:root {
  --igem-dark-green: #006B35;
  --igem-green: #138A45;
  --igem-medium-green: #28B85C;
  --igem-lime: #C9F500;
  --igem-blue: #0072BC;
  --igem-soft-green: #F0FAF0;
  --igem-pale-green: #EAF8E9;
  --igem-border: #B7D5B8;
  --igem-input-border: #D9E2DA;
  --igem-text: #163A27;
  --igem-muted: #6C786F;
  --igem-error: #E54848;
  --igem-warning: #F4A522;
  --igem-white: #FFFFFF;
  --igem-background: #F6F9F7;
  --registration-bg: url("../assets/bg-7.png");
  --shadow: 0 14px 42px rgba(18, 65, 38, .12);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  color: var(--igem-text);
  background: #edf3ef;
  font-family: "Poppins", "Segoe UI", Arial, sans-serif;
  font-size: 15px;
}

@media (min-width: 1200px) {
  body::before {
    position: fixed;
    z-index: 0;
    inset: 0;
    background: var(--registration-bg) center center/cover no-repeat;
    content: "";
    pointer-events: none;
  }
}

button, input, select { font: inherit; }

.registration-page {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(390px, 35%) minmax(0, 65%);
  width: 100%;
  min-height: 100vh;
  margin: 0;
  overflow-x: clip;
  background: transparent;
}

.registration-visual {
  position: relative;
  min-height: 100vh;
  background: transparent;
}

.visual-inner {
  position: sticky;
  top: 0;
  z-index: 1;
  display: flex;
  min-height: 100vh;
  flex-direction: column;
  padding: clamp(32px, 3.8vw, 64px) clamp(26px, 2.8vw, 48px);
}

.igem-logo {
  width: min(100%, 270px);
  height: auto;
  object-fit: contain;
  object-position: left top;
  filter: drop-shadow(0 1px 9px rgba(255,255,255,.72));
}

.event-facts { margin-top: clamp(26px, 3.8vh, 44px); }

.event-fact {
    display: flex;
    align-items: center;
    gap: 14px;
    margin-bottom: 16px;
    /*color: var(--igem-dark-green);*/
    color: white;
    font-size: clamp(15px, 1.05vw, 18px);
    font-weight: 700;
    line-height: 1.25;
}

/*.event-fact > span:last-child {
  text-shadow: 0 1px 1px rgba(255,255,255,.95), 0 0 10px rgba(255,255,255,.85), 0 0 20px rgba(255,255,255,.55);
}*/
    .event-fact > span:last-child {
        text-shadow: 0 1px 1px rgba(0,0,0,.95), 0 0 10px rgba(0,0,0,.85), 0 0 20px rgba(0,0,0,.55);
    }
.fact-icon {
  display: grid;
  width: 42px;
  height: 42px;
  flex: 0 0 42px;
  place-items: center;
  border-radius: 50%;
  color: white;
  background: #83cc35;
  font-size: 21px;
}

.fact-svg {
  display: block;
  width: 21px;
  height: 21px;
  object-fit: contain;
}

.fact-svg-location {
  width: 18px;
  height: 27px;
}

.event-copy {
  max-width: 520px;
  margin-top: clamp(10px, 1.5vh, 18px);
  padding: 17px 19px;
  border: 1px solid rgba(255,255,255,.55);
  border-radius: 16px;
  background: rgba(255,255,255,.78);
  box-shadow: 0 12px 34px rgba(10, 63, 34, .1);
  backdrop-filter: blur(9px);
  -webkit-backdrop-filter: blur(9px);
}

.event-copy h1 {
  margin: 0 0 13px;
  color: var(--igem-dark-green);
  font-size: clamp(21px, 1.38vw, 27px);
  font-weight: 800;
  line-height: 1.35;
}

.event-copy h1 span { color: #0cbd5c; }

.event-copy p {
  max-width: 490px;
  margin: 0;
  color: #173123;
  font-family: "Poppins", "Segoe UI", Arial, sans-serif;
  font-size: clamp(13px, .82vw, 15px);
  line-height: 1.6;
  text-align: left;
}

.registration-content {
  display: flex;
  align-items: flex-start;
  justify-content: center;
  min-width: 0;
  min-height: 100vh;
  padding: clamp(34px, 3.8vw, 64px) clamp(22px, 3vw, 54px);
  background: transparent;
}

.registration-card {
  width: 100%;
  min-width: 0;
  max-width: 960px;
  padding: clamp(30px, 2.7vw, 46px) clamp(28px, 3vw, 50px) clamp(34px, 2.8vw, 48px);
  border: 1.5px solid rgba(41, 94, 51, .78);
  border-radius: 14px;
  background: rgba(255,255,255,.98);
  box-shadow: var(--shadow);
}

.section-heading {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 25px;
}

.section-heading h2 {
  margin: 0;
  color: var(--igem-blue);
  font-size: clamp(19px, 1.2vw, 23px);
  font-weight: 800;
}

