/*
Theme Name: ProbeHaven
Theme URI: https://probehaven.com
Author: Hadi Jawad
Author URI: https://probehaven.com
Description: Lightweight custom theme for ProbeHaven, an independent product research initiative. Built for speed, accessibility, and editorial credibility — no page builder, no tracking, minimal JavaScript.
Version: 1.0.0
Requires at least: 6.0
Requires PHP: 7.4
License: GNU General Public License v2 or later
License URI: https://www.gnu.org/licenses/gpl-2.0.html
Text Domain: probehaven
*/

/* ==========================================================================
   Design tokens
   ========================================================================== */

:root {
  --color-bg: #faf9f6;
  --color-bg-alt: #f1efe9;
  --color-surface: #ffffff;
  --color-ink: #15181a;
  --color-ink-soft: #4c5259;
  --color-ink-faint: #767c82;
  --color-border: #e2dfd6;
  --color-border-strong: #cfcabb;
  --color-accent: #1b4b43;
  --color-accent-ink: #0f2e29;
  --color-accent-soft: #e7ede9;
  --color-focus: #1b4b43;
  --color-error: #9a3324;
  --color-error-soft: #faeae6;
  --color-success: #1b4b43;
  --color-success-soft: #e7ede9;

  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue",
    Arial, sans-serif;
  --font-serif: Georgia, "Iowan Old Style", "Palatino Linotype", Palatino, "Times New Roman",
    serif;

  --container: 1120px;
  --container-narrow: 760px;

  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.5rem;
  --space-6: 2rem;
  --space-7: 3rem;
  --space-8: 4.5rem;
  --space-9: 6rem;
  --space-10: 8rem;

  --radius-s: 2px;
  --radius-m: 4px;

  color-scheme: light;
}

/* ==========================================================================
   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;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

body {
  margin: 0;
  background: var(--color-bg);
  color: var(--color-ink);
  font-family: var(--font-sans);
  font-size: 17px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

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

a:not([class]) {
  text-decoration-thickness: 1px;
  text-underline-offset: 2px;
}

h1,
h2,
h3,
h4 {
  font-family: var(--font-serif);
  font-weight: 400;
  line-height: 1.2;
  margin: 0 0 var(--space-4);
  color: var(--color-ink);
}

h1 {
  font-size: clamp(2.1rem, 1.6rem + 2vw, 3.4rem);
  letter-spacing: -0.01em;
}

h2 {
  font-size: clamp(1.6rem, 1.4rem + 1vw, 2.2rem);
}

h3 {
  font-size: 1.3rem;
}

h4 {
  font-size: 1.05rem;
  font-family: var(--font-sans);
  font-weight: 600;
}

p {
  margin: 0 0 var(--space-4);
}

ul,
ol {
  margin: 0 0 var(--space-4);
  padding-left: 1.25em;
}

.lede {
  font-size: 1.2rem;
  color: var(--color-ink-soft);
  max-width: 42em;
}

/* Focus visibility */
:focus-visible {
  outline: 2px solid var(--color-focus);
  outline-offset: 3px;
}

/* Skip link */
.skip-link {
  position: absolute;
  left: -9999px;
  top: auto;
  background: var(--color-accent);
  color: #fff;
  padding: var(--space-3) var(--space-5);
  z-index: 1000;
  border-radius: var(--radius-m);
}

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

/* ==========================================================================
   Layout helpers
   ========================================================================== */

.container {
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--space-5);
}

.container--narrow {
  max-width: var(--container-narrow);
  margin-inline: auto;
  padding-inline: var(--space-5);
}

.section {
  padding-block: var(--space-9);
}

.section--alt {
  background: var(--color-bg-alt);
}

.section--tight {
  padding-block: var(--space-7);
}

.section-head {
  max-width: 46em;
  margin-bottom: var(--space-7);
}

.eyebrow {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: var(--space-3);
}

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

/* ==========================================================================
   Buttons
   ========================================================================== */

