/* ========================================================
   AICLUB Mini App — Tools Catalog
   Vanilla CSS with Telegram WebApp Theme integration
   ======================================================== */

:root {
  /* Telegram theme fallbacks (Light default) */
  --bg-color: var(--tg-theme-bg-color, #ffffff);
  --text-color: var(--tg-theme-text-color, #111827);
  --hint-color: var(--tg-theme-hint-color, #6b7280);
  --link-color: var(--tg-theme-link-color, #2563eb);
  --btn-color: var(--tg-theme-button-color, #ffd23f);
  --btn-text-color: var(--tg-theme-button-text-color, #111827);
  --sec-bg-color: var(--tg-theme-secondary-bg-color, #f4f4f6);
  --header-bg: var(--tg-theme-header-bg-color, var(--bg-color));
  
  /* Component tokens */
  --card-bg: var(--sec-bg-color);
  --card-border: rgba(0, 0, 0, 0.08);
  --chip-bg: var(--bg-color);
  --chip-border: rgba(0, 0, 0, 0.12);
  --chip-active-bg: var(--btn-color);
  --chip-active-text: var(--btn-text-color);
  --badge-bg: rgba(0, 0, 0, 0.06);
  --badge-text: var(--text-color);
  --code-bg: #1c2128;
  --code-text: #e6edf3;
  --star-color: #f59e0b;
  --danger-color: #ef4444;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --safe-bottom: env(safe-area-inset-bottom, 0px);
}

/* Telegram or System Dark Mode overrides */
@media (prefers-color-scheme: dark) {
  :root {
    --bg-color: var(--tg-theme-bg-color, #17212b);
    --text-color: var(--tg-theme-text-color, #f5f5f5);
    --hint-color: var(--tg-theme-hint-color, #8e959b);
    --link-color: var(--tg-theme-link-color, #6ab2f2);
    --btn-color: var(--tg-theme-button-color, #ffd23f);
    --btn-text-color: var(--tg-theme-button-text-color, #111827);
    --sec-bg-color: var(--tg-theme-secondary-bg-color, #232e3c);
    
    --card-bg: var(--sec-bg-color);
    --card-border: rgba(255, 255, 255, 0.08);
    --chip-bg: rgba(255, 255, 255, 0.06);
    --chip-border: rgba(255, 255, 255, 0.14);
    --badge-bg: rgba(255, 255, 255, 0.09);
    --code-bg: #0d1117;
    --code-text: #c9d1d9;
    --star-color: #fbbf24;
  }
}

[data-theme="dark"] {
  --bg-color: var(--tg-theme-bg-color, #17212b);
  --text-color: var(--tg-theme-text-color, #f5f5f5);
  --hint-color: var(--tg-theme-hint-color, #8e959b);
  --link-color: var(--tg-theme-link-color, #6ab2f2);
  --btn-color: var(--tg-theme-button-color, #ffd23f);
  --btn-text-color: var(--tg-theme-button-text-color, #111827);
  --sec-bg-color: var(--tg-theme-secondary-bg-color, #232e3c);
  --card-bg: var(--sec-bg-color);
  --card-border: rgba(255, 255, 255, 0.08);
  --chip-bg: rgba(255, 255, 255, 0.06);
  --chip-border: rgba(255, 255, 255, 0.14);
  --badge-bg: rgba(255, 255, 255, 0.09);
  --code-bg: #0d1117;
  --code-text: #c9d1d9;
}

[data-theme="light"] {
  --bg-color: var(--tg-theme-bg-color, #ffffff);
  --text-color: var(--tg-theme-text-color, #111827);
  --hint-color: var(--tg-theme-hint-color, #6b7280);
  --link-color: var(--tg-theme-link-color, #2563eb);
  --btn-color: var(--tg-theme-button-color, #ffd23f);
  --btn-text-color: var(--tg-theme-button-text-color, #111827);
  --sec-bg-color: var(--tg-theme-secondary-bg-color, #f4f4f6);
  --card-bg: var(--sec-bg-color);
  --card-border: rgba(0, 0, 0, 0.08);
  --chip-bg: var(--bg-color);
  --chip-border: rgba(0, 0, 0, 0.12);
  --badge-bg: rgba(0, 0, 0, 0.06);
  --code-bg: #1c2128;
  --code-text: #e6edf3;
}

