/*
Theme Name: FilterSmart
Theme URI: https://filtersmartwater.com
Author: David Zuniga
Author URI: https://filtersmartwater.com
Description: Custom editorial theme for FilterSmart Water — a water filtration review and education hub. Built from scratch to replace page-builder themes with a lightweight, fast, fully owned codebase.
Version: 1.0.0
Requires at least: 6.0
Requires PHP: 7.4
License: GNU General Public License v2 or later
License URI: LICENSE
Text Domain: filtersmart
*/

/* ==========================================================================
   1. Design tokens
   ========================================================================== */

:root {
  --color-ink: #16302E;
  --color-ink-soft: #3C5250;
  --color-bg: #F7F8F6;
  --color-bg-alt: #EAF0EE;
  --color-panel: #FFFFFF;
  --color-border: #D8DDD9;
  --color-copper: #B5652E;
  --color-copper-dark: #914E22;
  --color-aqua: #2F8F86;
  --color-aqua-dark: #226E67;

  --font-display: "Fraunces", "Iowan Old Style", "Georgia", serif;
  --font-body: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;

  --measure: 68ch;
  --radius-sm: 3px;
  --radius-md: 6px;

  --space-1: 0.5rem;
  --space-2: 1rem;
  --space-3: 1.75rem;
  --space-4: 3rem;
  --space-5: 5rem;
}

/* ==========================================================================
   2. Reset & base
   ========================================================================== */

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

html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }

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

body {
  margin: 0;
  background: var(--color-bg);
  color: var(--color-ink);
  font-family: var(--font-body);
  font-size: 1.0625rem;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; height: auto; display: block; }

a { color: var(--color-aqua-dark); text-decoration-thickness: 1px; text-underline-offset: 0.15em; }
a:hover { color: var(--color-copper); }

h1, h2, h3, h4 {
  font-family: var(--font-display);
  color: var(--color-ink);
  line-height: 1.15;
  margin: 0 0 0.5em;
  font-weight: 600;
}

h1 { font-size: clamp(2.1rem, 4vw, 3.4rem); font-weight: 500; }
h2 { font-size: clamp(1.5rem, 2.6vw, 2.1rem); }
h3 { font-size: 1.2rem; }

p { margin: 0 0 1.1em; max-width: var(--measure); }

.container {
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 var(--space-3);
}

.visually-hidden {
  position: absolute !important;
  clip: rect(1px, 1px, 1px, 1px);
  width: 1px; height: 1px; overflow: hidden; white-space: nowrap;
}

/* Focus visibility */
a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible {
  outline: 2px solid var(--color-copper);
  outline-offset: 2px;
}

/* ==========================================================================
   3. Header
   ========================================================================== */

.site-header {
  border-bottom: 1px solid var(--color-border);
  background: var(--color-panel);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  padding: var(--space-2) 0;
}

.site-branding { display: flex; flex-direction: column; }

.site-title {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 600;
  margin: 0;
  letter-spacing: -0.01em;
}

.site-title a { color: var(--color-ink); text-decoration: none; }

.site-description {
  font-size: 0.82rem;
  color: var(--color-ink-soft);
  margin-top: 0.15em;
}

.primary-navigation ul {
  display: flex;
  gap: var(--space-3);
  list-style: none;
  margin: 0;
  padding: 0;
}

.primary-navigation a {
  color: var(--color-ink);
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 500;
  border-bottom: 2px solid transparent;
  padding-bottom: 2px;
}

.primary-navigation a:hover,
.primary-navigation a:focus {
  border-bottom-color: var(--color-copper);
  color: var(--color-ink);
}

.menu-toggle {
  display: none;
  background: none;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 0.4em 0.7em;
  font-size: 0.9rem;
  color: var(--color-ink);
}

@media (max-width: 720px) {
  .menu-toggle { display: inline-block; }
  .primary-navigation { width: 100%; display: none; }
  .primary-navigation.is-open { display: block; }
  .primary-navigation ul { flex-direction: column; gap: 0; }
  .primary-navigation li { border-top: 1px solid var(--color-border); }
  .primary-navigation a { display: block; padding: 0.75em 0; }
  .site-header__inner { flex-wrap: wrap; }
}

