/* gossh — MFF dark theme, green-on-black terminal aesthetic */

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

:root {
  --bg-main:      #0d1117;
  --bg-sidebar:   #161b22;
  --bg-panel:     #1c2128;
  --bg-tab:       #21262d;
  --bg-tab-active:#2d333b;
  --bg-input:     #0d1117;
  --border:       #30363d;
  --green:        #3fb950;
  --green-dim:    #238636;
  --text:         #c9d1d9;
  --text-dim:     #8b949e;
  --text-header:  #f0f6fc;
  --red:          #f85149;
  --yellow:       #e3b341;
  --blue:         #58a6ff;
  --purple:       #bc8cff;
  --font-mono:    'Consolas', 'Cascadia Code', 'JetBrains Mono', 'Fira Code', monospace;
  --font-ui:      -apple-system, 'Segoe UI', Roboto, sans-serif;
  --sidebar-w:    260px;
  --tab-h:        38px;
  --toolbar-h:    48px;
  --transition:   0.15s ease;
}

/* Light theme */
body.light-theme {
  --bg-main:      #f6f8fa;
  --bg-sidebar:   #ffffff;
  --bg-panel:     #f6f8fa;
  --bg-tab:       #eaeef2;
  --bg-tab-active:#d0d7de;
  --bg-input:     #ffffff;
  --border:       #d0d7de;
  --text:         #24292f;
  --text-dim:     #57606a;
  --text-header:  #1f2328;
}

html, body { height: 100%; overflow: hidden; }

body {
  background: var(--bg-main);
  color: var(--text);
  font-family: var(--font-ui);
  font-size: 14px;
  display: flex;
  flex-direction: column;
}

/* ─── Toolbar ─── */
#toolbar {
  height: var(--toolbar-h);
  background: var(--bg-sidebar);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  padding: 0 12px;
  gap: 10px;
  flex-shrink: 0;
  z-index: 100;
}
#btn-hamburger {
  background: none; border: none; cursor: pointer;
  color: var(--text); font-size: 20px; padding: 4px 8px;
  border-radius: 6px; line-height: 1;
}
#btn-hamburger:hover { background: var(--bg-tab); }
#logo { color: var(--green); font-weight: 700; font-size: 16px; letter-spacing: 1px; }
#toolbar-right { margin-left: auto; display: flex; align-items: center; gap: 8px; }
.tb-btn {
  background: var(--bg-tab); border: 1px solid var(--border);
  color: var(--text); border-radius: 6px; padding: 5px 12px;
  cursor: pointer; font-size: 13px; transition: var(--transition);
}
.tb-btn:hover { background: var(--bg-tab-active); color: var(--text-header); }
.tb-btn.active { background: var(--green-dim); border-color: var(--green); color: #fff; }
#username-badge { color: var(--text-dim); font-size: 12px; }

/* ─── Main layout ─── */
#main-layout {
  display: flex;
  flex: 1;
  overflow: hidden;
}

/* ─── Sidebar ─── */
#sidebar {
  width: var(--sidebar-w);
  background: var(--bg-sidebar);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
  transition: width var(--transition), opacity var(--transition);
  overflow: hidden;
}
#sidebar.collapsed { width: 0; opacity: 0; }

#sidebar-search {
  padding: 10px;
  border-bottom: 1px solid var(--border);
}
#search-input {
  width: 100%;
  background: var(--bg-input);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 6px;
  padding: 6px 10px;
  font-size: 13px;
  outline: none;
}
#search-input:focus { border-color: var(--blue); }

#server-list {
  flex: 1;
  overflow-y: auto;
  padding: 6px 0;
}
#server-list::-webkit-scrollbar { width: 5px; }
#server-list::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }

.group-header {
  display: flex; align-items: center; gap: 6px;
  padding: 6px 10px;
  cursor: pointer;
  color: var(--text-dim);
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  user-select: none;
}
.group-header:hover { color: var(--text); }
.group-chevron { transition: transform var(--transition); font-size: 10px; }
.group-header.collapsed .group-chevron { transform: rotate(-90deg); }
.group-servers { padding-left: 10px; }
.group-header.collapsed + .group-servers { display: none; }