/* RESET & BASE */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  -webkit-tap-highlight-color: transparent;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background-color: var(--bg-color);
  color: var(--text-color);
  line-height: 1.45;
  font-size: 14px;
  overflow: hidden;
  height: 100vh;
  display: flex;
  flex-direction: column;
}

body.modal-open {
  overflow: hidden;
}

/* APP HEADER */
.app-header {
  flex-shrink: 0;
  background-color: var(--bg-color);
  border-bottom: 1px solid var(--card-border);
  padding: 10px 14px 8px;
  z-index: 10;
}

.header-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 10px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 6px;
}

.brand-title {
  font-size: 18px;
  font-weight: 800;
  letter-spacing: -0.02em;
}

.brand-badge {
  font-size: 10px;
  font-weight: 800;
  padding: 2px 6px;
  background-color: var(--btn-color);
  color: var(--btn-text-color);
  border-radius: 4px;
  letter-spacing: 0.05em;
}

.count-badge {
  font-size: 11px;
  font-weight: 600;
  color: var(--hint-color);
  background: var(--badge-bg);
  padding: 3px 8px;
  border-radius: 12px;
}

/* SEARCH BOX */
.search-box {
  position: relative;
  display: flex;
  align-items: center;
  margin-bottom: 10px;
}

.search-icon {
  position: absolute;
  left: 12px;
  width: 17px;
  height: 17px;
  color: var(--hint-color);
  pointer-events: none;
}

.search-box input {
  width: 100%;
  height: 38px;
  padding: 0 34px 0 38px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--chip-border);
  background-color: var(--sec-bg-color);
  color: var(--text-color);
  font-size: 14px;
  outline: none;
  transition: border-color 0.15s ease;
}

.search-box input:focus {
  border-color: var(--link-color);
}

.search-box input::placeholder {
  color: var(--hint-color);
}

.clear-btn {
  position: absolute;
  right: 8px;
  width: 24px;
  height: 24px;
  padding: 3px;
  background: transparent;
  border: none;
  color: var(--hint-color);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
}

.clear-btn:hover {
  color: var(--text-color);
}

/* CATEGORY CHIPS */
.categories-nav {
  overflow-x: auto;
  margin: 0 -14px;
  padding: 0 14px;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}

.categories-nav::-webkit-scrollbar {
  display: none;
}

.categories-track {
  display: flex;
  gap: 6px;
  white-space: nowrap;
  padding-bottom: 2px;
}

.chip {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  height: 28px;
  padding: 0 10px;
  font-size: 12px;
  font-weight: 600;
  border-radius: 14px;
  background-color: var(--chip-bg);
  border: 1px solid var(--chip-border);
  color: var(--text-color);
  cursor: pointer;
  transition: all 0.15s ease;
  flex-shrink: 0;
}

.chip:active {
  transform: scale(0.96);
}

.chip.active {
  background-color: var(--chip-active-bg);
  color: var(--chip-active-text);
  border-color: var(--chip-active-bg);
}

.chip-count {
  font-size: 10px;
  opacity: 0.75;
}

/* FEATURED SECTION */
.featured-section {
  margin-bottom: 14px;
  padding: 12px;
  background-color: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-md);
}

.featured-header {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 10px;
}

.featured-badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  background-color: var(--btn-color);
  color: var(--btn-text-color);
  font-size: 10px;
  font-weight: 800;
  padding: 3px 8px;
  border-radius: 999px;
  letter-spacing: 0.05em;
  flex-shrink: 0;
}

.featured-badge svg {
  width: 11px;
  height: 11px;
}

.featured-title-wrap {
  display: flex;
  flex-direction: column;
}

.featured-title {
  font-size: 13.5px;
  font-weight: 800;
  color: var(--text-color);
  line-height: 1.2;
}

.featured-sub {
  font-size: 10.5px;
  color: var(--hint-color);
}

.featured-track {
  display: flex;
  gap: 10px;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
  padding-bottom: 2px;
}

.featured-track::-webkit-scrollbar {
  display: none;
}

.featured-card {
  flex: 0 0 240px;
  max-width: 80vw;
  scroll-snap-align: start;
  background-color: var(--bg-color);
  border: 1.5px solid var(--chip-border);
  border-radius: var(--radius-sm);
  padding: 11px 12px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  cursor: pointer;
  transition: transform 0.12s ease, border-color 0.12s ease;
}

.featured-card:active {
  transform: scale(0.98);
  border-color: var(--link-color);
}

.featured-card-top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 6px;
  margin-bottom: 2px;
}

