/* ── Fonts ────────────────────────────────────────────────────────────────── */
@import url('https://fonts.googleapis.com/css2?family=JetBrains+Mono:wght@400;500;600;700&family=Oxanium:wght@500;600;700;800&display=swap');

/* ── Dark theme (default) ────────────────────────────────────────────────── */
:root {
    --sidebar-w:       210px;
    --topbar-h:        48px;

    --bg-root:         #050c17;
    --bg-sidebar:      #060d1a;
    --bg-topbar:       #07101f;
    --bg-card:         #0b1828;
    --bg-card-alt:     #091422;
    --bg-track:        rgba(255,255,255,0.06);
    --bg-pill:         rgba(255,255,255,0.05);
    --bg-nav-hover:    rgba(34,211,238,0.06);
    --bg-nav-active:   rgba(34,211,238,0.10);

    --border-sidebar:  rgba(34,211,238,0.08);
    --border-card:     rgba(255,255,255,0.07);
    --border-topbar:   rgba(255,255,255,0.05);
    --border-accent:   rgba(34,211,238,0.15);

    --text-primary:    #dde6f0;
    --text-secondary:  #4e6a82;
    --text-dim:        #253344;
    --text-label:      #3a5570;
    --text-nav:        #4e6a82;
    --text-nav-active: #22d3ee;
    --text-brand:      #e2eef8;

    --accent-cyan:     #22d3ee;
    --accent-green:    #4ade80;
    --accent-blue:     #60a5fa;
    --accent-amber:    #fbbf24;
    --accent-orange:   #fb923c;
    --accent-red:      #f87171;
    --accent-purple:   #a78bfa;

    --glow-cyan:       rgba(34,211,238,0.20);
    --glow-green:      rgba(74,222,128,0.20);
    --glow-amber:      rgba(251,191,36,0.20);
    --glow-red:        rgba(248,113,113,0.20);

    --shadow-card:     0 1px 3px rgba(0,0,0,0.5), 0 8px 24px rgba(0,0,0,0.4);
    --shadow-sidebar:  4px 0 24px rgba(0,0,0,0.4);

    --scanlines: repeating-linear-gradient(
        0deg, transparent, transparent 39px, rgba(255,255,255,0.012) 40px
    );

    color-scheme: dark;
}

/* ── Light theme ─────────────────────────────────────────────────────────── */
[data-theme="light"] {
    --bg-root:         #dce8f2;
    --bg-sidebar:      #1a2d3d;
    --bg-topbar:       #ffffff;
    --bg-card:         #ffffff;
    --bg-card-alt:     #f0f6fb;
    --bg-track:        rgba(0,0,0,0.07);
    --bg-pill:         rgba(0,0,0,0.04);
    --bg-nav-hover:    rgba(255,255,255,0.07);
    --bg-nav-active:   rgba(34,211,238,0.15);

    --border-sidebar:  rgba(255,255,255,0.06);
    --border-card:     rgba(0,0,0,0.08);
    --border-topbar:   rgba(0,0,0,0.07);
    --border-accent:   rgba(8,145,178,0.20);

    --text-primary:    #0f1e2d;
    --text-secondary:  #4a6378;
    --text-dim:        #a0b4c4;
    --text-label:      #6b90a8;
    --text-nav:        rgba(255,255,255,0.55);
    --text-nav-active: #22d3ee;
    --text-brand:      #ffffff;

    --accent-cyan:     #0891b2;
    --accent-green:    #16a34a;
    --accent-blue:     #1d4ed8;
    --accent-amber:    #b45309;
    --accent-orange:   #c2410c;
    --accent-red:      #dc2626;
    --accent-purple:   #7c3aed;

    --glow-cyan:       rgba(8,145,178,0.12);
    --glow-green:      rgba(22,163,74,0.12);
    --glow-amber:      rgba(180,83,9,0.12);
    --glow-red:        rgba(220,38,38,0.12);

    --shadow-card:     0 1px 3px rgba(0,0,0,0.06), 0 4px 16px rgba(0,0,0,0.06);
    --shadow-sidebar:  4px 0 24px rgba(0,0,0,0.18);

    --scanlines: none;

    color-scheme: light;
}

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

html, body {
    height: 100%;
    overflow: hidden;
    font-family: 'Oxanium', system-ui, sans-serif;
}

