/* ========================================
   SafetyNet Landing — Custom Styles
   ========================================
   Theme colors are defined in the Tailwind config
   inside index.html. CSS custom properties below
   mirror those tokens for use in plain CSS rules.
   ======================================== */

:root {
  --page:            #F8F9FA;
  --surface:         #FFFFFF;
  --border:          #E5E7EB;
  --heading:         #1A1A2E;
  --body:            #4B5563;
  --muted:           #6B7280;
  --faint:           #9CA3AF;
  --primary:         #00B8DC;
  --primary-border:  rgba(0, 184, 220, 0.2);
  --primary-muted:   rgba(0, 184, 220, 0.08);
}

/* ---- Scroll reveal ---- */
[data-reveal] {
  opacity: 0;
  transform: translateY(1.5rem);
  transition:
    opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1),
    transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

[data-reveal].revealed {
  opacity: 1;
  transform: translateY(0);
}

/* Staggered delays (for data-reveal elements) */
[data-reveal-delay="100"] { transition-delay: 100ms; }
[data-reveal-delay="150"] { transition-delay: 150ms; }
[data-reveal-delay="200"] { transition-delay: 200ms; }
[data-reveal-delay="250"] { transition-delay: 250ms; }
[data-reveal-delay="300"] { transition-delay: 300ms; }
[data-reveal-delay="400"] { transition-delay: 400ms; }
[data-reveal-delay="500"] { transition-delay: 500ms; }
[data-reveal-delay="650"] { transition-delay: 650ms; }

/* Staggered children: hidden until parent is revealed */
.reveal-child {
  opacity: 0;
  transform: translateY(1.5rem);
  transition:
    opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1),
    transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

.revealed > .reveal-child {
  opacity: 1;
  transform: translateY(0);
}

/* Staggered delays (for reveal-child elements) */
.reveal-child[data-reveal-delay="0"]   { transition-delay: 0ms; }
.reveal-child[data-reveal-delay="100"] { transition-delay: 100ms; }
.reveal-child[data-reveal-delay="200"] { transition-delay: 200ms; }
.reveal-child[data-reveal-delay="300"] { transition-delay: 300ms; }
.reveal-child[data-reveal-delay="400"] { transition-delay: 400ms; }
.reveal-child[data-reveal-delay="500"] { transition-delay: 500ms; }
.reveal-child[data-reveal-delay="650"] { transition-delay: 650ms; }

/* Respect reduced motion */
@media (prefers-reduced-motion: reduce) {
  [data-reveal],
  .reveal-child {
    opacity: 1;
    transform: none;
    transition: none;
  }
}

/* ---- Navbar states ---- */
#navbar {
  background: transparent;
}

#navbar.scrolled {
  background: color-mix(in srgb, var(--page) 90%, transparent);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
}

/* ---- Mobile menu ---- */
#mobile-menu.open {
  opacity: 1;
  pointer-events: auto;
}

/* ---- FAQ accordion ---- */
.faq-item[open] {
  border-color: var(--primary-border);
}


/* ---- Form states ---- */
#form-message.success {
  color: #10b981;
}

#form-message.error {
  color: #ef4444;
}

/* ---- Subtle noise texture overlay ---- */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 60;
  pointer-events: none;
  opacity: 0.015;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  background-repeat: repeat;
  background-size: 256px 256px;
}

/* ---- Selection color ---- */
::selection {
  background: var(--primary-muted);
  color: var(--heading);
}

/* ---- Focus ring for keyboard navigation ---- */
:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
  border-radius: 4px;
}

/* ---- i18n: FOUC prevention with safety timeout ---- */
body.i18n-loading {
  opacity: 0;
  animation: i18n-safety-show 0s 1s forwards;
}

body.i18n-ready {
  opacity: 1;
  transition: opacity 0.15s ease;
}

@keyframes i18n-safety-show {
  to { opacity: 1; }
}

/* ---- Language selector ---- */
.lang-selector {
  -webkit-appearance: none;
  -moz-appearance: none;
  appearance: none;
  background: transparent;
  background-image: url("data:image/svg+xml,%3Csvg width='10' height='6' viewBox='0 0 10 6' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M1 1l4 4 4-4' stroke='%2364748b' stroke-width='1.5' fill='none' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0 center;
  padding-right: 14px;
}

.lang-selector:hover {
  color: var(--body);
}

.lang-selector option {
  background: var(--page);
  color: var(--muted);
}

/* ---- Smooth scrolling (JS-enhanced, CSS fallback) ---- */
@media (prefers-reduced-motion: no-preference) {
  html {
    scroll-behavior: smooth;
  }
}

/* ---- Legal pages (privacy, terms) ---- */
.legal-content h2 {
  scroll-margin-top: 6rem;
}

.legal-content a {
  color: var(--primary);
  text-decoration: underline;
  text-decoration-color: var(--primary-border);
  text-underline-offset: 2px;
  transition: text-decoration-color 0.2s;
}

.legal-content a:hover {
  text-decoration-color: var(--primary);
}

.toc-link {
  transition: color 0.15s;
}

.toc-link:hover {
  color: var(--heading);
}