/* ========================================
   SYSTEMICALLY FOOLISH - Site Styles
   v0.3.0 | 2026-01-16
   ======================================== */

:root {
  --sf-max: 1080px;
  --sf-border: rgba(0,0,0,.18);
  --sf-divider: rgba(0,0,0,.12);
  --sf-accent: #4a90d9; /* Light blue for CTAs */
  --sf-radius: 12px;
}

/* Light theme (systemicallyfoolish) */
.theme-light {
  --sf-bg: #FBFBFB;
  --sf-text: #1a1a2e;
  --sf-card-bg: #E7EEF0;
  --sf-header-bg: rgba(251,251,251,.95);
  --sf-heading-color: #0a0a1a;
}

/* Dark theme (foolish.systems) */
.theme-dark {
  --sf-bg: #1a1a2e;
  --sf-text: #e8e8e8;
  --sf-card-bg: #252540;
  --sf-header-bg: rgba(26,26,46,.95);
  --sf-border: rgba(255,255,255,.18);
  --sf-divider: rgba(255,255,255,.12);
}

/* ========================================
   RESET & BASE
   ======================================== */

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.5;
  background-color: var(--sf-bg);
  color: var(--sf-text);
}

a { color: inherit; }
a:hover { opacity: 0.8; }

/* ========================================
   HEADER
   ======================================== */

.sf-header {
  background: var(--sf-header-bg);
  backdrop-filter: saturate(150%) blur(8px);
  border-bottom: 1px solid var(--sf-divider);
  position: sticky;
  top: 0;
  z-index: 100;
}

/* Banner: Left-aligned if can't scale full width */
.sf-header__banner {
  width: 100%;
  text-align: left;
  padding: 0;
}

.sf-banner-img {
  width: 100%;
  max-width: 600px;
  height: auto;
  display: block;
}

/* Tagline: Flush left always */
.sf-header__tagline {
  text-align: left;
  font-weight: 800;
  font-size: 1rem;
  letter-spacing: 0.05em;
  padding: 12px 24px;
  border-bottom: 1px solid var(--sf-divider);
}

/* Navigation */
.sf-nav {
  max-width: var(--sf-max);
  margin: 0 auto;
  padding: 12px 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}

.sf-nav__main {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.sf-nav__main a {
  text-decoration: none;
  padding: 8px 14px;
  border-radius: var(--sf-radius);
  border: 2px solid var(--sf-border);
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.02em;
  transition: background 0.15s ease;
}

.sf-nav__main a:hover {
  background: var(--sf-divider);
}

.sf-nav__dropdown a {
  text-decoration: none;
  padding: 8px 14px;
  border-radius: var(--sf-radius);
  border: 2px solid var(--sf-border);
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.02em;
  transition: background 0.15s ease;
}

.sf-nav__dropdown a:hover {
  background: var(--sf-divider);
}

/* More dropdown */
.sf-nav__more {
  position: relative;
}

.sf-nav__dropdown-btn {
  background: none;
  border: 2px solid var(--sf-border);
  border-radius: var(--sf-radius);
  padding: 8px 14px;
  font-size: 0.9rem;
  cursor: pointer;
  color: inherit;
}

.sf-nav__dropdown {
  position: absolute;
  top: 100%;
  right: 0;
  margin-top: 4px;
  background: var(--sf-card-bg);
  border: 2px solid var(--sf-border);
  border-radius: var(--sf-radius);
  padding: 8px 0;
  min-width: 160px;
  box-shadow: 0 4px 12px rgba(0,0,0,0.15);
  z-index: 200;
}

.sf-nav__dropdown a {
  display: block;
  border: none;
  border-radius: 0;
  padding: 10px 16px;
}

.sf-nav__dropdown[hidden] {
  display: none;
}

/* Mobile adjustments */
@media (max-width: 768px) {
  .sf-header {
    position: relative; /* Let header scroll on mobile */
  }
  
  .sf-banner-img {
    max-width: 100%;
  }
  
  .sf-header__tagline {
    font-size: 0.85rem;
    padding: 10px 16px;
  }
  
  .sf-nav {
    padding: 10px 16px;
  }
  
  .sf-nav__main a {
    padding: 6px 10px;
    font-size: 0.8rem;
  }
}

/* ========================================
   MAIN CONTENT
   ======================================== */

.sf-main {
  max-width: var(--sf-max);
  margin: 0 auto;
  padding: 24px;
}

.sf-section {
  padding: 32px 0;
  border-bottom: 1px solid var(--sf-divider);
}

.sf-section:last-child {
  border-bottom: none;
}

.sf-section--highlight {
  background: var(--sf-card-bg);
  margin: 32px -24px;
  padding: 32px 24px;
  border-radius: var(--sf-radius);
  border: 2px solid var(--sf-border);
}

