/* =============================================================================
   Design Kit — токены и компоненты (mobile-first)
   Шрифт: Stack Sans Text — подключите файлы шрифта или замените на веб-аналог.
   ============================================================================= */

:root {
  /* Colors */
  --color-text-primary: #111113;
  --color-text-secondary: #393939;
  --color-accent: #fa5805;
  --color-stroke: #e6e6e6;
  --color-surface: #ffffff;
  --color-background: #f6f6f6;
  --color-error: #f40017;
  --color-success: #388e3c;

  --color-accent-hover: #e35204;
  --color-accent-active: #cc4a04;
  --color-on-accent: #ffffff;
  --color-input-placeholder: #8a8a8a;
  --color-disabled-fg: #b0b0b0;
  --color-disabled-bg: #f0f0f0;

  /* Typography scale (из дизайн-системы) */
  --font-family: "Stack Sans Text", "Plus Jakarta Sans", system-ui, -apple-system,
    "Segoe UI", sans-serif;
  --font-display-size: 2rem;
  --font-display-lh: 2.75rem;
  --font-display-weight: 700;

  --font-title-size: 1.25rem;
  --font-title-lh: 1.5rem;
  --font-title-weight: 600;

  --font-heading-size: 1.0625rem;
  --font-heading-lh: 1.5rem;
  --font-heading-weight: 600;

  --font-body-strong-size: 0.9375rem;
  --font-body-strong-lh: 1.5rem;
  --font-body-strong-weight: 700;

  --font-body-size: 0.875rem;
  --font-body-lh: 1.25rem;
  --font-body-weight: 400;

  --font-caption-size: 0.6875rem;
  --font-caption-lh: 0.75rem;
  --font-caption-weight: 400;

  /* Spacing */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;

  /* Radius */
  --radius-sm: 0.5rem;
  --radius-md: 0.75rem;
  --radius-lg: 1rem;
  --radius-xl: 1.5rem;
  --radius-2xl: 2rem;
  --radius-full: 624.9375rem;
  /* Обычные кнопки; оранжевая — см. --radius-button-primary (Continue Button Container.svg) */
  --radius-button: 1rem;
  --radius-button-lg: 1.125rem;
  /* 12px rx, высота макета 56px — assets/Continue Button Container.svg */
  --radius-button-primary: 0.75rem;
  --min-height-button-primary: 3.5rem;

  /* Shadows */
  --shadow-card: 0 0.25rem 1.5rem rgba(17, 17, 19, 0.06);
  --shadow-thumb: 0 0.125rem 0.5rem rgba(17, 17, 19, 0.12);

  /* Layout */
  --page-max: 72rem;
  --touch-min: 2.75rem;

  /* Transitions */
  --ease: cubic-bezier(0.4, 0, 0.2, 1);
  --duration: 0.2s;
}

@media (min-width: 40rem) {
  :root {
    --font-display-size: 2.5rem;
    --font-display-lh: 2.75rem;
  }
}

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

html {
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  font-family: var(--font-family);
  font-size: var(--font-body-size);
  line-height: var(--font-body-lh);
  font-weight: var(--font-body-weight);
  color: var(--color-text-secondary);
  background-color: var(--color-background);
}

/* ----------------------------------------------------------------------------- Typography */
.dk-h1,
h1 {
  margin: 0 0 var(--space-4);
  font-size: var(--font-display-size);
  line-height: var(--font-display-lh);
  font-weight: var(--font-display-weight);
  color: var(--color-text-primary);
  letter-spacing: -0.02em;
}

.dk-h2,
h2 {
  margin: 0 0 var(--space-3);
  font-size: var(--font-title-size);
  line-height: var(--font-title-lh);
  font-weight: var(--font-title-weight);
  color: var(--color-text-primary);
}

.dk-h3,
h3 {
  margin: 0 0 var(--space-2);
  font-size: var(--font-heading-size);
  line-height: var(--font-heading-lh);
  font-weight: var(--font-heading-weight);
  color: var(--color-text-primary);
}

