/* ================================
   BASE STYLES - ENTERPRISE THEME
   ================================ */

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-secondary);
    font-size: 1rem;
    line-height: 1.7;
    color: var(--neutral-700);
    background: var(--bg-primary);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

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

ul,
ol {
    list-style: none;
}

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

/* Typography */
h1,
h2,
h3,
h4,
h5,
h6 {
    font-family: var(--font-primary);
    font-weight: 700;
    color: var(--neutral-900);
    line-height: 1.2;
}

h1 {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 800;
    letter-spacing: -0.02em;
}

h2 {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 700;
    letter-spacing: -0.02em;
}

h3 {
    font-size: clamp(1.25rem, 2vw, 1.5rem);
    font-weight: 600;
}

h4 {
    font-size: 1.125rem;
    font-weight: 600;
}

p {
    color: var(--neutral-600);
    line-height: 1.8;
}

.lead {
    font-size: 1.25rem;
    color: var(--neutral-600);
    line-height: 1.7;
}

/* Container */
.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

/* Section Spacing */
.section {
    padding: var(--space-24) 0;
}

.section-lg {
    padding: var(--space-32) 0;
}

/* Section Header */
.section-header {
    text-align: center;
    max-width: 720px;
    margin: 0 auto var(--space-16);
}

.section-header .overline {
    display: inline-block;
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--primary-600);
    margin-bottom: var(--space-3);
}

.section-header h2 {
    margin-bottom: var(--space-4);
}

.section-header p {
    font-size: 1.125rem;
    max-width: 600px;
    margin: 0 auto;
}

/* Highlight Text */
.text-primary {
    color: var(--primary-600);
}

/* Background Variations */
.bg-white {
    background: var(--bg-primary);
}

.bg-light {
    background: var(--bg-secondary);
}

.bg-dark {
    background: var(--neutral-900);
}

.bg-dark h2,
.bg-dark h3,
.bg-dark h4 {
    color: var(--white);
}

.bg-dark p {
    color: var(--neutral-300);
}

/* Selection */
::selection {
    background: var(--primary-500);
    color: white;
}

/* Focus States */
:focus-visible {
    outline: 2px solid var(--accent-500);
    outline-offset: 2px;
}

/* Utility Classes */
.text-center {
    text-align: center;
}

.mt-4 {
    margin-top: var(--space-4);
}

.mt-8 {
    margin-top: var(--space-8);
}

.mt-12 {
    margin-top: var(--space-12);
}

.mb-4 {
    margin-bottom: var(--space-4);
}

.mb-8 {
    margin-bottom: var(--space-8);
}