/* ============================================================
   BitSolutions Ltd — Global Stylesheet
   2026 Rebrand
   ============================================================ */

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

:root {
  --navy:       #0d1b2a;
  --navy-mid:   #162537;
  --navy-light: #1e3a56;
  --accent:     #1a7fe8;
  --accent-dim: #1462b5;
  --white:      #ffffff;
  --gray-50:    #f7f9fc;
  --gray-100:   #edf1f7;
  --gray-400:   #94a3b8;
  --gray-600:   #64748b;
  --text:       #1e293b;
  --text-light: #475569;

  --max-w: 1140px;
  --radius: 10px;
  --transition: 0.25s ease;
}

html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', 'Helvetica Neue', Arial, sans-serif;
  font-size: 16px;
  line-height: 1.7;
  color: var(--text);
  background: var(--white);
  -webkit-font-smoothing: antialiased;
}

img { display: block; max-width: 100%; }
a { text-decoration: none; color: inherit; }

/* ---------- Typography ---------- */
h1, h2, h3, h4 { line-height: 1.25; font-weight: 700; letter-spacing: -0.02em; }
h1 { font-size: clamp(2.2rem, 5vw, 3.6rem); }
h2 { font-size: clamp(1.6rem, 3.5vw, 2.4rem); }
h3 { font-size: 1.2rem; font-weight: 600; }
p  { color: var(--text-light); }

/* ---------- Layout Helpers ---------- */
.container {
  width: 100%;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 24px;
}

section { padding: 96px 0; }
section:nth-child(even) { background: var(--gray-50); }

.section-label {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 12px;
}

.section-header {
  max-width: 680px;
  margin-bottom: 56px;
}

.section-header h2 { color: var(--navy); margin-bottom: 16px; }
.section-header p  { font-size: 1.05rem; }

/* ---------- Navigation ---------- */
nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(13, 27, 42, 0.97);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(255,255,255,0.06);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.nav-logo {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  min-height: 34px;
  line-height: 1;
  color: var(--white);
}

.brand-logo {
  display: block;
  height: 32px;
  width: auto;
  max-width: 230px;
  object-fit: contain;
  flex-shrink: 0;
  opacity: 1;
  filter: none;
  mix-blend-mode: normal;
}

.brand-logo.is-hidden { display: none; }

.brand-fallback {
  display: none;
  font-size: 1.05rem;
  font-weight: 800;
  color: var(--white);
  letter-spacing: -0.03em;
  white-space: nowrap;
}

.brand-logo.is-hidden + .brand-fallback,
.nav-logo.no-image .brand-fallback {
  display: inline-block;
}

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

.nav-links a {
  font-size: 0.9rem;
  font-weight: 500;
  color: rgba(255,255,255,0.75);
  transition: color var(--transition);
}

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

.nav-cta {
  background: var(--accent);
  color: var(--white) !important;
  padding: 8px 20px;
  border-radius: 6px;
  font-weight: 600 !important;
  transition: background var(--transition) !important;
}

.nav-cta:hover { background: var(--accent-dim) !important; }

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  background: none;
  border: none;
  padding: 4px;
}

.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--white);
  border-radius: 2px;
  transition: var(--transition);
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: 8px;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
  border: 2px solid transparent;
  white-space: nowrap;
}

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

.btn-primary:hover {
  background: var(--accent-dim);
  transform: translateY(-1px);
  box-shadow: 0 8px 24px rgba(26,127,232,0.35);
}

.btn-outline {
  background: transparent;
  color: #ffffff;
  border-color: rgba(255,255,255,0.45);
}

.btn-outline:hover {
  border-color: var(--white);
  background: rgba(255,255,255,0.08);
}

.btn-outline-dark {
  background: transparent;
  color: var(--navy);
  border-color: var(--navy);
}

