/* ============ Buttons ============ */
.btn{
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 12px 22px; border-radius: var(--radius-sm); border: 1px solid transparent;
  font-family: var(--font-body); font-weight: 600; font-size: .95rem;
  transition: transform var(--dur-fast) var(--ease), box-shadow var(--dur-fast) var(--ease), background var(--dur-fast) var(--ease), border-color var(--dur-fast) var(--ease);
  white-space: nowrap;
}
.btn:active{ transform: translateY(1px) scale(.99); }
.btn-primary{ background: var(--accent); color: #fff; box-shadow: 0 4px 18px rgba(124,108,246,0.35); }
.btn-primary:hover{ background: var(--accent-hover); box-shadow: 0 6px 22px rgba(124,108,246,0.45); }
.btn-secondary{ background: var(--bg-elev-2); color: var(--text); border-color: var(--border); }
.btn-secondary:hover{ border-color: var(--accent); color: var(--accent-2); }
.btn-ghost{ background: transparent; color: var(--text-dim); }
.btn-ghost:hover{ color: var(--text); background: var(--bg-elev-2); }
.btn-sm{ padding: 8px 14px; font-size: .85rem; }
.btn-icon{ padding: 10px; border-radius: var(--radius-sm); background: var(--bg-elev-2); border: 1px solid var(--border); color: var(--text-dim); }
.btn-icon:hover{ color: var(--accent-2); border-color: var(--accent-2); }
.btn-block{ width: 100%; }
.btn svg{ width: 18px; height: 18px; flex-shrink: 0; }

/* ============ Header ============ */
.site-header{
  position: sticky; top: 0; z-index: 100;
  height: var(--header-h);
  display: flex; align-items: center;
  background: color-mix(in srgb, var(--bg) 85%, transparent);
  backdrop-filter: blur(14px) saturate(140%);
  border-bottom: 1px solid var(--border-soft);
}
.site-header .container{ display: flex; align-items: center; gap: 28px; }
.brand{ display: flex; align-items: center; gap: 10px; font-family: var(--font-display); font-weight: 800; font-size: 1.25rem; color: var(--text); flex-shrink: 0; }
.brand .brand-mark{ width: 34px; height: 34px; border-radius: 9px; background: linear-gradient(135deg, var(--accent), var(--accent-2)); display: flex; align-items: center; justify-content: center; color: #fff; font-weight: 800; }
.main-nav{ display: flex; align-items: center; gap: 4px; flex: 1; }
.main-nav a{
  padding: 9px 14px; border-radius: var(--radius-sm); font-size: .92rem; font-weight: 600; color: var(--text-dim);
  transition: color var(--dur-fast) var(--ease), background var(--dur-fast) var(--ease);
}
.main-nav a:hover, .main-nav a.active{ color: var(--text); background: var(--bg-elev-2); }
.header-actions{ display: flex; align-items: center; gap: 10px; margin-left: auto; }
.nav-toggle{ display: none; background: none; border: none; color: var(--text); padding: 6px; }

@media (max-width: 900px){
  .main-nav{
    position: fixed; inset: var(--header-h) 0 0 0; flex-direction: column; align-items: stretch;
    background: var(--bg); padding: 20px; gap: 4px; transform: translateX(100%);
    transition: transform var(--dur-med) var(--ease); overflow-y: auto;
  }
  .main-nav.open{ transform: translateX(0); }
  .main-nav a{ padding: 14px 16px; font-size: 1.05rem; }
  .nav-toggle{ display: block; }
}