.sf-hero h1 {
  font-size: 2rem;
  margin-bottom: 1rem;
}

h1 {
  text-transform: uppercase;
  letter-spacing: 0.02em;
  color: var(--sf-heading-color, #0a0a1a);
}

.sf-prose p {
  margin: 0.75rem 0;
}

/* ========================================
   BUTTONS & ACTIONS
   ======================================== */

.sf-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 24px;
}

.sf-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 18px;
  border: 2px solid var(--sf-border);
  border-radius: var(--sf-radius);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  cursor: pointer;
  background: transparent;
  color: inherit;
  transition: all 0.15s ease;
}

.sf-btn:hover {
  background: var(--sf-divider);
}

/* Primary CTA - Light blue accent */
.sf-btn--primary {
  background: var(--sf-accent);
  border-color: var(--sf-accent);
  color: #fff;
}

.sf-btn--primary:hover {
  background: #3a7bc8;
  border-color: #3a7bc8;
}

.sf-btn--ghost {
  background: transparent;
}

/* ========================================
   PILLAR CARDS (Four Lanes on Home)
   ======================================== */

.sf-pillars {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
  margin-top: 24px;
}

@media (max-width: 768px) {
  .sf-pillars {
    grid-template-columns: 1fr;
  }
}

.sf-pillar-card {
  background: var(--sf-card-bg);
  border: 2px solid var(--sf-border);
  border-radius: var(--sf-radius);
  padding: 24px;
  display: flex;
  flex-direction: column;
}

.sf-pillar-card h2 {
  font-size: 1.25rem;
  margin: 0 0 8px 0;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  color: var(--sf-heading-color, #0a0a1a);
}

.sf-pillar-card__tagline {
  font-style: italic;
  opacity: 0.85;
  margin: 0 0 16px 0;
  font-size: 0.95rem;
}

.sf-pillar-card p {
  margin: 12px 0;
  font-size: 0.9rem;
}

.sf-pillar-card__note {
  font-size: 0.85rem;
  opacity: 0.9;
}

.sf-pillar-card .sf-btn {
  margin-top: auto;
  padding-top: 16px;
  align-self: flex-start;
}

/* ========================================
   PRINCIPLE CARDS (Guiding Principles page)
   ======================================== */

.sf-principles {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.sf-principle-card {
  background: var(--sf-card-bg);
  border: 2px solid var(--sf-border);
  border-radius: var(--sf-radius);
  padding: 24px;
}

.sf-principle-card h2 {
  font-size: 1rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.02em;
  margin: 0 0 16px 0;
  color: var(--sf-heading-color, #0a0a1a);
}

.sf-principle-card p {
  margin: 10px 0;
  font-size: 0.95rem;
  line-height: 1.6;
}

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

/* ========================================
   CONTACT CARDS
   ======================================== */

.sf-contact-grid {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.sf-contact-card {
  background: var(--sf-card-bg);
  border: 2px solid var(--sf-border);
  border-radius: var(--sf-radius);
  padding: 20px 24px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.sf-contact-card p {
  margin: 0;
  font-size: 0.95rem;
}

.sf-contact-card .sf-btn {
  align-self: flex-start;
}

/* ========================================
   PRIVACY CARDS
   ======================================== */

.sf-privacy-commitments {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.sf-privacy-card {
  background: var(--sf-card-bg);
  border: 2px solid var(--sf-border);
  border-radius: var(--sf-radius);
  padding: 16px 20px;
}

.sf-privacy-card p {
  margin: 0;
  font-size: 0.95rem;
}

/* ========================================
   PRINCIPLE CARDS (Governing Principles page)
   ======================================== */

.sf-principles {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.sf-principle-card {
  background: var(--sf-card-bg);
  border: 2px solid var(--sf-border);
  border-radius: var(--sf-radius);
  padding: 24px;
}

.sf-principle-card h2 {
  font-size: 1rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.02em;
  margin: 0 0 12px 0;
  color: var(--sf-heading-color, #0a0a1a);
}