/* ── App shell ───────────────────────────────────────────────────────────── */
.app {
    display: flex;
    height: 100vh;
    background: var(--bg-root);
    color: var(--text-primary);
    transition: background 0.4s, color 0.4s;
    background-image: var(--scanlines);
}

/* ─────────────────────────────────────────────────────────────────────────────
   SIDEBAR
   ───────────────────────────────────────────────────────────────────────── */
.sidebar {
    width: var(--sidebar-w);
    flex-shrink: 0;
    background: var(--bg-sidebar);
    border-right: 1px solid var(--border-sidebar);
    box-shadow: var(--shadow-sidebar);
    display: flex;
    flex-direction: column;
    transition: background 0.4s, border-color 0.4s, transform 0.3s cubic-bezier(0.4,0,0.2,1);
    z-index: 100;
    position: relative;
}

/* Brand -------------------------------------------------------------------- */
.sidebar-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 18px 16px 16px;
    border-bottom: 1px solid var(--border-sidebar);
    flex-shrink: 0;
}

.brand-icon {
    font-size: 1.4rem;
    color: var(--accent-cyan);
    line-height: 1;
    filter: drop-shadow(0 0 6px var(--glow-cyan));
    transition: filter 0.4s;
}

.brand-name {
    display: block;
    font-family: 'Oxanium', sans-serif;
    font-weight: 800;
    font-size: 0.72rem;
    letter-spacing: 2.5px;
    color: var(--text-brand);
    text-transform: uppercase;
    transition: color 0.4s;
}

.brand-host {
    display: block;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.65rem;
    color: var(--accent-cyan);
    letter-spacing: 1px;
    margin-top: 1px;
    transition: color 0.4s;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    max-width: 130px;
}

/* Nav ---------------------------------------------------------------------- */
.sidebar-nav {
    flex: 1;
    padding: 10px 8px;
    display: flex;
    flex-direction: column;
    gap: 2px;
    overflow-y: auto;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 9px;
    padding: 8px 10px;
    border-radius: 7px;
    font-family: 'Oxanium', sans-serif;
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 0.5px;
    color: var(--text-nav);
    text-decoration: none;
    cursor: pointer;
    transition: background 0.15s, color 0.15s;
    border: 1px solid transparent;
    user-select: none;
}

.nav-item:hover {
    background: var(--bg-nav-hover);
    color: var(--text-primary);
}

.nav-item.active {
    background: var(--bg-nav-active);
    color: var(--text-nav-active);
    border-color: var(--border-accent);
}

.nav-icon {
    font-size: 1rem;
    width: 18px;
    text-align: center;
    flex-shrink: 0;
    line-height: 1;
}

/* Sidebar divider */
.nav-divider {
    height: 1px;
    background: var(--border-sidebar);
    margin: 6px 4px;
}

/* Footer ------------------------------------------------------------------- */
.sidebar-footer {
    padding: 12px 12px 14px;
    border-top: 1px solid var(--border-sidebar);
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

/* Connection pill */
.conn-pill {
    display: flex;
    align-items: center;
    gap: 5px;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.63rem;
    font-weight: 600;
    color: var(--text-nav);
    letter-spacing: 1px;
    transition: color 0.3s;
}

.status-dot {
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: var(--accent-green);
    box-shadow: 0 0 7px var(--accent-green);
    flex-shrink: 0;
    transition: background 0.3s, box-shadow 0.3s;
}

/* Theme toggle */
.theme-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0;
}

.toggle-track {
    display: block;
    width: 34px;
    height: 18px;
    border-radius: 99px;
    background: var(--bg-track);
    border: 1px solid rgba(255,255,255,0.1);
    position: relative;
    transition: background 0.35s, border-color 0.35s;
}

.toggle-thumb {
    position: absolute;
    top: 2px;
    left: 2px;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--accent-cyan);
    transition: transform 0.35s cubic-bezier(0.4,0,0.2,1), background 0.35s;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 7px;
    line-height: 1;
}

[data-theme="light"] .toggle-thumb {
    transform: translateX(16px);
    background: var(--accent-amber);
}

/* ─────────────────────────────────────────────────────────────────────────────
   MAIN PANEL
   ───────────────────────────────────────────────────────────────────────── */
.main {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    min-width: 0;
}

