/* ==========================================================================
   Components — nav, footer, buttons, cards, inputs, tool grid, toast, etc.
   ========================================================================== */

/* --- Site header / nav ---------------------------------------------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  padding-block: var(--space-3);
}

.brand {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-weight: 800;
  font-size: 1.15rem;
  color: var(--color-text);
}

.brand:hover {
  text-decoration: none;
  color: var(--color-text);
}

.brand-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: var(--radius-sm);
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  color: #fff;
  font-size: 1rem;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: var(--space-5);
}

.main-nav a {
  color: var(--color-text-muted);
  font-weight: 600;
  font-size: 0.95rem;
}

.main-nav a:hover,
.main-nav a.active {
  color: var(--color-text);
  text-decoration: none;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.theme-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
  background: var(--color-surface-alt);
  color: var(--color-text);
  cursor: pointer;
  font-size: 1rem;
}

.theme-toggle:hover {
  border-color: var(--color-primary);
}

/* --- Breadcrumb -------------------------------------------------------- */

.breadcrumb {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  margin-bottom: var(--space-4);
}

.breadcrumb a {
  color: var(--color-text-muted);
}

.breadcrumb a:hover {
  color: var(--color-primary);
}

/* --- Buttons ------------------------------------------------------------ */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: 0.6rem 1.1rem;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  transition: background-color 0.15s ease, border-color 0.15s ease, transform 0.05s ease;
  background: var(--color-surface-alt);
  color: var(--color-text);
}

.btn:hover {
  text-decoration: none;
  border-color: var(--color-primary);
}

.btn:active {
  transform: translateY(1px);
}

.btn-primary {
  background: var(--color-primary);
  color: var(--color-primary-contrast);
  border-color: var(--color-primary);
}

.btn-primary:hover {
  background: var(--color-primary-hover);
  border-color: var(--color-primary-hover);
  color: var(--color-primary-contrast);
}

.btn-outline {
  background: transparent;
  border-color: var(--color-border);
}

.btn-sm {
  padding: 0.35rem 0.7rem;
  font-size: 0.85rem;
}

.btn-block {
  width: 100%;
}

.btn:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}

/* --- Form elements ------------------------------------------------------ */

.field {
  margin-bottom: var(--space-4);
}

.field label {
  display: block;
  font-weight: 600;
  font-size: 0.9rem;
  margin-bottom: var(--space-2);
}

.input,
.textarea,
.select {
  width: 100%;
  padding: 0.65rem 0.85rem;
  font-size: 0.95rem;
  font-family: inherit;
  color: var(--color-text);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  transition: border-color 0.15s ease;
}

.input:focus,
.textarea:focus,
.select:focus {
  border-color: var(--color-primary);
}

.textarea {
  resize: vertical;
  min-height: 160px;
  font-family: var(--font-mono);
}

.help-text {
  font-size: 0.82rem;
  color: var(--color-text-muted);
  margin-top: var(--space-2);
}

.field-row {
  display: flex;
  gap: var(--space-4);
  flex-wrap: wrap;
}

.field-row > * {
  flex: 1;
  min-width: 160px;
}

.checkbox-row {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin-bottom: var(--space-2);
}

.checkbox-row input[type="checkbox"] {
  width: 18px;
  height: 18px;
  accent-color: var(--color-primary);
}

/* --- Cards --------------------------------------------------------------- */

.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  padding: var(--space-5);
}

.tool-shell {
  display: grid;
  gap: var(--space-5);
}

/* --- Hero / homepage search --------------------------------------------- */

.hero {
  text-align: center;
  padding-block: var(--space-7) var(--space-6);
}

.hero p {
  color: var(--color-text-muted);
  max-width: 640px;
  margin-inline: auto;
}

.search-box {
  max-width: 520px;
  margin: var(--space-5) auto 0;
  position: relative;
}

.search-box input {
  width: 100%;
  padding: 0.85rem 1rem 0.85rem 2.6rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  font-size: 1rem;
}

.search-box .search-icon {
  position: absolute;
  left: 0.9rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--color-text-muted);
}

/* --- Category filter chips ----------------------------------------------- */

.category-chips {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  justify-content: center;
  margin-top: var(--space-4);
}

.chip {
  padding: 0.4rem 0.9rem;
  border-radius: 999px;
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  color: var(--color-text-muted);
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
}

.chip:hover {
  border-color: var(--color-primary);
  color: var(--color-text);
}

