/* BADUT DRIVE — Modern Dark Theme */
:root {
    --bg-primary: #0a0e14;
    --bg-secondary: #0f1419;
    --bg-tertiary: #151b23;
    --bg-elevated: #1c2430;
    --bg-hover: #232d3b;
    --border: #1e2732;
    --border-light: #2a3542;
    --text-primary: #e8edf2;
    --text-secondary: #8b9bab;
    --text-muted: #5c6b7a;
    --accent: #00d4aa;
    --accent-hover: #00b894;
    --accent-secondary: #3b82f6;
    --success: #10b981;
    --warning: #f59e0b;
    --error: #ef4444;
    --radius: 12px;
    --radius-sm: 8px;
    --shadow: 0 4px 24px rgba(0, 0, 0, 0.4);
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.2);
    --transition: all 0.2s ease;
}

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

html { font-size: 16px; }

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

.hidden { display: none !important; }

/* Scrollbar */
::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-track { background: var(--bg-secondary); }
::-webkit-scrollbar-thumb { background: var(--border-light); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-muted); }

/* ===== LOGIN SCREEN ===== */
.screen {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.login-container {
    width: 100%;
    max-width: 420px;
}

.login-logo {
    text-align: center;
    margin-bottom: 40px;
}

.logo-icon {
    font-size: 64px;
    display: block;
    margin-bottom: 16px;
}

.login-logo h1 {
    font-size: 28px;
    font-weight: 700;
    letter-spacing: -0.5px;
    margin-bottom: 8px;
    background: linear-gradient(135deg, var(--accent), var(--accent-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.login-logo p {
    color: var(--text-secondary);
    font-size: 15px;
}

.login-form {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 32px;
    box-shadow: var(--shadow);
}

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

.input-group label {
    display: block;
    font-size: 13px;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 8px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.input-group input {
    width: 100%;
    padding: 14px 16px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 15px;
    transition: var(--transition);
}

.input-group input:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(0, 212, 170, 0.1);
}

.input-group input::placeholder {
    color: var(--text-muted);
}

/* ===== BUTTONS ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 20px;
    border: none;
    border-radius: var(--radius-sm);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent), var(--accent-hover));
    color: #000;
}

.btn-primary:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(0, 212, 170, 0.3);
}

.btn-secondary {
    background: var(--bg-elevated);
    color: var(--text-primary);
    border: 1px solid var(--border-light);
}

.btn-secondary:hover {
    background: var(--bg-hover);
    border-color: var(--accent);
}

.btn-full { width: 100%; padding: 14px; font-size: 15px; }

.btn-icon {
    padding: 8px;
    background: transparent;
    border: none;
    color: var(--text-secondary);
    font-size: 18px;
    cursor: pointer;
    border-radius: var(--radius-sm);
    transition: var(--transition);
}

.btn-icon:hover {
    background: var(--bg-elevated);
    color: var(--text-primary);
}

.btn-loader {
    animation: spin 1s linear infinite;
}

@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.error-text {
    color: var(--error);
    font-size: 14px;
    margin-top: 16px;
    text-align: center;
}

/* ===== APP LAYOUT ===== */
.app {
    display: flex;
    min-height: 100vh;
}

/* Sidebar */
.sidebar {
    width: 260px;
    background: var(--bg-secondary);
    border-right: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    position: fixed;
    height: 100vh;
    z-index: 100;
    transition: var(--transition);
}

.sidebar-header {
    padding: 20px;
    border-bottom: 1px solid var(--border);
}

.sidebar-logo {
    display: flex;
    align-items: center;
    gap: 12px;
}

.sidebar-logo .logo-icon {
    font-size: 28px;
    margin: 0;
}

.logo-text {
    font-size: 18px;
    font-weight: 700;
    background: linear-gradient(135deg, var(--accent), var(--accent-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.sidebar-nav {
    flex: 1;
    padding: 16px 12px;
    overflow-y: auto;
}

