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

:root {
  --bg: #0a0a0f;
  --bg-card: rgba(20, 20, 35, 0.6);
  --bg-card-hover: rgba(20, 20, 35, 0.85);
  --border: rgba(255, 255, 255, 0.08);
  --text: #e0e0e0;
  --text-muted: #888;
  --accent: #00d4ff;
  --accent-dim: rgba(0, 212, 255, 0.15);
  --danger: #ff4757;
  --success: #2ed573;
  --warning: #ffa502;
  --radius: 16px;
  --radius-sm: 10px;
}

html { font-size: 16px; }

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  background: var(--bg);
  background-image:
    radial-gradient(ellipse at 30% 0%, rgba(0, 212, 255, 0.04) 0%, transparent 50%),
    radial-gradient(ellipse at 70% 100%, rgba(0, 150, 255, 0.03) 0%, transparent 50%);
  color: var(--text);
  min-height: 100vh;
  line-height: 1.5;
}

/* ---- TOP BAR ---- */
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 32px;
  background: rgba(10, 10, 15, 0.8);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
}

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

.logo, .logo-link {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: -0.3px;
  text-decoration: none;
}

.logo-link:hover { color: #fff; }

.topbar-right { display: flex; gap: 8px; }

/* ---- BUTTONS ---- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 18px;
  font-size: 0.875rem;
  font-weight: 500;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: rgba(255,255,255,0.04);
  color: var(--text);
  cursor: pointer;
  text-decoration: none;
  transition: all 0.2s ease;
}

.btn:hover { background: rgba(255,255,255,0.08); border-color: rgba(255,255,255,0.15); }

.btn-primary {
  background: var(--accent);
  color: #0a0a0f;
  border-color: var(--accent);
  font-weight: 600;
}

.btn-primary:hover { background: #00b8e6; border-color: #00b8e6; }

.btn-ghost { border-color: transparent; background: transparent; }
.btn-ghost:hover { background: rgba(255,255,255,0.06); }

.btn-full { width: 100%; justify-content: center; }

.btn-sm { padding: 4px 12px; font-size: 0.8rem; }

.btn-danger { color: var(--danger); border-color: transparent; }
.btn-danger:hover { background: rgba(255, 71, 87, 0.1); }

/* ---- DASHBOARD ---- */
.dashboard {
  max-width: 1400px;
  margin: 0 auto;
  padding: 32px 24px;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 20px;
  margin-bottom: 24px;
}

/* ---- CARDS ---- */
.card {
  background: var(--bg-card);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
}

.card:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(0, 212, 255, 0.08);
  border-color: rgba(0, 212, 255, 0.2);
}

.card-header {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 18px 22px 0;
}

.card-emoji { font-size: 1.3rem; }

.card-title {
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.6px;
  color: var(--text-muted);
}

.card-badge {
  margin-left: auto;
  font-size: 0.8rem;
  background: var(--accent-dim);
  color: var(--accent);
  padding: 2px 10px;
  border-radius: 99px;
  font-weight: 600;
}

.card-body { padding: 16px 22px 22px; }

.stat-value { font-size: 2rem; font-weight: 700; color: #fff; }
.stat-sub { font-size: 0.8rem; color: var(--text-muted); margin-top: 2px; }

/* ---- BAR ---- */
.bar-bg {
  margin-top: 12px;
  height: 8px;
  background: rgba(255,255,255,0.06);
  border-radius: 99px;
  overflow: hidden;
}

.bar-fill {
  height: 100%;
  border-radius: 99px;
  transition: width 0.6s ease;
}

.cpu-bar { background: linear-gradient(90deg, var(--accent), #0090ff); }
.ram-bar { background: linear-gradient(90deg, #ff6b81, #ff4757); }
.disk-bar { background: linear-gradient(90deg, #ffa502, #ff6348); }

/* ---- LOAD AVG ---- */
.load-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  text-align: center;
}

.load-grid > div {
  background: rgba(255,255,255,0.03);
  border-radius: var(--radius-sm);
  padding: 10px 6px;
}

.load-label { display: block; font-size: 0.7rem; text-transform: uppercase; color: var(--text-muted); margin-bottom: 4px; }
.load-val { font-size: 1.3rem; font-weight: 700; color: #fff; }

/* ---- DOCKER ---- */
.docker-card { margin-bottom: 32px; }

.container-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 12px;
}

.container-item {
  background: rgba(255,255,255,0.03);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 14px 16px;
  transition: border-color 0.2s ease;
}

