:root {
  --accent: #009688;
  --accent-hover: #00796b;
  --text: #1a1a2e;
  --text-secondary: #5a5a7a;
  --bg: #ffffff;
  --bg-alt: #f7f8fa;
  --border: #e8e8ee;
  --radius: 16px;
  --shadow: 0 1px 3px rgba(0,0,0,.04), 0 4px 16px rgba(0,0,0,.06);
  --shadow-hover: 0 8px 30px rgba(0,0,0,.10);
  --transition: .35s cubic-bezier(.4,0,.2,1);
}

* {
  margin: 0; padding: 0; box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', -apple-system, system-ui, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

/* Navbar */
#mainNav {
  padding: .6rem 0;
  backdrop-filter: blur(12px);
  background: rgba(255,255,255,.92) !important;
}

#mainNav .navbar-brand img {
  transition: transform var(--transition);
}

#mainNav .navbar-brand img:hover {
  transform: scale(1.04);
}

.nav-link {
  color: var(--text-secondary) !important;
  font-weight: 500;
  font-size: .9rem;
  padding: .5rem 1rem !important;
  position: relative;
  transition: color var(--transition);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 2px;
  left: 1rem;
  right: 1rem;
  height: 2px;
  background: var(--accent);
  transform: scaleX(0);
  transition: transform var(--transition);
}

.nav-link:hover,
.nav-link.active {
  color: var(--text) !important;
}

.nav-link:hover::after,
.nav-link.active::after {
  transform: scaleX(1);
}

/* Hero */
.hero {
  display: flex;
  align-items: center;
  padding: 8rem 0 4rem;
  background: linear-gradient(135deg, #ffffff 0%, #f2f5f7 50%, #eaf0f2 100%);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 600px;
  height: 600px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(0,150,136,.05) 0%, transparent 70%);
  pointer-events: none;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: -30%;
  left: -10%;
  width: 400px;
  height: 400px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(0,150,136,.04) 0%, transparent 70%);
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 720px;
}

.hero-badge {
  display: inline-block;
  background: rgba(0,150,136,.08);
  color: var(--accent);
  font-size: .8rem;
  font-weight: 600;
  padding: .35em 1em;
  border-radius: 50px;
  margin-bottom: 1.5rem;
  letter-spacing: .3px;
}

.hero-title {
  font-size: 3.2rem;
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -.03em;
  color: var(--text);
  margin-bottom: 1.25rem;
}

.hero-subtitle {
  font-size: 1.15rem;
  color: var(--text-secondary);
  max-width: 580px;
  margin-bottom: 2rem;
  line-height: 1.8;
}

.hero-cta {
  display: inline-flex;
  align-items: center;
  background: var(--accent);
  color: #fff;
  font-weight: 600;
  font-size: .95rem;
  padding: .85rem 2.25rem;
  border-radius: 50px;
  text-decoration: none;
  transition: background var(--transition), transform var(--transition);
}

.hero-cta:hover {
  background: var(--accent-hover);
  color: #fff;
  transform: translateY(-2px);
}

/* Sections */
.section {
  padding: 4rem 0;
}

.bg-alt {
  background: var(--bg-alt);
}

.section-header {
  text-align: center;
  max-width: 620px;
  margin: 0 auto 2.5rem;
}

.section-tag {
  display: inline-block;
  background: rgba(0,150,136,.08);
  color: var(--accent);
  font-size: .78rem;
  font-weight: 600;
  padding: .3em 1em;
  border-radius: 50px;
  letter-spacing: .3px;
  margin-bottom: 1rem;
  text-transform: uppercase;
}

.section-title {
  font-size: 2.2rem;
  font-weight: 700;
  letter-spacing: -.02em;
  margin-bottom: 1rem;
  color: var(--text);
}

.section-desc {
  color: var(--text-secondary);
  font-size: 1.05rem;
  line-height: 1.7;
}

/* Cards */
.card-image {
  border: none;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: transform var(--transition), box-shadow var(--transition);
  background: var(--bg);
}

.card-image:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-hover);
}

.card-image-wrapper {
  overflow: hidden;
  height: 200px;
}

.card-image-wrapper img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .5s ease;
}

.card-image-wrapper--text {
  background: linear-gradient(135deg, #ffffff 0%, #f2f5f7 50%, #eaf0f2 100%);
}

.card-image:hover .card-image-wrapper img {
  transform: scale(1.05);
}

.card-image .card-body {
  padding: 1.5rem;
}

.card-badge {
  display: inline-block;
  background: var(--accent);
  color: #fff;
  font-size: .72rem;
  font-weight: 600;
  padding: .3em .8em;
  border-radius: 50px;
  margin-bottom: .75rem;
  letter-spacing: .2px;
}

.card-title {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: .5rem;
  color: var(--text);
}

.card-title-link {
  color: var(--text);
  text-decoration: none;
  transition: color var(--transition);
}