.chip.active {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: var(--color-primary-contrast);
}

/* --- Tool grid ------------------------------------------------------------ */

.tool-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: var(--space-4);
  margin-top: var(--space-6);
}

.tool-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-4);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  transition: transform 0.12s ease, box-shadow 0.12s ease, border-color 0.12s ease;
}

.tool-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  border-color: var(--color-primary);
  text-decoration: none;
}

.tool-card .tool-icon {
  width: 40px;
  height: 40px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  background: var(--color-surface-alt);
  font-size: 1.2rem;
}

.tool-card h3 {
  margin: 0;
  font-size: 1.05rem;
  color: var(--color-text);
}

.tool-card p {
  margin: 0;
  font-size: 0.88rem;
  color: var(--color-text-muted);
}

.tool-card .tool-tag {
  align-self: flex-start;
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--color-primary);
}

.empty-state {
  text-align: center;
  padding: var(--space-7) var(--space-4);
  color: var(--color-text-muted);
}

/* --- Tabs ------------------------------------------------------------------ */

.tabs {
  display: flex;
  gap: var(--space-2);
  border-bottom: 1px solid var(--color-border);
  margin-bottom: var(--space-4);
}

.tab-btn {
  padding: 0.6rem 1rem;
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  color: var(--color-text-muted);
  font-weight: 600;
  cursor: pointer;
}

.tab-btn.active {
  color: var(--color-primary);
  border-bottom-color: var(--color-primary);
}

/* --- Copy button / output area ---------------------------------------------- */

.output-box {
  position: relative;
}

.copy-btn {
  position: absolute;
  top: var(--space-2);
  right: var(--space-2);
}

/* --- Canvas preview (QR code, etc.) ------------------------------------------ */

.canvas-frame {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-4);
  background: var(--color-surface-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  min-height: 200px;
}

.canvas-frame canvas {
  max-width: 100%;
  height: auto;
  image-rendering: pixelated;
}

/* --- Toast ------------------------------------------------------------------- */

.toast-region {
  position: fixed;
  bottom: var(--space-5);
  right: var(--space-5);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  z-index: 1000;
}

.toast {
  background: var(--color-text);
  color: var(--color-bg);
  padding: 0.7rem 1.1rem;
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-lg);
  font-size: 0.9rem;
  opacity: 0;
  transform: translateY(8px);
  transition: opacity 0.2s ease, transform 0.2s ease;
}

.toast.show {
  opacity: 1;
  transform: translateY(0);
}

/* --- Spinner ------------------------------------------------------------------ */

.spinner {
  width: 20px;
  height: 20px;
  border: 3px solid var(--color-border);
  border-top-color: var(--color-primary);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* --- Drag & drop upload zone ---------------------------------------------------- */

.dropzone {
  border: 2px dashed var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-6);
  text-align: center;
  color: var(--color-text-muted);
  cursor: pointer;
  transition: border-color 0.15s ease, background-color 0.15s ease;
}

.dropzone.dragover {
  border-color: var(--color-primary);
  background: var(--color-surface-alt);
}

/* --- FAQ / accordion ------------------------------------------------------------- */

.faq-item {
  border-bottom: 1px solid var(--color-border);
  padding-block: var(--space-3);
}

.faq-item summary {
  cursor: pointer;
  font-weight: 600;
  list-style: none;
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-item summary::before {
  content: "+";
  display: inline-block;
  width: 1.2em;
  color: var(--color-primary);
  font-weight: 800;
}

.faq-item[open] summary::before {
  content: "\2212";
}

.faq-item p {
  margin: var(--space-2) 0 0 1.2em;
  color: var(--color-text-muted);
}

/* --- Footer -------------------------------------------------------------------- */

.site-footer {
  border-top: 1px solid var(--color-border);
  background: var(--color-surface);
  margin-top: var(--space-7);
  padding-block: var(--space-6);
  color: var(--color-text-muted);
  font-size: 0.88rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: var(--space-5);
}

.footer-grid h4 {
  color: var(--color-text);
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: var(--space-3);
}

.footer-grid ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.footer-grid a {
  color: var(--color-text-muted);
}

.footer-grid a:hover {
  color: var(--color-primary);
}

.footer-bottom {
  margin-top: var(--space-6);
  padding-top: var(--space-4);
  border-top: 1px solid var(--color-border);
  text-align: center;
}

