/* ============================================================
   Portal Demo — Customer Storefront Design System v4
   ============================================================ */

:root {
  --cs-primary: #0d9488;
  --cs-primary-dark: #0f766e;
  --cs-primary-deeper: #115e59;
  --cs-primary-soft: #ccfbf1;
  --cs-primary-glow: rgba(13, 148, 136, 0.25);
  --cs-ink: #0b1220;
  --cs-ink-2: #1e293b;
  --cs-muted: #64748b;
  --cs-muted-light: #94a3b8;
  --cs-line: #e2e8f0;
  --cs-line-soft: #f1f5f9;
  --cs-bg: #f8fafc;
  --cs-bg-deep: #f1f5f9;
  --cs-card: #ffffff;
  --cs-ok: #059669;
  --cs-ok-soft: #d1fae5;
  --cs-warn: #d97706;
  --cs-warn-soft: #fef3c7;
  --cs-bad: #e11d48;
  --cs-bad-soft: #ffe4e6;
  --cs-info: #3b82f6;
  --cs-info-soft: #dbeafe;
  --cs-font: "Figtree", system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  --cs-display: "Sora", system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  --cs-radius: 20px;
  --cs-radius-sm: 12px;
  --cs-radius-xs: 8px;
  --cs-shadow-sm: 0 1px 2px rgba(11, 18, 32, 0.04);
  --cs-shadow: 0 4px 20px rgba(11, 18, 32, 0.06);
  --cs-shadow-md: 0 8px 30px rgba(11, 18, 32, 0.1);
  --cs-shadow-lg: 0 20px 50px rgba(11, 18, 32, 0.15);
  --cs-transition: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --cs-transition-bounce: 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body.cs-body {
  margin: 0;
  min-height: 100vh;
  min-height: 100dvh;
  background: var(--cs-bg);
  color: var(--cs-ink);
  font-family: var(--cs-font);
  font-size: 15px;
  line-height: 1.55;
  padding-bottom: 84px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  background-image:
    radial-gradient(ellipse 80% 60% at 50% -20%, var(--cs-primary-soft), transparent 60%);
}

/* Custom scrollbar */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: #cbd5e1; border-radius: 99px; }
::-webkit-scrollbar-thumb:hover { background: #94a3b8; }

/* Focus ring for accessibility */
:focus-visible {
  outline: 2px solid var(--cs-primary);
  outline-offset: 2px;
  border-radius: var(--cs-radius-xs);
}

/* ============================================================
   Demo Bar
   ============================================================ */
.cs-demo-bar {
  background: linear-gradient(90deg, var(--cs-primary-deeper), var(--cs-primary), var(--cs-primary-bright));
  color: #ecfdf5;
  text-align: center;
  padding: 10px 16px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.02em;
  position: relative;
  overflow: hidden;
}
.cs-demo-bar::before {
  content: "";
  position: absolute;
  inset: 0;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.05'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
  pointer-events: none;
}
.cs-demo-bar a {
  color: #fff;
  margin-left: 8px;
  text-decoration: none;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: 6px;
  background: rgba(255,255,255,0.15);
  transition: background var(--cs-transition);
}
.cs-demo-bar a:hover { background: rgba(255,255,255,0.25); }

