/* ==========================================================================
   OPTIVANCE — Tech Blog Styles (Strictly < 250 lines)
   ========================================================================== */

/* Hero Section */
.blog-hero {
  position: relative;
  background: radial-gradient(circle at 85% 45%, rgba(16, 185, 129, 0.22) 0%, transparent 55%),
              linear-gradient(135deg, #01291D 0%, #033D2B 50%, #012B1E 100%);
  padding: 56px 0 48px;
  overflow: hidden;
  border-bottom: 1px solid rgba(16, 185, 129, 0.15);
}
.blog-hero__breadcrumb { display: inline-flex; align-items: center; gap: 8px; font-size: 0.875rem; font-weight: 500; color: rgba(255, 255, 255, 0.7); margin-bottom: var(--sp-3); }
.blog-hero__home-icon { width: 15px; height: 15px; color: #10B981; }
.blog-hero__breadcrumb a { color: rgba(255, 255, 255, 0.8); text-decoration: none; transition: color var(--transition-fast); }
.blog-hero__breadcrumb a:hover { color: #34D399; }
.blog-hero__breadcrumb .sep { color: rgba(255, 255, 255, 0.4); }
.blog-hero__breadcrumb .current { color: #FFFFFF; font-weight: 600; }
.blog-hero__title { font-size: clamp(2.2rem, 4vw, 3.25rem); font-weight: 800; color: #FFFFFF; letter-spacing: -0.025em; margin-bottom: var(--sp-3); line-height: 1.15; }
.blog-hero__subtitle { font-size: 1.05rem; line-height: 1.6; color: rgba(255, 255, 255, 0.82); max-width: 640px; margin: 0; }

/* Blog Section & Cards */
.blog-section { padding: 56px 0 80px; background: var(--color-bg); }
.blog-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; margin-bottom: 60px; }

.blog-card {
  background: var(--color-surface); border: 1px solid var(--color-border);
  border-radius: 20px; overflow: hidden; display: flex; flex-direction: column;
  transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
}
[data-theme="light"] .blog-card { background: #FFFFFF; border-color: #E2E8F0; box-shadow: 0 4px 20px rgba(0, 0, 0, 0.035); }
.blog-card:hover { transform: translateY(-4px); border-color: #059669; box-shadow: 0 14px 34px rgba(5, 150, 105, 0.14); }

.blog-card__header {
  height: 130px; padding: 20px; position: relative;
  background: linear-gradient(135deg, rgba(5, 150, 105, 0.15) 0%, rgba(16, 185, 129, 0.05) 100%);
  display: flex; align-items: flex-end; justify-content: space-between;
  border-bottom: 1px solid var(--color-border);
}
.blog-card__icon-wrap {
  width: 48px; height: 48px; border-radius: 12px; background: #059669;
  display: flex; align-items: center; justify-content: center; color: #FFFFFF;
  box-shadow: 0 4px 14px rgba(5, 150, 105, 0.25);
}
.blog-card__icon-wrap svg { width: 24px; height: 24px; }

.blog-card__platform {
  display: inline-flex; align-items: center; gap: 6px; padding: 5px 12px;
  border-radius: 9999px; background: rgba(0, 0, 0, 0.3); color: #FFFFFF;
  font-size: 0.75rem; font-weight: 600; backdrop-filter: blur(4px);
}
[data-theme="light"] .blog-card__platform { background: rgba(15, 23, 42, 0.8); }
.blog-card__platform svg { width: 13px; height: 13px; }

.blog-card__body { padding: 24px 22px 22px; display: flex; flex-direction: column; flex-grow: 1; }
.blog-card__meta { display: flex; align-items: center; gap: 10px; font-size: 0.825rem; color: var(--color-text-muted); margin-bottom: 10px; }
.blog-card__meta-dot { width: 4px; height: 4px; border-radius: 50%; background: #059669; }
.blog-card__title { font-size: 1.15rem; font-weight: 700; color: var(--color-text); margin: 0 0 10px; line-height: 1.4; letter-spacing: -0.015em; }
.blog-card__desc { font-size: 0.875rem; line-height: 1.55; color: var(--color-text-muted); margin: 0 0 16px; flex-grow: 1; }
.blog-card__tags { display: flex; flex-wrap: wrap; gap: 5px; margin-bottom: 18px; }
.blog-tag {
  display: inline-block; font-size: 0.72rem; font-weight: 600; padding: 3px 8px;
  border-radius: 9999px; background: rgba(5, 150, 105, 0.1); color: #059669;
}
[data-theme="dark"] .blog-tag { background: rgba(5, 150, 105, 0.2); color: #34D399; }

.blog-card__cta {
  display: inline-flex; align-items: center; gap: 6px; font-size: 0.875rem;
  font-weight: 700; color: #059669; text-decoration: none; transition: all 0.2s ease;
  align-self: flex-start;
}
.blog-card__cta svg { width: 15px; height: 15px; transition: transform 0.2s ease; }
.blog-card__cta:hover { color: #047857; }
.blog-card__cta:hover svg { transform: translate(3px, -3px); }

/* Responsive */
@media (max-width: 1100px) {
  .blog-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 720px) {
  .blog-grid { grid-template-columns: 1fr; }
}