/* ============================================
   Admin Panel - Custom Styles
   ============================================ */

:root {
    --sidebar-width: 252px;
    --header-height: 64px;

    /* Brand accent */
    --brand-primary: #6366f1;
    --brand-primary-hover: #4f46e5;
    --brand-accent: #8b5cf6;

    /* Refined gradients */
    --primary-gradient: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);
    --accent-gradient: linear-gradient(135deg, #ec4899 0%, #f43f5e 100%);
    --success-gradient: linear-gradient(135deg, #10b981 0%, #14b8a6 100%);
    --info-gradient: linear-gradient(135deg, #06b6d4 0%, #3b82f6 100%);
    --warning-gradient: linear-gradient(135deg, #f59e0b 0%, #f97316 100%);
    --danger-gradient: linear-gradient(135deg, #ef4444 0%, #f43f5e 100%);

    /* Light Mode (Default) */
    --bg-body: #eef2f7;
    --bg-sidebar: #ffffff;
    --bg-card: #ffffff;
    --bg-header: rgba(255, 255, 255, 0.9);
    --bg-subtle: #f8fafc;
    --text-primary: #0f172a;
    --text-secondary: #334155;
    --text-muted: #64748b;
    --border-color: #d8dee8;
    --border-subtle: #e5e9f0;
    --sidebar-hover: #eef2f7;
    --sidebar-active-bg: linear-gradient(135deg, #6366f120, #8b5cf620);
    --sidebar-active-border: #6366f1;
    --shadow-xs: 0 1px 2px rgba(15, 23, 42, 0.06);
    --shadow-sm: 0 2px 4px rgba(15, 23, 42, 0.06), 0 1px 2px rgba(15, 23, 42, 0.04);
    --shadow-md: 0 8px 16px rgba(15, 23, 42, 0.08), 0 2px 4px rgba(15, 23, 42, 0.06);
    --shadow-lg: 0 12px 28px rgba(15, 23, 42, 0.1), 0 4px 10px rgba(15, 23, 42, 0.06);
    --input-bg: #ffffff;
    --input-border: #d8dee8;
    --input-focus-ring: rgba(99, 102, 241, 0.18);
    --table-stripe: #f5f7fb;
    --code-bg: #eef2f7;
}

[data-theme="dark"] {
    --bg-body: #0a0d13;
    --bg-sidebar: #11151f;
    --bg-card: #1a1f2e;
    --bg-header: rgba(17, 21, 31, 0.85);
    --bg-subtle: #242a3a;
    --text-primary: #f8fafc;
    --text-secondary: #cbd5e1;
    --text-muted: #94a3b8;
    --border-color: #2a3040;
    --border-subtle: #1e2433;
    --sidebar-hover: #242a3a;
    --sidebar-active-bg: linear-gradient(135deg, #6366f130, #8b5cf630);
    --sidebar-active-border: #818cf8;
    --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.3);
    --shadow-sm: 0 2px 6px rgba(0, 0, 0, 0.4);
    --shadow-md: 0 8px 20px rgba(0, 0, 0, 0.5);
    --shadow-lg: 0 15px 35px rgba(0, 0, 0, 0.6);
    --input-bg: #242a3a;
    --input-border: #333a4d;
    --input-focus-ring: rgba(129, 140, 248, 0.25);
    --table-stripe: #1e2333;
    --code-bg: #242a3a;
}

/* ---- Global ---- */
* { box-sizing: border-box; }

html { font-size: 15px; background: var(--bg-body); color-scheme: light; }

html[data-theme="dark"] { color-scheme: dark; background: #0a0d13; }

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--bg-body);
    color: var(--text-primary);
    margin: 0;
    padding: 0;
    min-height: 100vh;
    transition: background 0.25s ease, color 0.25s ease;
    font-feature-settings: 'cv02', 'cv03', 'cv04', 'cv11';
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    letter-spacing: -0.01em;
}

a {
    color: var(--brand-primary);
    text-decoration: none;
    transition: color 0.15s ease;
}
a:hover { color: var(--brand-primary-hover); }

h1, h2, h3, h4, h5, h6 {
    letter-spacing: -0.02em;
    font-weight: 700;
}

code {
    font-family: 'JetBrains Mono', 'SF Mono', Menlo, Monaco, monospace;
    font-size: 0.86em;
    background: var(--code-bg);
    padding: 2px 6px;
    border-radius: 5px;
    color: var(--brand-accent);
}