.server-item {
  display: flex; align-items: center; gap: 8px;
  padding: 6px 14px;
  cursor: pointer;
  border-radius: 6px;
  margin: 1px 6px;
  color: var(--text);
  font-size: 13px;
  transition: var(--transition);
}
.server-item:hover { background: var(--bg-tab); }
.server-item.active { background: var(--bg-tab-active); color: var(--text-header); }
.server-icon { color: var(--green); font-size: 12px; }
.server-name { flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.server-actions { display: none; gap: 4px; }
.server-item:hover .server-actions { display: flex; }
.server-action-btn {
  background: none; border: none; cursor: pointer;
  color: var(--text-dim); font-size: 12px; padding: 2px 4px;
  border-radius: 3px;
}
.server-action-btn:hover { color: var(--text); background: var(--border); }

#sidebar-footer {
  padding: 10px;
  border-top: 1px solid var(--border);
  display: flex;
  gap: 6px;
}
.sidebar-btn {
  flex: 1;
  background: var(--bg-tab);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 6px;
  padding: 6px;
  cursor: pointer;
  font-size: 12px;
  text-align: center;
  transition: var(--transition);
}
.sidebar-btn:hover { background: var(--bg-tab-active); }

/* ─── Content area ─── */
#content {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

/* ─── Tab bar ─── */
#tab-bar {
  height: var(--tab-h);
  background: var(--bg-tab);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  overflow-x: auto;
  flex-shrink: 0;
  padding: 0 4px;
  gap: 2px;
}
#tab-bar::-webkit-scrollbar { height: 3px; }
#tab-bar::-webkit-scrollbar-thumb { background: var(--border); }

.tab {
  display: flex; align-items: center; gap: 6px;
  padding: 5px 12px;
  cursor: pointer;
  border-radius: 6px 6px 0 0;
  white-space: nowrap;
  font-size: 13px;
  color: var(--text-dim);
  border: 1px solid transparent;
  border-bottom: none;
  transition: var(--transition);
  min-width: 100px; max-width: 200px;
}
.tab:hover { color: var(--text); background: var(--bg-tab-active); }
.tab.active {
  color: var(--text-header); background: var(--bg-main);
  border-color: var(--border);
}
.tab-title { overflow: hidden; text-overflow: ellipsis; flex: 1; }
.tab-close {
  background: none; border: none; cursor: pointer;
  color: var(--text-dim); font-size: 14px; padding: 0 2px;
  border-radius: 3px; line-height: 1;
}
.tab-close:hover { color: var(--red); background: rgba(248,81,73,0.1); }

#tab-bar-right {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 6px;
  padding-right: 4px;
  flex-shrink: 0;
}

.layout-btn {
  background: none; border: 1px solid var(--border);
  color: var(--text-dim); font-size: 11px;
  padding: 3px 7px; border-radius: 4px;
  cursor: pointer;
}
.layout-btn:hover, .layout-btn.active {
  background: var(--bg-tab-active); color: var(--text);
}

/* ─── Terminal area ─── */
#terminal-area {
  flex: 1;
  overflow: hidden;
  display: grid;
  gap: 2px;
  padding: 2px;
  background: #000;
}

.terminal-tile {
  position: relative;
  background: #000;
  border: 1px solid var(--border);
  border-radius: 4px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}
.terminal-tile.active-tile { border-color: var(--green); }

.tile-header {
  display: flex; align-items: center;
  padding: 4px 8px;
  background: rgba(22, 27, 34, 0.95);
  border-bottom: 1px solid var(--border);
  font-size: 12px;
  color: var(--text-dim);
  gap: 8px;
  flex-shrink: 0;
}
.tile-title { flex: 1; color: var(--green); font-family: var(--font-mono); }
.tile-btn {
  background: none; border: none; cursor: pointer;
  color: var(--text-dim); font-size: 13px;
  padding: 2px 4px; border-radius: 3px;
}
.tile-btn:hover { color: var(--text); }
.tile-btn.reconnect { color: var(--yellow); }
.tile-btn.disconnect { color: var(--red); }
.tile-btn.maximize { color: var(--text-dim); }