/* ============ Search (command palette style) ============ */
.tool-search{ position: relative; }
.tool-search input{
  width: 100%; padding: 16px 50px 16px 50px; border-radius: var(--radius-md);
  border: 1px solid var(--border); background: var(--bg-elev); color: var(--text);
  font-size: 1rem; font-family: var(--font-body);
}
.tool-search input::placeholder{ color: var(--text-faint); }
.tool-search input:focus{ border-color: var(--accent); box-shadow: var(--shadow-glow); outline: none; }
.tool-search .search-icon{ position: absolute; left: 16px; top: 50%; transform: translateY(-50%); color: var(--text-faint); width: 20px; height: 20px; }
.tool-search .search-kbd{
  position: absolute; right: 14px; top: 50%; transform: translateY(-50%);
  font-family: var(--font-mono); font-size: .75rem; color: var(--text-faint);
  border: 1px solid var(--border); padding: 3px 7px; border-radius: 6px; background: var(--bg-elev-2);
}
.search-results{
  position: absolute; top: calc(100% + 10px); left: 0; right: 0; z-index: 50;
  background: var(--bg-elev); border: 1px solid var(--border); border-radius: var(--radius-md);
  box-shadow: var(--shadow-md); max-height: 380px; overflow-y: auto; display: none;
}
.search-results.open{ display: block; }
.search-results a{
  display: flex; align-items: center; gap: 12px; padding: 12px 16px;
  border-bottom: 1px solid var(--border-soft); font-size: .92rem;
}
.search-results a:last-child{ border-bottom: none; }
.search-results a:hover, .search-results a.active-result{ background: var(--bg-elev-2); }
.search-results .result-icon{ width: 32px; height: 32px; border-radius: 8px; background: var(--accent-soft); display: flex; align-items: center; justify-content: center; font-size: 1rem; }
.search-empty{ padding: 24px 16px; text-align: center; color: var(--text-faint); font-size: .9rem; }

/* ============ Cards ============ */
.tool-card{
  display: flex; flex-direction: column; gap: 12px; padding: 22px;
  background: var(--bg-elev); border: 1px solid var(--border); border-radius: var(--radius-md);
  transition: transform var(--dur-fast) var(--ease), border-color var(--dur-fast) var(--ease), box-shadow var(--dur-fast) var(--ease);
}
.tool-card:hover{ transform: translateY(-4px); border-color: var(--accent); box-shadow: var(--shadow-md); }
.tool-card .card-icon{
  width: 44px; height: 44px; border-radius: 10px; display: flex; align-items: center; justify-content: center;
  font-size: 1.3rem; background: var(--accent-soft); color: var(--accent-2);
}
.tool-card h3{ font-size: 1.05rem; margin: 0; }
.tool-card p{ font-size: .88rem; margin: 0; color: var(--text-dim); flex: 1; }
.tool-card .card-tag{ font-family: var(--font-mono); font-size: .7rem; color: var(--text-faint); text-transform: uppercase; letter-spacing: .06em; }

.category-card{
  display: flex; flex-direction: column; gap: 10px; padding: 26px;
  background: var(--bg-elev); border: 1px solid var(--border); border-radius: var(--radius-lg);
  transition: transform var(--dur-fast) var(--ease), border-color var(--dur-fast) var(--ease);
}
.category-card:hover{ transform: translateY(-4px); border-color: var(--accent-2); }
.category-card .cat-icon{ font-size: 1.8rem; }
.category-card .cat-count{ font-family: var(--font-mono); font-size: .78rem; color: var(--text-faint); }

.grid{ display: grid; gap: 20px; }
.grid-tools{ grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); }
.grid-categories{ grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); }

/* ============ Alerts / Toast / Modal / Spinner ============ */
.alert{ display: flex; gap: 12px; align-items: flex-start; padding: 14px 16px; border-radius: var(--radius-sm); border: 1px solid var(--border); background: var(--bg-elev); font-size: .9rem; }
.alert-success{ border-color: color-mix(in srgb, var(--success) 40%, var(--border)); background: color-mix(in srgb, var(--success) 8%, var(--bg-elev)); }
.alert-warning{ border-color: color-mix(in srgb, var(--warning) 40%, var(--border)); background: color-mix(in srgb, var(--warning) 8%, var(--bg-elev)); }
.alert-danger{ border-color: color-mix(in srgb, var(--danger) 40%, var(--border)); background: color-mix(in srgb, var(--danger) 8%, var(--bg-elev)); }

.toast-stack{ position: fixed; bottom: 20px; right: 20px; z-index: 999; display: flex; flex-direction: column; gap: 10px; }
.toast{
  min-width: 260px; max-width: 340px; padding: 14px 16px; border-radius: var(--radius-sm);
  background: var(--bg-elev-2); border: 1px solid var(--border); box-shadow: var(--shadow-md);
  font-size: .88rem; display: flex; align-items: center; gap: 10px;
  animation: toast-in var(--dur-med) var(--ease);
}
.toast.toast-success{ border-left: 3px solid var(--success); }
.toast.toast-error{ border-left: 3px solid var(--danger); }
@keyframes toast-in{ from{ opacity: 0; transform: translateX(20px); } to{ opacity: 1; transform: translateX(0); } }

