/* ========================================
   Roomix.pro - Base Styles (Reset + Типографика)
   ======================================== */

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: var(--leading-normal);
  color: var(--color-text-primary);
  background-color: var(--color-background);
  min-height: 100vh;
  overflow-x: hidden;
}

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

/* ===== Формы ===== */
input,
button,
textarea,
select {
  font: inherit;
  color: inherit;
}

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

/* ===== Списки ===== */
ul,
ol {
  list-style: none;
}

/* ===== Ссылки ===== */
a {
  color: var(--color-blue-accent);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--color-text-primary);
}

/* ===== Accessibility ===== */

/* Skip link */
.skip-link {
  position: absolute;
  top: -100%;
  left: 50%;
  transform: translateX(-50%);
  background: var(--color-text-primary);
  color: var(--color-background);
  padding: var(--space-3) var(--space-5);
  border-radius: var(--radius-md);
  z-index: 1000;
  font-weight: 500;
  transition: top var(--transition-fast);
}

.skip-link:focus {
  top: var(--space-4);
}

/* Focus states */
:focus-visible {
  outline: 2px solid var(--color-blue-accent);
  outline-offset: 2px;
}

button:focus-visible,
a:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

/* ===== Типографика ===== */

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: var(--leading-tight);
  color: var(--color-text-primary);
  letter-spacing: var(--tracking-tight);
}

h1 {
  font-size: var(--text-4xl);
}

h2 {
  font-size: var(--text-3xl);
}

h3 {
  font-size: var(--text-2xl);
}

h4 {
  font-size: var(--text-xl);
}

h5 {
  font-size: var(--text-lg);
}

h6 {
  font-size: var(--text-base);
}

p {
  margin-bottom: var(--space-4);
  line-height: var(--leading-relaxed);
}

p:last-child {
  margin-bottom: 0;
}

strong, b {
  font-weight: 600;
}

em, i {
  font-style: italic;
}

small {
  font-size: var(--text-sm);
}

/* ===== Container ===== */
.container {
  width: min(var(--container-max), 100% - var(--container-padding) * 2);
  margin-inline: auto;
}

/* ===== Section базовые стили ===== */
.section {
  padding: var(--section-padding-y) 0;
}

/* Чередование фонов секций */
.section--alt {
  background-color: var(--color-background-alt);
}

/* ===== Утилитарные классы ===== */

/* Текст */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.text-primary { color: var(--color-text-primary); }
.text-secondary { color: var(--color-text-secondary); }
.text-muted { color: var(--color-text-muted); }
.text-accent { color: var(--color-accent); }

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

.hidden {
  display: none !important;
}

/* Highlight золотой */
.highlight-gold {
  color: var(--color-accent);
  font-weight: 600;
}

/* Highlight синий */
.highlight-blue {
  color: var(--color-blue-accent);
  font-weight: 600;
}

/* ===== Анимации ===== */
@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;
  }
}