/* ============================================================
   ABWPAY — Design System v2.0
   Premium Fintech UI — Inspired by Stripe, Revolut, Linear
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&family=JetBrains+Mono:wght@400;500;600&display=swap');

/* ── CSS Variables ───────────────────────────────────────── */
:root {
  /* Backgrounds */
  --bg-0:        #070A10;
  --bg-1:        #0B0E14;
  --bg-2:        #111827;
  --bg-3:        #1A2234;
  --bg-4:        #1F2937;

  /* Brand */
  --green:       #00E08A;
  --green-light: #00F09A;
  --green-dim:   #009960;
  --green-glow:  rgba(0, 224, 138, 0.15);
  --green-border:rgba(0, 224, 138, 0.25);
  --green-subtle:rgba(0, 224, 138, 0.06);

  /* Text */
  --text-1:      #F9FAFB;
  --text-2:      #9CA3AF;
  --text-3:      #6B7280;
  --text-4:      #374151;

  /* Borders */
  --border-1:    rgba(255, 255, 255, 0.06);
  --border-2:    rgba(255, 255, 255, 0.10);
  --border-3:    rgba(255, 255, 255, 0.15);

  /* Shadows */
  --shadow-sm:   0 2px 8px rgba(0,0,0,0.3);
  --shadow-md:   0 4px 24px rgba(0,0,0,0.4);
  --shadow-lg:   0 8px 48px rgba(0,0,0,0.5);
  --shadow-green:0 0 30px rgba(0,224,138,0.12);

  /* Radius */
  --r-sm:  8px;
  --r-md:  12px;
  --r-lg:  16px;
  --r-xl:  24px;
  --r-2xl: 32px;

  /* Spacing */
  --gap-xs: 4px;
  --gap-sm: 8px;
  --gap-md: 16px;
  --gap-lg: 24px;
  --gap-xl: 32px;
  --gap-2xl:48px;

  /* Typography */
  --ff:    'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --ff-mono:'JetBrains Mono', 'Fira Code', monospace;

  /* Transitions */
  --ease:    cubic-bezier(0.4, 0, 0.2, 1);
  --ease-out:cubic-bezier(0, 0, 0.2, 1);
  --t-fast:  0.15s;
  --t-base:  0.25s;
  --t-slow:  0.4s;
}

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

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--ff);
  background: var(--bg-1);
  color: var(--text-1);
  line-height: 1.6;
  min-height: 100vh;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
button { cursor: pointer; font-family: var(--ff); }
input, textarea, select { font-family: var(--ff); }

/* ── Typography ──────────────────────────────────────────── */
.t-hero   { font-size: clamp(2.5rem, 6vw, 5rem); font-weight: 800; letter-spacing: -0.04em; line-height: 1.08; }
.t-h1     { font-size: clamp(2rem, 4vw, 3.5rem);  font-weight: 800; letter-spacing: -0.03em; line-height: 1.1; }
.t-h2     { font-size: clamp(1.5rem, 3vw, 2.5rem); font-weight: 700; letter-spacing: -0.025em; line-height: 1.2; }
.t-h3     { font-size: 1.25rem; font-weight: 600; letter-spacing: -0.02em; line-height: 1.3; }
.t-h4     { font-size: 1rem;    font-weight: 600; letter-spacing: -0.01em; }
.t-body   { font-size: 1rem;    font-weight: 400; line-height: 1.7; }
.t-sm     { font-size: 0.875rem; font-weight: 400; line-height: 1.6; }
.t-xs     { font-size: 0.75rem;  font-weight: 400; line-height: 1.5; }
.t-label  { font-size: 0.6875rem; font-weight: 600; letter-spacing: 0.1em; text-transform: uppercase; }
.t-mono   { font-family: var(--ff-mono); font-size: 0.875rem; }

.t-gradient {
  background: linear-gradient(135deg, #00E08A 0%, #00C87A 40%, #009960 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.t-white  { color: var(--text-1); }
.t-muted  { color: var(--text-2); }
.t-dim    { color: var(--text-3); }
.t-green  { color: var(--green); }
.t-center { text-align: center; }

/* ── Navigation ──────────────────────────────────────────── */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 clamp(20px, 5vw, 64px);
  background: rgba(11, 14, 20, 0.0);
  border-bottom: 1px solid transparent;
  transition: background var(--t-slow) var(--ease),
              border-color var(--t-slow) var(--ease),
              backdrop-filter var(--t-slow) var(--ease);
}

.nav.scrolled {
  background: rgba(11, 14, 20, 0.85);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border-bottom-color: var(--border-1);
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
}

