/* ===========================
   ARGILLEUS MUSIC LIBRARY
=========================== */

@import url('https://fonts.googleapis.com/css2?family=EB+Garamond:wght@400;600;700&family=Source+Sans+3:wght@300;400;600&display=swap');

/* --- Root Variables --- */
:root {
    color-scheme: light;

    /* Typography */
    --font-serif: "EB Garamond", serif;
    --font-sans: "Source Sans 3", system-ui, -apple-system, sans-serif;

    /* Color Palette */
    --paper: #f8f6f1;
    --paper-dark: #efebe2;
    --surface: #ffffff;
    
    --text: #2f2b28;
    --text-muted: #595959;
    
    --accent: #1e3557;
    --accent-light: #385d90;
    
    --border: #d8d2c6;
    --border-light: #e6e1d7;

    /* Globals */
    --radius-sm: 3px;
    --radius-pill: 999px;
    --transition-fast: 0.2s ease;
    --transition-med: 0.25s ease;
}

/* --- Base & Modern Reset --- */
*, *::before, *::after {
    box-sizing: border-box;
}

html {
    -webkit-text-size-adjust: 100%;
}
   
body {
    margin: 0;
    background-color: var(--paper);
    color: var(--text);
    font-family: var(--font-sans);
    font-size: 1.125rem;
    line-height: 1.7;
    transition: background-color var(--transition-med), color var(--transition-med);
}

img, picture, svg, video {
    display: block;
    max-inline-size: 100%;
}

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

h1, h2, h3, h4, h5, h6 {
    text-wrap: balance;
}

/* --- Global Interactive Elements --- */
a {
    color: var(--accent);
    text-decoration: none;
    transition: color var(--transition-fast);

    &:hover,
    &:focus-visible {
        color: var(--accent-light);
    }
}

:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
}

ul {
    padding-inline-start: 1.75rem;
}

li {
    margin-block: 0.625rem;
}

hr {
    border: none;
    border-block-start: 1px solid var(--border);
    inline-size: 250px;
    margin-block: 2.5rem;
}

/* --- Shared Components & Utilities --- */
:is(.btn, .download-btn, .browse-btn) {
    display: inline-block;
    color: #ffffff;
    background-color: var(--accent);
    padding: 0.75rem 1.375rem;
    border-radius: var(--radius-sm);
    font-weight: 600;
    border: none;
    cursor: pointer;
    text-align: center;
    transition: background-color var(--transition-fast), color var(--transition-fast);

    &:hover,
    &:focus-visible {
        background-color: var(--accent-light);
        color: #ffffff;
    }
}

/* Remove default disclosure triangle/arrow */
details summary {
    list-style: none; /* Modern browsers */
}

/* --- Layout Components --- */
main {
    inline-size: min(1100px, 92%);
    margin-inline: auto;
}

section {
    margin-block: 0rem;
}

/* Shared Typography */
section h2,
details summary {
    font-family: var(--font-serif);
    font-size: 2.2rem;
    border-block-end: 1px solid var(--border);
}

details summary {
    cursor: pointer;
}

/* --- Header & Navigation --- */
header {
    text-align: center;
    border-block-end: 1px solid var(--border);
}

h1 {
    margin: 0;
    font-family: var(--font-serif);
    font-size: clamp(2.5rem, 5vw + 1rem, 3.4rem);
    font-weight: 700;
    letter-spacing: 1px;
}

.tagline {
    margin-block-start: 0rem;
    font-size: 1.2rem;
    color: var(--text-muted);
}

nav {
    margin-block-start: 0rem;

    & a {
        margin-inline: 1.125rem;
        font-weight: 600;
    }
}

/* Search Bar Styling */
.search-section {
    max-width: 900px;
    margin: 1rem auto 0rem auto;
    padding: 0 1rem;
}

.search-container {
    width: 100%;
}

#searchInput {
    width: 100%;
    padding: 1rem 1.25rem;
    font-size: 1.1rem;
    border: 1px solid var(--border);
    background-color: var(--surface);
    color: var(--text);
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.03);
    outline: none;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
    box-sizing: border-box;

