:root {
    --bg-color: #0f172a;
    --panel-bg: rgba(30, 41, 59, 0.7);
    --panel-border: rgba(255, 255, 255, 0.1);
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --accent-color: #0ea5e9;
    --accent-hover: #0284c7;
    --danger: #ef4444;
    --success: #10b981;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

body {
    background-color: var(--bg-color);
    color: var(--text-primary);
    min-height: 100vh;
    display: flex;
    overflow-x: hidden;
    background-image: 
        radial-gradient(circle at 15% 50%, rgba(14, 165, 233, 0.15), transparent 25%),
        radial-gradient(circle at 85% 30%, rgba(16, 185, 129, 0.15), transparent 25%);
}

.app-container {
    display: flex;
    width: 100%;
    height: 100vh;
}

/* Sidebar */
.sidebar {
    width: 280px;
    background: var(--panel-bg);
    border-right: 1px solid var(--panel-border);
    backdrop-filter: blur(12px);
    display: flex;
    flex-direction: column;
    padding: 20px;
    transition: transform 0.3s ease;
}

.brand {
    font-size: 24px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 40px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.brand span {
    color: var(--accent-color);
}

.nav-section {
    margin-bottom: 30px;
}

.nav-title {
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--text-secondary);
    margin-bottom: 10px;
    font-weight: 600;
}

.nav-list {
    list-style: none;
}

.nav-item {
    padding: 12px 16px;
    margin-bottom: 8px;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    gap: 12px;
    color: var(--text-secondary);
}

.nav-item:hover, .nav-item.active {
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-primary);
}

.nav-item i {
    font-size: 18px;
}

/* Main Content */
.main-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    padding: 40px;
    overflow-y: auto;
}

.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 40px;
}

.header h1 {
    font-size: 28px;
    font-weight: 600;
}

/* Input Area */
.input-area {
    background: var(--panel-bg);
    border: 1px solid var(--panel-border);
    backdrop-filter: blur(12px);
    border-radius: 16px;
    padding: 30px;
    margin-bottom: 40px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.input-group {
    display: flex;
    gap: 15px;
}

.magnet-input {
    flex: 1;
    background: rgba(0, 0, 0, 0.2);
    border: 1px solid var(--panel-border);
    border-radius: 8px;
    padding: 15px 20px;
    color: var(--text-primary);
    font-size: 16px;
    transition: border-color 0.2s;
}

.magnet-input:focus {
    outline: none;
    border-color: var(--accent-color);
}

.btn {
    background: var(--accent-color);
    color: #fff;
    border: none;
    border-radius: 8px;
    padding: 15px 25px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.2s, transform 0.1s;
    display: flex;
    align-items: center;
    gap: 8px;
}

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

.btn:active {
    transform: scale(0.98);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-primary);
}
.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.15);
}

.btn-danger {
    background: var(--danger);
}
.btn-danger:hover {
    background: #dc2626;
}

/* Downloads List */
.downloads-section h2 {
    font-size: 20px;
    margin-bottom: 20px;
}

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

.download-item {
    background: var(--panel-bg);
    border: 1px solid var(--panel-border);
    border-radius: 12px;
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 15px;
    transition: transform 0.2s;
}

.download-item:hover {
    transform: translateY(-2px);
}

.download-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
}

.download-info {
    display: flex;
    align-items: center;
    gap: 15px;
}

.file-icon {
    width: 48px;
    height: 48px;
    background: rgba(14, 165, 233, 0.1);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent-color);
    font-size: 24px;
}

.file-details h3 {
    font-size: 16px;
    margin-bottom: 5px;
    word-break: break-all;
}

.file-meta {
    font-size: 13px;
    color: var(--text-secondary);
    display: flex;
    gap: 15px;
}

.download-controls {
    display: flex;
    gap: 10px;
}

.btn-icon {
    width: 36px;
    height: 36px;
    border-radius: 8px;
    border: none;
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-secondary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s;
}

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

.btn-icon.delete:hover {
    background: var(--danger);
    color: #fff;
}

/* Progress Bar */
.progress-container {
    width: 100%;
    height: 8px;
    background: rgba(0, 0, 0, 0.3);
    border-radius: 4px;
    overflow: hidden;
}

.progress-bar {
    height: 100%;
    background: var(--accent-color);
    border-radius: 4px;
    transition: width 0.3s ease;
}

.progress-bar.success {
    background: var(--success);
}

.status-text {
    font-size: 12px;
    color: var(--text-secondary);
    text-align: right;
    margin-top: -5px;
}

/* Modals */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(5px);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
    z-index: 1000;
}

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

.modal {
    background: #1e293b;
    border: 1px solid var(--panel-border);
    border-radius: 16px;
    padding: 30px;
    width: 100%;
    max-width: 400px;
    transform: translateY(20px);
    transition: transform 0.3s ease;
}

.modal-overlay.active .modal {
    transform: translateY(0);
}

.modal h2 {
    margin-bottom: 20px;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    color: var(--text-secondary);
    font-size: 14px;
}

.form-group input {
    width: 100%;
    background: rgba(0, 0, 0, 0.2);
    border: 1px solid var(--panel-border);
    border-radius: 8px;
    padding: 12px;
    color: var(--text-primary);
}

.modal-actions {
    display: flex;
    justify-content: flex-end;
    gap: 10px;
}

@media (max-width: 768px) {
    .app-container {
        flex-direction: column;
    }
    .sidebar {
        width: 100%;
        height: auto;
        border-right: none;
        border-bottom: 1px solid var(--panel-border);
        padding: 15px;
    }
    .main-content {
        padding: 20px;
    }
    .input-group {
        flex-direction: column;
    }
}