/* ============================================================
   Header
   ============================================================ */
.cs-header {
  position: sticky;
  top: 0;
  z-index: 40;
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 12px 18px;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(16px) saturate(180%);
  -webkit-backdrop-filter: blur(16px) saturate(180%);
  border-bottom: 1px solid var(--cs-line);
}
.cs-brand {
  display: flex;
  align-items: center;
  gap: 11px;
  text-decoration: none;
  color: inherit;
  border-radius: var(--cs-radius-sm);
  padding: 4px;
  margin: -4px;
  transition: background var(--cs-transition);
}
.cs-brand:hover { background: var(--cs-line-soft); }
.cs-brand img {
  width: 42px;
  height: 42px;
  border-radius: 14px;
  object-fit: cover;
  box-shadow: 0 6px 18px var(--cs-primary-glow);
  border: 2px solid var(--cs-primary-soft);
}
.cs-brand b {
  display: block;
  font: 700 15px var(--cs-display);
  letter-spacing: -0.02em;
  color: var(--cs-ink);
}
.cs-brand small {
  font-size: 11px;
  color: var(--cs-muted);
  font-weight: 500;
}
.cs-header-actions {
  margin-left: auto;
  display: flex;
  gap: 10px;
  align-items: center;
}
.cs-icon-btn {
  position: relative;
  width: 42px;
  height: 42px;
  border-radius: 14px;
  border: 1px solid var(--cs-line);
  background: var(--cs-card);
  display: grid;
  place-items: center;
  color: var(--cs-ink-2);
  text-decoration: none;
  transition: all var(--cs-transition);
  box-shadow: var(--cs-shadow-sm);
}
.cs-icon-btn:hover {
  border-color: var(--cs-primary);
  color: var(--cs-primary-dark);
  box-shadow: 0 0 0 3px var(--cs-primary-soft);
}
.cs-icon-btn svg { width: 18px; height: 18px; }
.cs-dot {
  position: absolute;
  top: 9px;
  right: 9px;
  width: 9px;
  height: 9px;
  background: var(--cs-bad);
  border-radius: 50%;
  border: 2px solid #fff;
  animation: pulse-dot 2s ease-in-out infinite;
}
@keyframes pulse-dot {
  0%, 100% { transform: scale(1); opacity: 1; }
  50% { transform: scale(1.3); opacity: 0.7; }
}

/* ============================================================
   Buttons
   ============================================================ */
.cs-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 20px;
  border-radius: var(--cs-radius-sm);
  border: 0;
  font: 700 13.5px var(--cs-font);
  text-decoration: none;
  cursor: pointer;
  transition: all var(--cs-transition-bounce);
  position: relative;
  overflow: hidden;
  white-space: nowrap;
}
.cs-btn svg { width: 17px; height: 17px; flex-shrink: 0; }
.cs-btn-primary {
  background: linear-gradient(135deg, var(--cs-primary-bright), var(--cs-primary-dark));
  color: #042f2e;
  box-shadow:
    0 4px 14px var(--cs-primary-glow),
    0 1px 0 rgba(255,255,255,0.2) inset;
}
.cs-btn-primary:hover {
  transform: translateY(-2px);
  box-shadow:
    0 8px 25px var(--cs-primary-glow),
    0 1px 0 rgba(255,255,255,0.2) inset;
}
.cs-btn-primary:active { transform: translateY(0); }
.cs-btn-outline {
  background: var(--cs-card);
  color: var(--cs-primary-dark);
  border: 1.5px solid var(--cs-line);
  box-shadow: var(--cs-shadow-sm);
}
.cs-btn-outline:hover {
  border-color: var(--cs-primary);
  color: var(--cs-primary);
  box-shadow: 0 0 0 3px var(--cs-primary-soft);
}
.cs-btn-ghost {
  background: transparent;
  color: var(--cs-muted);
  border: 1.5px solid transparent;
}
.cs-btn-ghost:hover {
  background: var(--cs-line-soft);
  color: var(--cs-ink);
}
.cs-btn-sm { padding: 8px 14px; font-size: 12.5px; border-radius: 10px; }
.cs-btn-sm svg { width: 15px; height: 15px; }
.cs-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none !important;
  box-shadow: none !important;
}

/* Shimmer effect for disabled buttons */
.cs-btn:disabled::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.4), transparent);
  animation: shimmer 2s infinite;
}
@keyframes shimmer {
  0% { transform: translateX(-100%); }
  100% { transform: translateX(100%); }
}

