/* ============================================================
   BLOG PAGE — Hero, grid, expandable cards, newsletter
   ============================================================ */

/* ============================================
   BLOG HERO
   ============================================ */
.blog-hero {
  position: relative;
  padding: clamp(6rem, 12vw, 9rem) 0 clamp(3rem, 6vw, 5rem);
  overflow: hidden;
  background: var(--color-bg);
  isolation: isolate;
}

.blog-hero__backdrop {
  position: absolute;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  overflow: hidden;
}

.blog-hero__glow {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.5;
}

.blog-hero__glow--1 {
  top: -10%;
  left: -10%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(30, 111, 217, 0.3), transparent 70%);
}

[data-theme="dark"] .blog-hero__glow--1 {
  background: radial-gradient(circle, rgba(74, 143, 227, 0.4), transparent 70%);
  opacity: 0.7;
}

.blog-hero__glow--2 {
  bottom: -20%;
  right: -10%;
  width: 600px;
  height: 600px;
  background: radial-gradient(
    circle,
    rgba(74, 143, 227, 0.22),
    transparent 70%
  );
}

[data-theme="dark"] .blog-hero__glow--2 {
  background: radial-gradient(circle, rgba(56, 189, 248, 0.3), transparent 70%);
  opacity: 0.7;
}

.blog-hero__content {
  max-width: 760px;
  margin: 0 auto;
  text-align: center;
}

.blog-hero__title {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4.5vw, 3.25rem);
  font-weight: var(--fw-extrabold);
  color: var(--color-text);
  letter-spacing: var(--tracking-tighter);
  line-height: 1.1;
  margin: 1rem 0 1.25rem;
}

.blog-hero__lead {
  font-size: var(--fs-md);
  color: var(--color-text-secondary);
  line-height: 1.6;
  max-width: 620px;
  margin: 0 auto;
}

/* ============================================
   BLOG SECTION
   ============================================ */
.blog-section {
  padding: clamp(2rem, 5vw, 4rem) 0 clamp(4rem, 8vw, 6rem);
  background: var(--color-bg);
}

/* ============================================
   BLOG GRID
   ============================================ */
.blog-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(1rem, 2.5vw, 2rem);
  margin-bottom: 4rem;
}

/* ============================================
   BLOG CARD
   ============================================ */
.blog-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-2xl);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition:
    transform var(--duration-base) var(--ease-out),
    box-shadow var(--duration-base) var(--ease-out),
    border-color var(--duration-base) var(--ease-out),
    grid-column var(--duration-slow) var(--ease-out);
  display: flex;
  flex-direction: column;
  position: relative;
}

.blog-card:hover:not(.is-expanded) {
  transform: translateY(-6px);
  box-shadow: var(--shadow-xl);
  border-color: var(--color-accent);
}

/* Trigger button — wraps media + body */
.blog-card__trigger {
  background: none;
  border: none;
  padding: 0;
  margin: 0;
  text-align: left;
  cursor: pointer;
  color: inherit;
  font: inherit;
  width: 100%;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.blog-card__trigger:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 4px;
  border-radius: var(--radius-2xl);
}

/* ============================================
   CARD MEDIA — Image / Placeholder
   ============================================ */
.blog-card__media {
  position: relative;
  aspect-ratio: 16 / 10;
  overflow: hidden;
  background: linear-gradient(135deg, #1b4f8c 0%, #0a2540 100%);
  display: flex;
  align-items: center;
  justify-content: center;
}

.blog-card__media--alt {
  background: linear-gradient(135deg, #2a4a6e 0%, #112847 100%);
}

.blog-card__media--green {
  background: linear-gradient(135deg, #047857 0%, #064e3b 100%);
}

.blog-card__media--purple {
  background: linear-gradient(135deg, #6b21a8 0%, #3b0764 100%);
}

.blog-card__media--orange {
  background: linear-gradient(135deg, #c2410c 0%, #7c2d12 100%);
}

.blog-card__media--teal {
  background: linear-gradient(135deg, #0f766e 0%, #134e4a 100%);
}

.blog-card__media::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(
      ellipse at top right,
      rgba(255, 255, 255, 0.12),
      transparent 60%
    ),
    linear-gradient(180deg, transparent 50%, rgba(0, 0, 0, 0.3) 100%);
  pointer-events: none;
}

.blog-card__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--duration-slow) var(--ease-out);
}

.blog-card:hover:not(.is-expanded) .blog-card__media img {
  transform: scale(1.06);
}

.blog-card__placeholder {
  color: rgba(255, 255, 255, 0.4);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform var(--duration-slow) var(--ease-out);
}

.blog-card__placeholder svg {
  width: 64px;
  height: 64px;
}

.blog-card:hover:not(.is-expanded) .blog-card__placeholder {
  transform: scale(1.1);
}

