/* Cloud Explorer - Modern File Manager Styles */

:root {
    --bg: #0f1117;
    --surface: #1a1d27;
    --surface2: #242836;
    --border: #2e3345;
    --text: #e8eaed;
    --text-muted: #9aa0b0;
    --primary: #4f8cff;
    --primary-hover: #3a7aef;
    --danger: #ff5c5c;
    --danger-hover: #e84545;
    --success: #3ecf8e;
    --warning: #f5a623;
    --radius: 10px;
    --shadow: 0 8px 32px rgba(0,0,0,0.4);
    --font: "Segoe UI", system-ui, -apple-system, sans-serif;
}

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

body {
    font-family: var(--font);
    background: linear-gradient(145deg, #0c0e14 0%, #151925 100%);
    color: var(--text);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

/* Window chrome */
.window {
    width: 100%;
    max-width: 1100px;
    height: 90vh;
    max-height: 780px;
    background: var(--surface);
    border-radius: 14px;
    box-shadow: var(--shadow);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    border: 1px solid var(--border);
}

.titlebar {
    background: var(--surface2);
    padding: 10px 16px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-bottom: 1px solid var(--border);
    user-select: none;
}

.title {
    font-weight: 600;
    font-size: 14px;
    letter-spacing: 0.3px;
}

.window-buttons {
    display: flex;
    gap: 6px;
}

.window-buttons button {
    width: 28px;
    height: 22px;
    border: none;
    border-radius: 6px;
    background: var(--border);
    color: var(--text-muted);
    font-size: 12px;
    cursor: default;
    line-height: 1;
}

.window-buttons button:last-child:hover {
    background: var(--danger);
    color: white;
}

/* Toolbar */
.toolbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding: 12px 16px;
    background: var(--surface);
    border-bottom: 1px solid var(--border);
    flex-wrap: wrap;
}

.toolbar-group {
    display: flex;
    gap: 8px;
    align-items: center;
}

.btn, .btn-sm, .upload-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 14px;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: var(--surface2);
    color: var(--text);
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    transition: background 0.15s, border-color 0.15s;
    text-decoration: none;
    font-family: inherit;
}

.btn:hover, .upload-btn:hover {
    background: #2c3142;
    border-color: #3d445c;
}

.btn-primary {
    background: var(--primary);
    border-color: var(--primary);
    color: white;
}

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

.btn-danger {
    background: var(--danger);
    border-color: var(--danger);
    color: white;
}

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

.btn-sm {
    padding: 4px 8px;
    font-size: 12px;
    border-radius: 6px;
}

.btn-icon {
    background: transparent;
    border: none;
    color: var(--text-muted);
    font-size: 18px;
    cursor: pointer;
    padding: 2px 6px;
    line-height: 1;
}

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

.search-input, .form-input {
    padding: 8px 12px;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: var(--bg);
    color: var(--text);
    font-size: 13px;
    outline: none;
    min-width: 180px;
    font-family: inherit;
}

.search-input:focus, .form-input:focus {
    border-color: var(--primary);
}

/* Address bar */
.address {
    padding: 8px 16px;
    background: var(--bg);
    border-bottom: 1px solid var(--border);
    font-size: 13px;
    display: flex;
    align-items: center;
    gap: 4px;
    flex-wrap: wrap;
}

.crumb {
    color: var(--text-muted);
    text-decoration: none;
}

.crumb:hover {
    color: var(--primary);
}

.crumb.current {
    color: var(--text);
}

.sep {
    color: var(--border);
    margin: 0 2px;
}

/* Content layout */
.content {
    display: flex;
    flex: 1;
    overflow: hidden;
}

.sidebar {
    width: 180px;
    background: var(--surface2);
    border-right: 1px solid var(--border);
    padding: 16px 12px;
    flex-shrink: 0;
    overflow-y: auto;
}

.sidebar h3 {
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.8px;
    color: var(--text-muted);
    margin: 12px 0 8px;
}

.sidebar h3:first-child {
    margin-top: 0;
}

.side-item {
    padding: 7px 10px;
    border-radius: 7px;
    font-size: 13px;
    color: var(--text-muted);
    cursor: default;
}

.side-item:hover {
    background: var(--border);
    color: var(--text);
}

.storage-bar {
    height: 6px;
    background: var(--border);
    border-radius: 3px;
    margin: 10px 0 4px;
    overflow: hidden;
}

.storage-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--primary), #7b5cff);
    border-radius: 3px;
}

.storage-text {
    font-size: 11px;
    color: var(--text-muted);
}

/* Files grid */
.files {
    flex: 1;
    overflow-y: auto;
    padding: 16px;
    background: var(--bg);
}

.file-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    gap: 12px;
}

.file {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 14px 12px 10px;
    text-align: center;
    transition: border-color 0.15s, transform 0.15s, box-shadow 0.15s;
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
}

.file:hover {
    border-color: var(--primary);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(79, 140, 255, 0.12);
}