::selection {
    background: var(--brand-primary);
    color: #fff;
}

/* ---- Gradient Text ---- */
.gradient-text {
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-weight: 700;
}

.gradient-text-accent {
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-weight: 700;
}

.gradient-text-success {
    background: var(--success-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-weight: 700;
}

.gradient-text-info {
    background: var(--info-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-weight: 700;
}

/* ---- Top Header ---- */
.top-header {
    position: fixed;
    top: 0;
    left: var(--sidebar-width);
    right: 0;
    height: var(--header-height);
    background: var(--bg-header);
    backdrop-filter: saturate(180%) blur(16px);
    -webkit-backdrop-filter: saturate(180%) blur(16px);
    border-bottom: 1px solid var(--border-color);
    z-index: 1040;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 28px;
    transition: left 0.3s;
}

.top-header .header-left {
    display: flex;
    align-items: center;
    gap: 14px;
}

.top-header .header-right {
    display: flex;
    align-items: center;
    gap: 12px;
}

.sidebar-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 1.3rem;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 6px 10px;
    border-radius: 8px;
    transition: background 0.15s, color 0.15s;
}

.sidebar-toggle:hover {
    background: var(--sidebar-hover);
    color: var(--text-primary);
}

.header-search {
    position: relative;
}

.header-search input {
    background: var(--bg-subtle);
    border: 1px solid transparent;
    border-radius: 10px;
    padding: 8px 14px 8px 38px;
    font-size: 0.85rem;
    color: var(--text-primary);
    width: 280px;
    transition: all 0.15s ease;
}

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

.header-search input:focus {
    outline: none;
    background: var(--input-bg);
    border-color: var(--brand-primary);
    box-shadow: 0 0 0 3px var(--input-focus-ring);
    width: 320px;
}

.header-search .bi {
    position: absolute;
    left: 14px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
    font-size: 0.9rem;
    pointer-events: none;
}

/* ---- Dark Mode Toggle ---- */
.theme-toggle {
    background: var(--bg-subtle);
    border: 1px solid transparent;
    border-radius: 10px;
    width: 36px;
    height: 36px;
    padding: 0;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    transition: all 0.15s ease;
}

.theme-toggle:hover {
    background: var(--sidebar-hover);
    color: var(--text-primary);
}

.theme-toggle .bi { font-size: 1rem; }
.theme-toggle .theme-label { display: none; }

/* ---- Sidebar ---- */
.sidebar {
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    width: var(--sidebar-width);
    background: var(--bg-sidebar);
    border-right: 1px solid var(--border-color);
    z-index: 1050;
    display: flex;
    flex-direction: column;
    transition: transform 0.3s, background 0.25s;
    overflow-y: auto;
    overflow-x: hidden;
}

.sidebar::-webkit-scrollbar { width: 4px; }
.sidebar::-webkit-scrollbar-thumb { background: transparent; }
.sidebar:hover::-webkit-scrollbar-thumb { background: var(--border-color); }

.sidebar-brand {
    height: var(--header-height);
    display: flex;
    align-items: center;
    padding: 0 20px;
    border-bottom: 1px solid var(--border-color);
    gap: 12px;
    flex-shrink: 0;
}

.sidebar-brand .brand-icon {
    width: 34px;
    height: 34px;
    background: var(--primary-gradient);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 1rem;
    flex-shrink: 0;
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.35);
}

.sidebar-brand .brand-name {
    font-size: 1.02rem;
    font-weight: 700;
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    letter-spacing: -0.02em;
}

.sidebar-nav {
    flex: 1;
    padding: 10px 0;
}

.nav-section-title {
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: var(--text-secondary);
    padding: 18px 22px 8px;
    font-weight: 700;
    position: relative;
}