.nav-logo img {
  height: 32px;
  width: auto;
}

.nav-logo-fallback {
  font-size: 1.25rem;
  font-weight: 800;
  letter-spacing: -0.04em;
  color: var(--text-1);
}

.nav-logo-fallback span { color: var(--green); }

.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
  list-style: none;
}

.nav-links a {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 8px 14px;
  border-radius: var(--r-md);
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-2);
  transition: color var(--t-fast) var(--ease),
              background var(--t-fast) var(--ease);
}

.nav-links a:hover { color: var(--text-1); background: var(--bg-3); }

.nav-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

/* ── Buttons ──────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 20px;
  border-radius: var(--r-md);
  font-size: 0.875rem;
  font-weight: 600;
  border: none;
  transition: all var(--t-base) var(--ease);
  white-space: nowrap;
  letter-spacing: -0.01em;
}

.btn-primary {
  background: var(--green);
  color: #0B0E14;
  box-shadow: 0 0 0 0 var(--green-glow);
}

.btn-primary:hover {
  background: var(--green-light);
  box-shadow: 0 0 24px rgba(0, 224, 138, 0.35);
  transform: translateY(-1px);
}

.btn-primary:active { transform: scale(0.98); }

.btn-secondary {
  background: transparent;
  color: var(--text-2);
  border: 1px solid var(--border-2);
}

.btn-secondary:hover {
  color: var(--text-1);
  border-color: var(--border-3);
  background: var(--bg-3);
}

.btn-ghost {
  background: transparent;
  color: var(--green);
  border: 1px solid var(--green-border);
}

.btn-ghost:hover {
  background: var(--green-subtle);
  box-shadow: 0 0 16px rgba(0, 224, 138, 0.15);
}

.btn-lg { padding: 14px 28px; font-size: 1rem; border-radius: var(--r-lg); }
.btn-xl { padding: 16px 36px; font-size: 1.0625rem; border-radius: var(--r-lg); font-weight: 700; }
.btn-sm { padding: 7px 14px; font-size: 0.8125rem; }

.btn-icon {
  width: 40px; height: 40px;
  padding: 0;
  border-radius: var(--r-md);
  background: var(--bg-3);
  border: 1px solid var(--border-1);
  color: var(--text-2);
}
.btn-icon:hover { color: var(--text-1); border-color: var(--border-2); }

.btn-loading { opacity: 0.7; pointer-events: none; }

/* ── Cards ────────────────────────────────────────────────── */
.card {
  background: linear-gradient(145deg, rgba(26, 34, 52, 0.6), rgba(17, 24, 39, 0.8));
  border: 1px solid var(--border-1);
  border-radius: var(--r-xl);
  padding: var(--gap-lg);
  backdrop-filter: blur(4px);
  transition: border-color var(--t-base) var(--ease),
              box-shadow var(--t-base) var(--ease),
              transform var(--t-base) var(--ease);
}

.card:hover {
  border-color: rgba(0, 224, 138, 0.15);
  box-shadow: 0 4px 32px rgba(0, 224, 138, 0.06), var(--shadow-md);
  transform: translateY(-2px);
}

.card-glass {
  background: rgba(255, 255, 255, 0.03);
  backdrop-filter: blur(20px) saturate(150%);
  -webkit-backdrop-filter: blur(20px) saturate(150%);
  border: 1px solid var(--border-1);
  border-radius: var(--r-xl);
}

.card-green {
  background: linear-gradient(135deg, rgba(0,224,138,0.08) 0%, rgba(0,224,138,0.03) 100%);
  border: 1px solid var(--green-border);
}

/* ── Forms ────────────────────────────────────────────────── */
.form-group { display: flex; flex-direction: column; gap: 6px; }

.form-label {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-3);
}

.form-input {
  width: 100%;
  padding: 12px 14px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-1);
  border-radius: var(--r-md);
  color: var(--text-1);
  font-size: 0.9375rem;
  font-family: var(--ff);
  outline: none;
  transition: border-color var(--t-fast) var(--ease),
              box-shadow var(--t-fast) var(--ease),
              background var(--t-fast) var(--ease);
  -webkit-appearance: none;
}

.form-input::placeholder { color: var(--text-3); }

.form-input:hover { border-color: var(--border-2); background: rgba(255,255,255,0.05); }

.form-input:focus {
  border-color: rgba(0, 224, 138, 0.5);
  box-shadow: 0 0 0 3px rgba(0, 224, 138, 0.1);
  background: rgba(255, 255, 255, 0.06);
}