.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: 0.95rem;
  padding: 0.85em 1.5em;
  border-radius: var(--radius-m);
  border: 1px solid transparent;
  cursor: pointer;
  text-decoration: none;
  line-height: 1.2;
  transition: background-color 0.15s ease, color 0.15s ease, border-color 0.15s ease;
}

.btn--primary {
  background: var(--color-accent);
  color: #fff;
}

.btn--primary:hover,
.btn--primary:focus-visible {
  background: var(--color-accent-ink);
  color: #fff;
}

.btn--secondary {
  background: transparent;
  color: var(--color-ink);
  border-color: var(--color-border-strong);
}

.btn--secondary:hover,
.btn--secondary:focus-visible {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.btn--block {
  width: 100%;
  justify-content: center;
}

.cta-group {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
  margin-top: var(--space-6);
}

/* ==========================================================================
   Site header
   ========================================================================== */

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(250, 249, 246, 0.92);
  border-bottom: 1px solid var(--color-border);
}

/*
 * The translucent blur lives on a ::before layer rather than directly on
 * .site-header. `backdrop-filter` (like `transform`/`filter`) makes the
 * element it's set on the containing block for any `position: fixed`
 * descendant — which would trap the mobile off-canvas nav (a descendant of
 * the header) inside the header's own ~64px box instead of letting it cover
 * the viewport. Keeping the filter off .site-header avoids that entirely,
 * with an identical visual result.
 */
.site-header::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  backdrop-filter: saturate(140%) blur(6px);
  -webkit-backdrop-filter: saturate(140%) blur(6px);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-block: var(--space-4);
  gap: var(--space-5);
}

.site-branding {
  display: flex;
  align-items: center;
}

.site-logo {
  display: block;
  max-height: 32px;
  width: auto;
}

.site-wordmark {
  font-family: var(--font-serif);
  font-size: 1.3rem;
  letter-spacing: 0.01em;
  color: var(--color-ink);
  text-decoration: none;
}

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

.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-m);
  padding: 0.5em 0.7em;
  cursor: pointer;
  color: var(--color-ink);
}

.primary-nav {
  display: flex;
  align-items: center;
  gap: var(--space-6);
}

.primary-nav ul {
  display: flex;
  align-items: center;
  gap: var(--space-6);
  list-style: none;
  margin: 0;
  padding: 0;
}

.primary-nav a:not(.btn) {
  color: var(--color-ink-soft);
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 500;
}

.primary-nav a:not(.btn):hover,
.primary-nav a:not(.btn):focus-visible,
.primary-nav a[aria-current="page"] {
  color: var(--color-ink);
}

/*
 * The collapsible off-canvas menu is progressive enhancement: it only
 * applies once the tiny inline script in header.php has added `js` to
 * <html>. Without JavaScript the nav simply wraps in normal flow below the
 * logo, so it's always reachable.
 */
@media (max-width: 860px) {
  .js .nav-toggle {
    display: inline-flex;
    align-items: center;
    gap: 0.4em;
  }

  .js .primary-nav {
    position: fixed;
    inset: 0;
    top: 65px;
    background: var(--color-bg);
    flex-direction: column;
    align-items: flex-start;
    padding: var(--space-6) var(--space-5);
    transform: translateX(100%);
    transition: transform 0.2s ease;
    overflow-y: auto;
  }

  .js .primary-nav.is-open {
    transform: translateX(0);
  }

  .js .primary-nav ul {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-5);
    width: 100%;
  }

  .js .primary-nav a:not(.btn) {
    font-size: 1.1rem;
  }

  .js .primary-nav .btn {
    margin-top: var(--space-2);
  }

  html:not(.js) .site-header__inner {
    flex-wrap: wrap;
  }

  html:not(.js) .primary-nav ul {
    flex-wrap: wrap;
    row-gap: var(--space-3);
  }
}

/* ==========================================================================
   Hero
   ========================================================================== */

.hero {
  padding-block: var(--space-9) var(--space-8);
}

.hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
  gap: var(--space-8);
  align-items: center;
}

@media (max-width: 900px) {
  .hero__grid {
    grid-template-columns: 1fr;
  }
}