/* ==========================================================================
   4. Hero
   ========================================================================== */

.hero {
  padding: var(--space-5) 0 var(--space-4);
  border-bottom: 1px solid var(--color-border);
}

.hero__grid {
  display: grid;
  grid-template-columns: 1.3fr 0.9fr;
  gap: var(--space-4);
  align-items: end;
}

@media (max-width: 860px) {
  .hero__grid { grid-template-columns: 1fr; gap: var(--space-3); }
}

.hero__eyebrow {
  font-family: var(--font-body);
  font-size: 0.92rem;
  color: var(--color-aqua-dark);
  font-weight: 600;
  margin-bottom: 0.6em;
}

.hero__lede {
  font-size: 1.15rem;
  color: var(--color-ink-soft);
  max-width: 46ch;
}

.hero__stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-top: 1px solid var(--color-border);
  padding-top: var(--space-2);
}

.hero__stat + .hero__stat { border-left: 1px solid var(--color-border); padding-left: var(--space-2); }

.hero__stat-figure {
  font-family: var(--font-display);
  font-size: 1.8rem;
  color: var(--color-copper);
  display: block;
}

.hero__stat-label {
  font-size: 0.82rem;
  color: var(--color-ink-soft);
}

/* ==========================================================================
   5. Homepage sections
   ========================================================================== */

.home-section { padding: var(--space-5) 0; }
.home-section--alt { background: var(--color-bg-alt); }

.home-section__head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: var(--space-2);
  margin-bottom: var(--space-3);
  border-bottom: 1px solid var(--color-border);
  padding-bottom: var(--space-2);
}

.home-section__kicker {
  font-size: 0.92rem;
  color: var(--color-ink-soft);
  max-width: 52ch;
  margin: 0;
}

.home-section__link {
  white-space: nowrap;
  font-weight: 600;
  font-size: 0.92rem;
  text-decoration: none;
}

/* Reviews: ranked list treatment (these are genuinely ranked picks) */
.review-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-3);
}

@media (max-width: 900px) { .review-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 600px) { .review-grid { grid-template-columns: 1fr; } }

.review-card {
  background: var(--color-panel);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-2);
  position: relative;
}

.review-card__rank {
  font-family: var(--font-display);
  font-size: 0.9rem;
  color: var(--color-copper);
  display: block;
  margin-bottom: 0.4em;
}

.review-card__title {
  font-size: 1.05rem;
  margin-bottom: 0.3em;
}

.review-card__title a { color: var(--color-ink); text-decoration: none; }
.review-card__title a:hover { color: var(--color-copper); }

.review-card__excerpt {
  font-size: 0.92rem;
  color: var(--color-ink-soft);
  margin-bottom: 0;
}

/* System types & innovations: plain list treatment, no cards */
.post-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0 var(--space-3);
}

@media (max-width: 700px) { .post-list { grid-template-columns: 1fr; } }

.post-list li {
  padding: var(--space-2) 0;
  border-top: 1px solid var(--color-border);
}

.post-list a {
  font-family: var(--font-display);
  font-size: 1.1rem;
  color: var(--color-ink);
  text-decoration: none;
}

.post-list a:hover { color: var(--color-copper); }

.post-list p {
  font-size: 0.9rem;
  color: var(--color-ink-soft);
  margin: 0.3em 0 0;
}

/* ==========================================================================
   6. Generic content (pages, single posts, archives)
   ========================================================================== */

.page-content, .single-content, .archive-content {
  padding: var(--space-4) 0;
}

.entry-header { margin-bottom: var(--space-3); }

.entry-title { margin-bottom: 0.3em; }

.entry-meta {
  font-size: 0.85rem;
  color: var(--color-ink-soft);
}

.entry-content > * { max-width: var(--measure); }

.entry-content img,
.entry-content figure { max-width: 100%; }

.entry-content blockquote {
  border-left: 3px solid var(--color-copper);
  margin: var(--space-2) 0;
  padding-left: var(--space-2);
  font-style: italic;
  color: var(--color-ink-soft);
}