.dk-h4,
h4 {
  margin: 0 0 var(--space-2);
  font-size: var(--font-body-strong-size);
  line-height: var(--font-body-strong-lh);
  font-weight: var(--font-body-strong-weight);
  color: var(--color-text-primary);
}

.dk-p,
p {
  margin: 0 0 var(--space-4);
  /* max-width: 65ch; */
}

.dk-caption,
.dk-text-caption {
  font-size: var(--font-caption-size);
  line-height: var(--font-caption-lh);
  font-weight: var(--font-caption-weight);
  color: var(--color-text-secondary);
}

.dk-text-primary {
  color: var(--color-text-primary);
}

.dk-text-error {
  color: var(--color-error);
}

.dk-text-success {
  color: var(--color-success);
}

/* ----------------------------------------------------------------------------- Buttons */
.dk-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  min-height: var(--touch-min);
  padding: 0.75rem 1.875rem;
  font-family: inherit;
  font-size: var(--font-body-strong-size);
  font-weight: 600;
  line-height: 1.25;
  text-decoration: none;
  border: none;
  border-radius: var(--radius-button);
  cursor: pointer;
  box-shadow: none;
  transition: background-color var(--duration) var(--ease),
    color var(--duration) var(--ease), border-color var(--duration) var(--ease),
    box-shadow var(--duration) var(--ease), transform var(--duration) var(--ease);
}

.dk-btn:disabled {
  opacity: 0.45;
  cursor: not-allowed;
  pointer-events: none;
}

.dk-btn--primary {
  background-color: var(--color-accent);
  color: #ffffff;
  color: var(--color-on-accent);
  box-shadow: none;
  border-radius: var(--radius-button-primary);
  min-height: var(--min-height-button-primary);
  padding: 0.6875rem 1.75rem;
}

.dk-btn--primary:hover {
  background-color: var(--color-accent-hover);
}

.dk-btn--primary:active {
  background-color: var(--color-accent-active);
}

.dk-btn--primary.dk-btn--sm {
  min-height: 2.25rem;
  padding: 0.5rem 1.25rem;
  border-radius: var(--radius-button-primary);
}

.dk-btn--primary.dk-btn--lg {
  min-height: var(--min-height-button-primary);
  padding: 0.6875rem 2rem;
  border-radius: var(--radius-button-primary);
  font-size: 1rem;
}

.dk-btn--secondary {
  background-color: var(--color-stroke);
  color: var(--color-text-primary);
}

.dk-btn--secondary:hover {
  background-color: #d8d8d8;
}

.dk-btn--outline {
  background-color: transparent;
  color: var(--color-text-primary);
  border: 0.125rem solid var(--color-stroke);
}

.dk-btn--outline:hover {
  border-color: var(--color-text-secondary);
  background-color: var(--color-surface);
}

.dk-btn--ghost {
  background-color: transparent;
  color: var(--color-accent);
}

.dk-btn--ghost:hover {
  background-color: rgba(250, 88, 5, 0.08);
}

.dk-btn--block {
  width: 100%;
}

.dk-btn--sm {
  min-height: 2.25rem;
  padding: 0.5rem 1.25rem;
  font-size: var(--font-body-size);
  border-radius: 0.875rem;
}

.dk-btn--lg {
  min-height: 3rem;
  padding: 0.75rem 2rem;
  font-size: 1rem;
  font-weight: 600;
  border-radius: var(--radius-button-lg);
}

.dk-btn__icon {
  flex-shrink: 0;
  width: 1.25em;
  height: 1.25em;
  line-height: 1;
  font-weight: 500;
}

/* ----------------------------------------------------------------------------- Forms */
.dk-field {
  margin-bottom: var(--space-5);
}

.dk-label {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin-bottom: var(--space-2);
  font-size: var(--font-body-strong-size);
  font-weight: var(--font-body-strong-weight);
  color: var(--color-text-primary);
}