.nav-section-title::after {
    content: '';
    display: block;
    position: absolute;
    left: 22px;
    right: 22px;
    bottom: 4px;
    height: 1px;
    background: var(--border-color);
}

.sidebar-nav > .nav-section-title:first-child {
    padding-top: 10px;
}

.sidebar-nav ul.nav {
    padding: 4px 0;
}

.sidebar-nav .nav-item {
    margin: 0 14px;
    padding: 0;
    position: relative;
}

.sidebar-nav .nav-item + .nav-item {
    border-top: 1px solid var(--border-color);
}

.sidebar-nav .collapse .nav-item {
    border-top: none !important;
}

.sidebar-nav .nav-link {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 11px 8px;
    border-radius: 8px;
    color: var(--text-secondary);
    font-size: 0.92rem;
    font-weight: 500;
    transition: all 0.15s ease;
    text-decoration: none;
    position: relative;
    line-height: 1.3;
}

.sidebar-nav .nav-link:hover {
    background: var(--sidebar-hover);
    color: var(--text-primary);
}

.sidebar-nav .nav-link[aria-expanded="true"] .bi-chevron-down {
    transform: rotate(180deg);
}

.sidebar-nav .nav-link[aria-expanded="false"] .bi-chevron-down {
    transform: rotate(0deg);
}

.sidebar-nav .nav-link.active {
    background: var(--sidebar-active-bg);
    color: var(--brand-primary);
    font-weight: 600;
    box-shadow: inset 3px 0 0 var(--brand-primary);
}

[data-theme="dark"] .sidebar-nav .nav-link.active {
    color: #a5b4fc;
    box-shadow: inset 3px 0 0 #a5b4fc;
}

.sidebar-nav .nav-link .nav-icon {
    font-size: 1.15rem;
    width: 24px;
    min-width: 24px;
    height: 24px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    flex-shrink: 0;
    line-height: 1;
}

.sidebar-nav .nav-link > span:not(.nav-icon) {
    flex: 1;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* Colorful Icons */
.icon-dashboard { color: #6366f1; }
.icon-nodes { color: #ec4899; }
.icon-workflow { color: #10b981; }
.icon-installer { color: #06b6d4; }
.icon-docs { color: #f97316; }
.icon-arch { color: #8b5cf6; }
.icon-settings { color: #14b8a6; }
.icon-users { color: #ef4444; }

.sidebar-footer {
    padding: 14px 22px;
    border-top: 1px solid var(--border-color);
    font-size: 0.75rem;
    color: var(--text-secondary);
    flex-shrink: 0;
    letter-spacing: 0.02em;
    font-weight: 500;
}

/* ---- Main Content ---- */
.main-content {
    margin-left: var(--sidebar-width);
    margin-top: var(--header-height);
    padding: 28px 32px;
    min-height: calc(100vh - var(--header-height));
    transition: margin-left 0.3s;
}

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

.page-header h1 {
    letter-spacing: -0.025em;
}

.page-header h1 {
    font-size: 1.55rem;
    font-weight: 700;
    margin: 0 0 6px;
    letter-spacing: -0.025em;
    line-height: 1.2;
}

.page-header p {
    color: var(--text-secondary);
    margin: 0;
    font-size: 0.88rem;
}

/* ---- Cards ---- */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 14px;
    box-shadow: var(--shadow-xs);
    transition: background 0.25s, border-color 0.25s, box-shadow 0.2s;
}

.card:hover {
    box-shadow: var(--shadow-sm);
}

.card-header {
    background: transparent;
    border-bottom: 1px solid var(--border-color);
    padding: 16px 22px;
    font-weight: 600;
    font-size: 0.92rem;
}

.card-body { padding: 22px; }

.stat-card {
    padding: 20px;
    border-radius: 14px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-xs);
    transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s;
}

.stat-card:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-sm);
    border-color: rgba(99, 102, 241, 0.2);
}

