/*
Theme Name:        Helix Academy
Theme URI:         https://helixacademy.se
Description:       Child theme for Helix Academy for Transactional Analysis. Built on Twenty Twenty-Five. Design system: "The Academic Sanctuary" — Mid-Century Swiss editorial clarity with therapeutic warmth. No borders, tonal layering, radical negative space.
Author:            Helix Academy
Author URI:        https://helixacademy.se
Template:          twentytwentyfive
Version:           1.0.0
Requires at least: 6.7
Tested up to:      6.8
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:       helix-academy
Tags:              therapy, transactional-analysis, education, editorial, swiss
*/

/* ============================================================
   DESIGN SYSTEM: "THE ACADEMIC SANCTUARY"
   Ref: DESIGN.md — Helix Academy for Transactional Analysis

   Palette follows Material You surface hierarchy.
   NO 1px solid borders for containment — ever.
   Depth via tonal background shifts and negative space only.
   ============================================================ */

/* ============================================================
   CSS CUSTOM PROPERTIES — DESIGN TOKENS
   ============================================================ */
:root {
  /* --- Primary (Helix Blue) --- */
  --ha-primary:              #041632;
  --ha-primary-container:    #1b2b48;
  --ha-on-primary:           #ffffff;
  --ha-on-primary-container: #d0ddf0;

  /* --- Secondary (Therapeutic Sage) --- */
  --ha-secondary:            #50625a;
  --ha-secondary-container:  #d0e4da;
  --ha-secondary-fixed:      #d3e7dd;
  --ha-on-secondary:         #ffffff;
  --ha-on-secondary-container: #0d2019;

  /* --- Surface Hierarchy (warm paper stack) --- */
  --ha-surface-lowest:       #ffffff;
  --ha-surface:              #fbf9f6;
  --ha-surface-low:          #f5f3f0;
  --ha-surface-container:    #efecea;
  --ha-surface-high:         #eae8e5;
  --ha-surface-highest:      #e4e2df;

  /* --- On-surface text (no pure black) --- */
  --ha-on-surface:           #1b1c1a;
  --ha-on-surface-variant:   #44474d;
  --ha-outline-variant:      rgba(197, 198, 206, 0.20);

  /* --- Utility --- */
  --ha-error:                #ba1a1a;

  /* --- Typography --- */
  --ha-font-display:  'Inter', 'Helvetica Neue', sans-serif;
  --ha-font-meta:     'Space Grotesk', 'Courier New', monospace;

  /* --- Type scale --- */
  --ha-display-lg:   3.5rem;    /* Hero headlines */
  --ha-display-md:   2.75rem;
  --ha-display-sm:   2rem;
  --ha-headline-lg:  1.75rem;
  --ha-headline-md:  1.5rem;
  --ha-headline-sm:  1.25rem;
  --ha-title-lg:     1.125rem;
  --ha-title-md:     1rem;
  --ha-body-lg:      1rem;
  --ha-body-md:      0.9375rem;
  --ha-label-md:     0.8125rem;
  --ha-label-sm:     0.75rem;

  /* --- Radius (Swiss, not pill) --- */
  --ha-radius-sm:   0.25rem;
  --ha-radius-md:   0.375rem;   /* Primary buttons */
  --ha-radius-lg:   0.5rem;     /* Cards */
  --ha-radius-xl:   1rem;

  /* --- Spacing --- */
  --ha-space-4:    0.25rem;
  --ha-space-8:    0.5rem;
  --ha-space-12:   0.75rem;
  --ha-space-16:   1rem;
  --ha-space-24:   1.5rem;
  --ha-space-32:   2rem;
  --ha-space-48:   3rem;
  --ha-space-64:   4rem;
  --ha-space-96:   6rem;
  --ha-space-128:  8rem;

  /* --- Elevation (ambient only) --- */
  --ha-shadow-ambient: 0 20px 40px rgba(27, 28, 26, 0.05);
  --ha-shadow-float:   0 8px 24px rgba(27, 28, 26, 0.06);

  /* --- Transitions --- */
  --ha-ease:       cubic-bezier(0.4, 0, 0.2, 1);
  --ha-transition: 0.25s var(--ha-ease);

  /* --- Layout --- */
  --ha-content-width: 760px;
  --ha-wide-width:    1200px;
}

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

body {
  background-color: var(--ha-surface);
  color: var(--ha-on-surface);
  font-family: var(--ha-font-display);
  font-size: var(--ha-body-lg);
  line-height: 1.7;
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ============================================================
   TYPOGRAPHY
   ============================================================ */

