*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --bg: #f8fafc;
  --bg-card: #ffffff;
  --bg-elevated: #f1f5f9;
  --text: #0f172a;
  --text-muted: #64748b;
  --accent: #0284c7;
  --accent-glow: rgba(2, 132, 199, 0.1);
  --accent-glow-strong: rgba(2, 132, 199, 0.2);
  --border: #e2e8f0;
  --border-accent: rgba(2, 132, 199, 0.3);
  --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --sidebar-w: 220px;
  --transition: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -1px rgba(0, 0, 0, 0.03);
}

html { font-size: 15px; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  line-height: 1.5;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

/* Scrollbar */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: rgba(15, 23, 42, 0.12); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: rgba(15, 23, 42, 0.22); }

.accent { color: var(--accent); }

/* ============ Sidebar ============ */
.sidebar {
  position: fixed;
  top: 0;
  left: 0;
  width: var(--sidebar-w);
  height: 100vh;
  background: var(--bg-card);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  z-index: 100;
  transition: width var(--transition);
}

.sidebar-brand {
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.sidebar-toggle {
  background: none;
  border: 1px solid transparent;
  color: var(--text-muted);
  cursor: pointer;
  padding: 0.3rem;
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition);
}

.sidebar-toggle:hover {
  color: var(--text);
  background: var(--bg-elevated);
  border-color: var(--border);
}

/* Collapsed sidebar */
.sidebar.collapsed {
  width: 0;
  overflow: hidden;
  border-right: none;
}

.sidebar.collapsed ~ .main {
  margin-left: 0;
}

/* Expand tab shown when sidebar is collapsed */
.sidebar-expand {
  position: fixed;
  top: 0.75rem;
  left: 0.5rem;
  z-index: 101;
  background: var(--bg-card);
  border: 1px solid var(--border);
  color: var(--text-muted);
  cursor: pointer;
  padding: 0.4rem;
  border-radius: 8px;
  display: none;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition);
}

.sidebar-expand:hover {
  color: var(--accent);
  border-color: var(--border-accent);
}

.sidebar-expand.visible {
  display: flex;
}

.brand-wordmark {
  font-size: 1.2rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text);
}

.brand-byline {
  font-size: 0.7rem;
  font-weight: 400;
  color: var(--text-muted);
  letter-spacing: 0.02em;
}

.sidebar-nav {
  list-style: none;
  padding: 0.5rem 0;
  flex: 1;
  overflow-y: auto;
}

.sidebar-nav li a {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.5rem 1.25rem;
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  transition: all var(--transition);
  border-left: 3px solid transparent;
}

.sidebar-nav li a svg {
  flex-shrink: 0;
  opacity: 0.6;
  transition: opacity var(--transition);
}

.sidebar-nav li a:hover {
  color: var(--text);
  background: var(--bg-elevated);
}

.sidebar-nav li a:hover svg { opacity: 1; }

.sidebar-nav li a.active {
  color: var(--accent);
  background: var(--accent-glow);
  border-left-color: var(--accent);
  font-weight: 600;
}

.sidebar-nav li a.active svg { opacity: 1; }

.sidebar-footer {
  padding: 0.75rem 1.25rem;
  border-top: 1px solid var(--border);
}

.sidebar-footer p {
  color: var(--text-muted);
  font-size: 0.75rem;
}

.sidebar-attribution {
  line-height: 1.5;
  margin-bottom: 0.5rem;
}

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

.sidebar-attribution a:hover {
  text-decoration: underline;
}

/* ============ Mobile header ============ */
.mobile-header {
  display: none;
  align-items: center;
  gap: 0.75rem;
  padding: 0 1rem;
  height: 48px;
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 50;
}

.hamburger {
  background: none;
  border: none;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  gap: 3px;
  padding: 0.4rem;
  border-radius: 6px;
}

.hamburger:hover { background: var(--bg-elevated); }

.hamburger span {
  display: block;
  width: 18px;
  height: 2px;
  background: var(--text-muted);
  border-radius: 2px;
}

/* ============ Overlay ============ */
.overlay {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.4);
  backdrop-filter: blur(4px);
  z-index: 99;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition);
}

.overlay.visible {
  opacity: 1;
  pointer-events: auto;
}

/* ============ Main ============ */
.main {
  margin-left: var(--sidebar-w);
  min-height: 100vh;
  transition: margin-left var(--transition);
}

/* ============ Pages ============ */
.page-content {
  padding: 1.5rem;
  max-width: 1100px;
}

.page-content.fade-in {
  animation: fadeIn 0.3s ease forwards;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ============ Panels ============ */
.panel {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1rem 1.25rem;
  box-shadow: var(--shadow-sm);
}

