/* Base Styles */
html {
    font-family: 'Roboto', 'Helvetica Neue', Arial, sans-serif;
    line-height: 20px;
    letter-spacing: 0.01em;
    color: var(--gray-darker);
    box-sizing: border-box;
    height: 100%;
}

body {
    line-height: 20px;
    margin: 0;
    padding: 0;
    min-height: 100vh;
    background-color: var(--gray-lightest);
}

*, *:before, *:after {
    box-sizing: inherit;
}

/* Typography */
h1 {
    font-size: 2rem;
    font-weight: 400;
    margin-bottom: 1rem;
    color: var(--gray-darker);
}

h2 {
    font-size: 1.5rem;
    font-weight: 400;
    margin-bottom: 0.875rem;
    color: var(--gray-darker);
}

h3 {
    font-size: 1.25rem;
    font-weight: 500;
    margin-bottom: 0.75rem;
    color: var(--gray-darker);
}

p, .text-body {
    font-size: 1rem;
    line-height: 1.5;
    max-width: 800px;
    margin-bottom: 1rem;
}

.text-small {
    font-size: 0.875rem;
}

.text-upper {
    text-transform: uppercase;
    letter-spacing: 0.04em;
    font-weight: 400;
}

/* Layout System */
.vk-layout {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

.vk-layout--app-main {
    background-color: var(--gray-lightest);
}