/* ============================================================
   Main Content Area
   ============================================================ */
.cs-main {
  max-width: 960px;
  width: 100%;
  margin: 0 auto;
  padding: 20px clamp(14px, 3vw, 24px) 32px;
  box-sizing: border-box;
  animation: fadeInUp 0.5s ease-out;
}
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ============================================================
   Hero Section
   ============================================================ */
.cs-hero {
  position: relative;
  overflow: hidden;
  border-radius: 28px;
  padding: 32px 28px;
  margin-bottom: 20px;
  color: #f8fafc;
  background:
    radial-gradient(ellipse 70% 80% at 100% -10%, var(--cs-primary-glow), transparent 50%),
    radial-gradient(ellipse 50% 60% at -10% 100%, var(--cs-primary-surface), transparent 45%),
    linear-gradient(145deg, #0a0f1a 0%, var(--cs-primary-deeper) 70%, var(--cs-primary) 150%);
  box-shadow: var(--cs-shadow-lg);
}
.cs-hero::before {
  content: "";
  position: absolute;
  width: 300px;
  height: 300px;
  border: 50px solid rgba(255,255,255,.03);
  border-radius: 50%;
  right: -70px;
  top: -90px;
  pointer-events: none;
  animation: hero-float 8s ease-in-out infinite;
}
.cs-hero::after {
  content: "";
  position: absolute;
  width: 180px;
  height: 180px;
  background: radial-gradient(circle, var(--cs-primary-glow), transparent 70%);
  border-radius: 50%;
  left: -40px;
  bottom: -40px;
  pointer-events: none;
  animation: hero-float 6s ease-in-out infinite reverse;
}
@keyframes hero-float {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33% { transform: translate(15px, -10px) scale(1.02); }
  66% { transform: translate(-8px, 8px) scale(0.98); }
}
.cs-hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(255,255,255,0.12);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(255,255,255,0.15);
  border-radius: 99px;
  padding: 5px 12px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--cs-primary-bright);
  margin-bottom: 14px;
  position: relative;
  z-index: 1;
}
.cs-hero h1 {
  position: relative;
  z-index: 1;
  margin: 0 0 10px;
  font: 700 clamp(28px, 6vw, 36px) var(--cs-display);
  letter-spacing: -0.04em;
  line-height: 1.15;
}
.cs-hero h1 .gradient-text {
  background: linear-gradient(135deg, var(--cs-primary-soft), var(--cs-primary-bright), var(--cs-primary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.cs-hero p {
  position: relative;
  z-index: 1;
  margin: 0 0 22px;
  font-size: 15px;
  color: #cbd5e1;
  max-width: 40ch;
  line-height: 1.6;
}
.cs-hero .cs-btn { position: relative; z-index: 1; }

/* ============================================================
   Wallet Card
   ============================================================ */
.cs-wallet {
  border-radius: 24px;
  padding: 24px;
  margin-bottom: 16px;
  color: #fff;
  background: linear-gradient(135deg, var(--cs-primary-dark) 0%, var(--cs-primary) 60%, var(--cs-primary-bright) 100%);
  box-shadow:
    0 16px 40px var(--cs-primary-glow-strong),
    0 0 0 1px rgba(255,255,255,0.1) inset;
  position: relative;
  overflow: hidden;
  animation: fadeInUp 0.5s ease-out;
}
.cs-wallet::before {
  content: "";
  position: absolute;
  width: 250px;
  height: 250px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255,255,255,0.1), transparent 70%);
  top: -80px;
  right: -60px;
  pointer-events: none;
}
.cs-wallet::after {
  content: "";
  position: absolute;
  width: 150px;
  height: 150px;
  border-radius: 50%;
  background: radial-gradient(circle, var(--cs-primary-glow), transparent 70%);
  bottom: -40px;
  left: -30px;
  pointer-events: none;
}
.cs-wallet small {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: #a7f3d0;
  position: relative;
  z-index: 1;
}
.cs-wallet strong {
  display: block;
  font: 800 38px var(--cs-display);
  letter-spacing: -0.04em;
  margin: 8px 0 18px;
  position: relative;
  z-index: 1;
  text-shadow: 0 2px 8px rgba(0,0,0,0.1);
}
.cs-wallet-actions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  position: relative;
  z-index: 1;
}
.cs-wallet-actions a {
  text-align: center;
  padding: 12px;
  border-radius: var(--cs-radius-sm);
  font-size: 13px;
  font-weight: 800;
  text-decoration: none;
  color: #fff;
  border: 1px solid rgba(255,255,255,0.25);
  background: rgba(255,255,255,0.1);
  backdrop-filter: blur(8px);
  transition: all var(--cs-transition);
}
.cs-wallet-actions a:hover {
  background: rgba(255,255,255,0.2);
  transform: translateY(-1px);
}
.cs-wallet-actions .bright {
  background: #fff;
  color: var(--cs-primary-dark);
  border-color: #fff;
  font-weight: 800;
  box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}
.cs-wallet-actions .bright:hover {
  background: var(--cs-primary-softest);
  box-shadow: 0 6px 16px rgba(0,0,0,0.15);
}