.btn-outline-dark:hover {
  background: var(--navy);
  color: var(--white);
}

/* ---------- Hero ---------- */
.hero {
  background: linear-gradient(180deg, #edf3fa 0%, #e8f0f8 100%);
  background-color: #edf3fa;
  padding: 120px 0 96px;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 65% 55% at 82% 45%, rgba(26,127,232,0.09) 0%, transparent 72%),
    radial-gradient(ellipse 34% 34% at 22% 82%, rgba(26,127,232,0.05) 0%, transparent 64%);
  pointer-events: none;
  z-index: 0;
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 760px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(26,127,232,0.08);
  border: 1px solid rgba(26,127,232,0.32);
  border-radius: 20px;
  padding: 6px 14px;
  font-size: 0.78rem;
  font-weight: 600;
  color: #1e3a56;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  margin-bottom: 28px;
}

.hero-badge::before {
  content: '';
  width: 7px; height: 7px;
  border-radius: 50%;
  background: #1a7fe8;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0.3; }
}

.hero h1 {
  color: #10233a;
  margin-bottom: 24px;
}

.hero h1 em {
  font-style: normal;
  color: var(--accent);
}

.hero-sub {
  font-size: 1.15rem;
  color: #334155;
  max-width: 640px;
  margin-bottom: 16px;
}

.hero-note {
  font-size: 0.88rem;
  color: #64748b;
  margin-bottom: 40px;
}

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

.hero-stats {
  display: flex;
  gap: 48px;
  margin-top: 72px;
  padding-top: 48px;
  border-top: 1px solid rgba(15,23,42,0.08);
  flex-wrap: wrap;
}

.stat-number {
  font-size: 2rem;
  font-weight: 800;
  color: #10233a;
  letter-spacing: -0.02em;
  display: block;
}

.stat-label {
  font-size: 0.82rem;
  color: #64748b;
  font-weight: 500;
}

.hero .btn-outline {
  color: #10233a;
  border-color: rgba(15,23,42,0.18);
  background: transparent;
}

.hero .btn-outline:hover {
  color: #10233a;
  border-color: rgba(15,23,42,0.3);
  background: rgba(15,23,42,0.04);
}

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

.card {
  background: var(--white);
  border: 1px solid var(--gray-100);
  border-radius: var(--radius);
  padding: 32px;
  transition: all var(--transition);
  position: relative;
}

section:nth-child(even) .card { background: var(--white); }

.card:hover {
  border-color: rgba(26,127,232,0.25);
  box-shadow: 0 12px 40px rgba(0,0,0,0.08);
  transform: translateY(-2px);
}

.card-icon {
  width: 44px; height: 44px;
  border-radius: 10px;
  background: rgba(26,127,232,0.08);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  font-size: 1.2rem;
}

.card h3 { color: var(--navy); margin-bottom: 10px; }
.card p  { font-size: 0.95rem; line-height: 1.65; }

.card-tag {
  display: inline-block;
  margin-top: 20px;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--accent);
  background: rgba(26,127,232,0.07);
  border-radius: 4px;
  padding: 3px 8px;
}

/* ---------- How We Work ---------- */
.checklist {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 16px;
}

.checklist li {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  background: var(--white);
  border: 1px solid var(--gray-100);
  border-radius: var(--radius);
  padding: 20px 24px;
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text);
}

.checklist li::before {
  content: '✓';
  flex-shrink: 0;
  width: 22px; height: 22px;
  border-radius: 50%;
  background: var(--accent);
  color: var(--white);
  font-size: 0.7rem;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-top: 1px;
}

/* ---------- Dark Band ---------- */
.dark-band {
  background: var(--navy);
  padding: 80px 0;
}

.dark-band .section-header h2 { color: var(--white); }
.dark-band .section-header p  { color: rgba(255,255,255,0.6); }

.pillars {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 2px;
}

.pillar {
  padding: 36px 28px;
  border-right: 1px solid rgba(255,255,255,0.07);
}

.pillar:last-child { border-right: none; }

.pillar-icon {
  font-size: 1.6rem;
  margin-bottom: 16px;
}

.pillar h4 {
  font-size: 0.92rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 8px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.pillar p {
  font-size: 0.85rem;
  color: rgba(255,255,255,0.5);
  line-height: 1.6;
}