/* Headings — Inter, tight tracking */
h1, h2, h3, h4, h5, h6,
.wp-block-post-title,
.entry-title {
  font-family: var(--ha-font-display);
  font-weight: 700;
  color: var(--ha-on-surface);
  line-height: 1.1;
  letter-spacing: -0.02em;
}

h1, .wp-block-post-title { font-size: var(--ha-display-lg); }
h2 { font-size: var(--ha-display-sm); }
h3 { font-size: var(--ha-headline-lg); }
h4 { font-size: var(--ha-headline-sm); }
h5 { font-size: var(--ha-title-lg); }
h6 { font-size: var(--ha-title-md); }

p {
  color: var(--ha-on-surface-variant);
  font-size: var(--ha-body-md);
  line-height: 1.75;
  max-width: 65ch;
  margin-bottom: var(--ha-space-24);
}

/* Meta / label text — Space Grotesk */
.ha-meta,
.ha-label,
time,
.wp-block-post-date,
.wp-block-post-terms {
  font-family: var(--ha-font-meta);
  font-size: var(--ha-label-md);
  font-weight: 500;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--ha-on-surface-variant);
}

a {
  color: var(--ha-on-surface);
  text-decoration-color: var(--ha-surface-highest);
  text-underline-offset: 3px;
  transition: color var(--ha-transition), text-decoration-color var(--ha-transition);
}

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

/* ============================================================
   HEADER — Glassmorphism nav per DESIGN.md
   ============================================================ */
.wp-block-template-part[data-slug="header"],
header.wp-block-template-part {
  background-color: rgba(255, 255, 255, 0.80);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  position: sticky;
  top: 0;
  z-index: 200;
  padding: var(--ha-space-16) 0;
  /* No border-bottom — tonal shift creates separation */
}

/* Site title */
.wp-block-site-title a,
.wp-block-site-title {
  font-family: var(--ha-font-display);
  font-size: var(--ha-title-lg);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--ha-on-surface) !important;
  text-decoration: none;
}

/* Tagline */
.wp-block-site-tagline {
  font-family: var(--ha-font-meta);
  font-size: var(--ha-label-sm);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ha-on-surface-variant);
}

/* ============================================================
   NAVIGATION
   ============================================================ */
.wp-block-navigation a {
  font-family: var(--ha-font-display);
  font-size: var(--ha-body-md);
  font-weight: 500;
  color: var(--ha-on-surface-variant) !important;
  text-decoration: none;
  padding: var(--ha-space-8) var(--ha-space-4);
  transition: color var(--ha-transition);
}

.wp-block-navigation a:hover,
.wp-block-navigation .current-menu-item > a {
  color: var(--ha-on-surface) !important;
}

/* Active item — subtle underline, not border */
.wp-block-navigation .current-menu-item > a {
  text-decoration: underline;
  text-underline-offset: 4px;
  text-decoration-color: var(--ha-on-surface);
}

/* ============================================================
   BUTTONS — Per DESIGN.md spec
   ============================================================ */
.wp-block-button__link,
.wp-element-button {
  font-family: var(--ha-font-display);
  font-size: var(--ha-label-md);
  font-weight: 600;
  letter-spacing: 0.01em;
  border-radius: var(--ha-radius-md) !important;  /* Swiss, not pill */
  padding: 0.875em 1.75em !important;
  transition: all var(--ha-transition) !important;
  cursor: pointer;
  border: none !important;
  text-decoration: none;
}

/* Primary button — Helix Blue with gradient "soul" */
.wp-block-button:not(.is-style-outline):not(.is-style-tertiary) .wp-block-button__link {
  background: linear-gradient(135deg, var(--ha-primary) 0%, var(--ha-primary-container) 100%) !important;
  color: var(--ha-on-primary) !important;
  box-shadow: none;
}

.wp-block-button:not(.is-style-outline):not(.is-style-tertiary) .wp-block-button__link:hover {
  opacity: 0.88;
  transform: translateY(-1px);
  box-shadow: var(--ha-shadow-float);
}

/* Tertiary button — text only, no background */
.wp-block-button.is-style-tertiary .wp-block-button__link {
  background: transparent !important;
  color: var(--ha-primary) !important;
  padding-left: 0 !important;
  padding-right: 0 !important;
}

.wp-block-button.is-style-tertiary .wp-block-button__link:hover {
  background: var(--ha-surface-high) !important;
  padding-left: 1em !important;
  padding-right: 1em !important;
}

/* Outline button */
.wp-block-button.is-style-outline .wp-block-button__link {
  background: transparent !important;
  color: var(--ha-primary) !important;
  border: 1.5px solid var(--ha-primary) !important;
}