.nav-section {
    margin-bottom: 24px;
}

.nav-label {
    display: block;
    font-size: 11px;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
    padding: 0 12px;
    margin-bottom: 8px;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 12px;
    color: var(--text-secondary);
    text-decoration: none;
    border-radius: var(--radius-sm);
    transition: var(--transition);
    margin-bottom: 2px;
    position: relative;
}

.nav-item:hover {
    background: var(--bg-elevated);
    color: var(--text-primary);
}

.nav-item.active {
    background: linear-gradient(135deg, rgba(0, 212, 170, 0.1), rgba(59, 130, 246, 0.1));
    color: var(--accent);
}

.nav-icon {
    font-size: 18px;
    width: 24px;
    text-align: center;
}

.nav-text {
    flex: 1;
    font-size: 14px;
}

.nav-badge {
    background: var(--accent);
    color: #000;
    font-size: 11px;
    font-weight: 600;
    padding: 2px 8px;
    border-radius: 10px;
}

.sidebar-footer {
    padding: 16px;
    border-top: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.user-info {
    display: flex;
    align-items: center;
    gap: 12px;
}

.user-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--accent), var(--accent-secondary));
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    color: #000;
    font-size: 16px;
}

.user-details {
    display: flex;
    flex-direction: column;
}

.user-name {
    font-size: 14px;
    font-weight: 500;
}

.user-role {
    font-size: 12px;
    color: var(--text-muted);
}

/* Main Content */
.main {
    flex: 1;
    margin-left: 260px;
    display: flex;
    flex-direction: column;
}

/* Topbar */
.topbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 24px;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 50;
}

.topbar-left {
    display: flex;
    align-items: center;
    gap: 16px;
}

.search-box {
    display: flex;
    align-items: center;
    gap: 12px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 10px 16px;
    width: 320px;
    transition: var(--transition);
}

.search-box:focus-within {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(0, 212, 170, 0.1);
}

.search-icon {
    color: var(--text-muted);
    font-size: 16px;
}

.search-box input {
    flex: 1;
    background: transparent;
    border: none;
    color: var(--text-primary);
    font-size: 14px;
}

.search-box input:focus {
    outline: none;
}

.search-box input::placeholder {
    color: var(--text-muted);
}

/* Content */
.content {
    flex: 1;
    padding: 24px;
    overflow-y: auto;
}

.view { display: none; }
.view.active { display: block; }

.view-header {
    margin-bottom: 24px;
}

.view-header h1 {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 4px;
}

.view-subtitle {
    color: var(--text-secondary);
    font-size: 14px;
}

.view-actions {
    display: flex;
    gap: 12px;
}

/* Breadcrumb */
.breadcrumb {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 16px;
}

.breadcrumb-item {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 14px;
    transition: var(--transition);
}

.breadcrumb-item:hover {
    color: var(--accent);
}

.breadcrumb-separator {
    color: var(--text-muted);
}

.breadcrumb-item.current {
    color: var(--text-primary);
    font-weight: 500;
}

/* Stats Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 20px;
    margin-bottom: 32px;
}

.stat-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 24px;
    display: flex;
    align-items: center;
    gap: 16px;
    transition: var(--transition);
}

.stat-card:hover {
    border-color: var(--border-light);
    transform: translateY(-2px);
}

.stat-icon {
    width: 56px;
    height: 56px;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
}

.stat-icon.storage { background: rgba(0, 212, 170, 0.1); }
.stat-icon.files { background: rgba(59, 130, 246, 0.1); }
.stat-icon.folders { background: rgba(168, 85, 247, 0.1); }
.stat-icon.nodes { background: rgba(245, 158, 11, 0.1); }

.stat-content {
    display: flex;
    flex-direction: column;
}

.stat-value {
    font-size: 28px;
    font-weight: 700;
}

.stat-label {
    font-size: 13px;
    color: var(--text-secondary);
}

/* Dashboard Sections */
.dashboard-sections {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
}

.section {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
}

.section-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 24px;
    border-bottom: 1px solid var(--border);
}

