:root {
  --bg-body: #f5f7fb;
  --bg-hero-start: #eef4ff;
  --bg-hero-end: #ffffff;
  --bg-surface: #ffffff;
  --bg-muted: #f0f3ff;
  --bg-accent: #ede9fe;
  --border-soft: #e2e8f9;
  --border-strong: #c3d2ff;
  --brand-primary: #4f46e5;
  --brand-secondary: #9333ea;
  --brand-tertiary: #38bdf8;
  --text-primary: #1f2937;
  --text-secondary: #4b5563;
  --text-muted: #6b7280;
  --shadow-soft: 0 12px 30px rgba(15, 23, 42, 0.06);
  --shadow-medium: 0 18px 45px rgba(79, 70, 229, 0.12);
  --radius-xl: 28px;
  --radius-lg: 22px;
  --radius-md: 16px;
  --radius-sm: 10px;
  --transition-base: 0.24s cubic-bezier(0.4, 0, 0.2, 1);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: 'Inter', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', Helvetica, Arial, sans-serif;
  background: radial-gradient(circle at 20% 20%, rgba(79, 70, 229, 0.08), transparent 55%), radial-gradient(circle at 80% 10%, rgba(56, 189, 248, 0.08), transparent 45%), var(--bg-body);
  color: var(--text-primary);
  line-height: 1.6;
}

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

button {
  font-family: inherit;
}

.hero {
  position: relative;
  padding: 80px 24px 120px;
  background: radial-gradient(circle at 15% 15%, rgba(79, 70, 229, 0.1), transparent 60%), linear-gradient(135deg, var(--bg-hero-start), var(--bg-hero-end));
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: url("data:image/svg+xml,%3Csvg width='360' height='360' viewBox='0 0 360 360' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M0 90c60 0 90-90 150-90s90 90 150 90 90 90 150 90 90 90 150 90' stroke='rgba(79,70,229,0.08)' stroke-width='2' fill='none'/%3E%3C/svg%3E") center/cover;
  opacity: 0.65;
}

.hero__content {
  position: relative;
  z-index: 1;
  width: min(1180px, 100%);
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 42px;
}

.hero__branding {
  flex: 1 1 360px;
  max-width: 520px;
}

.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  border-radius: 999px;
  background: linear-gradient(135deg, rgba(79, 70, 229, 0.1), rgba(147, 51, 234, 0.08));
  border: 1px solid rgba(79, 70, 229, 0.2);
  color: var(--brand-primary);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.1em;
}

.hero__title {
  margin: 20px 0 18px;
  font-size: clamp(36px, 4.6vw, 48px);
  font-weight: 800;
  letter-spacing: 0.01em;
  color: var(--text-primary);
}

.hero__description {
  margin: 0;
  color: var(--text-secondary);
  font-size: 16px;
  line-height: 1.8;
}

.hero__stats {
  flex: 1 1 560px;
  min-width: 520px;
  display: grid;
  gap: 18px;
  grid-template-columns: repeat(2, minmax(240px, 1fr));
}

.stat-card {
  position: relative;
  padding: 22px 24px;
  border-radius: var(--radius-lg);
  background: var(--bg-surface);
  border: 1px solid rgba(79, 70, 229, 0.12);
  box-shadow: var(--shadow-soft);
  display: flex;
  flex-direction: column;
  gap: 12px;
  overflow: hidden;
}

.stat-card::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at top right, rgba(79, 70, 229, 0.08), transparent 60%);
  opacity: 0;
  transition: opacity var(--transition-base);
  z-index: -1;
}

.stat-card:hover::before {
  opacity: 1;
}

.stat-card__label {
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--text-muted);
}

.stat-card__value {
  font-size: 36px;
  font-weight: 700;
  color: var(--brand-primary);
}

.stat-card__hint {
  font-size: 14px;
  color: var(--text-secondary);
}

.stat-card--cta {
  border: 1px dashed rgba(79, 70, 229, 0.24);
  background: linear-gradient(135deg, rgba(249, 250, 255, 0.96), rgba(233, 242, 255, 0.9));
  grid-column: span 2;
}

.stat-card--cta .stat-card__value {
  color: var(--text-primary);
}

.stat-card__link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  width: fit-content;
  padding: 8px 14px;
  border-radius: 999px;
  background: rgba(79, 70, 229, 0.12);
  color: var(--brand-primary);
  font-size: 13px;
  font-weight: 600;
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.stat-card__link::after {
  content: "↘";
  font-size: 14px;
}