/* Topbar ------------------------------------------------------------------- */
.topbar {
    height: var(--topbar-h);
    background: var(--bg-topbar);
    border-bottom: 1px solid var(--border-topbar);
    display: flex;
    align-items: center;
    padding: 0 20px;
    gap: 12px;
    flex-shrink: 0;
    transition: background 0.4s, border-color 0.4s;
}

.hamburger {
    display: none;
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 1.1rem;
    cursor: pointer;
    padding: 4px;
    line-height: 1;
}

.topbar-section {
    font-family: 'Oxanium', sans-serif;
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--text-secondary);
    transition: color 0.3s;
}

.topbar-divider {
    color: var(--text-dim);
    font-size: 0.7rem;
}

.topbar-title {
    font-family: 'Oxanium', sans-serif;
    font-size: 0.8rem;
    font-weight: 700;
    letter-spacing: 1px;
    color: var(--text-primary);
    transition: color 0.3s;
}

.topbar-right {
    margin-left: auto;
    display: flex;
    align-items: center;
    gap: 14px;
}

.topbar-ts {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.62rem;
    color: var(--text-dim);
    letter-spacing: 1px;
    transition: color 0.4s;
}

/* ── Content area ─────────────────────────────────────────────────────────── */
.content {
    flex: 1;
    overflow-y: auto;
    padding: 18px 20px 28px;
    scroll-behavior: smooth;
}

/* Custom scrollbar */
.content { scrollbar-width: thin; scrollbar-color: var(--bg-track) transparent; }
.content::-webkit-scrollbar { width: 5px; }
.content::-webkit-scrollbar-track { background: transparent; }
.content::-webkit-scrollbar-thumb { background: var(--bg-track); border-radius: 99px; }
.content::-webkit-scrollbar-thumb:hover { background: var(--text-dim); }

/* Section label row */
.section-label {
    font-family: 'Oxanium', sans-serif;
    font-size: 0.6rem;
    font-weight: 700;
    letter-spacing: 3px;
    text-transform: uppercase;
    color: var(--text-label);
    margin-bottom: 10px;
    margin-top: 6px;
    transition: color 0.4s;
}

.content-section { margin-bottom: 8px; }

/* ─────────────────────────────────────────────────────────────────────────────
   STAT HERO CARDS (top row)
   ───────────────────────────────────────────────────────────────────────── */
.stat-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 10px;
    margin-bottom: 10px;
}

.stat-card {
    background: var(--bg-card);
    border: 1px solid var(--border-card);
    border-radius: 10px;
    padding: 14px 14px 12px;
    box-shadow: var(--shadow-card);
    transition: background 0.4s, border-color 0.4s, box-shadow 0.4s;
    position: relative;
    overflow: hidden;
}

.stat-card-label {
    font-family: 'Oxanium', sans-serif;
    font-size: 0.58rem;
    letter-spacing: 2.5px;
    text-transform: uppercase;
    color: var(--text-label);
    display: block;
    margin-bottom: 8px;
    transition: color 0.4s;
}

.stat-card-value {
    font-family: 'JetBrains Mono', monospace;
    font-size: 1.6rem;
    font-weight: 700;
    line-height: 1;
    transition: color 0.3s;
    display: block;
}

.stat-card-sub {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.62rem;
    color: var(--text-secondary);
    margin-top: 6px;
    display: block;
    transition: color 0.4s;
}

/* Accent corner */
.stat-card::after {
    content: '';
    position: absolute;
    bottom: 0; right: 0;
    width: 40px; height: 40px;
    border-radius: 10px 0 10px 0;
    opacity: 0.06;
}
.stat-card--cpu::after   { background: var(--accent-cyan); }
.stat-card--ram::after   { background: var(--accent-green); }
.stat-card--disk::after  { background: var(--accent-purple); }
.stat-card--down::after  { background: var(--accent-blue); }
.stat-card--up::after    { background: var(--accent-amber); }

/* ─────────────────────────────────────────────────────────────────────────────
   PANEL CARDS (detail sections)
   ───────────────────────────────────────────────────────────────────────── */
.panel-grid {
    display: grid;
    gap: 10px;
}

