.upgrade-hero {
  padding: 150px 0 72px;
  background: var(--bg-dark);
  color: #fff;
  position: relative;
  overflow: hidden;
}

.upgrade-hero::before {
  content: '';
  position: absolute;
  inset: -30% -10% auto auto;
  width: 560px;
  height: 560px;
  background: var(--primary);
  opacity: .13;
  filter: blur(150px);
  border-radius: 50%;
}

.upgrade-hero .container {
  position: relative;
  z-index: 2;
}

.upgrade-kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  border-radius: var(--radius-full);
  border: 1px solid rgba(255,255,255,.16);
  background: rgba(255,255,255,.08);
  color: #ffb078;
  font-weight: 800;
  font-size: .82rem;
  margin-bottom: 18px;
}

.upgrade-hero h1 {
  color: #fff;
  max-width: 820px;
  font-size: clamp(2.35rem, 5vw, 4rem);
  line-height: 1.05;
  margin-bottom: 18px;
}

.upgrade-hero p {
  color: rgba(255,255,255,.72);
  max-width: 700px;
  font-size: 1.12rem;
  line-height: 1.75;
}

.upgrade-proof {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
  margin-top: 34px;
  max-width: 940px;
}

.upgrade-proof div {
  border: 1px solid rgba(255,255,255,.14);
  background: rgba(255,255,255,.08);
  border-radius: 16px;
  padding: 16px;
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
}

.upgrade-proof strong {
  display: block;
  color: #fff;
  font-family: 'Outfit', sans-serif;
  font-size: 1.12rem;
  margin-bottom: 6px;
}

.upgrade-proof span {
  color: rgba(255,255,255,.68);
  font-size: .84rem;
  font-weight: 700;
}

.upgrade-layout {
  padding: 72px 0 90px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 360px;
  gap: 34px;
  align-items: start;
}

.upgrade-card,
.upgrade-side-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
}

.upgrade-card {
  padding: 38px;
}

.upgrade-card h2 {
  font-size: clamp(1.7rem, 3vw, 2.35rem);
  margin-bottom: 10px;
}

.upgrade-card > p {
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 26px;
}

.upgrade-success,
.upgrade-form-alert {
  margin-bottom: 20px;
  border-radius: 14px;
  padding: 15px 16px;
  font-weight: 800;
}

.upgrade-success {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  border: 1px solid rgba(16, 185, 129, .24);
  background: #ECFDF5;
  color: #065F46;
}

.upgrade-success[hidden],
.upgrade-form-alert[hidden] {
  display: none;
}

.upgrade-success i {
  margin-top: 3px;
}

.upgrade-success strong,
.upgrade-success span,
.upgrade-success small {
  display: block;
}

.upgrade-success span {
  margin-top: 4px;
  line-height: 1.55;
  font-weight: 600;
}

.upgrade-success small {
  margin-top: 6px;
  color: #047857;
}

.upgrade-form-alert {
  border: 1px solid rgba(220, 38, 38, .25);
  background: #FEF2F2;
  color: #991B1B;
  line-height: 1.5;
}

.upgrade-form-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.upgrade-field {
  display: flex;
  flex-direction: column;
  gap: 7px;
}

.upgrade-field.full {
  grid-column: 1 / -1;
}

.upgrade-field label {
  color: var(--text-dark);
  font-weight: 800;
  font-size: .92rem;
}

.upgrade-field input,
.upgrade-field select,
.upgrade-field textarea {
  width: 100%;
  border: 1.5px solid var(--border-strong);
  border-radius: var(--radius-sm);
  background: var(--bg-main);
  color: var(--text-dark);
  font-family: 'Inter', sans-serif;
  font-size: 1rem;
  padding: 14px 16px;
  outline: none;
  transition: var(--transition-base);
}

.upgrade-field textarea {
  min-height: 128px;
  resize: vertical;
}

.upgrade-field input:focus,
.upgrade-field select:focus,
.upgrade-field textarea:focus {
  border-color: var(--primary);
  background: #fff;
  box-shadow: 0 0 0 3px var(--primary-glow);
}

.upgrade-has-error input,
.upgrade-has-error select,
.upgrade-has-error textarea,
.upgrade-check.upgrade-has-error {
  border-color: #DC2626;
  box-shadow: 0 0 0 3px rgba(220, 38, 38, .12);
}

.upgrade-options {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}

.upgrade-check {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: var(--bg-main);
  padding: 14px;
  font-weight: 800;
  color: var(--text-dark);
  cursor: pointer;
}

.upgrade-check input {
  margin-top: 3px;
  accent-color: var(--primary);
}

.upgrade-check-wide {
  grid-column: 1 / -1;
}

.upgrade-submit {
  grid-column: 1 / -1;
  display: flex;
  justify-content: flex-end;
  margin-top: 10px;
}

.upgrade-submit button:disabled {
  cursor: wait;
  opacity: .72;
}

.upgrade-side-card {
  padding: 28px;
  position: sticky;
  top: 100px;
}

.upgrade-side-card h3 {
  font-size: 1.35rem;
  margin-bottom: 14px;
}

.upgrade-side-list {
  display: grid;
  gap: 13px;
  margin-top: 18px;
}

.upgrade-side-list div {
  display: flex;
  gap: 10px;
  color: var(--text-main);
  line-height: 1.55;
}

.upgrade-side-list i {
  color: var(--secondary);
  margin-top: 4px;
}

.upgrade-toast {
  position: fixed;
  right: 24px;
  bottom: 24px;
  z-index: 1000;
  padding: 16px 20px;
  border-radius: 14px;
  background: #101828;
  color: #fff;
  box-shadow: 0 18px 46px rgba(15,23,42,.24);
  display: none;
  align-items: center;
  gap: 10px;
  font-weight: 800;
}

.upgrade-toast.show {
  display: flex;
}

@media (max-width: 992px) {
  .upgrade-layout,
  .upgrade-form-grid,
  .upgrade-options {
    grid-template-columns: 1fr;
  }

  .upgrade-proof {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .upgrade-side-card {
    position: static;
  }
}

@media (max-width: 560px) {
  .upgrade-card {
    padding: 24px;
  }

  .upgrade-proof {
    grid-template-columns: 1fr;
  }

  .upgrade-submit .btn {
    width: 100%;
    justify-content: center;
  }
}