/* ============================================================
   Six3X — cordless drill & impact driver comparison site
   Industrial editorial system: paper surfaces, ink text,
   safety-orange accent, Clash Display + Satoshi
   ============================================================ */

:root,
[data-theme='light'] {
  /* Surfaces — warm workshop paper */
  --color-bg: #f5f3ee;
  --color-surface: #fbfaf7;
  --color-surface-2: #ffffff;
  --color-surface-offset: #ecebe4;
  --color-surface-offset-2: #e2e0d7;
  --color-divider: #d9d6cd;
  --color-border: #c8c4b8;

  /* Text — graphite ink */
  --color-text: #1d1b17;
  --color-text-muted: #6a675e;
  --color-text-faint: #a09d92;
  --color-text-inverse: #f7f5f0;

  /* Accent — safety orange */
  --color-primary: #c2410c;
  --color-primary-hover: #9a3412;
  --color-primary-active: #7c2d12;
  --color-primary-highlight: #f5d9c8;

  /* Supporting steel blue for tables of the "other" brand */
  --color-steel: #1e4e79;
  --color-steel-highlight: #d9e6f0;

  --shadow-sm: 0 1px 2px rgba(29, 27, 23, 0.06);
  --shadow-md: 0 4px 14px rgba(29, 27, 23, 0.09);
  --shadow-lg: 0 14px 40px rgba(29, 27, 23, 0.16);

  --radius-sm: 0.375rem;
  --radius-md: 0.625rem;
  --radius-lg: 0.875rem;

  --font-display: 'Clash Display', 'Archivo', 'Helvetica Neue', sans-serif;
  --font-body: 'Satoshi', 'Inter', 'Helvetica Neue', sans-serif;

  --content-narrow: 680px;
  --content-default: 1080px;

  --transition-interactive: 180ms cubic-bezier(0.16, 1, 0.3, 1);
}

/* ---------- Base ---------- */

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  -webkit-text-size-adjust: none;
  text-size-adjust: none;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  scroll-behavior: smooth;
  scroll-padding-top: var(--space-20, 5rem);
  hanging-punctuation: first last;
}

body {
  min-height: 100dvh;
  line-height: 1.65;
  font-family: var(--font-body, sans-serif);
  font-size: var(--text-base);
  color: var(--color-text);
  background-color: var(--color-bg);
}

img,
picture,
video,
canvas,
svg {
  display: block;
  max-width: 100%;
  height: auto;
}

h1,
h2,
h3,
h4 {
  font-family: var(--font-display);
  text-wrap: balance;
  line-height: 1.12;
  letter-spacing: -0.01em;
}

p,
li,
figcaption {
  text-wrap: pretty;
  max-width: 72ch;
}

::selection {
  background: var(--color-primary-highlight);
  color: var(--color-text);
}

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

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

a {
  color: var(--color-primary);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
  transition: color var(--transition-interactive);
}

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

table {
  border-collapse: collapse;
  width: 100%;
}

/* ---------- Type scale ---------- */

:root {
  --text-xs: clamp(0.75rem, 0.7rem + 0.25vw, 0.875rem);
  --text-sm: clamp(0.875rem, 0.8rem + 0.35vw, 1rem);
  --text-base: clamp(1rem, 0.95rem + 0.25vw, 1.125rem);
  --text-lg: clamp(1.125rem, 1rem + 0.75vw, 1.5rem);
  --text-xl: clamp(1.5rem, 1.2rem + 1.25vw, 2.25rem);
  --text-2xl: clamp(2rem, 1.2rem + 2.5vw, 3.5rem);
  --text-3xl: clamp(2.5rem, 1rem + 4vw, 5rem);

  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;
}

/* ---------- Header ---------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: color-mix(in oklab, var(--color-bg) 88%, transparent);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-divider);
}

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

.wordmark {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-display);
  font-weight: 600;
  font-size: var(--text-lg);
  color: var(--color-text);
  text-decoration: none;
  letter-spacing: 0.01em;
}

.wordmark__slash {
  color: var(--color-primary);
  font-weight: 700;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: var(--space-6);
  font-size: var(--text-sm);
}

.site-nav a {
  color: var(--color-text-muted);
  text-decoration: none;
  font-weight: 500;
  white-space: nowrap;
}

.site-nav a:hover,
.site-nav a[aria-current='page'] {
  color: var(--color-primary);
}

@media (max-width: 640px) {
  .site-header__inner {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-2);
    padding-block: var(--space-3);
  }
  .site-nav {
    width: 100%;
    justify-content: space-between;
    gap: var(--space-2);
  }
  .site-nav .site-nav__secondary {
    display: none;
  }
}