.stat-card .stat-icon {
    width: 44px;
    height: 44px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    color: #fff;
    margin-bottom: 12px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.08);
}

.stat-card .stat-value {
    font-size: 1.65rem;
    font-weight: 700;
    line-height: 1;
    margin-bottom: 4px;
    letter-spacing: -0.02em;
}

.stat-card .stat-label {
    font-size: 0.74rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.06em;
    font-weight: 600;
}

/* ---- Tables ---- */
.table {
    --bs-table-bg: transparent;
    --bs-table-color: var(--text-primary);
    --bs-table-border-color: var(--border-color);
    --bs-table-striped-bg: var(--table-stripe);
    --bs-table-hover-bg: var(--sidebar-hover);
    color: var(--text-primary);
}

.table thead th {
    font-size: 0.72rem;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--text-muted);
    border-bottom: 1px solid var(--border-color);
    font-weight: 600;
    padding: 12px 18px;
    white-space: nowrap;
    background: var(--bg-subtle);
}

.table tbody tr {
    background: transparent;
    transition: background 0.12s ease;
}

.table tbody td {
    padding: 14px 18px;
    border-bottom: 1px solid var(--border-subtle);
    vertical-align: middle;
    font-size: 0.86rem;
    background: transparent;
    color: var(--text-primary);
}

.table tbody tr:last-child td {
    border-bottom: none;
}

.table tbody tr:nth-of-type(even) {
    background: transparent;
}

.table-striped tbody tr:nth-of-type(odd) {
    background: var(--table-stripe);
}

.table-hover tbody tr:hover {
    background: var(--bg-subtle);
}

.table code {
    background: var(--code-bg);
    color: var(--text-primary);
    padding: 2px 8px;
    border-radius: 5px;
    font-size: 0.82rem;
}

/* ---- Badges ---- */
.badge-status {
    padding: 4px 10px;
    border-radius: 6px;
    font-size: 0.72rem;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 5px;
    letter-spacing: 0.01em;
    line-height: 1.4;
}

.badge-active { background: #d1fae5; color: #065f46; }
.badge-inactive { background: #fee2e2; color: #991b1b; }
.badge-maintenance { background: #fef3c7; color: #92400e; }
.badge-pending { background: #e0e7ff; color: #3730a3; }
.badge-processing { background: #fef3c7; color: #92400e; }
.badge-completed { background: #d1fae5; color: #065f46; }

[data-theme="dark"] .badge-active { background: rgba(16, 185, 129, 0.2); color: #6ee7b7; border: 1px solid rgba(16, 185, 129, 0.3); }
[data-theme="dark"] .badge-inactive { background: rgba(239, 68, 68, 0.2); color: #fca5a5; border: 1px solid rgba(239, 68, 68, 0.3); }
[data-theme="dark"] .badge-maintenance { background: rgba(245, 158, 11, 0.2); color: #fcd34d; border: 1px solid rgba(245, 158, 11, 0.3); }
[data-theme="dark"] .badge-pending { background: rgba(99, 102, 241, 0.2); color: #a5b4fc; border: 1px solid rgba(99, 102, 241, 0.3); }
[data-theme="dark"] .badge-processing { background: rgba(245, 158, 11, 0.2); color: #fcd34d; border: 1px solid rgba(245, 158, 11, 0.3); }
[data-theme="dark"] .badge-completed { background: rgba(16, 185, 129, 0.2); color: #6ee7b7; border: 1px solid rgba(16, 185, 129, 0.3); }

/* ---- Buttons ---- */
.btn {
    font-size: 0.85rem;
    font-weight: 500;
    border-radius: 8px;
    padding: 7px 16px;
    transition: all 0.15s ease;
    letter-spacing: -0.005em;
}

.btn-gradient {
    background: var(--primary-gradient);
    color: #fff !important;
    border: none;
    border-radius: 8px;
    padding: 8px 18px;
    font-weight: 600;
    font-size: 0.85rem;
    box-shadow: 0 2px 6px rgba(99, 102, 241, 0.3);
    transition: all 0.15s ease;
}

