/* ---------- Reset & base ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-padding-top: var(--header-height); }
@media (prefers-reduced-motion: no-preference) {
  html { scroll-behavior: smooth; }
}
body {
  margin: 0;
  background: var(--color-bg);
  color: var(--color-ink);
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
img, svg { display: block; max-width: 100%; }
a { color: inherit; }

h1, h2, h3 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.2;
  margin: 0 0 0.5rem;
}

/* ---------- Custom properties ---------- */
:root {
  /* chrissabato.com is a light site: white content pages, a dark
     sidebar/footer, and a saturated blue hero/photo treatment. */
  --color-bg: #fff;
  --color-surface: #f5f7f9;
  --color-header: #151719;
  --color-white: #fff;
  --color-ink: #16181f;
  --color-text-muted: #5b5f6d;
  --color-muted-on-dark: #b7bac4;
  --color-accent: #375dff;
  --color-accent-hover: #0434ff;
  --border-subtle: rgba(15, 20, 30, 0.1);
  --border-subtle-on-dark: rgba(255, 255, 255, 0.14);

  --color-cat-broadcast: var(--color-accent);
  --color-cat-hardware: var(--color-accent);
  --color-cat-stats: var(--color-accent);
  --color-cat-media: var(--color-accent);
  --color-cat-personal: var(--color-accent);

  --font-heading: 'Montserrat', Helvetica, sans-serif;
  --font-body: 'Roboto', Helvetica, sans-serif;

  --header-height: 64px;
  --sidebar-width: 280px;
  --max-width: 1200px;
}

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

.skip-link {
  position: absolute;
  top: -100%;
  left: 1rem;
  z-index: 1000;
  background: var(--color-accent);
  color: var(--color-white);
  padding: 0.75rem 1.25rem;
  border-radius: 0 0 8px 8px;
  font-weight: 500;
  transition: top 0.2s ease;
}
.skip-link:focus {
  top: 0;
}

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

.icon, svg use {
  width: 1em;
  height: 1em;
}

/* ---------- Sidebar ---------- */
.sidebar {
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  z-index: 200;
  width: var(--sidebar-width);
  background: var(--color-header);
  border-right: 1px solid var(--border-subtle-on-dark);
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 2.5rem 1.75rem;
  overflow-y: auto;
}
.sidebar__logo {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  color: var(--color-white);
  text-align: center;
}
.sidebar__logo img { width: 44px; height: 44px; }
.sidebar__logo span {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.15rem;
}

.sidebar__divider {
  width: 32px;
  height: 1px;
  background: rgba(255, 255, 255, 0.2);
  margin: 1.75rem 0;
  flex-shrink: 0;
}

.primary-nav {
  display: flex;
  flex-direction: column;
  align-items: stretch;
  gap: 0.15rem;
  width: 100%;
}
.primary-nav a {
  text-decoration: none;
  color: var(--color-muted-on-dark);
  font-family: var(--font-heading);
  font-size: 0.95rem;
  font-weight: 600;
  text-align: center;
  padding: 0.6rem 0.5rem;
  border-left: 3px solid transparent;
  transition: color 0.2s ease-out, border-color 0.2s ease-out;
}
.primary-nav a:hover,
.primary-nav a.is-active {
  color: var(--color-white);
}
.primary-nav a.is-active {
  border-left-color: var(--color-accent);
}

.sidebar__footer-links {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.6rem;
}
.sidebar__footer-links a {
  color: var(--color-muted-on-dark);
  font-size: 0.85rem;
  text-decoration: none;
}
.sidebar__footer-links a:hover { color: var(--color-accent); }

/* ---------- Mobile bar ---------- */
.mobile-bar {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 210;
  height: var(--header-height);
  background: var(--color-header);
  border-bottom: 1px solid var(--border-subtle-on-dark);
  padding: 0 1.25rem;
  align-items: center;
  justify-content: space-between;
}
.mobile-bar__logo {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.05rem;
  text-decoration: none;
  color: var(--color-white);
}

.nav-toggle {
  background: none;
  border: 1px solid var(--border-subtle-on-dark);
  border-radius: 8px;
  color: var(--color-white);
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  flex-shrink: 0;
}
.nav-toggle svg { width: 22px; height: 22px; }
.nav-toggle .icon-close { display: none; }
.nav-toggle[aria-expanded="true"] .icon-open { display: none; }
.nav-toggle[aria-expanded="true"] .icon-close { display: block; }

.sidebar-overlay {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 195;
  background: rgba(0, 0, 0, 0.5);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease;
}

@media (max-width: 900px) {
  .mobile-bar { display: flex; }
  .sidebar {
    top: var(--header-height);
    padding-top: 1.75rem;
    transform: translateX(-100%);
    transition: transform 0.25s ease;
  }
  .sidebar.is-open {
    transform: translateX(0);
    box-shadow: 0 0 40px rgba(0, 0, 0, 0.4);
  }
  /* The mobile bar already shows the logo; skip repeating it in the drawer. */
  .sidebar__logo,
  .sidebar__divider--top {
    display: none;
  }
  .sidebar-overlay { display: block; }
  .sidebar-overlay.is-open {
    opacity: 1;
    pointer-events: auto;
  }
  .page {
    margin-left: 0 !important;
    padding-top: var(--header-height);
  }
}

/* ---------- Page (offset by sidebar) ---------- */
.page {
  margin-left: var(--sidebar-width);
}

