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

:root {
  --primary-color: #1A3C40; /* Verde esmeralda */
  --primary-hover: #27ae60; /* Verde mais escuro */
  --accent-color: #27ae60; /* Dourado suave */
  --background-start: #f0f4f8; /* Azul claro */
  --background-end: #e8f0fe; /* Azul mais claro */
  --text-primary: #1a202c; /* Cinza escuro */
  --text-secondary: #6b7280; /* Cinza médio */
  --text-error: #e53e3e; /* Vermelho */
  --card-background: #ffffff; /* White */
  --border-color: rgba(255, 255, 255, 0.25); /* Glass border */
  --shadow: 0 6px 24px rgba(0, 0, 0, 0.1);
  --shadow-hover: 0 12px 36px rgba(0, 0, 0, 0.15);
  --border-radius: 1.5rem;
  --transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  --focus-ring: 0 0 0 4px rgba(46, 204, 113, 0.3);
  --gradient-bg: linear-gradient(135deg, #f3f7fa 10%, #e0e8f0 90%);
  --glow-effect: 0 0 12px rgba(46, 204, 113, 0.3);
}

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

body {
  font-family: 'Poppins', sans-serif;
  background: var(--gradient-bg);
  color: var(--text-primary);
  min-height: 100vh;
  padding: clamp(1.5rem, 5vw, 2.5rem);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

.container {
  max-width: clamp(600px, 90%, 800px);
  margin: 0 auto;
  width: 100%;
}

.header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: clamp(2rem, 4vw, 2.5rem);
}

.header h1 {
  font-size: clamp(1.8rem, 5.5vw, 2.5rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  transform: translateY(20px);
  opacity: 0;
  animation: fadeInUp 0.8s ease forwards;
}

.btn-back {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  text-decoration: none;
  color: var(--primary-color);
  font-weight: 700;
  font-size: clamp(0.9rem, 2.5vw, 1.1rem);
  transition: var(--transition);
}

.btn-back i {
  font-size: clamp(1.2rem, 3vw, 1.4rem);
  transition: var(--transition);
}

.btn-back:hover {
  color: var(--primary-hover);
  transform: translateX(-0.3rem);
  text-shadow: var(--glow-effect);
}

.btn-back:hover i {
  transform: scale(1.15);
}

.btn-back:focus-visible {
  outline: var(--focus-ring);
  outline-offset: 3px;
}

.card {
  background: var(--card-background);
  backdrop-filter: blur(20px);
  border: 2px solid var(--border-color);
  border-radius: var(--border-radius);
  padding: clamp(2rem, 5vw, 2.5rem);
  box-shadow: var(--shadow);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
  transform: translateY(20px);
  opacity: 0;
  animation: fadeInUp 0.8s ease 0.2s forwards;
}

.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 6px;
  background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
  opacity: 0.9;
}

.card:hover {
  transform: translateY(-8px) scale(1.02);
  box-shadow: var(--shadow-hover);
  border-color: var(--accent-color);
}

.logo {
  text-align: center;
  margin-bottom: 2.5rem;
}

.logo img {
  max-width: clamp(180px, 30vw, 220px);
  height: auto;
  display: block;
  margin: 0 auto;
  transition: var(--transition);
}

.logo img:hover {
  transform: scale(1.08);
  filter: drop-shadow(var(--glow-effect));
}

.loader {
  display: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 140px;
  animation: fadeIn 0.5s ease;
}

.loader.active {
  display: flex;
}

.loader i {
  font-size: clamp(2.5rem, 6vw, 3rem);
  color: var(--primary-color);
  animation: spin 1.2s linear infinite;
}

.loader p {
  margin-top: 1.2rem;
  font-size: clamp(0.8rem, 2vw, 0.95rem);
  color: var(--text-secondary);
  font-weight: 400;
}

.plan-info {
  background: rgba(47, 226, 123, 0.2);
  padding: clamp(1rem, 2.5vw, 1.5rem);
  border-radius: 12px;
  margin-bottom: 2rem;
  transform: translateY(20px);
  opacity: 0;
  animation: fadeInUp 0.8s ease 0.4s forwards;
}

.plan-info h2 {
  font-size: clamp(1.4rem, 3.5vw, 1.8rem);
  font-weight: 700;
  margin-bottom: 0.6rem;
  color: var(--text-primary);
}

.plan-info p {
  font-size: clamp(0.9rem, 2.2vw, 1rem);
  color: var(--text-secondary);
  margin-bottom: 0.3rem;
}

.payer-info {
  margin-top: 2rem;
}

.payer-info .form-group {
  position: relative;
  margin-bottom: 1.5rem;
}

.payer-info label {
  display: block;
  font-size: clamp(0.8rem, 2vw, 0.9rem);
  font-weight: 600;
  margin-bottom: 0.6rem;
  color: var(--text-primary);
}

.payer-info input {
  width: 100%;
  padding: clamp(0.7rem, 2vw, 0.9rem) clamp(2rem, 5vw, 2.5rem) clamp(0.7rem, 2vw, 0.9rem) clamp(0.9rem, 2.5vw, 1.1rem);
  border: 1px solid var(--border-color);
  border-radius: 10px;
  font-size: clamp(0.9rem, 2.2vw, 1rem);
  transition: var(--transition);
  background: rgba(247, 250, 252, 0.9);
}

