/* =========================================================
   Internet Infrastructure Explorer
   ========================================================= */

.internet-infrastructure-widget {
    margin: 1.5rem 0;
    padding: 1.25rem;
    border: 1px solid #e2e8f0;
    border-radius: 24px;
    background: #ffffff;
    box-shadow: 0 14px 36px rgba(15, 23, 42, 0.07);
}

.internet-widget-controls {
    display: grid;
    gap: 1rem;
    margin-bottom: 1rem;
}

.internet-control-group {
    display: grid;
    gap: 0.55rem;
}

.internet-control-group .control-label {
    color: #475569;
    font-size: 0.84rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

.internet-button-row,
.internet-action-row {
    display: flex;
    flex-wrap: wrap;
    gap: 0.55rem;
}

.internet-access-btn,
.internet-view-btn {
    appearance: none;
    border: 1px solid #cbd5e1;
    background: #ffffff;
    color: #334155;
    border-radius: 999px;
    padding: 0.55rem 0.9rem;
    font-size: 0.9rem;
    font-weight: 650;
    cursor: pointer;
    transition: all 0.2s ease;
}

.internet-access-btn:hover,
.internet-view-btn:hover {
    border-color: #0f172a;
    color: #0f172a;
    transform: translateY(-1px);
}

.internet-access-btn.active,
.internet-view-btn.active {
    background: #0f172a;
    border-color: #0f172a;
    color: #ffffff;
}

.internet-secondary-btn {
    background: transparent;
    color: #334155;
    border: 1px solid #cbd5e1;
}

.internet-secondary-btn:hover {
    background: #f8fafc;
    border-color: #94a3b8;
    color: #0f172a;
}

.internet-visual-card {
    margin-top: 1rem;
    border-radius: 22px;
    border: 1px solid #e2e8f0;
    background:
        radial-gradient(circle at top left, rgba(59, 130, 246, 0.10), transparent 34%),
        radial-gradient(circle at bottom right, rgba(16, 185, 129, 0.10), transparent 34%),
        #f8fafc;
    overflow: hidden;
}

.internet-infrastructure-svg {
    display: block;
    width: 100%;
    height: auto;
    min-height: 420px;
}

.internet-link {
    stroke: #94a3b8;
    stroke-width: 5;
    stroke-linecap: round;
}

.internet-link.soft {
    stroke-dasharray: 8 8;
}

.internet-link.active {
    stroke: #2563eb;
}

.internet-route-link {
    stroke: #2563eb;
    stroke-width: 6;
    stroke-linecap: round;
    fill: none;
    stroke-dasharray: 16 12;
    animation: internetRouteDash 0.7s linear infinite;
}

@keyframes internetRouteDash {
    to {
        stroke-dashoffset: -28;
    }
}

.internet-node-shape {
    stroke-width: 3;
}

.internet-user-node {
    fill: #dbeafe;
    stroke: #2563eb;
}

.internet-provider-node {
    fill: #dcfce7;
    stroke: #16a34a;
}

.internet-router-node {
    fill: #fef3c7;
    stroke: #d97706;
}

.internet-neutral-node {
    fill: #ffffff;
    stroke: #64748b;
}

.internet-node-label {
    fill: #0f172a;
    font-size: 16px;
    font-weight: 700;
    text-anchor: middle;
}

.internet-node-subtitle {
    fill: #475569;
    font-size: 13px;
    font-weight: 600;
    text-anchor: middle;
}

.internet-request-dot {
    fill: #2563eb;
    filter: drop-shadow(0 4px 10px rgba(37, 99, 235, 0.35));
}

.internet-explanation-panel,
.internet-step-panel {
    margin-top: 1rem;
    padding: 1rem 1.1rem;
    border-radius: 18px;
    background: #f8fafc;
    border: 1px solid #e2e8f0;
}

.internet-explanation-panel h3,
.internet-step-panel h3 {
    margin-top: 0;
    margin-bottom: 0.45rem;
}

.internet-status {
    margin-bottom: 0;
    color: #1d4ed8;
    font-weight: 700;
}

.internet-step-panel ol {
    margin: 0.55rem 0 0;
    padding-left: 1.25rem;
}

.internet-step-panel li {
    margin-bottom: 0.35rem;
    color: #334155;
}

.internet-step-panel li.active {
    color: #1d4ed8;
    font-weight: 700;
}

.internet-legend {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    margin-top: 1rem;
    color: #475569;
    font-size: 0.9rem;
    font-weight: 600;
}

.internet-legend span {
    display: inline-flex;
    align-items: center;
    gap: 0.42rem;
}

.internet-legend-dot {
    width: 13px;
    height: 13px;
    border-radius: 999px;
    display: inline-block;
    border: 2px solid;
}

.internet-legend-dot.user-dot {
    background: #dbeafe;
    border-color: #2563eb;
}

.internet-legend-dot.isp-dot {
    background: #dcfce7;
    border-color: #16a34a;
}

.internet-legend-dot.router-dot {
    background: #fef3c7;
    border-color: #d97706;
}

.internet-legend-line {
    width: 24px;
    height: 0;
    border-top: 4px solid #94a3b8;
    border-radius: 999px;
    display: inline-block;
}

@media (max-width: 720px) {
    .internet-infrastructure-widget {
        padding: 1rem;
    }

    .internet-infrastructure-svg {
        min-height: 340px;
    }

    .internet-node-label {
        font-size: 14px;
    }

    .internet-node-subtitle {
        font-size: 11px;
    }
}