/* =============================================
   CB Data Solutions — Shared Stylesheet
   ============================================= */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

/* --- Reset & Base --- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --primary:       #1a56db;
  --primary-dark:  #1040b0;
  --primary-light: #e8f0fe;
  --accent:        #06b6d4;
  --dark:          #111827;
  --mid:           #374151;
  --muted:         #6b7280;
  --light:         #f9fafb;
  --white:         #ffffff;
  --border:        #e5e7eb;
  --shadow-sm:     0 1px 3px rgba(0,0,0,0.08);
  --shadow-md:     0 4px 16px rgba(0,0,0,0.10);
  --shadow-lg:     0 8px 32px rgba(0,0,0,0.12);
  --radius:        10px;
  --radius-lg:     16px;
  --transition:    0.2s ease;
}

html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', Arial, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  color: var(--mid);
  background: var(--light);
}

a { color: var(--primary); text-decoration: none; }
a:hover { color: var(--primary-dark); }

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

/* --- Navbar --- */
.navbar {
  background: var(--white);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: var(--shadow-sm);
}

.navbar-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.navbar-logo {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--dark);
  display: flex;
  align-items: center;
  gap: 8px;
}

.navbar-logo span {
  color: var(--primary);
}

.navbar-links {
  display: flex;
  gap: 4px;
}

.navbar-links a {
  color: var(--mid);
  font-weight: 500;
  font-size: 0.95rem;
  padding: 8px 16px;
  border-radius: 6px;
  transition: background var(--transition), color var(--transition);
}

.navbar-links a:hover,
.navbar-links a.active {
  background: var(--primary-light);
  color: var(--primary);
}

/* --- Buttons --- */
.btn {
  display: inline-block;
  padding: 12px 28px;
  border-radius: 8px;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
  text-align: center;
}

.btn-primary {
  background: var(--primary);
  color: var(--white);
}
.btn-primary:hover {
  background: var(--primary-dark);
  color: var(--white);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(26,86,219,0.3);
}

.btn-outline {
  background: transparent;
  color: var(--primary);
  border: 2px solid var(--primary);
}
.btn-outline:hover {
  background: var(--primary);
  color: var(--white);
  transform: translateY(-1px);
}

.btn-whatsapp {
  background: #25d366;
  color: var(--white);
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.btn-whatsapp:hover {
  background: #1dab55;
  color: var(--white);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(37,211,102,0.35);
}

/* --- Section layout --- */
.section {
  padding: 80px 24px;
}

.section-inner {
  max-width: 1100px;
  margin: 0 auto;
}

.section-label {
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--primary);
  margin-bottom: 12px;
}

.section-title {
  font-size: 2rem;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 16px;
  line-height: 1.25;
}

.section-subtitle {
  font-size: 1.05rem;
  color: var(--muted);
  max-width: 560px;
  margin-bottom: 48px;
}

/* --- Hero --- */
.hero {
  background: linear-gradient(135deg, #0f172a 0%, #1a3a6e 60%, #1a56db 100%);
  color: var(--white);
  padding: 100px 24px 80px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
  pointer-events: none;
}

.hero-inner {
  max-width: 780px;
  margin: 0 auto;
  position: relative;
  z-index: 1;
}

.hero-tag {
  display: inline-block;
  background: rgba(255,255,255,0.12);
  border: 1px solid rgba(255,255,255,0.2);
  color: #93c5fd;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 5px 14px;
  border-radius: 20px;
  margin-bottom: 24px;
}

.hero h1 {
  font-size: 3rem;
  font-weight: 700;
  line-height: 1.15;
  margin-bottom: 20px;
  color: var(--white);
}

.hero h1 span {
  color: #60a5fa;
}

.hero p {
  font-size: 1.15rem;
  color: rgba(255,255,255,0.75);
  margin-bottom: 36px;
  max-width: 560px;
  margin-left: auto;
  margin-right: auto;
}

.hero-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

/* --- Cards --- */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
}

.card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px;
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition), transform var(--transition);
}

.card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-3px);
}

.card-icon {
  width: 48px;
  height: 48px;
  background: var(--primary-light);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: 20px;
}

.card h3 {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--dark);
  margin-bottom: 10px;
}

.card p {
  font-size: 0.95rem;
  color: var(--muted);
  line-height: 1.65;
}

/* --- Project cards --- */
.project-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition), transform var(--transition);
}

.project-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-3px);
}

.project-card-image {
  height: 180px;
  background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.5rem;
}

.project-card-body {
  padding: 24px;
}

.project-card-tag {
  display: inline-block;
  background: var(--primary-light);
  color: var(--primary);
  font-size: 0.75rem;
  font-weight: 600;
  padding: 3px 10px;
  border-radius: 20px;
  margin-bottom: 12px;
}

.project-card h3 {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--dark);
  margin-bottom: 8px;
}

.project-card p {
  font-size: 0.9rem;
  color: var(--muted);
}

/* --- CTA Banner --- */
.cta-banner {
  background: linear-gradient(135deg, var(--primary) 0%, #0e3fa8 100%);
  color: var(--white);
  padding: 64px 24px;
  text-align: center;
}

.cta-banner h2 {
  font-size: 1.9rem;
  font-weight: 700;
  margin-bottom: 14px;
  color: var(--white);
}