.hero h1 {
  margin-bottom: var(--space-5);
}

.hero__body {
  font-size: 1.15rem;
  color: var(--color-ink-soft);
  max-width: 40em;
}

/* ==========================================================================
   Cards / grids
   ========================================================================== */

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

.grid--3 {
  grid-template-columns: repeat(3, 1fr);
}

.grid--2 {
  grid-template-columns: repeat(2, 1fr);
}

.grid--4 {
  grid-template-columns: repeat(4, 1fr);
}

@media (max-width: 980px) {
  .grid--4 {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 780px) {
  .grid--3,
  .grid--2 {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 620px) {
  .grid--4 {
    grid-template-columns: 1fr;
  }
}

.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-m);
  padding: var(--space-6);
}

.card h3 {
  margin-bottom: var(--space-3);
}

.card p:last-child {
  margin-bottom: 0;
}

/* Numbered process list */
.process-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--color-border);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-m);
  overflow: hidden;
}

.process-list__item {
  background: var(--color-surface);
  padding: var(--space-6);
  display: grid;
  grid-template-columns: 3rem 1fr;
  gap: var(--space-5);
  align-items: start;
}

.process-list__index {
  font-family: var(--font-serif);
  font-size: 1.4rem;
  color: var(--color-accent);
}

.process-list__item h3 {
  margin-bottom: var(--space-2);
  font-size: 1.15rem;
}

.process-list__item p {
  margin: 0;
  color: var(--color-ink-soft);
}

@media (max-width: 620px) {
  .process-list__item {
    grid-template-columns: 1fr;
    gap: var(--space-2);
  }
}

/* Principles list */
.principles {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: var(--space-4);
}

.principles li {
  padding-left: var(--space-5);
  border-left: 2px solid var(--color-accent);
  color: var(--color-ink-soft);
}

.principles strong {
  display: block;
  color: var(--color-ink);
  font-family: var(--font-serif);
  font-size: 1.05rem;
  font-weight: 400;
  margin-bottom: var(--space-1);
}

/* ==========================================================================
   Badge
   ========================================================================== */

.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  background: var(--color-accent-soft);
  color: var(--color-accent-ink);
  border-radius: var(--radius-m);
  padding: 0.5em 0.9em;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: var(--space-5);
}

/* ==========================================================================
   Diagram (abstract, inline SVG)
   ========================================================================== */

.diagram {
  color: var(--color-accent);
}

.diagram line,
.diagram path {
  stroke: currentColor;
  stroke-width: 1.2;
  opacity: 0.55;
}

.diagram circle {
  fill: var(--color-bg);
  stroke: currentColor;
  stroke-width: 1.4;
}

.diagram circle.is-solid {
  fill: var(--color-accent);
  stroke: var(--color-accent);
}

/* ==========================================================================
   Content (editable page content typography)
   ========================================================================== */

.content {
  max-width: var(--container-narrow);
}

.content h2 {
  margin-top: var(--space-7);
}

.content h2:first-child {
  margin-top: 0;
}

.content h3 {
  margin-top: var(--space-6);
}

.content p,
.content li {
  color: var(--color-ink-soft);
}

.content ul,
.content ol {
  padding-left: 1.4em;
}

.content a {
  color: var(--color-accent);
}

/* ==========================================================================
   Forms
   ========================================================================== */

.form {
  max-width: 640px;
}

.form-row {
  margin-bottom: var(--space-5);
}

.form-row--split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-5);
}

@media (max-width: 620px) {
  .form-row--split {
    grid-template-columns: 1fr;
  }
}

.form-label {
  display: block;
  font-weight: 600;
  font-size: 0.92rem;
  margin-bottom: var(--space-2);
  color: var(--color-ink);
}

.form-hint {
  font-size: 0.85rem;
  color: var(--color-ink-faint);
  margin-top: var(--space-1);
}

