:root {
  color-scheme: light;
  --font-sans: "Inter", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --color-bg: #f5f7fb;
  --color-bg-elevated: rgba(255, 255, 255, 0.85);
  --color-surface: rgba(255, 255, 255, 0.7);
  --color-border: rgba(17, 25, 40, 0.12);
  --color-text: #0f172a;
  --color-subtle: #475569;
  --color-muted: #cbd5f5;
  --accent-start: #1ecedf;
  --accent-end: #0668f6;
  --shadow-soft: 0 24px 70px -30px rgba(15, 23, 42, 0.45);
  --radius-lg: 18px;
  --radius-md: 14px;
  --radius-sm: 10px;
  --sidebar-width: 320px;
  --transition: 160ms ease;
}

:root[data-theme="dark"] {
  color-scheme: dark;
  --color-bg: #0d1524;
  --color-bg-elevated: rgba(17, 25, 40, 0.9);
  --color-surface: rgba(17, 25, 40, 0.85);
  --color-border: rgba(148, 163, 184, 0.16);
  --color-text: #f8fafc;
  --color-subtle: #cbd5f5;
  --color-muted: rgba(148, 163, 184, 0.24);
  --shadow-soft: 0 28px 60px -25px rgba(15, 23, 42, 0.75);
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  font-family: var(--font-sans);
  background: linear-gradient(160deg, rgba(30, 206, 223, 0.12), rgba(6, 104, 246, 0.08));
  background-color: var(--color-bg);
  color: var(--color-text);
  min-height: 100vh;
}

body {
  display: flex;
  justify-content: center;
  align-items: stretch;
  padding: 32px;
}

.page {
  width: min(1240px, 100%);
  display: flex;
  flex-direction: column;
  gap: 28px;
}

.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 22px 28px;
  background: var(--color-bg-elevated);
  backdrop-filter: blur(16px);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-soft);
  transition: background var(--transition), border-color var(--transition);
}

.brand {
  display: flex;
  align-items: center;
  gap: 18px;
}

.brand-mark {
  width: 48px;
  height: 48px;
  display: block;
  filter: drop-shadow(0 12px 20px rgba(6, 104, 246, 0.18));
  transition: transform var(--transition);
}

.brand-mark:hover {
  transform: scale(1.05);
}

.brand-copy h1 {
  margin: 0;
  font-size: 1.4rem;
  font-weight: 600;
}

.brand-copy p {
  margin: 4px 0 0;
  color: var(--color-subtle);
  font-size: 0.95rem;
}

.topbar-actions {
  display: flex;
  align-items: center;
  gap: 14px;
}

.theme-toggle {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  display: grid;
  place-items: center;
  cursor: pointer;
  transition: transform var(--transition), background var(--transition), border-color var(--transition);
}

.theme-toggle:hover {
  transform: translateY(-2px);
}

.theme-toggle i {
  width: 20px;
  height: 20px;
  color: var(--color-subtle);
}

.cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 20px;
  border-radius: 999px;
  background: linear-gradient(120deg, rgba(30, 206, 223, 0.9), rgba(6, 104, 246, 0.9));
  color: #f8fafc;
  text-decoration: none;
  font-weight: 500;
  box-shadow: 0 18px 28px -18px rgba(6, 104, 246, 0.6);
  transition: transform var(--transition), box-shadow var(--transition);
}

.cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 20px 32px -16px rgba(6, 104, 246, 0.7);
}

.layout {
  display: grid;
  grid-template-columns: var(--sidebar-width) 1fr;
  gap: 28px;
  min-height: 560px;
}

.sidebar {
  display: flex;
  flex-direction: column;
  gap: 22px;
}

.tool-nav {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 20px;
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(16px);
  box-shadow: var(--shadow-soft);
  transition: background var(--transition), border-color var(--transition);
}

.tool-tab {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 16px 18px;
  background: transparent;
  border: 1px solid transparent;
  border-radius: var(--radius-md);
  color: inherit;
  text-align: left;
  cursor: pointer;
  transition: transform var(--transition), border-color var(--transition), background var(--transition);
}

.tool-tab span {
  font-weight: 600;
}

.tool-tab small {
  display: block;
  margin-top: 4px;
  color: var(--color-subtle);
  font-size: 0.85rem;
}