.btn-gradient:hover {
    background: var(--primary-gradient);
    color: #fff;
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.45);
}

.btn-gradient:active {
    transform: translateY(0);
}

.btn-sm { padding: 6px 14px; font-size: 0.8rem; }

.btn-icon {
    width: 32px;
    height: 32px;
    padding: 0;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 8px;
    font-size: 0.85rem;
    transition: all 0.15s ease;
}

.btn-icon:hover {
    transform: translateY(-1px);
}

/* Action button colors */
.btn-act-view {
    background: #e8f5e9;
    color: #2e7d32;
    border: none;
}
.btn-act-view:hover { background: #c8e6c9; color: #1b5e20; }

.btn-act-edit {
    background: #e3f2fd;
    color: #1565c0;
    border: none;
}
.btn-act-edit:hover { background: #bbdefb; color: #0d47a1; }

.btn-act-delete {
    background: #ffebee;
    color: #c62828;
    border: none;
}
.btn-act-delete:hover { background: #ffcdd2; color: #b71c1c; }

.btn-act-ssh {
    background: #e0f2f1;
    color: #00695c;
    border: none;
}
.btn-act-ssh:hover { background: #b2dfdb; color: #004d40; }

.btn-act-check {
    background: #f3e5f5;
    color: #7b1fa2;
    border: none;
}
.btn-act-check:hover { background: #e1bee7; color: #6a1b9a; }

.btn-act-default {
    background: #f5f5f5;
    color: #616161;
    border: none;
}
.btn-act-default:hover { background: #eeeeee; color: #424242; }

[data-theme="dark"] .btn-act-view { background: #1b5e2030; color: #66bb6a; }
[data-theme="dark"] .btn-act-view:hover { background: #1b5e2050; }
[data-theme="dark"] .btn-act-edit { background: #1565c030; color: #42a5f5; }
[data-theme="dark"] .btn-act-edit:hover { background: #1565c050; }
[data-theme="dark"] .btn-act-delete { background: #c6282830; color: #ef5350; }
[data-theme="dark"] .btn-act-delete:hover { background: #c6282850; }
[data-theme="dark"] .btn-act-ssh { background: #00695c30; color: #4db6ac; }
[data-theme="dark"] .btn-act-ssh:hover { background: #00695c50; }
[data-theme="dark"] .btn-act-check { background: #7b1fa230; color: #ba68c8; }
[data-theme="dark"] .btn-act-check:hover { background: #7b1fa250; }
[data-theme="dark"] .btn-act-default { background: #61616130; color: #bdbdbd; }
[data-theme="dark"] .btn-act-default:hover { background: #61616150; }

/* ---- Forms ---- */
.form-control, .form-select {
    background: var(--input-bg);
    border: 1px solid var(--input-border);
    color: var(--text-primary);
    border-radius: 8px;
    padding: 9px 14px;
    font-size: 0.86rem;
    transition: border-color 0.15s, box-shadow 0.15s, background 0.15s;
}

.form-control::placeholder { color: var(--text-muted); }

.form-control:hover:not(:focus), .form-select:hover:not(:focus) {
    border-color: var(--text-muted);
}

.form-control:focus, .form-select:focus {
    background: var(--input-bg);
    color: var(--text-primary);
    border-color: var(--brand-primary);
    box-shadow: 0 0 0 3px var(--input-focus-ring);
}

.form-control-sm, .form-select-sm {
    padding: 6px 10px;
    font-size: 0.8rem;
    border-radius: 6px;
}

.form-label {
    font-size: 0.78rem;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 6px;
    letter-spacing: 0.005em;
}

textarea.form-control { min-height: 100px; }

.form-check-input:checked {
    background-color: var(--brand-primary);
    border-color: var(--brand-primary);
}

.form-check-input:focus {
    box-shadow: 0 0 0 3px var(--input-focus-ring);
    border-color: var(--brand-primary);
}

/* ---- Login Page ---- */
.login-wrapper {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #6366f1 0%, #8b5cf6 50%, #ec4899 100%);
    padding: 20px;
    position: relative;
    overflow: hidden;
}