/* ============================================================
   Quick Action Grid
   ============================================================ */
.cs-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-bottom: 16px;
}
.cs-quick {
  background: var(--cs-card);
  border: 1px solid var(--cs-line);
  border-radius: 18px;
  padding: 18px;
  text-decoration: none;
  color: inherit;
  display: flex;
  flex-direction: column;
  gap: 12px;
  transition: all var(--cs-transition-bounce);
  box-shadow: var(--cs-shadow-sm);
  position: relative;
  overflow: hidden;
}
.cs-quick:hover {
  transform: translateY(-3px);
  box-shadow: var(--cs-shadow-md);
  border-color: var(--cs-primary);
}
.cs-quick::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, var(--cs-primary-soft), transparent 60%);
  opacity: 0;
  transition: opacity var(--cs-transition);
}
.cs-quick:hover::before { opacity: 1; }
.cs-quick i {
  width: 44px;
  height: 44px;
  border-radius: 14px;
  background: var(--cs-primary-soft);
  color: var(--cs-primary-dark);
  display: grid;
  place-items: center;
  position: relative;
  z-index: 1;
  box-shadow: 0 4px 10px rgba(13, 148, 136, 0.15);
}
.cs-quick svg { width: 20px; height: 20px; }
.cs-quick b {
  font-size: 14.5px;
  font-weight: 700;
  color: var(--cs-ink);
  position: relative;
  z-index: 1;
}
.cs-quick span {
  font-size: 12px;
  color: var(--cs-muted);
  font-weight: 500;
  position: relative;
  z-index: 1;
}

/* ============================================================
   Cards
   ============================================================ */
.cs-card {
  background: var(--cs-card);
  border: 1px solid var(--cs-line);
  border-radius: var(--cs-radius);
  padding: 20px;
  margin-bottom: 16px;
  box-shadow: var(--cs-shadow);
  position: relative;
  overflow: hidden;
  animation: fadeInUp 0.5s ease-out;
}
.cs-card + .cs-card { animation-delay: 0.05s; }
.cs-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--cs-primary), var(--cs-primary-bright), var(--cs-primary-soft));
  opacity: 0;
  transition: opacity var(--cs-transition);
}
.cs-card:hover::before { opacity: 1; }
.cs-card-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 16px;
}
.cs-card-icon {
  width: 40px;
  height: 40px;
  border-radius: 12px;
  background: var(--cs-primary-soft);
  color: var(--cs-primary-dark);
  display: grid;
  place-items: center;
  flex-shrink: 0;
  box-shadow: 0 4px 10px rgba(13, 148, 136, 0.12);
}
.cs-card-icon svg { width: 18px; height: 18px; }
.cs-card h2 {
  margin: 0 0 6px;
  font: 700 17px var(--cs-display);
  letter-spacing: -0.02em;
  color: var(--cs-ink);
}
.cs-card > p {
  margin: 0 0 16px;
  font-size: 13.5px;
  color: var(--cs-muted);
  line-height: 1.5;
}
.cs-card h2 + p { margin-top: -4px; }

