:root {
  --reg-ink: #153331;
  --reg-green: #0f766e;
  --reg-green-dark: #103d38;
  --reg-blue: #245b91;
  --reg-gold: #e2b13f;
  --reg-line: #d7e4e2;
  --reg-soft: #f3f8f7;
}

.student-register-page {
  min-height: 100vh;
  margin: 0;
  background: #edf3f2;
  color: var(--reg-ink);
  font-family: 'Cairo', 'Tajawal', system-ui, sans-serif;
  letter-spacing: 0;
}

.student-register-nav {
  height: 70px;
  padding: 0 max(20px, calc((100vw - 1040px) / 2));
  background: #fff;
  border-bottom: 1px solid var(--reg-line);
  display: flex;
  align-items: center;
  justify-content: space-between;
  opacity: 0;
  transform: translateY(-16px);
}

.student-register-ready .student-register-nav {
  animation: register-slide-down .55s ease-out forwards;
}

.student-register-brand,
.student-register-login {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--reg-ink);
  text-decoration: none;
}

.student-register-brand img { object-fit: contain; }

.student-register-login {
  height: 40px;
  padding: 0 14px;
  border: 1px solid #bad3cf;
  border-radius: 6px;
  color: var(--reg-green);
  font-weight: 800;
  transition: color .2s ease, background .2s ease, transform .2s ease;
}

.student-register-login:hover {
  color: #fff;
  background: var(--reg-green);
  transform: translateY(-2px);
}

.student-register-shell {
  width: min(960px, calc(100% - 28px));
  margin: 28px auto 48px;
  background: #fff;
  border: 1px solid var(--reg-line);
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 18px 45px rgba(18, 57, 53, .09);
  opacity: 0;
  transform: translateY(22px);
}

.student-register-ready .student-register-shell {
  animation: register-rise .65s .08s cubic-bezier(.2, .75, .25, 1) forwards;
}

.student-register-head {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 26px;
  background: var(--reg-green-dark);
  color: #fff;
  border-inline-start: 5px solid var(--reg-gold);
}

.student-register-head > span {
  width: 50px;
  height: 50px;
  flex: 0 0 auto;
  display: grid;
  place-items: center;
  background: #fff;
  color: var(--reg-green-dark);
  border-radius: 7px;
  font-size: 1.3rem;
}

.student-register-head small {
  display: block;
  color: #9ed7cf;
  font-size: .72rem;
  font-weight: 800;
  margin-bottom: 2px;
}

.student-register-head h1 {
  margin: 0 0 5px;
  font-size: 1.45rem;
  font-weight: 900;
}

.student-register-head p {
  margin: 0;
  color: #d2e7e3;
  font-size: .86rem;
}

.student-register-alert {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 13px 22px;
  background: #fff0f0;
  color: #a52323;
  border-bottom: 1px solid #efcaca;
  font-weight: 800;
  animation: register-shake-in .45s ease-out;
}

.student-register-form {
  padding: 24px;
  display: grid;
  gap: 18px;
}

.student-register-section {
  padding: 20px;
  border: 1px solid var(--reg-line);
  border-radius: 8px;
  background: #fff;
  opacity: 0;
  transform: translateY(14px);
}

.student-register-ready .student-register-section {
  animation: register-rise .5s ease-out forwards;
}

.student-register-ready .student-register-section--personal { animation-delay: .2s; }
.student-register-ready .student-register-section--education { animation-delay: .3s; }
.student-register-ready .student-register-section--notes { animation-delay: .4s; }

.student-register-section__title {
  display: flex;
  align-items: center;
  gap: 11px;
  padding-bottom: 14px;
  margin-bottom: 17px;
  border-bottom: 1px solid #edf2f1;
}

.student-register-section__title > i {
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;
  border-radius: 7px;
  background: #e5f3f1;
  color: var(--reg-green);
  font-size: 1.05rem;
}

.student-register-section__title > div { display: grid; gap: 2px; }
.student-register-section__title span { font-size: .92rem; font-weight: 900; }
.student-register-section__title small { color: #758683; font-size: .68rem; }

.student-register-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 17px;
}

.student-register-grid label,
.student-register-selection > label {
  display: grid;
  gap: 7px;
  font-size: .8rem;
  font-weight: 800;
}

.student-register-grid__wide { grid-column: 1 / -1; }
.student-register-grid label span small { color: #7b8c89; font-weight: 600; }

.student-register-grid input,
.student-register-selection select,
.student-register-notes textarea {
  width: 100%;
  border: 1px solid #c7d8d5;
  border-radius: 6px;
  background: #fbfdfd;
  color: var(--reg-ink);
  padding: 0 12px;
  font: inherit;
  font-weight: 700;
  outline: 0;
  transition: border-color .2s ease, box-shadow .2s ease, background .2s ease;
}

.student-register-grid input,
.student-register-selection select { height: 46px; }
.student-register-grid input[readonly] { background: #eef4f3; color: #637572; }

.student-register-grid input:focus,
.student-register-selection select:focus,
.student-register-notes textarea:focus {
  border-color: var(--reg-green);
  background: #fff;
  box-shadow: 0 0 0 3px rgba(15, 118, 110, .12);
}

