/* ExecutionSoft: Professional Software Engineering Site */
:root {
  --primary: #0b74de;
  --secondary: #0055a4;
  --accent: #00d4ff;
  --dark: #0a1428;
  --light: #f8f9fa;
  --muted: #6c757d;
  --success: #28a745;
  --danger: #dc3545;
  --border: #dee2e6;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  margin: 0;
  color: #1a1a1a;
  background: #ffffff;
  line-height: 1.6;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ===== HEADER ===== */
.site-header {
  background: #ffffff;
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 2px 4px rgba(0,0,0,0.04);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 24px;
}

.brand {
  margin: 0;
  font-size: 1.375rem;
  font-weight: 700;
  color: var(--dark);
  letter-spacing: -0.5px;
}

.nav {
  display: flex;
  align-items: center;
  gap: 32px;
  margin: 0;
}

.nav a {
  color: #555;
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 500;
  transition: color 0.2s ease;
}

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

.nav a.cta {
  background: var(--primary);
  color: #fff;
  padding: 10px 20px;
  border-radius: 6px;
  transition: background 0.2s ease;
}

.nav a.cta:hover {
  background: var(--secondary);
}

/* ===== HERO SECTION ===== */
.hero {
  padding: 80px 0;
  background: linear-gradient(135deg, #f8f9fa 0%, #e3f2fd 100%);
  border-bottom: 1px solid var(--border);
}

.hero .container {
  text-align: center;
}

.hero h2 {
  margin: 0 0 16px 0;
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--dark);
  line-height: 1.2;
  letter-spacing: -1px;
}

.hero p {
  font-size: 1.125rem;
  color: #555;
  margin: 0 0 32px 0;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.btn {
  display: inline-block;
  padding: 12px 28px;
  border-radius: 6px;
  text-decoration: none;
  font-weight: 600;
  font-size: 1rem;
  transition: all 0.3s ease;
  border: none;
  cursor: pointer;
  text-align: center;
}

.btn-primary {
  background: var(--primary);
  color: #fff;
}

.btn-primary:hover {
  background: var(--secondary);
  transform: translateY(-2px);
  box-shadow: 0 8px 16px rgba(11, 116, 222, 0.3);
}

/* ===== IMPACT SECTION ===== */
.impact-section {
  padding: 80px 0;
  background: #ffffff;
}

.impact-section h3 {
  font-size: 2rem;
  font-weight: 700;
  color: var(--dark);
  text-align: center;
  margin: 0 0 8px 0;
}

.impact-section .lead {
  font-size: 1.25rem;
  color: #555;
  text-align: center;
  margin: 0 0 48px 0;
  font-weight: 500;
}

.impact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 32px;
}

.impact-card {
  background: #f8f9fa;
  padding: 32px 24px;
  border-radius: 12px;
  border: 1px solid var(--border);
  transition: all 0.3s ease;
  text-align: center;
}

.impact-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 12px 32px rgba(11, 116, 222, 0.12);
  border-color: var(--primary);
}

.impact-card .icon {
  font-size: 3rem;
  margin-bottom: 16px;
}

.impact-card h4 {
  font-size: 1.25rem;
  color: var(--dark);
  margin: 16px 0 12px 0;
  font-weight: 700;
}

.impact-card p {
  color: #666;
  margin: 0;
  font-size: 0.95rem;
  line-height: 1.6;
}

/* ===== SERVICES SECTION ===== */
.services-section {
  padding: 80px 0;
  background: #f8f9fa;
}

.services-section h3 {
  font-size: 2rem;
  font-weight: 700;
  color: var(--dark);
  text-align: center;
  margin: 0 0 8px 0;
}

.services-section .lead {
  font-size: 1.125rem;
  color: #555;
  text-align: center;
  margin: 0 0 48px 0;
  font-weight: 500;
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: 28px;
}

.service-card {
  background: #ffffff;
  padding: 32px;
  border-radius: 12px;
  border: 1px solid var(--border);
  transition: all 0.3s ease;
}

.service-card:hover {
  border-color: var(--primary);
  box-shadow: 0 16px 40px rgba(11, 116, 222, 0.15);
  transform: translateY(-4px);
}

.service-card h4 {
  font-size: 1.25rem;
  color: var(--primary);
  margin: 0 0 12px 0;
  font-weight: 700;
}

.service-card p {
  color: #555;
  margin: 0 0 20px 0;
  font-size: 0.95rem;
}

.service-card ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.service-card li {
  color: #666;
  font-size: 0.9rem;
  padding-left: 24px;
  position: relative;
}

.service-card li:before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--success);
  font-weight: bold;
  font-size: 1.1rem;
}

/* ===== VALUE SECTION ===== */
.value-section {
  padding: 80px 0;
  background: #ffffff;
}

.value-section h3 {
  font-size: 2rem;
  font-weight: 700;
  color: var(--dark);
  text-align: center;
  margin: 0 0 48px 0;
}

.value-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(380px, 1fr));
  gap: 32px;
}

