/* =========================================================
   EpicTools — main.css
   Global styles shared across the entire site.
   ========================================================= */

/* ---------------------------------------------------------
   1. Design Tokens (CSS Custom Properties)
   --------------------------------------------------------- */
:root {
  /* Color palette — Dark theme (default) */
  --color-bg:           #0F172A;
  --color-bg-card:      #1E293B;
  --color-bg-elevated:  #243347;
  --color-bg-hover:     #2D3F58;
  --color-border:       rgba(255, 255, 255, 0.07);
  --color-border-solid: #334155;

  --color-accent:       #06B6D4;
  --color-accent-hover: #22D3EE;
  --color-accent-dim:   rgba(6, 182, 212, 0.12);
  --color-accent-glow:  rgba(6, 182, 212, 0.20);

  --color-text:         #CBD5E1;
  --color-text-strong:  #F1F5F9;
  --color-text-heading: #F8FAFC;
  --color-text-muted:   #64748B;
  --color-text-subtle:  #475569;

  /* Typography */
  --font-heading: 'Plus Jakarta Sans', system-ui, -apple-system, sans-serif;
  --font-body:    'Inter', system-ui, -apple-system, sans-serif;
  --font-mono:    'SF Mono', 'Fira Code', 'Cascadia Code', Consolas, monospace;

  /* Spacing scale */
  --sp-1:  0.25rem;
  --sp-2:  0.5rem;
  --sp-3:  0.75rem;
  --sp-4:  1rem;
  --sp-5:  1.25rem;
  --sp-6:  1.5rem;
  --sp-8:  2rem;
  --sp-10: 2.5rem;
  --sp-12: 3rem;
  --sp-16: 4rem;

  /* Borders */
  --radius-sm:   4px;
  --radius:      8px;
  --radius-lg:   12px;
  --radius-xl:   16px;
  --radius-full: 9999px;

  /* Layout */
  --container-max: 1200px;
  --header-height: 64px;

  /* Transitions */
  --dur-fast: 120ms;
  --dur-base: 220ms;
  --ease:     cubic-bezier(0.4, 0, 0.2, 1);

  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
  --shadow:    0 2px 8px rgba(0, 0, 0, 0.4);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.45);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.55);
  --shadow-focus: 0 0 0 3px rgba(6, 182, 212, 0.25);
}

/* Light theme overrides */
:root[data-theme="light"] {
  --color-bg:           #F0F4F8;
  --color-bg-card:      #FFFFFF;
  --color-bg-elevated:  #F8FAFC;
  --color-bg-hover:     #EFF6FF;
  --color-border:       #E2E8F0;
  --color-border-solid: #CBD5E1;

  --color-accent:       #0284C7;
  --color-accent-hover: #0369A1;
  --color-accent-dim:   rgba(2, 132, 199, 0.08);
  --color-accent-glow:  rgba(2, 132, 199, 0.18);

  --color-text:         #374151;
  --color-text-strong:  #111827;
  --color-text-heading: #0F172A;
  --color-text-muted:   #6B7280;
  --color-text-subtle:  #9CA3AF;

  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow:    0 2px 8px rgba(0, 0, 0, 0.08);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.10);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.12);
  --shadow-focus: 0 0 0 3px rgba(2, 132, 199, 0.22);
}

/* ---------------------------------------------------------
   2. Reset & Base
   --------------------------------------------------------- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
  height: 100%;
}

body {
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-text);
  background-color: var(--color-bg);
  min-height: 100%;
  display: flex;
  flex-direction: column;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Transitions enabled after page loads — prevents theme FOUC */
body.js-ready {
  transition:
    background-color var(--dur-base) var(--ease),
    color var(--dur-base) var(--ease);
}

img, svg, video {
  display: block;
  max-width: 100%;
}

a {
  color: var(--color-accent);
  text-decoration: none;
  transition: color var(--dur-fast) var(--ease);
}

a:hover {
  color: var(--color-accent-hover);
}

a:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

ul, ol { list-style: none; }

button {
  cursor: pointer;
  border: none;
  background: none;
  font-family: inherit;
  font-size: inherit;
  color: inherit;
}

input, textarea, select {
  font-family: inherit;
  font-size: inherit;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  color: var(--color-text-heading);
  line-height: 1.25;
  font-weight: 700;
}

/* ---------------------------------------------------------
   3. Layout Utilities
   --------------------------------------------------------- */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--sp-6);
}

