:root {
    --primary: #000000;
    --secondary: #ffffff;
    --tertiary: #f2f2f2;

    --background: #ffffff;
    --surface: #f7f7f7;

    --text: #000000;
    --text-muted: #666666;
    --text-inverse: #ffffff;

    --border: #d9d9d9;

    --success: #2e7d32;
    --warning: #ed6c02;
    --error: #d32f2f;

    --font-family: Arial, Helvetica, sans-serif;

    --font-size-sm: 0.875rem;
    --font-size-md: 1rem;
    --font-size-lg: 1.25rem;
    --font-size-xl: 2rem;
    --font-size-2xl: 3rem;

    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-bold: 700;

    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 48px;
    --spacing-2xl: 96px;

    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 9999px;

    --header-height: 72px;

    --transition-fast: 150ms ease;
    --transition-normal: 300ms ease;

    --content-width: 1200px;
}

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

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

html {
    scroll-behavior: smooth;
}

body {
    width: 100%;
    min-height: 100dvh;
    overflow-x: hidden;
    background: var(--background);
    color: var(--text);
    font-family: var(--font-family);
    font-size: var(--font-size-md);
}

.site-header {
    position: fixed;
    top: 0;
    left: 0;
    z-index: 1000;
    width: 100%;
    height: var(--header-height);
    padding: 0 var(--spacing-lg);
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: var(--background);
    border-bottom: 1px solid var(--border);
}

.site-header__brand a {
    color: inherit;
    text-decoration: none;
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-medium);
}

.menu-button {
    width: 48px;
    height: 48px;
    padding: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid transparent;
    border-radius: var(--radius-md);
    background: transparent;
    color: var(--text);
    cursor: pointer;
    transition:
        background var(--transition-fast),
        color var(--transition-fast),
        transform var(--transition-fast);
}

.menu-button:hover {
    background: var(--primary);
    color: var(--text-inverse);
    transform: scale(1.05);
}

.menu-button:active {
    transform: scale(0.96);
}

.menu-button:focus-visible {
    outline: 2px solid var(--primary);
    outline-offset: 3px;
}

.menu-icon {
    width: 24px;
    height: 24px;
    background: currentColor;
    mask: url("/assets/menu.svg") center / contain no-repeat;
    -webkit-mask: url("/assets/menu.svg") center / contain no-repeat;
}

main {
    width: 100%;
}

.page {
    width: 100%;
    min-height: 100dvh;
    padding: var(--header-height) var(--spacing-lg) var(--spacing-lg);
    display: flex;
    align-items: center;
    justify-content: center;
}

.drawer {
    position: fixed;
    top: var(--spacing-md);
    right: var(--spacing-md);
    bottom: var(--spacing-md);
    z-index: 2000;
    width: min(400px,calc(100vw - (var(--spacing-md) * 2)));
    padding: var(--spacing-lg);
    border: 1px solid var(--border);
    border-radius: var(--radius-xl);
    background: var(--surface);
    transform: translateX(calc(100% + var(--spacing-md)));
    transition: transform var(--transition-normal);
    overflow-y: auto;
}

.drawer[data-open="true"] {
    transform: translateX(0);
}

.drawer__header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--spacing-xl);
}

.drawer__title {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-medium);
}

.drawer__close {
    width: 48px;
    height: 48px;
    border: 0;
    border-radius: var(--radius-md);
    background: transparent;
    color: var(--text);
    font-size: 2rem;
    cursor: pointer;
    transition:
        background var(--transition-fast),
        color var(--transition-fast),
        transform var(--transition-fast);
}

.drawer__close:hover {
    background: var(--primary);
    color: var(--text-inverse);
    transform: scale(1.05);
}

.drawer__close:active {
    transform: scale(.96);
}

.drawer__navigation {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.drawer__navigation a {
    color: var(--text);
    text-decoration: none;
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-medium);
}

.drawer-overlay {
    position: fixed;
    inset: 0;
    z-index: 1500;
    background: rgb(0 0 0 / .35);
    opacity: 0;
    visibility: hidden;
    transition:
        opacity var(--transition-normal),
        visibility var(--transition-normal);
}

.drawer-overlay[data-open="true"] {
    opacity: 1;
    visibility: visible;
}