/* ============================================================
   BUSINESS DIAGNOSTIC PLATFORM — Landing Page Styles
   ============================================================ */

/* ---- Navbar --------------------------------------------- */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-overlay);
  height: 64px;
  border-bottom: 1px solid transparent;
  transition: background var(--transition-slow), border-color var(--transition-slow),
              backdrop-filter var(--transition-slow);
}

.navbar.scrolled {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border-color: var(--glass-border);
  box-shadow: var(--shadow-sm);
}

.navbar .container {
  height: 100%;
}

/* ---- Brand ---------------------------------------------- */
.brand {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  text-decoration: none;
  flex-shrink: 0;
}

.brand-icon {
  flex-shrink: 0;
  transition: transform var(--transition-spring);
}

.brand:hover .brand-icon {
  transform: scale(1.08) rotate(-4deg);
}

.brand-name {
  font-family: var(--font-display);
  font-size: var(--text-base);
  font-weight: 700;
  color: var(--color-text-primary);
  letter-spacing: -0.01em;
}

/* ---- Hero ----------------------------------------------- */
.hero-section {
  position: relative;
  z-index: 1;
  padding-top: calc(64px + var(--space-20));
  padding-bottom: var(--space-20);
  overflow: hidden;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-16);
  align-items: center;
}

.hero-badge {
  margin-bottom: var(--space-5);
}

.hero-headline {
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 800;
  line-height: 1.08;
  letter-spacing: -0.04em;
  margin-bottom: var(--space-6);
}

.hero-sub {
  font-size: var(--text-lg);
  color: var(--color-text-secondary);
  line-height: 1.7;
  max-width: 520px;
  margin-bottom: var(--space-8);
}

.hero-ctas {
  flex-wrap: wrap;
  margin-bottom: var(--space-5);
}

.hero-note {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  letter-spacing: 0.02em;
}

/* ---- Dashboard Preview ---------------------------------- */
.hero-visual {
  position: relative;
}

.dashboard-preview {
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-glow), var(--shadow-lg);
  transition: box-shadow var(--transition-slow);
}

.dashboard-preview:hover {
  box-shadow: 0 0 60px rgba(99,102,241,0.3), var(--shadow-lg);
}

.preview-topbar {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  padding: var(--space-3) var(--space-4);
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
}

.preview-dots {
  display: flex;
  gap: 5px;
}

.preview-dots span {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--color-border);
}

.preview-dots span:nth-child(1) { background: #EF4444; }
.preview-dots span:nth-child(2) { background: #F59E0B; }
.preview-dots span:nth-child(3) { background: #22C55E; }

.preview-title {
  font-size: 11px;
  color: var(--color-text-muted);
  font-family: var(--font-body);
}

.preview-kpi-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.preview-kpi {
  background: var(--color-bg-elevated);
  padding: var(--space-4);
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.preview-kpi-label {
  font-size: 9px;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.preview-kpi-value {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 800;
  line-height: 1;
  letter-spacing: -0.03em;
}

.preview-kpi-delta {
  font-size: 9px;
  font-weight: 600;
}

.preview-kpi-delta.up   { color: var(--color-success); }
.preview-kpi-delta.down { color: var(--color-error); }

.preview-radar {
  padding: var(--space-4);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-3);
}

.preview-radar svg {
  width: 100%;
  max-width: 220px;
  height: auto;
}

.preview-legend {
  display: flex;
  gap: var(--space-4);
  justify-content: center;
}

.legend-item {
  display: flex;
  align-items: center;
  gap: 5px;
  font-size: 9px;
  color: var(--color-text-muted);
}

.legend-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
}

.preview-foda {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1px;
  background: var(--color-border);
  border-top: 1px solid var(--color-border);
}

.foda-cell {
  padding: var(--space-3) var(--space-4);
  font-size: 10px;
  display: flex;
  gap: var(--space-2);
  align-items: flex-start;
  background: var(--color-bg-elevated);
  color: var(--color-text-secondary);
  line-height: 1.4;
}

.foda-letter {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: var(--text-sm);
  flex-shrink: 0;
  line-height: 1;
  margin-top: 1px;
}

.foda-f .foda-letter { color: var(--color-success); }
.foda-o .foda-letter { color: var(--color-primary); }
.foda-d .foda-letter { color: var(--color-error); }
.foda-a .foda-letter { color: var(--color-warning); }

/* ---- Stats Bar ------------------------------------------ */
.stats-bar {
  position: relative;
  z-index: 1;
  padding-block: var(--space-12);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
  background: linear-gradient(180deg, transparent 0%, rgba(99,102,241,0.03) 100%);
}

.stats-grid {
  display: grid;
  grid-template-columns: 1fr auto 1fr auto 1fr auto 1fr;
  align-items: center;
  gap: var(--space-6);
}

.stat-item {
  text-align: center;
}

.stat-sep {
  width: 1px;
  height: 48px;
  background: var(--color-border);
}

/* ---- Sections ------------------------------------------- */
.features-section,
.how-section,
.register-section {
  position: relative;
  z-index: 1;
  padding-block: var(--space-24);
}