/* ---------- Flow Diagram ---------- */
.flow {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0;
  flex-wrap: wrap;
  margin: 48px 0;
}

.flow-step {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  min-width: 120px;
  padding: 20px 16px;
}

.flow-step-icon {
  width: 52px; height: 52px;
  border-radius: 12px;
  background: rgba(26,127,232,0.1);
  border: 1px solid rgba(26,127,232,0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
}

.flow-step-label {
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--navy);
}

.flow-arrow {
  font-size: 1.2rem;
  color: var(--accent);
  padding: 0 8px;
  flex-shrink: 0;
}

/* ---------- Messaging Section ---------- */
.messaging-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}

.messaging-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.messaging-list li {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text);
}

.messaging-list li::before {
  content: '';
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--accent);
  flex-shrink: 0;
}

.messaging-callout {
  background: var(--navy);
  border-radius: 12px;
  padding: 36px;
  color: var(--white);
}

.messaging-callout p {
  color: rgba(255,255,255,0.65);
  font-size: 0.95rem;
  line-height: 1.7;
}

.messaging-callout h3 {
  color: var(--white);
  margin-bottom: 12px;
}

/* ---------- Innovation Section ---------- */
.innovation-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}

.innovation-signals {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.signal-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding: 20px;
  background: rgba(26,127,232,0.05);
  border: 1px solid rgba(26,127,232,0.12);
  border-radius: var(--radius);
}

.signal-num {
  width: 28px; height: 28px;
  border-radius: 50%;
  background: var(--accent);
  color: var(--white);
  font-size: 0.78rem;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  margin-top: 1px;
}

.signal-item h4 { font-size: 0.9rem; color: var(--navy); margin-bottom: 4px; }
.signal-item p  { font-size: 0.85rem; }

/* ---------- CTA Section ---------- */
.cta-section {
  background: var(--navy);
  padding: 96px 0;
  text-align: center;
}

.cta-section h2 { color: var(--white); margin-bottom: 16px; }
.cta-section p  {
  color: rgba(255,255,255,0.6);
  font-size: 1.05rem;
  max-width: 540px;
  margin: 0 auto 40px;
}

/* ---------- Page Header ---------- */
.page-header {
  background: var(--navy);
  padding: 80px 0 72px;
}

.page-header h1 { color: var(--white); margin-bottom: 16px; }
.page-header p  {
  color: rgba(255,255,255,0.62);
  font-size: 1.1rem;
  max-width: 600px;
}

/* ---------- About Specifics ---------- */
.about-lead {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: start;
  padding: 80px 0;
}

.about-lead-text h2 { color: var(--navy); margin-bottom: 24px; }
.about-lead-text p  { margin-bottom: 18px; }

.about-callout {
  background: var(--navy);
  border-radius: 12px;
  padding: 36px;
  position: sticky;
  top: 88px;
}

.about-callout h3 { color: var(--white); font-size: 1rem; margin-bottom: 20px; }

.about-fact {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.fact-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-bottom: 14px;
  border-bottom: 1px solid rgba(255,255,255,0.06);
}

.fact-row:last-child { border-bottom: none; padding-bottom: 0; }
.fact-key   { font-size: 0.78rem; color: rgba(255,255,255,0.4); text-transform: uppercase; letter-spacing: 0.08em; }
.fact-value { font-size: 0.88rem; font-weight: 600; color: var(--white); }

.values-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 20px;
  padding: 72px 0;
}

.value-card {
  padding: 28px;
  background: var(--white);
  border: 1px solid var(--gray-100);
  border-radius: var(--radius);
}

.value-card h3 { color: var(--navy); margin-bottom: 8px; font-size: 1rem; }
.value-card p  { font-size: 0.9rem; }

/* ---------- Services Specifics ---------- */
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 24px;
  padding: 20px 0;
}

.service-card {
  background: var(--white);
  border: 1px solid var(--gray-100);
  border-radius: var(--radius);
  padding: 36px 32px;
  transition: all var(--transition);
}

