/* ============================================
   iAgentMart — Base / Reset / Typography
   ============================================ */

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  scroll-padding-top: var(--nav-height);
}

body {
  font-family: var(--font-sans);
  font-size: var(--text-base);
  line-height: var(--leading-normal);
  color: var(--color-text);
  background-color: var(--color-bg);
  overflow-x: hidden;
}

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

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

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

ul, ol {
  list-style: none;
}

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

input, textarea, select {
  font: inherit;
  color: inherit;
}

/* --- Typography --- */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: var(--weight-bold);
  line-height: var(--leading-tight);
  color: var(--color-text);
}

h1 {
  font-size: var(--text-5xl);
  font-weight: var(--weight-extrabold);
  letter-spacing: -0.025em;
}

h2 {
  font-size: var(--text-4xl);
  font-weight: var(--weight-bold);
  letter-spacing: -0.02em;
}

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

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

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

p {
  color: var(--color-text-secondary);
  line-height: var(--leading-normal);
}

strong {
  font-weight: var(--weight-semibold);
}

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

code {
  font-family: var(--font-mono);
  font-size: 0.9em;
  padding: 0.15em 0.4em;
  background-color: var(--color-code-bg);
  color: var(--color-code-text);
  border-radius: var(--radius-sm);
}

pre {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  line-height: var(--leading-relaxed);
  background-color: var(--color-code-bg);
  color: var(--color-code-text);
  padding: var(--space-6);
  border-radius: var(--radius-md);
  overflow-x: auto;
  border: 1px solid var(--color-border-light);
}

pre code {
  padding: 0;
  background: none;
  font-size: inherit;
}

::selection {
  background-color: var(--color-primary-light);
  color: var(--color-primary);
}

/* --- 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-width: 0;
}

/* --- Focus styles --- */
:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

@media (max-width: 768px) {
  h1 { font-size: var(--text-4xl); }
  h2 { font-size: var(--text-3xl); }
  h3 { font-size: var(--text-xl); }
}

@media (max-width: 480px) {
  h1 { font-size: var(--text-3xl); }
  h2 { font-size: var(--text-2xl); }
}