/* ============================================================================
   NexPeer — Main Stylesheet
   Brand tokens, base styles, typography
   ----------------------------------------------------------------------------
   Palette:
     Navy   #0A1A3F  (primary dark, grad cap color)
     Royal  #1E3A8A  (primary blue, "NP" color)
     Gold   #F5B301  (accent, tassel color)
   ============================================================================ */

/* ---------------------------------------------------------------------------
   1. Design tokens
--------------------------------------------------------------------------- */

:root {
  /* Brand colors */
  --np-navy:        #0A1A3F;
  --np-navy-soft:   #14264F;
  --np-navy-deep:   #06122B;
  --np-royal:       #1E3A8A;
  --np-royal-light: #3B5BC7;
  --np-royal-50:    #EEF2FF;
  --np-gold:        #F5B301;
  --np-gold-light:  #FFD24A;
  --np-gold-soft:   #FFF6DB;
  --np-gold-deep:   #8a6400;

  /* Neutrals */
  --np-ink:         #0F172A;
  --np-muted:       #64748B;
  --np-surface:     #FFFFFF;
  --np-canvas:      #F8FAFC;
  --np-border:      #E2E8F0;
  --np-border-soft: #F1F5F9;

  /* Feedback */
  --np-success:     #059669;
  --np-success-bg:  #ECFDF5;
  --np-warning:     #D97706;
  --np-warning-bg:  #FFF6DB;
  --np-danger:      #DC2626;
  --np-danger-bg:   #FEF2F2;
  --np-info-bg:     #EEF2FF;

  /* Typography */
  --np-font: 'Inter', ui-sans-serif, system-ui, -apple-system,
             'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --np-mono: 'JetBrains Mono', ui-monospace, 'SFMono-Regular', Menlo, monospace;

  /* Radii */
  --np-radius-sm: 0.5rem;
  --np-radius:    0.875rem;
  --np-radius-lg: 1.25rem;
  --np-radius-xl: 1.5rem;

  /* Shadows */
  --np-shadow-xs: 0 1px 2px rgba(10, 26, 63, 0.05);
  --np-shadow-sm: 0 2px 6px rgba(10, 26, 63, 0.06);
  --np-shadow:    0 6px 18px rgba(10, 26, 63, 0.08);
  --np-shadow-lg: 0 16px 40px rgba(10, 26, 63, 0.12);

  /* Motion */
  --np-ease: cubic-bezier(0.22, 1, 0.36, 1);
  --np-ease-in: cubic-bezier(0.4, 0, 1, 1);
  --np-fast: 150ms;
  --np-base: 250ms;
  --np-slow: 400ms;

  /* Layout */
  --np-container: 72rem;
  --np-container-wide: 80rem;
  --np-header-h: 4rem;
}

/* ---------------------------------------------------------------------------
   2. Base reset + body
--------------------------------------------------------------------------- */

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

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--np-header-h) + 1rem);
}

body {
  margin: 0;
  padding: 0;
  font-family: var(--np-font);
  font-size: 16px;
  line-height: 1.5;
  color: var(--np-ink);
  background: var(--np-canvas);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

/* Prevent layout shift from scrollbar appearance */
body { overflow-y: scroll; }

/* ---------------------------------------------------------------------------
   3. Typography
--------------------------------------------------------------------------- */

h1, h2, h3, h4, h5, h6 {
  margin: 0;
  color: var(--np-navy);
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -0.02em;
}

h1 { font-size: clamp(1.75rem, 4vw, 2.75rem); }
h2 { font-size: clamp(1.5rem, 3vw, 2rem); }
h3 { font-size: 1.25rem; }
h4 { font-size: 1.125rem; }

p { margin: 0 0 1rem; }
p:last-child { margin-bottom: 0; }

a {
  color: var(--np-royal);
  text-decoration: none;
  transition: color var(--np-fast);
}

a:hover { color: var(--np-royal-light); }

strong { font-weight: 700; color: var(--np-navy); }

code, pre, kbd, samp {
  font-family: var(--np-mono);
  font-size: 0.9em;
}

pre {
  background: var(--np-canvas);
  border: 1px solid var(--np-border);
  border-radius: var(--np-radius);
  padding: 1rem;
  overflow-x: auto;
}

code {
  background: var(--np-canvas);
  padding: 0.125rem 0.375rem;
  border-radius: 0.25rem;
  color: var(--np-royal);
}

pre code {
  background: none;
  padding: 0;
  color: inherit;
}

hr {
  border: none;
  border-top: 1px solid var(--np-border);
  margin: 1.5rem 0;
}

/* ---------------------------------------------------------------------------
   4. Focus styles
--------------------------------------------------------------------------- */

:focus { outline: none; }

:focus-visible {
  outline: 3px solid rgba(245, 179, 1, 0.5);
  outline-offset: 2px;
  border-radius: 4px;
}

