/* ===== Pulse Line — premium editorial design tokens ===== */
:root {
  --bg: #FCFAF6;
  --bg-alt: #F4EFE6;
  --bg-card: #FFFFFF;
  --ink: #1F1B16;
  --ink-soft: #5C554B;
  --blue-deep: #1A2E3B;
  --blue-mid: #255F85;
  --blue-pale: #EBF2FA;
  --signal: #C1491A;
  --signal-soft: #E07A5F;
  --line: #EBE1D0;
  --whatsapp-color: #25D366;

  --font-display: "Source Serif 4", Georgia, serif;
  --font-body: "Inter", -apple-system, sans-serif;
  --font-mono: "IBM Plex Mono", monospace;
  --shadow-sm: 0 2px 8px rgba(31, 27, 22, 0.04);
  --shadow-md: 0 8px 24px rgba(31, 27, 22, 0.08);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-body);
  line-height: 1.65;
  font-size: 18px;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--blue-mid); text-decoration: none; transition: color 0.2s ease, border-color 0.2s ease; }
a:hover { color: var(--signal); }
a:focus-visible, button:focus-visible {
  outline: 2px solid var(--signal);
  outline-offset: 3px;
}

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

.wrap {
  max-width: 940px;
  margin: 0 auto;
  padding: 0 32px;
}

/* ===== Header ===== */
.site-header {
  border-bottom: 2px solid var(--ink);
  padding: 24px 0;
  background: var(--bg-alt);
}
.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}
.logo {
  font-family: var(--font-display);
  font-size: 1.7rem;
  font-weight: 700;
  color: var(--ink);
  letter-spacing: -0.02em;
  display: flex;
  align-items: center;
  gap: 10px;
}
.logo-mark { color: var(--signal); flex-shrink: 0; }
.logo span { color: var(--signal); }
.site-nav { display: flex; gap: 32px; }
.site-nav a {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--ink-soft);
  position: relative;
  padding: 4px 0;
}
.site-nav a::after {
  content: "";
  position: absolute;
  left: 0; bottom: 0;
  width: 0;
  height: 2px;
  background: var(--signal);
  transition: width 0.25s ease;
}
.site-nav a:hover::after, .site-nav a.active::after { width: 100%; }
.site-nav a:hover, .site-nav a.active { color: var(--ink); text-decoration: none; }

/* ===== Hero ===== */
.hero {
  padding: 80px 0 48px;
  background: linear-gradient(180deg, var(--bg-alt) 0%, var(--bg) 100%);
  border-bottom: 1px solid var(--line);
}
.hero .eyebrow {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--signal);
  margin-bottom: 16px;
  font-weight: 600;
}
.hero h1 {
  font-family: var(--font-display);
  font-size: clamp(2.3rem, 6vw, 3.6rem);
  line-height: 1.1;
  color: var(--ink);
  margin: 0 0 20px;
  max-width: 18ch;
  font-weight: 700;
  letter-spacing: -0.01em;
}
.hero p {
  font-size: 1.2rem;
  color: var(--ink-soft);
  max-width: 55ch;
  margin: 0 0 16px;
  line-height: 1.6;
}

/* ===== ECG signature divider ===== */
.pulse-divider {
  width: 100%;
  height: 50px;
  margin: 40px 0 10px;
}
.pulse-divider path {
  fill: none;
  stroke: var(--signal);
  stroke-width: 2.5;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-dasharray: 1400;
  stroke-dashoffset: 1400;
  animation: draw 2.2s ease-out forwards;
}
@keyframes draw {
  to { stroke-dashoffset: 0; }
}
@media (prefers-reduced-motion: reduce) {
  .pulse-divider path { animation: none; stroke-dashoffset: 0; }
}

/* ===== Section labels ===== */
.section-label {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--signal);
  margin: 48px 0 24px;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 12px;
}
.section-label::after {
  content: "";
  flex-grow: 1;
  height: 1.5px;
  background: var(--line);
}

/* ===== Grid Post List ===== */
.post-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(400px, 1fr));
  gap: 32px;
  margin-bottom: 80px;
}
@media (max-width: 768px) {
  .post-list {
    grid-template-columns: 1fr;
  }
}

.post-card {
  display: flex;
  flex-direction: column;
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: 8px;
  overflow: hidden;
  padding: 24px;
  transition: transform 0.25s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.25s cubic-bezier(0.16, 1, 0.3, 1), border-color 0.25s ease;
  box-shadow: var(--shadow-sm);
}
.post-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--signal-soft);
  text-decoration: none;
}
.post-card .tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--signal);
  margin-bottom: 16px;
  font-weight: 600;
}
.post-card .tag svg {
  width: 14px;
  height: 14px;
}
.post-card h2 {
  font-family: var(--font-display);
  font-size: 1.45rem;
  margin: 0 0 12px;
  line-height: 1.25;
  color: var(--ink);
  font-weight: 700;
}
.post-card p {
  font-size: 0.95rem;
  color: var(--ink-soft);
  margin: 0 0 20px;
  line-height: 1.6;
}
.post-card .meta {
  margin-top: auto;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--ink-soft);
  border-top: 1px solid var(--line);
  padding-top: 12px;
}

