/* ==========================================
   CISSELL TECHNOLOGIES - DESIGN SYSTEM
   Palette: Obsidian, Electric Cyan, Steel Slate
   ========================================== */

:root {
  --bg-obsidian: #1A1D24;
  --card-slate: #2C3540;
  --accent-cyan: #00D2FF;
  --accent-cyan-hover: #33DCFF;
  --text-white: #FFFFFF;
  --text-slate: #A0AEC0;
  --border-slate: rgba(255, 255, 255, 0.08);
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --container-max: 1200px;
}

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

body {
  background-color: var(--bg-obsidian);
  color: var(--text-white);
  font-family: var(--font-family);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* LAYOUT & CONTAINERS */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 24px;
}

section {
  padding: 80px 0;
}

/* NAVIGATION & BRANDING RESET */
.navbar {
  position: sticky;
  top: 0;
  background-color: rgba(26, 29, 36, 0.9);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border-slate);
  z-index: 1000;
  padding: 16px 0;
}

.nav-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

a.brand-link,
a.brand-link:visited,
a.brand-link:hover,
a.brand-link:active {
  display: flex !important;
  align-items: center !important;
  gap: 12px !important;
  text-decoration: none !important;
  color: inherit !important;
  outline: none;
}

.brand-logo-img {
  height: 38px !important;
  max-height: 38px !important;
  width: auto !important;
  max-width: 100% !important;
  object-fit: contain;
  display: block;
}

.brand-text {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif !important;
  font-weight: 800 !important;
  font-size: 1.25rem !important;
  letter-spacing: 1px !important;
  color: #FFFFFF !important;
  white-space: nowrap !important;
  text-decoration: none !important;
}

.brand-text span {
  color: #00D2FF !important;
}

.nav-links {
  display: flex;
  gap: 32px;
  list-style: none;
  align-items: center;
}

.nav-links a {
  color: var(--text-slate);
  text-decoration: none;
  font-size: 0.95rem;
  transition: color 0.2s ease;
}

.nav-links a:hover {
  color: var(--text-white);
}

/* BUTTONS */
.btn {
  display: inline-block;
  padding: 12px 24px;
  border-radius: 6px;
  font-weight: 600;
  text-decoration: none;
  transition: all 0.2s ease;
  cursor: pointer;
  border: none;
}

.btn-primary {
  background-color: var(--accent-cyan);
  color: var(--bg-obsidian) !important;
}

.btn-primary:hover {
  background-color: var(--accent-cyan-hover);
  box-shadow: 0 0 15px rgba(0, 210, 255, 0.3);
}

.btn-secondary {
  background-color: transparent;
  color: var(--text-white) !important;
  border: 1px solid var(--border-slate);
}

.btn-secondary:hover {
  border-color: var(--text-slate);
  background-color: rgba(255, 255, 255, 0.03);
}

/* HERO SECTION */
.hero {
  padding: 120px 0 80px 0;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
  max-width: 920px;
}

.tagline-badge {
  display: inline-block;
  color: var(--accent-cyan);
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  margin-bottom: 12px;
}

.hero h1 {
  font-size: 3rem;
  line-height: 1.15;
  font-weight: 800;
  margin-bottom: 24px;
}

.hero p {
  font-size: 1.2rem;
  color: var(--text-slate);
  margin-bottom: 32px;
  max-width: 780px;
}

.cta-group {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

/* CARDS & GRIDS */
.section-header {
  margin-bottom: 48px;
}

.section-header h2 {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 12px;
}

.section-header p {
  color: var(--text-slate);
  font-size: 1.05rem;
  max-width: 680px;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 24px;
}

.card {
  background-color: var(--card-slate);
  border: 1px solid var(--border-slate);
  border-radius: 8px;
  padding: 32px;
  transition: transform 0.2s ease, border-color 0.2s ease;
}

.card:hover {
  transform: translateY(-4px);
  border-color: rgba(0, 210, 255, 0.3);
}

.card h3 {
  font-size: 1.25rem;
  margin-bottom: 12px;
}

.card p {
  color: var(--text-slate);
  font-size: 0.95rem;
}

/* FOOTER */
footer {
  border-top: 1px solid var(--border-slate);
  padding: 40px 0;
  margin-top: 80px;
  color: var(--text-slate);
  font-size: 0.9rem;
}

.footer-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 20px;
}

/* RESPONSIVE */
@media (max-width: 768px) {
  .hero h1 { font-size: 2.2rem; }
  .nav-links { display: none; }
}