:root {
  --sibup-primary: #2e60a6;
  --sibup-primary-dark: #21497f;
  --sibup-accent: #e7eef8;
  --sibup-surface: #ffffff;
  --sibup-surface-alt: #f5f8fc;
  --sibup-border: rgba(46, 96, 166, 0.16);
  --sibup-text: #18324f;
  --sibup-text-muted: #55708f;
  --sibup-success: #147a52;
  --sibup-error: #b33636;
  --sibup-shadow: 0 18px 44px rgba(18, 42, 77, 0.12);
  --sibup-radius-xl: 28px;
  --sibup-radius-lg: 22px;
  --sibup-radius-md: 16px;
}

.sibup-registration {
  color: var(--sibup-text);
  border-radius: 36px;
  padding: 32px;
}

.sibup-registration__hero {
  display: grid;
  gap: 24px;
  grid-template-columns: minmax(0, 1.7fr) minmax(260px, 0.9fr);
  align-items: start;
  margin-bottom: 28px;
}

.sibup-registration__eyebrow {
  margin: 0 0 10px;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 12px;
  color: var(--sibup-primary);
  font-weight: 700;
}

.sibup-registration__hero h2 {
  margin: 0 0 12px;
  font-size: clamp(30px, 4vw, 46px);
  line-height: 1.05;
}

.sibup-registration__limits {
  display: grid;
  gap: 14px;
}

.sibup-registration__limit-card {
  background: rgba(255, 255, 255, 0.78);
  border: 1px solid rgba(46, 96, 166, 0.18);
  border-radius: var(--sibup-radius-lg);
  padding: 18px 20px;
  backdrop-filter: blur(12px);
}

.sibup-registration__limit-card span {
  display: block;
  margin-bottom: 4px;
  color: var(--sibup-text-muted);
}

.sibup-registration__limit-card strong {
  font-size: 22px;
}

.sibup-registration__tabs {
  display: inline-flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 28px;
}

.sibup-registration__tab {
  border: 0;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.72);
  color: var(--sibup-text);
  cursor: pointer;
  padding: 12px 18px;
  font: inherit;
  font-weight: 700;
  box-shadow: inset 0 0 0 1px rgba(46, 96, 166, 0.12);
  transition: transform 0.2s ease, background 0.2s ease, color 0.2s ease;
}

.sibup-registration__tab.is-active,
.sibup-registration__tab:hover {
  background: var(--sibup-primary);
  color: #fff;
  transform: translateY(-1px);
}

.sibup-registration__day {
  display: none;
}

.sibup-registration__day.is-active {
  display: block;
}

.sibup-registration__slot + .sibup-registration__slot {
  margin-top: 28px;
}

.sibup-registration__training {
  margin-top: 36px;
  padding-top: 32px;
  border-top: 1px solid rgba(46, 96, 166, 0.14);
}

.sibup-registration__training-hero {
  display: grid;
  gap: 20px;
  grid-template-columns: minmax(0, 1.6fr) minmax(240px, 0.8fr);
  align-items: start;
  margin-bottom: 22px;
}

.sibup-registration__training-hero h3 {
  margin: 0 0 12px;
  font-size: clamp(24px, 3vw, 34px);
}

.sibup-registration__training-topic {
  margin: 0;
  line-height: 1.6;
  color: var(--sibup-text-muted);
}

.sibup-registration__training-layout {
  display: grid;
  gap: 22px;
  grid-template-columns: minmax(280px, 0.9fr) minmax(0, 1.1fr);
}

.sibup-registration__training-info,
.sibup-registration__training-form {
  min-width: 0;
}

.sibup-registration__training-info {
  background: rgba(255, 255, 255, 0.88);
  border: 1px solid rgba(46, 96, 166, 0.14);
  border-radius: var(--sibup-radius-xl);
  padding: 22px;
}

.sibup-registration__training-info h4 {
  margin: 0 0 14px;
  font-size: 20px;
}

.sibup-registration__checklist {
  margin: 0;
  padding-left: 20px;
  color: var(--sibup-text-muted);
  line-height: 1.75;
}

.sibup-registration__template-link {
  margin: 18px 0 0;
  line-height: 1.6;
}

.sibup-registration__template-link a {
  color: var(--sibup-primary);
  font-weight: 700;
}

.sibup-registration__slot-header {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: end;
  gap: 10px;
  margin-bottom: 18px;
}

.sibup-registration__slot-header p,
.sibup-registration__slot-header h3 {
  margin: 0;
}

.sibup-registration__slot-header p {
  color: var(--sibup-text-muted);
}

.sibup-registration__slot-header h3 {
  font-size: 26px;
}

.sibup-registration__grid {
  display: grid;
  gap: 20px;
  grid-template-columns: 1fr;
}

.sibup-registration__card {
  display: grid;
  gap: 24px;
  grid-template-columns: minmax(0, 1.35fr) minmax(320px, 0.85fr);
  background: rgba(255, 255, 255, 0.9);
  border: 1px solid rgba(46, 96, 166, 0.14);
  border-radius: var(--sibup-radius-xl);
  padding: 24px;
  box-shadow: 0 14px 34px rgba(22, 49, 86, 0.09);
}

