/* Zisco IT Consulting – Design System */
:root {
  --color-bg: #0a0f1a;
  --color-bg-elevated: #111827;
  --color-bg-card: #151d2e;
  --color-surface: #1a2332;
  --color-border: rgba(255, 255, 255, 0.08);
  --color-text: #e8edf5;
  --color-text-muted: #94a3b8;
  --color-accent: #38bdf8;
  --color-accent-dark: #0ea5e9;
  --color-accent-glow: rgba(56, 189, 248, 0.15);
  --color-secondary: #818cf8;
  --color-success: #34d399;
  --font-sans: "DM Sans", system-ui, -apple-system, sans-serif;
  --font-display: "Outfit", var(--font-sans);
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --shadow-lg: 0 24px 48px rgba(0, 0, 0, 0.4);
  --max-width: 1200px;
  --header-height: 72px;
  --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-sans);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; height: auto; display: block; }
a { color: var(--color-accent); text-decoration: none; transition: color var(--transition); }
a:hover { color: #7dd3fc; }

.container {
  width: min(100% - 2rem, var(--max-width));
  margin-inline: auto;
}

/* Typography */
h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: -0.02em;
}

h1 { font-size: clamp(2.25rem, 5vw, 3.5rem); }
h2 { font-size: clamp(1.75rem, 3.5vw, 2.5rem); }
h3 { font-size: clamp(1.15rem, 2vw, 1.35rem); }

.lead {
  font-size: clamp(1.05rem, 2vw, 1.25rem);
  color: var(--color-text-muted);
  max-width: 62ch;
}

.eyebrow {
  display: inline-block;
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 0.75rem;
}

/* Header */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--header-height);
  background: rgba(10, 15, 26, 0.85);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--color-border);
  transition: background var(--transition);
}

.site-header.scrolled {
  background: rgba(10, 15, 26, 0.95);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-height);
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.625rem;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--color-text);
}

.logo-mark {
  width: 36px;
  height: 36px;
  background: linear-gradient(135deg, var(--color-accent), var(--color-secondary));
  border-radius: var(--radius-sm);
  display: grid;
  place-items: center;
  font-size: 0.875rem;
  font-weight: 800;
  color: var(--color-bg);
}

.nav-desktop {
  display: none;
  align-items: center;
  gap: 0.25rem;
}

.nav-desktop a {
  color: var(--color-text-muted);
  padding: 0.5rem 0.875rem;
  border-radius: var(--radius-sm);
  font-size: 0.9375rem;
  font-weight: 500;
}

.nav-desktop a:hover,
.nav-desktop a.active {
  color: var(--color-text);
  background: rgba(255, 255, 255, 0.05);
}

.nav-cta {
  margin-left: 0.5rem;
}

.menu-toggle {
  display: flex;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
}

.menu-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: var(--transition);
}

.menu-toggle[aria-expanded="true"] span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}
.menu-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.menu-toggle[aria-expanded="true"] span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

.nav-mobile {
  display: none;
  position: fixed;
  top: var(--header-height);
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--color-bg);
  padding: 1.5rem;
  overflow-y: auto;
  z-index: 999;
}

.nav-mobile.open { display: block; }

.nav-mobile a {
  display: block;
  color: var(--color-text);
  padding: 0.875rem 0;
  font-size: 1.125rem;
  border-bottom: 1px solid var(--color-border);
}

.nav-mobile .nav-group-label {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-text-muted);
  padding-top: 1.25rem;
  padding-bottom: 0.5rem;
}

@media (min-width: 960px) {
  .nav-desktop { display: flex; }
  .menu-toggle { display: none; }
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  font-family: var(--font-sans);
  font-size: 0.9375rem;
  font-weight: 600;
  border-radius: var(--radius-md);
  border: none;
  cursor: pointer;
  transition: all var(--transition);
  text-decoration: none;
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-accent-dark), var(--color-accent));
  color: var(--color-bg);
}

.btn-primary:hover {
  color: var(--color-bg);
  transform: translateY(-1px);
  box-shadow: 0 8px 24px var(--color-accent-glow);
}

.btn-secondary {
  background: transparent;
  color: var(--color-text);
  border: 1px solid var(--color-border);
}

.btn-secondary:hover {
  color: var(--color-text);
  border-color: rgba(255, 255, 255, 0.2);
  background: rgba(255, 255, 255, 0.04);
}

.btn-group {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 2rem;
}

/* Hero */
.hero {
  padding-top: calc(var(--header-height) + 4rem);
  padding-bottom: 5rem;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  top: -20%;
  right: -10%;
  width: 60%;
  height: 80%;
  background: radial-gradient(ellipse, var(--color-accent-glow) 0%, transparent 70%);
  pointer-events: none;
}