.dk-label__icon {
  flex-shrink: 0;
  color: var(--color-text-secondary);
}

.dk-input,
.dk-select {
  width: 100%;
  min-height: var(--touch-min);
  padding: var(--space-3) var(--space-4);
  font-family: inherit;
  font-size: var(--font-body-size);
  line-height: var(--font-body-lh);
  color: var(--color-text-primary);
  background-color: var(--color-surface);
  border: 0.0625rem solid var(--color-stroke);
  border-radius: var(--radius-md);
  outline: none;
  transition: border-color var(--duration) var(--ease), box-shadow var(--duration) var(--ease);
}

.dk-input::placeholder {
  color: var(--color-input-placeholder);
}

.dk-input:hover:not(:disabled),
.dk-select:hover:not(:disabled) {
  border-color: #cfcfcf;
}

.dk-input:focus,
.dk-select:focus {
  border-color: var(--color-text-primary);
  box-shadow: 0 0 0 0.1875rem rgba(17, 17, 19, 0.08);
}

.dk-input:disabled,
.dk-select:disabled {
  color: var(--color-disabled-fg);
  background-color: var(--color-disabled-bg);
  border-color: var(--color-stroke);
  cursor: not-allowed;
}

.dk-field--error .dk-label {
  color: var(--color-error);
}

.dk-field--error .dk-input,
.dk-field--error .dk-select {
  border-color: var(--color-error);
}

.dk-field--error .dk-input:focus {
  box-shadow: 0 0 0 0.1875rem rgba(244, 0, 23, 0.15);
}

.dk-hint {
  display: block;
  margin-top: var(--space-2);
  font-size: var(--font-caption-size);
  line-height: 1.3;
  color: var(--color-text-secondary);
}

.dk-field--error .dk-hint {
  color: var(--color-error);
}

.dk-select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%23393939' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right var(--space-3) center;
  padding-right: var(--space-8);
}

.dk-checkbox {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  cursor: pointer;
  user-select: none;
}

.dk-checkbox input {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
}

.dk-checkbox__box {
  flex-shrink: 0;
  width: 1.375rem;
  height: 1.375rem;
  margin-top: 0.125rem;
  border: 0.125rem solid var(--color-stroke);
  border-radius: var(--radius-sm);
  background: var(--color-surface);
  display: grid;
  place-items: center;
  transition: border-color var(--duration) var(--ease), background var(--duration) var(--ease);
}

.dk-checkbox__box svg {
  width: 0.875rem;
  height: 0.875rem;
  color: var(--color-on-accent);
  opacity: 0;
  transform: scale(0.8);
  transition: opacity var(--duration) var(--ease), transform var(--duration) var(--ease);
}

.dk-checkbox input:checked + .dk-checkbox__box {
  background: var(--color-accent);
  border-color: var(--color-accent);
}

.dk-checkbox input:checked + .dk-checkbox__box svg {
  opacity: 1;
  transform: scale(1);
}

.dk-checkbox input:focus-visible + .dk-checkbox__box {
  outline: 0.125rem solid var(--color-accent);
  outline-offset: 0.125rem;
}

.dk-checkbox input:disabled + .dk-checkbox__box {
  opacity: 0.5;
  cursor: not-allowed;
}

.dk-checkbox__text {
  font-size: var(--font-body-size);
  line-height: var(--font-body-lh);
  color: var(--color-text-primary);
}

/* Range / slider */
.dk-range-wrap {
  padding: var(--space-2) 0;
}

.dk-range {
  width: 100%;
  height: 2rem;
  appearance: none;
  background: transparent;
  outline: none;
}

.dk-range::-webkit-slider-runnable-track {
  height: 0.375rem;
  border-radius: var(--radius-full);
  background: linear-gradient(
    to right,
    var(--color-accent) 0%,
    var(--color-accent) var(--range-pct, 50%),
    var(--color-stroke) var(--range-pct, 50%),
    var(--color-stroke) 100%
  );
}

