/* ==========================================================================
   FIELDVOICE AI - BASE STYLES & RESET
   ========================================================================== */

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-family);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  font-weight: 400;
  overflow-x: hidden;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

main {
  flex: 1 0 auto;
}

/* Typography Hierarchy */
h1, h2, h3, h4, h5, h6 {
  color: var(--text-primary);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.025em;
  margin-bottom: 0.75rem;
}

h1 {
  font-size: clamp(2.5rem, 5vw, 4rem);
  letter-spacing: -0.035em;
  font-weight: 800;
}

h2 {
  font-size: clamp(2rem, 3.5vw, 2.75rem);
  letter-spacing: -0.03em;
}

h3 {
  font-size: clamp(1.4rem, 2.2vw, 1.85rem);
}

h4 {
  font-size: 1.25rem;
  font-weight: 600;
}

p {
  color: var(--text-secondary);
  margin-bottom: 1.25rem;
  font-size: 1.05rem;
  line-height: 1.7;
}

p.lead {
  font-size: clamp(1.15rem, 2vw, 1.35rem);
  color: var(--text-secondary);
  font-weight: 400;
  line-height: 1.6;
}

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

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

ul, ol {
  list-style: none;
}

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

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

button {
  cursor: pointer;
}

/* Selection Highlight */
::selection {
  background: var(--accent-light);
  color: var(--accent-primary);
}

/* Scrollbar styling */
::-webkit-scrollbar {
  width: 10px;
  height: 10px;
}

::-webkit-scrollbar-track {
  background: #F1F3F5;
}

::-webkit-scrollbar-thumb {
  background: #CBD5E1;
  border-radius: var(--radius-pill);
}

::-webkit-scrollbar-thumb:hover {
  background: #94A3B8;
}

/* Utility Helper Classes */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }
.mx-auto { margin-left: auto; margin-right: auto; }
.bold { font-weight: 600; }
.mono { font-family: var(--font-mono); }
.text-accent { color: var(--accent-primary); }
.text-muted { color: var(--text-muted); }
.text-success { color: var(--color-success); }
.bg-surface { background-color: var(--bg-surface); }
.bg-white { background-color: #FFFFFF; }
.bg-dark { background-color: var(--bg-dark); color: var(--text-on-dark); }