.sf-principle-card p {
  margin: 0;
  font-size: 0.95rem;
  line-height: 1.6;
}

.sf-section--meta {
  opacity: 0.85;
  font-size: 0.9rem;
}

.sf-section--meta h3 {
  font-size: 0.95rem;
  margin: 0 0 8px 0;
}

.sf-version-stamp {
  margin-top: 12px;
  font-size: 0.85rem;
  opacity: 0.8;
}

/* ========================================
   PODCAST BANNER
   ======================================== */

.sf-podcast-banner {
  background: var(--sf-card-bg);
  margin: 32px -24px;
  padding: 40px 32px;
  border-radius: var(--sf-radius);
  border: 2px solid var(--sf-border);
  text-align: center;
}

.sf-podcast-banner__eyebrow {
  font-size: 0.9rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--sf-accent);
  margin: 0 0 8px 0;
}

.sf-podcast-banner h2 {
  font-size: 1.75rem;
  margin: 0 0 8px 0;
  letter-spacing: 0.02em;
}

.sf-podcast-banner__tagline {
  font-style: italic;
  font-size: 1.1rem;
  opacity: 0.85;
  margin: 0 0 20px 0;
}

.sf-podcast-banner p {
  margin: 16px 0;
}

.sf-podcast-banner .sf-btn {
  margin-top: 16px;
}

/* ========================================
   LISTS
   ======================================== */

.sf-list {
  padding-left: 20px;
  margin: 12px 0;
}

.sf-list li {
  margin: 8px 0;
}

/* ========================================
   FOOTER
   ======================================== */

.sf-footer {
  border-top: 1px solid var(--sf-divider);
  padding: 24px;
  text-align: center;
  font-size: 0.9rem;
  opacity: 0.9;
}

.sf-footer-links {
  margin-bottom: 12px;
}

.sf-footer-links a {
  text-decoration: none;
}

.sf-footer-links a:hover {
  text-decoration: underline;
}

.sf-footer__version {
  font-size: 0.75rem;
  opacity: 0.7;
  margin: 8px 0;
}

/* ========================================
   ACCORDION (for Education/Research pages)
   ======================================== */

.sf-accordion {
  border: 2px solid var(--sf-border);
  border-radius: var(--sf-radius);
  margin: 14px 0;
  overflow: clip;
}

.sf-accordion__summary {
  list-style: none;
  cursor: pointer;
  padding: 16px;
  outline: none;
  background: var(--sf-card-bg);
}

.sf-accordion[open] .sf-accordion__summary {
  border-bottom: 1px solid var(--sf-divider);
}

.sf-accordion__summary::-webkit-details-marker {
  display: none;
}

.sf-accordion__topline {
  display: flex;
  align-items: center;
  gap: 10px;
  justify-content: space-between;
  flex-wrap: wrap;
}

.sf-accordion__title {
  margin: 10px 0;
  font-size: 1.1rem;
}

.sf-accordion__panel {
  padding: 0 16px 16px;
}

.sf-accordion__panelControls {
  padding: 10px 0;
  display: flex;
  justify-content: space-between;
}

.sf-accordion__panelControls--bottom {
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px solid var(--sf-divider);
}

/* Status tags */
.sf-tag {
  padding: 3px 10px;
  border-radius: 999px;
  border: 2px solid var(--sf-border);
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.sf-tag--stable { border-color: #2d8a4e; color: #2d8a4e; }
.sf-tag--stub { border-color: #b8860b; color: #b8860b; }
.sf-tag--placeholder { border-color: #888; color: #888; }

/* Expand/Collapse controls */
.sf-lane-controls {
  display: flex;
  gap: 12px;
  padding: 12px 0 18px;
}

/* ========================================
   META & VERSION INFO
   ======================================== */

.sf-meta-block {
  margin-top: 20px;
  padding-top: 16px;
  border-top: 1px solid var(--sf-divider);
  font-size: 0.8rem;
  opacity: 0.85;
}

.sf-meta-block__row {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.sf-meta-block__label {
  opacity: 0.7;
}

/* Disclosure */
.sf-callout {
  border: 2px dashed var(--sf-border);
  border-radius: var(--sf-radius);
  padding: 16px;
  margin: 16px 0;
  font-size: 0.9rem;
}

/* ========================================
   UTILITY
   ======================================== */

code {
  background: rgba(128,128,128,0.15);
  padding: 2px 6px;
  border-radius: 6px;
  font-size: 0.9em;
}

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