:root {
    --bg-color: #050505;
    --text-primary: #F5F5F5;
    --text-dim: #888888;
    --accent: #FEE500;
    --border-color: rgba(255, 255, 255, 0.1);

    --font-serif: 'Helvetica Neue', Helvetica, Arial, sans-serif;
    /* Used for logo & titles */
    --font-sans: 'Inter', sans-serif;
}

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

body {
    background-color: var(--bg-color);
    color: var(--text-primary);
    font-family: var(--font-sans);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

/* --- Header --- */
.header {
    padding: 60px 40px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    gap: 30px;
    max-width: 1400px;
    margin: 0 auto;
}

.logo {
    font-family: var(--font-serif);
    font-size: clamp(3rem, 10vw, 8rem);
    font-weight: 800;
    /* Extra Bold */
    letter-spacing: -0.05em;
    line-height: 0.9;
}

.intro {
    max-width: 600px;
}

.description {
    font-size: 1.1rem;
    color: var(--text-dim);
    margin-bottom: 20px;
}

.credits {
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--accent);
}

.credits strong {
    color: var(--text-primary);
    font-weight: 700;
}

/* --- Footer --- */
.footer {
    padding: 60px 40px;
    display: grid;
    grid-template-columns: 1fr 2fr 2fr;
    gap: 40px;
    font-size: 0.85rem;
    font-weight: 500;
    max-width: 1400px;
    margin: 0 auto;
    border-top: 1px solid var(--border-color);
}

.footer-col p {
    margin-bottom: 8px;
}

.mt-4 {
    margin-top: 24px;
}

.go-top {
    color: var(--text-primary);
    text-decoration: underline;
}

.go-top:hover {
    color: var(--accent);
}

.footer-credits {
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--accent);
}

.footer-credits strong {
    color: var(--text-primary);
    font-weight: 700;
}

/* --- Grid --- */
.grid-container {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1px;
    background-color: var(--border-color);
    max-width: 1400px;
    margin: 0 auto;
}

.grid-item {
    background-color: var(--bg-color);
    position: relative;
    cursor: pointer;
    overflow: hidden;
    aspect-ratio: 1/1;
    /* Changed to square 1:1 */
}

.grid-item img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: opacity 0.4s ease, transform 0.6s cubic-bezier(0.16, 1, 0.3, 1), filter 0.6s ease;
}

.grid-item .poster-img {
    z-index: 2;
    filter: grayscale(100%) contrast(1.1);
}

.grid-item .hover-img {
    z-index: 1;
    opacity: 0;
}

.grid-item:hover .poster-img {
    opacity: 0;
    /* Fade out typography poster */
}

.grid-item:hover .hover-img {
    opacity: 1;
    /* Fade in album cover */
    transform: scale(1.05);
    /* Slight zoom on hover */
}

.item-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.9) 0%, rgba(0, 0, 0, 0) 40%);
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    padding: 24px;
    opacity: 0;
    transition: opacity 0.4s ease;
}

.grid-item:hover .item-overlay {
    opacity: 1;
}

.item-rank {
    position: absolute;
    top: 20px;
    left: 20px;
    font-family: var(--font-sans);
    font-weight: 700;
    font-size: 0.9rem;
    color: var(--bg-color);
    background: var(--text-primary);
    padding: 2px 8px;
    border-radius: 4px;
    opacity: 0;
    transform: translateY(-10px);
    transition: all 0.4s ease;
}

.grid-item:hover .item-rank {
    opacity: 1;
    transform: translateY(0);
}

.item-title {
    font-family: var(--font-serif);
    font-size: 1.5rem;
    font-weight: 500;
    /* Medium for title */
    margin-bottom: 4px;
    line-height: 1.2;
    transform: translateY(10px);
    transition: transform 0.4s ease;
}

.item-artist {
    font-size: 0.9rem;
    color: var(--text-dim);
    transform: translateY(10px);
    transition: transform 0.4s ease 0.05s;
}

.grid-item:hover .item-title,
.grid-item:hover .item-artist {
    transform: translateY(0);
}

/* --- Modal --- */
.player-modal {
    margin: auto;
    width: 100vw;
    height: 100vh;
    max-width: none;
    max-height: none;
    background: rgba(5, 5, 5, 0.95);
    backdrop-filter: blur(20px);
    border: none;
    color: var(--text-primary);
    position: fixed;
    inset: 0;
    z-index: 100;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.4s ease;
}

.player-modal[open] {
    opacity: 1;
    pointer-events: auto;
}

.modal-content {
    display: flex;
    width: 100%;
    height: 100%;
}

.close-btn {
    position: absolute;
    top: 30px;
    right: 40px;
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: 3rem;
    cursor: pointer;
    z-index: 10;
    transition: transform 0.3s;
    line-height: 1;
}

.close-btn:hover {
    transform: scale(1.1) rotate(90deg);
}

.modal-left {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #111;
    padding: 60px;
    position: relative;
}

.modal-left img,
#posterCanvas {
    max-height: 80vh;
    max-width: 100%;
    box-shadow: 0 30px 60px rgba(0, 0, 0, 0.6);
    display: block;
}

.modal-rank {
    display: none;
    /* Hide the rank number in the modal */
}

.modal-right {
    flex: 1;
    padding: 80px 60px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 40px;
    overflow-y: auto;
}

.track-info {
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 30px;
}

.modal-title {
    font-family: var(--font-serif);
    font-size: clamp(3rem, 5vw, 6rem);
    line-height: 1;
    margin-bottom: 16px;
}

.modal-artist {
    font-size: 1.5rem;
    color: var(--text-dim);
}

.detail-label {
    display: block;
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--accent);
    margin-bottom: 12px;
}

.modal-lyrics {
    font-family: var(--font-serif);
    font-size: 2rem;
    font-style: italic;
    color: #FFF;
    line-height: 1.3;
}

.iframe-wrapper {
    width: 100%;
    aspect-ratio: 16/9;
    background: #000;
    border: 1px solid var(--border-color);
}

.iframe-wrapper iframe {
    width: 100%;
    height: 100%;
}

@media (max-width: 900px) {
    .modal-content {
        flex-direction: column;
    }

    .modal-left {
        padding: 40px 20px;
        min-height: 50vh;
    }

    .modal-left img {
        max-height: 60vh;
    }

    .modal-right {
        padding: 40px 20px;
    }

    .close-btn {
        top: 10px;
        right: 20px;
    }

    .grid-container {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 500px) {
    .grid-container {
        grid-template-columns: 1fr;
    }
}