.panel-header {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.6rem;
}

.panel-header h2 {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--accent);
  flex: 1;
}

.dash-h1 {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 1rem;
  letter-spacing: -0.02em;
}

/* ============ Dashboard layout ============ */
.dashboard {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.dash-main {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  min-width: 0;
}


/* AI panel */
.ai-panel {
  border-left: 3px solid var(--accent);
}

.ai-guidance-text {
  color: var(--text);
  font-size: 0.95rem;
  line-height: 1.55;
}

.ai-guidance-text.updated {
  animation: guidancePulse 0.3s ease;
}

@keyframes guidancePulse {
  0% { opacity: 0.5; }
  100% { opacity: 1; }
}

.ai-loading { margin-top: 0.5rem; }

.loading-dots {
  color: var(--accent);
  font-size: 0.9rem;
  font-weight: 500;
}

.loading-dots span { animation: dotBlink 1.4s infinite; }
.loading-dots span:nth-child(2) { animation-delay: 0.2s; }
.loading-dots span:nth-child(3) { animation-delay: 0.4s; }

@keyframes dotBlink {
  0%, 20% { opacity: 0; }
  50% { opacity: 1; }
  100% { opacity: 0; }
}

/* Type panel */
.type-panel {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.type-badge {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.75rem;
  margin-bottom: 0.75rem;
}

.type-name {
  display: block;
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--accent);
  margin-bottom: 0.2rem;
}

.type-desc {
  display: block;
  font-size: 0.8rem;
  color: var(--text-muted);
  line-height: 1.4;
}

/* Input bar */
.input-bar {}

.input-bar-form {
  display: flex;
  gap: 0.5rem;
}

.input-bar-field {
  flex: 1;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.65rem 1rem;
  color: var(--text);
  font-family: var(--font);
  font-size: 0.95rem;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.input-bar-field::placeholder { color: #94a3b8; }

.input-bar-field:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow);
}

/* Inputs panel */
.inputs-panel {}

.input-list-header {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding-bottom: 0.6rem;
  border-bottom: 1px solid var(--border);
  margin-bottom: 0.5rem;
}

.input-list-header h3 {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text);
}

.input-list-items {
  max-height: 240px;
  overflow-y: auto;
}

.input-list-empty {
  color: var(--text-muted);
  font-size: 0.9rem;
  text-align: center;
  padding: 1.5rem 1rem;
}

.input-item {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.55rem 0;
  border-bottom: 1px solid var(--border);
  animation: itemFadeIn 0.25s ease forwards;
}

.input-item:last-child { border-bottom: none; }

.input-item-text {
  flex: 1;
  color: var(--text);
  font-size: 0.9rem;
  line-height: 1.4;
  min-width: 0;
  word-break: break-word;
}

.input-item-edit {
  flex: 1;
  background: #ffffff;
  border: 1px solid var(--accent);
  border-radius: 6px;
  padding: 0.4rem 0.6rem;
  color: var(--text);
  font-family: var(--font);
  font-size: 0.9rem;
  min-width: 0;
  box-shadow: 0 0 0 3px var(--accent-glow);
}

.input-item-edit:focus { outline: none; }

.input-item-actions {
  display: flex;
  gap: 0.15rem;
  flex-shrink: 0;
}

.input-item-btn {
  background: none;
  border: 1px solid transparent;
  color: var(--text-muted);
  cursor: pointer;
  padding: 0.3rem;
  border-radius: 5px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition);
}

.input-item-btn:hover {
  color: var(--accent);
  background: var(--bg-elevated);
  border-color: var(--border);
}

.input-item-btn.delete:hover {
  color: #ef4444;
  background: #fef2f2;
  border-color: #fca5a5;
}

.input-item.fade-out { animation: itemFadeOut 0.2s ease forwards; }

@keyframes itemFadeIn {
  from { opacity: 0; transform: translateX(6px); }
  to { opacity: 1; transform: translateX(0); }
}

@keyframes itemFadeOut {
  from { opacity: 1; transform: translateX(0); }
  to { opacity: 0; transform: translateX(-6px); }
}

/* Diagram panel */
.diagram-panel {}

.diagram-output-title {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 0.75rem;
}

.diagram-svg-container {
  width: 100%;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: #ffffff;
  overflow: hidden;
}

.diagram-svg-container svg {
  width: 100%;
  height: auto;
  display: block;
}

.diagram-error {
  color: #ef4444;
  font-size: 0.85rem;
  padding: 0.75rem;
  background: #fef2f2;
  border: 1px solid #fca5a5;
  border-radius: 8px;
}

