/* ============================================
   OSS SHARED STYLESHEET v1.0
   Open Source Security, Inc.
   Self-hosted version - opensourcesecurity.net
   ============================================ */

/* ---------- Design Tokens ---------- */
:root {
  --navy: #1a365d;
  --navy-light: #2d4a6f;
  --navy-dark: #142745;
  --orange: #ff6b35;
  --orange-hover: #ff8555;
  --orange-soft: rgba(255, 107, 53, 0.08);
  --orange-glow: rgba(255, 107, 53, 0.3);
  --cream: #f8f4ef;
  --gray-50: #f9fafb;
  --gray-100: #f3f4f6;
  --gray-200: #e5e7eb;
  --gray-300: #d1d5db;
  --gray-500: #6b7280;
  --gray-600: #4b5563;
  --gray-700: #374151;
  --gray-800: #1f2937;
  --white: #ffffff;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 18px;
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
  --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.1),
               0 2px 4px -1px rgba(0,0,0,0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.12),
               0 4px 6px -2px rgba(0,0,0,0.08);
  --shadow-xl: 0 20px 30px -10px rgba(0,0,0,0.22);
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    "Helvetica Neue", Arial, sans-serif;
  line-height: 1.6;
  color: var(--gray-700);
  background: var(--white);
}

section {
  scroll-margin-top: 96px;
}

img {
  max-width: 100%;
  height: auto;
}

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

/* ---------- Global Typographic Patterns ---------- */
.oss-section-header {
  text-align: center;
  margin-bottom: 48px;
}

.oss-section-eyebrow {
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 0.24em;
  color: var(--orange);
  margin-bottom: 12px;
  font-weight: 600;
}

.oss-section-title {
  font-size: clamp(32px, 4.6vw, 42px);
  font-weight: 700;
  color: var(--navy);
  margin-bottom: 16px;
  position: relative;
  display: inline-block;
}

.oss-section-title::after {
  content: "";
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  bottom: -14px;
  width: 64px;
  height: 4px;
  border-radius: 999px;
  background: var(--orange);
}

.oss-section-subtitle {
  margin-top: 28px;
  font-size: 17px;
  max-width: 720px;
  color: var(--gray-500);
  line-height: 1.7;
  margin-left: auto;
  margin-right: auto;
}

/* ---------- Buttons ---------- */
.oss-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 26px;
  border-radius: 999px;
  border: 1px solid transparent;
  font-size: 15px;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  transition: all 0.25s ease;
  white-space: nowrap;
}

.oss-btn-primary {
  background: var(--orange);
  color: var(--white);
  box-shadow: 0 10px 30px var(--orange-glow);
}

.oss-btn-primary:hover {
  background: var(--orange-hover);
  transform: translateY(-2px);
  box-shadow: 0 14px 40px var(--orange-glow);
}

.oss-btn-secondary {
  background: rgba(15,23,42,0.15);
  border-color: rgba(255,255,255,0.45);
  color: var(--white);
  backdrop-filter: blur(8px);
}

.oss-btn-secondary:hover {
  background: rgba(15,23,42,0.32);
  transform: translateY(-2px);
  border-color: rgba(255,255,255,0.8);
}

.oss-btn-outline {
  background: transparent;
  border-color: var(--navy);
  color: var(--navy);
}

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

.oss-btn-block {
  width: 100%;
}

/* ---------- Fade-in on scroll ---------- */
.oss-fade-in {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.oss-fade-in.oss-visible {
  opacity: 1;
  transform: translateY(0);
}


/* =====================================================
   NAVIGATION BAR
   ===================================================== */
.oss-nav {
  background: var(--navy);
  padding: 0 24px;
  position: sticky;
  top: 0;
  z-index: 1000;
  border-bottom: 1px solid rgba(255,255,255,0.1);
}

.oss-nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.oss-nav-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: var(--white);
}

.oss-nav-logo {
  width: 36px;
  height: 36px;
}

.oss-nav-name {
  font-size: 16px;
  font-weight: 600;
  color: var(--white);
  letter-spacing: 0.01em;
}

.oss-nav-links {
  display: flex;
  align-items: center;
  gap: 6px;
  list-style: none;
}

.oss-nav-links a {
  color: rgba(255,255,255,0.8);
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  padding: 8px 14px;
  border-radius: 8px;
  transition: color 0.2s ease, background 0.2s ease;
}

.oss-nav-links a:hover,
.oss-nav-links a.active {
  color: var(--white);
  background: rgba(255,255,255,0.1);
}