.card-title-link:hover {
  color: var(--accent);
}

.card-text {
  font-size: .92rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin: 0;
}

/* Floating contact button */
.fab {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  z-index: 1050;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: .75rem;
}

.fab-toggle {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  border: none;
  background: #25D366;
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  box-shadow: 0 4px 16px rgba(37,211,102,.35);
  transition: transform var(--transition), box-shadow var(--transition);
}

.fab-toggle:hover {
  transform: scale(1.05);
  box-shadow: 0 6px 24px rgba(37,211,102,.45);
}

.fab-menu {
  display: none;
  flex-direction: column;
  gap: .5rem;
}

.fab.open .fab-menu {
  display: flex;
}

.fab-option {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  background: #fff;
  padding: .65rem 1.1rem;
  border-radius: 50px;
  text-decoration: none;
  font-size: .9rem;
  font-weight: 600;
  color: var(--text);
  box-shadow: 0 2px 12px rgba(0,0,0,.1);
  transition: transform var(--transition), box-shadow var(--transition);
  white-space: nowrap;
}

.fab-option:hover {
  transform: translateX(-4px);
  box-shadow: 0 4px 20px rgba(0,0,0,.14);
}

/* Footer */
.footer {
  background: var(--text);
  color: #ccc;
  padding: 3rem 0 1.5rem;
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: flex-start;
  gap: 2rem;
  margin-bottom: 2rem;
}

.footer-brand p {
  margin: .75rem 0 0;
  font-size: .9rem;
  color: #999;
  max-width: 280px;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem;
}

.footer-links a {
  color: #bbb;
  text-decoration: none;
  font-size: .9rem;
  font-weight: 500;
  transition: color var(--transition);
}

.footer-links a:hover {
  color: #fff;
}

.footer-bottom {
  text-align: center;
  padding-top: 2rem;
  border-top: 1px solid rgba(255,255,255,.08);
  font-size: .85rem;
  color: #777;
}

/* Fade-in animation */
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity .6s ease, transform .6s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Responsive */
@media (max-width: 768px) {
  .hero {
    padding: 6rem 0 3rem;
  }

  .hero-title {
    font-size: 2.2rem;
  }

  .hero-subtitle {
    font-size: 1rem;
  }

  .section-title {
    font-size: 1.7rem;
  }

  .section {
    padding: 3rem 0;
  }

  .footer-inner {
    flex-direction: column;
    align-items: center;
    text-align: center;
  }

  .footer-brand p {
    max-width: 100%;
  }
}

@media (max-width: 576px) {
  .hero-title {
    font-size: 1.8rem;
  }

  #mainNav .container {
    padding-left: 1rem;
    padding-right: 1rem;
  }
}

/* Blog */
.blog-header {
  padding: 8rem 0 4rem;
  background: linear-gradient(135deg, #ffffff 0%, #f2f5f7 50%, #eaf0f2 100%);
  text-align: center;
}

.blog-title {
  font-size: 3rem;
  font-weight: 800;
  letter-spacing: -.03em;
  line-height: 1.15;
  color: var(--text);
  margin-bottom: 1.25rem;
}

.blog-intro {
  color: var(--text-secondary);
  font-size: 1.1rem;
  line-height: 1.8;
  max-width: 620px;
  margin: 0 auto;
}

.blog-list {
  align-items: stretch;
}

.blog-card {
  display: flex;
  flex-direction: column;
}

.blog-card .card-body {
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.blog-card .card-text {
  flex-grow: 1;
}

.blog-meta {
  font-size: .8rem;
  color: var(--text-secondary);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: .3px;
  margin-bottom: .5rem;
}

.blog-read-more {
  display: inline-flex;
  align-items: center;
  color: var(--accent);
  font-weight: 600;
  font-size: .9rem;
  text-decoration: none;
  margin-top: 1rem;
  transition: color var(--transition);
}

.blog-read-more::after {
  content: '→';
  margin-left: .35rem;
  transition: transform var(--transition);
}

.blog-read-more:hover {
  color: var(--accent-hover);
}

.blog-read-more:hover::after {
  transform: translateX(4px);
}

/* Article page */
.post {
  padding: 8rem 0 4rem;
}

.post .container {
  max-width: 720px;
}

.post-back {
  display: inline-block;
  color: var(--text-secondary);
  text-decoration: none;
  font-size: .9rem;
  font-weight: 500;
  margin-bottom: 2rem;
  transition: color var(--transition);
}

.post-back:hover {
  color: var(--accent);
}

.post-title {
  font-size: 2.6rem;
  font-weight: 800;
  letter-spacing: -.02em;
  line-height: 1.2;
  color: var(--text);
  margin-bottom: .75rem;
}

.post-meta {
  font-size: .85rem;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: .3px;
  margin-bottom: 2rem;
}

.post-cover {
  width: 100%;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  margin-bottom: 2.5rem;
}

