/* ═══════════════════════════════════════════════════════════════════════════
   Server Monitor Dashboard — Styles
   ═══════════════════════════════════════════════════════════════════════════ */

/* ─── Reset & Base ───────────────────────────────────────────────────────── */

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

:root {
    --bg-primary: #f0f2f5;
    --bg-secondary: #ffffff;
    --bg-card: rgba(255, 255, 255, 0.85);
    --bg-card-hover: rgba(255, 255, 255, 0.95);
    --border-color: rgba(0, 0, 0, 0.08);
    --border-glow: rgba(99, 102, 241, 0.25);

    --text-primary: #1e293b;
    --text-secondary: #475569;
    --text-muted: #94a3b8;

    --cpu-start: #6366f1;
    --cpu-end: #06b6d4;
    --ram-start: #a855f7;
    --ram-end: #ec4899;
    --disk-start: #f97316;
    --disk-end: #eab308;
    --net-start: #10b981;
    --net-end: #06b6d4;

    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 20px;

    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.08);
    --shadow-glow-cpu: 0 4px 20px rgba(99, 102, 241, 0.12);
    --shadow-glow-ram: 0 4px 20px rgba(168, 85, 247, 0.12);
    --shadow-glow-disk: 0 4px 20px rgba(249, 115, 22, 0.12);
    --shadow-glow-net: 0 4px 20px rgba(16, 185, 129, 0.12);
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

/* ─── Background Effects ─────────────────────────────────────────────────── */

.bg-effects {
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 0;
    overflow: hidden;
}

.bg-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(100px);
    opacity: 0.12;
    animation: orbFloat 20s ease-in-out infinite;
}

.bg-orb-1 {
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, var(--cpu-start), transparent 70%);
    top: -200px;
    right: -100px;
    animation-delay: 0s;
}

.bg-orb-2 {
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, var(--ram-start), transparent 70%);
    bottom: -150px;
    left: -100px;
    animation-delay: -7s;
}

.bg-orb-3 {
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, var(--net-start), transparent 70%);
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    animation-delay: -14s;
}

@keyframes orbFloat {

    0%,
    100% {
        transform: translate(0, 0) scale(1);
    }

    25% {
        transform: translate(30px, -40px) scale(1.05);
    }

    50% {
        transform: translate(-20px, 30px) scale(0.95);
    }

    75% {
        transform: translate(40px, 20px) scale(1.02);
    }
}

/* ─── Container ──────────────────────────────────────────────────────────── */

.container {
    position: relative;
    z-index: 1;
    max-width: 1360px;
    margin: 0 auto;
    padding: 24px 28px 48px;
}

/* ─── Header ─────────────────────────────────────────────────────────────── */

.header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 28px;
    padding: 16px 24px;
    background: var(--bg-card);
    backdrop-filter: blur(20px);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
}

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

.logo {
    display: flex;
    align-items: center;
}

.header h1 {
    font-size: 1.35rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    background: linear-gradient(135deg, #1e293b, #475569);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.header-subtitle {
    font-size: 0.78rem;
    color: var(--text-muted);
    margin-top: 1px;
}

.header-badges {
    display: flex;
    align-items: center;
    gap: 10px;
}

.load-badge {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 6px 14px;
    background: rgba(99, 102, 241, 0.1);
    border: 1px solid rgba(99, 102, 241, 0.2);
    border-radius: 100px;
    font-size: 0.78rem;
    font-weight: 500;
    color: #818cf8;
}

.load-label {
    color: #64748b;
    font-weight: 400;
}

.uptime-badge {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 6px 14px;
    background: rgba(16, 185, 129, 0.1);
    border: 1px solid rgba(16, 185, 129, 0.2);
    border-radius: 100px;
    font-size: 0.78rem;
    font-weight: 500;
    color: #34d399;
}

.pulse-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: #10b981;
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {

    0%,
    100% {
        opacity: 1;
        box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.4);
    }

    50% {
        opacity: 0.7;
        box-shadow: 0 0 0 6px rgba(16, 185, 129, 0);
    }
}

/* ─── Stats Grid ─────────────────────────────────────────────────────────── */

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 18px;
    margin-bottom: 24px;
}

.stat-card {
    background: var(--bg-card);
    backdrop-filter: blur(20px);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 20px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.stat-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
}

.stat-card-cpu::before {
    background: linear-gradient(90deg, var(--cpu-start), var(--cpu-end));
}

