/*
 * decalog.css
 * Styles for the Decalog of Antifragile Companies page
 * Mister Pato — integrates on top of the project's base.css/variables
 *
 * Conventions:
 *   - All selectors prefixed with .dc- to avoid collisions with existing styles
 *   - Module-specific CSS variables, defined locally in :root
 *   - Compatible with the typography and colour system of misterpato.es
 */

/* ─── Module variables ──────────────────────────────────────────────────── */
:root {
  --dc-accent:        #1a1a1a;      /* Main text black (inherits from the site) */
  --dc-accent-gold:   #fecc00;      /* Brand yellow */
  --dc-bg:            #ffffff;
  --dc-surface:       #f8f7f4;      /* Very soft warm grey, matching the site */
  --dc-border:        #e8e6e0;
  --dc-border-strong: #c8c5bc;
  --dc-text:          #1a1a1a;
  --dc-text-muted:    #6b6860;
  --dc-tag-post-bg:   #f0ede4;
  --dc-tag-post-text: #4a4740;
  --dc-tag-svc-bg:    #e8f0e8;
  --dc-tag-svc-text:  #2a4a2a;
  --dc-rule-border:   #1a1a1a;
  --dc-rule-bg:       #f8f7f4;

  /* Typefaces — reuse the site's existing fonts */
  --dc-serif:  "Inter", sans-serif;           /* Inter for all editorial text */
  --dc-mono:   var(--ar-font-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Courier New", monospace);
}

/* ─── Base layout ───────────────────────────────────────────────────────── */
.dc-container {
  max-width: 820px;
  margin-inline: auto;
  padding-inline: 1.5rem;
}

/* ─── Header ────────────────────────────────────────────────────────────── */
.dc-header {
  padding-block: 4rem 3.5rem;
  border-bottom: 1px solid var(--dc-border);
}

.dc-eyebrow {
  font-family: var(--dc-mono);
  font-size: 0.68rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--dc-text-muted);
  margin-bottom: 1.5rem;
  display: flex;
  align-items: center;
  gap: 10px;
}

.dc-eyebrow::before {
  content: '';
  display: block;
  width: 28px;
  height: 1px;
  background: var(--dc-border-strong);
}

.dc-h1 {
  font-family: var(--dc-serif);
  font-size: clamp(2.2rem, 6vw, 4.2rem);
  font-weight: 300;
  line-height: 1.08;
  letter-spacing: -0.02em;
  color: var(--dc-text);
  margin-bottom: 1.5rem;
}

.dc-h1 em {
  font-style: italic;
  /* Uses the brand accent colour; if the site has --color-primary, use it */
  color: var(--color-primary, var(--dc-accent-gold));
}

.dc-header-desc {
  font-family: var(--dc-serif);
  font-size: 1.15rem;
  font-style: italic;
  color: var(--dc-text-muted);
  max-width: 540px;
  line-height: 1.75;
}

/* ─── Intro strip ───────────────────────────────────────────────────────── */
.dc-intro-strip {
  padding-block: 2.5rem;
  border-bottom: 1px solid var(--dc-border);
}

.dc-intro-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2.5rem;
  align-items: start;
}

.dc-intro-text {
  font-size: 0.9rem;
  color: var(--dc-text-muted);
  line-height: 1.85;
}

.dc-intro-text strong { color: var(--dc-text); }
.dc-intro-text p + p  { margin-top: 0.75rem; }

/* 4-step grid */
.dc-four-steps {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1px;
  background: var(--dc-border);
  border: 1px solid var(--dc-border);
  border-radius: 10px;
  overflow: hidden;
}

.dc-step {
  background: var(--dc-bg);
  padding: 1.1rem 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 3px;
  transition: background 0.15s;
}

.dc-step:hover { background: var(--dc-surface); }

.dc-step-num {
  font-family: var(--dc-mono);
  font-size: 0.65rem;
  letter-spacing: 0.1em;
  color: var(--color-primary, var(--dc-accent-gold));
  text-transform: uppercase;
}