.terminal-tile.maximized {
  position: fixed !important;
  top: 0; left: 0;
  width: 100vw !important;
  height: 100vh !important;
  z-index: 999;
  border-radius: 0;
  border-color: var(--green);
}

.xterm-wrapper {
  flex: 1;
  min-height: 0;        /* required: flex children won't shrink without this */
  overflow: hidden;
  padding: 4px;
  position: relative;
}
.xterm            { height: 100% !important; }
.xterm-viewport   { height: 100% !important; overflow-y: auto !important; }
.xterm-screen     { height: 100% !important; }

/* ─── Broadcast bar ─── */
#broadcast-bar {
  display: none;
  background: var(--bg-panel);
  border-top: 1px solid var(--green-dim);
  padding: 8px 12px;
  gap: 8px;
  align-items: center;
}
#broadcast-bar.visible { display: flex; }
#broadcast-input {
  flex: 1;
  background: var(--bg-input);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 6px;
  padding: 7px 12px;
  font-family: var(--font-mono);
  font-size: 13px;
  outline: none;
}
#broadcast-input:focus { border-color: var(--green); }
#btn-broadcast-send {
  background: var(--green-dim);
  border: none; color: #fff;
  border-radius: 6px; padding: 7px 16px;
  cursor: pointer; font-weight: 600;
}
#btn-broadcast-send:hover { background: var(--green); }
#broadcast-label { color: var(--green); font-size: 12px; font-weight: 600; }

/* ─── SFTP panel ─── */
#sftp-panel {
  width: 360px;
  background: var(--bg-sidebar);
  border-left: 1px solid var(--border);
  display: none;
  flex-direction: column;
  flex-shrink: 0;
}
#sftp-panel.visible { display: flex; }

#sftp-header {
  padding: 10px 14px;
  border-bottom: 1px solid var(--border);
  display: flex; align-items: center; gap: 8px;
}
#sftp-title { font-weight: 600; color: var(--text-header); flex: 1; }
#sftp-path-bar {
  padding: 6px 10px;
  background: var(--bg-input);
  border-bottom: 1px solid var(--border);
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-dim);
  display: flex; align-items: center; gap: 6px;
}
#sftp-path-input {
  flex: 1; background: none; border: none;
  color: var(--text); outline: none;
  font-family: var(--font-mono); font-size: 12px;
}
#sftp-list {
  flex: 1; overflow-y: auto;
  padding: 4px 0;
}
.sftp-item {
  display: flex; align-items: center; gap: 8px;
  padding: 5px 12px;
  cursor: pointer;
  font-size: 13px;
}
.sftp-item:hover { background: var(--bg-tab); }
.sftp-item-icon { color: var(--blue); width: 16px; text-align: center; }
.sftp-item-icon.dir { color: var(--yellow); }
.sftp-item-name { flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.sftp-item-size { color: var(--text-dim); font-size: 11px; }
.sftp-item-actions { display: none; gap: 4px; }
.sftp-item:hover .sftp-item-actions { display: flex; }
.sftp-action {
  background: none; border: none; cursor: pointer;
  color: var(--text-dim); font-size: 12px; padding: 2px;
}
.sftp-action:hover { color: var(--text); }
#sftp-toolbar {
  padding: 8px 10px;
  border-top: 1px solid var(--border);
  display: flex; gap: 6px;
}
.sftp-tb-btn {
  background: var(--bg-tab); border: 1px solid var(--border);
  color: var(--text); border-radius: 6px; padding: 5px 10px;
  cursor: pointer; font-size: 12px;
}
.sftp-tb-btn:hover { background: var(--bg-tab-active); }