/* ---------- Hero ---------- */

.guide-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-6);
  margin-bottom: var(--space-12);
}
.guide-card {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  padding: var(--space-6);
  background: #eeeae2;
  border: 1px solid #d5d0c6;
  border-top: 3px solid var(--color-primary);
  text-decoration: none;
  color: var(--color-text);
}
.guide-card:hover, .guide-card:focus-visible { background: #e6e0d5; }
.guide-card__number { font-family: 'Clash Display', sans-serif; font-size: 2.8rem; line-height: 1; margin-bottom: var(--space-6); color: #a43208; }
.guide-card__label { font-size: .75rem; font-weight: 700; text-transform: uppercase; letter-spacing: .07em; margin-bottom: var(--space-3); }
.guide-card h3 { font-size: 1.35rem; line-height: 1.2; margin-bottom: var(--space-4); }
.guide-card p { font-size: .95rem; line-height: 1.65; margin-bottom: var(--space-6); }
.guide-card__cta { margin-top: auto; font-weight: 700; font-size: .9rem; color: #a43208; }
.guide-deck { margin-top: var(--space-6); line-height: 1.7; color: var(--color-text-muted); }
.guide-answer { padding: var(--space-6); border-left: 4px solid var(--color-primary); background: #eeeae2; margin-bottom: var(--space-6); }
.guide-answer__label { font-size: .75rem; font-weight: 700; text-transform: uppercase; letter-spacing: .1em; color: #a43208; }
.guide-answer p:last-child { margin-bottom: 0; }
.guide-method { font-size: .88rem; }
.guide-contents { padding-block: var(--space-6); border-block: 1px solid #d5d0c6; margin-block: var(--space-8); }
.guide-contents h2 { margin-top: 0; }
.guide-related { padding-top: var(--space-6); border-top: 1px solid #d5d0c6; margin-top: var(--space-10); }
.guide-page section { scroll-margin-top: 100px; }
.guide-page section h2 { margin-bottom: var(--space-4); }
.guide-page section p + p { margin-top: var(--space-4); }
.guide-page section ul + p, .guide-related ul + p { margin-top: var(--space-4); }
@media (max-width: 900px) { .guide-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 640px) {
  .guide-grid { grid-template-columns: minmax(0, 1fr); }
  .site-nav { flex-wrap: wrap; row-gap: var(--space-3); }
  .section-head { gap: var(--space-4); flex-wrap: wrap; }
}

.hero {
  position: relative;
  background: var(--color-text);
  color: var(--color-text-inverse);
  overflow: hidden;
}

.hero__media {
  width: 100%;
  height: clamp(320px, 52vh, 520px);
  object-fit: cover;
  opacity: 0.72;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  background: linear-gradient(to top, rgba(20, 18, 15, 0.88) 0%, rgba(20, 18, 15, 0.25) 60%, rgba(20, 18, 15, 0.05) 100%);
  pointer-events: none;
}

.hero__content {
  position: absolute;
  inset: 0;
  z-index: 2;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: var(--space-10) var(--space-6) var(--space-12);
  max-width: var(--content-default);
  margin-inline: auto;
  width: 100%;
}

.hero__kicker {
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-primary-highlight);
  margin-bottom: var(--space-3);
}

.hero__title {
  font-size: var(--text-3xl);
  font-weight: 600;
  max-width: 18ch;
  color: #ffffff;
}

.hero__lede {
  font-size: var(--text-lg);
  color: rgba(247, 245, 240, 0.88);
  max-width: 56ch;
  margin-top: var(--space-4);
  font-weight: 400;
  line-height: 1.5;
}

/* ---------- Page scaffolding ---------- */

.page {
  max-width: var(--content-default);
  margin-inline: auto;
  padding: var(--space-12) var(--space-6) var(--space-24);
}

.page__header {
  max-width: var(--content-narrow);
  margin: 0 auto var(--space-10);
  text-align: center;
}

.page__kicker {
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: var(--space-3);
}

.page__title {
  font-size: var(--text-2xl);
  font-weight: 600;
}

.page__meta {
  margin-top: var(--space-4);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

/* ---------- Article layout ---------- */

.article {
  max-width: var(--content-narrow);
  margin-inline: auto;
}

.article__body {
  display: grid;
  gap: var(--space-6);
}

.article__body h2 {
  font-size: var(--text-xl);
  margin-top: var(--space-8);
  scroll-margin-top: var(--space-20);
}

.article__body h3 {
  font-size: var(--text-lg);
  margin-top: var(--space-6);
  font-family: var(--font-body);
  font-weight: 700;
}

.article__body p {
  color: var(--color-text);
}

.article__body ul,
.article__body ol {
  padding-left: 1.25rem;
  display: grid;
  gap: var(--space-2);
}

.article__body li::marker {
  color: var(--color-primary);
  font-weight: 700;
}

.lede {
  font-size: var(--text-lg);
  color: var(--color-text-muted);
  line-height: 1.55;
}

/* ---------- Spec tables ---------- */

.spec-wrap {
  overflow-x: auto;
  margin-block: var(--space-8);
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-lg);
  background: var(--color-surface);
  box-shadow: var(--shadow-sm);
  -webkit-overflow-scrolling: touch;
}

.spec-table {
  min-width: 560px;
  font-size: var(--text-sm);
}

.spec-table th,
.spec-table td {
  padding: var(--space-3) var(--space-4);
  text-align: left;
  border-bottom: 1px solid var(--color-divider);
  vertical-align: top;
}