.tool-tab i {
  width: 22px;
  height: 22px;
  color: var(--color-subtle);
  margin-top: 3px;
}

.tool-tab:hover {
  transform: translateY(-1px);
  border-color: rgba(6, 104, 246, 0.24);
  background: rgba(6, 104, 246, 0.08);
}

.tool-tab.active {
  border-color: rgba(6, 104, 246, 0.28);
  background: linear-gradient(120deg, rgba(30, 206, 223, 0.16), rgba(6, 104, 246, 0.14));
}

.coming-soon {
  padding: 20px;
  background: var(--color-bg-elevated);
  border: 1px dashed var(--color-border);
  border-radius: var(--radius-lg);
  color: var(--color-subtle);
  display: grid;
  gap: 12px;
  text-transform: uppercase;
  font-size: 0.72rem;
  letter-spacing: 0.12em;
}

.soon-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 14px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--color-border);
  border-radius: 999px;
  backdrop-filter: blur(12px);
  color: var(--color-subtle);
}

.soon-chip i {
  width: 18px;
  height: 18px;
}

.tool-panel {
  display: flex;
  flex-direction: column;
  gap: 24px;
  padding: 24px 28px 32px;
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-border);
  border-radius: calc(var(--radius-lg) + 2px);
  box-shadow: var(--shadow-soft);
  backdrop-filter: blur(18px);
  transition: background var(--transition), border-color var(--transition);
}

.tool-context {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.tool-title {
  margin: 0;
  font-size: 1.5rem;
  font-weight: 600;
}

.tool-description {
  margin: 0;
  color: var(--color-subtle);
  font-size: 1rem;
}

.workspace {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 18px;
  align-items: stretch;
}

.io-panel {
  display: flex;
  flex-direction: column;
  gap: 12px;
  position: relative;
}

.panel-label {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-subtle);
}

textarea {
  width: 100%;
  min-height: 260px;
  padding: 18px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  color: inherit;
  font-family: var(--font-sans);
  font-size: 0.98rem;
  line-height: 1.6;
  resize: vertical;
  transition: border-color var(--transition), box-shadow var(--transition), background var(--transition);
  box-shadow: 0 2px 12px -6px rgba(15, 23, 42, 0.1);
}

textarea:focus {
  outline: none;
  border-color: rgba(6, 104, 246, 0.38);
  box-shadow: 0 0 0 3px rgba(6, 104, 246, 0.18), 0 4px 16px -6px rgba(6, 104, 246, 0.25);
}

textarea[readonly] {
  background: rgba(15, 23, 42, 0.04);
}

.actions {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 14px;
}

.action-group {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.action {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 22px;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  background: rgba(6, 104, 246, 0.08);
  color: var(--accent-end);
  font-weight: 600;
  cursor: pointer;
  transition: transform var(--transition), box-shadow var(--transition), background var(--transition), border-color var(--transition);
}

.action i {
  width: 18px;
  height: 18px;
}

.action.primary {
  background: linear-gradient(125deg, var(--accent-start), var(--accent-end));
  border-color: rgba(6, 104, 246, 0.24);
  color: #f8fafc;
  box-shadow: 0 16px 24px -20px rgba(6, 104, 246, 0.8);
}

.action.ghost {
  background: transparent;
  border-color: var(--color-border);
  color: var(--color-subtle);
}

.action:hover {
  transform: translateY(-2px);
  box-shadow: 0 20px 32px -20px rgba(6, 104, 246, 0.6);
}

.action.primary:hover {
  box-shadow: 0 20px 36px -20px rgba(6, 104, 246, 0.75);
}

.action.ghost:hover {
  background: rgba(6, 104, 246, 0.1);
  color: var(--accent-end);
}

.results {
  display: grid;
  gap: 16px;
}

.result-card {
  padding: 20px;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  backdrop-filter: blur(10px);
  transition: border-color var(--transition), transform var(--transition), background var(--transition), box-shadow var(--transition);
  position: relative;
  overflow: hidden;
  box-shadow: 0 4px 16px -8px rgba(15, 23, 42, 0.15);
}

.result-card::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, rgba(30, 206, 223, 0.12), rgba(6, 104, 246, 0.08));
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition);
}

.result-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px -10px rgba(15, 23, 42, 0.25);
  border-color: rgba(6, 104, 246, 0.18);
}