.dc-step-label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--dc-text);
}

.dc-step-sub {
  font-size: 0.75rem;
  color: var(--dc-text-muted);
}

/* ─── Decalog section ───────────────────────────────────────────────────── */
.dc-section { padding-bottom: 2rem; }

.dc-section-label {
  font-family: var(--dc-mono);
  font-size: 0.65rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--dc-text-muted);
  padding-block: 2rem 1.75rem;
  display: flex;
  align-items: center;
  gap: 12px;
}

.dc-section-label::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--dc-border);
}

/* ─── Principle ─────────────────────────────────────────────────────────── */
.dc-principio {
  border-top: 1px solid var(--dc-border);
}

.dc-principio:last-of-type {
  border-bottom: 1px solid var(--dc-border);
  margin-bottom: 0;
}

/* Header button */
.dc-principio-header {
  width: 100%;
  background: none;
  border: none;
  padding: 1.6rem 0;
  cursor: pointer;
  display: grid;
  grid-template-columns: 52px 1fr 36px;
  gap: 1.25rem;
  align-items: center;
  text-align: left;
  color: inherit;
  transition: background 0.12s;
}

.dc-principio-header:hover .dc-title {
  color: var(--color-primary, var(--dc-accent-gold));
}

.dc-principio-header:focus-visible {
  outline: 2px solid var(--color-primary, var(--dc-accent-gold));
  outline-offset: 2px;
  border-radius: 4px;
}

.dc-num {
  font-family: var(--dc-mono);
  font-size: 0.7rem;
  color: var(--dc-text-muted);
  letter-spacing: 0.06em;
  opacity: 0.55;
  padding-top: 2px;
}

.dc-title-wrap {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.dc-title {
  font-family: var(--dc-serif);
  font-size: clamp(1rem, 2.2vw, 1.35rem);
  font-weight: 400;
  line-height: 1.25;
  color: var(--dc-text);
  transition: color 0.2s;
}

.dc-tagline {
  font-family: var(--dc-serif);
  font-style: italic;
  font-size: 0.82rem;
  color: var(--dc-text-muted);
  line-height: 1.5;
}

/* Toggle icon */
.dc-toggle {
  width: 26px;
  height: 26px;
  border: 1px solid var(--dc-border);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--dc-text-muted);
  flex-shrink: 0;
  justify-self: end;
  transition: all 0.2s;
}

.dc-principio-header[aria-expanded="true"] .dc-toggle {
  background: var(--dc-text);
  border-color: var(--dc-text);
  color: white;
  transform: rotate(45deg);
}

/* ─── Expandable panel ──────────────────────────────────────────────────── */
.dc-panel {
  padding: 0 0 2.25rem 68px;
}

/* hidden managed by JS (we remove the hidden attribute) */
.dc-panel[hidden] { display: none; }

/* Entry animation */
.dc-panel.is-opening {
  animation: dc-slide-in 0.22s ease both;
}

@keyframes dc-slide-in {
  from { opacity: 0; transform: translateY(-8px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* Rule block */
.dc-rule-block {
  background: var(--dc-rule-bg);
  border-left: 3px solid var(--dc-rule-border);
  border-radius: 0 6px 6px 0;
  padding: 0.9rem 1.1rem;
  margin-bottom: 1.5rem;
}

.dc-rule-label {
  font-family: var(--dc-mono);
  font-size: 0.62rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--dc-text-muted);
  margin-bottom: 4px;
}

.dc-rule-text {
  font-family: var(--dc-serif);
  font-style: italic;
  font-size: 0.975rem;
  color: var(--dc-text);
  line-height: 1.55;
  margin: 0;
}

/* Richtext description */
.dc-panel-desc {
  font-size: 0.875rem;
  color: var(--dc-text-muted);
  line-height: 1.85;
  margin-bottom: 1.25rem;
}

.dc-panel-desc p + p { margin-top: 0.6rem; }

/* How to apply it list */
.dc-how-list {
  list-style: none;
  padding: 0;
  margin: 0 0 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 5px;
}

