/* ===== Base, variables, reset, container, scrollbar ===== */
:root {
    --color-primary: #9E0A24;
    --color-primary-hover: #B80E2C;
    --color-primary-dark: #7A0719;
    --color-white: #FFFFFF;
    --color-dark: #222222;
    --color-card: #2A2A2A;
    --color-card-border: rgba(255, 255, 255, 0.08);
    --color-blue: #0A4A9E;
    --color-blue-hover: #0D5DC4;
    --color-overlay: rgba(0, 0, 0, 0.35);
    --color-header-bg: transparent;
    --color-nav-bg: transparent;
    --color-text-muted: rgba(255, 255, 255, 0.85);
    --color-text-dim: rgba(255, 255, 255, 0.65);

    --container: 1280px;
    --header-h: 110px;
    --nav-h: 64px;

    --radius-sm: 6px;
    --radius-md: 8px;
    --radius-pill: 999px;

    --font-main: 'Oswald', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;

    --transition: 0.25s ease;
}

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

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

html {
    scroll-behavior: smooth;
    scrollbar-width: thin;
    scrollbar-color: rgba(158, 10, 36, 0.6) transparent;
    overflow-y: overlay;
}

section[id] {
    scroll-margin-top: 120px;
}

::-webkit-scrollbar {
    width: 10px;
    height: 10px;
    background: transparent;
}

::-webkit-scrollbar-track {
    background: transparent;
}

::-webkit-scrollbar-thumb {
    background-color: rgba(158, 10, 36, 0.6);
    border-radius: 8px;
    border: 2px solid transparent;
    background-clip: padding-box;
    transition: background-color 0.2s ease;
}

::-webkit-scrollbar-thumb:hover {
    background-color: rgba(158, 10, 36, 0.9);
    background-clip: padding-box;
}

::-webkit-scrollbar-corner {
    background: transparent;
}

body {
    font-family: var(--font-main);
    color: var(--color-white);
    background: #1a1310;
    line-height: 1.4;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

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

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

.container {
    width: 100%;
    max-width: var(--container);
    margin: 0 auto;
    padding: 0 32px;
}


/* ===== Buttons ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-family: inherit;
    font-weight: 500;
    font-size: 14px;
    line-height: 1;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    padding: 14px 36px;
    border: 2px solid transparent;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: background-color var(--transition), border-color var(--transition), color var(--transition), transform var(--transition);
    white-space: nowrap;
    user-select: none;
}

.btn--primary {
    background: var(--color-primary);
    color: var(--color-white);
    border-color: var(--color-primary);
}

.btn--primary:hover {
    background: var(--color-primary-hover);
    border-color: var(--color-primary-hover);
}

.btn--outline {
    background: transparent;
    color: var(--color-white);
    border-color: var(--color-primary);
}

.btn--outline:hover {
    background: var(--color-primary);
}

.btn--lg {
    font-size: 16px;
    padding: 20px 48px;
    letter-spacing: 0.08em;
    border-radius: var(--radius-pill);
}

.btn:active {
    transform: translateY(1px);
}