.section-header h2 {
    font-size: 16px;
    font-weight: 600;
}

.section-link {
    font-size: 13px;
    color: var(--accent);
    text-decoration: none;
}

.section-link:hover {
    text-decoration: underline;
}

/* File List */
.file-list {
    padding: 12px;
}

.file-item {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 12px 16px;
    border-radius: var(--radius-sm);
    transition: var(--transition);
    cursor: pointer;
}

.file-item:hover {
    background: var(--bg-elevated);
}

.file-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-sm);
    background: var(--bg-tertiary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
}

.file-info {
    flex: 1;
    min-width: 0;
}

.file-name {
    font-size: 14px;
    font-weight: 500;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.file-meta {
    font-size: 12px;
    color: var(--text-muted);
}

.file-actions {
    display: flex;
    gap: 4px;
    opacity: 0;
    transition: var(--transition);
}

.file-item:hover .file-actions {
    opacity: 1;
}

/* File Grid */
.file-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 16px;
}

.file-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 20px;
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
    position: relative;
}

.file-card:hover {
    border-color: var(--accent);
    transform: translateY(-2px);
    box-shadow: var(--shadow-sm);
}

.file-card.selected {
    border-color: var(--accent);
    background: rgba(0, 212, 170, 0.05);
}

.file-card-icon {
    font-size: 48px;
    margin-bottom: 12px;
}

.file-card-name {
    font-size: 14px;
    font-weight: 500;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    margin-bottom: 4px;
}

.file-card-meta {
    font-size: 12px;
    color: var(--text-muted);
}

.file-card-actions {
    position: absolute;
    top: 8px;
    right: 8px;
    display: flex;
    gap: 4px;
    opacity: 0;
    transition: var(--transition);
}

.file-card:hover .file-card-actions {
    opacity: 1;
}

/* Nodes List */
.nodes-list {
    padding: 12px;
}

.node-item {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 16px;
    border-radius: var(--radius-sm);
    transition: var(--transition);
}

.node-item:hover {
    background: var(--bg-elevated);
}

.node-status-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}

.node-status-dot.online { background: var(--success); box-shadow: 0 0 8px rgba(16, 185, 129, 0.4); }
.node-status-dot.offline { background: var(--error); }
.node-status-dot.connecting { background: var(--warning); animation: pulse 1.5s infinite; }

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

.node-info {
    flex: 1;
}

.node-name {
    font-size: 14px;
    font-weight: 500;
    margin-bottom: 2px;
}

.node-meta {
    font-size: 12px;
    color: var(--text-muted);
}

/* Empty State */
.empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 60px 20px;
    text-align: center;
}

.empty-icon {
    font-size: 48px;
    margin-bottom: 16px;
    opacity: 0.5;
}

.empty-state p {
    color: var(--text-secondary);
    margin-bottom: 16px;
}

/* Transfers */
.transfers-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.transfer-item {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 20px;
}

.transfer-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 12px;
}

.transfer-name {
    font-size: 14px;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 8px;
}

.transfer-type {
    font-size: 11px;
    padding: 4px 8px;
    border-radius: 4px;
    background: var(--bg-elevated);
}

.transfer-type.upload { color: var(--accent); }
.transfer-type.download { color: var(--accent-secondary); }

.transfer-status {
    font-size: 12px;
    padding: 4px 12px;
    border-radius: 12px;
    font-weight: 500;
}

.transfer-status.pending { background: rgba(245, 158, 11, 0.1); color: var(--warning); }
.transfer-status.processing { background: rgba(59, 130, 246, 0.1); color: var(--accent-secondary); }
.transfer-status.completed { background: rgba(16, 185, 129, 0.1); color: var(--success); }
.transfer-status.failed { background: rgba(239, 68, 68, 0.1); color: var(--error); }

.transfer-progress {
    height: 6px;
    background: var(--bg-tertiary);
    border-radius: 3px;
    overflow: hidden;
    margin-bottom: 8px;
}

.transfer-progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--accent), var(--accent-secondary));
    transition: width 0.3s ease;
}