.dk-range::-webkit-slider-thumb {
  appearance: none;
  width: 1.5rem;
  height: 2rem;
  margin-top: -0.8125rem;
  border-radius: var(--radius-md);
  background: var(--color-surface);
  box-shadow: var(--shadow-thumb);
  border: 0.0625rem solid var(--color-stroke);
  cursor: pointer;
}

.dk-range::-moz-range-track {
  height: 0.375rem;
  background: var(--color-stroke);
  border-radius: var(--radius-full);
}

.dk-range::-moz-range-progress {
  height: 0.375rem;
  background: var(--color-accent);
  border-radius: var(--radius-full);
}

.dk-range::-moz-range-thumb {
  width: 1.5rem;
  height: 2rem;
  border-radius: var(--radius-md);
  background: var(--color-surface);
  box-shadow: var(--shadow-thumb);
  border: 0.0625rem solid var(--color-stroke);
  cursor: pointer;
}

.dk-range-labels {
  display: flex;
  justify-content: space-between;
  margin-top: var(--space-2);
  font-size: var(--font-caption-size);
  color: var(--color-text-secondary);
}

/* ----------------------------------------------------------------------------- Cards */
.dk-card {
  background: var(--color-surface);
  border: 0.0625rem solid var(--color-stroke);
  border-radius: var(--radius-2xl);
  padding: var(--space-5);
  box-shadow: var(--shadow-card);
}

@media (min-width: 40rem) {
  .dk-card {
    padding: var(--space-6);
  }
}

.dk-card--dark {
  background: var(--color-text-primary);
  border-color: var(--color-text-primary);
  color: var(--color-surface);
}

.dk-card--dark .dk-h3,
.dk-card--dark h3 {
  color: var(--color-surface);
}

.dk-card--dark .dk-p,
.dk-card--dark p {
  color: rgba(255, 255, 255, 0.85);
}

.dk-card__row {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  padding: var(--space-4);
  background: var(--color-surface);
  border: 0.0625rem solid var(--color-stroke);
  border-radius: var(--radius-xl);
  text-decoration: none;
  color: inherit;
  transition: border-color var(--duration) var(--ease), box-shadow var(--duration) var(--ease);
}

.dk-card__row:hover {
  border-color: #cfcfcf;
  box-shadow: var(--shadow-card);
}

.dk-card__icon-wrap {
  flex-shrink: 0;
  width: 2.75rem;
  height: 2.75rem;
  display: grid;
  place-items: center;
  background: var(--color-text-primary);
  color: var(--color-surface);
  border-radius: var(--radius-md);
}

.dk-card__icon-wrap--light {
  background: var(--color-background);
  color: var(--color-text-primary);
}

.dk-card__meta {
  flex: 1;
  min-width: 0;
}

.dk-card__title {
  font-size: var(--font-body-strong-size);
  font-weight: var(--font-body-strong-weight);
  color: var(--color-text-primary);
}

.dk-card__chevron {
  flex-shrink: 0;
  color: var(--color-text-secondary);
}

/* ----------------------------------------------------------------------------- Badges */
.dk-badge {
  display: inline-flex;
  align-items: center;
  padding: var(--space-1) var(--space-3);
  font-size: var(--font-caption-size);
  font-weight: 600;
  line-height: 1.2;
  border-radius: var(--radius-full);
  white-space: nowrap;
}

.dk-badge--neutral {
  background: var(--color-background);
  color: var(--color-text-primary);
}

.dk-badge--accent {
  background: var(--color-accent);
  color: var(--color-on-accent);
}

.dk-badge--success {
  background: rgba(56, 142, 60, 0.12);
  color: var(--color-success);
}

.dk-badge--error {
  background: rgba(244, 0, 23, 0.1);
  color: var(--color-error);
}

.dk-badge--outline {
  background: transparent;
  border: 0.0625rem solid var(--color-stroke);
  color: var(--color-text-primary);
}