.login-wrapper::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at 20% 30%, rgba(255,255,255,0.15), transparent 50%),
                radial-gradient(circle at 80% 70%, rgba(255,255,255,0.1), transparent 50%);
    pointer-events: none;
}

.login-card {
    background: var(--bg-card);
    border-radius: 20px;
    padding: 44px;
    width: 100%;
    max-width: 430px;
    box-shadow: 0 25px 70px rgba(0,0,0,0.25), 0 10px 25px rgba(0,0,0,0.15);
    position: relative;
    z-index: 1;
    border: 1px solid rgba(255,255,255,0.1);
}

.login-card .login-logo {
    width: 60px;
    height: 60px;
    background: var(--primary-gradient);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 1.6rem;
    margin: 0 auto 20px;
    box-shadow: 0 10px 30px rgba(99, 102, 241, 0.4);
}

.login-card h2 {
    text-align: center;
    margin-bottom: 6px;
    font-size: 1.4rem;
    letter-spacing: -0.02em;
}

.login-card .login-subtitle {
    text-align: center;
    color: var(--text-secondary);
    font-size: 0.88rem;
    margin-bottom: 32px;
}

/* ---- Installer Output ---- */
.installer-output {
    background: #1e1e2e;
    color: #ffffff !important;
    border-radius: 10px;
    padding: 20px;
    font-family: 'JetBrains Mono', 'Fira Code', monospace;
    font-size: 0.82rem;
    line-height: 1.6;
    overflow-x: auto;
    white-space: pre;
    position: relative;
}

.installer-output code {
    background: transparent;
    color: #ffffff !important;
    white-space: pre;
    word-break: normal;
    display: block;
    padding: 0;
    font-size: inherit;
}

.installer-output .copy-btn {
    position: absolute;
    top: 10px;
    right: 10px;
    background: rgba(255,255,255,0.1);
    border: 1px solid rgba(255,255,255,0.2);
    color: #cdd6f4;
    padding: 4px 12px;
    border-radius: 6px;
    font-size: 0.75rem;
    cursor: pointer;
}

.installer-output .copy-btn:hover { background: rgba(255,255,255,0.2); }

/* ---- Checklist ---- */
.checklist-item {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    padding: 14px 16px;
    border: 1px solid var(--border-color);
    border-radius: 10px;
    margin-bottom: 10px;
    background: var(--bg-card);
    transition: box-shadow 0.2s;
}

.checklist-item:hover { box-shadow: var(--shadow-sm); }

.checklist-item .item-status {
    flex-shrink: 0;
    margin-top: 2px;
}

.checklist-item .item-content { flex: 1; }
.checklist-item .item-name { font-weight: 600; font-size: 0.92rem; }
.checklist-item .item-details { font-size: 0.82rem; color: var(--text-secondary); margin-top: 4px; }
.checklist-item .item-actions { flex-shrink: 0; display: flex; gap: 4px; }

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

/* ---- Empty State ---- */
.empty-state {
    text-align: center;
    padding: 60px 20px;
    color: var(--text-muted);
}

.empty-state .bi { font-size: 3rem; margin-bottom: 12px; display: block; }
.empty-state p { margin: 0; font-size: 0.92rem; }

/* ---- Footer ---- */
.main-footer {
    padding: 16px 24px;
    margin-left: var(--sidebar-width);
    border-top: 1px solid var(--border-color);
    font-size: 0.8rem;
    color: var(--text-muted);
    text-align: center;
    transition: margin-left 0.3s;
}

/* ---- User Avatar ---- */
.user-avatar {
    width: 36px;
    height: 36px;
    border-radius: 10px;
    background: var(--primary-gradient);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-weight: 600;
    font-size: 0.85rem;
    cursor: pointer;
    box-shadow: 0 2px 8px rgba(99, 102, 241, 0.3);
    transition: transform 0.15s;
    letter-spacing: 0;
}