.section-heading h2 span { margin-right: 3px; }

.section-icon {
  display: grid;
  width: 38px;
  height: 38px;
  flex: 0 0 38px;
  place-items: center;
  border: 3px solid #83cd3a;
  border-radius: 8px;
  color: #83cd3a;
  font-size: 22px;
}

.section-svg {
  display: block;
  width: 23px;
  height: 23px;
  object-fit: contain;
}

.form-label {
  margin-bottom: 8px;
  color: #294f2d;
  font-size: 13px;
  font-weight: 800;
}

.required::after {
  margin-left: 3px;
  color: var(--igem-error);
  content: "*";
}

.form-control,
.form-select,
.input-group-text {
  min-height: 44px;
  border-color: var(--igem-input-border);
  color: var(--igem-text);
  background-color: white;
  font-size: 14px;
}

.form-control,
.form-select { border-radius: 8px; }

.form-control::placeholder { color: #9ba29e; }

.form-select { color: var(--igem-muted); }
.form-select:valid { color: var(--igem-text); }

.form-control:focus,
.form-select:focus,
.quantity-button:focus-visible,
.participant-toggle:focus-visible,
.btn:focus-visible {
  border-color: var(--igem-green);
  outline: 3px solid rgba(19, 138, 69, .22);
  outline-offset: 2px;
  box-shadow: none;
}

.input-with-icon .input-group-text {
  padding-right: 4px;
  border-right: 0;
  border-radius: 8px 0 0 8px;
  color: #9ba29e;
  background: white;
}

.input-with-icon .form-control {
  border-left: 0;
  border-radius: 0 8px 8px 0 !important;
}

.input-with-icon:focus-within .input-group-text { border-color: var(--igem-green); }

.is-invalid,
.was-validated .form-control:invalid,
.was-validated .form-select:invalid { border-color: var(--igem-error) !important; }

.invalid-feedback { font-size: 12px; }

.info-row { margin-top: 10px !important; }

.information-banner {
  display: flex;
  min-width: 0;
  max-width: 100%;
  align-items: center;
  gap: 14px;
  padding: 11px 16px;
  border: 1px solid #ccdbcc;
  border-radius: 14px;
  color: #55765a;
  background: #edf5ed;
}

.information-banner > i {
  flex: 0 0 auto;
  font-size: 24px;
}

.information-banner p {
  width: 100%;
  min-width: 0;
  margin: 0;
  font-family: "Poppins", "Segoe UI", Arial, sans-serif;
  font-size: 12.5px;
  line-height: 1.45;
  overflow-wrap: anywhere;
}

.quantity-selector {
  display: grid;
  grid-template-columns: 56px minmax(74px, 140px) 56px;
  width: max-content;
  max-width: 100%;
  overflow: hidden;
  border: 1px solid var(--igem-input-border);
  border-radius: 8px;
}

.quantity-selector input {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
}

.quantity-button,
.quantity-selector output {
  display: grid;
  min-height: 44px;
  place-items: center;
  border: 0;
  color: var(--igem-dark-green);
  background: white;
  font-weight: 800;
}

.quantity-button:first-child { border-right: 1px solid var(--igem-input-border); }
.quantity-button:nth-of-type(2) { border-left: 1px solid var(--igem-input-border); }
.quantity-button:hover:not(:disabled) { background: var(--igem-pale-green); }
.quantity-button:disabled { color: #a8b3ab; cursor: not-allowed; }

.btn {
  min-height: 44px;
  border-radius: 10px;
  font-weight: 800;
  transition: transform .18s ease, box-shadow .18s ease, background-color .18s ease;
}

.btn:hover { transform: translateY(-1px); }

.btn-submit {
  padding: 11px 24px;
  border: 1px solid var(--igem-lime);
  color: #244711;
  background: var(--igem-lime);
}

.btn-submit:hover {
  color: #183407;
  background: #d5ff08;
  box-shadow: 0 7px 18px rgba(149, 183, 0, .2);
}

.participant-section[hidden] { display: none; }

.participant-section.is-revealing {
  animation: reveal-section .45s ease both;
}

@keyframes reveal-section {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: translateY(0); }
}

.section-divider {
  height: 1px;
  margin: 22px 0 26px;
  background: #d8ded9;
}

.participant-heading { margin-bottom: 22px; }

.participant-accordion {
  display: grid;
  gap: 12px;
}

.participant-item {
  overflow: hidden;
  border: 1.5px solid #9abd96;
  border-radius: 9px;
  background: var(--igem-soft-green);
}

.participant-header { margin: 0; }

.participant-toggle {
  display: flex;
  width: 100%;
  min-height: 46px;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 8px 16px;
  border: 0;
  color: var(--igem-blue);
  background: transparent;
  text-align: left;
}

.participant-toggle:hover { background: rgba(255,255,255,.35); }

.participant-title-wrap {
  display: flex;
  min-width: 0;
  align-items: center;
  flex-wrap: wrap;
  gap: 9px;
}