/* ===== Article / Post Template ===== */
.post-header {
  padding: 64px 0 32px;
}
.post-header .tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--signal);
  margin-bottom: 16px;
  font-weight: 600;
}
.post-header .tag svg {
  width: 16px;
  height: 16px;
}
.post-header h1 {
  font-family: var(--font-display);
  font-size: clamp(2rem, 5.5vw, 2.8rem);
  line-height: 1.15;
  margin: 0 0 20px;
  color: var(--ink);
  font-weight: 700;
}
.post-header .byline {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--ink-soft);
  border-bottom: 2px solid var(--ink);
  padding-bottom: 16px;
}

/* Featured Images */
.featured-image-container {
  margin: 40px 0;
  border-radius: 12px;
  overflow: hidden;
  box-shadow: var(--shadow-md);
  border: 1px solid var(--line);
}
.featured-image-container img {
  width: 100%;
  max-height: 500px;
  object-fit: cover;
  transition: transform 0.5s ease;
}
.featured-image-container:hover img {
  transform: scale(1.02);
}
.image-caption {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--ink-soft);
  text-align: center;
  margin-top: 12px;
  letter-spacing: 0.02em;
}

.post-body {
  font-size: 1.1rem;
  line-height: 1.75;
  color: var(--ink);
  max-width: 720px;
  margin: 0 auto 48px;
}
.post-body h2 {
  font-family: var(--font-display);
  font-size: 1.65rem;
  margin: 48px 0 16px;
  color: var(--ink);
  border-bottom: 1px solid var(--line);
  padding-bottom: 8px;
}
.post-body p {
  margin: 0 0 24px;
}
.post-body .pull {
  font-family: var(--font-display);
  font-size: 1.45rem;
  line-height: 1.4;
  color: var(--signal);
  font-style: italic;
  border-left: 4px solid var(--signal);
  padding: 8px 0 8px 24px;
  margin: 40px 0;
}

.back-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--blue-mid);
  font-weight: 600;
  border: 1px solid var(--line);
  padding: 10px 20px;
  border-radius: 6px;
  background: var(--bg-card);
  box-shadow: var(--shadow-sm);
  transition: all 0.2s ease;
}
.back-link:hover {
  border-color: var(--signal);
  color: var(--signal);
  transform: translateX(-4px);
  text-decoration: none;
}

/* ===== Contact & About Elements ===== */
.page-body {
  padding: 60px 0;
}
.page-body h1 {
  font-family: var(--font-display);
  font-size: clamp(2.2rem, 6vw, 3rem);
  margin-bottom: 32px;
}

.value-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 24px;
  margin: 40px 0;
}
.value-item {
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 24px;
  box-shadow: var(--shadow-sm);
}
.value-item svg {
  color: var(--signal);
  margin-bottom: 16px;
}
.value-item h3 {
  font-family: var(--font-display);
  font-size: 1.25rem;
  margin: 0 0 12px;
}
.value-item p {
  font-size: 0.9rem;
  color: var(--ink-soft);
  margin: 0;
}

/* Contact Cards & WhatsApp layout */
.contact-card-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin: 32px 0 48px;
}
@media (max-width: 600px) {
  .contact-card-grid {
    grid-template-columns: 1fr;
  }
}
.contact-card {
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 24px;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
}
.contact-card.whatsapp-premium {
  border-color: var(--whatsapp-color);
  background: radial-gradient(circle at 100% 100%, #e8fbf0 0%, var(--bg-card) 60%);
}
.contact-card p {
  margin: 0 0 12px;
}
.contact-card-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  background: var(--blue-mid);
  color: #fff;
  padding: 12px 20px;
  border-radius: 6px;
  font-weight: 600;
  font-size: 0.95rem;
  transition: all 0.2s ease;
  margin-top: auto;
}
.contact-card-button:hover {
  background: var(--signal);
  color: #fff;
  text-decoration: none;
}
.contact-card-button.whatsapp-btn {
  background: var(--whatsapp-color);
}
.contact-card-button.whatsapp-btn:hover {
  background: #1ebe57;
}

/* ===== Footer ===== */
.site-footer {
  background: var(--ink);
  color: var(--bg-alt);
  padding: 40px 0;
  font-size: 0.9rem;
  border-top: 4px solid var(--signal);
}
.site-footer .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}
.site-footer .brand-mark {
  display: flex;
  align-items: center;
  gap: 8px;
}
.site-footer .brand-mark svg {
  color: var(--signal-soft);
}