.form-input.with-prefix { padding-left: 36px; }
.form-input-wrapper { position: relative; }
.form-prefix {
  position: absolute;
  left: 12px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--green);
  font-weight: 600;
  font-size: 0.9375rem;
  pointer-events: none;
}

.form-error { font-size: 0.8125rem; color: #F87171; }
.form-hint  { font-size: 0.8125rem; color: var(--text-3); }

/* ── Badges & Tags ────────────────────────────────────────── */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 4px 12px;
  border-radius: 100px;
  font-size: 0.75rem;
  font-weight: 600;
}

.badge-green  { background: var(--green-subtle); color: var(--green); border: 1px solid var(--green-border); }
.badge-gray   { background: rgba(255,255,255,0.06); color: var(--text-2); border: 1px solid var(--border-1); }
.badge-red    { background: rgba(239,68,68,0.1);   color: #F87171; border: 1px solid rgba(239,68,68,0.2); }
.badge-yellow { background: rgba(251,191,36,0.1);  color: #FCD34D; border: 1px solid rgba(251,191,36,0.2); }
.badge-blue   { background: rgba(59,130,246,0.1);  color: #93C5FD; border: 1px solid rgba(59,130,246,0.2); }
.badge-dot::before {
  content: '';
  width: 6px; height: 6px;
  border-radius: 50%;
  background: currentColor;
  flex-shrink: 0;
}

/* ── Dividers ─────────────────────────────────────────────── */
.divider {
  height: 1px;
  background: var(--border-1);
  border: none;
  margin: var(--gap-lg) 0;
}

.divider-vert {
  width: 1px;
  background: var(--border-1);
  align-self: stretch;
}

/* ── Sections ─────────────────────────────────────────────── */
.section {
  padding: clamp(60px, 10vw, 120px) clamp(20px, 5vw, 64px);
  max-width: 1200px;
  margin: 0 auto;
}

.section-full {
  padding: clamp(60px, 10vw, 120px) clamp(20px, 5vw, 64px);
}

.section-header {
  text-align: center;
  margin-bottom: clamp(40px, 6vw, 72px);
}

.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-bottom: 16px;
  padding: 5px 14px;
  background: var(--green-subtle);
  border: 1px solid var(--green-border);
  border-radius: 100px;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--green);
}

/* ── Icons (SVG) ──────────────────────────────────────────── */
.icon {
  width: 20px; height: 20px;
  flex-shrink: 0;
  stroke: currentColor;
  stroke-width: 1.75;
  stroke-linecap: round;
  stroke-linejoin: round;
  fill: none;
}

.icon-sm  { width: 16px; height: 16px; }
.icon-md  { width: 20px; height: 20px; }
.icon-lg  { width: 24px; height: 24px; }
.icon-xl  { width: 32px; height: 32px; }
.icon-2xl { width: 48px; height: 48px; }

.icon-box {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px; height: 48px;
  border-radius: 14px;
  background: var(--green-subtle);
  border: 1px solid var(--green-border);
  color: var(--green);
  flex-shrink: 0;
}

.icon-box-sm {
  width: 36px; height: 36px;
  border-radius: 10px;
}

.icon-box-lg {
  width: 64px; height: 64px;
  border-radius: 18px;
}

/* ── Progress / Steps ─────────────────────────────────────── */
.steps {
  display: flex;
  gap: 4px;
}

.step-dot {
  height: 3px;
  flex: 1;
  border-radius: 3px;
  background: var(--border-1);
  transition: background var(--t-base) var(--ease);
}

.step-dot.active { background: var(--green); }
.step-dot.done   { background: var(--green-dim); }

/* ── Alerts ───────────────────────────────────────────────── */
.alert {
  display: flex;
  gap: 10px;
  padding: 12px 16px;
  border-radius: var(--r-md);
  font-size: 0.875rem;
  line-height: 1.5;
  border: 1px solid;
}

.alert-error  { background: rgba(239,68,68,0.06); border-color: rgba(239,68,68,0.2); color: #FCA5A5; }
.alert-success{ background: var(--green-subtle);  border-color: var(--green-border); color: var(--green); }
.alert-warn   { background: rgba(251,191,36,0.06);border-color: rgba(251,191,36,0.2);color: #FCD34D; }
.alert-info   { background: rgba(59,130,246,0.06);border-color: rgba(59,130,246,0.2);color: #93C5FD; }

/* ── Spinner ──────────────────────────────────────────────── */
.spinner {
  width: 18px; height: 18px;
  border: 2px solid rgba(0,0,0,0.2);
  border-top-color: #0B0E14;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  display: none;
}

