:root {
    --font-heading: system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
    --font-body: system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;

    --c-white: #ffffff;
    --c-primary: #1f2a44;
    --c-secondary: #6a8f7a;
    --c-accent: #d9a441;
    --c-bg: #f6f7fb;
    --c-text-light: #5b6472;
    --c-error: #c0392b;

    --sp-xs: 0.5rem;
    --sp-sm: 1rem;
    --sp-md: 1.5rem;
    --sp-lg: 3rem;
    --sp-xl: 4.5rem;

    --br-sm: 8px;
    --br-md: 12px;
    --br-lg: 18px;

    --transition: 0.25s ease;
}

* {
    box-sizing: border-box;
}

html,
body {
    margin: 0;
    padding: 0;
}

body {
    font-family: var(--font-body);
    color: var(--c-primary);
    background: var(--c-white);
    line-height: 1.6;
}

a {
    color: inherit;
    text-decoration: none;
}

img {
    max-width: 116%;
    display: block;
}

ul {
    margin: 0;
    padding: 0;
    list-style: none;
}

.container {
    width: min(1100px, 100% - 2rem);
    margin: 0 auto;
}

.btn {
    display: inline-block;
    padding: 12px 18px;
    border-radius: var(--br-sm);
    background: var(--c-primary);
    color: var(--c-white);
    transition: var(--transition);
    border: 1px solid var(--c-primary);
}

.btn:hover {
    filter: brightness(1.05);
}

.loading-spinner {
    padding: var(--sp-lg) 0;
    text-align: center;
    color: var(--c-text-light);
}