:root {
    /* گرادینت اصلی: ترکیبی از زرد روشن و طلایی برای المان‌های اصلی */
    --primary-gradient: linear-gradient(45deg, #ffde00, #ffc107);

    /* گرادینت موسیقی: ترکیبی جذاب‌تر از زرد و بنفش تیره برای تنوع */
    --music-gradient: linear-gradient(45deg, #ffde00, #ffc107);

    /* پس‌زمینه: یک پس‌زمینه تیره با دو منبع نور زرد و بنفش بسیار محو */
    --dark-gradient: radial-gradient(circle at 25% 25%, rgba(255, 222, 0, 0.05) 0%, transparent 50%),
                    radial-gradient(circle at 75% 75%, rgba(124, 58, 237, 0.08) 0%, transparent 50%),
                    #0a0a0f;

    /* پس‌زمینه کارت: شیشه‌ای تیره برای ایجاد عمق */
    --card-bg: rgba(25, 25, 35, 0.85);

    /* حاشیه کارت: یک حاشیه بسیار محو برای جدا کردن کارت از پس‌زمینه */
    --card-border: rgba(255, 255, 255, 0.12);

    /* رنگ متن اصلی: سفید برای خوانایی بالا */
    --text-primary: #ffffff;

    /* رنگ متن ثانویه: زرد به عنوان رنگ برجسته و اصلی تم */
    --text-secondary: #ffde00;

    /* رنگ متن فرعی: خاکستری ملایم برای اطلاعات کم‌اهمیت‌تر */
    --text-muted: #71717a;

    /* سایه اصلی: سایه‌ای عمیق و نرم برای المان‌های اصلی */
    --shadow-primary: 0 25px 50px -12px rgba(0, 0, 0, 0.6);

    /* سایه در حالت هاور: سایه‌ای به رنگ زرد برای ایجاد بازخورد بصری */
    --shadow-hover: 0 8px 25px rgba(255, 222, 0, 0.25);

    /* این مقادیر بدون تغییر باقی می‌مانند */
    --border-radius: 20px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Reset and Base */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif !important;
    background: var(--dark-gradient) !important;
    color: var(--text-primary) !important;
    min-height: 100vh;
    direction: rtl;
    overflow-x: hidden;
    line-height: 1.6;
    padding-top:60px !important;
}

/* Override Bootstrap conflicts */
.container-fluid {
    padding: 1rem !important;
}

/* Header Section */
.main-header {
    text-align: center;
    padding: 2rem 0 3rem;
    margin-bottom: 2rem;
    position: relative;
}

.main-header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 100px;
    height: 4px;
    background: var(--music-gradient);
    border-radius: 2px;
}

.main-header h1 {
    font-size: clamp(2.5rem, 6vw, 4rem) !important;
    font-weight: 800 !important;
    margin-bottom: 1rem !important;
    background: var(--music-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-shadow: none !important;
    line-height: 1.2 !important;
}

.main-header p {
    font-size: clamp(1.1rem, 3vw, 1.4rem) !important;
    color: var(--text-muted) !important;
    font-weight: 400 !important;
    margin: 0 !important;
}

/* Search Container */
.search-container {
    margin-bottom: 2.5rem;
    padding: 0 1rem;
}

.search-input {
    background: var(--card-bg) !important;
    border: 2px solid var(--card-border) !important;
    color: var(--text-primary) !important;
    border-radius: 50px !important;
    padding: 1rem 1.5rem !important;
    backdrop-filter: blur(15px) !important;
    transition: var(--transition) !important;
    font-size: 1rem !important;
    width: 100% !important;
}

.search-input:focus {
    background: var(--card-bg) !important;
    border-color: var(--text-secondary) !important;
    color: var(--text-primary) !important;
    box-shadow: 0 0 0 0.25rem rgba(78, 205, 196, 0.25) !important;
    outline: none !important;
}

.search-input::placeholder {
    color: var(--text-muted) !important;
    opacity: 0.8 !important;
}

/* Back Button */
.back-btn-container {
    text-align: center;
    margin-bottom: 3rem;
}

.back-btn {
    background: linear-gradient(45deg, #2c2c2c, #404040) !important;
    color: var(--text-primary) !important;
    border: 2px solid var(--card-border) !important;
    padding: 0.8rem 2rem !important;
    border-radius: 50px !important;
    font-size: 1rem !important;
    font-weight: 600 !important;
    cursor: pointer !important;
    transition: var(--transition) !important;
    text-decoration: none !important;
    display: inline-flex !important;
    align-items: center !important;
    gap: 0.6rem !important;
    position: relative;
    overflow: hidden;
    backdrop-filter: blur(10px);
    box-shadow: 0 4px 20px var(--shadow-primary);
}

.back-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
    transition: left 0.6s ease;
}

.back-btn:hover::before {
    left: 100%;
}

.back-btn:hover {
    transform: translateY(-3px) !important;
    box-shadow: 0 8px 30px var(--shadow-hover) !important;
    border-color: var(--text-secondary) !important;
    text-decoration: none !important;
    color: var(--text-primary) !important;
}

/* Music Cards */
.music-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1.5rem;
    padding: 0 0.5rem;
}

.music-card {
    background: var(--card-bg) !important;
    border: 2px solid var(--card-border) !important;
    border-radius: var(--border-radius) !important;
    backdrop-filter: blur(15px) !important;
    transition: var(--transition) !important;
    position: relative;
    overflow: hidden;
    height: 100%;
    display: flex;
    flex-direction: column;
    box-shadow: 0 8px 25px var(--shadow-primary) !important;
}