@media (max-width: 480px) {
  .container { padding-inline: var(--sp-4); }
}

main {
  flex: 1;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* ---------------------------------------------------------
   4. Site Header
   --------------------------------------------------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--header-height);
  border-bottom: 1px solid var(--color-border);
  background-color: rgba(15, 23, 42, 0.90);
  backdrop-filter: blur(16px) saturate(160%);
  -webkit-backdrop-filter: blur(16px) saturate(160%);
}

:root[data-theme="light"] .site-header {
  background-color: rgba(240, 244, 248, 0.90);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--sp-6);
  gap: var(--sp-4);
}

/* Logo */
.site-logo {
  display: inline-flex;
  align-items: center;
  text-decoration: none;
  flex-shrink: 0;
}

.site-logo__wordmark {
  font-family: var(--font-heading);
  font-size: 1.375rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--color-text-heading);
  line-height: 1;
}

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

.site-logo:hover .site-logo__wordmark {
  opacity: 0.88;
}

.site-logo__img {
  height: 40px;
  width: auto;
  display: block;
  flex-shrink: 0;
}

@media (max-width: 480px) {
  .site-logo__img {
    height: 32px;
  }
}

/* Header right side */
.site-header__actions {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
}

.badge {
  display: inline-flex;
  align-items: center;
  font-family: var(--font-heading);
  font-size: 0.6875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-accent);
  background: var(--color-accent-dim);
  border: 1px solid rgba(6, 182, 212, 0.22);
  padding: 0.2rem 0.625rem;
  border-radius: var(--radius-full);
  white-space: nowrap;
  user-select: none;
}

:root[data-theme="light"] .badge {
  border-color: rgba(2, 132, 199, 0.28);
}

/* Theme Toggle Button */
.theme-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: var(--radius);
  background: var(--color-bg-card);
  border: 1px solid var(--color-border-solid);
  color: var(--color-text-muted);
  flex-shrink: 0;
  transition:
    background var(--dur-fast) var(--ease),
    color var(--dur-fast) var(--ease),
    border-color var(--dur-fast) var(--ease);
}

.theme-toggle:hover {
  color: var(--color-accent);
  border-color: var(--color-accent);
  background: var(--color-accent-dim);
}

.theme-toggle:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 3px;
}

.theme-toggle svg {
  width: 18px;
  height: 18px;
  pointer-events: none;
  flex-shrink: 0;
}

/* Icon visibility: dark mode shows moon, light mode shows sun */
.icon-moon { display: block; }
.icon-sun  { display: none;  }

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

/* ---------------------------------------------------------
   5. Homepage: Search Bar
   --------------------------------------------------------- */
.search-section {
  padding-top: var(--sp-8);
}

.search-bar {
  position: relative;
  display: flex;
  align-items: center;
}

.search-bar__icon {
  position: absolute;
  left: var(--sp-4);
  color: var(--color-text-muted);
  pointer-events: none;
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  transition: color var(--dur-fast) var(--ease);
}

.search-bar__input {
  width: 100%;
  height: 54px;
  padding: 0 3.25rem 0 3rem;
  font-size: 1rem;
  background: var(--color-bg-card);
  border: 1.5px solid var(--color-border-solid);
  border-radius: var(--radius-lg);
  color: var(--color-text-strong);
  box-shadow: var(--shadow-sm);
  transition:
    border-color var(--dur-fast) var(--ease),
    box-shadow var(--dur-fast) var(--ease),
    background var(--dur-fast) var(--ease);
}

.search-bar__input:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: var(--shadow-focus);
  background: var(--color-bg-elevated);
}

.search-bar:focus-within .search-bar__icon {
  color: var(--color-accent);
}

.search-bar__input::placeholder {
  color: var(--color-text-muted);
  font-size: 0.9375rem;
}

/* Keyboard shortcut hint */
.search-bar__shortcut {
  position: absolute;
  right: 3.25rem;
  font-size: 0.7rem;
  color: var(--color-text-subtle);
  border: 1px solid var(--color-border-solid);
  border-radius: var(--radius-sm);
  padding: 1px 6px;
  line-height: 1.6;
  pointer-events: none;
  user-select: none;
  font-family: var(--font-mono);
}

.search-bar__input:focus ~ .search-bar__shortcut {
  display: none;
}

/* Clear button */
.search-bar__clear {
  position: absolute;
  right: var(--sp-3);
  display: none;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--color-bg-hover);
  color: var(--color-text-muted);
  transition:
    background var(--dur-fast) var(--ease),
    color var(--dur-fast) var(--ease);
}

