:root {
    --bg-dark: #000000;
    --surface: #0a0a0a;
    --surface-hover: #141414;
    --primary: #89CC04;
    --secondary: #2E8B57;
    --third: #0a0a0a;
    --text-primary: #ffffff;
    --text-secondary: #a1a1aa;
    --border: #222222;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Space Mono', monospace;
}

body {
    background-color: var(--bg-dark);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

h1, h2, h3, h4 {
    font-family: 'Inter', sans-serif;
    font-weight: 800;
    line-height: 1.2;
}

h1 {
    font-size: 4rem;
    margin-bottom: 1.5rem;
}

h2.section-title {
    font-size: 2.5rem;
    margin-bottom: 2rem;
    position: relative;
    display: inline-block;
}

h2.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 0;
    width: 60px;
    height: 4px;
    background-color: var(--primary);
}

a {
    color: var(--text-primary);
    text-decoration: none;
    transition: color 0.3s ease;
}

.btn {
    display: inline-block;
    padding: 1rem 2rem;
    border-radius: 0;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    border: 1px solid var(--primary);
    font-size: 1rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 0 15px rgba(137,204,4,0.4);
    background-color: var(--primary);
    color: var(--bg-dark);
}

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

.btn-secondary {
    background-color: transparent;
    color: var(--text-primary);
    border: 1px solid var(--border);
}

.btn-secondary:hover {
    border-color: var(--text-primary);
    background-color: transparent;
    color: var(--text-primary);
    box-shadow: 0 0 15px rgba(255,255,255,0.2);
}

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.9rem;
}

.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background-color: rgba(15, 15, 19, 0.9);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border);
    z-index: 1000;
    padding: 1.5rem 0;
}

.nav-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.5rem;
    font-weight: 800;
}

.logo span {
    color: var(--primary);
}

.nav-links a {
    margin-left: 2rem;
    font-weight: 600;
}

.nav-links a:hover {
    color: var(--primary);
}

.hamburger {
    display: none;
    flex-direction: column;
    justify-content: space-around;
    width: 2rem;
    height: 2rem;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0;
    z-index: 1010;
}

.hamburger span {
    width: 2rem;
    height: 0.25rem;
    background: var(--text-primary);
    border-radius: 10px;
    transition: all 0.3s linear;
    position: relative;
    transform-origin: 1px;
}

.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    padding-top: 80px;
    overflow: hidden;
    background-color: var(--bg-dark);
}

#heroCanvas {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 0;
}

.hero-content {
    max-width: 800px;
    position: relative;
    z-index: 10;
}

.hero-content p {
    font-size: 1.2rem;
    color: var(--text-secondary);
    margin-bottom: 2.5rem;
}

.hero-desc {
    font-size: 1.2rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
    line-height: 1.6;
}

.hero-actions {
    display: flex;
    gap: 1.5rem;
}

.shape {
    position: absolute;
    bottom: 0;
    width: 60px;
    background-color: transparent;
    border: 2px solid var(--primary);
    box-shadow: 0 0 15px rgba(137, 204, 4, 0.3), inset 0 0 15px rgba(137, 204, 4, 0.1);
    z-index: 1;
    opacity: 0.3;
    animation: equalizer 1s infinite alternate ease-in-out;
    transform-origin: bottom;
}

.shape-1 { left: 15%; height: 300px; animation-duration: 0.8s; animation-delay: 0.1s;}
.shape-2 { left: 45%; height: 500px; animation-duration: 1.2s; animation-delay: 0.5s; }
.shape-3 { left: 75%; height: 250px; animation-duration: 0.9s; animation-delay: 0.2s;}

@keyframes equalizer {
    0% { transform: scaleY(0.4); }
    100% { transform: scaleY(1.1); }
}

.centered-link {
    display: inline-flex;
    align-items: center;
    margin-top: 2rem;
    padding: 0.8rem 2rem;
    font-weight: 600;
    color: var(--primary);
    text-decoration: none;
    border: 1px solid var(--primary);
    border-radius: 0;
    transition: all 0.3s ease;
    justify-content: center;
    width: max-content;
    position: relative;
    left: 50%;
    transform: translateX(-50%);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.centered-link:hover {
    background-color: var(--primary);
    color: var(--bg-dark);
    transform: translate(-50%, -2px);
    box-shadow: 0 0 15px rgba(137, 204, 4, 0.4);
}

.section {
    padding: 3rem 0;
    scroll-margin-top: 90px;
}

.section-alt {
    background-color: rgba(30, 30, 38, 0.4);
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
}

.reviews-grid, .genres-grid, .tribute-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 2rem;
}

.lastfm-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 1.5rem;
}

.recent-tracks-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.card {
    background-color: var(--surface);
    border-radius: 0;
    overflow: hidden;
    transition: transform 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
    border: 1px solid var(--border);
    display: flex;
    flex-direction: column;
}

.card:hover {
    transform: translateY(-8px);
    background-color: var(--surface-hover);
    border-color: var(--primary);
    box-shadow: 0 0 20px rgba(137,204,4,0.15);
}

.card-img {
    width: 100%;
    aspect-ratio: 1/1;
    object-fit: cover;
    background-color: #333;
}

.card-content {
    padding: 1.5rem;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.card-title {
    font-size: 1.2rem;
    margin-bottom: 0.5rem;
}