    &:focus-visible,
    &:focus {
        border-color: var(--accent);
        box-shadow: 0 6px 16px rgba(0, 0, 0, 0.08);
    }
}

.no-results {
    grid-column: 1 / -1;
    font-size: 1.1rem;
    color: var(--text-muted);
    padding: 2rem 0;
}

/* --- Music Grid & Cards --- */
#musicGrid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 1.5rem;
}

.music-card {
    background-color: var(--surface);
    border: 1px solid var(--border);
    padding: 1.375rem;
    text-align: center;
    cursor: pointer;
    transition: transform var(--transition-med), box-shadow var(--transition-med), background-color var(--transition-med);

    &:hover,
    &:focus-within {
        transform: translateY(-4px);
        box-shadow: 0 10px 24px rgb(0 0 0 / 8%);
    }

    & h3 {
        margin: 0 0 1.25rem;
        font-family: var(--font-serif);
        font-size: 1.6rem;
    }
}

.thumbnail {
    inline-size: 100%;
    aspect-ratio: 3 / 4;
    object-fit: cover;
    border: 1px solid var(--border-light);
    margin-block-end: 1.25rem;
}

.composer {
    color: var(--text-muted);
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.6px;
    margin-block-end: 0.25rem;
}

.tags {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 0.5rem;
    margin-block: 1.125rem 1.375rem;

    & span {
        background-color: var(--paper-dark);
        border: 1px solid var(--border);
        border-radius: var(--radius-pill);
        padding: 0.25rem 0.625rem;
        font-size: 0.8rem;
    }
}

/* --- Library Page Layout --- */
.library-header {
    max-inline-size: 800px;
    margin-block: 3.75rem;
    margin-inline: auto;
    text-align: center;
}

.library-layout {
    display: grid;
    grid-template-columns: 260px 1fr;
    gap: 2.5rem;
    align-items: start;
}

.filter-sidebar {
    position: sticky;
    inset-block-start: 1.875rem;
    background-color: var(--surface);
    border: 1px solid var(--border);
    padding: 1.5rem;

    & h3 {
        margin-block-start: 0;
        font-family: var(--font-serif);
    }

    & hr {
        inline-size: 100%;
        margin-block: 1.5rem;
    }

    & label {
        display: block;
        margin-block: 0.625rem;
        cursor: pointer;
    }

    & input[type="checkbox"] {
        margin-inline-end: 0.5rem;
    }
}

.library-summary {
    margin-block-end: 1.5rem;
}

.library-content {
    min-inline-size: 0;
}

/* --- Composition Pages --- */
.site-title {
    color: inherit;

    &:hover {
        color: var(--accent);
    }
}

.back-link {
    margin-block-end: 1.875rem;
}

.composition {
    max-inline-size: 900px;
    margin-inline: auto;

    & h2 {
        text-align: center;
    }

    & .download-btn {
        display: block;
        inline-size: max-content;
        margin-inline: auto;
    }
}

.composition-thumbnail {
    inline-size: 100%;
    max-inline-size: 400px;
    margin-block: 2.5rem;
    margin-inline: auto;
    border: 1px solid var(--border);
    background-color: var(--surface);
}

.composition-info {
    inline-size: 100%;
    max-inline-size: 500px;
    margin-inline: auto;
    margin-block-end: 2.5rem;
    border-collapse: collapse;
    border: 1px solid var(--border);
    background-color: var(--surface);

    & th,
    & td {
        padding: 0.875rem 1.125rem;
        border-block-end: 1px solid var(--border);
        text-align: start;
    }

    & tr:last-child th,
    & tr:last-child td {
        border-block-end: none;
    }

    & th {
        inline-size: 40%;
        background-color: var(--paper-dark);
    }
}

.composition-description {
    max-inline-size: 800px;
    margin-block: 3.75rem;
    margin-inline: auto;

    & h3 {
        font-family: var(--font-serif);
        font-size: 1.6rem;
    }
}