.modal-overlay{
  position: fixed; inset: 0; background: rgba(6,7,10,0.7); backdrop-filter: blur(3px);
  display: none; align-items: center; justify-content: center; z-index: 998; padding: 20px;
}
.modal-overlay.open{ display: flex; }
.modal{ background: var(--bg-elev); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 28px; max-width: 480px; width: 100%; box-shadow: var(--shadow-md); }

.spinner{ width: 22px; height: 22px; border-radius: 50%; border: 3px solid var(--border); border-top-color: var(--accent); animation: spin .7s linear infinite; }
@keyframes spin{ to{ transform: rotate(360deg); } }

/* ============ Forms ============ */
.field{ margin-bottom: 18px; }
.field label{ display: block; font-size: .85rem; font-weight: 600; margin-bottom: 6px; color: var(--text-dim); }
.field input[type="text"], .field input[type="email"], .field input[type="number"], .field textarea, .field select{
  width: 100%; padding: 12px 14px; border-radius: var(--radius-sm); border: 1px solid var(--border);
  background: var(--bg-elev); color: var(--text); font-family: var(--font-body); font-size: .95rem;
}
.field input:focus, .field textarea:focus, .field select:focus{ border-color: var(--accent); outline: none; }
.field-row{ display: flex; gap: 14px; flex-wrap: wrap; }
.field-row > *{ flex: 1; min-width: 160px; }
.checkbox-field{ display: flex; align-items: center; gap: 8px; font-size: .9rem; color: var(--text-dim); }

/* ============ Breadcrumb ============ */
.breadcrumb{ display: flex; align-items: center; gap: 8px; font-size: .82rem; color: var(--text-faint); margin-bottom: 24px; flex-wrap: wrap; }
.breadcrumb a{ color: var(--text-dim); }
.breadcrumb a:hover{ color: var(--accent-2); }
.breadcrumb span{ color: var(--text-faint); }

/* ============ FAQ ============ */
.faq-item{ border-bottom: 1px solid var(--border-soft); }
.faq-question{
  width: 100%; display: flex; align-items: center; justify-content: space-between;
  padding: 18px 4px; background: none; border: none; color: var(--text); font-size: 1rem; font-weight: 600; text-align: left;
}
.faq-question .chev{ transition: transform var(--dur-fast) var(--ease); flex-shrink: 0; margin-left: 12px; color: var(--text-faint); }
.faq-item.open .chev{ transform: rotate(180deg); }
.faq-answer{ max-height: 0; overflow: hidden; transition: max-height var(--dur-med) var(--ease); }
.faq-answer p{ padding: 0 4px 18px; }

/* ============ Badges ============ */
.badge{ display: inline-flex; align-items: center; gap: 6px; padding: 4px 10px; border-radius: 999px; font-size: .74rem; font-weight: 600; background: var(--accent-soft); color: var(--accent-2); }

/* ============ Footer ============ */
.site-footer{ border-top: 1px solid var(--border-soft); padding: 60px 0 30px; margin-top: 60px; }
.footer-grid{ display: grid; grid-template-columns: 1.4fr repeat(4, 1fr); gap: 32px; margin-bottom: 40px; }
.footer-col h4{ font-size: .85rem; text-transform: uppercase; letter-spacing: .06em; color: var(--text-faint); margin-bottom: 14px; }
.footer-col a{ display: block; padding: 5px 0; font-size: .9rem; color: var(--text-dim); }
.footer-col a:hover{ color: var(--accent-2); }
.footer-bottom{ display: flex; justify-content: space-between; align-items: center; padding-top: 24px; border-top: 1px solid var(--border-soft); font-size: .82rem; color: var(--text-faint); flex-wrap: wrap; gap: 12px; }
@media (max-width: 800px){ .footer-grid{ grid-template-columns: repeat(2, 1fr); } }

/* Theme toggle */
.theme-toggle{ position: relative; width: 40px; height: 40px; }
.theme-toggle svg{ position: absolute; inset: 8px; }
.theme-toggle .icon-moon{ display: none; }
[data-theme="light"] .theme-toggle .icon-sun{ display: none; }
[data-theme="light"] .theme-toggle .icon-moon{ display: block; }