.archive-title { border-bottom: 1px solid var(--color-border); padding-bottom: var(--space-2); }

.post-list-item { padding: var(--space-3) 0; border-top: 1px solid var(--color-border); }
.post-list-item__title { font-size: 1.3rem; margin-bottom: 0.3em; }
.post-list-item__title a { color: var(--color-ink); text-decoration: none; }
.post-list-item__title a:hover { color: var(--color-copper); }

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

.pagination a, .pagination span {
  font-size: 0.9rem;
  text-decoration: none;
}

/* Comments */
.comments-area { margin-top: var(--space-4); border-top: 1px solid var(--color-border); padding-top: var(--space-3); }
.comment-list { list-style: none; margin: 0; padding: 0; }
.comment-list article { padding: var(--space-2) 0; border-bottom: 1px solid var(--color-border); }
.comment-form input[type="text"],
.comment-form input[type="email"],
.comment-form textarea {
  width: 100%;
  font-family: var(--font-body);
  padding: 0.6em;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  margin-bottom: var(--space-2);
  background: var(--color-panel);
  color: var(--color-ink);
}

/* ==========================================================================
   7. Buttons
   ========================================================================== */

.btn {
  display: inline-block;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 0.92rem;
  padding: 0.7em 1.3em;
  border-radius: var(--radius-sm);
  text-decoration: none;
  border: 1px solid transparent;
}

.btn--primary { background: var(--color-copper); color: #fff; }
.btn--primary:hover { background: var(--color-copper-dark); color: #fff; }

.btn--ghost { border-color: var(--color-ink); color: var(--color-ink); }
.btn--ghost:hover { border-color: var(--color-copper); color: var(--color-copper); }

/* ==========================================================================
   8. Sidebar & widgets
   ========================================================================== */

.content-with-sidebar {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: var(--space-4);
}

@media (max-width: 860px) { .content-with-sidebar { grid-template-columns: 1fr; } }

.widget { margin-bottom: var(--space-3); }
.widget-title { font-size: 1.05rem; margin-bottom: 0.5em; }
.widget ul { list-style: none; margin: 0; padding: 0; }
.widget li { padding: 0.4em 0; border-top: 1px solid var(--color-border); }

/* ==========================================================================
   9. Footer
   ========================================================================== */

.site-footer {
  background: var(--color-ink);
  color: #DCE6E4;
  padding: var(--space-4) 0 var(--space-2);
  margin-top: var(--space-5);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: var(--space-3);
  padding-bottom: var(--space-3);
  border-bottom: 1px solid rgba(255,255,255,0.15);
}

@media (max-width: 780px) { .footer-grid { grid-template-columns: 1fr 1fr; } }

.footer-grid h3 {
  color: #fff;
  font-size: 0.95rem;
  font-family: var(--font-body);
  font-weight: 600;
  margin-bottom: 0.75em;
}

.footer-grid ul { list-style: none; margin: 0; padding: 0; }
.footer-grid li { margin-bottom: 0.5em; }
.footer-grid a { color: #B9CBC8; text-decoration: none; font-size: 0.92rem; }
.footer-grid a:hover { color: #fff; }

.footer-about p { color: #B9CBC8; font-size: 0.92rem; }

.footer-social { display: flex; gap: var(--space-2); }
.footer-social a {
  width: 34px; height: 34px;
  display: flex; align-items: center; justify-content: center;
  border: 1px solid rgba(255,255,255,0.25);
  border-radius: 50%;
}

.site-footer__bottom {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-1);
  padding-top: var(--space-2);
  font-size: 0.82rem;
  color: #8FA6A2;
}

/* Skip link */
.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--color-ink);
  color: #fff;
  padding: 0.6em 1em;
  z-index: 999;
}
.skip-link:focus { left: var(--space-2); top: var(--space-2); }