.container-item:hover { border-color: rgba(0, 212, 255, 0.25); }

.container-name {
  font-weight: 600;
  color: #fff;
  font-size: 0.95rem;
  margin-bottom: 6px;
}

.container-detail {
  font-size: 0.78rem;
  color: var(--text-muted);
  display: flex;
  flex-wrap: wrap;
  gap: 4px 6px;
}

.container-detail span {
  display: inline-flex;
  align-items: center;
  gap: 3px;
}

.status-badge {
  display: inline-block;
  padding: 1px 8px;
  border-radius: 99px;
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
}

.status-running { background: rgba(46, 213, 115, 0.15); color: var(--success); }
.status-exited, .status-stopped { background: rgba(255, 71, 87, 0.15); color: var(--danger); }
.status-created { background: rgba(255, 165, 2, 0.15); color: var(--warning); }

.container-placeholder, .panel-placeholder {
  color: var(--text-muted);
  font-size: 0.85rem;
  text-align: center;
  padding: 12px 0;
}

/* ---- PANEL LINKS ---- */
.panel-buttons { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 4px; }

.panel-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 14px;
  font-size: 0.82rem;
  font-weight: 500;
  border: 1px solid var(--accent);
  border-radius: 99px;
  background: var(--accent-dim);
  color: var(--accent);
  cursor: pointer;
  text-decoration: none;
  transition: all 0.2s ease;
}

.panel-btn:hover { background: rgba(0, 212, 255, 0.25); color: #fff; border-color: #fff; }

/* ---- SETTINGS ---- */
.settings-page { max-width: 900px; }

.settings-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

@media (max-width: 700px) {
  .settings-grid { grid-template-columns: 1fr; }
}

/* ---- FORMS ---- */
.form-group { margin-bottom: 14px; }

.form-group label {
  display: block;
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--text-muted);
  margin-bottom: 5px;
  text-transform: uppercase;
  letter-spacing: 0.4px;
}

.form-group input, .form-group select {
  width: 100%;
  padding: 10px 14px;
  font-size: 0.9rem;
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: #fff;
  outline: none;
  transition: border-color 0.2s ease;
}

.form-group input:focus { border-color: var(--accent); }

.form-row { display: flex; gap: 12px; }
.flex-grow { flex: 1; }

.msg, .login-msg {
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  margin-bottom: 12px;
  display: none;
}

.msg.error, .login-msg.error, .alert-error {
  display: block;
  background: rgba(255, 71, 87, 0.1);
  color: var(--danger);
  border: 1px solid rgba(255, 71, 87, 0.2);
}

.msg.success, .login-msg.success {
  display: block;
  background: rgba(46, 213, 115, 0.1);
  color: var(--success);
  border: 1px solid rgba(46, 213, 115, 0.2);
}

/* ---- PANEL LIST ---- */
.panel-list { margin-bottom: 8px; }

.panel-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 0;
  border-bottom: 1px solid var(--border);
  font-size: 0.85rem;
}

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

.divider { border: none; border-top: 1px solid var(--border); margin: 16px 0; }

/* ---- LOGIN PAGE ---- */
.login-page {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  padding: 24px;
}

.login-container { width: 100%; max-width: 400px; }

.login-card {
  background: var(--bg-card);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 40px 32px;
  text-align: center;
}

.login-icon { font-size: 2.5rem; margin-bottom: 12px; }

.login-card h1 {
  font-size: 1.6rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 4px;
}

.login-sub { font-size: 0.85rem; color: var(--text-muted); margin-bottom: 24px; }

.login-form { text-align: left; }

.login-form .form-group input {
  background: rgba(255,255,255,0.05);
}

.login-msg { margin-top: 16px; }

/* ---- TOAST ---- */
.toast {
  position: fixed;
  bottom: 24px;
  right: 24px;
  padding: 12px 20px;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  font-weight: 500;
  background: var(--bg-card);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border);
  color: #fff;
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 0.3s ease, transform 0.3s ease;
  pointer-events: none;
  z-index: 200;
}

.toast.show { opacity: 1; transform: translateY(0); }

/* ---- RESPONSIVE ---- */
@media (max-width: 640px) {
  .topbar { padding: 10px 16px; }
  .dashboard { padding: 20px 12px; }
  .grid { grid-template-columns: 1fr; }
  .container-grid { grid-template-columns: 1fr; }
}