.post-body {
  color: var(--text);
  font-size: 1.02rem;
  line-height: 1.8;
}

.post-body h2,
.post-body h3 {
  color: var(--text);
  font-weight: 700;
  letter-spacing: -.01em;
  margin: 2.5rem 0 1rem;
}

.post-body h2 {
  font-size: 1.5rem;
}

.post-body h3 {
  font-size: 1.2rem;
}

.post-body p {
  margin-bottom: 1.25rem;
}

.post-body ul,
.post-body ol {
  margin-bottom: 1.25rem;
  padding-left: 1.4rem;
}

.post-body li {
  margin-bottom: .5rem;
}

.post-body a {
  color: var(--accent);
}

.post-body img {
  max-width: 100%;
  border-radius: var(--radius);
}

.post-body code {
  background: var(--bg-alt);
  color: var(--accent-hover);
  padding: .15em .45em;
  border-radius: 6px;
  font-size: .9em;
}

.post-body pre {
  background: var(--bg-alt);
  border-radius: var(--radius);
  padding: 1.25rem;
  overflow-x: auto;
  margin-bottom: 1.5rem;
}

.post-body pre code {
  background: transparent;
  padding: 0;
  color: var(--text);
}

.post-body blockquote {
  border-left: 4px solid var(--accent);
  background: var(--bg-alt);
  padding: 1rem 1.25rem;
  border-radius: 0 var(--radius) var(--radius) 0;
  margin: 1.5rem 0;
  color: var(--text-secondary);
}

.post-body table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  margin: 2rem 0;
  font-size: .92rem;
  line-height: 1.6;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}

.post-body th,
.post-body td {
  border-bottom: 1px solid var(--border);
  padding: .85rem 1.1rem;
  text-align: left;
  vertical-align: top;
}

.post-body tr:last-child td {
  border-bottom: none;
}

.post-body thead th {
  background: var(--bg-alt);
  color: var(--text);
  font-size: .76rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .35px;
  white-space: nowrap;
}

.post-body tbody tr {
  transition: background var(--transition);
}

.post-body tbody tr:hover {
  background: rgba(0, 150, 136, .04);
}

.post-body td:first-child {
  font-weight: 600;
  color: var(--accent-hover);
  white-space: nowrap;
}

@media (max-width: 768px) {
  .post-body table {
    display: block;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }

  .post-body thead th {
    white-space: normal;
  }

  .post-body td:first-child {
    white-space: normal;
  }
}

.blog-cta {
  margin-top: 3.5rem;
  padding: 2.5rem;
  text-align: center;
  background: var(--bg-alt);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.blog-cta h2 {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: .5rem;
}

.blog-cta p {
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
}

.blog-cta-btn {
  display: inline-flex;
  align-items: center;
  background: var(--accent);
  color: #fff;
  font-weight: 600;
  font-size: .95rem;
  padding: .85rem 2.25rem;
  border-radius: 50px;
  text-decoration: none;
  transition: background var(--transition), transform var(--transition);
}

.blog-cta-btn:hover {
  background: var(--accent-hover);
  color: #fff;
  transform: translateY(-2px);
}

@media (max-width: 768px) {
  .blog-header {
    padding: 6rem 0 3rem;
  }

  .blog-title {
    font-size: 2rem;
  }

  .post {
    padding: 6rem 0 3rem;
  }

  .post-title {
    font-size: 1.8rem;
  }

  .post .container {
    padding-left: 1.25rem;
    padding-right: 1.25rem;
  }

  .blog-cta {
    padding: 1.75rem 1.25rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .blog-list .fade-in {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .lightbox,
  .lightbox img {
    transition: none;
  }
}

/* Image lightbox */
.post-cover,
.post-body img {
  cursor: zoom-in;
}

.lightbox {
  position: fixed;
  inset: 0;
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem;
  background: rgba(26, 26, 46, .92);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition), visibility var(--transition);
  cursor: zoom-out;
}

.lightbox.open {
  opacity: 1;
  visibility: visible;
}

.lightbox figure {
  margin: 0;
  max-width: 92vw;
  max-height: 85vh;
  display: flex;
  align-items: center;
  justify-content: center;
}

.lightbox img {
  max-width: 92vw;
  max-height: 85vh;
  width: auto;
  height: auto;
  border-radius: var(--radius);
  box-shadow: var(--shadow-hover);
  cursor: zoom-out;
  transform: scale(.96);
  transition: transform var(--transition);
}

.lightbox.open img {
  transform: scale(1);
}

.lightbox-close {
  position: absolute;
  top: 1.25rem;
  right: 1.25rem;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: none;
  background: rgba(255,255,255,.12);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: background var(--transition), transform var(--transition);
}

.lightbox-close:hover {
  background: rgba(255,255,255,.22);
  transform: rotate(90deg);
}

.lightbox-close svg {
  width: 20px;
  height: 20px;
}