.cta-banner p {
  font-size: 1rem;
  color: rgba(255,255,255,0.8);
  margin-bottom: 32px;
  max-width: 480px;
  margin-left: auto;
  margin-right: auto;
}

.btn-white {
  background: var(--white);
  color: var(--primary);
  font-weight: 700;
}
.btn-white:hover {
  background: var(--primary-light);
  color: var(--primary-dark);
  transform: translateY(-1px);
}

/* --- Contact page --- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: 40px;
  align-items: start;
}

@media (max-width: 720px) {
  .contact-grid { grid-template-columns: 1fr; }
}

.contact-info h2 {
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 12px;
}

.contact-info p {
  color: var(--muted);
  margin-bottom: 28px;
}

.contact-item {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
  font-size: 0.95rem;
  color: var(--mid);
}

.contact-item-icon {
  width: 40px;
  height: 40px;
  background: var(--primary-light);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  flex-shrink: 0;
}

/* --- Form --- */
.form-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 36px;
  box-shadow: var(--shadow-sm);
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--dark);
  margin-bottom: 6px;
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 11px 14px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 0.95rem;
  font-family: inherit;
  color: var(--dark);
  background: var(--white);
  transition: border-color var(--transition), box-shadow var(--transition);
  outline: none;
}

.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(26,86,219,0.12);
}

.form-group textarea { resize: vertical; min-height: 130px; }

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

@media (max-width: 500px) {
  .form-row { grid-template-columns: 1fr; }
}

.form-divider {
  border: none;
  border-top: 1px solid var(--border);
  margin: 24px 0;
}

/* --- Page header (inner pages) --- */
.page-header {
  background: linear-gradient(135deg, #0f172a 0%, #1a3a6e 100%);
  color: var(--white);
  padding: 64px 24px 56px;
  text-align: center;
}

.page-header h1 {
  font-size: 2.2rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 12px;
}

.page-header p {
  font-size: 1rem;
  color: rgba(255,255,255,0.72);
  max-width: 500px;
  margin: 0 auto;
}

/* --- Tech stack badges --- */
.badge-row {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 16px;
}

.badge {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 600;
  padding: 3px 9px;
  border-radius: 4px;
  letter-spacing: 0.02em;
}

.badge-tech {
  background: #f1f5f9;
  color: #475569;
  border: 1px solid #e2e8f0;
}

.badge-industry {
  background: var(--primary-light);
  color: var(--primary);
  border: 1px solid #bfdbfe;
}

/* --- Outcome stats --- */
.outcome-row {
  display: flex;
  gap: 20px;
  margin: 18px 0 0;
  padding-top: 18px;
  border-top: 1px solid var(--border);
  flex-wrap: wrap;
}

.outcome-stat {
  display: flex;
  flex-direction: column;
}

.outcome-stat .stat-number {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--primary);
  line-height: 1.1;
}

.outcome-stat .stat-label {
  font-size: 0.72rem;
  color: var(--muted);
  margin-top: 2px;
  line-height: 1.3;
}

/* --- Full project card (expanded layout) --- */
.project-card-full {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition), transform var(--transition);
  display: flex;
  flex-direction: column;
}

.project-card-full:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-3px);
}

.project-card-full .card-header {
  padding: 24px 24px 0;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
}

.project-card-full .card-icon-lg {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
  flex-shrink: 0;
}

.project-card-full .card-body {
  padding: 16px 24px 24px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.project-card-full h3 {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 6px;
  line-height: 1.3;
}

.project-card-full .problem-label {
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.09em;
  color: var(--muted);
  margin: 14px 0 4px;
}

.project-card-full .problem-text {
  font-size: 0.88rem;
  color: var(--mid);
  line-height: 1.6;
}

.project-card-full .solution-text {
  font-size: 0.88rem;
  color: var(--mid);
  line-height: 1.6;
}

/* --- Filter bar --- */
.filter-bar {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 40px;
}

.filter-btn {
  padding: 7px 18px;
  border-radius: 20px;
  font-size: 0.85rem;
  font-weight: 500;
  border: 1px solid var(--border);
  background: var(--white);
  color: var(--mid);
  cursor: pointer;
  transition: all var(--transition);
}

.filter-btn:hover {
  border-color: var(--primary);
  color: var(--primary);
}

.filter-btn.active {
  background: var(--primary);
  border-color: var(--primary);
  color: var(--white);
}

/* --- Footer --- */
footer {
  background: var(--dark);
  color: rgba(255,255,255,0.6);
  text-align: center;
  padding: 28px 24px;
  font-size: 0.875rem;
}

footer a {
  color: rgba(255,255,255,0.6);
}

footer a:hover {
  color: var(--white);
}

footer strong {
  color: var(--white);
}

/* --- Responsive --- */
@media (max-width: 768px) {
  .hero h1 { font-size: 2.1rem; }
  .section-title { font-size: 1.6rem; }
  .section { padding: 56px 20px; }
  .navbar-links a { padding: 8px 10px; font-size: 0.9rem; }
}

@media (max-width: 480px) {
  .hero h1 { font-size: 1.75rem; }
  .navbar-logo { font-size: 1rem; }
}