.panel-grid--2col { grid-template-columns: 1fr 1fr; }
.panel-grid--3col { grid-template-columns: 2fr 1fr; }

.panel {
    background: var(--bg-card);
    border: 1px solid var(--border-card);
    border-radius: 10px;
    padding: 16px;
    box-shadow: var(--shadow-card);
    transition: background 0.4s, border-color 0.4s;
}

.panel-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 14px;
}

.panel-title {
    font-family: 'Oxanium', sans-serif;
    font-size: 0.66rem;
    font-weight: 700;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--text-label);
    transition: color 0.4s;
}

.panel-badge {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.65rem;
    font-weight: 600;
    padding: 1px 8px;
    border-radius: 6px;
    background: var(--bg-pill);
    border: 1px solid rgba(255,255,255,0.07);
    transition: background 0.4s;
}

/* ── Progress bars ────────────────────────────────────────────────────────── */
.progress {
    background: var(--bg-track);
    height: 6px;
    border-radius: 99px;
    overflow: visible;
    transition: background 0.4s;
}

.progress-bar {
    height: 100%;
    border-radius: 99px;
    transition: width 0.65s cubic-bezier(0.4,0,0.2,1), box-shadow 0.4s;
}

.progress-bar.c-info    { background: var(--accent-cyan);   box-shadow: 0 0 8px var(--glow-cyan);  }
.progress-bar.c-success { background: var(--accent-green);  box-shadow: 0 0 8px var(--glow-green); }
.progress-bar.c-warning { background: var(--accent-amber);  box-shadow: 0 0 8px var(--glow-amber); }
.progress-bar.c-danger  { background: var(--accent-red);    box-shadow: 0 0 8px var(--glow-red);   }
.progress-bar.c-purple  { background: var(--accent-purple); }

/* ── Row item (label + bar + value) ──────────────────────────────────────── */
.metric-row { margin-bottom: 14px; }
.metric-row:last-child { margin-bottom: 0; }

.metric-head {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    margin-bottom: 5px;
}

.metric-label {
    font-family: 'Oxanium', sans-serif;
    font-size: 0.62rem;
    font-weight: 600;
    letter-spacing: 1.5px;
    text-transform: uppercase;
    color: var(--text-label);
    transition: color 0.4s;
}

.metric-val {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.7rem;
    color: var(--text-secondary);
    transition: color 0.4s;
}

/* ── Sparklines ───────────────────────────────────────────────────────────── */
.sparkline-wrap {
    height: 42px;
    margin-top: 10px;
}

.sparkline-wrap canvas {
    display: block;
    width: 100%;
    height: 100%;
    border-radius: 4px;
}

/* ── Per-core grid ────────────────────────────────────────────────────────── */
.core-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 8px 12px;
}

.core-label-row {
    display: flex;
    justify-content: space-between;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.58rem;
    color: var(--text-label);
    margin-bottom: 3px;
    transition: color 0.4s;
}

.core-ghz { color: var(--accent-blue); font-size: 0.55rem; transition: color 0.4s; }

.core-bar-track {
    height: 4px;
    background: var(--bg-track);
    border-radius: 99px;
    overflow: hidden;
    transition: background 0.4s;
}

.core-bar-fill {
    height: 100%;
    border-radius: 99px;
    transition: width 0.65s cubic-bezier(0.4,0,0.2,1), background 0.4s;
}

.core-pct {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.58rem;
    text-align: right;
    margin-top: 2px;
    transition: color 0.4s;
}

/* ── Load pills ───────────────────────────────────────────────────────────── */
.load-row {
    display: flex;
    gap: 6px;
    flex-wrap: wrap;
}

.load-pill {
    flex: 1;
    min-width: 0;
    text-align: center;
    background: var(--bg-card-alt);
    border: 1px solid var(--border-card);
    border-radius: 8px;
    padding: 8px 6px 6px;
    transition: background 0.4s, border-color 0.4s;
}

.load-pill-label {
    display: block;
    font-family: 'Oxanium', sans-serif;
    font-size: 0.55rem;
    letter-spacing: 1.5px;
    text-transform: uppercase;
    color: var(--text-label);
    margin-bottom: 4px;
    transition: color 0.4s;
}

