/* =================================================
   Alisa Avduli
   Date: October 2026
   Introduction to Web Design and Computer Principles
   NYU London - Fall 2026
   Project description: Assignment 06 - Grids & Advanced CSS
   ================================================= */

/* ===== 1. Modern CSS reset ===== */
*, *::before, *::after {
    box-sizing: border-box;
}

body {
    margin: 0;
    line-height: 1.5;
}

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

/* ===== 2. Outer grid: page skeleton with named areas ===== */
body {
    display: grid;
    min-height: 100vh;
    grid-template-rows: auto 1fr auto;
    grid-template-areas:
        "header"
        "main"
        "footer";
    font-family: "Open Sans", Helvetica, Arial, sans-serif;
    font-size: 1rem;
    color: #1F2933;
    background-color: #ffffff;
}

header { grid-area: header; }
main   { grid-area: main; }
footer { grid-area: footer; }

/* ===== 3. Inner grid: mobile-first single column ===== */
main {
    display: grid;
    grid-template-columns: minmax(0, 1fr);
    grid-template-areas:
        "hero"
        "main-content"
        "sidebar";
    align-content: start;
    gap: 1.5rem;
}

main > figure  { grid-area: hero; }
main > article { grid-area: main-content; }
main > aside   { grid-area: sidebar; }

/* ===== 4. Header & navigation (Flexbox) ===== */
header {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.75rem 1rem;
    padding: 1rem 1.5rem;
    background-color: #0B5563;
    color: #ffffff;
}

header > h1 {
    flex: 1;
    margin: 0;
    font-size: 1.5rem;
    line-height: 1.2;
}

header > nav {
    flex-basis: 100%;
}

nav > ul {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 15px;
    margin: 0;
    padding: 0;
    list-style: none;
}

nav > ul > li > a {
    padding: 0.375rem 0.625rem;
    font-weight: bold;
    text-decoration: none;
    border-radius: 4px;
}

/* Link states in LVHA order */
nav a:link {
    color: #ffffff;
}

nav a:visited {
    color: #ffffff;
}

nav a:hover {
    color: #1F2933;
    background-color: #E6F4F1;
}

nav a:focus,
nav a:active {
    color: #1F2933;
    background-color: #E6F4F1;
    outline: 2px solid #ffffff;
}

/* Attribute selector: marks the page you are on */
nav a[aria-current="page"] {
    border-bottom: 3px solid #E4572E;
    border-radius: 0;
}

/* ===== 5. Inline SVG logo (colours come from CSS) ===== */
header > a {
    flex: none;
    display: block;
    line-height: 0;
    border-radius: 4px;
}

header svg {
    width: 56px;
    height: 56px;
}

header svg circle {
    fill: none;
    stroke: #DC241F;
    stroke-width: 20px;
    transition: stroke-width 0.2s ease;
}

header svg rect {
    fill: #0019A8;
}

header svg text {
    fill: #ffffff;
    font-family: Arial, Helvetica, sans-serif;
    font-weight: bold;
    font-size: 24px;
    text-anchor: middle;
    dominant-baseline: middle;
}

header > a:hover svg circle,
header > a:focus svg circle {
    stroke-width: 26px;
}

/* ===== 6. Hero image (Flexbox centers it on one axis) ===== */
main > figure {
    display: flex;
    justify-content: center;
    margin: 0;
    padding: 1.5rem 1rem;
    background-color: #E6F4F1;
}

/* ===== 7. Article text: child combinators & structural pseudo-classes ===== */
main > article {
    padding: 0 1.5rem;
}

article > h2 {
    margin: 0 0 1rem;
    font-size: 2rem;
    line-height: 1.2;
}

article > h2:first-child {
    margin-top: 0;
}

article > p {
    max-width: 65ch;
}

/* Lead paragraph: first direct paragraph of the main article */
main > article > p:first-of-type {
    padding-left: 1rem;
    border-left: 4px solid #E4572E;
    font-size: 1.25rem;
    font-weight: bold;
}

/* ===== 8. Nested auto-fit grid for the cards on the Response page ===== */
article > div {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 1.5rem;
    margin-top: 1.5rem;
}

article > div > article {
    padding: 1rem 1.25rem;
    border: 2px solid #0B5563;
    border-radius: 0.5rem;
}

article > div > article:nth-child(even) {
    background-color: #E6F4F1;
}

article > div > article > h3 {
    margin-top: 0;
    color: #0B5563;
}

/* ===== 9. Sidebar ===== */
main > aside {
    margin: 0 1.5rem 1.5rem;
    padding: 1.25rem 1.5rem;
    background-color: #E6F4F1;
    border-radius: 0.5rem;
}

aside > h3 {
    margin: 0 0 0.5rem;
    font-size: 1.25rem;
    color: #0B5563;
}

aside > h3:first-child {
    margin-top: 0;
}

aside > ul {
    margin: 0;
    padding-left: 1.25rem;
}

/* ===== 10. Footer ===== */
footer {
    padding: 1rem 1.5rem;
    background-color: #0B5563;
    color: #ffffff;
    text-align: center;
}

footer > h3 {
    margin: 0 0 0.25rem;
}

footer > p {
    margin: 0.25rem 0;
    font-size: 0.875rem;
}

footer > p:last-child {
    font-style: italic;
}

/* ===== 11. Desktop: inner grid becomes two columns ===== */
@media (min-width: 768px) {
    header {
        padding: 1.25rem 3rem;
    }

    header > h1 {
        font-size: 1.75rem;
    }

    header > nav {
        flex-basis: auto;
    }

    nav > ul {
        justify-content: flex-end;
    }

    main {
        grid-template-columns: 2fr 1fr;
        grid-template-areas:
            "hero hero"
            "main-content sidebar";
        gap: 2rem;
    }

    main > article {
        padding: 0 0 2rem 3rem;
    }

    main > aside {
        align-self: start;
        margin: 0 3rem 2rem 0;
    }
}