.search-bar__clear.is-visible {
  display: flex;
}

.search-bar__clear:hover {
  background: var(--color-accent);
  color: #fff;
}

/* ---------------------------------------------------------
   6. Homepage: Directory
   --------------------------------------------------------- */
.directory-section {
  padding-block: var(--sp-8) var(--sp-16);
}

.directory-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--sp-10) var(--sp-12);
  align-items: start;
}

@media (max-width: 900px) {
  .directory-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--sp-8);
  }
}

@media (max-width: 540px) {
  .directory-grid {
    grid-template-columns: 1fr;
    gap: var(--sp-6);
  }
}

/* Category block */
.dir-category {
  display: flex;
  flex-direction: column;
}

.dir-category__header {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  padding-bottom: var(--sp-2);
  margin-bottom: var(--sp-3);
  border-bottom: 2px solid var(--color-border-solid);
}

.dir-category__icon {
  font-size: 1.05rem;
  line-height: 1;
  flex-shrink: 0;
  user-select: none;
}

.dir-category__name {
  font-family: var(--font-heading);
  font-size: 0.8125rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.09em;
  color: var(--color-text-heading);
}

.dir-category__tools {
  display: flex;
  flex-direction: column;
}

/* Tool link */
.dir-tool {
  display: block;
  padding-block: var(--sp-1);
  padding-left: 0;
  text-decoration: none;
  transition: padding-left var(--dur-fast) var(--ease);
  border-radius: var(--radius-sm);
}

.dir-tool:hover {
  padding-left: var(--sp-2);
}

.dir-tool__name {
  display: block;
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--color-accent);
  line-height: 1.4;
  transition: color var(--dur-fast) var(--ease);
}

.dir-tool:hover .dir-tool__name {
  color: var(--color-accent-hover);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.dir-tool__desc {
  display: block;
  font-size: 0.8rem;
  color: var(--color-text-muted);
  line-height: 1.45;
  margin-top: 1px;
}

/* Search hidden states */
.dir-category--hidden { display: none !important; }
.dir-tool--hidden     { display: none !important; }

/* No results */
.no-results {
  display: none;
  grid-column: 1 / -1;
  text-align: center;
  padding: var(--sp-16) 0;
  color: var(--color-text-muted);
}

.no-results.is-visible { display: block; }

.no-results__emoji {
  font-size: 3rem;
  margin-bottom: var(--sp-4);
  line-height: 1;
}

.no-results__title {
  font-family: var(--font-heading);
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--color-text-strong);
  margin-bottom: var(--sp-2);
}

.no-results__hint {
  font-size: 0.9375rem;
  color: var(--color-text-muted);
}

/* ---------------------------------------------------------
   7. Ad Slots
   --------------------------------------------------------- */
.ad-slot {
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px dashed var(--color-border-solid);
  border-radius: var(--radius);
  background: var(--color-bg-card);
  color: var(--color-text-subtle);
  font-size: 0.6875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  user-select: none;
  pointer-events: none;
  opacity: 0.7;
}

.ad-slot--leaderboard {
  width: 100%;
  min-height: 90px;
  margin-block: var(--sp-6);
}

.ad-slot--footer {
  width: 100%;
  min-height: 60px;
  margin-bottom: var(--sp-6);
}

/* ---------------------------------------------------------
   8. Site Footer
   --------------------------------------------------------- */
.site-footer {
  border-top: 1px solid var(--color-border);
  background: var(--color-bg-card);
  margin-top: auto;
}

.site-footer__inner {
  max-width: var(--container-max);
  margin-inline: auto;
  padding: var(--sp-8) var(--sp-6) var(--sp-6);
}

.site-footer__bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-4);
}

.site-footer__copy {
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

.site-footer__nav {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-2) var(--sp-6);
}

.site-footer__nav a {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  transition: color var(--dur-fast) var(--ease);
}

.site-footer__nav a:hover {
  color: var(--color-accent);
}

.site-footer__tagline {
  margin-top: var(--sp-4);
  padding-top: var(--sp-4);
  border-top: 1px solid var(--color-border);
  text-align: center;
  font-size: 0.8125rem;
  color: var(--color-text-subtle);
}

/* ---------------------------------------------------------
   9. Favorites Section
   --------------------------------------------------------- */

/* Section wrapper */
.fav-section {
  margin-bottom: var(--sp-8);
}

/* Header row */
.fav-section__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: var(--sp-2);
  margin-bottom: var(--sp-3);
  border-bottom: 2px solid var(--color-border-solid);
}

