/* ============================================================
   MiniFTP — File Manager Styles
   ============================================================ */

/* ---------- Reset & Base ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
    --color-bg:       #f4f6f9;
    --color-surface:  #ffffff;
    --color-primary:  #2563eb;
    --color-primary-h:#1d4ed8;
    --color-primary-l:#dbeafe;
    --color-danger:   #dc2626;
    --color-danger-h: #b91c1c;
    --color-secondary:#6b7280;
    --color-border:   #e5e7eb;
    --color-text:     #1f2937;
    --color-text-mute:#6b7280;
    --radius:         6px;
    --radius-lg:      10px;
    --shadow:         0 1px 3px rgba(0,0,0,.08);
    --shadow-lg:      0 8px 30px rgba(0,0,0,.15);
    --navbar-h:       52px;
    --toolbar-h:      46px;
    --status-h:       28px;
    --transition:     .18s ease;
}

html, body { height: 100%; }
body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    background: var(--color-bg);
    color: var(--color-text);
    font-size: 14px;
    line-height: 1.5;
    overflow: hidden;
}

/* ---------- Buttons ---------- */
.btn {
    display: inline-flex; align-items: center; gap: 6px;
    padding: 6px 14px; border: 1px solid var(--color-border);
    border-radius: var(--radius); background: var(--color-surface);
    color: var(--color-text); font-size: 13px; cursor: pointer;
    transition: background var(--transition), border-color var(--transition), box-shadow var(--transition);
    white-space: nowrap;
}
.btn:hover { background: #f0f0f0; }
.btn:focus-visible { outline: 2px solid var(--color-primary); outline-offset: 2px; }
.btn:disabled { opacity: .5; cursor: default; }
.btn-sm { padding: 4px 10px; font-size: 12px; }
.btn-primary { background: var(--color-primary); color: #fff; border-color: var(--color-primary); }
.btn-primary:hover { background: var(--color-primary-h); }
.btn-secondary { background: var(--color-secondary); color: #fff; border-color: var(--color-secondary); }
.btn-secondary:hover { background: #555; }
.btn-danger { background: var(--color-danger); color: #fff; border-color: var(--color-danger); }
.btn-danger:hover { background: var(--color-danger-h); }
.btn-block { display: block; width: 100%; text-align: center; }

.btn-icon {
    background: none; border: none; padding: 5px 7px; font-size: 14px;
    color: var(--color-secondary); cursor: pointer; border-radius: var(--radius);
    transition: background var(--transition), color var(--transition);
}
.btn-icon:hover { background: var(--color-primary-l); color: var(--color-primary); }
.btn-icon.danger:hover { background: #fef2f2; color: var(--color-danger); }

.upload-label { cursor: pointer; }

/* ---------- Login ---------- */
.login-body {
    display: flex; justify-content: center; align-items: center;
    min-height: 100vh; overflow: auto;
    background: linear-gradient(135deg, #1e3a5f 0%, #2563eb 100%);
}
.login-container {
    background: var(--color-surface); padding: 40px;
    border-radius: 12px; box-shadow: 0 8px 30px rgba(0,0,0,.2);
    width: 360px; max-width: 90%;
}
.login-header { text-align: center; margin-bottom: 28px; }
.login-header h1 { font-size: 28px; color: var(--color-primary); }
.login-header p { color: var(--color-text-mute); margin-top: 4px; }

.form-group { margin-bottom: 18px; }
.form-group label { display: block; font-weight: 600; margin-bottom: 6px; font-size: 13px; }
.form-group input {
    width: 100%; padding: 10px 12px; border: 1px solid var(--color-border);
    border-radius: var(--radius); font-size: 14px; transition: border-color var(--transition), box-shadow var(--transition);
}
.form-group input:focus { outline: none; border-color: var(--color-primary); box-shadow: 0 0 0 3px rgba(37,99,235,.15); }

.error-message { color: var(--color-danger); font-size: 13px; margin-bottom: 12px; }

