/* Reusable UI components */

/* —— Button (double yellow CTA) —— */
.btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: var(--size-btn-h);
  padding: 0.85em 1.75em;
  border: none;
  border-radius: var(--radius-btn);
  font-family: var(--font-family);
  font-weight: var(--font-bold);
  font-size: var(--fs-21);
  line-height: 1.2;
  text-align: center;
  text-transform: uppercase;
  text-decoration: none;
  color: var(--black);
  background: transparent;
  cursor: pointer;
  transition: transform var(--transition), filter var(--transition);
}

.btn::before,
.btn::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: var(--yellow);
  transition: opacity var(--transition);
}

.btn::before {
  top: 0;
  left: clamp(4px, 0.365vw, 7px);
  right: clamp(-7px, -0.365vw, -4px);
  bottom: clamp(4px, 0.365vw, 7px);
  opacity: 0.5;
}

.btn::after {
  top: clamp(4px, 0.365vw, 7px);
  left: 0;
  right: 0;
  bottom: 0;
  opacity: 1;
}

.btn__label {
  position: relative;
  z-index: 1;
  /* Центр по видимому слою ::after */
  transform: translateY(calc(clamp(4px, 0.365vw, 7px) / 2));
}

.btn:hover {
  filter: brightness(0.97);
}

.btn:focus-visible {
  outline: 3px solid var(--purple);
  outline-offset: 4px;
}

.btn:active {
  transform: translate(2px, 2px);
}

.btn--yellow {
  /* default CTA look; kept as explicit modifier */
}

.btn--gray {
  color: var(--black);
}

.btn--gray::before,
.btn--gray::after {
  background: #bdbdbd;
}

.btn--sm {
  min-height: clamp(52px, 3.125vw, 60px);
  font-size: var(--fs-18);
  padding-inline: 1.4em;
}

/* —— Form loader —— */
.form-loader {
  position: fixed;
  inset: 0;
  z-index: 10000;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-16);
  background: rgba(0, 0, 0, 0.45);
}

.form-loader[hidden] {
  display: none;
}

.form-loader__spinner {
  width: clamp(40px, 3.125vw, 60px);
  height: clamp(40px, 3.125vw, 60px);
  border: 4px solid rgba(255, 255, 255, 0.35);
  border-top-color: var(--yellow);
  border-radius: 50%;
  animation: form-loader-spin 0.8s linear infinite;
}

.form-loader__text {
  color: var(--white);
  font-weight: var(--font-bold);
  font-size: var(--fs-18);
}

@keyframes form-loader-spin {
  to {
    transform: rotate(360deg);
  }
}

/* —— Cards —— */
.card {
  display: flex;
  flex-direction: column;
  overflow: hidden;
  border-radius: var(--radius-card);
  background: var(--white);
  color: var(--text);
}

.card__header {
  padding: clamp(22px, 1.458vw, 28px) clamp(22px, 1.823vw, 35px)
    clamp(18px, 1.25vw, 24px);
  color: var(--white);
}

.card__title {
  font-weight: var(--font-bold);
  font-size: var(--fs-35);
  line-height: 1.2;
}

.card__subtitle {
  margin-top: var(--space-8);
  font-weight: var(--font-regular);
  font-size: var(--fs-27);
  line-height: 1.2;
}

.card__body {
  padding: clamp(20px, 1.458vw, 28px) clamp(22px, 1.823vw, 35px)
    clamp(26px, 1.875vw, 36px);
}

.card__lead {
  margin-bottom: var(--space-16);
  font-weight: var(--font-bold);
  font-size: var(--fs-25);
  line-height: 1.3;
}

.card__text {
  font-weight: var(--font-regular);
  font-size: var(--fs-21);
  line-height: 1.35;
}

.card__text strong {
  font-weight: var(--font-bold);
}

.card__text--spaced {
  margin-top: var(--space-16);
}

.card--green {
  background: var(--white);
}

.card--green .card__header {
  background: var(--green);
}

.card--green .card__title {
  font-size: var(--fs-47);
  line-height: 1.24;
}

.card--green .card__subtitle {
  color: var(--white);
}

.card--green .card__text {
  font-size: var(--fs-27);
  line-height: 1.35;
}

.card--purple {
  background: rgba(255, 255, 255, 0.75);
  backdrop-filter: blur(4px);
}