.hero-grid {
  display: grid;
  gap: 3rem;
  align-items: center;
}

.hero-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 1.5rem;
}

.tag {
  font-size: 0.8125rem;
  padding: 0.375rem 0.875rem;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--color-border);
  color: var(--color-text-muted);
}

.hero-visual {
  position: relative;
}

.hero-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: 2rem;
  box-shadow: var(--shadow-lg);
}

.hero-stat-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-top: 1.5rem;
}

.stat-box {
  background: var(--color-surface);
  border-radius: var(--radius-md);
  padding: 1.25rem;
  text-align: center;
}

.stat-box strong {
  display: block;
  font-family: var(--font-display);
  font-size: 1.75rem;
  color: var(--color-accent);
}

.stat-box span {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
}

@media (min-width: 768px) {
  .hero-grid { grid-template-columns: 1.1fr 0.9fr; }
}

/* Sections */
section { padding: 5rem 0; }

.section-header {
  margin-bottom: 3rem;
}

.section-header.center {
  text-align: center;
}

.section-header.center .lead { margin-inline: auto; }

.bg-elevated { background: var(--color-bg-elevated); }
.bg-gradient {
  background: linear-gradient(180deg, var(--color-bg) 0%, var(--color-bg-elevated) 100%);
}

/* Service Cards */
.services-grid {
  display: grid;
  gap: 1.5rem;
}

@media (min-width: 640px) {
  .services-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (min-width: 960px) {
  .services-grid { grid-template-columns: repeat(3, 1fr); }
}

.service-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  transition: all var(--transition);
  display: flex;
  flex-direction: column;
}

.service-card:hover {
  border-color: rgba(56, 189, 248, 0.3);
  transform: translateY(-4px);
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.3);
}

.service-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  background: var(--color-accent-glow);
  display: grid;
  place-items: center;
  font-size: 1.5rem;
  margin-bottom: 1.25rem;
}

.service-card p {
  color: var(--color-text-muted);
  flex: 1;
  margin-bottom: 1.25rem;
}

.service-card .link-arrow {
  font-weight: 600;
  font-size: 0.9375rem;
  color: var(--color-accent);
}

/* Process Steps */
.steps {
  display: grid;
  gap: 2rem;
}

@media (min-width: 768px) {
  .steps { grid-template-columns: repeat(3, 1fr); }
}

.step {
  position: relative;
  padding: 2rem;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
}

.step-number {
  font-family: var(--font-display);
  font-size: 3rem;
  font-weight: 700;
  color: rgba(56, 189, 248, 0.2);
  line-height: 1;
  margin-bottom: 0.75rem;
}

.step h3 { margin-bottom: 0.75rem; }
.step p { color: var(--color-text-muted); font-size: 0.9375rem; }

/* Feature list */
.feature-grid {
  display: grid;
  gap: 1.5rem;
}

@media (min-width: 768px) {
  .feature-grid { grid-template-columns: repeat(2, 1fr); }
}

.feature-item {
  display: flex;
  gap: 1rem;
  padding: 1.5rem;
  background: var(--color-surface);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
}

.feature-icon {
  flex-shrink: 0;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  background: var(--color-accent-glow);
  display: grid;
  place-items: center;
  color: var(--color-accent);
  font-weight: 700;
}

.feature-item h4 { margin-bottom: 0.375rem; font-size: 1rem; }
.feature-item p { color: var(--color-text-muted); font-size: 0.875rem; }

/* Partner banner */
.partner-banner {
  background: linear-gradient(135deg, rgba(56, 189, 248, 0.08), rgba(129, 140, 248, 0.08));
  border: 1px solid rgba(56, 189, 248, 0.2);
  border-radius: var(--radius-xl);
  padding: 2.5rem;
  display: grid;
  gap: 2rem;
  align-items: center;
}

@media (min-width: 768px) {
  .partner-banner { grid-template-columns: 1fr auto; }
}

.partner-logo {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.125rem;
  color: var(--color-secondary);
}

/* FAQ */
.faq-list { display: grid; gap: 0.75rem; }

.faq-item {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.faq-question {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  padding: 1.25rem 1.5rem;
  background: none;
  border: none;
  color: var(--color-text);
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 600;
  text-align: left;
  cursor: pointer;
}

.faq-question::after {
  content: "+";
  font-size: 1.25rem;
  color: var(--color-accent);
  transition: transform var(--transition);
}

.faq-item.open .faq-question::after { transform: rotate(45deg); }

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease;
}

.faq-answer-inner {
  padding: 0 1.5rem 1.25rem;
  color: var(--color-text-muted);
  font-size: 0.9375rem;
}