.user-avatar:hover {
    transform: translateY(-1px);
}

.dropdown-menu {
    border-radius: 10px;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-lg);
    padding: 6px;
    font-size: 0.86rem;
    min-width: 200px;
}

.dropdown-item {
    border-radius: 6px;
    padding: 7px 12px;
    transition: background 0.12s;
}

.dropdown-divider {
    margin: 4px 0;
    border-color: var(--border-subtle);
}

/* ---- Responsive ---- */
@media (max-width: 991.98px) {
    .sidebar {
        transform: translateX(-100%);
    }

    .sidebar.show {
        transform: translateX(0);
    }

    .top-header {
        left: 0;
    }

    .main-content {
        margin-left: 0;
    }

    .main-footer {
        margin-left: 0;
    }

    .sidebar-toggle {
        display: block;
    }

    .sidebar-overlay {
        display: none;
        position: fixed;
        inset: 0;
        background: rgba(0,0,0,0.5);
        z-index: 1045;
    }

    .sidebar-overlay.show {
        display: block;
    }

    .header-search input {
        width: 160px;
    }
}

@media (max-width: 575.98px) {
    .main-content { padding: 16px; }
    .page-header h1 { font-size: 1.2rem; }
    .header-search { display: none; }
    .stat-card .stat-value { font-size: 1.4rem; }
}

/* ---- Misc ---- */
.text-gradient { background: var(--primary-gradient); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.border-gradient { border-image: var(--primary-gradient) 1; }
.bg-gradient-primary { background: var(--primary-gradient); }
.bg-gradient-accent { background: var(--accent-gradient); }
.bg-gradient-success { background: var(--success-gradient); }
.bg-gradient-info { background: var(--info-gradient); }
.bg-gradient-warning { background: var(--warning-gradient); }

.fade-in { animation: fadeIn 0.3s ease-in; }
@keyframes fadeIn { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: translateY(0); } }

/* Alert styles */
.alert { border-radius: 10px; font-size: 0.88rem; border: none; }

/* Node status dot */
.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    display: inline-block;
    margin-right: 6px;
}

.status-dot.active { background: #43e97b; }
.status-dot.inactive { background: #f5576c; }
.status-dot.maintenance { background: #fda085; }

/* Architecture diagram */
.arch-card {
    border: 1px solid var(--border-color);
    border-radius: 10px;
    padding: 20px;
    background: var(--bg-card);
    height: 100%;
}

.arch-card pre {
    background: var(--code-bg);
    padding: 16px;
    border-radius: 8px;
    font-size: 0.82rem;
    overflow-x: auto;
    color: var(--text-primary);
}

/* ---- Dark Mode Bootstrap Overrides ---- */
[data-theme="dark"] .table,
[data-theme="dark"] .table thead th,
[data-theme="dark"] .table tbody td {
    color: var(--text-primary) !important;
    background: transparent !important;
    border-color: var(--border-color) !important;
}

[data-theme="dark"] .table tbody tr:nth-of-type(even) td {
    background: var(--table-stripe) !important;
}

[data-theme="dark"] .table-hover tbody tr:hover td {
    background: var(--sidebar-hover) !important;
}

[data-theme="dark"] .dropdown-menu {
    background: var(--bg-card);
    border-color: var(--border-color);
    color: var(--text-primary);
}

[data-theme="dark"] .dropdown-item {
    color: var(--text-primary);
}

[data-theme="dark"] .dropdown-item:hover {
    background: var(--sidebar-hover);
    color: var(--text-primary);
}

[data-theme="dark"] .dropdown-item-text {
    color: var(--text-primary) !important;
}

[data-theme="dark"] .dropdown-divider {
    border-color: var(--border-color);
}

[data-theme="dark"] .btn-outline-secondary {
    color: var(--text-secondary);
    border-color: var(--border-color);
}

[data-theme="dark"] .btn-outline-secondary:hover {
    background: var(--sidebar-hover);
    color: var(--text-primary);
    border-color: var(--border-color);
}

[data-theme="dark"] .btn-outline-primary {
    color: #667eea;
    border-color: #667eea40;
}