.section-header {
  margin-bottom: var(--space-16);
}

.section-title {
  font-size: clamp(1.875rem, 4vw, 2.5rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  margin-bottom: var(--space-4);
}

.section-subtitle {
  font-size: var(--text-lg);
  color: var(--color-text-secondary);
  max-width: 560px;
  margin-inline: auto;
  line-height: 1.65;
}

/* ---- Features Grid -------------------------------------- */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
}

/* ---- How It Works --------------------------------------- */
.how-section {
  background: linear-gradient(180deg, transparent, rgba(99,102,241,0.03), transparent);
}

.steps-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-8);
  position: relative;
  align-items: start;
}

.step-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: var(--space-5);
  position: relative;
}

.step-connector {
  position: absolute;
  top: 24px;
  left: calc(50% + 32px);
  right: calc(-50% + 32px);
  height: 1px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-border));
}

.step-item:last-child .step-connector { display: none; }

.step-content {
  max-width: 280px;
}

.step-title {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 700;
  margin-bottom: var(--space-3);
}

.step-desc {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  line-height: 1.65;
}

/* ---- Register Section ----------------------------------- */
.register-section {
  border-top: 1px solid var(--color-border);
}

.register-wrapper {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-16);
  align-items: start;
}

/* ---- Pitch ---------------------------------------------- */
.pitch-title {
  font-size: clamp(1.875rem, 3vw, 2.5rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  margin-bottom: var(--space-3);
}

.pitch-sub {
  font-size: var(--text-lg);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-8);
  line-height: 1.6;
}

.pitch-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.pitch-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: var(--text-base);
  color: var(--color-text-primary);
}

.pitch-check {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--color-success-bg);
  color: var(--color-success);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  border: 1px solid rgba(34,211,238,0.2);
}

/* ---- Form ---------------------------------------------- */
.register-form-wrap {
  padding: var(--space-8);
  position: sticky;
  top: 80px;
}

.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-5);
}

.form-grid .input-group:last-of-type {
  grid-column: span 2;
}

.form-terms {
  text-align: center;
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  margin-top: var(--space-4);
  line-height: 1.7;
}

.form-terms .form-link,
.form-login-redirect .form-link {
  color: var(--color-primary);
  transition: color var(--transition-fast);
}

.form-terms .form-link:hover,
.form-login-redirect .form-link:hover {
  color: var(--color-info);
}

.form-login-redirect {
  text-align: center;
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  margin-top: var(--space-4);
  padding-top: var(--space-4);
  border-top: 1px solid var(--color-border);
}

/* ---- Footer -------------------------------------------- */
.site-footer {
  position: relative;
  z-index: 1;
  border-top: 1px solid var(--color-border);
  padding-top: var(--space-16);
  padding-bottom: var(--space-8);
}

.footer-top {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: var(--space-16);
  margin-bottom: var(--space-12);
  padding-bottom: var(--space-12);
  border-bottom: 1px solid var(--color-border);
}

.footer-brand {
  max-width: 320px;
}

.footer-brand .brand {
  margin-bottom: var(--space-4);
}

.footer-tagline {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  line-height: 1.6;
}

.footer-nav {
  display: flex;
  gap: var(--space-12);
}

.footer-col {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.footer-col-title {
  font-family: var(--font-display);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text-primary);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-size: 11px;
}

.footer-col ul {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.footer-col a {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  transition: color var(--transition-fast);
}

.footer-col a:hover {
  color: var(--color-text-primary);
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.footer-copy {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
}

/* ---- Light Mode Overrides ------------------------------ */
[data-theme="light"] .hero-section {
  background: linear-gradient(180deg, rgba(99,102,241,0.03) 0%, transparent 100%);
}

[data-theme="light"] .dashboard-preview {
  box-shadow: var(--shadow-lg);
}

[data-theme="light"] .mesh-blob {
  opacity: 0.06;
}

/* ---- Responsive ---------------------------------------- */
@media (max-width: 1024px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: var(--space-12);
  }

  .hero-visual {
    max-width: 580px;
    margin-inline: auto;
  }

  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .register-wrapper {
    grid-template-columns: 1fr;
    gap: var(--space-12);
  }

  .register-form-wrap {
    position: static;
  }

  .footer-top {
    grid-template-columns: 1fr;
    gap: var(--space-8);
  }
}

@media (max-width: 768px) {
  .hero-section {
    padding-top: calc(64px + var(--space-12));
    padding-bottom: var(--space-12);
  }

  .features-grid,
  .steps-grid {
    grid-template-columns: 1fr;
  }

  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .stat-sep { display: none; }

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

  .form-grid .input-group:last-of-type {
    grid-column: span 1;
  }

  .steps-grid { gap: var(--space-10); }
  .step-connector { display: none; }
  .step-item { align-items: flex-start; text-align: left; flex-direction: row; }

  .footer-nav {
    flex-wrap: wrap;
    gap: var(--space-8);
  }

  .footer-bottom {
    flex-direction: column;
    gap: var(--space-4);
    text-align: center;
  }

  .nav-controls .btn-secondary { display: none; }
}