/* This is a comment */

:root {
    --primary: hsl(195, 60%, 35%);
}

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

body {
    margin: 0;
    padding: 0;
    background-color: hsl(210, 20%, 95%);
    color: #1a1a2e;
    font-family: 'Sekuya', Georgia, serif;
    line-height: 1.7;
}

nav {
    background-color: hsl(195, 60%, 35%);
    color: #ffffff;
    padding: 0.8rem 2rem;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
}

nav a {
    color: #ffffff;
    text-decoration: none;
    font-size: 0.95rem;
    letter-spacing: 0.04em;
    display: inline-block;
    padding: 2pt 0;
}

nav a:hover {
    color: hsl(195, 50%, 85%);
    text-decoration: underline;
}

#main-header {
    background-color: hsl(195, 60%, 35%);
    color: #ffffff;
    text-align: center;
    padding: 3rem 1rem 2.5rem;
    font-family: 'Sekuya', sans-serif;
}

#main-header h1 {
    margin: 0;
    font-size: 2.5rem;
    letter-spacing: 0.05em;
    text-decoration: underline;
}

#small-header {
    background-color: hsl(180, 50%, 80%, 0.5);
    color: #1a1a2e;
    padding: 1.5rem 2rem;
    border-bottom: 3px solid hsl(195, 60%, 35%);
}

#small-header h2 {
    margin: 0 0 0.25rem;
    font-size: 1.4rem;
}

#small-header h3 {
    margin: 0.2rem 0 0;
    font-size: 0.95rem;
    color: hsl(210, 10%, 45%);
    font-weight: normal;
}

main {
    background-color: color-mix(
        in display-p3,
        color(display-p3 0.94 0.97 0.99) 80%,
        color(display-p3 0.70 0.88 0.95) 20%
    );
    padding: 2.5rem 1rem;
}

article {
    max-width: 860px;
    margin-left: auto;
    margin-right: auto;
    background-color: #ffffff;
    border-radius: 14px;
    overflow: hidden;
    box-shadow: 0 4px 24px rgba(0, 0, 0, 0.08);
    border-width: 1px;
    border-style: solid;
    border-color: hsl(210, 15%, 82%);
}

section {
    padding-top: 1.5rem;
    padding-bottom: 1.5rem;
    padding-left: 2rem;
    padding-right: 2rem;
    border-bottom: 1px solid hsl(210, 15%, 82%);
}

section:last-of-type {
    border-bottom: none;
}

section h2 {
    color: hsl(195, 60%, 35%);
    font-size: 1.15rem;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    margin-top: 0;
    margin-bottom: 1rem;
    border-bottom: 2px solid hsl(195, 50%, 85%);
    padding-bottom: 0.4rem;
}

section h3 {
    font-size: 1rem;
    color: hsl(210, 10%, 45%);
}

ol, ul {
    padding-left: 1.4rem;
    margin: 0.5rem 0 1rem;
}

li {
    margin-bottom: 0.3rem;
}

.comment {
    background-color: hsl(210, 30%, 97%);
    border-left: 4px solid hsl(195, 60%, 35%);
    margin: 0.6rem 0;
    padding: 0.7rem 1rem;
    border-radius: 0 8px 8px 0;

    /* Nested selector */
    & p {
        margin: 0;
        font-size: 0.95rem;
    }
}

#diagram {
    display: block;
    width: 80%;
    max-width: 420px;
    min-width: 200px;
    height: auto;
    border-width: 2px;
    border-style: solid;
    border-color: hsl(210, 15%, 82%);
    border-radius: 10px;
    padding: 4pt;
    margin-left: auto;
    margin-right: auto;
    position: sticky;
    top: 64px;
}


#video {
    display: block;
    width: 90%;
    max-width: 560px;
    min-width: 240px;
    height: auto;
    padding: 0.5em;
    margin-left: auto;
    margin-right: auto;
    border-radius: 8px;
    position: static;
}

#audio {
    display: block;
    max-width: 5in;
    min-width: 3in;
    width: 90%;
    padding-top: 0.4rem;
    padding-bottom: 0.4rem;
    padding-left: 0;
    padding-right: 0;
    margin-left: auto;
    margin-right: auto;
}

details {
    font-size: 0.875rem;
    color: hsl(210, 10%, 45%);
    margin-top: 0.5rem;
    text-align: center;
}

hr {
    border: none;
    border-top: 1px solid hsl(210, 15%, 82%);
    margin: 0;
}

footer {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1.5rem;
    padding: 2.5rem 1rem;
    max-width: 860px;
    margin-left: auto;
    margin-right: auto;
}

footer h2 {
    color: hsl(195, 60%, 35%);
    font-size: 1.5rem;
    margin: 0;
    text-align: center;
}

