/* ==========================================================================
   Base Styles - CSS Custom Properties, Reset, Typography
   ========================================================================== */

/* --- CSS Custom Properties (Color Theme) --- */
:root {
    --color-primary: #043477;
    --color-primary-dark: #032a5f;
    --color-secondary: #faa619;
    --color-secondary-dark: #e89a15;
    --color-tertiary: #ffffff;
    --color-text: #333333;
    --color-text-light: #6c757d;
    --color-border: #e0e0e0;
    --color-success: #28a745;
    --color-error: #dc3545;
    --color-warning: #ffc107;
    --color-info: #17a2b8;

    --color-bg: #f5f7fa;
    --color-bg-dark: #e9ecef;

    --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen,
        Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
    --font-size-base: 16px;
    --font-size-sm: 0.875rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;

    --line-height: 1.6;
    --border-radius: 6px;
    --border-radius-lg: 10px;
    --transition: 0.2s ease-in-out;
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.12);
}

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

html {
    font-size: var(--font-size-base);
    -webkit-text-size-adjust: 100%;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    font-size: 1rem;
    line-height: var(--line-height);
    color: var(--color-text);
    background-color: var(--color-bg);
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

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

a {
    color: var(--color-primary);
    text-decoration: none;
    transition: color var(--transition);
}

a:hover {
    color: var(--color-secondary);
}

ul,
ol {
    list-style: none;
}

table {
    border-collapse: collapse;
    width: 100%;
}

/* --- Typography --- */
h1, h2, h3, h4, h5, h6 {
    color: var(--color-primary);
    font-weight: 600;
    line-height: 1.3;
    margin-bottom: 0.5em;
}

h1 {
    font-size: 2rem;
}

h2 {
    font-size: 1.75rem;
}

h3 {
    font-size: 1.5rem;
}

h4 {
    font-size: 1.25rem;
}

h5 {
    font-size: 1.125rem;
}

h6 {
    font-size: 1rem;
}

p {
    margin-bottom: 1rem;
}

small {
    font-size: var(--font-size-sm);
}

strong {
    font-weight: 600;
}

code {
    font-family: 'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, monospace;
    font-size: 0.875em;
    background-color: var(--color-bg-dark);
    padding: 0.125em 0.375em;
    border-radius: var(--border-radius);
}