/* ---------- Navbar ---------- */
.navbar {
    display: flex; justify-content: space-between; align-items: center;
    height: var(--navbar-h); padding: 0 20px;
    background: var(--color-surface); border-bottom: 1px solid var(--color-border);
    box-shadow: var(--shadow); position: relative; z-index: 10;
}
.navbar-brand { font-size: 18px; font-weight: 700; color: var(--color-primary); }
.navbar-brand i { margin-right: 6px; }
.navbar-client { font-weight: 400; font-size: 14px; color: var(--color-text-mute); margin-left: 4px; }
.navbar-actions { display: flex; align-items: center; gap: 12px; }
.navbar-user { color: var(--color-text-mute); font-size: 13px; }

/* ---------- Toolbar ---------- */
.toolbar {
    display: flex; justify-content: space-between; align-items: center;
    height: var(--toolbar-h); padding: 0 20px;
    background: var(--color-surface); border-bottom: 1px solid var(--color-border);
}
.toolbar-left, .toolbar-right { display: flex; align-items: center; gap: 8px; }
.breadcrumb { font-size: 13px; color: var(--color-text-mute); font-family: "Cascadia Code", "Fira Code", Consolas, monospace; }

/* ============================================================
   SPLIT PANEL LAYOUT
   ============================================================ */
.main-split {
    display: flex;
    height: calc(100vh - var(--navbar-h) - var(--toolbar-h) - var(--status-h));
    overflow: hidden;
}

/* --- Left panel: file list --- */
.panel-files {
    flex: 1 1 60%;
    min-width: 320px;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    background: var(--color-bg);
}

.panel-header {
    display: flex; justify-content: space-between; align-items: center;
    padding: 8px 16px; font-size: 12px; color: var(--color-text-mute);
    background: var(--color-surface); border-bottom: 1px solid var(--color-border);
}
.sort-controls { display: flex; gap: 2px; }
.btn-sort.active { color: var(--color-primary); }

/* --- Drag-drop zone inside file panel --- */
.drop-zone {
    margin: 12px 16px; padding: 18px;
    border: 2px dashed var(--color-border); border-radius: var(--radius-lg);
    text-align: center; color: var(--color-text-mute);
    transition: border-color var(--transition), background var(--transition);
}
.drop-zone i { font-size: 28px; margin-bottom: 6px; display: block; }
.drop-zone p { font-weight: 600; font-size: 13px; }
.drop-zone span { font-size: 11px; }
.drop-zone.drag-over {
    border-color: var(--color-primary); background: var(--color-primary-l);
    color: var(--color-primary);
}

/* --- File table --- */
.panel-files .file-table-wrap {
    flex: 1; overflow-y: auto; padding: 0 16px 16px;
}
.file-table { width: 100%; border-collapse: collapse; background: var(--color-surface);
    border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); }
.file-table th {
    position: sticky; top: 0; z-index: 2;
    background: #f9fafb; font-size: 11px; font-weight: 600; text-transform: uppercase;
    letter-spacing: .04em; color: var(--color-text-mute);
    padding: 8px 12px; text-align: left; border-bottom: 1px solid var(--color-border);
}
.file-table td { padding: 7px 12px; border-bottom: 1px solid var(--color-border); font-size: 13px; }
.file-table tbody tr { transition: background var(--transition); }
.file-table tbody tr:hover { background: #f0f4ff; }
.file-table tbody tr.folder-row { cursor: pointer; }
.file-table tbody tr.selected { background: var(--color-primary-l); }
.file-table .col-name a { color: var(--color-text); text-decoration: none; }
.file-table .col-name a:hover { color: var(--color-primary); text-decoration: underline; }

.col-icon { width: 36px; text-align: center; }
.col-name { min-width: 160px; }
.col-size { width: 80px; color: var(--color-text-mute); }
.col-modified { width: 140px; color: var(--color-text-mute); }
.col-actions { width: 100px; text-align: right; white-space: nowrap; }

.file-icon { font-size: 16px; }
.file-icon.folder { color: #f59e0b; }
.file-icon.image { color: #10b981; }
.file-icon.file { color: var(--color-secondary); }