.faq-item.open .faq-answer { max-height: 500px; }

/* Page hero (subpages) */
.page-hero {
  padding-top: calc(var(--header-height) + 3rem);
  padding-bottom: 3rem;
  border-bottom: 1px solid var(--color-border);
}

.breadcrumb {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  margin-bottom: 1.5rem;
}

.breadcrumb a { color: var(--color-text-muted); }
.breadcrumb a:hover { color: var(--color-accent); }

.content-section {
  padding: 4rem 0;
}

.content-section h2 { margin: 2.5rem 0 1rem; }
.content-section h3 { margin: 2rem 0 0.75rem; }
.content-section p { color: var(--color-text-muted); margin-bottom: 1rem; max-width: 72ch; }
.content-section ul, .content-section ol {
  color: var(--color-text-muted);
  margin: 1rem 0 1.5rem 1.5rem;
  max-width: 72ch;
}
.content-section li { margin-bottom: 0.5rem; }

.content-grid {
  display: grid;
  gap: 3rem;
}

@media (min-width: 960px) {
  .content-grid.sidebar { grid-template-columns: 1fr 320px; }
  .content-grid.two-col { grid-template-columns: 1fr 1fr; }
}

.sidebar-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  position: sticky;
  top: calc(var(--header-height) + 1.5rem);
}

.sidebar-card h3 { font-size: 1rem; margin-bottom: 1rem; }
.sidebar-card ul { list-style: none; margin: 0; padding: 0; }
.sidebar-card li { margin-bottom: 0.5rem; }
.sidebar-card a { color: var(--color-text-muted); font-size: 0.9375rem; }
.sidebar-card a:hover { color: var(--color-accent); }

/* Contact */
.contact-grid {
  display: grid;
  gap: 3rem;
}

@media (min-width: 768px) {
  .contact-grid { grid-template-columns: 1fr 1fr; }
}

.contact-info-item {
  display: flex;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.contact-info-item .icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  background: var(--color-accent-glow);
  display: grid;
  place-items: center;
  flex-shrink: 0;
}

.contact-form {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 2rem;
}

.form-group { margin-bottom: 1.25rem; }

.form-group label {
  display: block;
  font-size: 0.875rem;
  font-weight: 500;
  margin-bottom: 0.375rem;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 0.75rem 1rem;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  color: var(--color-text);
  font-family: inherit;
  font-size: 0.9375rem;
  transition: border-color var(--transition);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-accent);
}

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

.form-checkbox {
  display: flex;
  gap: 0.625rem;
  align-items: flex-start;
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

.form-checkbox input { margin-top: 0.25rem; flex-shrink: 0; }

/* CTA Section */
.cta-section {
  padding: 4rem 0;
}

.cta-box {
  background: linear-gradient(135deg, var(--color-bg-card), var(--color-surface));
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: clamp(2rem, 5vw, 4rem);
  text-align: center;
}

.cta-box h2 { margin-bottom: 1rem; }
.cta-box .lead { margin-inline: auto; margin-bottom: 0; }

/* Footer */
.site-footer {
  background: var(--color-bg-elevated);
  border-top: 1px solid var(--color-border);
  padding: 4rem 0 2rem;
}

.footer-grid {
  display: grid;
  gap: 2.5rem;
  margin-bottom: 3rem;
}

@media (min-width: 640px) {
  .footer-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (min-width: 960px) {
  .footer-grid { grid-template-columns: 2fr 1fr 1fr 1fr; }
}

.footer-brand p {
  color: var(--color-text-muted);
  font-size: 0.9375rem;
  margin-top: 1rem;
  max-width: 32ch;
}

.footer-col h4 {
  font-size: 0.8125rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-text-muted);
  margin-bottom: 1rem;
}

.footer-col ul { list-style: none; }
.footer-col li { margin-bottom: 0.5rem; }
.footer-col a {
  color: var(--color-text-muted);
  font-size: 0.9375rem;
}

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

.footer-bottom {
  padding-top: 2rem;
  border-top: 1px solid var(--color-border);
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: space-between;
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

.footer-bottom a { color: var(--color-text-muted); }

/* Geo badge */
.geo-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.875rem;
  color: var(--color-text-muted);
  margin-top: 1rem;
}

/* Utility */
.text-accent { color: var(--color-accent); }
.mt-2 { margin-top: 2rem; }
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

.skip-link {
  position: absolute;
  top: -100%;
  left: 1rem;
  z-index: 9999;
  padding: 0.75rem 1rem;
  background: var(--color-accent);
  color: var(--color-bg);
  border-radius: var(--radius-sm);
  font-weight: 600;
}

.skip-link:focus { top: 1rem; }