.result-card:hover::after {
  opacity: 1;
}

.result-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
}

.result-title {
  margin: 0;
  font-size: 1rem;
  font-weight: 600;
}

.result-content {
  font-family: "JetBrains Mono", "Source Code Pro", "Fira Code", monospace;
  font-size: 0.9rem;
  line-height: 1.6;
  white-space: pre-wrap;
  color: var(--color-subtle);
  overflow-y: auto;
}

.copy-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 14px;
  border-radius: 999px;
  border: 1px solid var(--color-border);
  background: rgba(255, 255, 255, 0.08);
  color: var(--color-subtle);
  transition: background var(--transition), border-color var(--transition), color var(--transition);
}

.copy-btn:hover {
  cursor: pointer;
  background: rgba(6, 104, 246, 0.14);
  border-color: rgba(6, 104, 246, 0.24);
  color: var(--accent-end);
}

.result-card.error {
  border-color: rgba(239, 68, 68, 0.32);
  background: rgba(239, 68, 68, 0.08);
}

.result-card.error .result-title {
  color: #ef4444;
}

.footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 22px 28px;
  border-radius: var(--radius-lg);
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-border);
  backdrop-filter: blur(16px);
  font-size: 0.95rem;
  color: var(--color-subtle);
  box-shadow: var(--shadow-soft);
}

.footer a {
  color: var(--accent-end);
  text-decoration: none;
  font-weight: 500;
}

@media (max-width: 1200px) {
  body {
    padding: 24px;
  }

  .layout {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .sidebar {
    order: 2;
  }

  .tool-panel {
    order: 1;
  }

  .topbar {
    padding: 20px 24px;
  }

  .brand-copy h1 {
    font-size: 1.3rem;
  }

  .brand-copy p {
    font-size: 0.9rem;
  }

  .brand-mark {
    width: 42px;
    height: 42px;
    gap: 5px;
  }
}

@media (max-width: 900px) {
  .workspace {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .actions {
    flex-direction: row;
    justify-content: flex-start;
    width: 100%;
    overflow-x: auto;
    padding-bottom: 4px; /* Space for scrollbar if needed */
  }

  .action-group {
    flex-direction: row;
    flex: 1;
    gap: 10px;
  }

  .action {
    padding: 12px 18px;
    flex: 1;
    justify-content: center;
    white-space: nowrap;
  }

  .sidebar {
    gap: 16px;
  }

  .tool-nav {
    flex-direction: row;
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    -webkit-overflow-scrolling: touch;
    gap: 12px;
    padding: 4px 4px 16px 4px; /* Add space for shadow/focus */
    margin: 0 -4px; /* Compensate for padding */
    background: transparent; /* Remove background to blend */
    border: none;
    box-shadow: none;
    backdrop-filter: none;
  }

  .tool-nav::-webkit-scrollbar {
    height: 0px; /* Hide scrollbar for cleaner look */
    background: transparent;
  }

  .tool-tab {
    min-width: auto; /* Allow flexible width */
    flex: 0 0 auto;
    width: 160px; /* Fixed width for consistency */
    scroll-snap-align: start;
    padding: 14px;
    background: var(--color-bg-elevated);
    border: 1px solid var(--color-border);
    box-shadow: 0 4px 12px -6px rgba(15, 23, 42, 0.08);
    flex-direction: column; /* Stack icon and text */
    align-items: center;
    text-align: center;
    gap: 8px;
  }

  .tool-tab.active {
    border-color: rgba(6, 104, 246, 0.4);
    box-shadow: 0 8px 20px -8px rgba(6, 104, 246, 0.25);
    background: var(--color-bg-elevated); /* Keep solid background */
  }
  
  .tool-tab.active::after {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: inherit;
    background: linear-gradient(120deg, rgba(30, 206, 223, 0.1), rgba(6, 104, 246, 0.08));
    pointer-events: none;
  }

  .tool-tab i {
    width: 24px;
    height: 24px;
    margin-top: 0;
    color: var(--accent-end);
  }

  .tool-tab div {
    display: flex;
    flex-direction: column;
    gap: 4px;
  }
  
  .tool-tab span {
    font-size: 0.9rem;
  }

  .tool-tab small {
    display: none; /* Hide description on mobile to save space */
  }

  .coming-soon {
    display: none; /* Hide coming soon on mobile to reduce clutter */
  }