.stat-card__link:hover {
  transform: translateX(3px);
  box-shadow: 0 12px 26px rgba(79, 70, 229, 0.18);
}

.app {
  width: calc(100% - 32px);
  max-width: 1720px;
  margin: -90px auto 100px;
  display: grid;
  grid-template-columns: 260px minmax(0, 1fr);
  gap: 24px;
  position: relative;
  z-index: 5;
  align-items: start;
}

.sidebar {
  position: sticky;
  top: 36px;
  display: flex;
  flex-direction: column;
  gap: 24px;
  padding: 28px 24px;
  border-radius: var(--radius-xl);
  background: var(--bg-surface);
  border: 1px solid var(--border-soft);
  box-shadow: var(--shadow-soft);
}

.sidebar__header h2 {
  margin: 0 0 6px;
  font-size: 18px;
  font-weight: 700;
  color: var(--text-primary);
}

.sidebar__header p {
  margin: 0;
  color: var(--text-muted);
  font-size: 14px;
}

.category-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.category-button {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 16px;
  font-size: 15px;
  font-weight: 500;
  color: var(--text-primary);
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  background: #f5f7ff;
  cursor: pointer;
  transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base), background var(--transition-base);
}

.category-button:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 30px rgba(79, 70, 229, 0.12);
  border-color: rgba(79, 70, 229, 0.18);
}

.category-button.is-active {
  background: linear-gradient(135deg, rgba(79, 70, 229, 0.95), rgba(58, 132, 247, 0.9));
  color: #ffffff;
  box-shadow: var(--shadow-medium);
}

.category-button__badge {
  padding: 4px 10px;
  border-radius: 999px;
  background: rgba(79, 70, 229, 0.12);
  color: var(--brand-primary);
  font-size: 12px;
  font-weight: 600;
}

.category-button.is-active .category-button__badge {
  background: rgba(255, 255, 255, 0.2);
  color: #ffffff;
}

.content {
  padding: 36px 24px 42px;
  border-radius: var(--radius-xl);
  background: var(--bg-surface);
  border: 1px solid var(--border-soft);
  box-shadow: var(--shadow-soft);
  display: flex;
  flex-direction: column;
  gap: 26px;
}

.content__toolbar {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 24px;
  flex-wrap: wrap;
}

.toolbar__lead h2 {
  margin: 0;
  font-size: 22px;
  font-weight: 700;
}

.content__meta {
  margin: 8px 0 0;
  font-size: 14px;
  color: var(--text-muted);
}

.toolbar__actions {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
}

.content__filters {
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 14px 18px;
  border-radius: var(--radius-md);
  background: var(--bg-muted);
  border: 1px solid var(--border-soft);
}

.content__filters-label {
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.content__filters-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.quick-filter {
  padding: 8px 16px;
  border-radius: 999px;
  border: 1px solid rgba(191, 219, 254, 0.7);
  background: rgba(248, 250, 255, 0.88);
  color: #4338ca;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: transform var(--transition-base), box-shadow var(--transition-base), background var(--transition-base);
}

.quick-filter:hover {
  transform: translateY(-1px);
  box-shadow: 0 12px 24px rgba(99, 102, 241, 0.12);
}

.quick-filter.is-active {
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.95), rgba(102, 126, 234, 0.88));
  border-color: transparent;
  color: #ffffff;
  box-shadow: var(--shadow-medium);
}

.toolbar-search {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 10px 16px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-soft);
  background: var(--bg-muted);
}

.toolbar-search__icon {
  width: 18px;
  height: 18px;
  color: var(--brand-primary);
}

#search-input {
  border: none;
  outline: none;
  background: transparent;
  font-size: 14px;
  color: var(--text-primary);
  width: min(260px, 60vw);
}

#search-input::placeholder {
  color: var(--text-muted);
}

.toolbar__reset {
  padding: 10px 18px;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(99, 102, 241, 0.16);
  background: linear-gradient(135deg, rgba(236, 233, 255, 0.95), rgba(226, 241, 255, 0.95));
  color: #4338ca;
  font-weight: 600;
  cursor: pointer;
  transition: box-shadow var(--transition-base), transform var(--transition-base);
}

.toolbar__reset:hover {
  transform: translateY(-1px);
  box-shadow: 0 14px 28px rgba(99, 102, 241, 0.18);
}