.wp-block-button.is-style-outline .wp-block-button__link:hover {
  background: var(--ha-primary) !important;
  color: var(--ha-on-primary) !important;
}

/* ============================================================
   CARDS & LISTS — No dividers, tonal separation only
   ============================================================ */

/* Card: surface-container resting on surface-low */
.wp-block-group.ha-card {
  background: var(--ha-surface-lowest);
  border-radius: var(--ha-radius-lg);
  padding: var(--ha-space-32);
  /* NO border. NO box-shadow in standard view. */
  transition: box-shadow var(--ha-transition), transform var(--ha-transition);
}

.wp-block-group.ha-card:hover {
  box-shadow: var(--ha-shadow-ambient);
  transform: translateY(-2px);
}

/* Nested card on darker background */
.ha-bg-low .wp-block-group.ha-card,
.ha-bg-container .wp-block-group.ha-card {
  background: var(--ha-surface-highest);
}

/* Post list — space instead of dividers */
.wp-block-post-template {
  gap: var(--ha-space-24) !important;
}

article.wp-block-post {
  background: transparent;
  /* No border, no shadow. Separation via spacing. */
  padding-bottom: var(--ha-space-24);
}

.wp-block-post-title a {
  font-family: var(--ha-font-display);
  font-weight: 700;
  color: var(--ha-on-surface);
  text-decoration: none;
  letter-spacing: -0.01em;
}

.wp-block-post-title a:hover {
  color: var(--ha-primary);
}

/* ============================================================
   QUOTE BLOCKS
   ============================================================ */
.wp-block-quote {
  border: none !important;
  background: var(--ha-surface-low);
  border-radius: var(--ha-radius-lg);
  padding: var(--ha-space-32) var(--ha-space-48);
  margin: var(--ha-space-48) 0;
}

.wp-block-quote p {
  font-family: var(--ha-font-display);
  font-size: var(--ha-headline-md);
  font-style: italic;
  font-weight: 300;
  color: var(--ha-on-surface);
  letter-spacing: -0.01em;
  max-width: none;
}

.wp-block-quote cite {
  font-family: var(--ha-font-meta);
  font-size: var(--ha-label-sm);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ha-on-surface-variant);
}

/* ============================================================
   PULLQUOTE — "Case Study" Block per DESIGN.md
   ============================================================ */
.wp-block-pullquote,
.wp-block-group.ha-case-study {
  background: var(--ha-secondary-container) !important;
  border-radius: var(--ha-radius-xl);
  border: none !important;
  padding: var(--ha-space-96) var(--ha-space-64);
}

.wp-block-pullquote blockquote p {
  font-family: var(--ha-font-display);
  font-size: var(--ha-display-sm);
  font-weight: 700;
  color: var(--ha-on-secondary-container);
  letter-spacing: -0.02em;
}

.wp-block-pullquote cite {
  font-family: var(--ha-font-meta);
  font-size: var(--ha-label-md);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--ha-secondary);
}

/* ============================================================
   SEPARATORS — replaced by spacing, but styled if used
   ============================================================ */
.wp-block-separator {
  border: none !important;
  height: var(--ha-space-96);
  background: transparent !important;
  opacity: 1;
}

/* ============================================================
   FORMS — Minimalist per DESIGN.md
   ============================================================ */
input[type="text"],
input[type="email"],
input[type="tel"],
input[type="url"],
input[type="search"],
input[type="password"],
textarea,
select {
  width: 100%;
  padding: 0.875rem 1rem;
  background: var(--ha-surface-highest);  /* subtle fill */
  border: none;
  border-bottom: 1px solid transparent;   /* ghost border */
  border-radius: var(--ha-radius-md) var(--ha-radius-md) 0 0;
  color: var(--ha-on-surface);
  font-family: var(--ha-font-display);
  font-size: var(--ha-body-md);
  outline: none;
  transition: background var(--ha-transition), border-color var(--ha-transition), box-shadow var(--ha-transition);
}

input:focus,
textarea:focus,
select:focus {
  background: var(--ha-surface-lowest);
  border-bottom-color: var(--ha-primary);
  box-shadow: 0 1px 0 var(--ha-primary);
}

label {
  display: block;
  font-family: var(--ha-font-meta);
  font-size: var(--ha-label-md);
  font-weight: 500;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--ha-on-surface-variant);
  margin-bottom: var(--ha-space-8);
}

/* ============================================================
   LISTS — no bullets replaced by spacing
   ============================================================ */
.entry-content ul:not([class]),
.wp-block-list {
  list-style: none;
  padding-left: 0;
}