/* ─── Modals ─── */
.modal-overlay {
  position: fixed; inset: 0;
  background: rgba(0,0,0,0.7);
  display: flex; align-items: center; justify-content: center;
  z-index: 1000;
  display: none;
}
.modal-overlay.visible { display: flex; }
.modal {
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: 10px;
  width: 520px;
  max-width: 95vw;
  max-height: 90vh;
  display: flex;
  flex-direction: column;
}
.modal-header {
  padding: 16px 20px;
  border-bottom: 1px solid var(--border);
  display: flex; align-items: center;
}
.modal-title { font-weight: 600; color: var(--text-header); font-size: 15px; flex: 1; }
.modal-close {
  background: none; border: none; cursor: pointer;
  color: var(--text-dim); font-size: 20px;
}
.modal-close:hover { color: var(--text); }
.modal-body { padding: 20px; overflow-y: auto; flex: 1; }
.modal-footer {
  padding: 12px 20px;
  border-top: 1px solid var(--border);
  display: flex; justify-content: flex-end; gap: 8px;
}

/* Forms */
.form-group { margin-bottom: 14px; }
.form-label {
  display: block;
  margin-bottom: 5px;
  font-size: 13px;
  color: var(--text-dim);
  font-weight: 500;
}
.form-control {
  width: 100%;
  background: var(--bg-input);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 6px;
  padding: 8px 12px;
  font-size: 13px;
  outline: none;
  font-family: var(--font-ui);
}
.form-control:focus { border-color: var(--blue); }
.form-control.mono { font-family: var(--font-mono); }
select.form-control option { background: var(--bg-panel); }
textarea.form-control { resize: vertical; min-height: 80px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.form-hint { font-size: 11px; color: var(--text-dim); margin-top: 3px; }

/* Buttons */
.btn {
  padding: 7px 16px;
  border-radius: 6px;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  border: 1px solid transparent;
  transition: var(--transition);
}
.btn-primary { background: var(--green-dim); color: #fff; border-color: var(--green-dim); }
.btn-primary:hover { background: var(--green); border-color: var(--green); }
.btn-secondary { background: var(--bg-tab); color: var(--text); border-color: var(--border); }
.btn-secondary:hover { background: var(--bg-tab-active); }
.btn-danger { background: rgba(248,81,73,0.1); color: var(--red); border-color: var(--red); }
.btn-danger:hover { background: rgba(248,81,73,0.2); }

/* Tabs in modals */
.modal-tabs { display: flex; gap: 0; border-bottom: 1px solid var(--border); margin: -20px -20px 20px; }
.modal-tab {
  padding: 10px 16px; cursor: pointer;
  font-size: 13px; color: var(--text-dim);
  border-bottom: 2px solid transparent;
  transition: var(--transition);
}
.modal-tab:hover { color: var(--text); }
.modal-tab.active { color: var(--green); border-bottom-color: var(--green); }

/* Tables */
.data-table { width: 100%; border-collapse: collapse; font-size: 13px; }
.data-table th {
  padding: 8px 12px;
  text-align: left;
  color: var(--text-dim);
  font-weight: 600;
  border-bottom: 1px solid var(--border);
}
.data-table td { padding: 8px 12px; border-bottom: 1px solid var(--border); }
.data-table tr:hover td { background: var(--bg-tab); }

/* Toasts */
#toast-container {
  position: fixed; bottom: 20px; right: 20px;
  z-index: 9999; display: flex; flex-direction: column; gap: 8px;
}
.toast {
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 10px 16px;
  color: var(--text);
  font-size: 13px;
  box-shadow: 0 4px 12px rgba(0,0,0,0.4);
  animation: slideIn 0.2s ease;
  max-width: 300px;
}
.toast.success { border-left: 3px solid var(--green); }
.toast.error   { border-left: 3px solid var(--red); }
.toast.info    { border-left: 3px solid var(--blue); }
@keyframes slideIn { from { transform: translateX(20px); opacity: 0; } to { transform: none; opacity: 1; } }