.service-card:hover {
  border-color: var(--accent);
  box-shadow: 0 8px 32px rgba(0,0,0,0.08);
  transform: translateY(-2px);
}

.service-card-icon {
  font-size: 1.8rem;
  margin-bottom: 20px;
}

.service-card h3 { color: var(--navy); margin-bottom: 12px; }
.service-card p  { font-size: 0.92rem; line-height: 1.7; margin-bottom: 20px; }

.service-details {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding-top: 20px;
  border-top: 1px solid var(--gray-100);
}

.service-details li {
  font-size: 0.85rem;
  color: var(--text-light);
  display: flex;
  align-items: center;
  gap: 8px;
}

.service-details li::before {
  content: '→';
  color: var(--accent);
  font-weight: 700;
}

/* ---------- Real-Time Page Specifics ---------- */
.rt-flow-section { background: var(--gray-50); padding: 80px 0; }

.use-cases {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 20px;
}

.use-case-card {
  background: var(--white);
  border: 1px solid var(--gray-100);
  border-radius: var(--radius);
  padding: 28px;
  transition: all var(--transition);
}

.use-case-card:hover {
  border-color: rgba(26,127,232,0.3);
  box-shadow: 0 8px 24px rgba(0,0,0,0.06);
}

.use-case-card h3 { color: var(--navy); margin-bottom: 10px; font-size: 1rem; }
.use-case-card p  { font-size: 0.9rem; }

/* ---------- Footer ---------- */
footer {
  background: var(--navy);
  border-top: 1px solid rgba(255,255,255,0.06);
  padding: 64px 0 40px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 56px;
}

.footer-brand .nav-logo { margin-bottom: 14px; }
.footer-brand .brand-logo { height: 36px; max-width: 250px; }
.footer-brand p {
  font-size: 0.85rem;
  color: rgba(255,255,255,0.4);
  line-height: 1.7;
  max-width: 240px;
}

.footer-col h4 {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: rgba(255,255,255,0.4);
  margin-bottom: 16px;
}

.footer-col ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-col ul li a {
  font-size: 0.88rem;
  color: rgba(255,255,255,0.6);
  transition: color var(--transition);
}

.footer-col ul li a:hover { color: var(--white); }

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.06);
  padding-top: 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}

.footer-bottom p {
  font-size: 0.8rem;
  color: rgba(255,255,255,0.3);
}

/* ---------- Animations ---------- */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.55s ease, transform 0.55s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: none;
}

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
  .messaging-grid,
  .innovation-inner,
  .about-lead { grid-template-columns: 1fr; gap: 36px; }

  .about-callout { position: static; }

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

  .pillars { grid-template-columns: 1fr 1fr; }
  .pillar  { border-right: none; border-bottom: 1px solid rgba(255,255,255,0.07); }
  .pillar:last-child { border-bottom: none; }
}

@media (max-width: 640px) {
  section { padding: 64px 0; }
  .hero   { padding: 80px 0 64px; }

  .brand-logo { height: 28px; max-width: 190px; }
  .footer-brand .brand-logo { height: 32px; }

  .nav-links { display: none; flex-direction: column; gap: 0; }
  .nav-links.open {
    display: flex;
    position: absolute;
    top: 64px; left: 0; right: 0;
    background: var(--navy);
    border-bottom: 1px solid rgba(255,255,255,0.08);
    padding: 16px 24px 24px;
  }

  .nav-links.open li { border-bottom: 1px solid rgba(255,255,255,0.05); }
  .nav-links.open li a { display: block; padding: 12px 0; font-size: 1rem; }
  .nav-links.open .nav-cta { margin-top: 12px; width: 100%; justify-content: center; }

  .nav-toggle { display: flex; }

  .hero-stats { flex-direction: column; gap: 24px; }
  .flow { flex-direction: column; }
  .flow-arrow { transform: rotate(90deg); }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .pillars { grid-template-columns: 1fr; }
}