.sibup-registration__card-main {
  min-width: 0;
}

.sibup-registration__card-form {
  min-width: 0;
}

.sibup-registration__card-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 14px;
}

.sibup-registration__badge {
  display: inline-flex;
  align-items: center;
  padding: 7px 12px;
  border-radius: 999px;
  background: var(--sibup-primary);
  color: #fff;
  font-size: 12px;
  font-weight: 700;
}

.sibup-registration__badge--ghost {
  background: var(--sibup-accent);
  color: var(--sibup-primary-dark);
}

.sibup-registration__card h4 {
  margin: 0 0 10px;
  font-size: 23px;
  line-height: 1.2;
}

.sibup-registration__author,
.sibup-registration__participants,
.sibup-registration__description {
  margin: 0 0 12px;
  color: var(--sibup-text-muted);
  line-height: 1.6;
}

.sibup-registration__description {
  display: -webkit-box;
  -webkit-box-orient: vertical;
  overflow: hidden;
  -webkit-line-clamp: 7;
}

.sibup-registration__form {
  display: grid;
  gap: 14px;
  height: 100%;
  align-content: start;
  padding: 18px;
  border: 1px solid rgba(46, 96, 166, 0.1);
  border-radius: 20px;
  background: linear-gradient(180deg, rgba(231, 238, 248, 0.55), rgba(255, 255, 255, 0.92));
}

.sibup-registration__field,
.sibup-registration__field-group {
  display: grid;
  gap: 8px;
  margin: 0;
}

.sibup-registration__field span,
.sibup-registration__field-group legend {
  font-weight: 700;
  font-size: 14px;
}

.sibup-registration__field-hint {
  color: var(--sibup-text-muted);
  font-size: 12px;
  line-height: 1.4;
}

.sibup-registration__field input {
  width: 100%;
  border: 1px solid rgba(46, 96, 166, 0.22);
  border-radius: 14px;
  background: var(--sibup-surface-alt);
  padding: 14px 15px;
  font: inherit;
  color: var(--sibup-text);
  transition: border-color 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.sibup-registration__field input:focus {
  outline: none;
  border-color: var(--sibup-primary);
  background: var(--sibup-surface);
  box-shadow: 0 0 0 4px rgba(46, 96, 166, 0.12);
}

.sibup-registration__field input[type="file"] {
  padding: 12px;
  background: rgba(255, 255, 255, 0.94);
}

.sibup-registration__field-group {
  border: 0;
  padding: 0;
}

.sibup-registration__radio-group {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.sibup-registration__radio-option {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-height: 46px;
  padding: 0 16px;
  border: 1px solid rgba(46, 96, 166, 0.16);
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.9);
  color: var(--sibup-text);
  cursor: pointer;
  transition: border-color 0.2s ease, background 0.2s ease, box-shadow 0.2s ease;
}

.sibup-registration__radio-option:hover {
  border-color: rgba(46, 96, 166, 0.32);
}

.sibup-registration__radio-option:has(input:checked) {
  border-color: var(--sibup-primary);
  background: rgba(46, 96, 166, 0.08);
  box-shadow: 0 0 0 3px rgba(46, 96, 166, 0.08);
}

.sibup-registration__radio-option span {
  font-weight: 600;
}

.sibup-registration__checkbox {
  display: grid;
  grid-template-columns: 18px 1fr;
  gap: 12px;
  align-items: start;
  color: var(--sibup-text-muted);
  font-size: 14px;
  line-height: 1.55;
}

.sibup-registration__checkbox input,
.sibup-registration__field-group input {
  accent-color: var(--sibup-primary);
}

.sibup-registration__submit {
  border: 0;
  border-radius: 16px;
  background: linear-gradient(135deg, var(--sibup-primary) 0%, #4b7fcc 100%);
  color: #fff;
  cursor: pointer;
  font: inherit;
  font-weight: 700;
  padding: 15px 18px;
  transition: transform 0.2s ease, box-shadow 0.2s ease, opacity 0.2s ease;
  box-shadow: 0 14px 26px rgba(46, 96, 166, 0.26);
}

.sibup-registration__submit:hover:not(:disabled) {
  transform: translateY(-1px);
}

.sibup-registration__submit:disabled {
  opacity: 0.7;
  cursor: wait;
}

.sibup-registration__message {
  min-height: 22px;
  margin: 0;
  font-size: 14px;
  font-weight: 600;
}

.sibup-registration__message.is-success {
  color: var(--sibup-success);
}

.sibup-registration__message.is-error {
  color: var(--sibup-error);
}

.sibup-registration-empty {
  padding: 18px 20px;
  border-radius: 18px;
  background: #f7f9fc;
}

@media (max-width: 900px) {
  .sibup-registration {
    border-radius: 28px;
    padding: 22px;
  }

  .sibup-registration__hero {
    grid-template-columns: 1fr;
  }

  .sibup-registration__card {
    grid-template-columns: 1fr;
  }

  .sibup-registration__training-hero,
  .sibup-registration__training-layout {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  .sibup-registration {
    padding: 18px;
  }

  .sibup-registration__card {
    padding: 20px;
  }

  .sibup-registration__slot-header h3 {
    font-size: 22px;
  }
}