/* ===== BrainSteady Blog Layout ===== */

:root {
    --bs-bg: #f5f7fb;
    --bs-surface: #ffffff;
    --bs-surface-soft: #f3f6ff;
    --bs-text-main: #0f172a;
    --bs-text-muted: #64748b;
    --bs-accent: #2563eb;
    --bs-accent-soft: rgba(37, 99, 235, 0.08);
    --bs-border-soft: #e2e8f0;
    --bs-radius-lg: 18px;
    --bs-radius-xl: 24px;
    --bs-shadow-soft: 0 18px 45px rgba(15, 23, 42, 0.08);
    --bs-shadow-subtle: 0 12px 30px rgba(15, 23, 42, 0.04);
    --white: #ffffff;
}

*,
*::before,
*::after {
    box-sizing: border-box;
}

body {
    margin: 0;
    padding: 0;
    font-family: system-ui, -apple-system, BlinkMacSystemFont, "SF Pro Text",
        "Segoe UI", sans-serif;
    background: radial-gradient(circle at top left, #e0e7ff 0, #f9fafb 45%, #f1f5f9 100%);
    color: var(--bs-text-main);
}



/* Layout */

.bs-header {
    padding: 24px 0 8px;
}

.bs-main {
    padding-bottom: 40px;
}

.bs-container {
    max-width: 1040px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Links */

a {
    color: var(--bs-accent);
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

/* Back link */

.back-link {
    font-size: 0.9rem;
    color: var(--bs-text-muted);
}

/* Intro */

.intro-section {
    padding-top: 8px;
    padding-bottom: 16px;
}

.page-title {
    margin: 0 0 6px;
    font-size: 2.2rem;
    font-weight: 800;
    letter-spacing: -0.03em;
}

.page-subtitle {
    margin: 0 0 26px;
    max-width: 640px;
    font-size: 0.98rem;
    color: var(--bs-text-muted);
}

.intro-card {
    margin-top: 8px;
    background: var(--bs-surface-soft);
    border-radius: 28px;
    padding: 26px 26px 24px;
    box-shadow: var(--bs-shadow-soft);
}

.intro-card h2 {
    margin-top: 0;
    margin-bottom: 10px;
    font-size: 1.2rem;
}

.intro-card p {
    margin: 0 0 8px;
    font-size: 0.97rem;
    color: var(--bs-text-main);
}

.intro-card ul {
    margin: 0 0 10px 18px;
    padding: 0;
    font-size: 0.97rem;
    color: var(--bs-text-main);
}

/* Topic filters */

.topic-section {
    padding-top: 8px;
    padding-bottom: 4px;
}

.topic-header {
    display: flex;
    align-items: center;
    margin-bottom: 6px;
}

.topic-label {
    font-size: 0.82rem;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: var(--bs-text-muted);
}

.topic-pills {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 10px; /* a bit more breathing room */
}

.topic-pill {
    border: none;
    border-radius: 999px;
    padding: 6px 16px;
    font-size: 0.86rem;
    background: var(--bs-surface);
    color: var(--bs-text-muted);
    box-shadow: 0 1px 4px rgba(15, 23, 42, 0.08);
    cursor: pointer;
    transition: background 0.15s ease, color 0.15s ease, box-shadow 0.15s ease,
        transform 0.06s ease;
}

.topic-pill:hover {
    transform: translateY(-1px);
    box-shadow: 0 6px 18px rgba(15, 23, 42, 0.08);
}

.topic-pill.active {
    background: var(--bs-accent);
    color: #eff6ff;
    box-shadow: 0 10px 28px rgba(37, 99, 235, 0.35);
}

/* caption under buttons – bolder + more spacing */
.topic-subtext {
    margin-top: 0;
    margin-bottom: 16px; /* extra line space to the posts */
    font-size: 0.86rem;
    font-weight: 600;
    color: var(--bs-text-muted);
}

/* Posts grid */

.posts-section {
    padding-top: 6px;
    padding-bottom: 10px;
}

.posts-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 20px;
}

/* Cards */

.post-card {
    background: var(--bs-surface);
    border-radius: var(--bs-radius-xl);
    overflow: hidden;
    box-shadow: var(--bs-shadow-subtle);
    display: flex;
    flex-direction: column;
    height: 100%;
    border: 1px solid rgba(148, 163, 184, 0.18);
    transition: transform 0.16s ease, box-shadow 0.16s ease, border-color 0.16s ease;
}

.post-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 20px 40px rgba(15, 23, 42, 0.12);
    border-color: rgba(37, 99, 235, 0.35);
}

/* Thumbnail image – controlled height, less cropping */
.post-image-wrapper {
    display: block;
    height: 190px;
    overflow: hidden;
    background: #020617;
}

.post-image-wrapper img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: top center;  /* show more of the top */
    display: block;
    transform: scale(1);          /* no extra zoom by default */
    transition: transform 0.35s ease;
}

.post-card:hover .post-image-wrapper img {
    transform: scale(1.04);
}

.post-content {
    padding: 16px 18px 18px;
    display: flex;
    flex-direction: column;
    gap: 6px;
    flex: 1;
}

.post-topic-pill {
    display: inline-flex;
    align-self: flex-start;
    padding: 3px 10px;
    border-radius: 999px;
    font-size: 0.72rem;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    background: var(--bs-accent-soft);
    color: #1d4ed8;
}