/* ============================================================
   Forms
   ============================================================ */
.cs-field { margin-bottom: 16px; }
.cs-field label {
  display: block;
  font-size: 13px;
  font-weight: 700;
  margin-bottom: 7px;
  color: var(--cs-ink-2);
  letter-spacing: 0.01em;
}
.cs-field input,
.cs-field select {
  width: 100%;
  border: 1.5px solid var(--cs-line);
  border-radius: var(--cs-radius-sm);
  padding: 13px 15px;
  font: 500 15px var(--cs-font);
  background: var(--cs-line-soft);
  color: var(--cs-ink);
  transition: all var(--cs-transition);
}
.cs-field input::placeholder { color: var(--cs-muted-light); }
.cs-field input:focus,
.cs-field select:focus {
  outline: none;
  border-color: var(--cs-primary);
  box-shadow: 0 0 0 4px var(--cs-primary-soft);
  background: #fff;
}
.cs-field input:disabled,
.cs-field select:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  background: var(--cs-bg-deep);
}

/* ============================================================
   Plan / Bundle Grid
   ============================================================ */
.cs-plan-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
}
.cs-plan {
  border: 1.5px solid var(--cs-line);
  border-radius: 16px;
  padding: 16px;
  background: var(--cs-line-soft);
  cursor: pointer;
  transition: all var(--cs-transition-bounce);
  position: relative;
  overflow: hidden;
}
.cs-plan:hover {
  border-color: #94a3b8;
  transform: translateY(-2px);
  box-shadow: var(--cs-shadow);
}
.cs-plan.active {
  border-color: var(--cs-primary);
  background: var(--cs-card);
  box-shadow:
    0 0 0 1px var(--cs-primary),
    0 8px 24px var(--cs-primary-glow);
}
.cs-plan.active::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--cs-primary), var(--cs-primary-bright));
}
.cs-plan strong {
  display: block;
  font: 800 20px var(--cs-display);
  letter-spacing: -0.02em;
  color: var(--cs-ink);
}
.cs-plan span {
  font-size: 12.5px;
  color: var(--cs-muted);
  font-weight: 500;
}

/* ============================================================
   Network Selector Row
   ============================================================ */
.cs-net-row {
  display: flex;
  gap: 10px;
  overflow-x: auto;
  margin-bottom: 16px;
  padding-bottom: 4px;
  scrollbar-width: none;
  -ms-overflow-style: none;
}
.cs-net-row::-webkit-scrollbar { display: none; }
.cs-net-row button {
  min-width: 100px;
  border: 1.5px solid var(--cs-line);
  background: var(--cs-line-soft);
  border-radius: 14px;
  padding: 12px 18px;
  font: 800 13.5px var(--cs-font);
  cursor: pointer;
  white-space: nowrap;
  color: var(--cs-ink-2);
  transition: all var(--cs-transition);
  position: relative;
}
.cs-net-row button:hover {
  border-color: #94a3b8;
  background: var(--cs-card);
}
.cs-net-row button.active {
  border-color: var(--cs-primary);
  background: linear-gradient(135deg, var(--cs-primary-soft), var(--cs-primary-softest));
  color: var(--cs-primary-dark);
  box-shadow: 0 0 0 1px var(--cs-primary);
}
.cs-net-row button.active::after {
  content: "";
  position: absolute;
  bottom: 6px;
  left: 50%;
  transform: translateX(-50%);
  width: 16px;
  height: 3px;
  background: var(--cs-primary);
  border-radius: 99px;
}

/* ============================================================
   List / List Items
   ============================================================ */
.cs-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.cs-list-item {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 14px;
  background: var(--cs-line-soft);
  border: 1px solid transparent;
  border-radius: 16px;
  transition: all var(--cs-transition);
}
.cs-list-item:hover {
  background: var(--cs-card);
  border-color: var(--cs-line);
  box-shadow: var(--cs-shadow-sm);
}
.cs-list-item > i {
  width: 42px;
  height: 42px;
  border-radius: 14px;
  display: grid;
  place-items: center;
  flex-shrink: 0;
  box-shadow: 0 2px 8px rgba(0,0,0,0.06);
}
.cs-list-item svg { width: 18px; height: 18px; }
.cs-list-item .grow { flex: 1; min-width: 0; }
.cs-list-item b {
  display: block;
  font-size: 13.5px;
  font-weight: 700;
  color: var(--cs-ink);
  margin-bottom: 2px;
}
.cs-list-item span {
  font-size: 12.5px;
  color: var(--cs-muted);
  font-weight: 500;
}
.cs-list-item time {
  font-size: 11px;
  color: var(--cs-muted-light);
  white-space: nowrap;
  font-weight: 500;
}

