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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: #1a1a1a;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    background: #ffffff;
    min-height: 100vh;
    box-shadow: 0 0 50px rgba(0, 0, 0, 0.1);
}

/* Header Styles */
.header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 3rem 2rem 4rem;
    position: relative;
    overflow: hidden;
}

.header-content {
    text-align: center;
    position: relative;
    z-index: 2;
}

.logo {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 1rem;
}

.logo i {
    font-size: 3rem;
    color: #ffd700;
    animation: pulse 2s infinite;
}

.logo h1 {
    font-size: 3rem;
    font-weight: 700;
    letter-spacing: -0.02em;
}

.tagline {
    font-size: 1.2rem;
    opacity: 0.9;
    font-weight: 300;
}

.wave-decoration {
    position: absolute;
    bottom: -1px;
    left: 0;
    width: 100%;
    height: 60px;
    background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 1200 120' preserveAspectRatio='none'%3E%3Cpath d='M0,0V46.29c47.79,22.2,103.59,32.17,158,28,70.36-5.37,136.33-33.31,206.8-37.5C438.64,32.43,512.34,53.67,583,72.05c69.27,18,138.3,24.88,209.4,13.08,36.15-6,69.85-17.84,104.45-29.34C989.49,25,1113-14.29,1200,52.47V0Z' opacity='.25' fill='%23ffffff'%3E%3C/path%3E%3Cpath d='M0,0V15.81C13,36.92,27.64,56.86,47.69,72.05,99.41,111.27,165,111,224.58,91.58c31.15-10.15,60.09-26.07,89.67-39.8,40.92-19,84.73-46,130.83-49.67,36.26-2.85,70.9,9.42,98.6,31.56,31.77,25.39,62.32,62,103.63,73,40.44,10.79,81.35-6.69,119.13-24.28s75.16-39,116.92-43.05c59.73-5.85,113.28,22.88,168.9,38.84,30.2,8.66,59,6.17,87.09-7.5,22.43-10.89,48-26.93,60.65-49.24V0Z' opacity='.5' fill='%23ffffff'%3E%3C/path%3E%3Cpath d='M0,0V5.63C149.93,59,314.09,71.32,475.83,42.57c43-7.64,84.23-20.12,127.61-26.46,59-8.63,112.48,12.24,165.56,35.4C827.93,77.22,886,95.24,951.2,90c86.53-7,172.46-45.71,248.8-84.81V0Z' fill='%23ffffff'%3E%3C/path%3E%3C/svg%3E") no-repeat;
    background-size: cover;
}

/* Main Content */
.main-content {
    padding: 2rem;
}

.intro-section {
    text-align: center;
    margin-bottom: 3rem;
    padding: 2rem;
    background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
    border-radius: 20px;
    border: 1px solid #e2e8f0;
}

.intro-section h2 {
    font-size: 2.5rem;
    font-weight: 600;
    margin-bottom: 1rem;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.intro-section p {
    font-size: 1.2rem;
    color: #64748b;
    max-width: 600px;
    margin: 0 auto;
}

/* Player Section */
.player-section {
    margin-bottom: 3rem;
}

.player-container {
    background: linear-gradient(135deg, #1e293b 0%, #334155 100%);
    border-radius: 24px;
    padding: 2rem;
    color: white;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
    position: relative;
    overflow: hidden;
}

.player-container::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, #ffd700, #ff6b6b, #4ecdc4, #45b7d1);
    background-size: 300% 100%;
    animation: gradient 3s ease infinite;
}

.player-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
}

.player-header h3 {
    font-size: 1.5rem;
    font-weight: 600;
}

#episode-duration {
    color: #94a3b8;
    font-size: 0.9rem;
}

.player-controls {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.control-btn, .play-btn {
    background: rgba(255, 255, 255, 0.1);
    border: none;
    border-radius: 50%;
    color: white;
    cursor: pointer;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
}

.control-btn {
    width: 50px;
    height: 50px;
    font-size: 1.2rem;
}

.play-btn {
    width: 70px;
    height: 70px;
    font-size: 1.8rem;
    background: linear-gradient(135deg, #ffd700 0%, #ff6b6b 100%);
}

.control-btn:hover, .play-btn:hover {
    transform: scale(1.1);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.3);
}

.control-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
}

.progress-container {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.progress-bar, .volume-bar {
    flex: 1;
    height: 6px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 3px;
    position: relative;
    cursor: pointer;
}

.volume-bar {
    max-width: 100px;
}

.progress-fill, .volume-fill {
    height: 100%;
    background: linear-gradient(90deg, #ffd700, #ff6b6b);
    border-radius: 3px;
    transition: width 0.1s ease;
}

.progress-handle, .volume-handle {
    position: absolute;
    top: 50%;
    width: 16px;
    height: 16px;
    background: white;
    border-radius: 50%;
    transform: translate(-50%, -50%);
    cursor: pointer;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.3);
    transition: transform 0.2s ease;
}