/* --- Alerts ------------------------------------------------------------------------ */

.alert {
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-sm);
  font-size: 0.88rem;
  margin-bottom: var(--space-4);
}

.alert-error {
  background: color-mix(in srgb, var(--color-danger) 12%, transparent);
  color: var(--color-danger);
  border: 1px solid color-mix(in srgb, var(--color-danger) 35%, transparent);
}

.code-output {
  background: var(--color-surface-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: var(--space-4);
  font-family: var(--font-mono);
  font-size: 0.85rem;
  white-space: pre-wrap;
  word-break: break-word;
  min-height: 200px;
  max-height: 480px;
  overflow: auto;
}

/* --- Strength meter ----------------------------------------------------------------- */

.strength-track {
  width: 100%;
  height: 8px;
  border-radius: 999px;
  background: var(--color-surface-alt);
  overflow: hidden;
  margin-block: var(--space-2);
}

.strength-bar {
  height: 100%;
  width: 0%;
  background: var(--color-danger);
  transition: width 0.2s ease, background-color 0.2s ease;
}

/* --- Badges ----------------------------------------------------------------------- */

.badge {
  display: inline-block;
  padding: 0.2rem 0.6rem;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 700;
}

.badge-client {
  background: color-mix(in srgb, var(--color-success) 15%, transparent);
  color: var(--color-success);
}

.badge-server {
  background: color-mix(in srgb, var(--color-info) 15%, transparent);
  color: var(--color-info);
}

/* --- Categories dropdown (in .main-nav) --------------------------------------------- */

.nav-dropdown {
  position: relative;
}

.nav-dropdown-toggle {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  background: none;
  border: none;
  font: inherit;
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--color-text-muted);
  cursor: pointer;
  padding: 0;
}

.nav-dropdown-toggle:hover,
.nav-dropdown.open .nav-dropdown-toggle {
  color: var(--color-text);
}

.nav-dropdown-toggle .caret {
  font-size: 0.65em;
  transition: transform 0.15s ease;
}

.nav-dropdown.open .nav-dropdown-toggle .caret {
  transform: rotate(180deg);
}

.nav-dropdown-menu {
  display: none;
  position: absolute;
  top: calc(100% + var(--space-3));
  left: 0;
  min-width: 220px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
  padding: var(--space-2);
  z-index: 200;
}

.nav-dropdown.open .nav-dropdown-menu {
  display: block;
}

.nav-dropdown-menu a {
  display: block;
  padding: 0.5rem 0.75rem;
  border-radius: var(--radius-sm);
  color: var(--color-text);
  font-size: 0.9rem;
  font-weight: 500;
}

.nav-dropdown-menu a:hover {
  background: var(--color-surface-alt);
  text-decoration: none;
}

/* --- Mobile nav toggle --------------------------------------------------------------- */

.nav-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
  background: var(--color-surface-alt);
  color: var(--color-text);
  cursor: pointer;
  font-size: 1.1rem;
}

/* --- Cookie consent banner ------------------------------------------------------------ */

.cookie-banner {
  position: fixed;
  left: var(--space-4);
  right: var(--space-4);
  bottom: var(--space-4);
  max-width: 640px;
  margin-inline: auto;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  padding: var(--space-4);
  z-index: 1000;
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 0.2s ease, transform 0.2s ease;
}

.cookie-banner.show {
  opacity: 1;
  transform: translateY(0);
}

.cookie-banner p {
  margin: 0 0 var(--space-3);
  font-size: 0.88rem;
  color: var(--color-text-muted);
}

.cookie-banner-actions {
  display: flex;
  gap: var(--space-2);
  flex-wrap: wrap;
}

/* --- Responsive ------------------------------------------------------------------- */

@media (max-width: 720px) {
  .nav-toggle {
    display: inline-flex;
  }

  .main-nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
    padding: var(--space-3) var(--space-5);
    box-shadow: var(--shadow-md);
  }

  .main-nav.is-open {
    display: flex;
  }

  .main-nav a,
  .nav-dropdown-toggle {
    padding: 0.6rem 0;
    border-bottom: 1px solid var(--color-border);
  }

  .nav-dropdown-menu {
    display: none;
    position: static;
    box-shadow: none;
    border: none;
    padding: 0 0 0 var(--space-3);
  }

  .nav-dropdown.open .nav-dropdown-menu {
    display: block;
  }

  .site-header .container {
    position: relative;
  }
}