:root {
    --primary: #4f46e5;
    --primary-hover: #6366f1;
    --secondary: #10b981;
    --bg-color: #0f172a;
    --text-color: #f8fafc;
    --text-muted: #94a3b8;
    --glass-bg: rgba(30, 41, 59, 0.7);
    --glass-border: rgba(255, 255, 255, 0.1);
    --danger: #ef4444;
    --danger-hover: #f87171;
}

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

body {
    font-family: 'Outfit', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    min-height: 100vh;
    overflow-x: hidden;
    position: relative;
}

/* Background Effects */
.background-effects {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: -1;
    overflow: hidden;
}

.glow-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(100px);
    opacity: 0.5;
    animation: float 20s infinite alternate ease-in-out;
}

.orb-1 {
    top: -10%;
    left: -10%;
    width: 50vw;
    height: 50vw;
    background: radial-gradient(circle, rgba(79,70,229,0.4) 0%, rgba(15,23,42,0) 70%);
}

.orb-2 {
    bottom: -10%;
    right: -10%;
    width: 60vw;
    height: 60vw;
    background: radial-gradient(circle, rgba(16,185,129,0.3) 0%, rgba(15,23,42,0) 70%);
    animation-delay: -10s;
}

.orb-3 {
    top: 40%;
    left: 40%;
    width: 30vw;
    height: 30vw;
    background: radial-gradient(circle, rgba(236,72,153,0.2) 0%, rgba(15,23,42,0) 70%);
    animation-delay: -5s;
}

@keyframes float {
    0% { transform: translate(0, 0) scale(1); }
    100% { transform: translate(10%, 10%) scale(1.1); }
}

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

.glass-panel {
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
    border-radius: 24px;
    padding: 3rem;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.glass-panel:hover {
    transform: translateY(-5px);
    box-shadow: 0 30px 60px -12px rgba(0, 0, 0, 0.6);
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    padding: 1rem 2rem;
    border-radius: 12px;
    font-size: 1.1rem;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    transition: all 0.3s ease;
    border: none;
    font-family: 'Outfit', sans-serif;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary), #818cf8);
    color: white;
    box-shadow: 0 10px 20px -10px rgba(79, 70, 229, 0.5);
}

.btn-primary:hover {
    background: linear-gradient(135deg, var(--primary-hover), #818cf8);
    transform: translateY(-2px);
    box-shadow: 0 15px 25px -10px rgba(79, 70, 229, 0.6);
}

.btn-secondary {
    background: linear-gradient(135deg, var(--secondary), #34d399);
    color: white;
}

.btn-secondary:hover {
    background: linear-gradient(135deg, #059669, #34d399);
    transform: translateY(-2px);
}

.btn-danger {
    background: var(--danger);
    color: white;
    padding: 0.5rem 1rem;
    font-size: 0.9rem;
}

.btn-danger:hover {
    background: var(--danger-hover);
}

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

.btn-outline:hover {
    border-color: var(--text-color);
    background: rgba(255,255,255,0.05);
}

.btn-block {
    width: 100%;
    margin-bottom: 1rem;
}

/* Navbar */
.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem 2rem;
    background: rgba(15, 23, 42, 0.8);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--glass-border);
    position: sticky;
    top: 0;
    z-index: 100;
}

.nav-brand {
    font-size: 1.5rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    color: white;
}

.nav-brand i {
    color: var(--primary);
}

.nav-links {
    display: flex;
    gap: 1rem;
}

.nav-btn {
    color: var(--text-color);
    text-decoration: none;
    font-weight: 500;
    padding: 0.5rem 1rem;
    border-radius: 8px;
    transition: background 0.3s;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.nav-btn:hover {
    background: rgba(255,255,255,0.1);
}

/* Hero Section */
.hero {
    text-align: center;
    margin: 4rem auto;
}

.badge {
    display: inline-block;
    padding: 0.5rem 1.25rem;
    background: rgba(79, 70, 229, 0.2);
    color: #818cf8;
    border-radius: 999px;
    font-weight: 600;
    font-size: 0.9rem;
    margin-bottom: 1.5rem;
    border: 1px solid rgba(79, 70, 229, 0.3);
}

.title {
    font-size: 4.5rem;
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 1.5rem;
    background: linear-gradient(to right, #fff, #94a3b8);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.highlight {
    background: linear-gradient(135deg, #4f46e5, #10b981);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.subtitle {
    font-size: 1.5rem;
    color: var(--text-muted);
    margin-bottom: 3rem;
}

.security-note {
    margin-top: 2rem;
    font-size: 0.9rem;
    color: var(--text-muted);
}

