/* ==========================================================================
   base.css — reset, defaults, typography for dash1x.research.my
   ========================================================================== */

*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

html {
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  font-size: 16px;
  line-height: 1.5;
  tab-size: 4;
}

body {
  background-color: var(--bg-black);
  color: var(--text-white);
  font-family: var(--font-body);
  font-size: 14px;
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
}

::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: var(--bg-black); }
::-webkit-scrollbar-thumb { background: var(--border-light); border-radius: 0; }
::-webkit-scrollbar-thumb:hover { background: var(--text-dim); }
* { scrollbar-width: thin; scrollbar-color: var(--border-light) var(--bg-black); }

::selection { background-color: rgba(29, 158, 117, 0.3); color: var(--text-white); }

a {
  color: var(--accent-teal);
  text-decoration: none;
  transition: color var(--transition-fast);
}
a:hover { color: var(--text-white); }

img, svg { display: block; max-width: 100%; }
ul, ol { list-style: none; }

button, input, select, textarea {
  font-family: inherit; font-size: inherit; color: inherit;
  background: none; border: none; outline: none;
}
button { cursor: pointer; }

table { border-collapse: collapse; border-spacing: 0; }

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.2;
  color: var(--text-white);
}
h1 { font-size: 36px; letter-spacing: -0.02em; }
h2 { font-size: 26px; letter-spacing: -0.01em; }
h3 { font-size: 20px; }
h4 { font-size: 16px; }
h5 { font-size: 14px; }
h6 { font-size: 13px; text-transform: uppercase; letter-spacing: 0.06em; color: var(--text-muted); }

p {
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.7;
  color: var(--text-gray);
}
small { font-size: 12px; color: var(--text-muted); }

code, pre { font-family: var(--font-mono); }
code {
  font-size: 13px;
  color: var(--accent-teal);
  background: var(--bg-elevated);
  padding: 2px 6px;
  border-radius: 2px;
}
pre {
  background: var(--bg-dark);
  border: 1px solid var(--border);
  padding: var(--space-16);
  overflow-x: auto;
  font-size: 13px;
  line-height: 1.6;
  border-radius: 4px;
}
pre code { background: none; padding: 0; color: inherit; }

.text-white   { color: var(--text-white); }
.text-gray    { color: var(--text-gray); }
.text-muted   { color: var(--text-muted); }
.muted        { color: var(--text-muted); }
.text-dim     { color: var(--text-dim); }
.text-teal    { color: var(--accent-teal); }
.text-blue    { color: var(--accent-blue); }
.text-error   { color: var(--color-error); }
.text-success { color: var(--color-success); }

.font-heading { font-family: var(--font-heading); }
.font-body    { font-family: var(--font-body); }
.font-mono    { font-family: var(--font-mono); }

.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;
}

@media (max-width: 1024px) { html { font-size: 15px; } }
@media (max-width: 768px) {
  html { font-size: 14px; }
  h1 { font-size: 28px; }
  h2 { font-size: 22px; }
  h3 { font-size: 18px; }
}