.progress-handle:hover, .volume-handle:hover {
    transform: translate(-50%, -50%) scale(1.2);
}

#current-time, #total-time {
    font-size: 0.9rem;
    color: #94a3b8;
    min-width: 40px;
}

.volume-container {
    display: flex;
    align-items: center;
    gap: 1rem;
    justify-content: center;
}

.volume-container i {
    color: #94a3b8;
}

/* Episodes Section */
.episodes-section h3 {
    font-size: 2rem;
    font-weight: 600;
    margin-bottom: 2rem;
    text-align: center;
}

.episodes-list {
    display: grid;
    gap: 1.5rem;
}

.episode-card {
    background: white;
    border-radius: 16px;
    padding: 1.5rem;
    display: flex;
    align-items: center;
    gap: 1.5rem;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
    border: 2px solid transparent;
    transition: all 0.3s ease;
    cursor: pointer;
}

.episode-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.1);
    border-color: #667eea;
}

.episode-card.active {
    border-color: #ffd700;
    background: linear-gradient(135deg, #fffbf0 0%, #fff8e1 100%);
}

.episode-number {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 1.2rem;
    flex-shrink: 0;
}

.episode-card.active .episode-number {
    background: linear-gradient(135deg, #ffd700 0%, #ff6b6b 100%);
}

.episode-info {
    flex: 1;
}

.episode-info h4 {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: #1a1a1a;
}

.episode-info p {
    color: #64748b;
    margin-bottom: 1rem;
    line-height: 1.5;
}

.episode-meta {
    display: flex;
    gap: 1rem;
    font-size: 0.9rem;
}

.duration {
    color: #94a3b8;
}

.status {
    color: #10b981;
    font-weight: 500;
}

.episode-card.active .status {
    color: #f59e0b;
}

.episode-play-btn {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border: none;
    border-radius: 50%;
    color: white;
    font-size: 1.2rem;
    cursor: pointer;
    transition: all 0.3s ease;
    flex-shrink: 0;
}

.episode-card.active .episode-play-btn {
    background: linear-gradient(135deg, #ffd700 0%, #ff6b6b 100%);
}

.episode-play-btn:hover {
    transform: scale(1.1);
}

/* About Section */
.about-section {
    margin-top: 4rem;
    padding: 3rem;
    background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
    border-radius: 20px;
    border: 1px solid #e2e8f0;
}

.about-section h3 {
    font-size: 2rem;
    font-weight: 600;
    margin-bottom: 2rem;
    text-align: center;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.about-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 3rem;
    align-items: start;
}

.about-text p {
    font-size: 1.1rem;
    color: #64748b;
    margin-bottom: 2rem;
    line-height: 1.7;
}

.topics-covered h4 {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: #1a1a1a;
}

.topics-covered ul {
    list-style: none;
    padding: 0;
}

.topics-covered li {
    padding: 0.5rem 0;
    color: #64748b;
    position: relative;
    padding-left: 1.5rem;
}

.topics-covered li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: #10b981;
    font-weight: bold;
}

.stats-grid {
    display: grid;
    gap: 1rem;
}

.stat-card {
    background: white;
    padding: 1.5rem;
    border-radius: 12px;
    text-align: center;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
    border: 1px solid #e2e8f0;
}

.stat-number {
    font-size: 2rem;
    font-weight: 700;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    font-size: 0.9rem;
    color: #64748b;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* Footer */
.footer {
    text-align: center;
    padding: 2rem;
    color: #94a3b8;
    border-top: 1px solid #e2e8f0;
    margin-top: 3rem;
}

/* Animations */
@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.1); }
}

@keyframes gradient {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

/* Responsive Design */
@media (max-width: 768px) {
    .container {
        margin: 0;
    }
    
    .header {
        padding: 2rem 1rem 3rem;
    }
    
    .logo h1 {
        font-size: 2rem;
    }
    
    .main-content {
        padding: 1rem;
    }
    
    .intro-section h2 {
        font-size: 2rem;
    }
    
    .player-container {
        padding: 1.5rem;
    }
    
    .player-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.5rem;
    }
    
    .player-header h3 {
        font-size: 1.2rem;
    }
    
    .episode-card {
        flex-direction: column;
        text-align: center;
    }
    
    .episode-number {
        width: 50px;
        height: 50px;
    }
    
    .about-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .about-section {
        padding: 2rem 1rem;
    }
    
    .volume-container {
        display: none;
    }
}

@media (max-width: 480px) {
    .logo i {
        font-size: 2rem;
    }
    
    .tagline {
        font-size: 1rem;
    }
    
    .player-controls {
        gap: 1rem;
    }
    
    .control-btn {
        width: 40px;
        height: 40px;
        font-size: 1rem;
    }
    
    .play-btn {
        width: 60px;
        height: 60px;
        font-size: 1.5rem;
    }
}