/* Main Tool Container */
.mp3c-main-wrapper {
    width: 100%;
    max-width: none;
    padding: 2rem;
    box-sizing: border-box;
}

.mp3c-tool-section {
    max-width: 1200px;
    margin: 0 auto;
    padding: 3rem 2rem;
}

.mp3c-section-title {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    color: var(--text-dark);
    text-align: center;
    font-weight: 700;
}

.mp3c-section-subtitle {
    text-align: center;
    color: var(--text-light);
    max-width: 700px;
    margin: 0 auto 3rem;
    font-size: 1.125rem;
}

/* Tool Container */
.mp3c-tool-container {
    background: var(--white);
    border-radius: 20px;
    box-shadow: var(--shadow);
    padding: 3rem;
    margin: 0 auto;
    max-width: 900px;
    position: relative;
    overflow: hidden;
}

.mp3c-tool-container::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 5px;
    background: linear-gradient(90deg, var(--secondary-color), var(--primary-color));
}

/* File Upload Area */
.mp3c-upload-area {
    border: 3px dashed #e5e7eb;
    border-radius: 16px;
    padding: 4rem 2rem;
    text-align: center;
    transition: var(--transition);
    background: var(--bg-light);
    margin-bottom: 2rem;
    position: relative;
    overflow: hidden;
}

.mp3c-upload-area:hover {
    border-color: var(--secondary-color);
    background: rgba(139, 92, 246, 0.05);
    transform: translateY(-2px);
}

.mp3c-upload-area.has-file {
    border-color: var(--success-color);
    background: rgba(16, 185, 129, 0.05);
}

.mp3c-upload-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--secondary-color), var(--primary-color));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    color: white;
    font-size: 2rem;
    animation: mp3c-pulse 2s infinite;
}

@keyframes mp3c-pulse {
    0% { transform: scale(1); }
    50% { transform: scale(1.05); }
    100% { transform: scale(1); }
}

.mp3c-upload-text {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--text-dark);
}

.mp3c-upload-subtext {
    font-size: 1rem;
    color: var(--text-light);
    margin-bottom: 2rem;
}

.mp3c-file-input {
    display: none;
}

.mp3c-upload-button {
    background: var(--secondary-color);
    color: white;
    border: none;
    padding: 1rem 2rem;
    border-radius: 12px;
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: var(--transition);
    display: inline-block;
    box-shadow: 0 4px 12px rgba(139, 92, 246, 0.2);
}

.mp3c-upload-button:hover {
    background: var(--primary-color);
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(139, 92, 246, 0.4);
}

.mp3c-upload-button:active {
    transform: translateY(-1px);
}

/* File Info Display */
.mp3c-file-info {
    display: none;
    background: linear-gradient(135deg, var(--bg-light), #f3f4f6);
    border-radius: 12px;
    padding: 1.5rem;
    margin-bottom: 2rem;
    border: 1px solid #e5e7eb;
    position: relative;
}

.mp3c-file-info.active {
    display: block;
    animation: mp3c-slideIn 0.3s ease;
}

@keyframes mp3c-slideIn {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.mp3c-file-name {
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--text-dark);
    font-size: 1.125rem;
    word-break: break-all;
}

.mp3c-file-size {
    font-size: 0.875rem;
    color: var(--text-light);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.mp3c-remove-file {
    background: var(--secondary-color);
    color: white;
    border: none;
    padding: 0.5rem 1rem;
    border-radius: 8px;
    font-size: 0.875rem;
    cursor: pointer;
    transition: var(--transition);
    margin-top: 1rem;
}

.mp3c-remove-file:hover {
    background: var(--primary-dark);
}

/* Settings Section */
.mp3c-settings-section {
    background: var(--bg-light);
    border-radius: 16px;
    padding: 2rem;
    margin-bottom: 2rem;
}

.mp3c-settings-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    color: var(--text-dark);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.mp3c-settings-title::before {
    content: '⚙️';
    font-size: 1.5rem;
}

.mp3c-settings-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.mp3c-setting-group {
    display: flex;
    flex-direction: column;
}

.mp3c-setting-label {
    font-weight: 600;
    margin-bottom: 0.75rem;
    color: var(--text-dark);
    font-size: 0.95rem;
}

.mp3c-setting-select {
    padding: 1rem;
    border: 2px solid #e5e7eb;
    border-radius: 10px;
    background: var(--white);
    font-size: 1rem;
    transition: var(--transition);
    cursor: pointer;
}

.mp3c-setting-select:focus {
    outline: none;
    border-color: var(--secondary-color);
    box-shadow: 0 0 0 4px rgba(139, 92, 246, 0.1);
}

