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

:root {
  --c-bg: hsl(225, 22%, 7%);
  --c-surface: hsl(225, 18%, 11%);
  --c-surface-2: hsl(225, 16%, 15%);
  --c-border: hsl(225, 14%, 20%);
  --c-border-light: hsl(225, 12%, 26%);
  --c-text: hsl(225, 12%, 94%);
  --c-muted: hsl(225, 10%, 52%);
  --c-primary: hsl(252, 88%, 67%);
  --c-primary-dim: hsla(252, 88%, 67%, 0.15);
  --c-primary-glow: hsla(252, 88%, 67%, 0.4);
  --c-primary-dark: hsl(252, 80%, 55%);
  --c-btn: var(--c-primary);
  --c-success: hsl(152, 68%, 46%);
  --c-success-dim: hsla(152, 68%, 46%, 0.12);
  --c-error: hsl(4, 74%, 58%);
  --c-error-dim: hsla(4, 74%, 58%, 0.12);
  --c-pix: hsl(152, 68%, 40%);
  --c-pix-border: hsla(152, 68%, 46%, 0.3);
  --r-sm: 10px;
  --r-md: 14px;
  --r-lg: 20px;
  --font-family: 'Inter', system-ui, -apple-system, sans-serif;
  --ease: cubic-bezier(0.4, 0, 0.2, 1);
  --t: 0.22s;
}

html, body {
  height: 100%;
  font-family: var(--font-family);
  font-size: 15px;
  background: var(--c-bg);
  color: var(--c-text);
  -webkit-font-smoothing: antialiased;
}

/* Background decorations */
.bg-grid {
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.025) 1px, transparent 1px);
  background-size: 48px 48px;
  pointer-events: none;
  z-index: 0;
}

.bg-glow {
  position: fixed;
  top: -30vh;
  left: 50%;
  transform: translateX(-50%);
  width: 80vw;
  height: 70vh;
  background: radial-gradient(ellipse, hsla(252, 88%, 60%, 0.12) 0%, transparent 70%);
  pointer-events: none;
  z-index: 0;
}

/* App shell */
.app {
  position: relative;
  z-index: 1;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-start;
  padding: 2.5rem 1rem 5rem;
}

/* ============================================================
   SPLASH
   ============================================================ */
.splash {
  position: fixed;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2rem;
  background: var(--c-bg);
  z-index: 100;
  transition: opacity 0.4s var(--ease);
}

.splash.fade-out {
  opacity: 0;
  pointer-events: none;
}

.splash-icon {
  font-size: 3.5rem;
  animation: pulse-scale 1.6s ease-in-out infinite;
}

@keyframes pulse-scale {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.08); }
}

.splash-spinner {
  width: 32px;
  height: 32px;
  border: 3px solid var(--c-border);
  border-top-color: var(--c-primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

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

/* ============================================================
   FULLSCREEN ERROR
   ============================================================ */
.fullscreen-error {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  min-height: 80vh;
  gap: 1rem;
  max-width: 380px;
}

.error-icon { font-size: 3rem; }

.error-title {
  font-size: 1.4rem;
  font-weight: 700;
  letter-spacing: -0.03em;
}

.error-body {
  color: var(--c-muted);
  font-size: 0.9rem;
  line-height: 1.6;
}

/* ============================================================
   MAIN
   ============================================================ */
.main {
  width: 100%;
  max-width: 460px;
}

/* Header */
.header {
  text-align: center;
  margin-bottom: 2rem;
}

.header-brand {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 1.4rem;
  font-weight: 800;
  letter-spacing: -0.04em;
}

.brand-icon { font-size: 1.6rem; }

.brand-logo {
  height: 36px;
  max-width: 120px;
  object-fit: contain;
  border-radius: 6px;
}

.splash-logo-img {
  height: 64px;
  max-width: 200px;
  object-fit: contain;
}

.header-tagline {
  margin-top: 0.35rem;
  font-size: 0.82rem;
  color: var(--c-muted);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  font-weight: 500;
}

/* Progress bar */
.progress-track {
  height: 3px;
  background: var(--c-border);
  border-radius: 99px;
  margin-bottom: 0.75rem;
  overflow: hidden;
}

