/* ============================================
   Industry Solutions, LLC — Site Stylesheet
   ============================================ */

:root {
  --color-bg: #ffffff;
  --color-bg-alt: #f5f7fa;
  --color-bg-dark: #0f172a;
  --color-text: #1e293b;
  --color-text-muted: #64748b;
  --color-text-light: #cbd5e1;
  --color-primary: #1e40af;
  --color-primary-dark: #1e3a8a;
  --color-primary-light: #3b82f6;
  --color-accent: #f59e0b;
  --color-border: #e2e8f0;
  --shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.06);
  --shadow-md: 0 4px 12px rgba(15, 23, 42, 0.08);
  --shadow-lg: 0 12px 32px rgba(15, 23, 42, 0.12);
  --radius: 8px;
  --radius-lg: 16px;
  --max-width: 1200px;
  --transition: 200ms ease;
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-text);
  background: var(--color-bg);
}

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

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

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

h1, h2, h3, h4 {
  font-weight: 700;
  line-height: 1.25;
  color: var(--color-bg-dark);
}

h1 { font-size: clamp(2rem, 4vw, 3rem); margin-bottom: 1rem; }
h2 { font-size: clamp(1.5rem, 3vw, 2.25rem); margin-bottom: 1rem; }
h3 { font-size: 1.25rem; margin-bottom: 0.75rem; }

p { margin-bottom: 1rem; color: var(--color-text); }

/* ===== Layout ===== */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}

section {
  padding: 5rem 0;
}

section.alt {
  background: var(--color-bg-alt);
}

/* ===== Header / Nav ===== */
.site-header {
  position: sticky;
  top: 0;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--color-border);
  z-index: 100;
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.5rem;
  max-width: var(--max-width);
  margin: 0 auto;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.625rem;
  font-weight: 700;
  font-size: 1.125rem;
  color: var(--color-bg-dark);
}

.brand-mark {
  width: 32px;
  height: 32px;
  border-radius: 6px;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
  display: grid;
  place-items: center;
  color: white;
  font-weight: 800;
  font-size: 14px;
  box-shadow: var(--shadow-sm);
}

.nav-links {
  display: flex;
  gap: 2rem;
  list-style: none;
  align-items: center;
}

.nav-links a {
  color: var(--color-text);
  font-weight: 500;
  font-size: 0.95rem;
}

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

.nav-cta {
  background: var(--color-primary);
  color: white !important;
  padding: 0.5rem 1rem;
  border-radius: var(--radius);
  font-weight: 600;
}

.nav-cta:hover {
  background: var(--color-primary-dark);
  color: white !important;
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
  color: var(--color-text);
}

@media (max-width: 820px) {
  .nav-toggle { display: block; }
  .nav-links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: white;
    flex-direction: column;
    padding: 1rem 1.5rem;
    gap: 1rem;
    border-bottom: 1px solid var(--color-border);
    box-shadow: var(--shadow-md);
  }
  .nav-links.open { display: flex; }
}

/* ===== Buttons ===== */
.btn {
  display: inline-block;
  padding: 0.875rem 1.75rem;
  border-radius: var(--radius);
  font-weight: 600;
  font-size: 1rem;
  cursor: pointer;
  border: none;
  transition: all var(--transition);
  text-align: center;
}

.btn-primary {
  background: var(--color-primary);
  color: white;
  box-shadow: var(--shadow-sm);
}

.btn-primary:hover {
  background: var(--color-primary-dark);
  color: white;
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.btn-outline {
  background: transparent;
  color: var(--color-primary);
  border: 2px solid var(--color-primary);
}

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

.btn-row {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  margin-top: 1.5rem;
}

/* ===== Hero ===== */
.hero {
  background: linear-gradient(135deg, #0f172a 0%, #1e3a8a 100%);
  color: white;
  padding: 6rem 0 5rem;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(circle at 20% 30%, rgba(59, 130, 246, 0.25) 0%, transparent 45%),
    radial-gradient(circle at 80% 70%, rgba(245, 158, 11, 0.15) 0%, transparent 50%);
  pointer-events: none;
}