.mp3c-setting-select:hover {
    border-color: #d1d5db;
}

/* Convert Button */
.mp3c-convert-button {
    background: linear-gradient(135deg, var(--secondary-color), var(--primary-color));
    color: white;
    border: none;
    padding: 1.25rem 2rem;
    border-radius: 12px;
    font-weight: 700;
    font-size: 1.125rem;
    cursor: pointer;
    transition: var(--transition);
    width: 100%;
    position: relative;
    overflow: hidden;
    box-shadow: 0 6px 20px rgba(139, 92, 246, 0.3);
}

.mp3c-convert-button:hover:not(:disabled) {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(139, 92, 246, 0.4);
}

.mp3c-convert-button:active:not(:disabled) {
    transform: translateY(-1px);
}

.mp3c-convert-button:disabled {
    background: #9ca3af;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

.mp3c-convert-button::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    transition: left 0.5s;
}

.mp3c-convert-button:hover::before {
    left: 100%;
}

/* Progress Section */
.mp3c-progress-section {
    margin-top: 2rem;
    display: none;
}

.mp3c-progress-section.active {
    display: block;
    animation: mp3c-fadeIn 0.3s ease;
}

@keyframes mp3c-fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.mp3c-progress-bar {
    height: 12px;
    background: #e5e7eb;
    border-radius: 6px;
    overflow: hidden;
    margin-bottom: 1rem;
    position: relative;
}

.mp3c-progress-fill {
    height: 100%;
    width: 0%;
    background: linear-gradient(90deg, var(--secondary-color), var(--primary-color));
    transition: width 0.3s ease;
    position: relative;
}

.mp3c-progress-fill::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.4), transparent);
    animation: mp3c-shine 1.5s infinite;
}

@keyframes mp3c-shine {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(100%); }
}

.mp3c-progress-text {
    font-size: 0.875rem;
    color: var(--text-light);
    text-align: center;
    font-weight: 500;
}

/* Results Section */
.mp3c-results-section {
    margin-top: 2rem;
    background: linear-gradient(135deg, var(--bg-light), #f3f4f6);
    border-radius: 16px;
    padding: 2rem;
    display: none;
    border: 1px solid #e5e7eb;
}

.mp3c-results-section.active {
    display: block;
    animation: mp3c-slideUp 0.4s ease;
}

@keyframes mp3c-slideUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.mp3c-results-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 2px solid #e5e7eb;
}

.mp3c-results-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-dark);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.mp3c-results-title::before {
    content: '✅';
    font-size: 1.5rem;
}

.mp3c-results-badge {
    background: var(--success-color);
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.875rem;
    font-weight: 600;
}

.mp3c-results-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.mp3c-result-item {
    background: var(--white);
    border-radius: 12px;
    padding: 1.5rem;
    text-align: center;
    border: 1px solid #e5e7eb;
    transition: var(--transition);
}

.mp3c-result-item:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.mp3c-result-label {
    font-size: 0.875rem;
    color: var(--text-light);
    margin-bottom: 0.5rem;
    font-weight: 500;
}

.mp3c-result-value {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--secondary-color);
}

.mp3c-download-section {
    text-align: center;
    margin-top: 2rem;
}

.mp3c-download-button {
    background: var(--success-color);
    color: white;
    border: none;
    padding: 1rem 2rem;
    border-radius: 12px;
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
    display: inline-block;
    box-shadow: 0 4px 12px rgba(16, 185, 129, 0.3);
}

.mp3c-download-button:hover {
    background: #059669;
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(16, 185, 129, 0.4);
}

.mp3c-download-button:active {
    transform: translateY(-1px);
}

/* Features Section */
.mp3c-features-section {
    max-width: 1200px;
    margin: 4rem auto 0;
    padding: 0 2rem;
}

.mp3c-features-title {
    font-size: 2rem;
    margin-bottom: 1rem;
    color: var(--text-dark);
    text-align: center;
    font-weight: 700;
}

.mp3c-features-subtitle {
    text-align: center;
    color: var(--text-light);
    max-width: 700px;
    margin: 0 auto 3rem;
    font-size: 1.125rem;
}

.mp3c-features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.mp3c-feature-card {
    background: var(--white);
    border-radius: 16px;
    padding: 2rem;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    transition: var(--transition);
    text-align: center;
    border: 1px solid #f3f4f6;
}

.mp3c-feature-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow);
}

.mp3c-feature-icon {
    width: 70px;
    height: 70px;
    background: linear-gradient(135deg, var(--secondary-color), var(--primary-color));
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 2rem;
    margin: 0 auto 1.5rem;
}

.mp3c-feature-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--text-dark);
}

.mp3c-feature-description {
    color: var(--text-light);
    line-height: 1.6;
    font-size: 0.95rem;
}