.card--purple .card__header {
  background: var(--purple);
}

.card--purple .card__title {
  font-size: var(--fs-35);
  line-height: 1.3;
}

.card--purple .card__subtitle {
  color: var(--white);
}

/* —— Green card vertical arrow (Figma: rotate-90 horizontal SVG) —— */
.card--with-arrow {
  position: relative;
}

.card--with-arrow .card__body {
  position: relative;
  padding-left: clamp(56px, 4.323vw, 83px);
}

.card__arrow {
  position: absolute;
  left: clamp(28px, 2.448vw, 47px);
  top: 0;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 0;
  height: clamp(96px, 7.917vw, 152px);
  pointer-events: none;
}

.card__arrow img {
  flex-shrink: 0;
  width: clamp(96px, 7.917vw, 152px);
  height: auto;
  max-width: none;
  transform: rotate(90deg);
}

.card__arrow--tall {
  height: clamp(180px, 16.458vw, 316px);
}

.card__arrow--tall img {
  width: clamp(180px, 16.458vw, 316px);
}

.card__body-main {
  min-width: 0;
}

/* —— Form field —— */
.form-field {
  display: block;
  width: 100%;
}

.form-field__label {
  display: block;
  margin-bottom: var(--space-8);
  font-size: var(--fs-16);
  font-weight: var(--font-bold);
}

.form-field__input,
.form-field__select,
.form-field__textarea {
  display: block;
  width: 100%;
  min-height: var(--size-input-h);
  padding: var(--space-16) var(--space-24);
  border: 1px solid #bdbdbd;
  border-radius: var(--radius-input);
  background: var(--white);
  color: var(--text);
  transition: border-color var(--transition), box-shadow var(--transition);
}

.form-field__input::placeholder,
.form-field__textarea::placeholder {
  color: #8a8a8a;
}

.form-field__input:focus,
.form-field__select:focus,
.form-field__textarea:focus {
  outline: none;
  border-color: var(--purple);
  box-shadow: 0 0 0 3px rgba(140, 0, 153, 0.18);
}

.form-field__input.is-invalid,
.form-field__select.is-invalid,
.form-field__textarea.is-invalid {
  border-color: #c0392b;
}

.form-field--checkbox .form-field__input.is-invalid {
  outline: 2px solid #c0392b;
  outline-offset: 2px;
}

.form-field--checkbox {
  display: flex;
  align-items: flex-start;
  gap: var(--space-12);
}

.form-field--checkbox .form-field__input {
  width: clamp(14px, 0.833vw, 16px);
  height: clamp(14px, 0.833vw, 16px);
  min-height: 0;
  margin-top: var(--space-4);
  padding: 0;
  border-radius: 3px;
  accent-color: var(--purple);
  flex-shrink: 0;
}

.form-field--checkbox .form-field__label {
  margin: 0;
  font-weight: var(--font-regular);
  font-size: var(--fs-14);
  line-height: 1.4;
}

/* —— Bullet list (hero) —— */
.bullet-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-28);
}

.bullet-list__item {
  display: grid;
  grid-template-columns: var(--size-bullet) 1fr;
  gap: clamp(14px, 1.354vw, 26px);
  align-items: start;
  font-weight: var(--font-bold);
  font-size: var(--fs-38);
  line-height: 1.2;
}

.bullet-list__marker {
  width: var(--size-bullet);
  height: var(--size-bullet);
  margin-top: 0.35em;
  border-radius: 50%;
  background: var(--yellow);
  flex-shrink: 0;
}

/* —— Slider —— */
.slider {
  position: relative;
}

.slider__viewport {
  overflow: hidden;
  width: 100%;
}

.slider__track {
  display: flex;
  gap: clamp(12px, 1.042vw, 20px);
  transition: transform 0.35s ease;
  will-change: transform;
}

.slider__slide {
  flex: 0 0 calc((100% - 60px) / 4);
  min-width: 0;
}

.slider__controls {
  display: flex;
  gap: var(--space-12);
  margin-top: var(--space-24);
}

.slider__btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: var(--size-slider-btn);
  height: var(--size-slider-btn);
  padding: 0;
  border: none;
  border-radius: 50%;
  background: transparent;
  cursor: pointer;
  transition: transform var(--transition), filter var(--transition);
}

.slider__btn img {
  width: var(--size-slider-btn);
  height: var(--size-slider-btn);
}

.slider__btn:hover {
  filter: brightness(0.95);
}

.slider__btn:focus-visible {
  outline: 3px solid var(--purple);
  outline-offset: 3px;
}

.slider__btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.slider__btn--prev,
.slider__btn--next {
  /* modifiers for JS hooks */
}