.payer-info input:focus {
  border-color: var(--primary-color);
  box-shadow: var(--focus-ring);
  outline: none;
}

.payer-info input:invalid[aria-invalid="true"] {
  border-color: var(--text-error);
}

.payer-info .form-group i {
  position: absolute;
  right: clamp(0.8rem, 2vw, 1rem);
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-secondary);
  font-size: clamp(0.9rem, 2.2vw, 1rem);
  transition: var(--transition);
}

.payer-info input:focus + i {
  color: var(--primary-color);
}

.payer-info .error-text {
  display: none;
  color: var(--text-error);
  font-size: clamp(0.7rem, 1.8vw, 0.8rem);
  margin-top: 0.3rem;
}

.payer-info input:invalid[aria-invalid="true"] ~ .error-text {
  display: block;
}

.payer-info button {
  width: 100%;
  padding: clamp(0.9rem, 2.2vw, 1.1rem);
  background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
  color: #fff;
  border: none;
  border-radius: 10px;
  font-size: clamp(0.9rem, 2.2vw, 1rem);
  font-weight: 700;
  cursor: pointer;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
  transform: translateY(20px);
  opacity: 0;
  animation: fadeInUp 0.8s ease 0.6s forwards;
}

.payer-info button::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  background: rgba(255, 255, 255, 0.3);
  border-radius: 50%;
  transform: translate(-50%, -50%);
  transition: width 0.5s ease, height 0.5s ease;
}

.payer-info button:hover::after {
  width: 250px;
  height: 250px;
}

.payer-info button:disabled {
  background: #cbd5e0;
  cursor: not-allowed;
  transform: none;
}

.payer-info button:not(:disabled):hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}

.payer-info button:not(:disabled):focus-visible {
  outline: var(--focus-ring);
}

.error-message {
  display: none;
  color: var(--text-error);
  font-size: clamp(0.8rem, 2vw, 0.9rem);
  text-align: center;
  margin-top: 1.2rem;
  animation: fadeIn 0.4s ease;
  background: rgba(229, 62, 62, 0.15);
  padding: 0.8rem;
  border-radius: 8px;
}

.error-message.active {
  display: block;
}

.pix-container {
  display: none;
  margin-top: 2.5rem;
  text-align: center;
  animation: fadeIn 0.6s ease;
  background: rgba(46, 204, 113, 0.1);
  padding: clamp(1.2rem, 3vw, 1.8rem);
  border-radius: 12px;
  transform: translateY(20px);
  opacity: 0;
  animation: fadeInUp 0.8s ease 0.8s forwards;
}

.pix-container.active {
  display: block;
}

.pix-container h3 {
  font-size: clamp(1.2rem, 3.2vw, 1.5rem);
  font-weight: 700;
  margin-bottom: 0.8rem;
  color: var(--text-primary);
}

.pix-container p {
  font-size: clamp(0.8rem, 2vw, 0.95rem);
  color: var(--text-secondary);
  margin: 0.6rem 0;
}

.pix-container img {
  max-width: clamp(200px, 40vw, 240px);
  margin: 1.2rem auto;
  border-radius: 10px;
  box-shadow: var(--shadow);
  border: 2px solid var(--primary-color);
  transition: var(--transition);
}

.pix-container img:hover {
  transform: scale(1.03);
  box-shadow: var(--glow-effect);
}

#pix-code {
  font-family: 'Courier New', monospace;
  word-break: break-all;
  background: rgba(247, 250, 252, 0.9);
  padding: clamp(0.8rem, 2vw, 1rem);
  border-radius: 10px;
  margin: 1.2rem auto;
  max-width: 100%;
  font-size: clamp(0.75rem, 1.8vw, 0.85rem);
  border: 1px solid var(--border-color);
  position: relative;
}

#pix-code::after {
  content: '\f0c5';
  font-family: 'boxicons';
  position: absolute;
  top: 0.6rem;
  right: 0.6rem;
  color: var(--primary-color);
  cursor: pointer;
  font-size: clamp(0.9rem, 2.2vw, 1rem);
}

#pix-status {
  font-weight: 700;
  color: var(--primary-color);
  margin-top: 1.2rem;
  animation: pulse 2s infinite;
}

.success-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, rgba(249, 249, 249, 0.9), rgba(227, 227, 227, 0.9));
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 1000;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.4s ease, visibility 0.4s ease;
}

.success-overlay.active {
  opacity: 1;
  visibility: visible;
}

.success-message {
  background: var(--card-background);
  backdrop-filter: blur(20px);
  padding: clamp(1.5rem, 4vw, 2rem);
  border-radius: 12px;
  text-align: center;
  box-shadow: var(--shadow);
  max-width: clamp(350px, 80%, 450px);
  width: 90%;
  transform: translateY(20px);
  opacity: 0;
  animation: fadeInUp 0.8s ease forwards;
}