.stat-card-ram::before {
    background: linear-gradient(90deg, var(--ram-start), var(--ram-end));
}

.stat-card-disk::before {
    background: linear-gradient(90deg, var(--disk-start), var(--disk-end));
}

.stat-card-net::before {
    background: linear-gradient(90deg, var(--net-start), var(--net-end));
}

.stat-card:hover {
    border-color: var(--border-glow);
    transform: translateY(-2px);
}

.stat-card-cpu:hover {
    box-shadow: var(--shadow-glow-cpu);
}

.stat-card-ram:hover {
    box-shadow: var(--shadow-glow-ram);
}

.stat-card-disk:hover {
    box-shadow: var(--shadow-glow-disk);
}

.stat-card-net:hover {
    box-shadow: var(--shadow-glow-net);
}

.stat-header {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 16px;
}

.stat-icon {
    width: 38px;
    height: 38px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-sm);
}

.stat-icon-cpu {
    background: rgba(99, 102, 241, 0.15);
    color: #818cf8;
}

.stat-icon-ram {
    background: rgba(168, 85, 247, 0.15);
    color: #c084fc;
}

.stat-icon-disk {
    background: rgba(249, 115, 22, 0.15);
    color: #fb923c;
}

.stat-icon-net {
    background: rgba(16, 185, 129, 0.15);
    color: #34d399;
}

.stat-label {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* ─── Gauge ──────────────────────────────────────────────────────────────── */

.stat-gauge-wrapper {
    display: flex;
    justify-content: center;
    margin-bottom: 16px;
}

.stat-gauge {
    position: relative;
    width: 110px;
    height: 110px;
}

.stat-gauge svg {
    transform: rotate(-90deg);
    width: 100%;
    height: 100%;
}

.gauge-bg {
    fill: none;
    stroke: rgba(0, 0, 0, 0.05);
    stroke-width: 8;
}

.gauge-fill {
    fill: none;
    stroke-width: 8;
    stroke-linecap: round;
    stroke-dasharray: 326.73;
    stroke-dashoffset: 326.73;
    transition: stroke-dashoffset 1s cubic-bezier(0.4, 0, 0.2, 1);
}

.gauge-fill-cpu {
    stroke: url(#cpuGrad);
}

.gauge-fill-ram {
    stroke: url(#ramGrad);
}

.gauge-fill-disk {
    stroke: url(#diskGrad);
}

.gauge-value {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1px;
}

.gauge-number {
    font-size: 1.8rem;
    font-weight: 700;
    line-height: 1;
}

.gauge-unit {
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-muted);
    margin-top: 4px;
}

/* ─── Network stats (no gauge) ───────────────────────────────────────────── */

.net-stats {
    display: flex;
    flex-direction: column;
    gap: 12px;
    padding: 10px 0;
    width: 100%;
}

.net-stat {
    display: flex;
    align-items: center;
    gap: 10px;
}

.net-arrow {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-sm);
    font-size: 1.1rem;
    font-weight: 700;
}

.net-arrow-up {
    background: rgba(16, 185, 129, 0.1);
    color: #059669;
}

.net-arrow-down {
    background: rgba(6, 182, 212, 0.1);
    color: #0891b2;
}

.net-value {
    font-size: 1.1rem;
    font-weight: 700;
    display: block;
}

.net-label {
    font-size: 0.72rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

/* ─── Stat Details ───────────────────────────────────────────────────────── */

.stat-details {
    display: flex;
    flex-direction: column;
    gap: 6px;
    border-top: 1px solid var(--border-color);
    padding-top: 12px;
}

.stat-detail {
    display: flex;
    justify-content: space-between;
    font-size: 0.78rem;
}

.stat-detail span:first-child {
    color: var(--text-muted);
}

.stat-detail span:last-child {
    color: var(--text-secondary);
    font-weight: 500;
}

/* ─── Range Selector ─────────────────────────────────────────────────────── */

.range-section {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 24px;
    flex-wrap: wrap;
    gap: 12px;
}

.range-buttons {
    display: flex;
    gap: 6px;
    padding: 4px;
    background: var(--bg-card);
    backdrop-filter: blur(20px);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
}

.range-btn {
    padding: 8px 18px;
    border: none;
    background: transparent;
    color: var(--text-muted);
    font-family: 'Inter', sans-serif;
    font-size: 0.82rem;
    font-weight: 500;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all 0.25s ease;
}