.transfer-meta {
    display: flex;
    justify-content: space-between;
    font-size: 12px;
    color: var(--text-muted);
}

/* Admin */
.admin-tabs {
    display: flex;
    gap: 8px;
    margin-bottom: 24px;
    background: var(--bg-secondary);
    padding: 6px;
    border-radius: var(--radius);
    border: 1px solid var(--border);
    width: fit-content;
}

.tab-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    background: transparent;
    border: none;
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    font-size: 14px;
    cursor: pointer;
    transition: var(--transition);
}

.tab-btn:hover {
    color: var(--text-primary);
}

.tab-btn.active {
    background: var(--bg-elevated);
    color: var(--accent);
}

.admin-content {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    min-height: 400px;
}

/* Node Cards in Admin */
.node-card {
    background: var(--bg-tertiary);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 24px;
    margin: 16px;
}

.node-card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 16px;
}

.node-card-name {
    font-size: 18px;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 12px;
}

.node-card-status {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 6px 12px;
    border-radius: 20px;
    font-size: 13px;
    font-weight: 500;
}

.node-card-status.online { background: rgba(16, 185, 129, 0.1); color: var(--success); }
.node-card-status.offline { background: rgba(239, 68, 68, 0.1); color: var(--error); }
.node-card-status.connecting { background: rgba(245, 158, 11, 0.1); color: var(--warning); }

.node-card-body {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 16px;
    margin-bottom: 16px;
}

.node-stat {
    display: flex;
    flex-direction: column;
}

.node-stat-value {
    font-size: 20px;
    font-weight: 600;
}

.node-stat-label {
    font-size: 12px;
    color: var(--text-muted);
}

.node-card-actions {
    display: flex;
    gap: 8px;
}

.node-card-actions .btn {
    padding: 8px 16px;
    font-size: 13px;
}

/* Modal */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-backdrop {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(4px);
}

.modal-content {
    position: relative;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    width: 90%;
    max-width: 480px;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: var(--shadow);
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 24px;
    border-bottom: 1px solid var(--border);
}

.modal-header h2 {
    font-size: 18px;
    font-weight: 600;
}

.modal-close {
    font-size: 24px;
    line-height: 1;
}

.modal-body {
    padding: 24px;
}

/* Form in Modal */
.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    font-size: 13px;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 8px;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px 16px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 14px;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent);
}

.form-actions {
    display: flex;
    gap: 12px;
    justify-content: flex-end;
}

/* Toast */
.toast-container {
    position: fixed;
    bottom: 24px;
    right: 24px;
    z-index: 2000;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.toast {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px 20px;
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow);
    animation: slideIn 0.3s ease;
    min-width: 300px;
}

@keyframes slideIn {
    from { transform: translateX(100%); opacity: 0; }
    to { transform: translateX(0); opacity: 1; }
}

.toast.success { border-left: 4px solid var(--success); }
.toast.error { border-left: 4px solid var(--error); }
.toast.warning { border-left: 4px solid var(--warning); }
.toast.info { border-left: 4px solid var(--accent-secondary); }

.toast-icon {
    font-size: 20px;
}

.toast-message {
    flex: 1;
    font-size: 14px;
}

/* Responsive */
@media (max-width: 1024px) {
    .dashboard-sections {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .sidebar {
        width: 72px;
    }
    
    .sidebar-header .logo-text,
    .nav-label,
    .nav-text,
    .user-details {
        display: none;
    }
    
    .nav-item {
        justify-content: center;
        padding: 12px;
    }
    
    .nav-badge {
        position: absolute;
        top: 4px;
        right: 4px;
    }
    
    .main {
        margin-left: 72px;
    }
    
    .user-avatar {
        width: 32px;
        height: 32px;
        font-size: 14px;
    }
    
    .search-box {
        width: 200px;
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .file-grid {
        grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    }
}

@media (max-width: 480px) {
    .topbar {
        padding: 12px 16px;
    }
    
    .content {
        padding: 16px;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .search-box {
        width: 150px;
    }
    
    .btn span:last-child {
        display: none;
    }
}