.spec-table thead th {
  font-family: var(--font-display);
  font-size: var(--text-base);
  background: var(--color-surface-offset);
  border-bottom: 2px solid var(--color-border);
  white-space: nowrap;
}

.spec-table tbody th {
  font-weight: 700;
  color: var(--color-text-muted);
  white-space: nowrap;
}

.spec-table tbody tr:last-child th,
.spec-table tbody tr:last-child td {
  border-bottom: none;
}

.spec-table td strong {
  color: var(--color-primary);
}

.spec-table .col-steel strong {
  color: var(--color-steel);
}

.spec-table tbody tr:hover {
  background: var(--color-surface-2);
}

/* ---------- Verdict / callout ---------- */

.verdict {
  border: 1px solid var(--color-primary);
  border-radius: var(--radius-lg);
  background: linear-gradient(in oklab, var(--color-primary-highlight), var(--color-surface));
  padding: var(--space-8);
  margin-block: var(--space-10);
}

.verdict__kicker {
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: var(--space-2);
}

.verdict__title {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  margin-bottom: var(--space-3);
}

.verdict p {
  color: var(--color-text);
}

.callout {
  border-left: 3px solid var(--color-primary);
  background: var(--color-surface);
  padding: var(--space-4) var(--space-6);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  margin-block: var(--space-6);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

/* ---------- Card grid ---------- */

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-6);
  margin-top: var(--space-10);
}

.card {
  background: var(--color-surface);
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-lg);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  text-decoration: none;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-interactive), box-shadow var(--transition-interactive);
}

.card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
}

.card__media {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

.card__body {
  padding: var(--space-5);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  flex: 1;
}

.card__kicker {
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-primary);
}

.card__title {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  color: var(--color-text);
  line-height: 1.2;
}

.card__desc {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  flex: 1;
}

.card__cta {
  font-size: var(--text-sm);
  font-weight: 700;
  color: var(--color-primary);
  margin-top: var(--space-2);
}

/* ---------- Section headings on home ---------- */

.section-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--space-4);
  margin-top: var(--space-20);
  margin-bottom: var(--space-2);
}

.section-head h2 {
  font-size: var(--text-xl);
}

.section-head .section-head__link {
  font-size: var(--text-sm);
  font-weight: 600;
  white-space: nowrap;
}

/* ---------- Winner badges ---------- */

.badge {
  display: inline-block;
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: var(--space-1) var(--space-3);
  border-radius: 999px;
  background: var(--color-primary);
  color: #fff;
  white-space: nowrap;
}

.badge--steel {
  background: var(--color-steel);
}

.badge--ghost {
  background: var(--color-surface-offset);
  color: var(--color-text-muted);
}

/* ---------- Sources list ---------- */

.sources {
  margin-top: var(--space-16);
  padding-top: var(--space-6);
  border-top: 1px solid var(--color-divider);
}

.sources h2 {
  font-size: var(--text-lg);
  margin-bottom: var(--space-4);
}

.sources ol {
  padding-left: 1.25rem;
  display: grid;
  gap: var(--space-2);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

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

.site-footer {
  background: var(--color-text);
  color: var(--color-text-inverse);
  padding: var(--space-16) var(--space-6) var(--space-10);
}

.site-footer__inner {
  max-width: var(--content-default);
  margin-inline: auto;
  display: grid;
  gap: var(--space-10);
}

.site-footer__grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: var(--space-10);
}

@media (max-width: 720px) {
  .site-footer__grid {
    grid-template-columns: 1fr;
    gap: var(--space-8);
  }
}

.site-footer h3 {
  font-size: var(--text-sm);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-text-faint);
  margin-bottom: var(--space-3);
  font-family: var(--font-body);
  font-weight: 700;
}

.site-footer ul {
  list-style: none;
  display: grid;
  gap: var(--space-2);
}

.site-footer a {
  color: rgba(247, 245, 240, 0.85);
  text-decoration: none;
  font-size: var(--text-sm);
}

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

.site-footer__about {
  font-size: var(--text-sm);
  color: rgba(247, 245, 240, 0.7);
  max-width: 44ch;
}

.site-footer__disclosure {
  font-size: var(--text-xs);
  color: rgba(247, 245, 240, 0.55);
  border-top: 1px solid rgba(247, 245, 240, 0.15);
  padding-top: var(--space-6);
  max-width: 90ch;
}

/* ---------- Small helpers ---------- */

.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--color-primary);
  color: #fff;
  padding: var(--space-3) var(--space-5);
  border-radius: var(--radius-md);
  z-index: 100;
}

.skip-link:focus {
  left: var(--space-4);
  top: var(--space-4);
}

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

.price-note {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  margin-top: var(--space-2);
}

/* Widen spec tables beyond the article text column on desktop (tablets and up
   scroll horizontally instead, so the article column is never overlapped) */
@media (min-width: 1024px) {
  .article .spec-wrap {
    margin-inline: -80px;
    width: calc(100% + 160px);
    max-width: calc(100% + 160px);
  }
}