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

body {
    font-family: var(--font-body, -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Helvetica Neue', Arial, sans-serif);
    background: #0f0f0f;
    min-height: 100vh;
    padding: 0;
    color: #ffffff;
    overflow-y: scroll;
}

.main-container {
    max-width: 1400px;
    margin: 0 auto;
}

.page-content {
    padding: 20px;
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.container {
    max-width: 900px;
    width: 100%;
    margin: 0 auto;
}

header {
    text-align: center;
    color: white;
    margin-bottom: 40px;
    animation: fadeInDown 0.6s ease-out;
}

header h1 {
    font-size: 2.5rem;
    margin-bottom: 8px;
    font-weight: 700;
    letter-spacing: -0.5px;
    color: #fff;
}

header .subtitle {
    font-size: 1rem;
    opacity: 0.7;
    font-weight: 400;
    color: #b0b0b0;
}

.download-section {
    background: #1a1a1a;
    padding: 30px;
    border-radius: 16px;
    border: 1px solid #2a2a2a;
    margin: 0 auto 30px;
    animation: fadeInUp 0.6s ease-out;
    width: 1000px;
    max-width: calc(100vw - 40px);
}

.input-group {
    display: flex;
    gap: 10px;
    margin-bottom: 15px;
    align-items: center;
}

#urlInput {
    flex: 1;
    min-width: 0;
    padding: 15px 20px;
    border: 1px solid #2a2a2a;
    border-radius: 10px;
    font-size: 16px;
    background: #0f0f0f;
    color: #fff;
    transition: all 0.2s ease;
}

#urlInput:focus {
    outline: none;
    border-color: #00ff88;
    background: #1a1a1a;
}

#urlInput::placeholder {
    color: #666;
}

.quality-select {
    padding: 15px 20px;
    border: 1px solid #2a2a2a;
    border-radius: 10px;
    font-size: 16px;
    background: #0f0f0f;
    color: #fff;
    cursor: pointer;
    transition: all 0.2s ease;
    min-width: 160px;
}

.quality-select:hover {
    border-color: #00ff88;
    background: #1a1a1a;
}

.quality-select:focus {
    outline: none;
    border-color: #00ff88;
    background: #1a1a1a;
}

.quality-select option {
    background: #1a1a1a;
    color: #fff;
}

#downloadBtn {
    padding: 15px 40px;
    background: #00ff88;
    color: #000;
    border: none;
    border-radius: 10px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    min-width: 150px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
}

#downloadBtn:hover {
    background: #00dd77;
    transform: translateY(-1px);
}

#downloadBtn:active {
    transform: translateY(0);
}

#downloadBtn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
}

.loader {
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255,255,255,0.3);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.error-message {
    color: #ff5252;
    font-size: 14px;
    display: none;
    padding: 10px;
    background: rgba(255, 82, 82, 0.1);
    border-radius: 8px;
    border: 1px solid rgba(255, 82, 82, 0.3);
}

.error-message.show {
    display: block;
    animation: shake 0.5s ease-out;
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-10px); }
    75% { transform: translateX(10px); }
}

.downloads-container {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.download-card {
    background: #1a1a1a;
    padding: 20px;
    border-radius: 12px;
    border: 1px solid #2a2a2a;
    animation: slideIn 0.4s ease-out;
    transition: opacity 0.3s ease, transform 0.3s ease;
    max-width: 1000px;
    margin: 0 auto;
    width: 100%;
}

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

.download-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 15px;
    gap: 15px;
}

.download-title-section {
    flex: 1;
    min-width: 0;
}

.download-title {
    font-size: 16px;
    font-weight: 600;
    color: #fff;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    margin-bottom: 4px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.playlist-badge {
    display: inline-block;
    padding: 3px 10px;
    background: rgba(0, 255, 136, 0.15);
    border: 1px solid rgba(0, 255, 136, 0.3);
    border-radius: 12px;
    font-size: 12px;
    font-weight: 500;
    color: #00ff88;
    white-space: nowrap;
}

.download-url-small {
    font-size: 12px;
    color: #666;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.download-actions {
    display: flex;
    gap: 8px;
    align-items: center;
    flex-shrink: 0;
}

