/* =========================================================
   base.css — AEO Checker shared reset and design tokens
   ========================================================= */

/* ----- Design tokens ----- */
:root {
    /* Brand colors */
    --color-primary:       #1e3a5f;
    --color-primary-light: #2563eb;
    --color-success:       #16a34a;
    --color-warn:          #d97706;
    --color-danger:        #dc2626;
    --color-white:         #ffffff;

    /* Gray scale */
    --color-gray-50:  #f8fafc;
    --color-gray-100: #f1f5f9;
    --color-gray-200: #e2e8f0;
    --color-gray-300: #cbd5e1;
    --color-gray-400: #94a3b8;
    --color-gray-500: #64748b;
    --color-gray-600: #475569;
    --color-gray-700: #334155;
    --color-gray-800: #1e293b;
    --color-gray-900: #0f172a;

    /* Typography scale */
    --font-size-sm:   0.875rem;  /* 14px */
    --font-size-base: 1rem;      /* 16px */
    --font-size-lg:   1.125rem;  /* 18px */
    --font-size-xl:   1.25rem;   /* 20px */
    --font-size-2xl:  1.5rem;    /* 24px */
    --font-size-3xl:  2rem;      /* 32px */

    /* Spacing — 4 px increments */
    --space-1:  4px;
    --space-2:  8px;
    --space-3:  12px;
    --space-4:  16px;
    --space-5:  20px;
    --space-6:  24px;
    --space-7:  28px;
    --space-8:  32px;
    --space-9:  36px;
    --space-10: 40px;
    --space-11: 44px;
    --space-12: 48px;
    --space-13: 52px;
    --space-14: 56px;
    --space-15: 60px;
    --space-16: 64px;
}

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

html {
    font-size: 100%;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    font-size: var(--font-size-base);
    line-height: 1.5;
    color: var(--color-gray-900);
    background: var(--color-white);
}

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

input,
button,
textarea,
select {
    font: inherit;
}