body {
  background: #000;
  color: #fff;
  font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
  overflow-x: hidden;
  scroll-behavior: smooth;
}
a {
  text-decoration: none;
  color: inherit;
}

img {
  width: 100%;
  display: block;
}

.container {
  width: 100%;
  margin: auto;
  padding: 100px 50px;
}

/* =========================
       BLOG HERO
    ========================== */

.blog-top {
  margin-bottom: 80px;
}

.blog-title-row {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 40px;
  margin-bottom: 40px;
}

.blog-title {
  font-size: 70px;
  line-height: 0.95;
  font-weight: 600;
  max-width: 70%;
  letter-spacing: -0.5px;
}

.blog-date {
  padding: 10px 18px;
  border-radius: 999px;
  background-color: #fff;
  color: #000;
  font-size: 16px;
  white-space: nowrap;
}

.blog-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 30px;
}

.blog-category {
  font-size: 22px;
  color: #a1a1a1;
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 12px;
}

.blog-category span {
  letter-spacing: 0.5px;
}

.share-icons {
  display: flex;
  align-items: center;
  gap: 15px;
}

.share-btn {
  width: 35px;
  height: 35px;
  border-radius: 50%;
  background-color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: 0.3s ease;
  cursor: pointer;
}

.share-btn svg {
  width: 20px;
  height: 20px;
}

/* =========================
       CONTENT LAYOUT
    ========================== */

.blog-layout {
  display: flex;
  gap: 40px;
  align-items: flex-start;
}

.blog-main {
  width: 75%;
}

.blog-sidebar {
  width: 25%;
  position: sticky;
  top: 30px;
}

/* =========================
       BLOG IMAGE
    ========================== */

.blog-image {
  width: 100%;
  height: 600px;
  border-radius: 30px;
  overflow: hidden;
  margin-bottom: 60px;
}

.blog-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* =========================
       BLOG CONTENT
    ========================== */

.blog-content h3 {
  font-size: 32px;
  font-weight: 500;
  margin-bottom: 24px;
  margin-top: 50px;
  scroll-margin-top: 60px;
}

.blog-content p {
  font-size: 16px;
  line-height: 1.9;
  color: #d1d1d1;
  margin-bottom: 22px;
}

.blog-content span {
  color: #fff;
  display: block;
  font-size: 18px;
}

.blog-content ul {
  padding-left: 20px;
  margin-bottom: 25px;
}

.blog-content li {
  margin-bottom: 12px;
  font-size: 16px;
  color: #d1d1d1;
}

/* =========================
       SIDEBAR
    ========================== */

.toc-box {
  position: relative;
  background: rgba(255, 255, 255, 0.25);
  border: 1px solid #a1a1a1;
  backdrop-filter: blur(20px);
  border-radius: 32px;
  padding: 40px;
  overflow: hidden;
}

.gemini-blur svg {
  position: absolute;
  filter: blur(30px);
  width: 500px;
  height: 500px;
  top: -160px;
  right: -160px;
  rotate: -35deg;
  z-index: 1;
}

.toc-inner {
  position: relative;
  z-index: 2;
}

.toc-title {
  font-size: 32px;
  margin-bottom: 35px;
  font-weight: 500;
}

.toc-list {
  display: flex;
  flex-direction: column;
  gap: 25px;
  margin-bottom: 40px;
}

.toc-list a {
  font-size: 16px;
  color: #f1f1f1;
  transition: 0.3s;
}

.toc-list a:hover {
  opacity: 0.7;
}

.separator {
  width: 100%;
  height: 1px;
  background: #a1a1a1;
  opacity: 0.5;
  margin: 40px 0;
}

.tags-title,
.share-title {
  font-size: 20px;
  margin-bottom: 20px;
  font-weight: 500;
}

.tags-wrap {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.tag {
  padding: 10px 18px;
  border-radius: 999px;
  background: #fff;
  color: #000;
  border: 1px solid #a1a1a1;
  font-size: 14px;
}

.small-share .share-btn {
  width: 35px;
  height: 35px;
}

/* =========================
       MOBILE ACCORDION
    ========================== */

.mobile-toc {
  display: none;
  margin-top: 40px;
  margin-bottom: 40px;
  border: 1px solid #a1a1a1;
  border-radius: 20px;
  overflow: hidden;
}

.accordion-btn {
  width: 100%;
  background: #111;
  color: #fff;
  border: none;
  padding: 20px;
  text-align: left;
  font-size: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
}

.accordion-content {
  max-height: 0;
  overflow: hidden;
  padding: 0 25px;
  background: #0d0d0d;
  transition:
    max-height 0.5s ease,
    padding 0.4s ease;
}

.accordion-content a {
  display: block;
  margin-bottom: 20px;
  font-size: 16px;
  color: #d1d1d1;
}

.mobile-toc.active .accordion-content {
  max-height: 500px;
  padding: 25px;
}

.accordion-btn span {
  transition: transform 0.4s ease;
}

.mobile-toc svg {
  transition: all 0.5s;
}

.mobile-toc.active .accordion-btn svg {
  transform: rotate(180deg);
}

/* =========================
       BOTTOM NAVIGATION
    ========================== */

.bottom-line {
  width: 100%;
  height: 1px;
  background: #2b2b2b;
  margin: 40px 0;
}

.blog-navigation {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
}

.nav-btn {
  display: flex;
  align-items: center;
  gap: 14px;
  font-size: 24px;
  color: #fff;
}

.nav-btn svg {
  width: 24px;
  height: 24px;
}

/* =========================
       RESPONSIVE
    ========================== */

@media (max-width: 1200px) {
  .blog-title {
    font-size: 60px;
  }

  .blog-layout {
    flex-direction: column;
  }

  .blog-main {
    width: 100%;
  }

  .blog-sidebar {
    display: none;
  }

  .mobile-toc {
    display: block;
  }

  .blog-content span {
    margin: 0 0 20px 0;
  }
}

@media (max-width: 768px) {
  .container {
    padding: 100px 20px;
  }

  .blog-title-row {
    flex-direction: column;
    gap: 20px;
    margin-bottom: 25px;
  }

  .blog-title {
    font-size: 40px;
    letter-spacing: -1px;
    max-width: 100%;
  }

  .blog-meta {
    flex-direction: column;
    align-items: flex-start;
    gap: 25px;
  }

  .blog-category {
    font-size: 20px;
  }

  .share-btn {
    width: 42px;
    height: 42px;
  }

  .blog-image {
    height: 320px;
    border-radius: 22px;
    margin-bottom: 40px;
  }

  .blog-content h3 {
    font-size: 28px;
  }

  .blog-content p {
    font-size: 15px;
    line-height: 1.8;
  }

  .blog-content span {
    margin: 0 0 20px 0;
  }

  .accordion-btn {
    font-size: 22px;
  }

  .accordion-btn .toc-span {
    margin: 0;
  }

  .blog-navigation {
    flex-direction: row;
    align-items: flex-start;
  }

  .nav-btn {
    font-size: 16px;
  }

  .blog-date {
    padding: 10px 20px;
    font-size: 14px;
  }

  .nav-btn svg {
    width: 20px;
    height: 20px;
  }
}