* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --color-background: #ffffff;
  --color-light: #ebd9ff;
  --color-dark: #442980;
  --color-violet: #ac81f2;
  --color-orange: #ff7a0f;
  --color-rose: #ff008c;
  --color-yellow: #ffc905;
  --color-black: #0a0a0a;
  --font: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

html {
  font-size: 16px;
}

body {
  font-family: var(--font);
  background-color: var(--color-light);
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 64px;
}

.register-student {
  width: 100%;
  max-width: 1100px;
  margin: 0 auto;
}

.register-student-header {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  text-align: center;
  margin-bottom: 48px;
}

.register-student-logo {
  font-size: 36px;
  font-weight: 800;
  color: var(--color-orange);
  display: inline-block;
  margin-bottom: 32px;
}

.register-student-title {
  font-size: 32px;
  font-weight: 700;
  color: var(--color-black);
  margin-bottom: 16px;
}

.register-student-desc {
  font-size: 18px;
  font-weight: 600;
  color: var(--color-rose);
}

.register-student-container {
  padding: 32px;
}

.register-student-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  align-items: start;
}

.register-student-left-col {
  padding: 48px;
  display: flex;
  flex-direction: column;
  gap: 24px;
  border-radius: 56px;
  background-color: var(--color-dark);
}

.register-student-right-col {
  display: flex;
  flex-direction: column;
  gap: 32px;
}

.register-student-form-card {
  padding: 48px;
  display: flex;
  flex-direction: column;
  gap: 24px;
  border-radius: 56px;
}
.rose {
  background-color: var(--color-rose);
}
.orange {
  background-color: var(--color-orange);
}

.register-student-input-field {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.register-student-input-field label {
  font-size: 16px;
  font-weight: 500;
  color: var(--color-background);
}

.register-student-input-field input,
.register-student-input-field select {
  width: 100%;
  padding: 14px 16px;
  border-radius: 56px;
  border: solid 2px transparent;
  font-size: 16px;
  font-family: var(--font);
  transition: border-color 0.3s ease;
  outline: none;
}

.register-student-input-field input:focus,
.register-student-input-field select:focus {
  border-color: var(--color-black);
}

.register-student-input-field select {
  appearance: none;
  background-image: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" viewBox="0 0 24 24" fill="none" stroke="%23442980" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><polyline points="6 9 12 15 18 9"></polyline></svg>');
  background-repeat: no-repeat;
  background-position: right 1rem center;
  background-size: 1rem;
  cursor: pointer;
}

.register-student-btn-submit {
  display: block;
  width: 250px;
  padding: 24px;
  margin: 48px auto 0 auto;
  background-color: var(--color-black);
  color: var(--color-background);
  font-family: var(--font);
  font-size: 18px;
  font-weight: 500;
  border: none;
  border-radius: 56px;
  cursor: pointer;
  transition: all 0.3s ease;
}
.register-student-btn-submit:hover {
  transform: scale(0.97);
}

/* ========== АДАПТИВНАЯ ВЕРСТКА ========== */

/* Планшеты (768px - 1023px) */
@media (max-width: 1023px) {
  body {
    padding: 48px 32px;
  }

  .register-student {
    max-width: 100%;
  }

  .register-student-container {
    padding: 24px;
  }

  .register-student-left-col {
    padding: 32px;
    gap: 20px;
    border-radius: 48px;
  }

  .register-student-form-card {
    padding: 32px;
    gap: 20px;
    border-radius: 48px;
  }

  .register-student-logo {
    font-size: 32px;
    margin-bottom: 24px;
  }

  .register-student-title {
    font-size: 28px;
  }

  .register-student-desc {
    font-size: 16px;
  }

  .register-student-content {
    gap: 24px;
  }

  .register-student-right-col {
    gap: 24px;
  }

  .register-student-input-field label {
    font-size: 14px;
  }

  .register-student-input-field input,
  .register-student-input-field select {
    padding: 12px 14px;
    font-size: 14px;
  }
}

/* Мобильные устройства (до 767px) */
@media (max-width: 767px) {
  body {
    padding: 32px 20px;
  }

  .register-student-header {
    margin-bottom: 32px;
  }

  .register-student-logo {
    font-size: 28px;
    margin-bottom: 20px;
  }

  .register-student-title {
    font-size: 24px;
    margin-bottom: 12px;
  }

  .register-student-desc {
    font-size: 14px;
  }

  .register-student-container {
    padding: 0;
  }

  .register-student-content {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .register-student-left-col {
    padding: 24px;
    border-radius: 40px;
    gap: 16px;
  }

  .register-student-right-col {
    gap: 20px;
  }

  .register-student-form-card {
    padding: 24px;
    border-radius: 40px;
    gap: 16px;
  }

  .register-student-input-field {
    gap: 6px;
  }

  .register-student-input-field label {
    font-size: 14px;
  }

  .register-student-input-field input,
  .register-student-input-field select {
    padding: 12px 14px;
    font-size: 14px;
  }

  .register-student-btn-submit {
    width: 100%;
    max-width: 280px;
    padding: 16px;
    margin: 32px auto 0 auto;
    font-size: 16px;
  }
}

/* Очень маленькие телефоны (до 480px) */
@media (max-width: 480px) {
  body {
    padding: 20px 16px;
  }

  .register-student-header {
    margin-bottom: 24px;
  }

  .register-student-logo {
    font-size: 24px;
    margin-bottom: 16px;
  }

  .register-student-title {
    font-size: 20px;
  }

  .register-student-desc {
    font-size: 13px;
  }

  .register-student-left-col {
    padding: 20px;
    border-radius: 32px;
    gap: 14px;
  }

  .register-student-form-card {
    padding: 20px;
    border-radius: 32px;
    gap: 14px;
  }

  .register-student-input-field label {
    font-size: 13px;
  }

  .register-student-input-field input,
  .register-student-input-field select {
    padding: 10px 12px;
    font-size: 13px;
  }

  .register-student-btn-submit {
    max-width: 100%;
    padding: 14px;
    font-size: 14px;
    margin-top: 24px;
  }
}

/* Планшеты в альбомной ориентации */
@media (min-width: 768px) and (max-width: 1023px) and (orientation: landscape) {
  body {
    padding: 32px;
  }

  .register-student-left-col {
    padding: 28px;
  }

  .register-student-form-card {
    padding: 28px;
  }

  .register-student-content {
    gap: 20px;
  }
}