.blog-card__category {
  position: absolute;
  top: 1rem;
  left: 1rem;
  display: inline-flex;
  align-items: center;
  padding: 0.4rem 0.85rem;
  background: rgba(255, 255, 255, 0.95);
  color: var(--brand-primary);
  font-size: 0.7rem;
  font-weight: var(--fw-bold);
  text-transform: uppercase;
  letter-spacing: var(--tracking-wider);
  border-radius: var(--radius-full);
  backdrop-filter: blur(10px);
  z-index: 2;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

/* ============================================
   CARD BODY
   ============================================ */
.blog-card__body {
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
  flex: 1;
}

.blog-card__title {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: var(--fw-bold);
  color: var(--color-text);
  letter-spacing: var(--tracking-tight);
  line-height: 1.3;
  margin: 0;
}

.blog-card__excerpt {
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  line-height: 1.55;
  margin: 0;
  flex: 1;
}

.blog-card__cta {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--color-accent);
  font-weight: var(--fw-semibold);
  font-size: 0.875rem;
  margin-top: 0.25rem;
  transition: gap var(--duration-base) var(--ease-out);
}

.blog-card__trigger:hover .blog-card__cta {
  gap: 0.75rem;
}

.blog-card__cta-icon {
  width: 16px;
  height: 16px;
  transition: transform var(--duration-base) var(--ease-out);
}

/* ============================================
   CARD EXPANSION (collapsed by default)
   ============================================ */
.blog-card__expansion {
  max-height: 0;
  overflow: hidden;
  opacity: 0;
  transition:
    max-height var(--duration-slow) var(--ease-out),
    opacity var(--duration-base) var(--ease-out);
}

.blog-card.is-expanded .blog-card__expansion {
  max-height: 4000px;
  opacity: 1;
}

.blog-card__expansion-inner {
  padding: 0 2rem 2rem;
  border-top: 1px solid var(--color-border);
  margin-top: 0;
  padding-top: 2rem;
}

/* When card is expanded — span full width */
.blog-card.is-expanded {
  grid-column: 1 / -1;
  box-shadow: var(--shadow-2xl);
  border-color: var(--color-accent);
}

.blog-card.is-expanded .blog-card__trigger {
  flex-direction: row;
  align-items: stretch;
}

.blog-card.is-expanded .blog-card__media {
  width: 40%;
  aspect-ratio: auto;
  min-height: 320px;
  flex-shrink: 0;
}

.blog-card.is-expanded .blog-card__body {
  padding: 2rem;
}

.blog-card.is-expanded .blog-card__title {
  font-size: clamp(1.5rem, 3vw, 2rem);
  line-height: 1.2;
}

.blog-card.is-expanded .blog-card__excerpt {
  font-size: 1rem;
  line-height: 1.65;
}

.blog-card.is-expanded .blog-card__cta {
  display: none;
}

/* Rotate the chevron when expanded */
.blog-card.is-expanded .blog-card__cta-icon {
  transform: rotate(180deg);
}

/* ============================================
   ARTICLE CONTENT — Inside expansion
   ============================================ */
.blog-content {
  max-width: 800px;
  margin: 0 auto;
}

.blog-content p {
  font-size: var(--fs-base);
  color: var(--color-text);
  line-height: 1.75;
  margin: 0 0 1.25rem;
}

.blog-content p:last-child {
  margin-bottom: 0;
}

.blog-content strong {
  color: var(--color-text);
  font-weight: var(--fw-semibold);
}

.blog-content h3 {
  font-family: var(--font-display);
  font-size: clamp(1.15rem, 2.2vw, 1.4rem);
  font-weight: var(--fw-bold);
  color: var(--color-text);
  letter-spacing: var(--tracking-tight);
  line-height: 1.3;
  margin: 2rem 0 1rem;
}

.blog-content ul {
  margin: 0 0 1.5rem;
  padding-left: 0;
  list-style: none;
}

.blog-content ul li {
  position: relative;
  padding-left: 1.75rem;
  margin-bottom: 0.65rem;
  color: var(--color-text);
  line-height: 1.65;
}

.blog-content ul li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 16px;
  height: 16px;
  background-image: url("data:image/svg+xml;charset=UTF-8,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%231E6FD9' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3e%3cpolyline points='20 6 9 17 4 12'/%3e%3c/svg%3e");
  background-repeat: no-repeat;
  background-size: contain;
}

/* ============================================
   CLOSE BUTTON
   ============================================ */
.blog-card__close {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  margin-top: 2rem;
  padding: 0.75rem 1.5rem;
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  color: var(--color-text);
  font-weight: var(--fw-semibold);
  font-size: 0.875rem;
  cursor: pointer;
  transition:
    background var(--duration-base) var(--ease-out),
    border-color var(--duration-base) var(--ease-out),
    transform var(--duration-base) var(--ease-out);
}