.loading, .empty-state { text-align: center; padding: 40px; color: var(--color-text-mute); }

/* --- Resizer handle --- */
.panel-resizer {
    width: 5px; cursor: col-resize;
    background: var(--color-border);
    transition: background var(--transition);
    flex-shrink: 0;
}
.panel-resizer:hover, .panel-resizer.active { background: var(--color-primary); }

/* --- Right panel: preview --- */
.panel-preview {
    flex: 0 0 35%;
    min-width: 260px;
    max-width: 60%;
    display: flex;
    flex-direction: column;
    background: var(--color-surface);
    border-left: 1px solid var(--color-border);
    overflow: hidden;
}

.preview-empty {
    flex: 1; display: flex; flex-direction: column;
    justify-content: center; align-items: center;
    color: var(--color-border); gap: 12px;
}
.preview-empty i { font-size: 48px; }
.preview-empty p { font-size: 14px; color: var(--color-text-mute); }

.preview-content { flex: 1; display: flex; flex-direction: column; overflow: hidden; }

.preview-toolbar {
    display: flex; justify-content: space-between; align-items: center;
    padding: 10px 16px; border-bottom: 1px solid var(--color-border);
    background: #f9fafb;
}
.preview-filename {
    font-weight: 600; font-size: 13px;
    overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
    max-width: 55%;
}
.preview-actions { display: flex; gap: 6px; }

.preview-body {
    flex: 1; overflow: auto; display: flex;
    justify-content: center; align-items: flex-start;
    padding: 16px; background: #fafbfc;
}
.preview-body img {
    max-width: 100%; max-height: 100%;
    border-radius: var(--radius); box-shadow: var(--shadow);
    object-fit: contain;
}
.preview-body pre {
    width: 100%; white-space: pre-wrap; word-break: break-word;
    font-family: "Cascadia Code", "Fira Code", Consolas, monospace;
    font-size: 12px; line-height: 1.6; padding: 8px;
    background: #f4f6f9; border-radius: var(--radius);
}
.preview-body .preview-icon-large {
    display: flex; flex-direction: column; justify-content: center;
    align-items: center; height: 100%; color: var(--color-border); gap: 12px;
}
.preview-body .preview-icon-large i { font-size: 56px; }
.preview-body .preview-icon-large span { font-size: 13px; color: var(--color-text-mute); }

.preview-meta {
    padding: 10px 16px; border-top: 1px solid var(--color-border);
    font-size: 12px; color: var(--color-text-mute);
    display: flex; gap: 18px; flex-wrap: wrap; background: #f9fafb;
}
.preview-meta strong { color: var(--color-text); }

/* ============================================================
   MODALS
   ============================================================ */
.modal {
    position: fixed; inset: 0; z-index: 3000;
    display: flex; justify-content: center; align-items: center;
}
.modal-backdrop { position: absolute; inset: 0; background: rgba(0,0,0,.45); }
.modal-dialog {
    position: relative; width: 400px; max-width: 92%;
    background: var(--color-surface); border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg); overflow: hidden;
    animation: modalIn .2s ease;
}
@keyframes modalIn {
    from { opacity: 0; transform: translateY(-12px); }
    to   { opacity: 1; transform: translateY(0); }
}
.modal-header {
    display: flex; justify-content: space-between; align-items: center;
    padding: 14px 20px; border-bottom: 1px solid var(--color-border);
}
.modal-header h3 { font-size: 15px; }
.modal-close {
    background: none; border: none; font-size: 20px;
    color: var(--color-text-mute); cursor: pointer; line-height: 1;
}
.modal-close:hover { color: var(--color-danger); }
.modal-body { padding: 20px; }
.modal-body .form-group { margin-bottom: 0; }
.modal-input {
    width: 100%; padding: 10px 12px; border: 1px solid var(--color-border);
    border-radius: var(--radius); font-size: 14px;
}
.modal-input:focus { outline: none; border-color: var(--color-primary); box-shadow: 0 0 0 3px rgba(37,99,235,.15); }
.modal-footer {
    display: flex; justify-content: flex-end; gap: 8px;
    padding: 12px 20px; border-top: 1px solid var(--color-border); background: #f9fafb;
}