.music-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(45deg, transparent, rgba(255, 255, 255, 0.05), transparent);
    transform: translateX(-100%);
    transition: transform 0.8s ease;
    z-index: 1;
}

.music-card:hover::before {
    transform: translateX(100%);
}

.music-card:hover {
    transform: translateY(-8px) !important;
    border-color: var(--text-secondary) !important;
    box-shadow: 0 20px 50px var(--shadow-hover) !important;
}

.card-body {
    padding: 1.5rem !important;
    position: relative;
    z-index: 2;
    flex: 1;
    display: flex;
    flex-direction: column;
}

/* Thumbnail */
.thumbnail-container {
    position: relative;
    margin-bottom: 1.5rem;
    border-radius: 15px;
    overflow: hidden;
}

.music-thumbnail {
    width: 100% !important;
    height: 220px !important;
    object-fit: cover !important;
    transition: transform 0.4s ease !important;
    display: block;
}

.music-card:hover .music-thumbnail {
    transform: scale(1.08);
}

.thumbnail-placeholder {
    width: 100%;
    height: 220px;
    background: linear-gradient(135deg, #333, #555);
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 15px;
    color: var(--text-muted);
    font-size: 3rem;
}

.play-overlay {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: rgba(0, 0, 0, 0.8) !important;
    border-radius: 50%;
    width: 70px;
    height: 70px;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: var(--transition) !important;
    cursor: pointer;
    z-index: 3;
}

.music-card:hover .play-overlay {
    opacity: 1;
}

.play-overlay i {
    color: var(--text-primary) !important;
    font-size: 1.8rem !important;
    margin-left: 4px;
}

/* Card Content */
.music-title {
    font-size: 1.4rem !important;
    font-weight: 700 !important;
    color: var(--text-primary) !important;
    line-height: 1.4 !important;
    margin-bottom: 0.8rem !important;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.music-artist {
    font-size: 1.1rem !important;
    color: var(--text-secondary) !important;
    font-weight: 500 !important;
    margin-bottom: 1rem !important;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.music-description {
    color: var(--text-muted) !important;
    line-height: 1.6 !important;
    flex-grow: 1;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
    margin-bottom: 1.5rem !important;
    font-size: 0.95rem !important;
}

/* Play Button */
.btn-container {
    margin-top: auto;
}

.play-btn {
    background: var(--music-gradient) !important;
    color: var(--text-primary) !important;
    border: none !important;
    padding: 0.9rem 1.8rem !important;
    border-radius: 50px !important;
    font-size: 1rem !important;
    font-weight: 600 !important;
    cursor: pointer !important;
    transition: var(--transition) !important;
    text-decoration: none !important;
    display: inline-flex !important;
    align-items: center !important;
    justify-content: center !important;
    gap: 0.6rem !important;
    width: 100% !important;
    position: relative;
    overflow: hidden;
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.3) !important;
}

.play-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.6s ease;
}

.play-btn:hover::before {
    left: 100%;
}

.play-btn:hover {
    transform: translateY(-2px) !important;
    box-shadow: 0 12px 25px rgba(102, 126, 234, 0.4) !important;
    text-decoration: none !important;
    color: var(--text-primary) !important;
}

.play-btn:disabled {
    opacity: 0.6 !important;
    cursor: not-allowed !important;
    background: linear-gradient(45deg, #666, #777) !important;
    transform: none !important;
}

/* Empty State */
.no-music {
    text-align: center;
    color: var(--text-muted) !important;
    font-size: 1.3rem !important;
    padding: 4rem 2rem !important;
}

.no-music i {
    font-size: 4rem !important;
    color: var(--text-secondary) !important;
    margin-bottom: 1.5rem !important;
    display: block;
}

/* Loading */
.loading {
    display: none;
    text-align: center;
    padding: 4rem 0;
    color: var(--text-muted);
}

.spinner {
    border: 4px solid rgba(255, 255, 255, 0.1);
    border-left: 4px solid var(--text-secondary);
    border-radius: 50%;
    width: 50px;
    height: 50px;
    animation: spin 1s linear infinite;
    margin: 0 auto 1.5rem;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Responsive Design */
@media (max-width: 576px) {
    .container-fluid {
        padding: 0.5rem !important;
    }
    
    .main-header {
        padding: 1.5rem 0 2rem;
    }
    
    .main-header h1 {
        font-size: 2.2rem !important;
    }
    
    .music-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
        padding: 0;
    }
    
    .music-thumbnail,
    .thumbnail-placeholder {
        height: 180px !important;
    }
    
    .music-title {
        font-size: 1.2rem !important;
    }
    
    .search-input {
        padding: 0.8rem 1.2rem !important;
        font-size: 0.95rem !important;
    }

    .back-btn {
        padding: 0.7rem 1.5rem !important;
        font-size: 0.95rem !important;
    }
    
    .card-body {
        padding: 1.2rem !important;
    }
}

@media (min-width: 577px) and (max-width: 768px) {
    .music-grid {
        grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    }
    
    .music-thumbnail,
    .thumbnail-placeholder {
        height: 190px !important;
    }
}

@media (min-width: 769px) and (max-width: 992px) {
    .music-grid {
        grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    }
}

@media (min-width: 1200px) {
    .music-grid {
        grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
        gap: 2rem;
    }
    
    .music-thumbnail,
    .thumbnail-placeholder {
        height: 240px !important;
    }
}

/* Animation Classes */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

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

/* Focus states for accessibility */
.play-btn:focus,
.back-btn:focus,
.search-input:focus {
    outline: 2px solid var(--text-secondary) !important;
    outline-offset: 2px !important;
}