.range-btn:hover {
    color: var(--text-primary);
    background: rgba(0, 0, 0, 0.04);
}

.range-btn.active {
    background: linear-gradient(135deg, var(--cpu-start), var(--ram-start));
    color: white;
    box-shadow: 0 2px 12px rgba(99, 102, 241, 0.35);
}

.refresh-info {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.75rem;
    color: var(--text-muted);
}

.refresh-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--net-start);
    animation: pulse 2s ease-in-out infinite;
}

/* ─── Charts Grid ────────────────────────────────────────────────────────── */

.charts-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 18px;
    margin-bottom: 28px;
}

.chart-card {
    background: var(--bg-card);
    backdrop-filter: blur(20px);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 20px;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.chart-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
}

.chart-card-cpu::before {
    background: linear-gradient(90deg, var(--cpu-start), var(--cpu-end));
}

.chart-card-ram::before {
    background: linear-gradient(90deg, var(--ram-start), var(--ram-end));
}

.chart-card-disk::before {
    background: linear-gradient(90deg, var(--disk-start), var(--disk-end));
}

.chart-card-net::before {
    background: linear-gradient(90deg, var(--net-start), var(--net-end));
}

.chart-card:hover {
    border-color: var(--border-glow);
}

.chart-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 16px;
}

.chart-header h3 {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-primary);
}

.chart-badge {
    padding: 3px 10px;
    border-radius: 100px;
    font-size: 0.72rem;
    font-weight: 600;
}

.chart-badge-cpu {
    background: rgba(99, 102, 241, 0.1);
    color: #4f46e5;
}

.chart-badge-ram {
    background: rgba(168, 85, 247, 0.1);
    color: #9333ea;
}

.chart-badge-disk {
    background: rgba(249, 115, 22, 0.1);
    color: #ea580c;
}

.chart-badge-net {
    background: rgba(16, 185, 129, 0.1);
    color: #059669;
}

.chart-wrapper {
    position: relative;
    height: 240px;
}

.chart-wrapper canvas {
    width: 100% !important;
    height: 100% !important;
}

/* ─── Footer ─────────────────────────────────────────────────────────────── */

.footer {
    text-align: center;
    padding: 16px 0;
    color: var(--text-muted);
    font-size: 0.75rem;
    border-top: 1px solid var(--border-color);
}

/* ─── SVG Gradient Definitions (hidden) ──────────────────────────────────── */
/* Added via JS */

/* ─── Responsive ─────────────────────────────────────────────────────────── */

@media (max-width: 1200px) {
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .container {
        padding: 16px 14px 32px;
    }

    .header {
        flex-direction: column;
        gap: 12px;
        text-align: center;
    }

    .header-left {
        flex-direction: column;
    }

    .stats-grid {
        grid-template-columns: 1fr;
    }

    .charts-grid {
        grid-template-columns: 1fr;
    }

    .range-section {
        flex-direction: column;
        align-items: stretch;
    }

    .range-buttons {
        flex-wrap: wrap;
        justify-content: center;
    }

    .range-btn {
        padding: 8px 14px;
        font-size: 0.78rem;
    }
}

/* ─── Loading Animation ──────────────────────────────────────────────────── */

@keyframes shimmer {
    0% {
        background-position: -200% 0;
    }

    100% {
        background-position: 200% 0;
    }
}

.loading {
    background: linear-gradient(90deg,
            var(--bg-card) 25%,
            rgba(255, 255, 255, 0.05) 50%,
            var(--bg-card) 75%);
    background-size: 200% 100%;
    animation: shimmer 1.5s ease-in-out infinite;
}

/* ─── Smooth Appearance ──────────────────────────────────────────────────── */

.stat-card,
.chart-card {
    animation: fadeUp 0.6s cubic-bezier(0.4, 0, 0.2, 1) both;
}

.stat-card:nth-child(1),
.chart-card:nth-child(1) {
    animation-delay: 0.05s;
}

.stat-card:nth-child(2),
.chart-card:nth-child(2) {
    animation-delay: 0.1s;
}

.stat-card:nth-child(3),
.chart-card:nth-child(3) {
    animation-delay: 0.15s;
}

.stat-card:nth-child(4),
.chart-card:nth-child(4) {
    animation-delay: 0.2s;
}

@keyframes fadeUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}