.dc-how-list li {
  font-size: 0.85rem;
  color: var(--dc-text-muted);
  padding-left: 1.2rem;
  position: relative;
  line-height: 1.65;
}

.dc-how-list li::before {
  content: '→';
  position: absolute;
  left: 0;
  font-size: 0.75rem;
  color: var(--dc-border-strong);
  top: 1px;
}

/* ─── Links row ─────────────────────────────────────────────────────────── */
.dc-links-row {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  align-items: center;
  margin-top: 0.25rem;
}

.dc-links-label {
  font-family: var(--dc-mono);
  font-size: 0.62rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--dc-text-muted);
  opacity: 0.55;
  margin-right: 3px;
}

.dc-tag {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-size: 0.75rem;
  padding: 5px 11px;
  border-radius: 100px;
  text-decoration: none;
  font-family: var(--dc-mono);
  border: 1px solid var(--dc-border);
  color: var(--dc-text-muted);
  background: transparent;
  transition: all 0.15s;
  line-height: 1;
}

.dc-tag:hover {
  text-decoration: none;
  border-color: var(--dc-border-strong);
  color: var(--dc-text);
}

/* Posts: pencil icon */
.dc-tag--post::before {
  content: '✍';
  font-size: 10px;
}

.dc-tag--post:hover {
  background: var(--dc-tag-post-bg);
  border-color: var(--dc-border-strong);
  color: var(--dc-tag-post-text);
}

/* Services: diamond */
.dc-tag--service::before {
  content: '◆';
  font-size: 7px;
  color: var(--color-primary, var(--dc-accent-gold));
}

.dc-tag--service:hover {
  background: var(--dc-tag-svc-bg);
  border-color: var(--dc-border-strong);
  color: var(--dc-tag-svc-text);
}

/* ─── Final CTA ─────────────────────────────────────────────────────────── */
.dc-cta-block {
  border-top: 1px solid var(--dc-border);
  padding-block: 4rem;
  margin-top: 2rem;
}

.dc-cta-inner {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 2.5rem;
  align-items: center;
}

.dc-cta-text h2 {
  font-family: var(--dc-serif);
  font-size: clamp(1.5rem, 3vw, 2.2rem);
  font-weight: 400;
  line-height: 1.2;
  margin-bottom: 0.6rem;
  color: var(--dc-text);
}

.dc-cta-text p {
  font-size: 0.875rem;
  color: var(--dc-text-muted);
  max-width: 440px;
  line-height: 1.75;
}

.dc-btn-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  /* Inherits the site's primary button; you can use .btn-primary if available */
  background: var(--dc-text);
  color: white;
  font-size: 0.82rem;
  font-weight: 600;
  padding: 13px 26px;
  border-radius: 100px;
  text-decoration: none;
  white-space: nowrap;
  transition: all 0.18s;
  letter-spacing: 0.02em;
}

.dc-btn-cta:hover {
  background: #333;
  text-decoration: none;
  transform: translateY(-1px);
}

/* ─── Empty state ───────────────────────────────────────────────────────── */
.dc-empty {
  padding: 2rem 0;
  font-size: 0.875rem;
  color: var(--dc-text-muted);
  font-style: italic;
}

/* ─── Responsive ────────────────────────────────────────────────────────── */
@media (max-width: 700px) {
  .dc-intro-grid      { grid-template-columns: 1fr; gap: 1.75rem; }
  .dc-cta-inner       { grid-template-columns: 1fr; gap: 1.5rem; }
  .dc-btn-cta         { width: fit-content; }

  .dc-principio-header {
    grid-template-columns: 40px 1fr 30px;
    gap: 0.75rem;
    padding-block: 1.25rem;
  }

  .dc-panel           { padding-left: 50px; }
  .dc-h1              { font-size: 2rem; }
}

@media (max-width: 420px) {
  .dc-panel           { padding-left: 0; }
  .dc-four-steps      { grid-template-columns: 1fr; }
}