/* ============================================================ */
/* FLAXON PLAYGROUND — "ROUTE MAP" LOADER                        */
/* An animated circuit-style path traces itself from the first   */
/* route to the last, lighting up each stop as it's "registered",*/
/* while a terminal ticker and progress bar play alongside it.   */
/* ============================================================ */

:root {
    --loader-bg-0: #05080f;
    --loader-bg-1: #0b1220;
    --loader-bg-2: #14233b;
    --loader-cyan: #22d3ee;
    --loader-blue: #60a5fa;
    --loader-amber: #fbbf24;
    --loader-text: #e2e8f0;
    --loader-muted: #64748b;
    --loader-line: rgba(148, 163, 184, .12);
}

html.loader-active,
html.loader-active body {
    overflow: hidden;
}

#loader.loader-overlay {
    position: fixed;
    inset: 0;
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
    background:
        radial-gradient(circle at 12% 15%, rgba(34, 211, 238, .16), transparent 32rem),
        radial-gradient(circle at 88% 82%, rgba(96, 165, 250, .18), transparent 30rem),
        linear-gradient(180deg, var(--loader-bg-0), var(--loader-bg-1) 55%, var(--loader-bg-2));
    transition: opacity .9s ease, visibility .9s ease;
}

#loader.loader-overlay::before {
    content: "";
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(var(--loader-line) 1px, transparent 1px),
        linear-gradient(90deg, var(--loader-line) 1px, transparent 1px);
    background-size: 42px 42px;
    -webkit-mask-image: radial-gradient(circle at 50% 45%, black, transparent 72%);
    mask-image: radial-gradient(circle at 50% 45%, black, transparent 72%);
    animation: loader-grid-pan 16s linear infinite;
}

@keyframes loader-grid-pan {
    from { background-position: 0 0, 0 0; }
    to   { background-position: 84px 84px, 84px 84px; }
}

#loader.loader-overlay.is-hidden {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
}

.loader-inner {
    position: relative;
    z-index: 1;
    width: min(680px, 92vw);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1.15rem;
}

/* ---- wordmark ---- */
.loader-mark {
    display: inline-flex;
    align-items: baseline;
    gap: .35rem;
    font: 800 1.6rem/1 ui-monospace, SFMono-Regular, Menlo, monospace;
    letter-spacing: .01em;
    color: var(--loader-text);
    animation: loader-mark-glow 2.4s ease-in-out infinite;
}
.loader-mark-bracket { color: var(--loader-cyan); font-weight: 700; }
.loader-mark-text {
    background: linear-gradient(135deg, var(--loader-blue), var(--loader-cyan));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}
@keyframes loader-mark-glow {
    0%, 100% { filter: drop-shadow(0 0 0 rgba(34, 211, 238, 0)); }
    50%      { filter: drop-shadow(0 0 14px rgba(34, 211, 238, .35)); }
}

/* ---- route map svg ---- */
.loader-route {
    width: 100%;
    height: auto;
    overflow: visible;
}
.loader-route-track {
    fill: none;
    stroke: var(--loader-line);
    stroke-width: 2.5;
    stroke-linecap: round;
    stroke-linejoin: round;
}
.loader-route-path {
    fill: none;
    stroke: url(#loader-route-gradient);
    stroke-width: 2.5;
    stroke-linecap: round;
    stroke-linejoin: round;
}
.loader-node {
    fill: var(--loader-bg-1);
    stroke: var(--loader-muted);
    stroke-width: 2;
    transition: fill .35s ease, stroke .35s ease, r .35s ease;
}
.loader-node.is-active {
    fill: var(--loader-cyan);
    stroke: var(--loader-cyan);
    r: 8;
    filter: drop-shadow(0 0 8px rgba(34, 211, 238, .8));
}
.loader-pulse {
    fill: var(--loader-amber);
    filter: drop-shadow(0 0 10px rgba(251, 191, 36, .85));
}

/* ---- route labels ---- */
.loader-labels {
    position: relative;
    width: 100%;
    height: 1.3rem;
    margin-top: -.5rem;
}
.loader-label {
    position: absolute;
    top: 0;
    transform: translateX(-50%);
    white-space: nowrap;
    font: 600 .68rem/1 ui-monospace, SFMono-Regular, Menlo, monospace;
    color: var(--loader-muted);
    opacity: .45;
    transition: opacity .35s ease, color .35s ease;
}
.loader-label.is-active {
    opacity: 1;
    color: var(--loader-cyan);
}

/* ---- terminal ticker ---- */
.loader-terminal {
    width: 100%;
    box-sizing: border-box;
    border: 1px solid rgba(148, 163, 184, .18);
    border-radius: .65rem;
    background: rgba(15, 23, 42, .7);
    padding: .7rem .9rem;
    font: .8rem/1.5 ui-monospace, SFMono-Regular, Menlo, monospace;
    color: var(--loader-text);
    text-align: left;
    min-height: 1.4rem;
    display: flex;
    align-items: center;
    gap: .5rem;
}
.loader-terminal-prompt { color: var(--loader-cyan); font-weight: 700; }
.loader-terminal-text { color: var(--loader-text); }
.loader-terminal-cursor {
    display: inline-block;
    width: 6px;
    height: 1em;
    background: var(--loader-blue);
    animation: loader-blink .8s step-end infinite;
}
@keyframes loader-blink { 50% { opacity: 0; } }

/* ---- progress ---- */
.loader-progress-track {
    width: 100%;
    height: 4px;
    border-radius: 999px;
    background: rgba(148, 163, 184, .15);
    overflow: hidden;
}
.loader-progress-bar {
    height: 100%;
    width: 0%;
    border-radius: 999px;
    background: linear-gradient(90deg, var(--loader-blue), var(--loader-cyan));
    box-shadow: 0 0 10px rgba(34, 211, 238, .6);
}
.loader-progress-percent {
    align-self: flex-end;
    font: 700 .72rem/1 ui-monospace, SFMono-Regular, Menlo, monospace;
    color: var(--loader-muted);
    margin-top: -.55rem;
}

@media (max-width: 640px) {
    .loader-label { display: none; }
    .loader-labels { height: 0; margin-top: 0; }
    .loader-mark { font-size: 1.3rem; }
}

@media (prefers-reduced-motion: reduce) {
    #loader.loader-overlay::before,
    .loader-mark {
        animation: none !important;
    }
}