.participant-title {
  font-size: 17px;
  font-weight: 800;
}

.status-badge,
.primary-badge {
  display: inline-flex;
  min-height: 24px;
  align-items: center;
  padding: 4px 9px;
  border-radius: 8px;
  font-size: 11px;
  font-weight: 800;
  line-height: 1;
}

.primary-badge {
  color: #315679;
  background: #dcefff;
}

.status-pending {
  color: #b66f00;
  background: #fff0c5;
}

.status-complete {
  color: #08703a;
  background: #d5f4df;
}

.accordion-chevron {
  flex: 0 0 auto;
  font-size: 19px;
  transition: transform .25s ease;
}

.participant-toggle[aria-expanded="true"] .accordion-chevron { transform: rotate(180deg); }

.participant-collapse { overflow: hidden; }

.participant-body { padding: 3px 16px 18px; }

.participant-body .form-control,
.participant-body .form-select { background-color: rgba(255,255,255,.92); }

.form-actions {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  margin-top: 34px;
}

.btn-clear {
  min-width: 128px;
  padding: 9px 24px;
  border: 1.5px solid #ff754d;
  color: #f05933;
  background: white;
}

.btn-clear:hover {
  border-color: #e94b25;
  color: #d6411e;
  background: #fff8f5;
}

.btn-submit {
  display: inline-flex;
  min-width: 128px;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

@media (min-width: 1100px) and (min-height: 760px) {
  .registration-content { align-items: center; }
}

@media (max-width: 1199.98px) {
  .registration-page {
    display: block;
    background: var(--igem-background);
  }

  .registration-visual {
    min-height: 280px;
    background: var(--registration-bg) 26% bottom/cover no-repeat;
  }

  .visual-inner {
    position: relative;
    display: grid;
    min-height: 280px;
    grid-template-columns: minmax(145px, 240px) 1fr;
    grid-template-rows: auto 1fr;
    gap: 14px 28px;
    padding: 22px clamp(18px, 4vw, 36px);
  }

  .igem-logo { width: min(100%, 205px); }
  .event-facts { align-self: center; margin: 0; }
  .event-fact { margin-bottom: 10px; font-size: 14px; }
  .fact-icon { width: 38px; height: 38px; flex-basis: 38px; font-size: 20px; }
  .event-copy { grid-column: 1 / -1; margin: 0; }
  .event-copy h1 { margin: 0; font-size: 20px; }
  .event-copy p { display: none; }

  .registration-content {
    min-height: auto;
    padding: 20px 16px 34px;
    background: var(--igem-background);
  }

  .registration-card {
    max-width: 900px;
    padding: 28px 24px 32px;
    border-radius: 14px;
  }
}

@media (max-width: 575.98px) {
  body { font-size: 14px; }

  .registration-visual { min-height: 270px; }

  .visual-inner {
    display: flex;
    min-height: 270px;
    gap: 0;
    padding: 18px 16px;
  }

  .igem-logo { width: 158px; }
  .event-facts { margin-top: 11px; }
  .event-facts { align-self: stretch; }
  .event-fact { gap: 10px; margin-bottom: 7px; font-size: 12.5px; }
  .fact-icon { width: 32px; height: 32px; flex-basis: 32px; font-size: 17px; }
  .event-copy { margin-top: 4px; }
  .event-copy {
    padding: 9px 11px;
    border-radius: 11px;
    background: rgba(255,255,255,.76);
  }
  .event-copy h1 { font-size: 17px; line-height: 1.25; }
  .event-copy p {
    display: block;
    margin-top: 9px;
    font-size: 11.5px;
    line-height: 1.5;
  }

  .registration-content { padding: 12px 8px 24px; }

  .registration-card {
    padding: 24px 14px 28px;
    border-width: 1px;
  }

  .section-heading { gap: 10px; margin-bottom: 21px; }
  .section-icon { width: 36px; height: 36px; flex-basis: 36px; font-size: 20px; }
  .section-heading h2 { font-size: 19px; }
  .general-grid { --bs-gutter-y: 1rem; }
  .general-grid > * { min-width: 0; }
  .info-row { order: 0; margin-top: 4px !important; }

  .information-banner {
    align-items: flex-start;
    gap: 12px;
    padding: 13px 14px;
    border-radius: 12px;
  }

  .information-banner > i { font-size: 23px; }

  .quantity-selector {
    width: 100%;
    grid-template-columns: 52px 1fr 52px;
  }

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

  .btn-clear,
  .btn-submit { width: 100%; }

  .btn-clear { order: 2; }
  .btn-submit { order: 1; justify-content: center; }
  .section-divider { margin: 28px 0; }
  .participant-toggle { padding: 10px 13px; }
  .participant-title { font-size: 17px; }
  .participant-body { padding: 4px 13px 18px; }
  .form-actions { margin-top: 32px; }
}

@media (max-width: 340px) {
  .registration-content { padding-inline: 6px; }
  .registration-card { padding-inline: 13px; }
  .section-heading h2 { font-size: 18px; }
  .participant-title-wrap { gap: 6px; }
  .status-badge, .primary-badge { padding-inline: 7px; font-size: 10px; }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
    scroll-behavior: auto !important;
  }
}