/* ==========================================================================
   MyNiftyToolbox — Shared Components
   Reused across every app: header, footer, buttons, cards, ad slots.
   ========================================================================== */

/* --- Skip link (hidden until keyboard-focused) --- */
.skip-link {
  position: absolute;
  top: -100px;
  left: var(--space-4);
  z-index: 1000;
  background: var(--color-brand);
  color: var(--color-bg);
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-sm);
  font-size: var(--text-sm);
  font-weight: 600;
  transition: top 0.15s ease;
}

.skip-link:focus {
  top: var(--space-3);
}

/* --- Site header --- */
.site-header {
  height: var(--header-height);
  display: flex;
  align-items: center;
  border-bottom: 1px solid var(--color-border);
  background: color-mix(in srgb, var(--color-surface) 85%, transparent);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  position: sticky;
  top: 0;
  z-index: 50;
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
}

.site-logo {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-weight: 700;
  font-size: var(--text-lg);
  font-family: var(--font-display);
}

.site-logo .mark {
  width: 24px;
  height: 24px;
  border-radius: 8px;
  transition: transform 0.3s ease;
}

.site-logo:hover .mark {
  transform: rotate(-8deg) scale(1.08);
}

.site-nav {
  display: flex;
  gap: var(--space-5);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

.site-nav a {
  position: relative;
  padding-bottom: 2px;
}

.site-nav a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 0;
  height: 2px;
  background: var(--color-accent);
  transition: width 0.2s ease;
}

.site-nav a:hover {
  color: var(--color-text);
}

.site-nav a:hover::after {
  width: 100%;
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  border-radius: 999px;
  font-size: var(--text-sm);
  font-weight: 600;
  font-family: var(--font-display);
  white-space: nowrap;
  border: 1px solid transparent;
  transition: background 0.2s ease, border-color 0.2s ease, transform 0.15s ease, box-shadow 0.2s ease;
}

.btn-primary {
  background: var(--color-brand);
  color: var(--color-bg);
}

.btn-primary:hover {
  background: var(--color-brand-hover);
  transform: translateY(-1px);
  box-shadow: 0 6px 16px rgba(25, 25, 25, 0.28);
}

.btn-primary:active {
  transform: translateY(0);
}

.btn-accent {
  background: var(--color-accent);
  color: var(--color-bg);
}

.btn-accent:hover {
  background: var(--color-accent-hover);
  transform: translateY(-1px);
  box-shadow: 0 6px 16px rgba(25, 25, 25, 0.4);
}

.btn-secondary {
  background: var(--color-surface);
  color: var(--color-text);
  border-color: var(--color-border);
}

.btn-secondary:hover {
  border-color: var(--color-brand);
  color: var(--color-brand);
}

/* --- Cards --- */
.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-5);
  box-shadow: var(--shadow-sm);
  transition: box-shadow 0.25s ease, transform 0.25s ease, border-color 0.25s ease;
}

/* --- Ad slots ---
   Reserved space from day one so ads never shift layout when inserted. */
.ad-slot {
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-surface);
  border: 1px dashed var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text-subtle);
  font-size: var(--text-xs);
  min-height: 100px;
}

.ad-slot--sidebar {
  min-height: 250px;
}

.ad-slot--leaderboard {
  min-height: 90px;
}

/* --- Site footer --- */
.site-footer {
  border-top: 1px solid var(--color-border);
  margin-top: var(--space-8);
  padding: var(--space-6) 0;
  color: var(--color-text-muted);
  font-size: var(--text-sm);
}

.site-footer .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-3);
}

.site-footer a:hover {
  color: var(--color-text);
}

/* --- Tool card grid (hub landing page) --- */
.tool-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: var(--space-5);
}

.tool-card {
  position: relative;
  display: block;
  padding: var(--space-5);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  overflow: hidden;
  transition: box-shadow 0.3s ease, transform 0.3s ease, border-color 0.3s ease;
}