.value-item {
  padding: 32px;
  background: linear-gradient(135deg, #f8f9fa 0%, #e3f2fd 100%);
  border-radius: 12px;
  border-left: 4px solid var(--primary);
}

.value-item h4 {
  font-size: 1.25rem;
  color: var(--dark);
  margin: 0 0 12px 0;
  font-weight: 700;
}

.value-item p {
  color: #555;
  margin: 0;
  font-size: 0.95rem;
  line-height: 1.7;
}

/* ===== REQUEST SECTION ===== */
.request-section {
  padding: 80px 0;
  background: linear-gradient(135deg, #e3f2fd 0%, #f8f9fa 100%);
}

.request-section h3 {
  font-size: 2rem;
  font-weight: 700;
  color: var(--dark);
  text-align: center;
  margin: 0 0 8px 0;
}

.request-section .lead {
  font-size: 1.125rem;
  color: #555;
  text-align: center;
  margin: 0 0 40px 0;
  font-weight: 500;
}

#requirements-form {
  background: #ffffff;
  padding: 40px;
  border-radius: 12px;
  border: 1px solid var(--border);
  max-width: 700px;
  margin: 0 auto;
  box-shadow: 0 8px 24px rgba(0,0,0,0.08);
}

.form-row {
  margin-bottom: 24px;
}

.form-row label {
  display: block;
  font-weight: 600;
  color: var(--dark);
  margin-bottom: 8px;
  font-size: 0.95rem;
}

.form-row input[type="text"],
.form-row input[type="email"],
.form-row textarea {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 1rem;
  font-family: inherit;
  transition: border-color 0.2s ease;
}

.form-row input[type="text"]:focus,
.form-row input[type="email"]:focus,
.form-row textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(11, 116, 222, 0.1);
}

.form-row fieldset {
  border: 0;
  padding: 0;
  margin: 0;
}

.form-row legend {
  font-weight: 600;
  color: var(--dark);
  margin-bottom: 12px;
  font-size: 0.95rem;
  display: block;
}

.form-row fieldset label {
  display: inline-block;
  margin-right: 20px;
  margin-bottom: 8px;
  font-weight: 400;
}

.form-row input[type="checkbox"] {
  margin-right: 6px;
  cursor: pointer;
}

.form-row.actions {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 0;
}

.form-row.actions .btn {
  margin: 0;
}

#form-status {
  font-size: 0.95rem;
  color: var(--muted);
}

#form-status.success {
  color: var(--success);
}

#form-status.error {
  color: var(--danger);
}

/* ===== CONTACT SECTION ===== */
.contact-section {
  padding: 60px 0;
  background: var(--dark);
  color: #ffffff;
  text-align: center;
}

.contact-section h3 {
  font-size: 1.75rem;
  font-weight: 700;
  margin: 0 0 12px 0;
}

.contact-section > .container > p {
  font-size: 1.1rem;
  margin: 0 0 32px 0;
  opacity: 0.9;
}

.contact-info {
  display: flex;
  gap: 48px;
  justify-content: center;
  flex-wrap: wrap;
}

.contact-info div {
  font-size: 1rem;
}

.contact-info strong {
  display: block;
  margin-bottom: 4px;
  opacity: 0.8;
}

/* ===== FOOTER ===== */
.site-footer {
  padding: 24px 0;
  text-align: center;
  color: #666;
  font-size: 0.9rem;
  border-top: 1px solid var(--border);
  background: #ffffff;
}

.site-footer p {
  margin: 0;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
  .site-header .container {
    flex-direction: column;
    align-items: flex-start;
    gap: 16px;
  }

  .nav {
    gap: 16px;
    width: 100%;
    flex-wrap: wrap;
  }

  .hero h2 {
    font-size: 1.75rem;
  }

  .hero p {
    font-size: 1rem;
  }

  .impact-grid,
  .services-grid {
    grid-template-columns: 1fr;
  }

  .value-content {
    grid-template-columns: 1fr;
  }

  .impact-section,
  .services-section,
  .value-section,
  .request-section {
    padding: 48px 0;
  }

  #requirements-form {
    padding: 24px;
  }

  .contact-info {
    flex-direction: column;
    gap: 24px;
  }

  .nav a {
    font-size: 0.85rem;
  }

  .impact-section h3,
  .services-section h3,
  .value-section h3,
  .request-section h3 {
    font-size: 1.5rem;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 16px;
  }

  .site-header .container {
    padding: 12px 16px;
  }

  .nav {
    gap: 8px;
  }

  .nav a {
    font-size: 0.75rem;
  }

  .hero {
    padding: 48px 0;
  }

  .hero h2 {
    font-size: 1.5rem;
  }

  .hero p {
    font-size: 0.9rem;
  }

  .impact-card,
  .service-card,
  .value-item {
    padding: 20px;
  }

  .impact-card .icon {
    font-size: 2rem;
  }

  .form-row.actions {
    flex-direction: column;
    align-items: stretch;
  }

  .form-row.actions .btn {
    width: 100%;
  }
}