/* ==============================================
   risePaisa — Base Styles & Reset
   ============================================== */

/* ── Modern CSS Reset ────────────────────────── */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  -webkit-tap-highlight-color: transparent;
}

html {
  font-size: 16px;
  scroll-behavior: auto; /* 'smooth' causes scroll lag on fast swipes */
  -webkit-text-size-adjust: 100%;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  overflow-x: clip; /* Modern clean way to prevent horizontal overflow without creating nested scroll containers */
  background: #050B18; /* Prevent white flash behind body during fast scroll */
}

body {
  font-family: var(--font-body);
  font-size: var(--text-base);
  font-weight: var(--weight-normal);
  line-height: var(--leading-normal);
  color: var(--color-text);
  background-color: #050B18;
  min-height: 100vh;
  min-height: 100svh; /* stable — won't shift when mobile browser chrome changes */
  overflow-x: clip;
  position: relative;
  overscroll-behavior-x: none; /* Only prevent horizontal overscroll bounce */
  -webkit-overflow-scrolling: touch; /* Smooth momentum scroll on iOS */
  padding-bottom: env(safe-area-inset-bottom); /* Notch / home-bar safe area */
}

/* GPU-promoted fixed background layer: combines deep gradient and dot-grid.
   Eliminating background-attachment: fixed enables native GPU-composited scrolling
   on desktop and mobile with zero full-viewport repaints per scroll frame. */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image:
    radial-gradient(circle, rgba(255,255,255,0.025) 1px, transparent 1px),
    linear-gradient(160deg, #060e22 0%, #050B18 40%, #020609 100%);
  background-size: 32px 32px, 100% 100%;
  background-position: 0 0, 0 0;
  background-repeat: repeat, no-repeat;
  pointer-events: none;
  z-index: 0;
  transform: translateZ(0);
}

/* Ensure all app content renders above the body overlay */
/* #navbar-container must be ABOVE #app — both having z-index:1 caused #app
   (rendered later in DOM) to cover the navbar and block all click events. */
#navbar-container {
  position: relative;
  z-index: 300; /* Must exceed #app so navbar is always clickable */
}

#app,
#footer-container,
#whatsapp-container {
  position: relative;
  z-index: 1;
}

/* ── Typography ──────────────────────────────── */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: var(--weight-bold);
  line-height: var(--leading-tight);
  color: var(--color-heading);
  letter-spacing: -0.03em;
}

h1 { font-size: var(--text-4xl); }
h2 { font-size: var(--text-3xl); }
h3 { font-size: var(--text-2xl); }
h4 { font-size: var(--text-xl); }
h5 { font-size: var(--text-lg); }
h6 { font-size: var(--text-base); }

@media (min-width: 768px) {
  h1 { font-size: var(--text-5xl); }
  h2 { font-size: var(--text-4xl); }
  h3 { font-size: var(--text-3xl); }
}

@media (min-width: 1024px) {
  h1 { font-size: var(--text-6xl); }
  h2 { font-size: var(--text-5xl); }
}

p {
  color: var(--color-text-secondary);
  margin-bottom: var(--space-4);
  line-height: var(--leading-relaxed);
}

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

a {
  color: var(--color-accent);
  text-decoration: none;
  transition: color var(--duration-fast) var(--ease-out);
}

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

strong, b {
  font-weight: var(--weight-semibold);
  color: var(--color-text);
}

small {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

/* ── Lists ───────────────────────────────────── */
ul, ol {
  list-style: none;
}

/* ── Images ──────────────────────────────────── */
img, video {
  max-width: 100%;
  height: auto;
  display: block;
}

img {
  image-rendering: auto;
}

/* ── Forms ───────────────────────────────────── */
button, input, textarea, select {
  font-family: inherit;
  font-size: inherit;
  line-height: inherit;
  color: inherit;
  border: none;
  outline: none;
  background: none;
}

button {
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
}

input, textarea {
  width: 100%;
}

textarea {
  resize: vertical;
}

/* ── Utility ─────────────────────────────────── */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}

.container {
  width: 100%;
  max-width: var(--container-xl);
  margin: 0 auto;
  padding: 0 var(--space-5);
}

@media (min-width: 768px) {
  .container {
    padding: 0 var(--space-8);
  }
}

@media (min-width: 1024px) {
  .container {
    padding: 0 var(--space-12);
  }
}

.container-narrow {
  max-width: var(--container-md);
}

/* ── Section spacing ─────────────────────────── */
.section {
  padding: var(--space-16) 0;
}

@media (min-width: 768px) {
  .section {
    padding: var(--space-20) 0;
  }
}

@media (min-width: 1024px) {
  .section {
    padding: var(--space-24) 0;
  }
}

.section-header {
  text-align: center;
  margin-bottom: var(--space-12);
}

.section-header h2 {
  margin-bottom: var(--space-4);
}

.section-header p {
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
  font-size: var(--text-lg);
  opacity: 0.85;
}

/* Section header accent underline */
.section-header h2 {
  position: relative;
  display: inline-block;
}

/* ── Gradient Text Utility ───────────────────── */
.gradient-text {
  background: linear-gradient(135deg, #1da1f2, #4db8ff, #a8d8ff);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* ── Keyframe Animations ─────────────────────── */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(14px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}

