/* BiTA Base Styles - Reset & Typography */

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

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-regular);
    line-height: var(--line-height-normal);
    color: var(--text-light-primary);
    background-color: var(--bg-light);
    overflow-x: hidden;
}

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

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

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

/* Lists */
ul, ol {
    list-style: none;
}

/* Buttons */
button {
    font-family: inherit;
    font-size: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

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

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: var(--font-weight-bold);
    line-height: var(--line-height-tight);
    letter-spacing: var(--letter-spacing-tight);
    color: inherit;
}

h1 {
    font-size: var(--font-size-6xl);
    font-weight: var(--font-weight-extrabold);
}

h2 {
    font-size: var(--font-size-4xl);
}

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

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

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

/* Utility Classes */
.text-gradient {
    background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-accent-light) 50%, var(--color-accent) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

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

/* Section Headers */
.section-header {
    text-align: center;
    margin-bottom: var(--space-16);
}

.section-label {
    display: inline-block;
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    letter-spacing: var(--letter-spacing-wider);
    text-transform: uppercase;
    color: var(--color-accent);
    margin-bottom: var(--space-4);
}

.section-title {
    font-size: var(--font-size-4xl);
    font-weight: var(--font-weight-bold);
    margin-bottom: var(--space-4);
}

.section-subtitle {
    font-size: var(--font-size-lg);
    color: var(--text-light-secondary);
    max-width: 600px;
    margin: 0 auto;
}

/* Dark section overrides */
.hero, .features, .pricing, .final-cta {
    background-color: var(--bg-dark);
    color: var(--text-dark-primary);
}

.hero .section-subtitle,
.features .section-subtitle,
.pricing .section-subtitle {
    color: var(--text-dark-secondary);
}

/* Light section styling */
.how-it-works, .testimonials {
    background-color: var(--bg-light);
    color: var(--text-light-primary);
}

/* Scrollbar Styling */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--color-primary);
}

::-webkit-scrollbar-thumb {
    background: var(--color-accent);
    border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--color-accent-light);
}