/* Student registration — scoped under .sreg / .page-student-registration */

.page-student-registration {
  background: #0b0b0f;
  background-image:
    linear-gradient(to bottom, transparent 65%, rgba(11, 11, 15, 0.25) 85%, rgba(11, 11, 15, 0.5) 100%),
    radial-gradient(ellipse 180% 120% at 85% 50%, rgba(18, 18, 22, 0.25) 0%, transparent 50%),
    radial-gradient(ellipse 140% 100% at 70% 100%, rgba(24, 24, 28, 0.2) 0%, transparent 45%);
  color: var(--white);
  min-height: 100vh;
}

.sreg {
  --field-bg: rgba(255, 255, 255, 0.035);
  --field-border: rgba(255, 255, 255, 0.09);
  box-sizing: border-box;
}

.sreg *,
.sreg *::before,
.sreg *::after {
  box-sizing: border-box;
}

.sreg-page {
  display: grid;
  grid-template-columns: 1fr 1fr;
  min-height: calc(100vh - var(--nav-h));
  padding-top: var(--nav-h);
}

.sreg-form-side {
  padding: 48px 72px 72px var(--inset);
  border-right: 1px solid rgba(255, 255, 255, 0.07);
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.sreg-inner {
  max-width: 480px;
  width: 100%;
}

.sreg-label {
  font-family: var(--font-sans);
  font-weight: 500;
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-on-dark-dim);
  margin: 0 0 10px;
}

.sreg-headline {
  font-family: var(--font-sans);
  font-weight: 900;
  font-size: clamp(28px, 3.4vw, 42px);
  text-transform: uppercase;
  line-height: 1.05;
  letter-spacing: -0.03em;
  color: rgba(255, 255, 255, 0.92);
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 0.04em;
}

.sreg-headline .red {
  color: var(--red);
}

.sreg-sub {
  font-family: var(--font-sans);
  font-weight: 300;
  font-size: 13px;
  color: var(--text-on-dark-dim);
  line-height: 1.7;
  margin: 12px 0 28px;
}

.sreg-form {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.sreg-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.sreg-field {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.sreg-field.is-hidden {
  display: none;
}

.sreg-field-label {
  font-family: var(--font-sans);
  font-weight: 500;
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-on-dark-faint);
}

.sreg-field-label .req {
  color: var(--red);
  margin-left: 2px;
}

.sreg-input,
.sreg-select {
  background: var(--field-bg);
  border: 1px solid var(--field-border);
  border-radius: 7px;
  padding: 13px 14px;
  font-family: var(--font-sans);
  font-weight: 400;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.88);
  outline: none;
  width: 100%;
  transition: border-color 0.2s, background 0.2s, box-shadow 0.2s;
}

.sreg-select {
  padding-right: 36px;
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8' fill='none'%3E%3Cpath d='M1 1l5 5 5-5' stroke='rgba(255,255,255,0.22)' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 14px center;
  background-color: var(--field-bg);
}

.sreg-input::placeholder {
  color: var(--text-on-dark-soft);
  font-weight: 300;
}

.sreg-input:focus,
.sreg-select:focus {
  border-color: rgba(255, 45, 45, 0.5);
  background-color: rgba(255, 45, 45, 0.03);
  box-shadow: 0 0 0 3px rgba(255, 45, 45, 0.06);
}

.sreg-select option {
  background: #1a1a1a;
  color: #fff;
}

.sreg-input:disabled,
.sreg-select:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.sreg-input.is-invalid {
  border-color: rgba(255, 45, 45, 0.65);
  background: rgba(255, 45, 45, 0.04);
}

.sreg-input.is-valid {
  border-color: rgba(80, 210, 120, 0.35);
}

.sreg-field-msg {
  display: none;
  margin: 0;
  font-family: var(--font-sans);
  font-size: 11px;
  line-height: 1.4;
  color: #ffb4b4;
}

.sreg-field-msg.is-visible {
  display: block;
}

.sreg-submit {
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: 13px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  background: var(--red);
  color: #fff;
  border: none;
  border-radius: 7px;
  padding: 14px 24px;
  cursor: pointer;
  width: 100%;
  margin-top: 4px;
  transition: opacity 0.2s, background 0.2s;
}

.sreg-submit:hover:not(:disabled) {
  background: #e8252c;
}

.sreg-submit:disabled {
  opacity: 0.4;
  cursor: not-allowed;
  background: rgba(255, 255, 255, 0.08);
  color: var(--grey-1);
}

.sreg-success {
  display: none;
}

.sreg-success.is-visible {
  display: block;
}

.sreg-form.is-hidden {
  display: none;
}

.sreg-success-check {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 1px solid rgba(47, 158, 99, 0.5);
  color: #2f9e63;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  margin-bottom: 16px;
}

.sreg-context {
  padding: 48px 72px 72px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.sreg-context-inner {
  max-width: 420px;
}

.sreg-context-kicker {
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-on-dark-dim);
  margin: 0 0 12px;
}

.sreg-context-title {
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: 22px;
  letter-spacing: -0.02em;
  color: rgba(255, 255, 255, 0.92);
  margin: 0 0 28px;
}

.sreg-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.sreg-steps li {
  display: grid;
  grid-template-columns: 28px 1fr;
  gap: 12px;
  align-items: start;
}

.sreg-step-n {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--red);
  padding-top: 2px;
}

.sreg-step-t {
  font-size: 14px;
  line-height: 1.55;
  color: var(--text-on-dark-muted);
}

.sreg-step-t b {
  display: block;
  color: rgba(255, 255, 255, 0.88);
  font-weight: 600;
  margin-bottom: 2px;
}

@media (max-width: 900px) {
  .sreg-page {
    grid-template-columns: 1fr;
  }

  .sreg-form-side {
    padding: 36px var(--content-padding-inline) 40px;
    border-right: none;
    border-bottom: 1px solid rgba(255, 255, 255, 0.07);
  }

  .sreg-context {
    padding: 36px var(--content-padding-inline) 64px;
  }

  .sreg-row {
    grid-template-columns: 1fr;
  }
}