/* This is a button */
#load-comments {
    display: block;
    margin-left: auto;
    margin-right: auto;
    padding: 0.6em 1.8em;
    font-size: 1rem;
    font-family: inherit;
    background-color: hsl(195, 60%, 35%);
    color: #ffffff;
    border: none;
    border-radius: 8px;
    cursor: pointer;
}

#load-comments:hover {
    background-color: hsl(195, 60%, 25%);
}

#load-comments:active {
    background-color: hsl(195, 60%, 18%);
}

fieldset {
    border: 2px solid hsl(210, 15%, 82%);
    border-radius: 12px;
    padding: 1.5rem 2rem;
    width: 100%;
    max-width: 600px;
    background-color: #ffffff;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.08);
}

legend {
    color: hsl(195, 60%, 35%);
    font-weight: bold;
    padding: 0 0.6rem;
    font-size: 1rem;
    letter-spacing: 0.03em;
}

/* Comment grid layout */
form {
    display: grid;
    grid-template-columns: auto 1fr;
    align-items: center;
    gap: 0.75rem 1.5rem;
}

form label {
    font-size: 0.875rem;
    color: hsl(210, 10%, 45%);
    font-weight: 700;
    white-space: nowrap;
}

form input[type="text"],
form input[type="date"],
form select,
input[list] {
    padding: 0.4rem 0.6rem;
    border: 1px solid hsl(210, 15%, 82%);
    border-radius: 5px;
    font-family: inherit;
    font-size: 0.9rem;
    background-color: hsl(210, 20%, 99%);
    color: #1a1a2e;
    width: 100%;
}

form input[type="text"]:hover,
form input[type="date"]:hover,
form select:hover,
input[list]:hover {
    border-color: hsl(195, 60%, 35%);
}

form textarea,
form input[type="submit"] {
    grid-column: 1 / -1;
}

form textarea {
    padding: 0.5rem 0.6rem;
    border: 1px solid hsl(210, 15%, 82%);
    border-radius: 5px;
    font-family: inherit;
    font-size: 0.9rem;
    min-height: 90px;
    resize: vertical;
    width: 100%;
    background-color: hsl(210, 20%, 99%);
    color: #1a1a2e;
}

form textarea:hover {
    border-color: hsl(195, 60%, 35%);
}

form input[type="submit"] {
    display: inline-block;
    padding: 0.55em 2em;
    background-color: hsl(195, 60%, 35%);
    color: #ffffff;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-family: inherit;
    cursor: pointer;
    justify-self: start;
}

form input[type="submit"]:hover {
    background-color: hsl(195, 60%, 25%);
}

form input[type="submit"]:active {
    background-color: hsl(195, 60%, 18%);
}

/* Responsive: phone */
@media (max-width: 600px) {
    #main-header h1 {
        font-size: 1.8rem;
    }

    section {
        padding-left: 1rem;
        padding-right: 1rem;
    }

    footer {
        padding: 1.5rem 0.75rem;
    }

    form {
        grid-template-columns: 1fr;
    }

    form textarea,
    form input[type="submit"] {
        grid-column: 1;
    }

    #audio {
        min-width: 0;
        max-width: 100%;
    }

    #video {
        min-width: 0;
    }
}

/* Responsive: tablet */
@media (min-width: 601px) and (max-width: 900px) {
    main {
        padding: 1.5rem 0.75rem;
    }

    article {
        border-radius: 10px;
    }
}

/* Child Combinator */
details > summary {
    cursor: pointer;
    font-weight: 600;
    color: var(--primary, teal);
}

h2 ~ h3 {
    opacity: 0.85;
}

/* Styles only the h3 directly after an h2 ("Separation Meeting" subtitle) */
h2 + h3 {
    font-style: italic;
}

/* Combining Two Selectors*/
div.comment:hover {
    background-color: hsl(210, 30%, 93%);
}

fieldset:has(:focus) {
    border-color: hsl(195, 60%, 35%);
    box-shadow: 0 0 0 3px hsl(195, 50%, 85%);
}

section:has(img) {
    text-align: center;
}