.spinner.green {
  border-color: var(--green-border);
  border-top-color: var(--green);
}

.spinner.white {
  border-color: rgba(255,255,255,0.2);
  border-top-color: white;
}

.spinner.active { display: block; }

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

/* ── Modals / Overlay ─────────────────────────────────────── */
.overlay {
  position: fixed;
  inset: 0;
  background: rgba(7, 10, 16, 0.8);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  z-index: 999;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  opacity: 0;
  transition: opacity var(--t-base) var(--ease);
}

.overlay.visible { opacity: 1; }

.modal {
  width: 100%;
  max-width: 480px;
  background: var(--bg-2);
  border: 1px solid var(--border-2);
  border-radius: var(--r-2xl);
  overflow: hidden;
  transform: translateY(20px) scale(0.97);
  transition: transform var(--t-slow) cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.overlay.visible .modal {
  transform: translateY(0) scale(1);
}

/* ── Language Toggle ──────────────────────────────────────── */
.lang-toggle {
  display: flex;
  background: var(--bg-3);
  border: 1px solid var(--border-1);
  border-radius: var(--r-md);
  padding: 3px;
  gap: 2px;
}

.lang-btn {
  padding: 5px 12px;
  border-radius: 7px;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  background: transparent;
  border: none;
  color: var(--text-3);
  transition: all var(--t-fast) var(--ease);
}

.lang-btn.active {
  background: var(--bg-1);
  color: var(--text-1);
  box-shadow: var(--shadow-sm);
}

/* ── Footer ───────────────────────────────────────────────── */
.footer {
  border-top: 1px solid var(--border-1);
  padding: 48px clamp(20px, 5vw, 64px) 32px;
  background: var(--bg-0);
}

/* ── Grid helpers ─────────────────────────────────────────── */
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: var(--gap-lg); }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--gap-lg); }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--gap-lg); }
.grid-auto { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: var(--gap-lg); }

@media (max-width: 768px) {
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .nav-links { display: none; }
}

/* ── Animations ───────────────────────────────────────────── */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(24px); }
  to   { opacity: 1; transform: translateY(0); }
}

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

@keyframes popIn {
  from { opacity: 0; transform: scale(0.85); }
  to   { opacity: 1; transform: scale(1); }
}

@keyframes glow {
  0%, 100% { box-shadow: 0 0 20px rgba(0,224,138,0.2); }
  50%       { box-shadow: 0 0 40px rgba(0,224,138,0.4); }
}

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

.animate-fade-up { animation: fadeUp 0.5s var(--ease-out) both; }
.animate-fade-in { animation: fadeIn 0.4s var(--ease-out) both; }
.animate-pop-in  { animation: popIn  0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275) both; }

.delay-1 { animation-delay: 0.1s; }
.delay-2 { animation-delay: 0.2s; }
.delay-3 { animation-delay: 0.3s; }
.delay-4 { animation-delay: 0.4s; }
.delay-5 { animation-delay: 0.5s; }

/* ── Scroll fade-in ───────────────────────────────────────── */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s var(--ease-out), transform 0.6s var(--ease-out);
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ── Noise texture overlay ────────────────────────────────── */
.noise::after {
  content: '';
  position: fixed;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)' opacity='0.03'/%3E%3C/svg%3E");
  pointer-events: none;
  z-index: 9999;
  opacity: 0.4;
}

/* ── Selection ────────────────────────────────────────────── */
::selection {
  background: rgba(0, 224, 138, 0.25);
  color: var(--text-1);
}

/* ── Scrollbar ────────────────────────────────────────────── */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg-1); }
::-webkit-scrollbar-thumb { background: var(--border-2); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--border-3); }

/* ── Utility ──────────────────────────────────────────────── */
.flex          { display: flex; }
.flex-col      { display: flex; flex-direction: column; }
.items-center  { align-items: center; }
.items-start   { align-items: flex-start; }
.justify-center{ justify-content: center; }
.justify-between{ justify-content: space-between; }
.gap-xs { gap: var(--gap-xs); }
.gap-sm { gap: var(--gap-sm); }
.gap-md { gap: var(--gap-md); }
.gap-lg { gap: var(--gap-lg); }
.gap-xl { gap: var(--gap-xl); }
.w-full { width: 100%; }
.hidden { display: none; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0,0,0,0); }

/* French/English visibility */
[data-lang="en"] { display: none; }
[data-lang="fr"] { display: block; }
body.lang-en [data-lang="en"] { display: block; }
body.lang-en [data-lang="fr"] { display: none; }