.success-message i {
  font-size: clamp(3.5rem, 8vw, 4.5rem);
  color: #2ecc71;
  margin-bottom: 1.2rem;
}

.success-message h2 {
  font-size: clamp(1.4rem, 3.5vw, 1.8rem);
  color: #2ecc71;
  margin-bottom: 1.2rem;
}

.success-message p {
  font-size: clamp(0.9rem, 2.2vw, 1rem);
  color: #838383;
}

.coupon-container {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 1.8rem;
  background: var(--card-background);
  backdrop-filter: blur(20px);
  padding: clamp(0.8rem, 2vw, 1rem) clamp(1rem, 2.5vw, 1.5rem);
  border-radius: 12px;
  box-shadow: var(--shadow);
  transition: var(--transition);
}

.coupon-container:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-4px);
}

.coupon-input {
  padding: clamp(0.8rem, 2vw, 1rem) clamp(1rem, 2.5vw, 1.5rem);
  font-size: clamp(0.9rem, 2.2vw, 1rem);
  border: 1px solid var(--border-color);
  border-radius: 10px;
  width: 100%;
  max-width: clamp(200px, 50%, 240px);
  outline: none;
  transition: var(--transition);
  background: rgba(247, 250, 252, 0.9);
}

.coupon-input:focus {
  border-color: #2ecc71;
  box-shadow: var(--focus-ring);
}

.coupon-button {
  border: none;
  cursor: pointer;
  font-size: clamp(1.2rem, 3vw, 1.4rem);
  padding: clamp(0.8rem, 2vw, 1rem);
  border-radius: 10px;
  transition: var(--transition);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.coupon-button.apply {
  background: linear-gradient(90deg, #2ecc71, var(--primary-hover));
  color: #fff;
}

.coupon-button.apply:hover {
  transform: scale(1.1) translateY(-2px);
  box-shadow: var(--glow-effect);
}

.coupon-button.remove {
  background: linear-gradient(90deg, #e74c3c, #c0392b);
  color: #fff;
}

.coupon-button.remove:hover {
  transform: scale(1.1) translateY(-2px);
  box-shadow: var(--glow-effect);
}

.coupon-button::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  background: rgba(255, 255, 255, 0.3);
  border-radius: 50%;
  transform: translate(-50%, -50%);
  transition: width 0.5s ease, height 0.5s ease;
}

.coupon-button:hover::after {
  width: 150px;
  height: 150px;
}

.coupon-message {
  font-size: clamp(0.8rem, 2vw, 0.9rem);
  margin-top: 0.8rem;
  font-weight: 500;
  padding: clamp(0.6rem, 1.5vw, 0.8rem) clamp(0.8rem, 2vw, 1rem);
  border-radius: 8px;
  display: table;
  transition: var(--transition);
}

.coupon-message.error {
  color: #d32f2f;
  background: rgba(253, 236, 234, 0.9);
  border: 1px solid #f5c2c7;
}

.coupon-message.success {
  color: #2e7d32;
  background: rgba(230, 244, 234, 0.9);
  border: 1px solid #a5d6a7;
}

.btn-primary {
  background: linear-gradient(90deg, #2ecc71, var(--primary-hover));
  color: #fff;
  border: none;
  padding: clamp(0.9rem, 2.2vw, 1.1rem) clamp(1.5rem, 4vw, 2rem);
  border-radius: 10px;
  cursor: pointer;
  font-size: clamp(0.9rem, 2.2vw, 1rem);
  font-weight: 700;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.btn-primary:hover {
  transform: scale(1.1) translateY(-4px);
  box-shadow: var(--glow-effect);
}

.btn-primary::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  background: rgba(255, 255, 255, 0.3);
  border-radius: 50%;
  transform: translate(-50%, -50%);
  transition: width 0.5s ease, height 0.5s ease;
}

.btn-primary:hover::after {
  width: 250px;
  height: 250px;
}

@keyframes fadeInUp {
  to {
    transform: translateY(0);
    opacity: 1;
  }
}

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

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

@media (max-width: 480px) {
  body {
    padding: clamp(1rem, 3vw, 1.5rem);
  }

  .container {
    max-width: 100%;
  }

  .header h1 {
    font-size: clamp(1.4rem, 4vw, 1.8rem);
  }

  .btn-back {
    font-size: clamp(0.8rem, 2vw, 0.9rem);
  }

  .card {
    padding: clamp(1.5rem, 4vw, 2rem);
  }

  .logo img {
    max-width: clamp(140px, 25vw, 180px);
  }

  .payer-info input {
    padding: clamp(0.6rem, 1.8vw, 0.8rem) clamp(1.8rem, 4.5vw, 2rem) clamp(0.6rem, 1.8vw, 0.8rem) clamp(0.8rem, 2vw, 1rem);
    font-size: clamp(0.8rem, 2vw, 0.9rem);
  }

  .payer-info button {
    padding: clamp(0.8rem, 2vw, 1rem);
    font-size: clamp(0.8rem, 2vw, 0.9rem);
  }

  .pix-container img {
    max-width: clamp(160px, 35vw, 200px);
  }

  #pix-code {
    font-size: clamp(0.7rem, 1.6vw, 0.8rem);
  }
}