/* Base styles — reset + базовая типографика */

/* Modern CSS Reset */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-body);
  font-size: var(--fs-body);
  line-height: 1.6;
  color: var(--color-text-primary);
  background: var(--color-canvas-primary);
  min-height: 100vh;
}

/* Типографика */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: var(--color-text-primary);
}

h1 {
  font-size: var(--fs-h1);
  line-height: 1.1;
}

h2 {
  font-size: var(--fs-h2);
  font-weight: 600;
}

h3 {
  font-size: var(--fs-h3);
  font-weight: 600;
}

h4 {
  font-size: var(--fs-h4);
  font-weight: 600;
}

p {
  max-width: var(--text-max-width);
}

a {
  color: var(--color-accent-primary);
  text-decoration: none;
  transition: color var(--duration-fast) var(--ease-default);
}

a:hover {
  color: var(--color-accent-hover);
}

/* Списки */
ul, ol {
  list-style-position: inside;
}

/* Формы */
button, input, textarea, select {
  font-family: inherit;
  font-size: inherit;
}

button {
  cursor: pointer;
  border: none;
  background: none;
}

input, textarea, select {
  border: 1px solid var(--color-border-primary);
  border-radius: var(--border-radius-input);
  padding: 12px 16px;
  font-size: 16px; /* prevent iOS zoom */
  background: var(--color-canvas-primary);
  transition: border-color var(--duration-fast) var(--ease-default);
}

input:hover, textarea:hover, select:hover {
  border-color: var(--color-text-tertiary);
}

input:focus, textarea:focus, select:focus {
  outline: none;
  border: 2px solid var(--color-accent-primary);
  padding: 11px 15px; /* компенсация 2px border */
}

/* Focus states для доступности */
button:focus-visible,
a:focus-visible,
input:focus-visible,
textarea:focus-visible,
select:focus-visible {
  outline: 2px solid var(--color-accent-primary);
  outline-offset: 2px;
}

/* Изображения */
img, picture, video, canvas, svg {
  display: block;
  max-width: 100%;
  height: auto;
}

/* Prefers reduced motion */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* Skip link для доступности */
.skip-link {
  position: absolute;
  top: -40px;
  left: 0;
  background: #000;
  color: #fff;
  padding: 8px 16px;
  z-index: 100;
  border-radius: 0 0 4px 0;
}

.skip-link:focus {
  top: 0;
}

/* Utility classes */
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}

.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--padding-desktop);
}

@media (max-width: 1439px) {
  .container {
    padding: 0 var(--padding-tablet);
  }
}

@media (max-width: 767px) {
  .container {
    padding: 0 var(--padding-mobile);
  }
}