rem;
  opacity: 0.55;
}

.rph-section-title {
  margin: 0 0 10px;
  font-size: 0.62rem;
  font-weight: 600;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: var(--text-muted);
  opacity: 0.65;
}

.rph-workspace-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 10px;
}

.rph-workspace-card {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 5px;
  padding: 16px 18px;
  border-radius: 10px;
  border: 1px solid var(--card-border);
  background: var(--card-bg);
  color: var(--text);
  text-align: left;
  cursor: pointer;
  font: inherit;
  transition: border-color 0.14s, box-shadow 0.14s, transform 0.14s;
}

.rph-workspace-card:hover:not(:disabled) {
  border-color: color-mix(in srgb, #0f766e 35%, var(--card-border));
  box-shadow: var(--card-shadow);
  transform: translateY(-1px);
}

.rph-workspace-card:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.rph-workspace-card__icon {
  font-size: 1rem;
  opacity: 0.6;
  color: #14b8a6;
}

.rph-workspace-card__title {
  font-size: 0.94rem;
  font-weight: 700;
}

.rph-workspace-card__desc {
  font-size: 0.8rem;
  color: var(--text-muted);
  line-height: 1.4;
  opacity: 0.8;
}

@media (max-width: 768px) {
  .rph-shell {
    min-height: 0;
  }

  .rph-list-stack {
    padding: 6px 10px 20px;
  }

  .rph-page-head__title-row {
    flex-wrap: wrap;
    gap: 10px;
  }

  .rph-new-btn {
    width: 100%;
    justify-content: center;
    margin-top: 0;
  }

  .rph-actions-bar {
    flex-wrap: wrap;
  }

  .rph-search {
    flex: 1 1 100%;
    max-width: none;
  }

  .rph-actions-bar__tools {
    width: 100%;
    justify-content: flex-end;
    margin-left: 0;
  }

  .rph-continue__card {
    flex-wrap: wrap;
    max-height: none;
    min-height: 64px;
  }

  .rph-continue__meta {
    white-space: normal;
  }

  .rph-card__desc,
  .rph-card__pills,
  .rph-card__meta {
    padding-left: 0;
  }
}

/* Light / dark contrast — research hub text & chips */
html[data-theme="light"] .rph-product-header__title,
html[data-theme="light"] .rph-page-head__title,
html[data-theme="light"] .rph-card__title,
html[data-theme="light"] .rph-summary__title {
  color: #111827;
}

html[data-theme="light"] .rph-card__desc {
  color: #1f2937;
  opacity: 1;
}

html[data-theme="light"] .rph-card__desc--placeholder {
  color: #374151;
  opacity: 1;
}

html[data-theme="light"] .rph-card__meta {
  color: #4b5563;
  opacity: 1;
}

html[data-theme="light"] .rph-pill,
html[data-theme="light"] .rph-pill--design,
html[data-theme="light"] .rph-pill--stats,
html[data-theme="light"] .rph-pill--report {
  color: #374151;
  background: color-mix(in srgb, #111827 6%, var(--card-bg));
  border-color: color-mix(in srgb, #374151 28%, var(--card-border));
}

html[data-theme="light"] .rph-tab {
  color: #4b5563;
}

html[data-theme="light"] .rph-tab--active {
  color: #111827;
}

html[data-theme="light"] .rph-section-title {
  color: #374151;
  opacity: 1;
}

html[data-theme="light"] .rph-search__input,
html[data-theme="light"] .rph-sort {
  color: #111827;
}

html[data-theme="light"] .rph-search__input::placeholder {
  color: #6b7280;
}

html[data-theme="light"] .rph-card--accent-0 .rph-card__icon {
  color: #0f766e;
  background: rgba(15, 118, 110, 0.12);
  border-color: rgba(15, 118, 110, 0.2);
}

html[data-theme="light"] .rph-card--accent-1 .rph-card__icon {
  color: #4f46e5;
  background: rgba(79, 70, 229, 0.1);
  border-color: rgba(79, 70, 229, 0.2);
}

html[data-theme="light"] .rph-card--accent-2 .rph-card__icon {
  color: #7c3aed;
  background: rgba(124, 58, 237, 0.1);
  border-color: rgba(124, 58, 237, 0.2);
}

html[data-theme="light"] .rph-card--accent-3 .rph-card__icon {
  color: #0284c7;
  background: rgba(2, 132, 199, 0.1);
  border-color: rgba(2, 132, 199, 0.2);
}

html[data-theme="light"] .rph-card--accent-4 .rph-card__icon {
  color: #d97706;
  background: rgba(217, 119, 6, 0.12);
  border-color: rgba(217, 119, 6, 0.22);
}

html[data-theme="light"] .rph-card--accent-5 .rph-card__icon {
  color: #db2777;
  background: rgba(219, 39, 119, 0.1);
  border-color: rgba(219, 39, 119, 0.2);
}

html[data-theme="dark"] .rph-card__desc--placeholder {
  opacity: 0.42;
}

html[data-theme="dark"] .rph-card__meta {
  opacity: 0.62;
}