.card-subtitle {
    color: var(--primary);
    font-weight: 600;
    font-size: 0.9rem;
    margin-bottom: 1rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.card-desc {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.card-rating {
    margin-top: auto;
    padding-top: 1rem;
    color: #ffaa00;
    font-weight: bold;
}

.genre-card {
    padding: 2rem;
    position: relative;
    overflow: hidden;
    height: 100%;
}

.genre-title {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    position: relative;
    z-index: 2;
}

.genre-desc {
    color: var(--text-secondary);
    position: relative;
    z-index: 2;
}

.genre-decoration {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 6px;
}

.lastfm-header {
    display: flex;
    flex-direction: column;
    margin-bottom: 3rem;
}

.lastfm-subtitle {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
}

.section-desc {
    color: var(--text-secondary);
    margin-bottom: 2rem;
    font-size: 1.1rem;
    line-height: 1.6;
}

.username-picker {
    display: flex;
    gap: 1rem;
    align-items: center;
}

.username-picker input {
    background-color: var(--surface);
    border: 1px solid var(--border);
    color: var(--text-primary);
    padding: 0.5rem 1rem;
    border-radius: 0;
    font-size: 1rem;
    outline: none;
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.username-picker input:focus {
    border-color: var(--primary);
    box-shadow: 0 0 10px rgba(137,204,4,0.2);
}

.track-item {
    display: flex;
    align-items: center;
    background-color: var(--surface);
    padding: 1rem;
    border-radius: 0;
    border: 1px solid var(--border);
    transition: background-color 0.2s ease, transform 0.2s ease, border-left-color 0.2s ease;
}

.track-item:hover {
    background-color: var(--surface-hover);
    border-left: 4px solid var(--primary);
    transform: translateX(4px);
}

.track-img {
    width: 60px;
    height: 60px;
    border-radius: 0;
    margin-right: 1rem;
    background-color: #333;
    object-fit: cover;
}

.track-info {
    flex: 1;
}

.track-name {
    font-weight: 600;
    margin-bottom: 0.25rem;
}

.track-artist {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.track-time {
    font-size: 0.8rem;
    color: var(--secondary);
    margin-top: 0.25rem;
}

.loading-state, .error-state {
    grid-column: 1 / -1;
    text-align: center;
    padding: 3rem;
    color: var(--text-secondary);
    background-color: var(--surface);
    border-radius: 8px;
    border: 1px dashed var(--border);
}

.error-state {
    color: var(--primary);
    border-color: var(--primary);
}

.footer {
    background-color: var(--bg-dark);
    padding: 3rem 0;
    border-top: 1px solid var(--border);
    text-align: center;
}

.footer-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
}

.footer-content p {
    color: var(--text-secondary);
}

@media (max-width: 768px) {
    h1 {
        font-size: 2.5rem;
    }
    .hero-actions {
        flex-direction: column;
    }
    .hamburger {
        display: flex;
    }
    .nav-links {
        display: flex;
        flex-direction: column;
        justify-content: center;
        align-items: center;
        background: rgba(15, 15, 19, 0.98);
        position: absolute;
        top: 0;
        left: -100%;
        width: 100%;
        height: 100vh;
        transition: left 0.3s ease;
        z-index: 1005;
    }
    .nav-links.active {
        left: 0;
    }
    .nav-links a {
        margin: 1.5rem 0;
        font-size: 1.5rem;
    }
    .hamburger.active span:first-child {
        transform: rotate(45deg);
    }
    .hamburger.active span:nth-child(2) {
        opacity: 0;
    }
    .hamburger.active span:nth-child(3) {
        transform: rotate(-45deg);
    }
}

.welcome-overlay {
    position: fixed;
    inset: 0;
    z-index: 9999;
    background-color: var(--bg-dark);
    background-image:
        linear-gradient(rgba(137, 204, 4, 0.04) 1px, transparent 1px),
        linear-gradient(90deg, rgba(137, 204, 4, 0.04) 1px, transparent 1px);
    background-size: 40px 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    opacity: 1;
    transition: opacity 0.8s ease;
    pointer-events: all;
}

.welcome-overlay.is-hiding {
    opacity: 0;
    pointer-events: none;
}

.welcome-overlay.is-hidden {
    display: none;
}

.welcome-overlay__inner {
    max-width: 560px;
    padding: 2rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1.25rem;
}

.welcome-overlay__eyebrow {
    font-family: 'Space Mono', monospace;
    font-size: 0.85rem;
    letter-spacing: 4px;
    text-transform: uppercase;
    color: var(--text-secondary);
}

.welcome-overlay__title {
    font-family: 'Inter', sans-serif;
    font-weight: 800;
    font-size: clamp(3rem, 8vw, 5.5rem);
    line-height: 1.1;
    margin-bottom: 0;
    color: var(--text-primary);
}

.welcome-overlay__title span {
    color: var(--primary);
}

.welcome-overlay__subtitle {
    font-family: 'Playfair Display', serif;
    font-style: italic;
    font-size: clamp(1rem, 2.5vw, 1.4rem);
    color: var(--text-secondary);
}

.welcome-overlay__btn {
    margin-top: 1rem;
    font-size: 0.9rem;
    animation: overlayBtnPulse 2.5s ease-in-out infinite;
}

.welcome-overlay__btn:active {
    animation: none;
}

@keyframes overlayBtnPulse {
    0%, 100% { box-shadow: 0 0 0 0 rgba(137, 204, 4, 0); }
    50%       { box-shadow: 0 0 20px 4px rgba(137, 204, 4, 0.35); }
}