.load-pill-val {
    display: block;
    font-family: 'JetBrains Mono', monospace;
    font-size: 1rem;
    font-weight: 700;
    transition: color 0.3s;
}

/* ── System info pairs ────────────────────────────────────────────────────── */
.info-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.info-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 8px 10px;
    background: var(--bg-card-alt);
    border-radius: 7px;
    border: 1px solid var(--border-card);
    transition: background 0.4s, border-color 0.4s;
}

.info-key {
    font-family: 'Oxanium', sans-serif;
    font-size: 0.62rem;
    font-weight: 600;
    letter-spacing: 1.5px;
    text-transform: uppercase;
    color: var(--text-label);
    transition: color 0.4s;
}

.info-val {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-primary);
    transition: color 0.4s;
}

/* ── Network big numbers ──────────────────────────────────────────────────── */
.net-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
    margin-top: 4px;
}

.net-box {
    background: var(--bg-card-alt);
    border: 1px solid var(--border-card);
    border-radius: 8px;
    padding: 14px 12px 10px;
    text-align: center;
    transition: background 0.4s, border-color 0.25s;
}

.net-box:hover { border-color: var(--border-accent); }

.net-dir {
    font-family: 'Oxanium', sans-serif;
    font-size: 0.55rem;
    letter-spacing: 2.5px;
    text-transform: uppercase;
    color: var(--text-label);
    display: block;
    margin-bottom: 6px;
}

.net-val {
    font-family: 'JetBrains Mono', monospace;
    font-size: 1.55rem;
    font-weight: 700;
    display: block;
    line-height: 1.1;
    transition: color 0.3s;
}

.net-unit {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.62rem;
    color: var(--text-secondary);
    display: block;
    margin-top: 3px;
}

.c-down { color: var(--accent-cyan); }
.c-up   { color: var(--accent-amber); }

/* ── Temperature badge ────────────────────────────────────────────────────── */
.temp-badge {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.68rem;
    font-weight: 600;
    background: var(--bg-pill);
    border: 1px solid rgba(255,255,255,0.07);
    border-radius: 6px;
    padding: 1px 8px;
    transition: background 0.4s;
}

/* ─────────────────────────────────────────────────────────────────────────────
   STAGGER ANIMATIONS
   ───────────────────────────────────────────────────────────────────────── */
.stat-card {
    animation: fadeUp 0.4s cubic-bezier(0.4,0,0.2,1) both;
}
.stat-card:nth-child(1) { animation-delay: 0.04s; }
.stat-card:nth-child(2) { animation-delay: 0.08s; }
.stat-card:nth-child(3) { animation-delay: 0.12s; }
.stat-card:nth-child(4) { animation-delay: 0.16s; }
.stat-card:nth-child(5) { animation-delay: 0.20s; }

.panel {
    animation: fadeUp 0.4s cubic-bezier(0.4,0,0.2,1) both;
    animation-delay: 0.22s;
}

@keyframes fadeUp {
    from { opacity: 0; transform: translateY(10px); }
    to   { opacity: 1; transform: translateY(0); }
}

/* Respect user motion preferences */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}


/* ─────────────────────────────────────────────────────────────────────────────
   RESPONSIVE
   ───────────────────────────────────────────────────────────────────────── */
@media (max-width: 900px) {
    .stat-grid { grid-template-columns: repeat(3, 1fr); }
    .panel-grid--3col { grid-template-columns: 1fr; }
    .core-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 680px) {
    :root { --sidebar-w: 0px; }

    .sidebar {
        position: fixed;
        top: 0; left: 0; bottom: 0;
        width: 210px;
        transform: translateX(-100%);
        z-index: 200;
    }

    .app.sidebar-open .sidebar { transform: translateX(0); }
    .app.sidebar-open .sidebar-overlay { display: block; }

    .sidebar-overlay {
        display: none;
        position: fixed;
        inset: 0;
        background: rgba(0,0,0,0.5);
        z-index: 199;
    }

    .hamburger { display: block; }

    .stat-grid { grid-template-columns: repeat(2, 1fr); }
    .panel-grid--2col { grid-template-columns: 1fr; }
}

@media (max-width: 400px) {
    .stat-grid { grid-template-columns: 1fr 1fr; }
    .core-grid { grid-template-columns: repeat(2, 1fr); }
}