.status-badge {
    padding: 6px 14px;
    border-radius: 20px;
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    white-space: nowrap;
}

.cancel-btn {
    padding: 6px 14px;
    background: transparent;
    color: #ff5252;
    border: 1px solid #ff5252;
    border-radius: 6px;
    font-size: 12px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    white-space: nowrap;
}

.cancel-btn:hover {
    background: rgba(255, 82, 82, 0.15);
    transform: scale(1.05);
}

.cancel-btn:active {
    transform: scale(0.95);
}

.status-queued {
    background: rgba(255, 193, 7, 0.15);
    color: #ffc107;
    border: 1px solid rgba(255, 193, 7, 0.3);
}

.status-downloading {
    background: rgba(0, 255, 136, 0.15);
    color: #00ff88;
    border: 1px solid rgba(0, 255, 136, 0.3);
}

.status-completed {
    background: rgba(0, 255, 136, 0.15);
    color: #00ff88;
    border: 1px solid rgba(0, 255, 136, 0.3);
}

.status-failed {
    background: rgba(255, 82, 82, 0.15);
    color: #ff5252;
    border: 1px solid rgba(255, 82, 82, 0.3);
}

.status-cancelled {
    background: rgba(158, 158, 158, 0.15);
    color: #9e9e9e;
    border: 1px solid rgba(158, 158, 158, 0.3);
}

.progress-bar {
    width: 100%;
    height: 6px;
    background: #0f0f0f;
    border-radius: 10px;
    overflow: hidden;
    margin: 10px 0;
}

.progress-fill {
    height: 100%;
    background: #00ff88;
    border-radius: 10px;
    transition: width 0.3s ease;
}

.download-files {
    margin-top: 15px;
}

.download-files h4 {
    font-size: 14px;
    margin-bottom: 10px;
    color: #999;
}

.file-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.file-item {
    padding: 10px 15px;
    background: rgba(0, 255, 136, 0.1);
    border-radius: 8px;
    border: 1px solid rgba(0, 255, 136, 0.2);
    font-size: 14px;
}

.file-name {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    color: #00ff88;
}

.logs-section {
    margin-top: 15px;
    padding: 15px;
    background: #0a0a0a;
    border-radius: 8px;
    border: 1px solid #2a2a2a;
    max-height: 200px;
    overflow-y: auto;
    min-height: 100px;
}

.logs-section::-webkit-scrollbar {
    width: 6px;
}

.logs-section::-webkit-scrollbar-track {
    background: #0f0f0f;
    border-radius: 3px;
}

.logs-section::-webkit-scrollbar-thumb {
    background: #00ff88;
    border-radius: 3px;
}

.log-line {
    font-family: 'Courier New', monospace;
    font-size: 12px;
    color: #00ff88;
    margin-bottom: 4px;
    line-height: 1.4;
}

.info-section {
    background: #1a1a1a;
    padding: 30px;
    border-radius: 16px;
    border: 1px solid #2a2a2a;
    margin: 30px auto 0;
    animation: fadeInUp 0.6s ease-out 0.2s both;
    text-align: center;
    width: 1000px;
    max-width: calc(100vw - 40px);
}

.info-section h3 {
    margin-bottom: 15px;
    color: #00ff88;
}

.info-section ul {
    list-style: none;
    margin-bottom: 20px;
    display: inline-block;
    text-align: left;
}

.info-section li {
    padding: 8px 0;
    font-size: 16px;
    color: #e0e0e0;
}

.note {
    color: #999;
    font-size: 14px;
    font-style: italic;
}

footer {
    text-align: center;
    color: white;
    margin-top: 40px;
    padding: 20px;
    opacity: 0.9;
}

footer a {
    color: white;
    text-decoration: underline;
}

.notification {
    position: fixed;
    top: 20px;
    right: 20px;
    padding: 15px 25px;
    border-radius: 10px;
    background: #1a1a1a;
    border: 1px solid #2a2a2a;
    color: #fff;
    font-size: 14px;
    font-weight: 500;
    box-shadow: 0 5px 20px rgba(0,0,0,0.3);
    opacity: 0;
    transform: translateX(100px);
    transition: all 0.3s ease;
    z-index: 10000;
    max-width: 400px;
}