.progress-bar {
  height: 100%;
  width: 25%;
  background: linear-gradient(90deg, var(--c-primary), hsl(200, 80%, 60%));
  border-radius: 99px;
  transition: width 0.45s var(--ease);
  box-shadow: 0 0 12px var(--c-primary-glow);
}

/* Step labels */
.step-labels {
  display: flex;
  justify-content: space-between;
  margin-bottom: 1.5rem;
  padding: 0 2px;
}

.step-lbl {
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--c-muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  transition: color var(--t) var(--ease);
}

.step-lbl.active {
  color: var(--c-primary);
}

.step-lbl.done {
  color: var(--c-success);
}

/* Card wrapper */
.card-wrap {
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--r-lg);
  padding: 2rem;
  box-shadow:
    0 0 0 1px hsla(252, 88%, 67%, 0.05),
    0 32px 80px rgba(0,0,0,0.4);
  overflow: hidden;
}

/* ============================================================
   STEPS
   ============================================================ */
.step {
  display: none;
}

.step.active {
  display: block;
  animation: step-in 0.32s var(--ease);
}

@keyframes step-in {
  from { opacity: 0; transform: translateY(10px); }
  to   { opacity: 1; transform: translateY(0); }
}

.step-header {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  margin-bottom: 1.75rem;
}

.step-num {
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--c-primary);
  background: var(--c-primary-dim);
  border: 1px solid hsla(252, 88%, 67%, 0.25);
  border-radius: 6px;
  padding: 4px 8px;
  flex-shrink: 0;
  margin-top: 3px;
}

.step-title {
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: -0.025em;
  line-height: 1.3;
}

.step-sub {
  font-size: 0.85rem;
  color: var(--c-muted);
  margin-top: 0.2rem;
  line-height: 1.5;
}

/* ============================================================
   FORM FIELD
   ============================================================ */
.field {
  margin-bottom: 1.25rem;
}

.field-label {
  display: block;
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--c-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 0.5rem;
}

.input-wrap {
  position: relative;
  display: flex;
  align-items: center;
}

.input-icon {
  position: absolute;
  left: 0.9rem;
  font-size: 1rem;
  pointer-events: none;
  user-select: none;
}

.field-input {
  width: 100%;
  background: var(--c-surface-2);
  border: 1.5px solid var(--c-border-light);
  border-radius: var(--r-sm);
  padding: 0.75rem 1rem 0.75rem 2.75rem;
  color: var(--c-text);
  font-family: inherit;
  font-size: 1rem;
  outline: none;
  transition: border-color var(--t) var(--ease), box-shadow var(--t) var(--ease);
}

.field-input:focus {
  border-color: var(--c-primary);
  box-shadow: 0 0 0 3px var(--c-primary-dim);
}

.field-input::placeholder {
  color: var(--c-muted);
  opacity: 0.5;
}

/* ============================================================
   ALERTS
   ============================================================ */
.alert {
  padding: 0.65rem 0.9rem;
  border-radius: var(--r-sm);
  font-size: 0.86rem;
  line-height: 1.5;
  margin-bottom: 1rem;
  background: var(--c-error-dim);
  border: 1px solid hsla(4, 74%, 58%, 0.25);
  color: var(--c-error);
}

/* ============================================================
   BUTTONS
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  width: 100%;
  padding: 0.82rem 1.5rem;
  border-radius: var(--r-sm);
  font-family: inherit;
  font-size: 0.93rem;
  font-weight: 600;
  letter-spacing: 0.01em;
  cursor: pointer;
  border: none;
  transition: transform var(--t) var(--ease), box-shadow var(--t) var(--ease), background var(--t) var(--ease), opacity var(--t);
}

.btn-primary {
  background: var(--c-btn);
  color: #fff;
  box-shadow: 0 4px 24px var(--c-primary-glow);
}

.btn-primary:hover:not(:disabled) {
  background: var(--c-primary-dark);
  transform: translateY(-1px);
  box-shadow: 0 8px 32px var(--c-primary-glow);
}

.btn-primary:active:not(:disabled) {
  transform: translateY(0);
}

.btn-primary:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}

.btn-ghost {
  background: transparent;
  border: 1.5px solid var(--c-border-light);
  color: var(--c-muted);
}