/* --- Score & Parts Section --- */
.parts-download-container {
    max-inline-size: 600px;
    margin-block: 2.5rem;
    margin-inline: auto;
    background-color: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 1.5rem 2rem;

    & h3 {
        margin-block-start: 0;
        margin-block-end: 1rem;
        font-family: var(--font-serif);
        font-size: 1.5rem;
        border-block-end: 1px solid var(--border-light);
        padding-block-end: 0.5rem;
    }
}

.parts-list {
    list-style: none;
    padding-inline-start: 0;
    margin: 0;

    & li {
        display: flex;
        justify-content: space-between;
        align-items: center;
        padding-block: 0.75rem;
        margin-block: 0;
        border-block-end: 1px solid var(--border-light);

        &:last-child {
            border-block-end: none;
        }

        & span {
            font-weight: 600;
        }
    }
}

.part-info {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.part-thumbnail {
    inline-size: 48px;
    aspect-ratio: 3 / 4;
    object-fit: cover;
    border: 1px solid var(--border-light);
    border-radius: var(--radius-sm);
    background-color: var(--surface);
    flex-shrink: 0;
}

.part-btn {
    padding: 0.4rem 0.85rem;
    font-size: 0.9rem;
}

/* --- Footer --- */
footer {
    margin-block-start: 6.25rem;
    padding-block: 3.125rem;
    border-block-start: 1px solid var(--border);
    text-align: center;
    color: var(--text-muted);
    font-size: 0.95rem;
}

/* --- Media Queries --- */
@media (width <= 900px) {
    .library-layout {
        grid-template-columns: 1fr;
    }
    .filter-sidebar {
        position: static;
    }
}

@media (width <= 700px) {
    nav a {
        display: inline-block;
        margin-block: 0.5rem;
        margin-inline: 0.75rem;
    }
}

@media (min-width: 1024px) {
    body {
        zoom: 0.8;
    }
}

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}

/* ===========================
   DARK MODE TOGGLE BUTTON
=========================== */
.theme-toggle-btn {
    position: fixed;
    right: 1.5rem;
    bottom: 1.5rem;
    width: 56px;
    height: 56px;
    display:flex;
    align-items:center;
    justify-content:center;
    padding:0;
    border:1px solid var(--border);
    border-radius:50%;
    background:rgb(255 255 255 / 85%);
    backdrop-filter:blur(10px);
    color:var(--text);
    font-size:1.25rem;
    cursor:pointer;
    box-shadow:0 6px 20px rgb(0 0 0 / 12%);
    transition:background-color .25s,color .25s,border-color .25s,transform .2s,box-shadow .2s;
    z-index:1000;
}
.theme-toggle-btn:hover{
    transform:translateY(-2px);
    background:var(--paper-dark);
    border-color:var(--accent);
    color:var(--accent);
    box-shadow:0 10px 28px rgb(0 0 0 / 18%);
}
.theme-toggle-btn:active{transform:translateY(0);}

/* ===========================
   DARK MODE OVERRIDES
=========================== */
html.dark-mode {
    color-scheme: dark;

    /* Warm dark paper & surface tones */
    --paper: #181715;
    --paper-dark: #24221f;
    --surface: #201f1c;
    
    /* Readable warm light text */
    --text: #e6e2d8;
    --text-muted: #a69f92;
    
    /* Warm brass/gold accent matching classic score aesthetic */
    --accent: #d4a359;
    --accent-light: #e5b872;
    
    /* Dark subtle borders */
    --border: #38342f;
    --border-light: #2c2925;
}

html.dark-mode #searchInput:focus {
    box-shadow: 0 6px 16px rgba(0, 0, 0, 0.4);
}

html.dark-mode .theme-toggle-btn {
    background: rgb(32 31 28 / 85%);
}

html.dark-mode .theme-toggle-btn:hover {
    background-color: var(--paper-dark);
    border-color: var(--accent);
    color: var(--accent);
}

html.dark-mode :is(.btn, .download-btn, .browse-btn) {
    color: #181715;
    background-color: var(--accent);

    &:hover,
    &:focus-visible {
        background-color: var(--accent-light);
        color: #181715;
    }
}