/* How It Works Section */
.mp3c-how-section {
    max-width: 1200px;
    margin: 4rem auto 0;
    padding: 0 2rem;
}

.mp3c-how-title {
    font-size: 2rem;
    margin-bottom: 1rem;
    color: var(--text-dark);
    text-align: center;
    font-weight: 700;
}

.mp3c-how-subtitle {
    text-align: center;
    color: var(--text-light);
    max-width: 700px;
    margin: 0 auto 3rem;
    font-size: 1.125rem;
}

.mp3c-steps-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.mp3c-step {
    text-align: center;
    position: relative;
}

.mp3c-step-number {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--secondary-color), var(--primary-color));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.5rem;
    font-weight: 700;
    margin: 0 auto 1.5rem;
    box-shadow: 0 4px 12px rgba(139, 92, 246, 0.3);
}

.mp3c-step-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--text-dark);
}

.mp3c-step-description {
    color: var(--text-light);
    line-height: 1.6;
    font-size: 0.95rem;
}

/* FAQ Section */
.mp3c-faq-section {
    max-width: 900px;
    margin: 4rem auto 0;
    padding: 0 2rem;
}

.mp3c-faq-title {
    font-size: 2rem;
    margin-bottom: 1rem;
    color: var(--text-dark);
    text-align: center;
    font-weight: 700;
}

.mp3c-faq-subtitle {
    text-align: center;
    color: var(--text-light);
    max-width: 700px;
    margin: 0 auto 3rem;
    font-size: 1.125rem;
}

.mp3c-faq-container {
    margin-top: 3rem;
}

.mp3c-faq-item {
    background: var(--white);
    border-radius: 12px;
    margin-bottom: 1rem;
    overflow: hidden;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
    border: 1px solid #f3f4f6;
    transition: var(--transition);
}

.mp3c-faq-item:hover {
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.mp3c-faq-question {
    padding: 1.5rem;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: var(--text-dark);
    transition: var(--transition);
    font-size: 1.05rem;
}

.mp3c-faq-question:hover {
    background: var(--bg-light);
}

.mp3c-faq-toggle {
    width: 30px;
    height: 30px;
    background: var(--secondary-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1rem;
    transition: var(--transition);
    flex-shrink: 0;
}

.mp3c-faq-answer {
    padding: 0 1.5rem;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
    color: var(--text-light);
    line-height: 1.6;
}

.mp3c-faq-item.active .faq-answer {
    padding: 0 1.5rem 1.5rem;
    max-height: 500px;
}

.mp3c-faq-item.active .faq-toggle {
    transform: rotate(45deg);
    background: var(--primary-color);
}

/* Loading State */
.mp3c-loading {
    position: relative;
    pointer-events: none;
}

.mp3c-loading::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255, 255, 255, 0.8);
    border-radius: inherit;
    display: flex;
    align-items: center;
    justify-content: center;
    backdrop-filter: blur(2px);
}

.mp3c-spinner {
    width: 50px;
    height: 50px;
    border: 4px solid rgba(139, 92, 246, 0.2);
    border-top: 4px solid var(--secondary-color);
    border-radius: 50%;
    animation: mp3c-spin 1s linear infinite;
}

@keyframes mp3c-spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Mobile Responsive */
@media (max-width: 768px) {
    .mp3c-main-wrapper {
        padding: 1rem;
    }
    
    .mp3c-tool-section {
        padding: 2rem 1rem;
    }
    
    .mp3c-section-title {
        font-size: 2rem;
    }
    
    .mp3c-tool-container {
        padding: 2rem 1.5rem;
    }
    
    .mp3c-upload-area {
        padding: 3rem 1.5rem;
    }
    
    .mp3c-settings-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .mp3c-results-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .mp3c-features-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .mp3c-steps-container {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .mp3c-faq-question {
        font-size: 1rem;
        padding: 1.25rem;
    }
}

@media (max-width: 480px) {
    .mp3c-section-title {
        font-size: 1.75rem;
    }
    
    .mp3c-section-subtitle,
    .mp3c-features-subtitle,
    .mp3c-how-subtitle,
    .mp3c-faq-subtitle {
        font-size: 1rem;
    }
    
    .mp3c-tool-container {
        padding: 1.5rem 1rem;
    }
    
    .mp3c-upload-area {
        padding: 2rem 1rem;
    }
    
    .mp3c-upload-icon {
        width: 60px;
        height: 60px;
        font-size: 1.5rem;
    }
    
    .mp3c-convert-button {
        padding: 1rem 1.5rem;
        font-size: 1rem;
    }
}

/* Tablet Responsive */
@media (min-width: 769px) and (max-width: 1024px) {
    .mp3c-features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .mp3c-steps-container {
        grid-template-columns: repeat(2, 1fr);
    }
}