.file.folder {
    border-color: #3a4060;
}

.file .icon {
    font-size: 36px;
    line-height: 1;
    margin-bottom: 4px;
}

.file .name {
    font-size: 13px;
    font-weight: 500;
    word-break: break-all;
    max-width: 100%;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.file .meta {
    font-size: 11px;
    color: var(--text-muted);
}

.file .actions {
    display: flex;
    flex-wrap: wrap;
    gap: 4px;
    justify-content: center;
    margin-top: 6px;
    opacity: 0;
    transition: opacity 0.15s;
}

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

.empty-state {
    grid-column: 1 / -1;
    text-align: center;
    padding: 60px 20px;
    color: var(--text-muted);
}

.empty-icon {
    font-size: 48px;
    margin-bottom: 12px;
    opacity: 0.6;
}

.empty-state .hint {
    font-size: 13px;
    margin-top: 6px;
}

/* Footer */
footer {
    padding: 8px 16px;
    background: var(--surface2);
    border-top: 1px solid var(--border);
    font-size: 12px;
    color: var(--text-muted);
    display: flex;
    gap: 8px;
    align-items: center;
}

footer a {
    color: var(--primary);
    text-decoration: none;
}

/* Upload progress panel */
.upload-panel {
    position: absolute;
    bottom: 48px;
    right: 20px;
    width: 320px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 12px;
    box-shadow: var(--shadow);
    z-index: 50;
    overflow: hidden;
}

.upload-panel.hidden {
    display: none;
}

.upload-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 14px;
    background: var(--surface2);
    border-bottom: 1px solid var(--border);
    font-size: 13px;
}

.upload-item {
    padding: 10px 14px;
    border-bottom: 1px solid var(--border);
}

.upload-item:last-child {
    border-bottom: none;
}

.upload-name {
    font-size: 12px;
    font-weight: 500;
    margin-bottom: 6px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.upload-progress {
    display: flex;
    align-items: center;
    gap: 8px;
}

.upload-progress .bar {
    flex: 1;
    height: 6px;
    background: var(--border);
    border-radius: 3px;
    overflow: hidden;
}

.upload-progress .fill {
    height: 100%;
    background: linear-gradient(90deg, var(--primary), #7b5cff);
    border-radius: 3px;
    transition: width 0.15s ease;
}

.upload-progress .pct {
    font-size: 11px;
    color: var(--text-muted);
    min-width: 32px;
    text-align: right;
}

.upload-status {
    font-size: 11px;
    color: var(--text-muted);
    margin-top: 4px;
}

.upload-status.ok {
    color: var(--success);
}

.upload-status.err {
    color: var(--danger);
}

/* Modals */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.55);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 100;
    backdrop-filter: blur(4px);
}

.modal-overlay.hidden {
    display: none;
}

.modal {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 14px;
    width: 90%;
    max-width: 400px;
    box-shadow: var(--shadow);
    overflow: hidden;
}

.modal.hidden {
    display: none;
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 14px 18px;
    background: var(--surface2);
    border-bottom: 1px solid var(--border);
}

.modal-header h3 {
    font-size: 15px;
    font-weight: 600;
}

.modal-body {
    padding: 18px;
}

.modal-body label {
    display: block;
    font-size: 12px;
    color: var(--text-muted);
    margin-bottom: 6px;
}

.modal-body .form-input {
    width: 100%;
    margin-bottom: 4px;
}

.modal-body p {
    font-size: 14px;
    margin-bottom: 8px;
}

.modal-body .warning {
    color: var(--warning);
    font-size: 12px;
}

.info-row {
    display: flex;
    justify-content: space-between;
    padding: 8px 0;
    border-bottom: 1px solid var(--border);
    font-size: 13px;
}

.info-row:last-child {
    border-bottom: none;
}

.info-row span {
    color: var(--text-muted);
}

.info-row.hidden {
    display: none;
}

.modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: 8px;
    padding: 12px 18px;
    background: var(--surface2);
    border-top: 1px solid var(--border);
}

/* Toast */
.toast {
    position: fixed;
    bottom: 28px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--surface2);
    color: var(--text);
    padding: 10px 20px;
    border-radius: 8px;
    border: 1px solid var(--border);
    font-size: 13px;
    z-index: 200;
    box-shadow: var(--shadow);
    animation: slideUp 0.25s ease;
}

.toast.success {
    border-color: var(--success);
}

.toast.error {
    border-color: var(--danger);
}

.toast.hidden {
    display: none;
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateX(-50%) translateY(12px);
    }
    to {
        opacity: 1;
        transform: translateX(-50%) translateY(0);
    }
}

/* Responsive */
@media (max-width: 700px) {
    body {
        padding: 0;
    }
    .window {
        height: 100vh;
        max-height: none;
        border-radius: 0;
    }
    .sidebar {
        display: none;
    }
    .file-grid {
        grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    }
    .file .actions {
        opacity: 1;
    }
}