.tool-card::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(120px circle at var(--mx, 50%) var(--my, 0%), color-mix(in srgb, var(--color-accent) 16%, transparent), transparent 70%);
  opacity: 0;
  transition: opacity 0.3s ease;
  pointer-events: none;
}

.tool-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
  border-color: var(--color-brand);
}

.tool-card:hover::before {
  opacity: 1;
}

.tool-card .tool-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  background: linear-gradient(135deg, var(--color-brand), var(--color-accent));
  margin-bottom: var(--space-4);
  transition: transform 0.3s ease;
  display: flex;
  align-items: center;
  justify-content: center;
}

.tool-card .tool-icon svg {
  width: 22px;
  height: 22px;
  fill: var(--color-bg);
}

.tool-card:hover .tool-icon {
  transform: scale(1.08) rotate(-4deg);
}

.tool-card h3 {
  font-size: var(--text-lg);
  margin-bottom: var(--space-2);
}

.tool-card p {
  color: var(--color-text-muted);
  font-size: var(--text-sm);
}

/* --- Decorative palette-dab preview on tool cards --- */
.tool-card-swatches {
  display: flex;
  gap: 6px;
  margin-top: var(--space-4);
}

.tool-card-swatches span {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  border: 2px solid var(--color-bg);
  margin-left: -8px;
  box-shadow: var(--shadow-sm);
}

.tool-card-swatches span:first-child {
  margin-left: 0;
}

.tool-card-swatches span:nth-child(1) { background: oklch(68% 0.16 35); }
.tool-card-swatches span:nth-child(2) { background: oklch(72% 0.14 75); }
.tool-card-swatches span:nth-child(3) { background: oklch(60% 0.12 200); }
.tool-card-swatches span:nth-child(4) { background: oklch(55% 0.10 280); }
.tool-card-swatches span:nth-child(5) { background: oklch(24% 0.018 50); }

.badge {
  display: inline-block;
  font-size: var(--text-xs);
  font-weight: 600;
  padding: 2px 8px;
  border-radius: 999px;
  background: var(--color-brand-light);
  color: var(--color-brand);
  margin-bottom: var(--space-3);
}

/* --- Hero: animated gradient mesh signature --- */
.hero {
  position: relative;
  overflow: hidden;
}

.hero-mesh {
  position: absolute;
  inset: -20% -10% auto -10%;
  height: 420px;
  z-index: -1;
  filter: blur(70px);
  opacity: 0.18;
  background:
    radial-gradient(40% 55% at 20% 30%, var(--color-brand), transparent 70%),
    radial-gradient(35% 50% at 75% 25%, var(--color-accent), transparent 70%);
  animation: drift 16s ease-in-out infinite alternate;
}

@keyframes drift {
  0%   { transform: translate(0, 0) scale(1); }
  50%  { transform: translate(-2%, 3%) scale(1.06); }
  100% { transform: translate(3%, -2%) scale(1.02); }
}

.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--color-brand);
  background: var(--color-brand-light);
  padding: 6px 12px;
  border-radius: 999px;
  margin-bottom: var(--space-5);
}

.hero-eyebrow .dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-accent);
  box-shadow: 0 0 0 4px color-mix(in srgb, var(--color-accent) 25%, transparent);
}

@media (prefers-reduced-motion: reduce) {
  .hero-mesh {
    animation: none;
  }
}

/* --- Scroll progress bar --- */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  width: 0%;
  background: linear-gradient(90deg, var(--color-brand), var(--color-accent));
  z-index: 100;
  transition: width 0.1s ease-out;
}

/* --- Theme toggle --- */
.theme-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  color: var(--color-text-muted);
  transition: transform 0.4s ease, border-color 0.2s ease, color 0.2s ease;
}

.theme-toggle:hover {
  border-color: var(--color-brand);
  color: var(--color-brand);
  transform: rotate(20deg);
}