/* ============================================================
   DROP OVERLAY (full screen)
   ============================================================ */
.drop-overlay {
    position: fixed; inset: 0; z-index: 5000;
    background: rgba(37,99,235,.88);
    display: flex; justify-content: center; align-items: center;
}
.drop-overlay-content { text-align: center; color: #fff; }
.drop-overlay-content i { font-size: 56px; margin-bottom: 12px; }
.drop-overlay-content p { font-size: 18px; font-weight: 600; }

/* ---------- Status Bar ---------- */
.status-bar {
    position: fixed; bottom: 0; left: 0; right: 0;
    height: var(--status-h); line-height: var(--status-h);
    padding: 0 20px; background: #1f2937; color: #d1d5db; font-size: 12px; z-index: 5;
}

/* ============================================================
   TOAST NOTIFICATIONS
   ============================================================ */
.toast-container {
    position: fixed; top: 16px; right: 16px; z-index: 6000;
    display: flex; flex-direction: column; gap: 8px;
    pointer-events: none; max-width: 380px;
}
.toast {
    display: flex; align-items: flex-start; gap: 10px;
    padding: 12px 16px; border-radius: var(--radius);
    background: var(--color-surface); box-shadow: var(--shadow-lg);
    font-size: 13px; line-height: 1.45;
    pointer-events: auto;
    animation: toastIn .25s ease;
    border-left: 4px solid var(--color-secondary);
}
.toast.toast-success { border-left-color: #16a34a; }
.toast.toast-error   { border-left-color: var(--color-danger); }
.toast.toast-info    { border-left-color: var(--color-primary); }
.toast-icon { font-size: 16px; flex-shrink: 0; margin-top: 1px; }
.toast-success .toast-icon { color: #16a34a; }
.toast-error   .toast-icon { color: var(--color-danger); }
.toast-info    .toast-icon { color: var(--color-primary); }
.toast-body   { flex: 1; }
.toast-close  {
    background: none; border: none; font-size: 15px;
    color: var(--color-text-mute); cursor: pointer; padding: 0 0 0 8px; line-height: 1;
    flex-shrink: 0;
}
.toast-close:hover { color: var(--color-text); }
.toast.removing { animation: toastOut .2s ease forwards; }
@keyframes toastIn  { from { opacity: 0; transform: translateX(30px); } to { opacity: 1; transform: translateX(0); } }
@keyframes toastOut { from { opacity: 1; transform: translateX(0); } to { opacity: 0; transform: translateX(30px); } }

/* ============================================================
   UPLOAD PROGRESS BAR
   ============================================================ */
.upload-progress {
    position: fixed; bottom: var(--status-h); left: 0; right: 0;
    z-index: 4500; background: var(--color-surface);
    border-top: 1px solid var(--color-border); box-shadow: 0 -2px 8px rgba(0,0,0,.08);
}
.upload-progress-inner { padding: 10px 20px; }
.upload-progress-info {
    display: flex; justify-content: space-between; font-size: 12px;
    color: var(--color-text-mute); margin-bottom: 6px;
}
.upload-progress-info strong { color: var(--color-text); }
.upload-progress-track {
    height: 6px; background: var(--color-border); border-radius: 3px; overflow: hidden;
}
.upload-progress-bar {
    height: 100%; width: 0; background: var(--color-primary);
    border-radius: 3px; transition: width .15s ease;
}

/* ---------- Responsive ---------- */
@media (max-width: 768px) {
    .main-split { flex-direction: column; }
    .panel-files { min-width: 0; flex: 1; }
    .panel-resizer { width: 100%; height: 5px; cursor: row-resize; }
    .panel-preview { flex: 0 0 40%; min-width: 0; max-width: none; border-left: none; border-top: 1px solid var(--color-border); }
    .col-modified { display: none; }
}