.form-required {
  color: var(--color-error);
}

input[type="text"],
input[type="email"],
textarea,
select {
  width: 100%;
  font: inherit;
  padding: 0.7em 0.85em;
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-m);
  background: var(--color-surface);
  color: var(--color-ink);
}

input[type="text"]:focus,
input[type="email"]:focus,
textarea:focus,
select:focus {
  border-color: var(--color-accent);
}

textarea {
  min-height: 6rem;
  resize: vertical;
}

fieldset {
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-m);
  padding: var(--space-4) var(--space-5) var(--space-5);
  margin: 0;
}

legend {
  font-weight: 600;
  font-size: 0.92rem;
  padding-inline: var(--space-2);
}

.radio-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-5);
  margin-top: var(--space-3);
}

.radio-row label {
  display: inline-flex;
  align-items: center;
  gap: 0.5em;
  font-size: 0.95rem;
}

.checkbox-row {
  display: flex;
  align-items: flex-start;
  gap: 0.6em;
}

.checkbox-row input {
  margin-top: 0.3em;
}

.checkbox-row label {
  color: var(--color-ink-soft);
  font-size: 0.95rem;
}

.form-honeypot {
  position: absolute;
  left: -9999px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

.form-notice {
  padding: var(--space-4) var(--space-5);
  border-radius: var(--radius-m);
  margin-bottom: var(--space-6);
  font-size: 0.95rem;
}

.form-notice--success {
  background: var(--color-success-soft);
  color: var(--color-accent-ink);
  border: 1px solid var(--color-accent);
}

.form-notice--error {
  background: var(--color-error-soft);
  color: var(--color-error);
  border: 1px solid var(--color-error);
}

/* ==========================================================================
   Contact / privacy blocks
   ========================================================================== */

.contact-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-m);
  padding: var(--space-6) var(--space-7);
  max-width: 32em;
}

.contact-card dt {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-ink-faint);
  margin-top: var(--space-4);
}

.contact-card dt:first-child {
  margin-top: 0;
}

.contact-card dd {
  margin: var(--space-1) 0 0;
  font-size: 1.05rem;
}

.contact-card dd a {
  color: var(--color-accent);
  text-decoration: none;
}

.contact-card dd a:hover {
  text-decoration: underline;
}

/* ==========================================================================
   Final CTA band
   ========================================================================== */

.cta-band {
  background: var(--color-accent);
  color: #fff;
  padding-block: var(--space-8);
  text-align: center;
}

.cta-band h2 {
  color: #fff;
}

.cta-band p {
  color: rgba(255, 255, 255, 0.82);
  max-width: 36em;
  margin-inline: auto;
}

.cta-band .cta-group {
  justify-content: center;
}

.cta-band .btn--secondary {
  color: #fff;
  border-color: rgba(255, 255, 255, 0.5);
}

.cta-band .btn--secondary:hover,
.cta-band .btn--secondary:focus-visible {
  border-color: #fff;
  color: #fff;
}

.cta-band .btn--primary {
  background: #fff;
  color: var(--color-accent-ink);
}

.cta-band .btn--primary:hover,
.cta-band .btn--primary:focus-visible {
  background: rgba(255, 255, 255, 0.85);
}

/* ==========================================================================
   Footer
   ========================================================================== */

.site-footer {
  border-top: 1px solid var(--color-border);
  padding-block: var(--space-8) var(--space-6);
  background: var(--color-bg-alt);
}

.site-footer__grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: var(--space-7);
  margin-bottom: var(--space-7);
}

@media (max-width: 700px) {
  .site-footer__grid {
    grid-template-columns: 1fr;
    gap: var(--space-6);
  }
}

.site-footer__brand .site-wordmark {
  display: inline-block;
  margin-bottom: var(--space-3);
}

.site-footer__brand p {
  color: var(--color-ink-soft);
  max-width: 28em;
}

.site-footer h4 {
  margin-bottom: var(--space-3);
}

.site-footer ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: var(--space-2);
}

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

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

.site-footer__bottom {
  border-top: 1px solid var(--color-border);
  padding-top: var(--space-5);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: var(--space-3);
  font-size: 0.85rem;
  color: var(--color-ink-faint);
}

/* ==========================================================================
   404
   ========================================================================== */

.error-404 {
  text-align: center;
  padding-block: var(--space-9);
}