.hero .container {
  position: relative;
  z-index: 1;
}

.hero h1 {
  color: white;
  max-width: 720px;
}

.hero p.lead {
  font-size: 1.25rem;
  color: var(--color-text-light);
  max-width: 640px;
  margin-bottom: 1rem;
}

.eyebrow {
  display: inline-block;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: white;
  padding: 0.375rem 0.875rem;
  border-radius: 999px;
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  margin-bottom: 1.25rem;
}

/* Page hero (smaller) */
.page-hero {
  background: linear-gradient(135deg, #0f172a 0%, #1e3a8a 100%);
  color: white;
  padding: 4rem 0 3rem;
  position: relative;
  overflow: hidden;
}

.page-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: radial-gradient(circle at 70% 50%, rgba(59, 130, 246, 0.25) 0%, transparent 50%);
  pointer-events: none;
}

.page-hero .container { position: relative; z-index: 1; }
.page-hero h1 { color: white; }
.page-hero p { color: var(--color-text-light); font-size: 1.125rem; max-width: 720px; }

/* ===== Section header ===== */
.section-header {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 3rem;
}

.section-header p {
  color: var(--color-text-muted);
  font-size: 1.0625rem;
}

/* ===== Cards / grids ===== */
.grid {
  display: grid;
  gap: 1.75rem;
}

.grid-2 { grid-template-columns: repeat(auto-fit, minmax(420px, 1fr)); }
.grid-3 { grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }
.grid-4 { grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); }

.card {
  background: white;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}

.card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
  border-color: transparent;
}

.card .icon {
  width: 52px;
  height: 52px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
  display: grid;
  place-items: center;
  margin-bottom: 1.25rem;
  color: white;
}

.card .icon svg {
  width: 26px;
  height: 26px;
  stroke: white;
  fill: none;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.card h3 {
  margin-bottom: 0.5rem;
}

.card p {
  color: var(--color-text-muted);
  margin-bottom: 0.75rem;
  font-size: 0.95rem;
}

.card a.read-more {
  font-weight: 600;
  font-size: 0.9rem;
}

/* ===== Stats ===== */
.stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 2rem;
  text-align: center;
}

.stat .num {
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--color-primary);
  display: block;
  line-height: 1;
}

.stat .label {
  color: var(--color-text-muted);
  font-size: 0.9rem;
  margin-top: 0.5rem;
  display: block;
}

/* ===== Two-column feature ===== */
.feature-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.feature-row.reverse > div:first-child { order: 2; }

.feature-illustration {
  background: linear-gradient(135deg, #dbeafe 0%, #eff6ff 100%);
  border-radius: var(--radius-lg);
  aspect-ratio: 4 / 3;
  display: grid;
  place-items: center;
  position: relative;
  overflow: hidden;
  border: 1px solid var(--color-border);
}

.feature-illustration svg {
  width: 60%;
  height: 60%;
  color: var(--color-primary);
}

@media (max-width: 820px) {
  .feature-row { grid-template-columns: 1fr; gap: 2rem; }
  .feature-row.reverse > div:first-child { order: 0; }
}

/* ===== Lists ===== */
ul.checklist {
  list-style: none;
  margin: 1rem 0;
}

ul.checklist li {
  padding: 0.5rem 0 0.5rem 2rem;
  position: relative;
  color: var(--color-text);
}

ul.checklist li::before {
  content: "✓";
  position: absolute;
  left: 0;
  top: 0.5rem;
  width: 22px;
  height: 22px;
  background: var(--color-primary);
  color: white;
  border-radius: 50%;
  display: grid;
  place-items: center;
  font-size: 0.75rem;
  font-weight: 700;
}

/* ===== Logo strip ===== */
.logo-strip {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  gap: 3rem;
  opacity: 0.65;
}

.logo-strip span {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-text-muted);
  letter-spacing: 0.02em;
}

/* ===== Testimonials ===== */
.testimonial {
  background: white;
  border-radius: var(--radius-lg);
  padding: 2rem;
  border: 1px solid var(--color-border);
}

.testimonial blockquote {
  font-size: 1.0625rem;
  color: var(--color-text);
  font-style: italic;
  margin-bottom: 1.25rem;
  line-height: 1.7;
}

