body {
  font-family: 'Istok Web', Arial, sans-serif;
  color: #fff;
  padding: 0 clamp(24px, 6vw, 64px);
}

main {
  padding: clamp(120px, 18vh, 160px) 0 clamp(72px, 12vh, 120px);
  display: flex;
  align-items: center;
  justify-content: center;
}

.registration-card {
  width: 100%;
  max-width: var(--container-width);
  margin: 0 auto;
  background: rgba(0, 0, 0, 0.28);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: 12px;
  padding: clamp(28px, 4vw, 56px) clamp(22px, 6vw, 64px);
  box-shadow: 0 28px 60px rgba(0, 0, 0, 0.32);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
}

.registration-card h1 {
  text-transform: uppercase;
  letter-spacing: 2px;
  text-align: center;
  margin: 0 0 24px;
}

.intro {
  font-size: 16px;
  line-height: 1.6;
  max-width: 640px;
  margin: 0 auto 32px;
}

.intro a {
  color: #8fd18a;
  text-decoration: underline;
}

.registration-form {
  width: 100%;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.registration-form .spacing-container {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.form-section {
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 12px;
  padding: 24px;
  background: rgba(14, 38, 20, 0.55);
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.04);
  width: 100%;
}

.form-section legend {
  padding: 0 10px;
  margin-left: -10px;
  font-size: 0.95rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: rgba(255, 255, 255, 0.75);
}

.form-section--tickets {
  display: flex;
  flex-direction: column;
  gap: 24px;
  align-items: stretch;
}

.ticket-card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: clamp(20px, 4vw, 32px);
}

.ticket-card {
  display: flex;
  flex-direction: column;
  gap: 14px;
  padding: clamp(34px, 5vw, 44px) clamp(22px, 4vw, 32px) clamp(22px, 4vw, 32px);
  border-radius: 16px;
  background: #0b2616;
  box-shadow: 0 18px 28px rgba(2, 10, 6, 0.4), inset 0 0 0 1px rgba(126, 217, 87, 0.1);
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
  position: relative;
}

.ticket-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 26px 42px rgba(2, 10, 6, 0.45), inset 0 0 0 1px rgba(126, 217, 87, 0.32);
}

.ticket-card__badge {
  padding: 4px 12px;
  border-radius: 999px;
  background: #135c2f;
  color: #98f29d;
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  position: absolute;
  top: clamp(12px, 3vw, 20px);
  left: clamp(18px, 4vw, 28px);
  pointer-events: none;
}

.ticket-card__title {
  margin: 8px 0 0;
  font-size: clamp(1.35rem, 2.6vw, 1.65rem);
}

.ticket-card__subtitle {
  margin: 0;
  font-size: 0.95rem;
  color: rgba(255, 255, 255, 0.82);
}

.ticket-card__price {
  margin: 0;
  display: flex;
  align-items: baseline;
  gap: 6px;
  font-size: clamp(1.45rem, 3vw, 1.8rem);
  font-weight: 700;
  color: #ffffff;
}

.ticket-card__price-currency {
  font-size: 1rem;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.75);
}

.ticket-card__price-note {
  font-size: 0.95rem;
  font-weight: 600;
  color: rgba(255, 255, 255, 0.75);
}

.ticket-card__note {
  margin: 0;
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.75);
}

.ticket-card__quantity {
  margin-top: auto;
  padding-top: 18px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  flex-wrap: wrap;
}

.ticket-card__quantity-label {
  font-size: 0.9rem;
  letter-spacing: 0.02em;
  color: rgba(255, 255, 255, 0.9);
}

.ticket-card__quantity-label span {
  display: block;
  font-size: 0.75rem;
  font-weight: 400;
  letter-spacing: normal;
  color: rgba(255, 255, 255, 0.65);
}

.form-section--summary {
  padding: 28px 24px 24px;
  background: #0f2f1b;
  box-shadow: 0 14px 32px rgba(1, 8, 4, 0.4), inset 0 0 0 1px rgba(126, 217, 87, 0.22);
  margin-top: 12px;
}

.ticket-summary__line {
  margin: 0 0 8px;
  font-size: 0.95rem;
}

.ticket-summary__total {
  margin: 0;
  font-size: 1.1rem;
  font-weight: 700;
  color: #ffffff;
}

.form-section--summary legend {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  border: 0;
  clip: rect(0 0 0 0);
  overflow: hidden;
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 20px 24px;
}

.form-field {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.form-field--checkbox {
  flex-direction: row;
  align-items: flex-start;
  gap: 12px;
}

.form-field--hidden {
  display: none !important;
}

.form-field label {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: rgba(255, 255, 255, 0.85);
}

.form-field--checkbox label {
  text-transform: none;
  letter-spacing: 0;
  font-size: 1rem;
  line-height: 1.5;
}

.form-field--checkbox input[type="checkbox"] {
  width: 20px;
  height: 20px;
  min-width: 20px;
  margin-top: 2px;
  accent-color: #7ed957;
}

.form-section > .form-field--checkbox {
  margin-top: 12px;
}

.required-tag {
  color: #7ed957;
  margin-left: 4px;
}

.form-field input,
.form-field select,
.form-field textarea {
  width: 100%;
  padding: 12px 14px;
  border-radius: 8px;
  border: none;
  background: rgba(255, 255, 255, 0.92);
  color: #1c1c1c;
  font-size: 0.95rem;
  box-shadow: inset 0 0 0 1px rgba(0, 0, 0, 0.08);
  transition: box-shadow 0.15s ease, transform 0.15s ease;
  resize: vertical;
}

.quantity-control {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 6px;
  border-radius: 14px;
  background: #12301c;
  box-shadow: inset 0 0 0 1px rgba(126, 217, 87, 0.2);
}