[data-theme="dark"] .btn-close {
    filter: invert(1);
}

[data-theme="dark"] .badge.bg-light {
    background: var(--sidebar-hover) !important;
    color: var(--text-primary) !important;
}

[data-theme="dark"] .modal-content {
    background: var(--bg-card) !important;
    color: var(--text-primary) !important;
    border-color: var(--border-color) !important;
}

[data-theme="dark"] .modal-header,
[data-theme="dark"] .modal-footer {
    border-color: var(--border-color) !important;
}

[data-theme="dark"] .form-control,
[data-theme="dark"] .form-select {
    background: var(--input-bg) !important;
    color: var(--text-primary) !important;
    border-color: var(--input-border) !important;
}

[data-theme="dark"] .input-group-text {
    background: var(--input-bg);
    color: var(--text-muted);
    border-color: var(--input-border);
}

[data-theme="dark"] .form-check-input {
    background-color: var(--input-bg);
    border-color: var(--input-border);
}

[data-theme="dark"] .progress {
    background-color: var(--border-color);
}

[data-theme="dark"] .alert {
    color: var(--text-primary);
}

[data-theme="dark"] .card-header {
    color: var(--text-primary);
}

[data-theme="dark"] code {
    color: #e685b5;
}

[data-theme="dark"] .text-muted {
    color: var(--text-muted) !important;
}

[data-theme="dark"] .small.text-muted,
[data-theme="dark"] .text-secondary {
    color: var(--text-secondary) !important;
}

/* ---- Modern Modal ---- */
.modal-content {
    border-radius: 16px !important;
    border: 1px solid var(--border-color) !important;
    box-shadow: 0 25px 70px rgba(0,0,0,0.2) !important;
}

.modal-header {
    padding: 18px 24px;
    border-color: var(--border-color) !important;
}

.modal-header .modal-title {
    font-size: 1.05rem;
    font-weight: 600;
    letter-spacing: -0.015em;
}

.modal-body { padding: 22px 24px; }

.modal-footer {
    padding: 14px 24px;
    border-color: var(--border-color) !important;
}

/* ---- Button Outline Variants ---- */
.btn-outline-primary {
    color: var(--brand-primary);
    border-color: var(--brand-primary);
}
.btn-outline-primary:hover {
    background: var(--brand-primary);
    border-color: var(--brand-primary);
    color: #fff;
}

.btn-outline-secondary {
    color: var(--text-secondary);
    border-color: var(--border-color);
    background: transparent;
}
.btn-outline-secondary:hover {
    background: var(--bg-subtle);
    color: var(--text-primary);
    border-color: var(--border-color);
}

.btn-outline-danger {
    color: #ef4444;
    border-color: #ef4444;
}

/* Page header refinements */
.page-header { margin-bottom: 28px; }

/* Card body default font */
.card-body { font-size: 0.88rem; }

/* Smooth transitions */
.btn, .card, .form-control, .form-select, .nav-link { will-change: transform; }

/* Progress bars */
.progress {
    background: var(--border-color);
    border-radius: 100px;
    height: 6px;
    overflow: hidden;
}

.progress-bar {
    border-radius: 100px;
}

/* Loading shimmer */
@keyframes shimmer {
    0% { background-position: -200% 0; }
    100% { background-position: 200% 0; }
}

/* Action button refinements */
.btn-act-view, .btn-act-edit, .btn-act-delete, .btn-act-ssh, .btn-act-check, .btn-act-default {
    border-radius: 8px;
    box-shadow: var(--shadow-xs);
}

/* Input group text */
.input-group-text {
    background: var(--input-bg);
    border-color: var(--input-border);
    color: var(--text-muted);
    border-radius: 8px 0 0 8px;
}

/* Nav tabs refinement */
.nav-tabs {
    border-bottom-color: var(--border-color);
}

/* Code highlight class */
pre {
    border-radius: 10px;
}

/* Smooth page transitions (disabled - was causing visual flicker) */
.fade-in {
    animation: fadeIn 0.2s ease-out;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}