.notification.show {
    opacity: 1;
    transform: translateX(0);
}

.notification-success {
    border-left: 4px solid #00ff88;
}

.notification-error {
    border-left: 4px solid #ff5252;
}

.notification-info {
    border-left: 4px solid #00b8ff;
}

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

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

@media (max-width: 768px) {
    body {
        padding: 20px 15px;
    }

    .container {
        max-width: 100%;
    }

    .app-header h1 {
        font-size: 2.5rem !important;
    }

    .app-header .subtitle {
        font-size: 1.1rem !important;
    }

    .download-section {
        padding: 25px 20px;
        border-radius: 12px;
    }

    .input-group {
        flex-direction: column;
        gap: 12px;
    }

    #urlInput {
        width: 100%;
        min-width: 100%;
        font-size: 16px;
    }

    .quality-select {
        width: 100%;
        min-width: 100%;
    }

    #downloadBtn {
        width: 100%;
        padding: 16px 40px;
    }

    .download-card {
        padding: 18px;
    }

    .download-header {
        flex-direction: column;
        gap: 12px;
        align-items: flex-start;
    }

    .download-actions {
        width: 100%;
        justify-content: space-between;
    }

    .info-section {
        padding: 20px;
    }

    .info-section h3 {
        font-size: 1.2rem;
    }

    .info-section li {
        font-size: 15px;
    }

    .notification {
        max-width: calc(100% - 40px);
        right: 20px;
        left: 20px;
    }
}

@media (max-width: 480px) {
    body {
        padding: 15px 10px;
    }

    .app-header h1 {
        font-size: 2rem !important;
        margin-bottom: 12px !important;
    }

    .app-header .subtitle {
        font-size: 1rem !important;
        padding: 0 5px;
    }

    .download-section {
        padding: 20px 16px;
        border-radius: 12px;
    }

    .input-group {
        gap: 10px;
    }

    #urlInput,
    .quality-select,
    #downloadBtn {
        font-size: 15px;
        padding: 14px 18px;
    }

    .download-card {
        padding: 16px;
        border-radius: 10px;
    }

    .download-title {
        font-size: 14px;
    }

    .download-url-small {
        font-size: 11px;
    }

    .status-badge {
        padding: 5px 12px;
        font-size: 10px;
    }

    .cancel-btn {
        padding: 5px 12px;
        font-size: 11px;
    }

    .info-section {
        padding: 18px;
        margin-top: 20px;
    }

    .info-section h3 {
        font-size: 1.1rem;
        margin-bottom: 12px;
    }

    .info-section li {
        font-size: 14px;
        padding: 6px 0;
    }

    .note {
        font-size: 13px;
    }

    .logs-section {
        padding: 12px;
        max-height: 150px;
    }

    .log-line {
        font-size: 11px;
    }

    .notification {
        font-size: 13px;
        padding: 12px 18px;
    }
}

/* Stats Section */
.stats-section {
    display: flex;
    justify-content: center;
    gap: 30px;
    margin: 30px auto;
    width: 1000px;
    max-width: calc(100vw - 40px);
}

.stat-item {
    background: linear-gradient(135deg, rgba(0, 255, 136, 0.1), rgba(0, 184, 255, 0.1));
    border: 1px solid rgba(0, 255, 136, 0.3);
    border-radius: 16px;
    padding: 24px 40px;
    text-align: center;
    flex: 1;
    transition: all 0.3s ease;
}

.stat-item:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(0, 255, 136, 0.2);
    border-color: rgba(0, 255, 136, 0.5);
}

.stat-number {
    display: block;
    font-size: 3rem;
    font-weight: 700;
    color: #ffffff;
    margin-bottom: 8px;
    line-height: 1;
}

.stat-label {
    display: block;
    font-size: 0.95rem;
    color: #b0b0b0;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 1px;
}

@media (max-width: 768px) {
    .stats-section {
        flex-direction: column;
        gap: 15px;
    }

    .stat-number {
        font-size: 2.5rem;
    }

    .stat-item {
        padding: 20px;
    }
}

.stat-number-actual {
    display: block;
    font-size: 0.9rem;
    color: #666;
    font-weight: 400;
    margin-top: 4px;
    margin-bottom: 8px;
}