/* ---------- Hero ---------- */
.hero {
  position: relative;
  overflow: hidden;
  padding: 5.5rem 1.5rem 4rem;
  text-align: center;
  color: var(--color-white);
  background:
    radial-gradient(circle at 18% 15%, rgba(255, 255, 255, 0.12), transparent 45%),
    linear-gradient(160deg, #1c3fd6 0%, #16209e 55%, #0d1442 100%);
}
.hero__watermark {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 90vh;
  max-width: 130%;
  transform: translate(-50%, -50%);
  opacity: 0.1;
  pointer-events: none;
  user-select: none;
}
.hero__content {
  position: relative;
  max-width: var(--max-width);
  margin: 0 auto;
}
.hero__eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.8rem;
  font-weight: 600;
  color: #cfd9ff;
  margin: 0 0 0.75rem;
}
.hero h1 {
  font-size: clamp(2rem, 5vw, 3rem);
  margin-bottom: 0.75rem;
}
.hero__tagline {
  color: rgba(255, 255, 255, 0.75);
  font-size: 1.1rem;
  max-width: 42em;
  margin: 0 auto;
}

/* ---------- Category sections ---------- */
main {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem 2rem;
}
.category-section {
  padding: 2.5rem 0;
  border-top: 1px solid var(--border-subtle);
}
.category-section:first-child { border-top: none; }

.category-header {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  margin-bottom: 1.75rem;
}
.category-header__icon {
  flex-shrink: 0;
  width: 28px;
  height: 28px;
  padding: 8px;
  border-radius: 10px;
  background: var(--color-surface);
  box-sizing: content-box;
}
.category-header h2 {
  font-size: 1.4rem;
  margin-bottom: 0.25rem;
}
.category-header__desc {
  color: var(--color-text-muted);
  margin: 0;
  font-size: 0.95rem;
}

.icon--broadcast { color: var(--color-cat-broadcast); }
.icon--hardware { color: var(--color-cat-hardware); }
.icon--stats { color: var(--color-cat-stats); }
.icon--media { color: var(--color-cat-media); }
.icon--personal { color: var(--color-cat-personal); }

/* ---------- Tool grid & cards ---------- */
.tool-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1.5rem;
}

.tool-card {
  background: var(--color-surface);
  border: 1px solid var(--border-subtle);
  border-top: 3px solid var(--card-accent, var(--color-accent));
  border-radius: 10px;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  transition: transform 0.15s ease, border-color 0.15s ease, box-shadow 0.15s ease;
}
.tool-card__thumb {
  aspect-ratio: 16 / 9;
  background: var(--color-header);
  border-bottom: 1px solid var(--border-subtle);
}
.tool-card__thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.tool-card__body {
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  flex: 1;
}
@media (prefers-reduced-motion: no-preference) {
  .tool-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 28px rgba(15, 20, 30, 0.12);
  }
}
.tool-card:hover {
  border-color: var(--card-accent, var(--color-accent));
}

.tool-card--broadcast { --card-accent: var(--color-cat-broadcast); }
.tool-card--hardware  { --card-accent: var(--color-cat-hardware); }
.tool-card--stats     { --card-accent: var(--color-cat-stats); }
.tool-card--media     { --card-accent: var(--color-cat-media); }
.tool-card--personal  { --card-accent: var(--color-cat-personal); }

.tool-card__top {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  margin-bottom: 0.9rem;
}
.tool-card__icon {
  width: 18px;
  height: 18px;
  color: var(--card-accent, var(--color-accent));
  flex-shrink: 0;
}
.tool-card__badge {
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--card-accent, var(--color-accent));
  background: color-mix(in srgb, var(--card-accent, var(--color-accent)) 12%, transparent);
  border: 1px solid color-mix(in srgb, var(--card-accent, var(--color-accent)) 30%, transparent);
  padding: 0.2rem 0.55rem;
  border-radius: 999px;
}

.tool-card__title {
  font-size: 1.1rem;
  margin-bottom: 0.5rem;
}
.tool-card__desc {
  color: var(--color-text-muted);
  font-size: 0.92rem;
  margin: 0 0 1.1rem;
  flex-grow: 1;
}
.tool-card__note {
  color: var(--color-text-muted);
  font-size: 0.85rem;
  font-style: italic;
  margin: 0;
}
.tool-card__note a {
  color: var(--color-accent);
  font-style: normal;
  text-decoration: none;
}
.tool-card__note a:hover { color: var(--color-accent-hover); text-decoration: underline; }

.tool-card__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.85rem;
  font-weight: 600;
  text-decoration: none;
  padding: 0.45rem 0.9rem;
  border-radius: 6px;
  border: 2px solid transparent;
  transition: background-color 0.15s ease, border-color 0.15s ease, color 0.15s ease;
}
.btn svg { width: 15px; height: 15px; }

.btn--primary {
  background: var(--color-accent);
  color: var(--color-white);
}
.btn--primary:hover { background: var(--color-accent-hover); }

.btn--secondary {
  background: transparent;
  color: var(--color-ink);
  border-color: rgba(15, 20, 30, 0.18);
}
.btn--secondary:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

/* ---------- Footer ---------- */
.site-footer {
  background: var(--color-header);
  border-top: 1px solid var(--color-accent);
  margin-top: 2rem;
}

/* ---------- Section divider ---------- */
.section-divider {
  max-width: var(--max-width);
  margin: 0 auto;
  border: none;
  border-top: 1px solid var(--color-accent);
}
.site-footer__inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 2.5rem 1.5rem;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}
.site-footer__inner a {
  text-decoration: none;
  color: var(--color-muted-on-dark);
  font-size: 0.9rem;
}
.site-footer__inner a:hover { color: var(--color-white); }
.site-footer__copyright {
  color: var(--color-muted-on-dark);
  font-size: 0.85rem;
  margin: 0;
}