.post-title {
    margin: 2px 0 2px;
    font-size: 1.02rem;
    line-height: 1.3;
}

.post-title a {
    color: var(--bs-text-main);
    text-decoration: none;
}

.post-title a:hover {
    color: var(--bs-accent);
}

.post-excerpt {
    margin: 0;
    font-size: 0.9rem;
    line-height: 1.45;
    color: var(--bs-text-muted);
}

.post-readmore {
    margin-top: auto;
    font-size: 0.88rem;
    font-weight: 500;
}

/* Footer */

/* ========== Footer ========== */


.contact-info {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.contact-details {
  background-color: var(--background-light);
  border: 1px solid #ddd;
  border-radius: 0.5rem;
  padding: 0 1rem;
  font-size: 1rem;
  transition: all 0.3s ease;
  outline: none;
}

.contact-details summary {
  font-weight: 600;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  color: var(--text-primary);
  font-size: 1rem;
  height: 54px;
  outline: none;
}

.contact-details summary .chevron-icon {
  transition: transform 0.3s ease;
  font-size: 0.9rem;
  color: var(--primary-color);
}

.contact-details summary span i {
  margin-right: 10px;
}

/* Rotate when open */
.contact-details[open] summary .chevron-icon {
  transform: rotate(180deg);
}

.contact-details summary::-webkit-details-marker {
  display: none;
}

.contact-details p {
  margin-left: 1.85rem;
  padding-bottom: 1.05rem;
}

.contact-details a {
  color: var(--primary-color);
  text-decoration: underline;
  font-weight: 700;
  word-break: break-all;
}

.contact-details[open] {
  background-color: #e4ebfa;
  border-color: #c7d2fe;
}


footer {
  background-color: var(--background-dark);
  color: var(--white);
  padding: 4rem 0 2rem;
  position: relative;
  z-index: 1;
}

footer ul, 
footer li {
  list-style: none;
  margin: 0;
  padding: 0;
}

footer a {
  text-decoration: none;
  color: white;
}

footer a:hover {
  text-decoration: underline; /* Optional but good UX */
}




footer .container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 4rem;
}

footer::before {
  position: absolute;
  content: "";
  width: 100%;
  height: 100%;
  top: 0;
  background: url("../images/constellation.png") repeat center center/40%;
  z-index: -1;
}

.footer-content {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 3rem;
  margin-bottom: 2rem;
}

.footer-logo {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  justify-content: flex-start;
  gap: 0.5rem;
  margin-bottom: 1rem;
}

.footer-logo img {
  width: 115px;
  height: 115px;
  filter: brightness(0) invert(1);
}

.footer-logo span {
  font-size: 1.6rem;
  font-weight: 700;
  word-break: break-all;
}

.footer-description {
  color: rgba(255, 255, 255, 0.8);
  line-height: 1.6;
  margin-bottom: 0.5rem;
}

.social-links {
  display: flex;
  gap: 1.5rem;
  margin-top: 1.5rem;
}

.social-links a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 6px;
  transition: all 0.3s ease;
}

.social-links a:hover {
  background: var(--primary-color);
  transform: translateY(-2px);
}



.footer-title {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 1rem;
  color: var(--white);
}

.footer-links {
  list-style: none;
  padding-left: 0;
}

.footer-links li {
  margin-bottom: 1rem;
}

.footer-links li a {
  color: rgba(255, 255, 255, 0.8);
  font-weight: 500;
  transition: color 0.3s ease;
}

.footer-links li a:hover {
  color: var(--primary-light);
}

footer .contact-info {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  justify-content: flex-start;
  background: transparent !important;
  padding: 0 !important;
}

footer .contact-details {
  background: none;
  border: 1px solid #465575;
  width: 100%;
}

footer .contact-details p {
  margin-left: 0;
  padding-bottom: 0;
  margin: 0;
}

footer .contact-details summary {
  color: var(--white);
  height: 46px;
}

footer .contact-info a {
  color: #3b82f6;
  margin-bottom: 0.5rem;
  display: flex;
  align-items: center;
  justify-content: flex-start;
  gap: 10px;
  word-break: break-all;
}

footer .contact-details[open] {
  background: none;
  border-color: #5e6d8b;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1.5rem;
}

.footer-legal {
  display: flex;
  gap: 2rem;
}

.footer-legal a {
  color: rgba(255, 255, 255, 0.7);
  font-size: 1rem;
  font-weight: 500;
  transition: color 0.3s ease;
}

.footer-legal a:hover {
  color: var(--primary-light);
}

.copyright {
  color: rgba(255, 255, 255, 0.7);
  font-size: 1rem;
}
/* Responsive */

@media (max-width: 960px) {
    .posts-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .post-image-wrapper {
        height: 180px;
    }

      .footer-content {
    grid-template-columns: 1fr 1fr;
    padding-left: 1.5rem;
    padding-right: 1.5rem;
    gap: 3rem;
  }

}

@media (max-width: 720px) {
    .page-title {
        font-size: 1.85rem;
    }

    .intro-card {
        padding: 20px 18px 18px;
        border-radius: 22px;
    }

    .posts-grid {
        grid-template-columns: 1fr;
    }

    .post-image-wrapper {
        height: 200px;
    }

    .footer-content {
    grid-template-columns: 1fr;
    padding: 0;
    gap: 3rem;
  }
}

@media (max-width: 560px) {
  .footer-content {
    gap: 0.5rem !important;
  }
}