/* Title — matches category heading style */
.fav-section__title {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  font-family: var(--font-heading);
  font-size: 0.8125rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.09em;
  color: var(--color-text-heading);
  user-select: none;
}

.fav-section__title-icon {
  font-size: 1.05rem;
  line-height: 1;
  flex-shrink: 0;
}

/* Collapse toggle button */
.fav-section__toggle {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-1);
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--color-text-muted);
  padding: var(--sp-1) var(--sp-2);
  border-radius: var(--radius-sm);
  transition:
    color var(--dur-fast) var(--ease),
    background var(--dur-fast) var(--ease);
}

.fav-section__toggle:hover {
  color: var(--color-text);
  background: var(--color-bg-hover);
}

.fav-section__toggle:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

/* Chevron rotates when section is collapsed */
.fav-section__toggle-chevron {
  width: 14px;
  height: 14px;
  flex-shrink: 0;
  transition: transform var(--dur-base) var(--ease);
}

.fav-section--collapsed .fav-section__toggle-chevron {
  transform: rotate(180deg);
}

/* Collapsible body */
.fav-section__body {
  overflow: hidden;
}

.fav-section--collapsed .fav-section__body {
  display: none;
}

/* Flex row of favorite tool pills */
.fav-section__tools {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-2);
  min-height: 2rem;
}

/* Placeholder shown when no tools are favorited */
.fav-section__placeholder {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  font-size: 0.875rem;
  color: var(--color-text-muted);
  font-style: italic;
  padding: var(--sp-1) 0;
}

/* localStorage warning footnote */
.fav-section__note {
  margin-top: var(--sp-3);
  font-size: 0.75rem;
  color: var(--color-text-subtle);
}

/* Favorite tool pill */
.fav-tool {
  display: inline-flex;
  align-items: stretch;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border-solid);
  border-radius: var(--radius-full);
  overflow: hidden;
  transition:
    border-color var(--dur-fast) var(--ease),
    background var(--dur-fast) var(--ease);
}

.fav-tool:hover {
  border-color: var(--color-accent);
  background: var(--color-accent-dim);
}

/* Link part of the pill */
.fav-tool__link {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  padding: var(--sp-1) var(--sp-1) var(--sp-1) var(--sp-3);
  text-decoration: none;
  color: var(--color-text);
  font-size: 0.8125rem;
  font-weight: 500;
  white-space: nowrap;
  transition: color var(--dur-fast) var(--ease);
}

.fav-tool__link:hover {
  color: var(--color-accent);
}

.fav-tool__icon {
  font-size: 0.875rem;
  line-height: 1;
  flex-shrink: 0;
}

/* Remove (×) button */
.fav-tool__remove {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  padding: 0;
  flex-shrink: 0;
  border-left: 1px solid var(--color-border-solid);
  color: var(--color-text-subtle);
  border-radius: 0;
  transition:
    color var(--dur-fast) var(--ease),
    background var(--dur-fast) var(--ease);
}

.fav-tool__remove:hover {
  color: #fff;
  background: var(--color-accent);
}

.fav-tool__remove:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: -2px;
}

/* ---------------------------------------------------------
   10. Directory tool star buttons
   --------------------------------------------------------- */

/* Wrapper — replaces the bare <a> in the directory list */
.dir-tool-wrap {
  display: flex;
  align-items: flex-start;
  gap: var(--sp-1);
}

/* The link fills remaining space */
.dir-tool-wrap .dir-tool {
  flex: 1;
  min-width: 0;
}

/* Star button — sits to the right of the tool link */
.dir-tool__star {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 22px;
  height: 22px;
  margin-top: 4px; /* align with first line of text */
  border-radius: var(--radius-sm);
  color: var(--color-text-subtle);
  opacity: 0.3;
  transition:
    opacity var(--dur-fast) var(--ease),
    color var(--dur-fast) var(--ease);
}

.dir-tool-wrap:hover .dir-tool__star,
.dir-tool__star:focus-visible {
  opacity: 0.75;
}

.dir-tool__star:hover {
  opacity: 1;
  color: var(--color-accent);
}

.dir-tool__star:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

/* Starred state — always fully visible, golden color */
.dir-tool__star.is-starred {
  opacity: 1;
  color: #F59E0B;
}

.dir-tool__star svg {
  width: 14px;
  height: 14px;
  pointer-events: none;
}

/* Fill star polygon when starred */
.dir-tool__star.is-starred svg polygon {
  fill: currentColor;
}