/* DataDecision — static site styles */

:root {
  --color-bg: #ffffff;
  --color-bg-secondary: #f7f6fb;
  --color-text-main: #16121f;
  --color-text-muted: #6b7280;
  --color-accent: #6d28d9;
  --color-accent-2: #9333ea;
  --color-border: #e5e7eb;

  --font-sans: 'Outfit', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;

  --container-width: 1100px;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 2rem;
  --space-xl: 4rem;
}

@media (prefers-color-scheme: dark) {
  :root {
    --color-bg: #100c1c;
    --color-bg-secondary: #1c1730;
    --color-text-main: #f5f3ff;
    --color-text-muted: #a89fc9;
    --color-accent: #a78bfa;
    --color-accent-2: #c084fc;
    --color-border: #332b4d;
  }
}

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

html {
  font-family: var(--font-sans);
  background-color: var(--color-bg);
  color: var(--color-text-main);
  line-height: 1.6;
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

h1, h2, h3, h4 {
  line-height: 1.2;
  margin: 0 0 var(--space-md);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--color-text-main);
}

h1 { font-size: 2.75rem; }
h2 { font-size: 2rem; margin-top: var(--space-lg); }
h3 { font-size: 1.3rem; }

p { margin: 0 0 var(--space-md); }

a {
  color: var(--color-accent);
  text-decoration: none;
  font-weight: 500;
}
a:hover { text-decoration: underline; }

.container {
  width: 100%;
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 var(--space-md);
}

main { flex: 1; }

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

.visually-hidden {
  position: absolute;
  width: 1px; height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  background-color: var(--color-accent);
  color: #ffffff;
  border-radius: 8px;
  font-weight: 600;
  transition: opacity 0.2s, transform 0.2s;
}
.btn:hover { opacity: 0.9; text-decoration: none; }

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

.actions {
  display: flex;
  gap: var(--space-md);
  justify-content: center;
  flex-wrap: wrap;
}

/* Header / Nav */
#main-header {
  padding: var(--space-md) 0;
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.75);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}
@media (prefers-color-scheme: dark) {
  #main-header { background: rgba(16, 12, 28, 0.8); }
}

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

.logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 800;
  color: var(--color-text-main);
  font-size: 1.3rem;
  text-decoration: none;
  z-index: 1001;
}
.logo:hover { text-decoration: none; }
.logo img { height: 28px; width: auto; }

#menu-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
  color: var(--color-text-main);
  z-index: 1001;
}
.icon-close { display: none; }
#menu-toggle.is-active .icon-menu { display: none; }
#menu-toggle.is-active .icon-close { display: block; }

.nav-links {
  display: flex;
  gap: var(--space-lg);
  align-items: center;
}
.nav-links a {
  color: var(--color-text-muted);
  font-size: 0.95rem;
  font-weight: 500;
  text-decoration: none;
  padding: 0.5rem 0;
  position: relative;
}
.nav-links a:hover,
.nav-links a.active { color: var(--color-accent); }
.nav-links a::after {
  content: '';
  position: absolute;
  width: 0;
  height: 2px;
  bottom: 0;
  left: 0;
  background-color: var(--color-accent);
  transition: width 0.2s ease;
}
.nav-links a:hover::after,
.nav-links a.active::after { width: 100%; }

@media (max-width: 768px) {
  #menu-toggle { display: block; }
  .nav-links {
    position: fixed;
    top: 0; left: 0;
    width: 100%; height: 100vh;
    background: var(--color-bg);
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 2rem;
    transform: translateY(-100%);
    transition: transform 0.3s ease;
    opacity: 0;
    pointer-events: none;
  }
  .nav-links.is-open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }
  .nav-links a { font-size: 1.4rem; font-weight: 600; }
}

/* Hero */
.hero {
  padding: var(--space-xl) 0;
  text-align: center;
}
.hero-title {
  font-size: 3.25rem;
  line-height: 1.1;
  margin-bottom: var(--space-md);
}
.text-gradient {
  background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-accent-2) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  display: block;
  margin-top: var(--space-sm);
}
.hero-subtitle {
  font-size: 1.2rem;
  color: var(--color-text-muted);
  max-width: 620px;
  margin: 0 auto var(--space-lg);
}
@media (max-width: 640px) {
  .hero-title { font-size: 2.25rem; }
}

/* Sections */
.section {
  padding: var(--space-xl) 0;
}
.section-alt {
  background: var(--color-bg-secondary);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}
.section-header {
  text-align: center;
  max-width: 640px;
  margin: 0 auto var(--space-lg);
}
.section-header p { color: var(--color-text-muted); }

.section-title-mark::after {
  content: '';
  display: block;
  width: 40px;
  height: 4px;
  background: var(--color-accent);
  border-radius: 2px;
  margin: 0.5rem auto 0;
}

/* Grids and cards */
.grid {
  display: grid;
  gap: var(--space-lg);
}
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
@media (max-width: 800px) {
  .grid-2, .grid-3 { grid-template-columns: 1fr; }
}

.card {
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  padding: var(--space-lg);
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}
.card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 20px -8px rgba(0, 0, 0, 0.15);
  border-color: var(--color-accent);
}
.card h3 { color: var(--color-accent); margin-top: 0; }

.card-points {
  list-style: none;
  padding: 0;
  margin: var(--space-md) 0 0;
}
.card-points li {
  position: relative;
  padding-left: 1.25rem;
  margin-bottom: 0.5rem;
  color: var(--color-text-muted);
  font-size: 0.95rem;
}
.card-points li::before {
  content: "•";
  position: absolute;
  left: 0;
  color: var(--color-accent);
  font-weight: bold;
}

/* CTA band */
.cta-box {
  text-align: center;
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  padding: var(--space-xl) var(--space-lg);
}

/* Contact page */
.contact-details {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  max-width: 640px;
  margin: 0 auto;
}
.contact-method {
  display: flex;
  align-items: center;
  padding: var(--space-md);
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  color: var(--color-text-main);
  transition: transform 0.2s, box-shadow 0.2s, border-color 0.2s;
}
.contact-method.link:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
  border-color: var(--color-accent);
  text-decoration: none;
}
.contact-method .icon {
  display: flex;
  align-items: center;
  justify-content: center;
  margin-right: var(--space-md);
  color: var(--color-accent);
  background: rgba(109, 40, 217, 0.1);
  padding: 10px;
  border-radius: 50%;
  flex-shrink: 0;
}
.contact-method .info {
  display: flex;
  flex-direction: column;
  flex: 1;
  min-width: 0;
}
.contact-method .label {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.contact-method .value {
  font-weight: 500;
  color: var(--color-text-main);
  word-break: break-word;
}
.copy-btn {
  background: transparent;
  border: none;
  cursor: pointer;
  color: var(--color-text-muted);
  padding: 8px;
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.copy-btn:hover { background-color: var(--color-bg); color: var(--color-accent); }
.hidden { display: none; }
.check-icon { color: #10b981; }

/* Footer */
footer {
  border-top: 1px solid var(--color-border);
  padding: var(--space-lg) 0;
}
.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: var(--color-text-muted);
  font-size: 0.875rem;
  flex-wrap: wrap;
  gap: var(--space-md);
}
.social-links {
  display: flex;
  gap: var(--space-md);
  align-items: center;
}
.social-links a {
  color: var(--color-text-muted);
  display: flex;
  align-items: center;
}
.social-links a:hover { color: var(--color-accent); }