/* ============ Example Showcase ============ */
.examples-showcase {}

.examples-showcase-desc {
  color: var(--text-muted);
  font-size: 0.85rem;
  margin-bottom: 1rem;
}

.showcase-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.showcase-item h4 {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 0.5rem;
}

.showcase-img-wrap {
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
  background: #ffffff;
  max-width: 300px;
}

.showcase-img-wrap img {
  width: 100%;
  height: auto;
  display: block;
}

/* ============ Buttons ============ */
.btn-primary {
  width: 100%;
  padding: 0.65rem;
  background: var(--accent);
  color: #ffffff;
  border: none;
  border-radius: 8px;
  font-family: var(--font);
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
  box-shadow: 0 2px 8px rgba(2, 132, 199, 0.2);
}

.btn-primary:hover:not(:disabled) {
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(2, 132, 199, 0.3);
}

.btn-primary:active:not(:disabled) { transform: translateY(0); }

.btn-primary:disabled {
  background: var(--bg-elevated);
  color: var(--text-muted);
  box-shadow: none;
  cursor: not-allowed;
  border: 1px solid var(--border);
}

.btn-primary.loading { opacity: 0.8; cursor: wait; }

.btn-sm {
  padding: 0.3rem 0.75rem;
  background: var(--bg-elevated);
  color: var(--accent);
  border: 1px solid var(--border-accent);
  border-radius: 6px;
  font-family: var(--font);
  font-size: 0.8rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
  margin-left: auto;
}

.btn-sm:hover {
  background: var(--accent-glow);
  border-color: var(--accent);
}

.btn-submit {
  background: var(--text);
  color: #ffffff;
  border: none;
  border-radius: 8px;
  padding: 0.65rem 1.25rem;
  font-family: var(--font);
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
  white-space: nowrap;
}

.btn-submit:hover { background: #334155; }
.btn-submit:active { transform: scale(0.97); }

/* ============ How to Use ============ */
.instructions {
  list-style: none;
  counter-reset: step;
  padding: 0;
}

.instructions li {
  counter-increment: step;
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 0.7rem 0;
  color: var(--text);
  font-size: 0.95rem;
  border-bottom: 1px solid var(--border);
}

.instructions li:last-child { border-bottom: none; }

.instructions li::before {
  content: counter(step);
  flex-shrink: 0;
  width: 2rem;
  height: 2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: var(--accent-glow);
  color: var(--accent);
  font-weight: 600;
  font-size: 0.85rem;
  border: 1px solid var(--border-accent);
}

.text-muted {
  color: var(--text-muted);
  font-size: 0.9rem;
  margin-top: 0.75rem;
}

/* ============ Examples ============ */
.page-title {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 0.3rem;
  letter-spacing: -0.02em;
}

.page-subtitle {
  color: var(--text-muted);
  font-size: 0.95rem;
  margin-bottom: 1.25rem;
}

.examples-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 1rem;
}

.example-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1rem;
  transition: all var(--transition);
  box-shadow: var(--shadow-sm);
  cursor: pointer;
}

.example-card:hover {
  border-color: var(--accent);
  box-shadow: var(--shadow-md);
  transform: translateY(-1px);
}

.example-thumb {
  width: 100%;
  height: 100px;
  background: var(--bg-elevated);
  border-radius: 6px;
  margin-bottom: 0.75rem;
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
}

.example-thumb::after {
  content: 'Preview';
  color: #94a3b8;
  font-size: 0.8rem;
  font-weight: 500;
}

.example-card h3 {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 0.2rem;
}

.example-card p {
  color: var(--text-muted);
  font-size: 0.85rem;
  line-height: 1.4;
}

/* ============ How It Works ============ */
.how-it-works-intro {
  color: var(--text);
  font-size: 0.95rem;
  line-height: 1.55;
  margin-bottom: 1.25rem;
}

.how-it-works-steps {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin-bottom: 1rem;
}

.hiw-step {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
}

.hiw-step-num {
  flex-shrink: 0;
  width: 2rem;
  height: 2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: var(--accent-glow);
  color: var(--accent);
  font-weight: 600;
  font-size: 0.85rem;
  border: 1px solid var(--border-accent);
}

.hiw-step h3 {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 0.15rem;
}

.hiw-step p {
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.45;
}

/* ============ How to Use Tips ============ */
.how-to-tips {
  margin-top: 1.25rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border);
}

.how-to-tips h3 {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 0.5rem;
}

.how-to-tips ul {
  list-style: none;
  padding: 0;
}

.how-to-tips li {
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.5;
  padding: 0.3rem 0;
  padding-left: 1rem;
  position: relative;
}