.featured-card-title {
  font-size: 14px;
  font-weight: 800;
  color: var(--text-color);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.featured-card-repo {
  font-size: 11px;
  color: var(--hint-color);
  font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
  margin-bottom: 6px;
}

.featured-card-desc {
  font-size: 11.5px;
  line-height: 1.4;
  color: var(--hint-color);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: 8px;
}

.featured-card-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: auto;
}

.featured-card-cta {
  font-size: 11px;
  font-weight: 700;
  color: var(--link-color);
  display: inline-flex;
  align-items: center;
  gap: 3px;
}

.featured-card-cta svg {
  width: 12px;
  height: 12px;
}

/* MAIN SCROLL CONTAINER */
.scroll-container {
  flex: 1;
  overflow-y: auto;
  overflow-x: hidden;
  -webkit-overflow-scrolling: touch;
  position: relative;
  padding: 10px 14px 74px; /* bottom padding so CTA does not obscure last cards */
}

.virtual-viewport {
  position: relative;
  width: 100%;
}

.virtual-content {
  display: flex;
  flex-direction: column;
}

/* TOOL CARD (Fixed Height: 116px + 10px margin = 126px total) */
.tool-card {
  height: 116px;
  margin-bottom: 10px;
  padding: 11px 13px;
  background-color: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-md);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  cursor: pointer;
  transition: transform 0.12s ease, border-color 0.12s ease;
  overflow: hidden;
  box-sizing: border-box;
}

.tool-card:active {
  transform: scale(0.985);
  border-color: var(--link-color);
}

.card-top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 8px;
}

.card-title {
  font-size: 15px;
  font-weight: 700;
  color: var(--text-color);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  flex: 1;
}

.card-stars {
  display: inline-flex;
  align-items: center;
  gap: 3px;
  font-size: 11px;
  font-weight: 700;
  color: var(--text-color);
  background: var(--badge-bg);
  padding: 2px 6px;
  border-radius: 6px;
  flex-shrink: 0;
}

.card-stars svg {
  width: 12px;
  height: 12px;
  color: var(--star-color);
  fill: var(--star-color);
}

.card-badges {
  display: flex;
  align-items: center;
  gap: 6px;
  margin: 3px 0 4px;
}

.badge {
  display: inline-block;
  font-size: 10.5px;
  font-weight: 600;
  padding: 1px 7px;
  border-radius: 4px;
  background-color: var(--badge-bg);
  color: var(--badge-text);
  white-space: nowrap;
}

.badge-cat {
  background-color: rgba(255, 210, 63, 0.2);
  color: var(--text-color);
}

.badge-lang {
  opacity: 0.85;
}

.card-desc {
  font-size: 12px;
  line-height: 1.35;
  color: var(--hint-color);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-top: 1px;
}

/* EMPTY STATE */
.empty-state {
  text-align: center;
  padding: 48px 20px;
}

.empty-icon {
  font-size: 40px;
  margin-bottom: 12px;
}

.empty-title {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 6px;
}

.empty-desc {
  font-size: 13px;
  color: var(--hint-color);
  margin-bottom: 18px;
}

.btn-reset {
  display: inline-block;
  padding: 8px 16px;
  font-size: 13px;
  font-weight: 600;
  background-color: var(--btn-color);
  color: var(--btn-text-color);
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
}

/* LOADING SKELETON */
.loading-state {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.skeleton-card {
  height: 116px;
  border-radius: var(--radius-md);
  background: linear-gradient(90deg, var(--sec-bg-color) 25%, rgba(128, 128, 128, 0.12) 50%, var(--sec-bg-color) 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
}

@keyframes shimmer {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

/* FIXED BOTTOM CTA */
.bottom-cta {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background-color: var(--bg-color);
  border-top: 1px solid var(--card-border);
  padding: 8px 14px calc(8px + var(--safe-bottom));
  z-index: 20;
}

.cta-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  max-width: 600px;
  margin: 0 auto;
}

.cta-text {
  display: flex;
  flex-direction: column;
}

.cta-label {
  font-size: 10.5px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--link-color);
}

.cta-title {
  font-size: 12.5px;
  font-weight: 700;
  color: var(--text-color);
}

.btn-cta {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  height: 34px;
  padding: 0 14px;
  font-size: 12.5px;
  font-weight: 700;
  background-color: var(--btn-color);
  color: var(--btn-text-color);
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  flex-shrink: 0;
  transition: transform 0.1s ease;
}