/* ---------------------------------------------------------------------------
   5. Selection + scrollbar
--------------------------------------------------------------------------- */

::selection {
  background: rgba(30, 58, 138, 0.15);
  color: var(--np-navy);
}

::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: var(--np-canvas); }
::-webkit-scrollbar-thumb {
  background: rgba(10, 26, 63, 0.2);
  border-radius: 9999px;
  border: 2px solid var(--np-canvas);
}
::-webkit-scrollbar-thumb:hover { background: rgba(10, 26, 63, 0.35); }

/* ---------------------------------------------------------------------------
   6. Utility classes
--------------------------------------------------------------------------- */

.np-container {
  max-width: var(--np-container);
  margin: 0 auto;
  padding-left: 1rem;
  padding-right: 1rem;
}
@media (min-width: 768px) {
  .np-container { padding-left: 1.5rem; padding-right: 1.5rem; }
}

.np-container-wide { max-width: var(--np-container-wide); }

.np-hidden { display: none !important; }
.np-sr-only {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.np-text-center { text-align: center; }
.np-text-muted  { color: var(--np-muted); }
.np-text-navy   { color: var(--np-navy); }
.np-text-royal  { color: var(--np-royal); }
.np-text-gold   { color: var(--np-gold); }

.np-mt-1 { margin-top: 0.25rem; }
.np-mt-2 { margin-top: 0.5rem; }
.np-mt-3 { margin-top: 0.75rem; }
.np-mt-4 { margin-top: 1rem; }
.np-mb-2 { margin-bottom: 0.5rem; }
.np-mb-4 { margin-bottom: 1rem; }
.np-mb-6 { margin-bottom: 1.5rem; }

/* Gradient text */
.np-gradient-text {
  background: linear-gradient(135deg, var(--np-royal) 0%, var(--np-navy) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.np-gradient-text-gold {
  background: linear-gradient(135deg, var(--np-gold) 0%, var(--np-gold-deep) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* ---------------------------------------------------------------------------
   7. Animations
--------------------------------------------------------------------------- */

@keyframes np-fade-up {
  from { opacity: 0; transform: translateY(12px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes np-fade-in {
  from { opacity: 0; }
  to   { opacity: 1; }
}

@keyframes np-shimmer {
  0%   { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

@keyframes np-pulse {
  0%, 100% { opacity: 1; }
  50%      { opacity: 0.5; }
}

@keyframes np-spin {
  to { transform: rotate(360deg); }
}

.np-fade-up { animation: np-fade-up var(--np-slow) var(--np-ease) both; }
.np-fade-in { animation: np-fade-in var(--np-base) var(--np-ease) both; }
.np-delay-1 { animation-delay: 60ms; }
.np-delay-2 { animation-delay: 120ms; }
.np-delay-3 { animation-delay: 180ms; }
.np-delay-4 { animation-delay: 240ms; }

/* ---------------------------------------------------------------------------
   8. FOUC fix (page revealed once styles load)
--------------------------------------------------------------------------- */

body.np-opacity-0 {
  opacity: 0;
  transition: opacity var(--np-base) var(--np-ease);
}
body.np-opacity-0.np-ready {
  opacity: 1;
}

/* ---------------------------------------------------------------------------
   9. Logo
--------------------------------------------------------------------------- */

.np-brand {
  display: inline-flex;
  align-items: center;
  gap: 0.625rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  text-decoration: none;
  color: var(--np-navy);
}

.np-logo {
  display: block;
  width: 2.5rem;
  height: 2.5rem;
  object-fit: contain;
  aspect-ratio: 1 / 1;
  filter: drop-shadow(0 1px 2px rgba(10, 26, 63, 0.08));
  transition: transform var(--np-base) var(--np-ease);
}
.np-brand:hover .np-logo { transform: scale(1.05); }

.np-logo-lg {
  width: 6rem;
  height: 6rem;
  object-fit: contain;
  filter: drop-shadow(0 6px 18px rgba(10, 26, 63, 0.15));
}

.np-brand-fallback {
  display: none;
  align-items: center;
  justify-content: center;
  width: 2.5rem;
  height: 2.5rem;
  border-radius: 0.625rem;
  background: linear-gradient(135deg, var(--np-royal) 0%, var(--np-navy) 100%);
  color: var(--np-gold);
  font-weight: 900;
  font-size: 0.875rem;
  letter-spacing: -0.03em;
  flex-shrink: 0;
}

.np-brand-text {
  font-size: 1.125rem;
  color: var(--np-navy);
}

.np-brand-on-dark .np-brand-text { color: #fff; }
.np-brand-on-dark .np-logo {
  filter: drop-shadow(0 0 12px rgba(245, 179, 1, 0.2));
}

/* ---------------------------------------------------------------------------
   10. Reduced motion
--------------------------------------------------------------------------- */

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}