.how-to-tips li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.65rem;
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--accent);
}

/* ============ Focus ============ */
:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

/* ============ Responsive ============ */
@media (max-width: 768px) {
  .sidebar {
    left: calc(-1 * var(--sidebar-w));
    transition: left var(--transition);
    z-index: 200;
    box-shadow: var(--shadow-md);
  }

  .sidebar.open { left: 0; }
  .sidebar-toggle { display: none; }
  .sidebar-expand { display: none !important; }

  .mobile-header { display: flex; }

  .main { margin-left: 0; }

  .page-content { padding: 1rem; }

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

  .showcase-img-wrap {
    max-width: 100%;
  }
}

@media (max-width: 480px) {
  .sidebar { width: 100%; left: -100%; }

  .input-bar-form { flex-direction: column; }

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

/* ============ Modal ============ */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.6);
  backdrop-filter: blur(4px);
  z-index: 200;
  display: none;
  align-items: center;
  justify-content: center;
}

.modal-backdrop.visible {
  display: flex;
}

.modal {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.5rem 1.75rem;
  max-width: 400px;
  width: 90%;
}

.modal h3 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 0.75rem;
}

.modal p {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.5;
  margin-bottom: 1.25rem;
}

.modal-actions {
  display: flex;
  gap: 0.75rem;
  justify-content: flex-end;
}

.modal-btn {
  border: none;
  border-radius: 8px;
  padding: 0.5rem 1.25rem;
  font-family: var(--font);
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
}

.modal-cancel {
  background: transparent;
  color: var(--text-muted);
}

.modal-cancel:hover { color: var(--text); }

.modal-ok {
  background: var(--accent);
  color: #fff;
}

.modal-ok:hover { background: var(--accent-hover); transform: translateY(-1px); }
.modal-ok:active { transform: translateY(0); }

/* ============ Pricing Modal ============ */
.pricing-modal {
  max-width: 480px;
}

.pricing-cards {
  display: flex;
  gap: 0.75rem;
  margin-bottom: 1.25rem;
}

.pricing-card {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.35rem;
  padding: 1.25rem 1rem;
  background: var(--bg-elevated);
  border: 2px solid var(--border);
  border-radius: 10px;
  cursor: pointer;
  transition: all var(--transition);
  font-family: var(--font);
  position: relative;
}

.pricing-card:hover {
  border-color: var(--accent);
  background: var(--accent-glow);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.pricing-card-best {
  border-color: var(--border-accent);
}

.pricing-card-badge {
  position: absolute;
  top: -0.6rem;
  right: -0.4rem;
  background: var(--accent);
  color: #fff;
  font-size: 0.7rem;
  font-weight: 700;
  padding: 0.15rem 0.5rem;
  border-radius: 6px;
}

.pricing-card-amount {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text);
}

.pricing-card-price {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--accent);
}

/* ============ Toast ============ */
.toast {
  position: fixed;
  bottom: 1.5rem;
  left: 50%;
  transform: translateX(-50%) translateY(20px);
  background: var(--text);
  color: #fff;
  padding: 0.75rem 1.5rem;
  border-radius: 10px;
  font-family: var(--font);
  font-size: 0.9rem;
  font-weight: 500;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
  z-index: 300;
  opacity: 0;
  transition: opacity 0.3s ease, transform 0.3s ease;
  pointer-events: none;
}

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

/* ============ Contact Form ============ */
.contact-form {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin-top: 1.25rem;
  max-width: 460px;
}

.contact-form label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text);
  margin-bottom: -0.35rem;
}

.contact-form input,
.contact-form textarea {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.65rem 1rem;
  font-family: var(--font);
  font-size: 0.95rem;
  color: var(--text);
  transition: border-color var(--transition), box-shadow var(--transition);
}

.contact-form input::placeholder,
.contact-form textarea::placeholder {
  color: #94a3b8;
}

.contact-form input:focus,
.contact-form textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow);
}

.contact-form textarea {
  resize: vertical;
  min-height: 100px;
}

.contact-form .btn {
  margin-top: 0.5rem;
  align-self: flex-start;
  background: var(--accent);
  color: #ffffff;
  border: none;
  border-radius: 8px;
  padding: 0.65rem 1.5rem;
  font-family: var(--font);
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
}

.contact-form .btn:hover { background: var(--accent-hover); transform: translateY(-1px); }
.contact-form .btn:active { transform: translateY(0); }
.contact-form .btn:disabled { opacity: 0.6; cursor: not-allowed; transform: none; }

.contact-success {
  margin-top: 1.25rem;
  padding: 1rem 1.25rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--accent);
  font-weight: 600;
}