.student-register-fieldset {
  margin: 0 0 18px;
  padding: 0;
  border: 0;
}

.student-register-fieldset legend,
.student-register-selection__label {
  margin-bottom: 10px;
  font-size: .78rem;
  font-weight: 900;
  color: #415a57;
}

.student-register-segments,
.student-register-modes {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 9px;
}

.student-register-segments input,
.student-register-modes input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.student-register-segments label,
.student-register-modes label {
  min-height: 66px;
  padding: 10px;
  border: 1px solid #cbdad8;
  border-radius: 7px;
  background: #fbfdfd;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  color: #506562;
  font-size: .78rem;
  font-weight: 900;
  cursor: pointer;
  transition: border-color .2s ease, color .2s ease, background .2s ease, transform .2s ease;
}

.student-register-segments label:hover,
.student-register-modes label:hover { transform: translateY(-2px); border-color: #8ebbb5; }
.student-register-segments input:focus-visible + label,
.student-register-modes input:focus-visible + label { outline: 3px solid rgba(15, 118, 110, .2); }
.student-register-segments input:checked + label { background: #e8f6f0; border-color: #66b18b; color: #146940; }
.student-register-modes input:checked + label { background: #e7f1fb; border-color: #74a6d4; color: #1e5689; }

.student-register-selection {
  padding: 16px;
  border: 1px solid #d4e3e1;
  border-radius: 7px;
  background: var(--reg-soft);
  animation: register-selection-in .28s ease-out;
}

.student-register-selection[hidden] { display: none; }
.student-register-selection > small { display: block; margin-top: 9px; color: #5d7773; font-size: .7rem; }

.student-register-check-grid,
.student-register-riwayat-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 9px;
}

.student-register-check-grid label,
.student-register-riwayat-group label {
  min-height: 40px;
  padding: 8px 10px;
  border: 1px solid #ceddda;
  border-radius: 6px;
  background: #fff;
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: .75rem;
  font-weight: 700;
  cursor: pointer;
}

.student-register-check-grid input,
.student-register-riwayat-group input { accent-color: var(--reg-green); }

.student-register-riwayat-group {
  padding: 11px;
  border: 1px solid #d2e0de;
  border-radius: 7px;
  background: #fff;
  display: grid;
  gap: 8px;
}

.student-register-riwayat-group strong { font-size: .76rem; color: var(--reg-green-dark); }

.student-register-notes textarea {
  min-height: 100px;
  padding: 12px;
  resize: vertical;
}

.student-register-data-alert,
.student-register-invite {
  display: flex;
  align-items: center;
  gap: 9px;
  border-radius: 6px;
  padding: 11px 13px;
  font-size: .8rem;
}

.student-register-data-alert { background: #fff5dc; color: #805c08; border: 1px solid #ecd28e; }
.student-register-invite { background: #ecf9f3; color: #176a43; border: 1px solid #bfe5ce; }

.student-register-actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  opacity: 0;
}

.student-register-ready .student-register-actions { animation: register-rise .5s .48s ease-out forwards; }
.student-register-actions small { color: #6b7d7a; font-size: .7rem; }

.student-register-submit {
  height: 48px;
  min-width: 180px;
  padding: 0 24px;
  border: 0;
  border-radius: 6px;
  background: var(--reg-green);
  color: #fff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-weight: 900;
  transition: background .2s ease, transform .2s ease, box-shadow .2s ease;
}

.student-register-submit:hover:not(:disabled) {
  background: #0b625c;
  transform: translateY(-2px);
  box-shadow: 0 8px 18px rgba(15, 118, 110, .22);
}

.student-register-submit:disabled { background: #9baaa8; cursor: not-allowed; }

@keyframes register-slide-down { to { opacity: 1; transform: translateY(0); } }
@keyframes register-rise { to { opacity: 1; transform: translateY(0); } }
@keyframes register-selection-in { from { opacity: 0; transform: translateY(7px); } to { opacity: 1; transform: translateY(0); } }
@keyframes register-shake-in { from { opacity: 0; transform: translateX(10px); } to { opacity: 1; transform: translateX(0); } }

@media (max-width: 760px) {
  .student-register-check-grid,
  .student-register-riwayat-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 650px) {
  .student-register-nav { padding: 0 14px; }
  .student-register-login span { display: none; }
  .student-register-shell { margin: 14px auto 28px; }
  .student-register-head { padding: 20px; }
  .student-register-head > span { display: none; }
  .student-register-form { padding: 14px; }
  .student-register-section { padding: 16px; }
  .student-register-grid { grid-template-columns: 1fr; gap: 14px; }
  .student-register-grid__wide { grid-column: auto; }
  .student-register-segments label,
  .student-register-modes label { min-height: 62px; flex-direction: column; gap: 4px; }
  .student-register-check-grid,
  .student-register-riwayat-grid { grid-template-columns: 1fr; }
  .student-register-actions { align-items: stretch; flex-direction: column; }
  .student-register-submit { width: 100%; }
}

@media (prefers-reduced-motion: reduce) {
  .student-register-nav,
  .student-register-shell,
  .student-register-section,
  .student-register-actions {
    opacity: 1;
    transform: none;
    animation: none !important;
  }
  .student-register-login,
  .student-register-submit,
  .student-register-segments label,
  .student-register-modes label { transition: none; }
}