/* ============================================================
   Status Badges
   ============================================================ */
.cs-status {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 11px;
  font-weight: 800;
  padding: 4px 10px;
  border-radius: 99px;
  letter-spacing: 0.02em;
  text-transform: uppercase;
}
.cs-status-ok { background: var(--cs-ok-soft); color: #065f46; }
.cs-status-pending { background: var(--cs-warn-soft); color: #92400e; }
.cs-status-bad { background: var(--cs-bad-soft); color: #9f1239; }
.cs-status-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: currentColor;
}

/* ============================================================
   Amount Grid (Top-up)
   ============================================================ */
.cs-amount-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  margin-bottom: 16px;
}
.cs-amount-grid button {
  border: 1.5px solid var(--cs-line);
  background: var(--cs-line-soft);
  border-radius: var(--cs-radius-sm);
  padding: 16px 8px;
  font: 800 13.5px var(--cs-font);
  cursor: pointer;
  color: var(--cs-ink-2);
  transition: all var(--cs-transition-bounce);
}
.cs-amount-grid button:hover {
  border-color: var(--cs-primary);
  background: var(--cs-primary-soft);
  color: var(--cs-primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px var(--cs-primary-glow);
}
.cs-amount-grid button.active {
  border-color: var(--cs-primary);
  background: linear-gradient(135deg, var(--cs-primary), var(--cs-primary-dark));
  color: #fff;
  box-shadow: 0 4px 14px var(--cs-primary-glow);
}

/* ============================================================
   Auth Pages (Login / Register)
   ============================================================ */
.cs-auth {
  max-width: 420px;
  margin: 24px auto 0;
  animation: fadeInUp 0.5s ease-out;
}
.cs-auth-header {
  text-align: center;
  margin-bottom: 28px;
}
.cs-auth-icon {
  width: 64px;
  height: 64px;
  border-radius: 20px;
  background: linear-gradient(135deg, var(--cs-primary-soft), var(--cs-primary-softest));
  color: var(--cs-primary-dark);
  display: grid;
  place-items: center;
  margin: 0 auto 16px;
  box-shadow: 0 8px 24px var(--cs-primary-glow);
}
.cs-auth-icon svg { width: 28px; height: 28px; }
.cs-auth h2 {
  font: 700 26px var(--cs-display);
  letter-spacing: -0.03em;
  margin: 0 0 8px;
  color: var(--cs-ink);
}
.cs-auth .sub {
  color: var(--cs-muted);
  font-size: 14px;
  margin: 0;
  line-height: 1.5;
}
.cs-auth .foot {
  text-align: center;
  font-size: 13.5px;
  color: var(--cs-muted);
  margin-top: 20px;
  padding-top: 20px;
  border-top: 1px solid var(--cs-line);
}
.cs-auth .foot a {
  color: var(--cs-primary-dark);
  font-weight: 700;
  text-decoration: none;
  transition: color var(--cs-transition);
}
.cs-auth .foot a:hover { color: var(--cs-primary); text-decoration: underline; }
.cs-auth-divider {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 20px 0;
  color: var(--cs-muted-light);
  font-size: 12px;
  font-weight: 600;
}
.cs-auth-divider::before,
.cs-auth-divider::after {
  content: "";
  flex: 1;
  height: 1px;
  background: var(--cs-line);
}