  .result-card {
    padding: 18px;
  }

  .result-content {
    font-size: 0.88rem;
  }
}

@media (max-width: 640px) {
  body {
    padding: 16px;
  }

  .page {
    gap: 20px;
  }

  .topbar {
    flex-direction: column;
    gap: 16px;
    align-items: flex-start;
    padding: 18px;
  }

  .topbar-actions {
    width: 100%;
    justify-content: space-between;
  }

  .cta {
    flex: 1;
    justify-content: center;
    padding: 11px 18px;
  }

  .footer {
    flex-direction: column;
    gap: 12px;
    align-items: center;
    text-align: center;
    padding: 18px;
  }

  .brand {
    gap: 14px;
  }

  .brand-mark {
    width: 38px;
    height: 38px;
    gap: 4px;
  }

  .brand-mark span:nth-child(3) {
    height: 16px;
  }

  .brand-copy h1 {
    font-size: 1.2rem;
  }

  .brand-copy p {
    font-size: 0.88rem;
  }

  .layout {
    gap: 20px;
  }

  .tool-nav {
    padding: 14px;
    gap: 10px;
  }

  .tool-panel {
    padding: 20px;
    gap: 20px;
  }

  .coming-soon {
    padding: 14px;
  }

  .tool-context {
    gap: 6px;
  }

  .tool-title {
    font-size: 1.35rem;
  }

  .tool-description {
    font-size: 0.93rem;
  }

  textarea {
    min-height: 200px;
    padding: 16px;
    font-size: 0.95rem;
  }

  .tool-tab {
    min-width: 220px;
    flex: 0 0 220px;
    padding: 13px 15px;
  }

  .tool-tab span {
    font-size: 0.95rem;
  }

  .tool-tab small {
    font-size: 0.82rem;
  }

  .actions {
    gap: 12px;
  }

  .action-group {
    gap: 10px;
  }

  .action {
    padding: 11px 16px;
    font-size: 0.95rem;
  }

  .action i {
    width: 17px;
    height: 17px;
  }

  .result-card {
    padding: 16px;
  }

  .result-title {
    font-size: 0.95rem;
  }

  .result-content {
    font-size: 0.86rem;
  }

  .copy-btn {
    padding: 7px 12px;
    font-size: 0.88rem;
  }
}

@media (max-width: 480px) {
  body {
    padding: 14px;
  }

  .page {
    gap: 18px;
  }

  .topbar {
    padding: 16px;
  }

  .brand {
    gap: 12px;
  }

  .brand-mark {
    width: 36px;
    height: 36px;
  }

  .brand-copy h1 {
    font-size: 1.1rem;
  }

  .brand-copy p {
    font-size: 0.85rem;
  }

  .theme-toggle {
    width: 40px;
    height: 40px;
  }

  .cta {
    padding: 10px 16px;
    font-size: 0.92rem;
  }

  .tool-nav {
    padding: 12px;
  }

  .tool-panel {
    padding: 16px;
    gap: 18px;
  }

  .footer {
    padding: 16px;
    font-size: 0.88rem;
  }

  .tool-title {
    font-size: 1.25rem;
  }

  .tool-description {
    font-size: 0.9rem;
  }

  textarea {
    min-height: 180px;
    padding: 14px;
    font-size: 0.93rem;
  }

  .panel-label {
    font-size: 0.8rem;
  }

  .tool-tab {
    min-width: 200px;
    flex: 0 0 200px;
    padding: 12px 14px;
    gap: 12px;
  }

  .tool-tab i {
    width: 19px;
    height: 19px;
  }

  .tool-tab span {
    font-size: 0.93rem;
  }

  .tool-tab small {
    font-size: 0.8rem;
  }

  .action {
    padding: 10px 14px;
    font-size: 0.93rem;
  }

  .action i {
    width: 16px;
    height: 16px;
  }

  .action-group {
    gap: 8px;
  }

  .result-card {
    padding: 14px;
  }

  .result-title {
    font-size: 0.93rem;
  }

  .result-content {
    font-size: 0.84rem;
    line-height: 1.5;
  }

  .copy-btn {
    padding: 6px 11px;
    font-size: 0.85rem;
  }

  .soon-chip {
    padding: 8px 12px;
    font-size: 0.82rem;
  }

  .soon-chip i {
    width: 16px;
    height: 16px;
  }
}