/*
 * base.css
 * Global reset, CSS variables, typography, layout, buttons, and spacing utilities.
 */


/* ─── Fonts ─────────────────────────────────────────────────── */

@font-face {
    font-family: 'Inter';
    src: url('../fonts/Inter-Latin.woff2') format('woff2');
    font-weight: 100 900;
    font-style: normal;
    font-display: swap;
    unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA,
                   U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122,
                   U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}


/* ─── CSS Variables ─────────────────────────────────────────── */

:root {

    /* Colors */
    --color-primary:   #1F2A6B;
    --color-secondary: #1E6EBB;
    --color-accent:    #2FA8E0;
    --color-text:      #111111;
    --color-bg-light:  #F5F7FA;
    --color-border:    #E5E7EB;
    --color-white:     #FFFFFF;

    /* Layout */
    --container-width:            1400px;
    --container-padding-desktop:  32px;
    --container-padding-tablet:   24px;
    --container-padding-mobile:   16px;
}


/* ─── Reset ─────────────────────────────────────────────────── */

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

html {
    font-size: 100%;
    scroll-behavior: smooth;
}

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

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

ul,
ol {
    padding-left: 1.25rem;
}


/* ─── Body ──────────────────────────────────────────────────── */

body {
    font-family: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    font-size: 1rem;
    line-height: 1.6;
    color: var(--color-text);
    background-color: #ffffff;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body.menu-open {
    overflow: hidden;
}


/* ─── Container ─────────────────────────────────────────────── */

.container {
    max-width: var(--container-width);
    margin-inline: auto;
    padding-inline: var(--container-padding-desktop);
}

@media (max-width: 1024px) {
    .container {
        padding-inline: var(--container-padding-tablet);
    }
}

@media (max-width: 640px) {
    .container {
        padding-inline: var(--container-padding-mobile);
    }
}


/* ─── Headings ──────────────────────────────────────────────── */

h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    color: var(--color-primary);
}

h1 { font-size: clamp(2rem,    4vw, 3rem);    }
h2 { font-size: clamp(1.5rem,  3vw, 2.25rem); }
h3 { font-size: clamp(1.25rem, 2vw, 1.75rem); }
h4 { font-size: 1.25rem; }
h5 { font-size: 1.125rem; }
h6 { font-size: 1rem; }


/* ─── Paragraphs ────────────────────────────────────────────── */

p {
    max-width: 70ch;
    color: var(--color-text);
}

p + p {
    margin-top: 1rem;
}


/* ─── Links ─────────────────────────────────────────────────── */

a {
    color: var(--color-secondary);
    text-decoration: none;
    transition: color 0.2s ease;
}

a:hover,
a:focus-visible {
    color: var(--color-accent);
    text-decoration: underline;
}


/* ─── Accessibility ─────────────────────────────────────────── */

a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible,
select:focus-visible {
    outline: 2px solid var(--color-accent);
    outline-offset: 2px;
}


/* ─── Buttons ───────────────────────────────────────────────── */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.625rem 1.5rem;
    font-size: 0.9375rem;
    font-weight: 600;
    line-height: 1;
    border: 2px solid transparent;
    border-radius: 4px;
    cursor: pointer;
    text-decoration: none;
    transition: background-color 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}

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

.btn-primary:hover,
.btn-primary:focus-visible {
    background-color: var(--color-secondary);
    border-color: var(--color-secondary);
    color: #ffffff;
    text-decoration: none;
}

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

.btn-outline:hover,
.btn-outline:focus-visible {
    background-color: var(--color-primary);
    color: #ffffff;
    text-decoration: none;
}


/* ─── Spacing Utilities ─────────────────────────────────────── */

.section {
    padding-block: 4rem;
}

.section-lg {
    padding-block: 6rem;
}

@media (max-width: 768px) {
    .section    { padding-block: 3rem; }
    .section-lg { padding-block: 4rem; }
}

body {
    background-color: #111;
}