/* Oculaks - Brand New Unique Design 2026 */
/* Ice-Blue Corporate + Indigo Accent | Sharp 12px radius | Thin borders | Medium shadows | Sticky Side Nav + Split Hero */

:root {
  --bg: #F0F9FF;
  --text: #0F172A;
  --primary: #0F766E;
  --accent: #6366F1;
  --light: #E0F2FE;
  --card: #FFFFFF;
  --border: #CBD5E1;
  --shadow: 0 10px 25px rgba(15, 23, 42, 0.08);
  --radius: 12px;
  --font-main: 'Manrope', system-ui, sans-serif;
  --font-heading: 'Playfair Display', Georgia, serif;
}

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

body {
  font-family: var(--font-main);
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  font-size: 16.5px;
}

h1, h2, h3 { font-family: var(--font-heading); font-weight: 700; }

.container { max-width: 1280px; margin: 0 auto; padding: 0 24px; }

/* Header with overlay nav feel */
header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(240, 249, 255, 0.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 78px;
}

.logo {
  font-family: var(--font-heading);
  font-size: 2.4rem;
  font-weight: 800;
  color: var(--primary);
  letter-spacing: -1px;
}

nav ul {
  display: flex;
  gap: 38px;
  list-style: none;
}

nav a {
  color: #334155;
  font-weight: 600;
  font-size: 0.95rem;
  transition: color 0.2s;
}

nav a:hover { color: var(--primary); }

.btn {
  padding: 13px 28px;
  border-radius: var(--radius);
  font-weight: 700;
  font-size: 0.95rem;
  text-decoration: none;
  transition: all 0.3s ease;
  border: 1.5px solid var(--primary);
  color: var(--primary);
}

.btn:hover {
  background: var(--primary);
  color: white;
  transform: translateY(-1px);
}

.btn-accent {
  background: var(--accent);
  color: white;
  border-color: var(--accent);
}

.btn-accent:hover {
  background: #4F46E5;
  border-color: #4F46E5;
}

/* Split Screen Hero - Unique for this site */
.hero {
  display: grid;
  grid-template-columns: 1fr 1fr;
  min-height: 88vh;
  align-items: center;
  gap: 0;
}

.hero-text {
  padding: 80px 60px 80px 80px;
}

.hero-text h1 {
  font-size: 3.8rem;
  line-height: 1.05;
  margin-bottom: 24px;
  color: var(--text);
}

.hero-text p {
  font-size: 1.15rem;
  color: #475569;
  max-width: 480px;
  margin-bottom: 36px;
}

.hero-visual {
  background: linear-gradient(135deg, #0F766E, #6366F1);
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.hero-visual img {
  width: 82%;
  border-radius: 20px;
  box-shadow: 0 30px 70px rgba(15, 23, 42, 0.3);
  transform: rotate(-3deg);
}

/* Sticky Side Navigation for Blog & Content */
.sticky-layout {
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: 40px;
  padding-top: 40px;
}

@media (max-width: 900px) {
  .sticky-layout { grid-template-columns: 1fr; }
}

.sidebar {
  position: sticky;
  top: 90px;
  height: fit-content;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 24px;
}

.sidebar h4 {
  font-size: 0.95rem;
  margin-bottom: 16px;
  color: #64748B;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.sidebar ul {
  list-style: none;
}

.sidebar li {
  margin-bottom: 10px;
}

.sidebar a {
  color: #475569;
  display: block;
  padding: 8px 0;
  font-weight: 500;
}

.sidebar a:hover { color: var(--primary); }

/* Card Based Content */
.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  transition: transform 0.3s, box-shadow 0.3s;
  box-shadow: var(--shadow);
}

.card:hover {
  transform: translateY(-6px);
  box-shadow: 0 20px 40px rgba(15, 23, 42, 0.1);
}

.card h3 {
  font-size: 1.45rem;
  margin-bottom: 14px;
}

/* Masonry for Blog */
.masonry {
  columns: 3;
  column-gap: 26px;
}

@media (max-width: 1100px) { .masonry { columns: 2; } }
@media (max-width: 700px) { .masonry { columns: 1; } }

.masonry-item {
  break-inside: avoid;
  margin-bottom: 26px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
}

.masonry-item img {
  width: 100%;
  display: block;
}

/* Footer */
footer {
  background: #0F172A;
  color: #94A3B8;
  padding: 70px 0 40px;
  margin-top: 80px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 50px;
}

.footer-col h4 {
  color: white;
  margin-bottom: 18px;
  font-size: 1rem;
}

.footer-col a {
  color: #94A3B8;
  display: block;
  margin-bottom: 9px;
  font-size: 0.9rem;
}

.footer-col a:hover { color: #6366F1; }

.footer-bottom {
  margin-top: 50px;
  padding-top: 24px;
  border-top: 1px solid #334155;
  font-size: 0.85rem;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}