/* SmartDev design system */

:root {
  --sd-bg-dark: #07090c;
  --sd-bg-dark-elevated: #0e1218;
  --sd-bg-light: #f4f6f7;
  --sd-bg-white: #ffffff;
  --sd-text-dark: #e8eef2;
  --sd-text-dark-muted: #9aa8b5;
  --sd-text: #1a2330;
  --sd-muted: #5a6a7a;
  --sd-accent: #1aabb8;
  --sd-accent-dark: #158a94;
  --sd-accent-soft: rgba(26, 171, 184, 0.14);
  --sd-border: rgba(26, 171, 184, 0.22);
  --sd-border-light: #e2e8ee;
  --sd-radius: 12px;
  --sd-font-display: "Space Grotesk", "Segoe UI", sans-serif;
  --sd-font-body: "DM Sans", "Segoe UI", sans-serif;
  --sd-font-mono: "JetBrains Mono", ui-monospace, monospace;
  --sd-container: 1120px;
  --sd-header-h: 72px;
  --sd-shadow: 0 18px 50px rgba(0, 0, 0, 0.28);

  /* Keep legacy tokens used by blog styles */
  --sd-header-bg: #07090c;
  --sd-titlebar: #1aabb8;
}

.sd-container {
  width: min(100% - 2rem, var(--sd-container));
  margin-inline: auto;
}

.sd-section {
  padding: clamp(3.5rem, 6vw, 6rem) 0;
}

.sd-section--dark {
  background: var(--sd-bg-dark);
  color: var(--sd-text-dark);
}

.sd-section--light {
  background: var(--sd-bg-light);
  color: var(--sd-text);
}

.sd-section--white {
  background: var(--sd-bg-white);
  color: var(--sd-text);
}

.sd-eyebrow {
  display: inline-block;
  font-family: var(--sd-font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--sd-accent);
  margin: 0 0 1rem;
}

.sd-h1 {
  font-family: var(--sd-font-display);
  font-weight: 600;
  font-size: clamp(2.1rem, 5vw, 3.75rem);
  line-height: 1.08;
  letter-spacing: -0.03em;
  margin: 0 0 1.25rem;
}

.sd-h2 {
  font-family: var(--sd-font-display);
  font-weight: 600;
  font-size: clamp(1.6rem, 3.2vw, 2.4rem);
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin: 0 0 0.85rem;
}

.sd-h3 {
  font-family: var(--sd-font-display);
  font-weight: 600;
  font-size: 1.15rem;
  line-height: 1.3;
  margin: 0 0 0.5rem;
}

.sd-lead {
  font-size: clamp(1.05rem, 1.5vw, 1.2rem);
  line-height: 1.6;
  color: var(--sd-muted);
  max-width: 42rem;
  margin: 0;
}

.sd-section--dark .sd-lead {
  color: var(--sd-text-dark-muted);
}

.sd-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  box-sizing: border-box;
  max-width: 100%;
  min-height: 2.75rem;
  padding: 0.7rem 1.25rem;
  border-radius: 10px;
  font-family: var(--sd-font-body);
  font-size: 0.95rem;
  font-weight: 600;
  text-decoration: none !important;
  border: 1px solid transparent;
  transition: background 0.2s ease, border-color 0.2s ease, color 0.2s ease, transform 0.2s ease;
}

.sd-btn:hover {
  transform: translateY(-1px);
}

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

.sd-btn--primary:hover {
  background: var(--sd-accent-dark);
  border-color: var(--sd-accent-dark);
  color: #fff !important;
}

.sd-btn--ghost {
  background: transparent;
  color: var(--sd-text-dark) !important;
  border-color: rgba(232, 238, 242, 0.28);
}

.sd-btn--ghost:hover {
  border-color: var(--sd-accent);
  color: #fff !important;
}

.sd-btn--secondary {
  background: transparent;
  color: var(--sd-text) !important;
  border-color: var(--sd-border-light);
}

.sd-btn--secondary:hover {
  border-color: var(--sd-accent);
  color: var(--sd-accent-dark) !important;
}

.sd-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.75rem;
}

.sd-grid {
  display: grid;
  gap: 1.25rem;
}

.sd-grid--2 {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.sd-grid--3 {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.sd-grid--4 {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

@media (max-width: 900px) {
  .sd-grid--3,
  .sd-grid--4 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 640px) {
  .sd-grid--2,
  .sd-grid--3,
  .sd-grid--4 {
    grid-template-columns: 1fr;
  }
}

.sd-card {
  background: var(--sd-bg-white);
  border: 1px solid var(--sd-border-light);
  border-radius: var(--sd-radius);
  padding: 1.35rem 1.4rem;
  transition: border-color 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
}

.sd-card:hover {
  border-color: rgba(26, 171, 184, 0.55);
  transform: translateY(-2px);
  box-shadow: 0 10px 30px rgba(16, 24, 32, 0.06);
}

.sd-section--dark .sd-card {
  background: var(--sd-bg-dark-elevated);
  border-color: var(--sd-border);
  color: var(--sd-text-dark);
}

.sd-section--dark .sd-card:hover {
  border-color: rgba(26, 171, 184, 0.55);
  box-shadow: var(--sd-shadow);
}

.sd-card__label {
  font-family: var(--sd-font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: var(--sd-accent);
  margin: 0 0 0.75rem;
}

.sd-card p {
  margin: 0;
  color: var(--sd-muted);
  line-height: 1.55;
  font-size: 0.98rem;
}

.sd-section--dark .sd-card p {
  color: var(--sd-text-dark-muted);
}

.sd-mono {
  font-family: var(--sd-font-mono);
}

.sd-link-arrow {
  color: var(--sd-accent);
  font-weight: 600;
  text-decoration: none !important;
}

.sd-link-arrow:hover {
  color: var(--sd-accent-dark);
}

.sd-reveal {
  opacity: 1;
  transform: none;
}

.js .sd-reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.js .sd-reveal.is-visible {
  opacity: 1;
  transform: none;
}

@media (prefers-reduced-motion: reduce) {
  .sd-reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .sd-btn:hover,
  .sd-card:hover {
    transform: none;
  }

  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}