.btn-ghost:hover {
  border-color: var(--c-primary);
  color: var(--c-primary);
  background: var(--c-primary-dim);
}

.btn-row {
  display: flex;
  gap: 0.75rem;
  margin-top: 1.5rem;
}

.btn-row .btn { flex: 1; }

.btn-label, .btn-arrow { transition: opacity var(--t); }
.btn-spinner {
  width: 18px;
  height: 18px;
  border: 2px solid rgba(255,255,255,0.3);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}

/* ============================================================
   ACCOUNT INFO
   ============================================================ */
.info-card {
  background: var(--c-surface-2);
  border: 1px solid var(--c-border-light);
  border-radius: var(--r-sm);
  overflow: hidden;
}

.info-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.8rem 1.1rem;
  border-bottom: 1px solid var(--c-border);
}

.info-row:last-child { border-bottom: none; }

.info-key {
  font-size: 0.85rem;
  color: var(--c-muted);
}

.info-val {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--c-text);
}

/* ============================================================
   PLANS
   ============================================================ */
.plans {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.plan-card {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 1.1rem;
  background: var(--c-surface-2);
  border: 1.5px solid var(--c-border-light);
  border-radius: var(--r-sm);
  cursor: pointer;
  transition: border-color var(--t) var(--ease), background var(--t) var(--ease), box-shadow var(--t) var(--ease), transform var(--t) var(--ease);
  text-align: left;
  width: 100%;
  font-family: inherit;
  color: var(--c-text);
}

.plan-card:hover {
  border-color: var(--c-primary);
  background: var(--c-primary-dim);
  transform: translateY(-1px);
}

.plan-card:active {
  transform: translateY(0);
}

.plan-card.selected {
  border-color: var(--c-primary);
  background: var(--c-primary-dim);
  box-shadow: 0 0 0 3px hsla(252, 88%, 67%, 0.2), 0 4px 20px var(--c-primary-glow);
}

.plan-info { display: flex; flex-direction: column; gap: 2px; }

.plan-name {
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.plan-duration {
  font-size: 0.78rem;
  color: var(--c-muted);
}

.plan-badge {
  background: var(--c-primary);
  color: #fff;
  font-size: 0.88rem;
  font-weight: 700;
  padding: 4px 10px;
  border-radius: 20px;
  letter-spacing: -0.01em;
  white-space: nowrap;
}

/* ============================================================
   ORDER / PAYMENT
   ============================================================ */
.order-box {
  background: var(--c-surface-2);
  border: 1px solid var(--c-border-light);
  border-radius: var(--r-sm);
  overflow: hidden;
  margin-bottom: 1.4rem;
}

.order-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.72rem 1.1rem;
  font-size: 0.88rem;
  border-bottom: 1px solid var(--c-border);
  color: var(--c-muted);
}

.order-row:last-child { border-bottom: none; }
.order-row strong, .order-row code { color: var(--c-text); font-size: 0.9rem; }

.order-total {
  background: var(--c-primary-dim);
}

.order-total strong {
  color: var(--c-primary) !important;
  font-size: 1.05rem !important;
}

/* PIX loading */
.pix-loading {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  padding: 2rem;
  color: var(--c-muted);
  font-size: 0.9rem;
}

.pix-loading-spinner {
  width: 22px;
  height: 22px;
  border: 2px solid var(--c-border);
  border-top-color: var(--c-primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  flex-shrink: 0;
}

/* PIX ready */
.pix-ready {
  animation: step-in 0.32s var(--ease);
}

.qr-wrap {
  display: flex;
  justify-content: center;
  margin-bottom: 1.25rem;
}

.qr-img {
  width: 180px;
  height: 180px;
  border-radius: var(--r-sm);
  border: 2px solid var(--c-border-light);
  background: #fff;
  padding: 4px;
}

.pix-label {
  font-size: 0.76rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--c-muted);
  margin-bottom: 0.5rem;
}

.pix-box {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  background: var(--c-surface-2);
  border: 1px solid var(--c-pix-border);
  border-radius: var(--r-sm);
  padding: 0.75rem 0.9rem;
  margin-bottom: 1.25rem;
}

.pix-code {
  flex: 1;
  font-family: 'Courier New', monospace;
  font-size: 0.7rem;
  word-break: break-all;
  color: var(--c-success);
  line-height: 1.55;
}