@keyframes pageFadeIn {
  from {
    opacity: 0;
    transform: translateY(6px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes slideInRight {
  from {
    opacity: 0;
    transform: translateX(14px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes pulse {
  0%, 100% { transform: scale(1); opacity: 1; }
  50%       { transform: scale(1.03); opacity: 0.9; }
}

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

@keyframes countUp {
  from { opacity: 0; transform: translateY(6px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes float {
  0%, 100% { transform: translateY(0px); }
  50%       { transform: translateY(-4px); }
}

@keyframes floatSlow {
  0%, 100% { transform: translateY(0px); }
  50%       { transform: translateY(-6px); }
}

@keyframes glimmer {
  0%   { opacity: 0.6; }
  50%  { opacity: 1; }
  100% { opacity: 0.6; }
}

@keyframes gradientShift {
  0%   { background-position: 0% 50%; }
  50%  { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

@keyframes rotateSlow {
  from { transform: rotate(0deg); }
  to   { transform: rotate(360deg); }
}

@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateY(16px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes glowPulse {
  0%, 100% { box-shadow: 0 0 16px rgba(29,161,242,0.15); }
  50%       { box-shadow: 0 0 28px rgba(29,161,242,0.35); }
}

@keyframes borderGlow {
  0%, 100% { border-color: rgba(29,161,242,0.2); }
  50%       { border-color: rgba(29,161,242,0.5); }
}

/* ── Animation Classes ───────────────────────── */
.animate-fade-in-up {
  animation: fadeInUp var(--duration-normal) var(--ease-out) forwards;
  opacity: 0;
}

.animate-fade-in {
  animation: fadeIn var(--duration-normal) var(--ease-out) forwards;
  opacity: 0;
}

.page-enter {
  animation: pageFadeIn var(--duration-normal) var(--ease-out) forwards;
}

.animate-float {
  animation: float 4s ease-in-out infinite;
}

.animate-float-slow {
  animation: floatSlow 6s ease-in-out infinite;
}

.animate-glimmer {
  animation: glimmer 3s ease-in-out infinite;
}

/* Stagger children animations */
.stagger-children > * {
  opacity: 0;
  animation: fadeInUp var(--duration-normal) var(--ease-out) forwards;
}

.stagger-children > *:nth-child(1) { animation-delay: 0ms; }
.stagger-children > *:nth-child(2) { animation-delay: 60ms; }
.stagger-children > *:nth-child(3) { animation-delay: 120ms; }
.stagger-children > *:nth-child(4) { animation-delay: 180ms; }
.stagger-children > *:nth-child(5) { animation-delay: 240ms; }
.stagger-children > *:nth-child(6) { animation-delay: 300ms; }

/* ── Scroll-reveal (JS adds .revealed) ─────── */
.reveal {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.35s var(--ease-out), transform 0.35s var(--ease-out);
  will-change: opacity, transform;
  contain: layout style; /* Isolate reflow — prevents content below from shifting */
}

.reveal.revealed {
  opacity: 1;
  transform: translateY(0);
  will-change: auto; /* Release GPU backing texture once revealed */
}

.reveal-delay-1 { transition-delay: 50ms; }
.reveal-delay-2 { transition-delay: 100ms; }
.reveal-delay-3 { transition-delay: 150ms; }
.reveal-delay-4 { transition-delay: 200ms; }

/* ── Scrollbar ───────────────────────────────── */
::-webkit-scrollbar {
  width: 6px;
}

::-webkit-scrollbar-track {
  background: var(--color-primary);
}

::-webkit-scrollbar-thumb {
  background: linear-gradient(180deg, var(--color-accent), var(--color-accent-dark));
  border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--color-accent);
}

/* ── Selection ───────────────────────────────── */
::selection {
  background-color: rgba(29, 161, 242, 0.3);
  color: var(--color-white);
}

/* ── GPU-promote key scrolled containers for 60 FPS compositor scrolling ── */
.section,
.hero,
.footer,
#app {
  transform: translateZ(0);
  -webkit-backface-visibility: hidden;
  backface-visibility: hidden;
}

/* ── Content Visibility: skip offscreen rendering during scroll ── */
.rp-guide-section,
.rp-faq-section,
.rp-directory-section,
.footer {
  content-visibility: auto;
  contain-intrinsic-size: 0 500px;
}

/* ── Mobile Scroll Performance ──────────────── */
@media (max-width: 1024px), (hover: none) {
  /* Cap blur intensity — heavy blur causes frame drops during scroll */
  .card,
  .topic-card,
  .hero-badge,
  .cta-banner,
  .cd-pricing-card,
  .cd-mobile-cta,
  .blog-post-hero,
  .trust-bar,
  .btn-secondary,
  .btn-ghost {
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
  }

  /* Disable heavy decorative animations that cause jank during scroll */
  .hero::before,
  .hero::after,
  .hero-particle,
  .cta-banner::after {
    animation: none !important;
  }

  /* Reduce floating icon animations to avoid repaint during scroll */
  .topic-card .topic-icon {
    animation: none;
  }

  /* Reduce WhatsApp pulse ring animation complexity */
  .whatsapp-float::before {
    animation: none;
  }
}

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