.entry-content ul:not([class]) li,
.wp-block-list li {
  padding: var(--ha-space-12) 0;
  color: var(--ha-on-surface-variant);
  /* Items separated by 1.5rem spacing, no HR */
}

/* ============================================================
   REFLECTION CHIPS — per DESIGN.md
   ============================================================ */
.ha-chip,
.wp-block-button.is-style-chip .wp-block-button__link {
  display: inline-flex;
  align-items: center;
  gap: var(--ha-space-8);
  background: var(--ha-secondary-fixed) !important;
  color: var(--ha-on-secondary-container) !important;
  font-family: var(--ha-font-meta);
  font-size: var(--ha-label-md);
  font-weight: 500;
  letter-spacing: 0.03em;
  border-radius: var(--ha-radius-lg) !important;
  padding: 0.35em 1em !important;
  border: none !important;
  cursor: pointer;
  transition: background var(--ha-transition);
}

.ha-chip:hover,
.wp-block-button.is-style-chip .wp-block-button__link:hover {
  background: var(--ha-secondary-container) !important;
}

/* ============================================================
   COVER / HERO BLOCKS
   ============================================================ */
.wp-block-cover {
  overflow: hidden;
}

.wp-block-cover__inner-container h1,
.wp-block-cover__inner-container h2 {
  color: var(--ha-on-primary);
  letter-spacing: -0.02em;
}

/* ============================================================
   IMAGES
   ============================================================ */
.wp-block-image img,
figure img {
  border-radius: var(--ha-radius-lg);
  display: block;
}

/* ============================================================
   FOOTER
   ============================================================ */
.wp-block-template-part[data-slug="footer"] {
  background-color: var(--ha-surface-low);
  padding: var(--ha-space-64) 0 var(--ha-space-32);
  /* No top border — tonal shift from surface is enough */
}

.wp-block-template-part[data-slug="footer"] .wp-block-site-title,
.wp-block-template-part[data-slug="footer"] .wp-block-site-title a {
  font-size: var(--ha-headline-sm);
  font-weight: 700;
  color: var(--ha-on-surface) !important;
  letter-spacing: -0.01em;
}

.wp-block-template-part[data-slug="footer"] a {
  font-family: var(--ha-font-meta);
  font-size: var(--ha-label-md);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--ha-on-surface-variant);
  text-decoration: none;
}

.wp-block-template-part[data-slug="footer"] a:hover {
  color: var(--ha-on-surface);
}

.wp-block-template-part[data-slug="footer"] p {
  font-family: var(--ha-font-meta);
  font-size: var(--ha-label-sm);
  color: var(--ha-on-surface-variant);
  letter-spacing: 0.03em;
}

/* ============================================================
   UTILITY / BACKGROUND CLASSES
   ============================================================ */

/* Surface tiers — use these on Group blocks for tonal layering */
.ha-bg-surface    { background-color: var(--ha-surface); }
.ha-bg-low        { background-color: var(--ha-surface-low); }
.ha-bg-container  { background-color: var(--ha-surface-container); }
.ha-bg-high       { background-color: var(--ha-surface-high); }
.ha-bg-highest    { background-color: var(--ha-surface-highest); }
.ha-bg-sage       { background-color: var(--ha-secondary-container); }
.ha-bg-primary    { background-color: var(--ha-primary); color: var(--ha-on-primary); }

/* Eyebrow / course code label */
.ha-eyebrow {
  display: block;
  font-family: var(--ha-font-meta);
  font-size: var(--ha-label-sm);
  font-weight: 600;
  letter-spacing: 0.10em;
  text-transform: uppercase;
  color: var(--ha-secondary);
  margin-bottom: var(--ha-space-8);
}

/* Asymmetric editorial layout helper */
.ha-editorial-body {
  max-width: 60%;
  margin-left: auto;
}

/* Wide section padding */
.ha-section {
  padding-top: var(--ha-space-96);
  padding-bottom: var(--ha-space-96);
}

/* Success state — sage, not bright green */
.ha-success { color: var(--ha-secondary); }

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 900px) {
  :root {
    --ha-display-lg: 2.5rem;
    --ha-display-sm: 1.75rem;
  }

  .ha-editorial-body {
    max-width: 100%;
    margin-left: 0;
  }

  .wp-block-pullquote {
    padding: var(--ha-space-48) var(--ha-space-32);
  }
}

@media (max-width: 600px) {
  :root {
    --ha-display-lg: 2rem;
  }

  .wp-block-group.ha-card {
    padding: var(--ha-space-24);
  }
}