/* ----------------------------------------------------------------------------- Chips */
.dk-chip {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2.25rem;
  padding: 0 var(--space-4);
  font-family: inherit;
  font-size: var(--font-body-size);
  font-weight: 500;
  color: var(--color-text-primary);
  background: var(--color-surface);
  border: 0.0625rem solid var(--color-stroke);
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: background var(--duration) var(--ease), color var(--duration) var(--ease),
    border-color var(--duration) var(--ease);
}

.dk-chip:hover {
  border-color: #cfcfcf;
}

.dk-chip[aria-pressed="true"],
.dk-chip.is-selected {
  background: var(--color-accent);
  border-color: var(--color-accent);
  color: var(--color-on-accent);
}

/* ----------------------------------------------------------------------------- Icons */
.dk-icon {
  display: inline-block;
  width: 1.5rem;
  height: 1.5rem;
  flex-shrink: 0;
  color: currentColor;
}

.dk-icon--lg {
  width: 2rem;
  height: 2rem;
}

.dk-icon--error {
  color: var(--color-error);
}

/* ----------------------------------------------------------------------------- Steppers */
.dk-stepper {
  display: flex;
  gap: var(--space-2);
  align-items: center;
}

.dk-stepper__seg {
  flex: 1;
  max-width: 4rem;
  height: 0.25rem;
  border-radius: var(--radius-full);
  background: var(--color-stroke);
}

.dk-stepper__seg--active {
  background: var(--color-accent);
}

/* ----------------------------------------------------------------------------- Showcase layout (страница витрины) */
.dk-page {
  min-height: 100vh;
}

.dk-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(8px);
  border-bottom: 0.0625rem solid var(--color-stroke);
}

.dk-header__inner {
  max-width: var(--page-max);
  margin: 0 auto;
  padding: var(--space-4) var(--space-4);
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.dk-logo {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-weight: 700;
  font-size: var(--font-title-size);
  color: var(--color-text-primary);
  text-decoration: none;
}

.dk-nav {
  margin-left: auto;
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.dk-nav a {
  font-size: var(--font-caption-size);
  font-weight: 600;
  color: var(--color-text-secondary);
  text-decoration: none;
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-md);
}

.dk-nav a:hover {
  color: var(--color-accent);
  background: rgba(250, 88, 5, 0.06);
}

.dk-main {
  max-width: var(--page-max);
  margin: 0 auto;
  padding: var(--space-6) var(--space-4) var(--space-10);
}

.dk-section {
  margin-bottom: var(--space-10);
  scroll-margin-top: 5rem;
}

.dk-section__title {
  margin-bottom: var(--space-2);
}

.dk-section__lead {
  margin-bottom: var(--space-6);
  max-width: 50ch;
}

.dk-swatch-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(8rem, 1fr));
  gap: var(--space-4);
}

.dk-swatch {
  text-align: center;
}

.dk-swatch__chip {
  height: 4rem;
  border-radius: var(--radius-lg);
  border: 0.0625rem solid var(--color-stroke);
  margin-bottom: var(--space-2);
}

.dk-swatch__name {
  font-size: var(--font-caption-size);
  font-weight: 600;
  color: var(--color-text-primary);
}

.dk-swatch__hex {
  font-size: var(--font-caption-size);
  color: var(--color-text-secondary);
  font-variant-numeric: tabular-nums;
}

.dk-stack {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  align-items: flex-start;
}

.dk-stack--row {
  flex-direction: row;
  flex-wrap: wrap;
  align-items: center;
}

.dk-divider {
  height: 0.0625rem;
  background: var(--color-stroke);
  margin: var(--space-6) 0;
  border: 0;
}

.dk-icon-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(5.5rem, 1fr));
  gap: var(--space-4);
}

.dk-icon-tile {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-4);
  background: var(--color-surface);
  border: 0.0625rem solid var(--color-stroke);
  border-radius: var(--radius-lg);
  text-align: center;
}

.dk-icon-tile span {
  font-size: var(--font-caption-size);
  color: var(--color-text-secondary);
  line-height: 1.2;
}

.dk-code {
  font-family: ui-monospace, "Cascadia Code", monospace;
  font-size: 0.75rem;
  color: var(--color-text-secondary);
}