.blog-card__close:hover {
  background: var(--color-surface);
  border-color: var(--color-accent);
  transform: translateY(-2px);
}

.blog-card__close svg {
  width: 16px;
  height: 16px;
}

/* ============================================
   NEWSLETTER CTA
   ============================================ */
.blog-newsletter {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 1.5rem;
  align-items: center;
  padding: clamp(1.5rem, 3vw, 2.25rem);
  background: linear-gradient(
    135deg,
    var(--color-surface) 0%,
    var(--color-bg-alt) 100%
  );
  border: 1px solid var(--color-border);
  border-radius: var(--radius-2xl);
  box-shadow: var(--shadow-md);
  position: relative;
  overflow: hidden;
  isolation: isolate;
}

.blog-newsletter::before {
  content: "";
  position: absolute;
  top: -40%;
  right: -10%;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(30, 111, 217, 0.1), transparent 70%);
  border-radius: 50%;
  pointer-events: none;
  z-index: -1;
}

[data-theme="dark"] .blog-newsletter::before {
  background: radial-gradient(
    circle,
    rgba(74, 143, 227, 0.15),
    transparent 70%
  );
}

.blog-newsletter__icon {
  width: 64px;
  height: 64px;
  border-radius: var(--radius-lg);
  background: var(--gradient-primary);
  color: #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  box-shadow:
    0 10px 24px rgba(30, 111, 217, 0.3),
    inset 0 1px 0 rgba(255, 255, 255, 0.25);
}

.blog-newsletter__icon svg {
  width: 28px;
  height: 28px;
}

.blog-newsletter__title {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: var(--fw-bold);
  color: var(--color-text);
  margin: 0 0 0.35rem;
  letter-spacing: var(--tracking-tight);
}

.blog-newsletter__desc {
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  margin: 0;
  line-height: 1.5;
}

/* Active state for nav link */
.nav__link--active {
  color: var(--color-accent);
  position: relative;
}

.nav__link--active::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -6px;
  height: 2px;
  background: var(--gradient-primary);
  border-radius: 2px;
}

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 1100px) {
  .blog-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .blog-card.is-expanded .blog-card__media {
    width: 35%;
    min-height: 280px;
  }
}

@media (max-width: 992px) {
  .blog-hero {
    padding-top: 5rem;
  }

  .blog-card.is-expanded .blog-card__trigger {
    flex-direction: column;
  }
  .blog-card.is-expanded .blog-card__media {
    width: 100%;
    aspect-ratio: 16 / 9;
    min-height: auto;
  }

  .blog-newsletter {
    grid-template-columns: 1fr;
    text-align: center;
    gap: 1rem;
  }
  .blog-newsletter__icon {
    margin: 0 auto;
  }
}

@media (max-width: 768px) {
  .blog-grid {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }
  .blog-card.is-expanded {
    grid-column: auto;
  }
}

@media (max-width: 640px) {
  .blog-hero {
    padding-top: 4.5rem;
    padding-bottom: 2.5rem;
  }
  .blog-hero__title {
    font-size: clamp(1.5rem, 6vw, 2rem);
  }
  .blog-hero__lead {
    font-size: var(--fs-sm);
  }

  .blog-card__title {
    font-size: 1.05rem;
  }
  .blog-card__excerpt {
    font-size: 0.85rem;
  }
  .blog-card__body {
    padding: 1.25rem;
    gap: 0.65rem;
  }

  .blog-card.is-expanded .blog-card__title {
    font-size: 1.25rem;
  }
  .blog-card.is-expanded .blog-card__body {
    padding: 1.5rem;
  }
  .blog-card__expansion-inner {
    padding: 1.5rem 1.25rem 1.5rem;
  }
  .blog-content p {
    font-size: 0.9rem;
  }
  .blog-content h3 {
    font-size: 1.1rem;
    margin-top: 1.5rem;
  }
  .blog-content ul li {
    font-size: 0.875rem;
    padding-left: 1.5rem;
  }

  .blog-newsletter {
    padding: 1.5rem 1.25rem;
  }
  .blog-newsletter__icon {
    width: 52px;
    height: 52px;
  }
  .blog-newsletter__icon svg {
    width: 24px !important;
    height: 24px !important;
  }
  .blog-newsletter__title {
    font-size: 1.1rem;
  }
}

/* ============================================
   BLOG CARDS — Imagem real (substitui placeholder)
   ============================================ */
.blog-card__media {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16 / 10;
}

.blog-card__image {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform var(--duration-slow) var(--ease-out);
}

.blog-card:hover .blog-card__image {
  transform: scale(1.05);
}

.blog-card__media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(
    180deg,
    transparent 40%,
    rgba(10, 37, 64, 0.55) 100%
  );
  pointer-events: none;
  z-index: 1;
}

.blog-card__category {
  position: relative;
  z-index: 2;
}