.theme-toggle svg {
  width: 18px;
  height: 18px;
}

.theme-toggle .icon-moon { display: none; }
[data-theme="dark"] .theme-toggle .icon-sun { display: none; }
[data-theme="dark"] .theme-toggle .icon-moon { display: block; }

/* --- Gradient headline text --- */
.text-gradient {
  background: linear-gradient(100deg, var(--color-text) 30%, var(--color-brand) 70%, var(--color-accent) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* --- Grid backdrop --- */
.grid-backdrop {
  position: absolute;
  inset: 0;
  z-index: -2;
  background-image:
    linear-gradient(color-mix(in srgb, var(--color-text) 5%, transparent) 1px, transparent 1px),
    linear-gradient(90deg, color-mix(in srgb, var(--color-text) 5%, transparent) 1px, transparent 1px);
  background-size: 40px 40px;
  mask-image: radial-gradient(ellipse 70% 60% at 50% 0%, black 40%, transparent 90%);
}

/* --- Magnetic button (JS adds transform via inline style on mousemove) --- */
.btn-accent, .btn-primary {
  will-change: transform;
}

/* --- Nav dropdown (Tools menu) --- */
.nav-dropdown {
  position: relative;
}

.nav-dropdown-toggle {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  background: none;
  border: none;
  font: inherit;
  color: inherit;
  cursor: pointer;
}

.nav-dropdown-toggle svg {
  width: 12px;
  height: 12px;
  transition: transform 0.2s ease;
}

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

.nav-dropdown-menu {
  position: absolute;
  top: calc(100% + 14px);
  left: 50%;
  transform: translateX(-50%) translateY(-6px);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
  min-width: 260px;
  padding: var(--space-2);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease, transform 0.2s ease;
  z-index: 60;
}

.nav-dropdown.open .nav-dropdown-menu {
  opacity: 1;
  pointer-events: auto;
  transform: translateX(-50%) translateY(0);
}

.nav-dropdown-label {
  font-size: var(--text-xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--color-text-subtle);
  padding: var(--space-2) var(--space-3) 4px;
}

.nav-dropdown-item {
  display: block;
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-sm);
  font-size: var(--text-sm);
}

.nav-dropdown-item .name {
  color: var(--color-text);
  font-weight: 600;
  display: block;
}

.nav-dropdown-item .tagline {
  color: var(--color-text-muted);
  font-size: var(--text-xs);
  display: block;
  margin-top: 2px;
}

.nav-dropdown-item:hover {
  background: var(--color-brand-light);
}

.nav-dropdown-item:hover .name {
  color: var(--color-brand);
}

.nav-dropdown-divider {
  height: 1px;
  background: var(--color-border);
  margin: var(--space-2) 0;
}

.nav-dropdown-all {
  display: block;
  padding: var(--space-2) var(--space-3);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-brand);
  border-radius: var(--radius-sm);
}

.nav-dropdown-all:hover {
  background: var(--color-brand-light);
}

/* --- Tool brand lockup (per-tool header identity) --- */
.tool-brand-row {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.tool-brand-icon {
  width: 28px;
  height: 28px;
  border-radius: var(--radius-sm);
  background: linear-gradient(135deg, var(--color-brand), var(--color-accent));
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.tool-brand-icon svg {
  width: 16px;
  height: 16px;
  fill: var(--color-bg);
}

.tool-brand {
  display: flex;
  flex-direction: column;
  line-height: 1.15;
}

.tool-brand .parent-link {
  font-size: var(--text-xs);
  color: var(--color-text-subtle);
  font-weight: 600;
}

.tool-brand .parent-link:hover {
  color: var(--color-brand);
}

.tool-brand .tool-name {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--text-lg);
  color: var(--color-text);
}

/* --- Footer tools list (per-tool footer) --- */
.footer-tools-list {
  display: flex;
  gap: var(--space-4);
  flex-wrap: wrap;
}

.footer-tools-list a:hover {
  color: var(--color-brand);
}

@media (max-width: 640px) {
  .site-nav {
    display: none;
  }
}