/* Features */
.features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 4rem;
}

.feature-card {
    padding: 2.5rem;
    text-align: center;
}

.feature-icon {
    font-size: 3rem;
    margin-bottom: 1.5rem;
    background: linear-gradient(135deg, rgba(79, 70, 229, 0.2), rgba(16, 185, 129, 0.2));
    width: 80px;
    height: 80px;
    line-height: 80px;
    border-radius: 20px;
    margin: 0 auto 1.5rem;
    color: #fff;
}

.feature-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.feature-card p {
    color: var(--text-muted);
    line-height: 1.6;
}

/* Admin Dashboard Specifics */
.admin-container {
    margin-top: 2rem;
}

.admin-grid {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 2rem;
}

.panel-left, .panel-right {
    padding: 2rem;
}

.panel-left h3, .panel-right h3 {
    margin-bottom: 1rem;
    font-size: 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.divider {
    border: none;
    border-top: 1px solid var(--glass-border);
    margin: 2rem 0;
}

.upload-area {
    border: 2px dashed var(--text-muted);
    border-radius: 16px;
    padding: 3rem 1rem;
    text-align: center;
    transition: all 0.3s;
    background: rgba(0,0,0,0.2);
    margin-bottom: 1rem;
}

.upload-area:hover, .upload-area.dragover {
    border-color: var(--primary);
    background: rgba(79, 70, 229, 0.1);
}

.upload-icon {
    font-size: 3rem;
    color: var(--text-muted);
    margin-bottom: 1rem;
}

.song-list {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    max-height: 500px;
    overflow-y: auto;
    padding-right: 0.5rem;
}

.song-list::-webkit-scrollbar {
    width: 8px;
}
.song-list::-webkit-scrollbar-track {
    background: rgba(0,0,0,0.1);
    border-radius: 4px;
}
.song-list::-webkit-scrollbar-thumb {
    background: var(--text-muted);
    border-radius: 4px;
}

.song-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem;
    background: rgba(0,0,0,0.2);
    border: 1px solid rgba(255,255,255,0.05);
    border-radius: 12px;
    transition: all 0.2s;
}

.song-item:hover {
    background: rgba(255,255,255,0.05);
    border-color: rgba(255,255,255,0.1);
}

.song-info {
    display: flex;
    align-items: center;
    gap: 1rem;
    overflow: hidden;
}

.song-icon {
    color: var(--primary);
    background: rgba(79, 70, 229, 0.2);
    padding: 0.75rem;
    border-radius: 10px;
}

.song-name {
    font-weight: 500;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 250px;
}

.song-actions {
    display: flex;
    gap: 0.5rem;
}

.icon-btn {
    background: transparent;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 6px;
    transition: all 0.2s;
}

.icon-btn:hover {
    background: rgba(255,255,255,0.1);
    color: white;
}

.icon-btn.delete:hover {
    background: rgba(239, 68, 68, 0.2);
    color: var(--danger);
}

.icon-btn.add:hover {
    background: rgba(16, 185, 129, 0.2);
    color: var(--secondary);
}

.help-text {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-top: 1rem;
    line-height: 1.4;
}

/* Login Overlay */
.overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: rgba(15, 23, 42, 0.9);
    backdrop-filter: blur(20px);
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s;
}

.overlay.active {
    opacity: 1;
    pointer-events: all;
}

.login-box {
    text-align: center;
    width: 100%;
    max-width: 400px;
}

.login-box h2 {
    margin-bottom: 0.5rem;
}

.login-box p {
    color: var(--text-muted);
    margin-bottom: 2rem;
}

.login-box input {
    width: 100%;
    padding: 1rem;
    border-radius: 12px;
    border: 1px solid var(--glass-border);
    background: rgba(0,0,0,0.3);
    color: white;
    font-size: 1rem;
    margin-bottom: 1.5rem;
    font-family: 'Outfit', sans-serif;
}

.login-box input:focus {
    outline: none;
    border-color: var(--primary);
}

.error-msg {
    color: var(--danger) !important;
    margin-top: 1rem;
    margin-bottom: 0 !important;
}

.back-link {
    display: block;
    margin-top: 1.5rem;
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.9rem;
}

.back-link:hover {
    color: white;
}

footer {
    text-align: center;
    padding: 2rem;
    color: var(--text-muted);
    border-top: 1px solid var(--glass-border);
    margin-top: 4rem;
}

@media (max-width: 768px) {
    .title { font-size: 3rem; }
    .admin-grid { grid-template-columns: 1fr; }
    .song-name { max-width: 150px; }
}