.btn-cta:active {
  transform: scale(0.96);
}

.btn-cta svg {
  width: 14px;
  height: 14px;
}

/* DETAIL SLIDE-OVER / MODAL */
.detail-view {
  position: fixed;
  inset: 0;
  background-color: var(--bg-color);
  z-index: 100;
  display: flex;
  flex-direction: column;
  transform: translateY(100%);
  transition: transform 0.24s cubic-bezier(0.16, 1, 0.3, 1);
  visibility: hidden;
}

.detail-view.active {
  transform: translateY(0);
  visibility: visible;
}

.detail-header {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 14px;
  border-bottom: 1px solid var(--card-border);
}

.detail-header-title {
  font-size: 15px;
  font-weight: 700;
}

.btn-icon {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: none;
  background: var(--sec-bg-color);
  color: var(--text-color);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: background-color 0.15s ease;
}

.btn-icon:active {
  background: var(--chip-border);
}

.btn-icon svg {
  width: 18px;
  height: 18px;
}

.detail-body {
  flex: 1;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
  padding: 16px 16px 20px;
}

.detail-title-row {
  margin-bottom: 10px;
}

.detail-title {
  font-size: 22px;
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 4px;
}

.detail-repo {
  font-size: 12px;
  color: var(--hint-color);
  font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
}

.detail-stats-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  margin: 14px 0;
}

.stat-box {
  background-color: var(--sec-bg-color);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-sm);
  padding: 8px 10px;
  text-align: center;
}

.stat-box-num {
  font-size: 14px;
  font-weight: 700;
  color: var(--text-color);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
}

.stat-box-num svg {
  width: 13px;
  height: 13px;
}

.stat-box-lbl {
  font-size: 10.5px;
  color: var(--hint-color);
  margin-top: 2px;
}

.detail-section {
  margin-top: 16px;
}

.detail-sec-title {
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--hint-color);
  margin-bottom: 6px;
}

.detail-desc {
  font-size: 14px;
  line-height: 1.55;
  color: var(--text-color);
}

.detail-fit-box {
  background-color: var(--sec-bg-color);
  border-left: 3px solid var(--btn-color);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  padding: 10px 12px;
  font-size: 13px;
  line-height: 1.45;
}

.detail-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.tag-item {
  font-size: 11px;
  background: var(--sec-bg-color);
  border: 1px solid var(--card-border);
  padding: 3px 8px;
  border-radius: 6px;
  color: var(--text-color);
}

.install-box {
  background-color: var(--code-bg);
  color: var(--code-text);
  border-radius: var(--radius-sm);
  padding: 10px 12px;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

.install-code {
  font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
  font-size: 11.5px;
  line-height: 1.35;
  word-break: break-all;
  user-select: all;
}

.btn-copy {
  flex-shrink: 0;
  background: rgba(255, 255, 255, 0.12);
  border: none;
  color: #ffffff;
  padding: 5px 9px;
  border-radius: 6px;
  font-size: 11px;
  font-weight: 600;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.btn-copy:active {
  background: rgba(255, 255, 255, 0.25);
}

.btn-copy svg {
  width: 12px;
  height: 12px;
}

/* DETAIL FOOTER */
.detail-footer {
  flex-shrink: 0;
  display: flex;
  gap: 10px;
  padding: 12px 16px calc(12px + var(--safe-bottom));
  border-top: 1px solid var(--card-border);
  background-color: var(--bg-color);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  height: 42px;
  border-radius: var(--radius-sm);
  font-size: 13.5px;
  font-weight: 700;
  cursor: pointer;
  border: none;
  transition: opacity 0.15s ease, transform 0.1s ease;
}

.btn:active {
  transform: scale(0.98);
}

.btn-primary {
  flex: 2;
  background-color: var(--btn-color);
  color: var(--btn-text-color);
}

.btn-secondary {
  flex: 1;
  background-color: var(--sec-bg-color);
  color: var(--text-color);
  border: 1px solid var(--card-border);
}

.btn svg {
  width: 16px;
  height: 16px;
}

/* TOAST */
.toast {
  position: fixed;
  bottom: calc(70px + var(--safe-bottom));
  left: 50%;
  transform: translateX(-50%) translateY(20px);
  background-color: #111827;
  color: #ffffff;
  padding: 8px 16px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 600;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
  opacity: 0;
  pointer-events: none;
  transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  z-index: 200;
  white-space: nowrap;
}

.toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}