/* Ryan Arche Server — Base Styles v2.0 */
/* "Liquid Precision" — dark infrastructure + fluid elegance */

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  color-scheme: dark;
  font-size: 16px;
  overflow-x: hidden;
}

body {
  font-family: var(--font-primary);
  font-size: var(--text-body);
  line-height: var(--leading-normal);
  color: var(--text-primary);
  background: var(--bg-primary);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

img, video, svg {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--duration-fast) var(--ease-out);
}

button {
  font: inherit;
  cursor: pointer;
  border: none;
  background: none;
  color: inherit;
  -webkit-appearance: none;
}

ul, ol {
  list-style: none;
}

table {
  border-collapse: collapse;
  width: 100%;
}

input, textarea, select {
  font: inherit;
  color: inherit;
  background: none;
  border: none;
  outline: none;
  -webkit-appearance: none;
  appearance: none;
}

/* ===== i18n — language visibility ===== */
[data-lang] { display: none; }
html[lang="ko"] [data-lang="ko"] { display: inline; }
html[lang="en"] [data-lang="en"] { display: inline; }

[data-lang-block] { display: none; }
html[lang="ko"] [data-lang-block="ko"] { display: block; }
html[lang="en"] [data-lang-block="en"] { display: block; }

[data-lang-flex] { display: none; }
html[lang="ko"] [data-lang-flex="ko"] { display: flex; }
html[lang="en"] [data-lang-flex="en"] { display: flex; }

/* Legacy i18n classes (compatibility) */
.i18n-ko, .i18n-en { display: none; }
html[lang="ko"] .i18n-ko { display: block; }
html[lang="en"] .i18n-en { display: block; }

/* ===== TYPOGRAPHY ===== */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: var(--weight-bold);
  line-height: var(--leading-tight);
  letter-spacing: var(--tracking-tight);
}

h1 { font-size: var(--text-h1); }
h2 { font-size: var(--text-h2); }
h3 { font-size: var(--text-h3); }

p {
  line-height: var(--leading-relaxed);
}

/* Text utility classes */
.text-hero {
  font-family: var(--font-display);
  font-size: var(--text-hero);
  font-weight: var(--weight-extrabold);
  line-height: var(--leading-tight);
  letter-spacing: var(--tracking-tighter);
  text-transform: uppercase;
}

.text-stat {
  font-family: var(--font-mono);
  font-size: var(--text-stat);
  font-weight: var(--weight-bold);
  line-height: 1;
  letter-spacing: var(--tracking-tight);
}

.text-eyebrow {
  font-family: var(--font-primary);
  font-size: var(--text-xs);
  font-weight: var(--weight-semibold);
  letter-spacing: var(--tracking-widest);
  text-transform: uppercase;
  color: var(--text-tertiary);
}

.text-label {
  font-size: var(--text-small);
  color: var(--text-secondary);
  line-height: var(--leading-relaxed);
}

/* Color utilities */
.text-accent    { color: var(--text-accent); }
.text-cyan      { color: var(--cyan); }
.text-secondary { color: var(--text-secondary); }
.text-tertiary  { color: var(--text-tertiary); }
.text-mono      { font-family: var(--font-mono); }

/* Product color utilities */
.text-aero { color: var(--color-aero); }
.text-aqua { color: var(--color-aqua); }
.text-cryo { color: var(--color-cryo); }

/* Gradient text */
.text-gradient {
  background: linear-gradient(135deg, #ffffff 0%, var(--text-secondary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.text-gradient--cyan {
  background: linear-gradient(135deg, #ffffff 0%, var(--cyan) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ===== ACCESSIBILITY ===== */
.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;
}

:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
}

/* ===== SELECTION ===== */
::selection {
  background: var(--cyan);
  color: #000;
}

/* ===== SCROLLBAR ===== */
::-webkit-scrollbar {
  width: 5px;
  height: 5px;
}
::-webkit-scrollbar-track {
  background: var(--bg-primary);
}
::-webkit-scrollbar-thumb {
  background: var(--border-strong);
  border-radius: 3px;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--cyan);
}

/* ===== 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;
  }

  [data-animate] {
    opacity: 1 !important;
    transform: none !important;
  }
}