.copy-btn {
  background: none;
  border: none;
  color: var(--c-muted);
  cursor: pointer;
  padding: 5px;
  border-radius: 6px;
  flex-shrink: 0;
  transition: color var(--t), background var(--t);
  display: flex;
  align-items: center;
}

.copy-btn:hover {
  color: var(--c-primary);
  background: var(--c-primary-dim);
}

.copy-btn.copied {
  color: var(--c-success);
}

.success-banner {
  display: flex;
  align-items: flex-start;
  gap: 0.7rem;
  padding: 0.85rem 1rem;
  background: var(--c-success-dim);
  border: 1px solid hsla(152, 68%, 46%, 0.25);
  border-radius: var(--r-sm);
  font-size: 0.84rem;
  color: hsl(152, 50%, 68%);
  line-height: 1.5;
}

.success-icon { flex-shrink: 0; font-size: 1rem; }

/* Utilities */
.hidden { display: none !important; }

/* ============================================================
   PAYMENT CONFIRMED
   ============================================================ */
.payment-confirmed {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: 2rem 1rem;
  animation: confirmed-in 0.5s var(--ease);
}

@keyframes confirmed-in {
  from { opacity: 0; transform: scale(0.9); }
  to   { opacity: 1; transform: scale(1); }
}

.confirmed-icon {
  font-size: 3rem;
  margin-bottom: 1rem;
  animation: confirmed-pulse 1.8s ease-in-out infinite;
}

@keyframes confirmed-pulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.12); }
}

.confirmed-title {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--c-success);
  letter-spacing: -0.02em;
  margin-bottom: 0.6rem;
}

.confirmed-text {
  font-size: 0.88rem;
  color: var(--c-muted);
  line-height: 1.6;
  max-width: 320px;
}

.confirmed-error {
  color: var(--c-error);
}

.payment-confirmed .info-card {
  width: 100%;
  margin-bottom: 1rem;
}

.btn-restart {
  margin-top: 1.5rem;
  width: 100%;
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 480px) {
  .app { padding: 1.5rem 0.85rem 4rem; }
  .card-wrap { padding: 1.5rem 1.25rem; }
}

/* ============================================================
   PIX TIMER
   ============================================================ */
.pix-timer {
  margin: 1.25rem 0;
}

.timer-bar-track {
  height: 4px;
  background: var(--c-border);
  border-radius: 99px;
  overflow: hidden;
  margin-bottom: 0.65rem;
}

.timer-bar-fill {
  height: 100%;
  width: 100%;
  background: linear-gradient(90deg, var(--c-primary), hsl(200, 80%, 60%));
  border-radius: 99px;
  transition: width 1s linear;
  box-shadow: 0 0 8px var(--c-primary-glow);
}

.timer-bar-fill.timer-warning {
  background: linear-gradient(90deg, hsl(40, 90%, 55%), hsl(30, 95%, 50%));
  box-shadow: 0 0 8px hsla(40, 90%, 55%, 0.4);
}

.timer-bar-fill.timer-danger {
  background: linear-gradient(90deg, var(--c-error), hsl(0, 80%, 50%));
  box-shadow: 0 0 8px hsla(4, 74%, 58%, 0.4);
  animation: timer-pulse 0.8s ease-in-out infinite;
}

@keyframes timer-pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.6; }
}

.timer-info {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-size: 0.82rem;
  color: var(--c-muted);
}

.timer-icon {
  font-size: 1rem;
}

.timer-text {
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--c-text);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.04em;
}

.timer-label {
  font-size: 0.78rem;
}

/* ============================================================
   PIX EXPIRED
   ============================================================ */
.pix-expired {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: 2rem 1rem;
  animation: confirmed-in 0.5s var(--ease);
}

.expired-icon {
  font-size: 3rem;
  margin-bottom: 1rem;
  animation: confirmed-pulse 1.8s ease-in-out infinite;
}

.expired-title {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--c-error);
  letter-spacing: -0.02em;
  margin-bottom: 0.6rem;
}

.expired-text {
  font-size: 0.88rem;
  color: var(--c-muted);
  line-height: 1.6;
  max-width: 320px;
  margin-bottom: 1.5rem;
}