.prompt-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 24px;
}

.prompt-card {
  position: relative;
  padding: 26px;
  border-radius: var(--radius-lg);
  background: var(--bg-surface);
  border: 1px solid var(--border-soft);
  box-shadow: var(--shadow-soft);
  display: flex;
  flex-direction: column;
  gap: 18px;
  transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
}

.prompt-card::before {
  content: "";
  position: absolute;
  inset: -1px;
  border-radius: inherit;
  background: linear-gradient(135deg, rgba(79, 70, 229, 0.12), rgba(147, 51, 234, 0.12));
  opacity: 0;
  transition: opacity var(--transition-base);
  z-index: -1;
}

.prompt-card:hover {
  transform: translateY(-5px);
  border-color: rgba(79, 70, 229, 0.18);
  box-shadow: var(--shadow-medium);
}

.prompt-card:hover::before {
  opacity: 1;
}

.prompt-card.is-hidden {
  display: none;
}

.prompt-card__header {
  display: grid;
  grid-template-columns: 1fr auto;
  grid-template-rows: auto auto;
  gap: 10px 18px;
  align-items: start;
}

.prompt-card__eyebrow {
  grid-column: 1 / 2;
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--text-muted);
  text-transform: uppercase;
}

.prompt-card__title {
  grid-column: 1 / 2;
  margin: 0;
  font-size: 20px;
  font-weight: 700;
  color: var(--text-primary);
}

.prompt-card__category {
  grid-column: 2 / 3;
  grid-row: 1 / 3;
  align-self: start;
  justify-self: end;
  padding: 6px 12px;
  border-radius: 999px;
  background: rgba(59, 130, 246, 0.12);
  color: #1d4ed8;
  font-size: 13px;
  font-weight: 600;
  border: 1px solid rgba(147, 197, 253, 0.7);
}

.prompt-card__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  font-size: 13px;
  color: var(--text-muted);
  padding-bottom: 10px;
  border-bottom: 1px solid rgba(226, 232, 240, 0.65);
}

.prompt-card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.prompt-card__tag {
  padding: 6px 12px;
  border-radius: 999px;
  background: rgba(59, 130, 246, 0.14);
  color: #1d4ed8;
  font-size: 12px;
  font-weight: 600;
  border: 1px solid rgba(191, 219, 254, 0.8);
}

.prompt-card__content {
  font-size: 14px;
  line-height: 1.7;
  color: var(--text-secondary);
  min-height: 72px;
  white-space: pre-line;
  overflow-wrap: anywhere;
}

.prompt-card__actions {
  display: flex;
  justify-content: flex-end;
  margin-top: auto;
}

.prompt-card__more {
  padding: 10px 18px;
  border-radius: 999px;
  border: none;
  background: linear-gradient(135deg, rgba(79, 70, 229, 0.95), rgba(56, 189, 248, 0.95));
  color: #ffffff;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.prompt-card__more::after {
  content: "→";
  font-size: 14px;
  opacity: 0.8;
}

.prompt-card__more:hover {
  transform: translateX(4px);
  box-shadow: var(--shadow-medium);
}

.prompt-card__more:focus-visible {
  outline: 2px solid rgba(79, 70, 229, 0.3);
  outline-offset: 3px;
}

.prompt-card__full {
  display: none;
}

.empty-state {
  grid-column: 1 / -1;
  padding: 70px 24px;
  border-radius: var(--radius-lg);
  border: 1px dashed rgba(79, 70, 229, 0.2);
  background: var(--bg-muted);
  color: var(--text-muted);
  font-size: 16px;
  text-align: center;
}

body.modal-open {
  overflow: hidden;
}

.modal {
  position: fixed;
  inset: 0;
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 1000;
}

.modal.is-open {
  display: flex;
}

.modal[hidden] {
  display: none !important;
}

.modal__backdrop {
  position: absolute;
  inset: 0;
  background: rgba(15, 23, 42, 0.25);
  backdrop-filter: blur(12px);
}

.modal__dialog {
  position: relative;
  width: min(860px, calc(100% - 40px));
  max-height: 92vh;
  display: flex;
  flex-direction: column;
  gap: 18px;
  padding: 36px 38px 34px;
  border-radius: var(--radius-xl);
  background: var(--bg-surface);
  border: 1px solid var(--border-soft);
  box-shadow: 0 35px 80px rgba(79, 70, 229, 0.18);
  z-index: 1;
}