/* VNC panel */
#vnc-panel {
  position: absolute; inset: 0;
  background: #000;
  display: none;
  flex-direction: column;
  z-index: 10;
}
#vnc-panel.visible { display: flex; }
#vnc-canvas-area { flex: 1; display: flex; align-items: center; justify-content: center; }
#vnc-status { padding: 8px 12px; background: var(--bg-panel); font-size: 12px; color: var(--text-dim); }

/* Scrollbars global */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }

/* Login page */
#login-page {
  display: flex; align-items: center; justify-content: center;
  min-height: 100vh;
  background: var(--bg-main);
}
.login-box {
  background: var(--bg-sidebar);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 40px;
  width: 360px;
}
.login-logo {
  text-align: center;
  margin-bottom: 24px;
}
.login-logo span {
  font-size: 28px;
  font-weight: 700;
  color: var(--green);
  letter-spacing: 2px;
}
.login-sub { color: var(--text-dim); font-size: 13px; text-align: center; margin-top: 4px; }
.login-error {
  background: rgba(248,81,73,0.1);
  border: 1px solid var(--red);
  color: var(--red);
  border-radius: 6px;
  padding: 8px 12px;
  font-size: 13px;
  margin-bottom: 14px;
  display: none;
}
.login-error.visible { display: block; }
#btn-login {
  width: 100%;
  margin-top: 4px;
  padding: 10px;
  font-size: 14px;
}

/* Responsive */
@media (max-width: 768px) {
  :root { --sidebar-w: 240px; }
  .form-row { grid-template-columns: 1fr; }
  #sftp-panel { width: 100%; position: absolute; right: 0; top: 0; bottom: 0; z-index: 50; }
}

/* Checkbox */
.form-check { display: flex; align-items: center; gap: 8px; margin-bottom: 10px; }
.form-check input[type=checkbox] { width: 16px; height: 16px; accent-color: var(--green); }

/* Badge */
.badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 10px;
  font-size: 11px;
  font-weight: 600;
}
.badge-green { background: rgba(63,185,80,0.15); color: var(--green); }
.badge-red   { background: rgba(248,81,73,0.15);  color: var(--red); }
.badge-blue  { background: rgba(88,166,255,0.15); color: var(--blue); }
.badge-yellow{ background: rgba(227,179,65,0.15); color: var(--yellow); }

/* Empty state */
.empty-state {
  text-align: center;
  padding: 40px 20px;
  color: var(--text-dim);
}
.empty-state-icon { font-size: 32px; margin-bottom: 10px; }
.empty-state p { font-size: 13px; }

/* Fix 2: error overlay on terminal tiles */
.tile-error-overlay {
  position: absolute;
  inset: 0;
  z-index: 10;
  background: rgba(13,17,23,0.92);
  color: #f85149;
  font-size: 13px;
  font-family: 'Cascadia Code', 'Fira Code', 'Consolas', monospace;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 24px;
  border: 1px solid #f85149;
  white-space: pre-wrap;
  pointer-events: none;
}

/* Feature 5 / Feature 7: sidebar sections and import UI */
.sidebar-section-label {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--text-dim);
  text-transform: uppercase;
  padding: 6px 10px 2px;
  user-select: none;
}

.sidebar-footer-row {
  display: flex;
  gap: 4px;
  padding: 4px 8px;
  align-items: center;
  flex-wrap: wrap;
}

.sidebar-import-wrap {
  position: relative;
}

.import-dropdown {
  position: absolute;
  bottom: 100%;
  left: 0;
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: 6px;
  min-width: 160px;
  z-index: 100;
  box-shadow: 0 4px 16px rgba(0,0,0,0.4);
  overflow: hidden;
}

.import-dropdown button {
  display: block;
  width: 100%;
  text-align: left;
  padding: 8px 12px;
  background: none;
  border: none;
  color: var(--text);
  font-size: 13px;
  cursor: pointer;
}
.import-dropdown button:hover {
  background: var(--bg3);
  color: var(--green);
}