.testimonial .author {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
  display: grid;
  place-items: center;
  color: white;
  font-weight: 700;
}

.testimonial .name { font-weight: 600; color: var(--color-bg-dark); }
.testimonial .role { font-size: 0.85rem; color: var(--color-text-muted); }

/* ===== CTA banner ===== */
.cta-banner {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  color: white;
  text-align: center;
  padding: 4rem 2rem;
  border-radius: var(--radius-lg);
  margin: 2rem auto;
  max-width: var(--max-width);
}

.cta-banner h2 { color: white; }
.cta-banner p { color: var(--color-text-light); font-size: 1.125rem; max-width: 600px; margin: 0 auto 1.5rem; }
.cta-banner .btn-primary { background: white; color: var(--color-primary); }
.cta-banner .btn-primary:hover { background: var(--color-bg-alt); color: var(--color-primary-dark); }

/* ===== Forms ===== */
form.contact-form {
  display: grid;
  gap: 1.25rem;
  max-width: 640px;
  margin: 0 auto;
}

.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1.25rem; }
@media (max-width: 600px) { .form-row { grid-template-columns: 1fr; } }

label {
  font-weight: 600;
  font-size: 0.9rem;
  display: block;
  margin-bottom: 0.375rem;
  color: var(--color-bg-dark);
}

input, select, textarea {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  font-size: 1rem;
  font-family: inherit;
  background: white;
  transition: border-color var(--transition), box-shadow var(--transition);
}

input:focus, select:focus, textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(30, 64, 175, 0.12);
}

textarea { resize: vertical; min-height: 140px; }

.form-message {
  padding: 1rem;
  background: #ecfdf5;
  border: 1px solid #a7f3d0;
  color: #065f46;
  border-radius: var(--radius);
  display: none;
}

.form-message.show { display: block; }

/* ===== Footer ===== */
.site-footer {
  background: var(--color-bg-dark);
  color: var(--color-text-light);
  padding: 4rem 0 2rem;
  margin-top: 4rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 2.5rem;
  margin-bottom: 3rem;
}

@media (max-width: 820px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

.footer-grid h4 {
  color: white;
  font-size: 0.95rem;
  margin-bottom: 1rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.footer-grid ul { list-style: none; }
.footer-grid li { margin-bottom: 0.5rem; }
.footer-grid a {
  color: var(--color-text-light);
  font-size: 0.9rem;
}
.footer-grid a:hover { color: white; }

.footer-grid .brand { color: white; margin-bottom: 1rem; }

.footer-grid p {
  color: var(--color-text-light);
  font-size: 0.9rem;
}

.footer-bottom {
  border-top: 1px solid #1e293b;
  padding-top: 1.5rem;
  text-align: center;
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

/* ===== Process steps ===== */
.steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.5rem;
  counter-reset: step;
}

.step {
  background: white;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  position: relative;
  counter-increment: step;
}

.step::before {
  content: counter(step);
  position: absolute;
  top: -16px;
  left: 1.5rem;
  background: var(--color-accent);
  color: var(--color-bg-dark);
  width: 36px;
  height: 36px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  font-weight: 800;
  font-size: 1rem;
  border: 4px solid white;
}

.step h3 { margin-top: 0.5rem; font-size: 1.1rem; }
.step p { color: var(--color-text-muted); font-size: 0.9rem; margin: 0; }

/* ===== Integration grid ===== */
.integration-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 1rem;
}

.integration-tile {
  background: white;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1.5rem 1rem;
  text-align: center;
  transition: all var(--transition);
}

.integration-tile:hover {
  border-color: var(--color-primary);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.integration-tile .logo {
  width: 48px;
  height: 48px;
  margin: 0 auto 0.75rem;
  background: var(--color-bg-alt);
  border-radius: 10px;
  display: grid;
  place-items: center;
  font-weight: 800;
  color: var(--color-primary);
  font-size: 1.125rem;
}

.integration-tile .name {
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--color-bg-dark);
}

.integration-tile .category {
  font-size: 0.75rem;
  color: var(--color-text-muted);
  margin-top: 0.25rem;
}