.modal__close {
  position: absolute;
  top: 18px;
  right: 18px;
  width: 40px;
  height: 40px;
  border-radius: 999px;
  border: 1px solid rgba(79, 70, 229, 0.25);
  background: rgba(79, 70, 229, 0.1);
  color: var(--brand-primary);
  font-size: 26px;
  line-height: 1;
  cursor: pointer;
  transition: transform var(--transition-base), background var(--transition-base);
}

.modal__close:hover {
  transform: rotate(90deg);
  background: rgba(79, 70, 229, 0.2);
}

.modal__header {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding-right: 44px;
}

.modal__category {
  display: inline-flex;
  align-items: center;
  align-self: flex-start;
  padding: 6px 14px;
  border-radius: 999px;
  background: rgba(59, 130, 246, 0.12);
  color: #1d4ed8;
  font-size: 13px;
  font-weight: 600;
  border: 1px solid rgba(147, 197, 253, 0.7);
  width: fit-content;
}

.modal__title {
  margin: 0;
  font-size: 26px;
  font-weight: 700;
  color: var(--text-primary);
}

.modal__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  color: var(--text-muted);
  font-size: 14px;
}

.modal__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.modal__content {
  flex: 1 1 auto;
  white-space: pre-wrap;
  font-size: 15px;
  line-height: 1.8;
  color: var(--text-secondary);
  background: #ffffff;
  border: 1px solid rgba(226, 232, 240, 0.9);
  border-radius: var(--radius-md);
  padding: 20px 22px;
  box-shadow: inset 0 1px 0 rgba(248, 250, 252, 0.9);
  max-height: 52vh;
  overflow-y: auto;
}

.modal__actions {
  display: flex;
  justify-content: flex-end;
  align-items: center;
  gap: 12px;
}

#modal-copy {
  padding: 10px 20px;
  border-radius: var(--radius-sm);
  border: none;
  background: linear-gradient(135deg, rgba(79, 70, 229, 0.95), rgba(56, 189, 248, 0.95));
  color: #ffffff;
  font-weight: 600;
  cursor: pointer;
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

#modal-copy:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: 0 18px 32px rgba(79, 70, 229, 0.32);
}

#modal-copy:disabled {
  background: linear-gradient(135deg, rgba(79, 70, 229, 0.35), rgba(56, 189, 248, 0.35));
  color: rgba(255, 255, 255, 0.72);
  cursor: not-allowed;
}

.modal__message {
  font-size: 13px;
  color: var(--brand-secondary);
  min-height: 18px;
}

.modal__message.is-error {
  color: #e11d48;
}

@media (max-width: 1100px) {
  .app {
    grid-template-columns: 1fr;
    margin-top: -60px;
  }

  .sidebar {
    position: static;
  }
}

@media (max-width: 960px) {
  .hero__content {
    flex-direction: column;
  }

  .hero__stats {
    flex: 1 1 auto;
    min-width: 0;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  }

  .stat-card--cta {
    grid-column: span 1;
  }

  .app {
    width: calc(100% - 40px);
  }

  .content {
    padding: 30px 26px 36px;
  }

  .content__filters {
    flex-direction: column;
    align-items: stretch;
    gap: 12px;
  }

  .prompt-list {
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  }
}

@media (max-width: 720px) {
  .hero {
    padding: 64px 18px 92px;
  }

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

  .stat-card--cta {
    grid-column: span 1;
  }

  .app {
    width: calc(100% - 28px);
    margin-top: -32px;
  }

  .sidebar {
    padding: 24px 20px;
  }

  .category-list {
    flex-direction: row;
    flex-wrap: wrap;
    gap: 12px;
  }

  .category-button {
    flex: 1 1 calc(50% - 12px);
  }

  .content__toolbar {
    flex-direction: column;
    align-items: stretch;
    gap: 18px;
  }

  .toolbar__actions {
    justify-content: space-between;
  }

  .content__filters-chips {
    gap: 10px;
  }

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

@media (max-width: 480px) {
  .category-button {
    flex: 1 1 100%;
  }

  .toolbar__actions {
    flex-direction: column;
    align-items: stretch;
  }

  .toolbar__reset {
    width: 100%;
    text-align: center;
  }

  .content__filters {
    gap: 10px;
  }

  .content__filters-chips {
    gap: 8px;
  }

  .modal__dialog {
    padding: 28px 20px;
  }

  .modal__header {
    padding-right: 0;
  }
}

@media (min-width: 1280px) {
  .hero__stats {
    grid-template-columns: repeat(3, minmax(220px, 1fr));
  }

  .stat-card--cta {
    grid-column: span 3;
  }
}