.quantity-control__input {
  text-align: center;
  font-weight: 600;
  font-size: 1.1rem;
  -moz-appearance: textfield;
  width: 54px !important;
  min-width: 54px !important;
  max-width: 54px !important;
  flex: 0 0 54px !important;
  padding-inline: 0;
  background: transparent;
  color: #f3ffe5;
  border: none;
  cursor: default;
}

.quantity-control__input::-webkit-outer-spin-button,
.quantity-control__input::-webkit-inner-spin-button {
  -webkit-appearance: none;
  margin: 0;
}

.quantity-control__button {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  border: none;
  background: #1c4a2d;
  color: #f3ffe5;
  font-size: 1.4rem;
  font-weight: 700;
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.15s ease, background-color 0.15s ease;
}

.quantity-control__button:hover {
  background: #226639;
  box-shadow: 0 8px 16px rgba(3, 13, 7, 0.35);
  transform: translateY(-1px);
}

.quantity-control__button:active {
  transform: translateY(0);
  box-shadow: none;
}

.quantity-control__button:focus-visible {
  outline: 2px solid rgba(126, 217, 87, 0.8);
  outline-offset: 3px;
}

.quantity-row {
  display: flex;
  align-items: flex-end;
  gap: 18px;
  flex-wrap: wrap;
}

.quantity-row__controls {
  display: flex;
  flex-direction: column;
  gap: 10px;
  min-width: 0;
}

.ticket-total-inline {
  display: flex;
  align-items: baseline;
  gap: 6px;
  color: #ffffff;
  font-size: 0.9rem;
  margin-left: auto;
  white-space: nowrap;
}

.form-field textarea {
  min-height: 112px;
}

.form-field input:focus-visible,
.form-field select:focus-visible,
.form-field textarea:focus-visible {
  outline: 2px solid #7ed957;
  outline-offset: 1px;
  box-shadow: inset 0 0 0 1px rgba(6, 114, 37, 0.4);
}

.form-field input:invalid,
.form-field select:invalid,
.form-field textarea:invalid {
  box-shadow: inset 0 0 0 1px rgba(223, 70, 70, 0.55);
}

.form-field small {
  font-size: 0.75rem;
  letter-spacing: 0.03em;
  color: rgba(255, 255, 255, 0.65);
}

.form-note {
  margin: 10px;
  font-size: 0.85rem;
  line-height: 1.5;
  color: rgba(255, 255, 255, 0.75);
}

.form-actions {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.form-actions button {
  padding: 15px;
  border-radius: 999px;
  border: none;
  background: linear-gradient(135deg, #30b44a 0%, #0f8332 100%);
  color: #051606;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}


.form-actions button:hover {
  transform: translateY(-1px);
  box-shadow: 0 12px 24px rgba(0, 0, 0, 0.25);
}

.form-error {
  margin-top: 12px;
  font-size: 0.9rem;
  font-weight: 600;
  color: #ffb4a2;
}

.form-feedback {
  margin-top: 24px;
  padding: 16px;
  border-radius: 12px;
  background: rgba(14, 77, 31, 0.8);
  font-size: 0.9rem;
  line-height: 1.6;
}

.form-feedback.error {
  background: rgba(120, 27, 27, 0.85);
}

.invoice-success-modal {
  position: fixed;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 32px 16px;
  background: rgba(0, 0, 0, 0.65);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  z-index: 1200;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s ease-in-out;
}

.invoice-success-modal.is-visible {
  opacity: 1;
  pointer-events: auto;
}

.invoice-success-modal[hidden] {
  display: none;
}

.invoice-success-modal__dialog {
  max-width: 480px;
  width: 100%;
  padding: 32px 28px;
  background: rgba(0, 0, 0, 0.28);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 16px;
  box-shadow: 0 28px 60px rgba(0, 0, 0, 0.32);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  text-align: center;
  color: #f8f9fb;
}

.invoice-success-modal__title {
  margin: 0 0 12px;
  font-size: 1.5rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.invoice-success-modal__body,
.invoice-success-modal__countdown {
  margin: 0 0 12px;
  font-size: 1rem;
  line-height: 1.6;
  color: rgba(255, 255, 255, 0.85);
}

.invoice-success-modal__countdown span {
  font-weight: 700;
  color: #7ed957;
}

.invoice-success-modal__button {
  margin-top: 8px;
  padding: 12px 20px;
  border: none;
  border-radius: 999px;
  background: linear-gradient(135deg, #30b44a 0%, #0f8332 100%);
  color: #051606;
  font-weight: 700;
  font-size: 0.95rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.invoice-success-modal__button:hover {
  transform: translateY(-1px);
  box-shadow: 0 12px 24px rgba(0, 0, 0, 0.25);
}

.invoice-success-modal__button:focus-visible {
  outline: 2px solid rgba(255, 255, 255, 0.6);
  outline-offset: 4px;
}

.attendee-list {
  display: flex;
  flex-direction: column;
}

.attendee-entry {
  display: flex;
  flex-direction: column;
  gap: 16px;
  padding: 20px;
  border-radius: 10px;
  background: rgba(13, 35, 19, 0.5);
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.05);
}

.attendee-entry:not(:last-child) {
  margin-bottom: 16px;
}

.attendee-meta {
  font-size: 0.9rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.65);
}

@media (max-width: 600px) {
  .registration-card {
    padding: 32px 20px;
  }

  .form-section {
    padding: 20px;
  }

  .form-section legend {
    margin-left: 0;
  }

  .form-grid {
    grid-template-columns: 1fr;
  }

  .ticket-card-grid {
    grid-template-columns: 1fr;
  }

  .attendee-entry {
    padding: 16px;
  }
}

@media (max-width: 480px) {
  .registration-card {
    max-width: 100%;
  }
}