.oss-nav-cta {
  background: var(--orange) !important;
  color: var(--white) !important;
  padding: 8px 18px !important;
  border-radius: 999px !important;
  font-weight: 600 !important;
}

.oss-nav-cta:hover {
  background: var(--orange-hover) !important;
}

/* Mobile nav toggle */
.oss-nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  color: var(--white);
}

.oss-nav-toggle svg {
  width: 24px;
  height: 24px;
}

@media (max-width: 900px) {
  .oss-nav-toggle {
    display: block;
  }

  .oss-nav-links {
    display: none;
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    background: var(--navy);
    flex-direction: column;
    padding: 16px 24px;
    gap: 4px;
    border-bottom: 1px solid rgba(255,255,255,0.1);
  }

  .oss-nav-links.open {
    display: flex;
  }

  .oss-nav-links a {
    padding: 12px 16px;
    width: 100%;
  }
}


/* =====================================================
   FOOTER
   ===================================================== */
.oss-footer {
  background: var(--navy);
  color: rgba(255, 255, 255, 0.85);
  padding: 60px 24px 0;
  line-height: 1.6;
}

.oss-footer a {
  color: rgba(255, 255, 255, 0.85);
  text-decoration: none;
  transition: color 0.2s ease;
}

.oss-footer a:hover {
  color: var(--orange);
}

.oss-footer-inner {
  max-width: 1000px;
  margin: 0 auto;
}

.oss-footer-grid {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 32px;
  align-items: start;
}

/* Brand Column */
.oss-footer-brand {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 12px;
}

.oss-footer-logo {
  width: 56px;
  height: 56px;
}

.oss-footer-company {
  font-size: 17px;
  font-weight: 600;
  color: #fff;
}

.oss-footer-tagline {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.6);
  line-height: 1.6;
}

.oss-footer-donation {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--orange);
  font-weight: 500;
  margin-top: 4px;
}

/* Partners Column */
.oss-footer-partners {
  text-align: center;
}

.oss-footer-heading {
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: rgba(255, 255, 255, 0.5);
  margin-bottom: 20px;
  font-weight: 600;
}

.oss-footer-partner-grid {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 18px;
  align-items: center;
}

.oss-footer-partner {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 80px;
  height: 48px;
  opacity: 0.7;
  transition: opacity 0.2s ease;
}

.oss-footer-partner:hover {
  opacity: 1;
}

.oss-footer-partner-logo {
  max-height: 32px;
  max-width: 72px;
  object-fit: contain;
}

.oss-logo-invert {
  filter: brightness(0) invert(1);
}

.oss-logo-protectli {
  filter: brightness(0) invert(1);
  max-height: 24px;
}

.oss-footer-partner-github {
  width: 28px;
  height: 28px;
  fill: rgba(255,255,255,0.7);
  transition: fill 0.2s ease;
}

.oss-footer-partner:hover .oss-footer-partner-github {
  fill: var(--orange);
}

/* Links Column */
.oss-footer-links {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.oss-footer-link {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: rgba(255, 255, 255, 0.7);
  transition: color 0.2s ease;
}

.oss-footer-link:hover {
  color: var(--orange);
}

.oss-footer-link-icon {
  font-size: 16px;
  width: 20px;
  text-align: center;
}

/* Footer Bottom */
.oss-footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 24px 0;
  margin-top: 32px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  font-size: 13px;
  color: rgba(255, 255, 255, 0.5);
}

.oss-footer-legal {
  display: flex;
  gap: 20px;
}

.oss-footer-legal a {
  color: rgba(255, 255, 255, 0.5);
  font-size: 13px;
}

.oss-footer-legal a:hover {
  color: var(--orange);
}

/* Footer Responsive */
@media (max-width: 800px) {
  .oss-footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 40px;
  }

  .oss-footer-partners {
    grid-column: span 2;
    order: 3;
  }
}

@media (max-width: 500px) {
  .oss-footer {
    padding: 48px 20px 0;
  }

  .oss-footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .oss-footer-partners {
    grid-column: span 1;
  }

  .oss-footer-bottom {
    flex-direction: column;
    gap: 16px;
    text-align: center;
  }

  .oss-footer-legal {
    flex-wrap: wrap;
    justify-content: center;
  }
}


/* =====================================================
   RESPONSIVE MARGINS (global)
   ===================================================== */
@media (max-width: 768px) {
  .oss-section-header {
    margin-bottom: 36px;
  }
}