/* ============================================================
   Bottom Navigation
   ============================================================ */
.cs-bottom {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 50;
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  padding: 8px 6px calc(10px + env(safe-area-inset-bottom));
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(16px) saturate(180%);
  -webkit-backdrop-filter: blur(16px) saturate(180%);
  border-top: 1px solid var(--cs-line);
  box-shadow: 0 -4px 20px rgba(11, 18, 32, 0.06);
}
.cs-bottom a {
  text-decoration: none;
  color: var(--cs-muted);
  font-size: 10px;
  font-weight: 700;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 5px;
  padding: 6px 4px;
  border-radius: 12px;
  transition: all var(--cs-transition);
  position: relative;
}
.cs-bottom a:hover { color: var(--cs-primary-dark); }
.cs-bottom a.active {
  color: var(--cs-primary-dark);
}
.cs-bottom a.active::before {
  content: "";
  position: absolute;
  top: -8px;
  left: 50%;
  transform: translateX(-50%);
  width: 24px;
  height: 3px;
  background: linear-gradient(90deg, var(--cs-primary), var(--cs-primary-bright));
  border-radius: 99px;
}
.cs-bottom svg { width: 20px; height: 20px; }
.cs-bottom-badge {
  position: absolute;
  top: 2px;
  right: 6px;
  min-width: 16px;
  height: 16px;
  border-radius: 99px;
  background: var(--cs-bad);
  color: #fff;
  font-size: 9px;
  font-weight: 800;
  display: grid;
  place-items: center;
  padding: 0 4px;
  border: 2px solid #fff;
}

/* ============================================================
   Animations & Utilities
   ============================================================ */
@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}
@keyframes slideUp {
  from { opacity: 0; transform: translateY(16px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes scaleIn {
  from { opacity: 0; transform: scale(0.95); }
  to { opacity: 1; transform: scale(1); }
}
.cs-animate-in {
  animation: slideUp 0.4s ease-out both;
}
.cs-animate-in:nth-child(1) { animation-delay: 0.02s; }
.cs-animate-in:nth-child(2) { animation-delay: 0.06s; }
.cs-animate-in:nth-child(3) { animation-delay: 0.1s; }
.cs-animate-in:nth-child(4) { animation-delay: 0.14s; }
.cs-animate-in:nth-child(5) { animation-delay: 0.18s; }
.cs-animate-in:nth-child(6) { animation-delay: 0.22s; }

.cs-section-title {
  font: 700 13px var(--cs-display);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--cs-muted);
  margin: 0 0 12px;
  padding: 0 4px;
}
.cs-divider {
  height: 1px;
  background: var(--cs-line);
  border: 0;
  margin: 18px 0;
}
.cs-empty {
  text-align: center;
  padding: 40px 20px;
  color: var(--cs-muted);
}
.cs-empty svg {
  width: 48px;
  height: 48px;
  margin-bottom: 12px;
  opacity: 0.4;
}
.cs-empty p {
  margin: 0;
  font-size: 14px;
  font-weight: 500;
}

/* Gradient text utility */
.cs-gradient-text {
  background: linear-gradient(135deg, var(--cs-primary), var(--cs-primary-bright));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ============================================================
   Responsive
   ============================================================ */
@media (min-width: 640px) {
  .cs-main { padding-top: 24px; }
  .cs-plan-grid { grid-template-columns: repeat(3, 1fr); }
}

@media (min-width: 768px) {
  body.cs-body { padding-bottom: 0; }
  .cs-bottom { display: none; }
  .cs-auth { margin-top: 36px; }
  .cs-hero { padding: 40px 36px; }
  .cs-wallet strong { font-size: 44px; }
}

@media (min-width: 1024px) {
  .cs-plan-grid { grid-template-columns: repeat(3, 1fr); }
  .cs-grid { gap: 14px; }
}

@media (max-width: 380px) {
  .cs-plan-grid { grid-template-columns: 1fr; }
  .cs-amount-grid { grid-template-columns: repeat(2, 1fr); }
  .cs-grid { grid-template-columns: 1fr; }
  .cs-hero { padding: 24px 20px; }
  .cs-btn { padding: 11px 16px; font-size: 13px; }
}