:root {
    --blood: #8b0000;
    --blood-bright: #c81e1e;
    --dark-blood: #470000;
    --bone: #e6d3a7;
    --bone-dim: #a9976f;
    --void: #000;
    --ok: #2f7a3d;
    --ok-bright: #6fbf73;
    --bad: #b30000;
    --panel-bg: rgba(10, 2, 2, 0.9);
}
* { margin: 0; padding: 0; box-sizing: border-box; }

body {
    background: radial-gradient(circle at center, #180000 0%, #000 80%);
    font-family: 'Cinzel', serif;
    color: var(--bone);
    min-height: 100vh;
    padding: 2rem 1rem;
}

.platform {
    width: 100%; max-width: 1000px; margin: 0 auto;
    background: var(--panel-bg);
    backdrop-filter: blur(15px);
    border: 1px solid rgba(139, 0, 0, .6);
    box-shadow: 0 0 50px rgba(139, 0, 0, .35);
    border-radius: 12px;
    padding: 1.6rem;
    display: flex; flex-direction: column; gap: 1.1rem;
}

.platform-head { text-align: center; }
.platform-head h1 {
    font-family: 'UnifrakturMaguntia', cursive; font-size: 2.6rem;
    color: var(--blood); text-shadow: 0 0 18px var(--blood); letter-spacing: 4px;
}
.tagline {
    font-family: 'Orbitron', sans-serif; font-size: .7rem; letter-spacing: 3px;
    color: var(--bone-dim); text-transform: uppercase; margin-top: -.3rem;
}

/* ---------- agent + rank bar ---------- */
.agent-bar {
    display: flex; gap: 1.5rem; align-items: center; flex-wrap: wrap;
    background: rgba(0,0,0,.5); padding: 1rem; border-radius: 8px;
}
.agent-pick { display: flex; flex-direction: column; gap: .3rem; font-family: 'Orbitron', sans-serif; font-size: .7rem; }
.agent-pick label { color: var(--bone-dim); letter-spacing: 1px; }
.agent-pick select {
    background: #111; color: var(--bone); border: 1px solid var(--dark-blood);
    font-family: 'Orbitron', sans-serif; padding: .4rem .6rem; border-radius: 4px; min-width: 140px;
}
.rank-block { flex: 1; min-width: 220px; }
.rank-line { display: flex; justify-content: space-between; align-items: baseline; font-family: 'Orbitron', sans-serif; }
.rank-name { font-size: 1.2rem; color: var(--bone); letter-spacing: 2px; text-shadow: 0 0 10px var(--blood); }
.badge-tally { font-size: .85rem; color: var(--bone-dim); }
.badge-tally i { color: var(--blood-bright); }
.rank-bar { height: 8px; background: #222; border-radius: 4px; overflow: hidden; margin: .5rem 0 .3rem; }
.rank-fill { height: 100%; background: linear-gradient(90deg, var(--dark-blood), var(--blood-bright)); width: 0%; transition: width .5s ease; }
.rank-progress-label { font-family: 'Orbitron', sans-serif; font-size: .62rem; color: var(--bone-dim); letter-spacing: 1px; }

/* ---------- tabs ---------- */
.nav-tabs { display: flex; justify-content: center; gap: .5rem; flex-wrap: wrap; }
.tab-btn {
    background: #111; border: 2px solid var(--blood); color: var(--bone);
    padding: .55rem 1.1rem; font-family: 'Orbitron', sans-serif; cursor: pointer;
    border-radius: 4px; font-size: .78rem; transition: .25s;
}
.tab-btn i { margin-right: .4rem; }
.tab-btn:hover, .tab-btn.active { background: rgba(139,0,0,.3); border-color: var(--blood-bright); box-shadow: 0 0 10px var(--blood); }
.tab-content { display: none; }
.tab-content.active { display: block; }

.section-note {
    font-family: 'Orbitron', sans-serif; font-size: .68rem; line-height: 1.6;
    color: var(--bone-dim); background: rgba(0,0,0,.35); border-left: 3px solid var(--blood);
    padding: .7rem .9rem; border-radius: 4px; margin-bottom: 1rem;
}

/* ---------- buttons ---------- */
.primary-btn {
    background: rgba(139,0,0,.2); color: var(--bone); border: 1px solid var(--blood);
    padding: .55rem .5rem; border-radius: 5px; font-family: 'Orbitron', sans-serif;
    font-size: .74rem; cursor: pointer; transition: .2s; letter-spacing: 1px;
}
.primary-btn:hover:not(:disabled) { background: rgba(139,0,0,.4); box-shadow: 0 0 12px var(--blood); }
.primary-btn:disabled { opacity: .4; cursor: not-allowed; }
.ghost-btn {
    background: none; color: var(--bone-dim); border: 1px solid var(--dark-blood);
    padding: .5rem .8rem; border-radius: 5px; font-family: 'Orbitron', sans-serif;
    font-size: .72rem; cursor: pointer; transition: .2s;
}
.ghost-btn:hover { color: var(--bone); border-color: var(--blood); }

/* ---------- lessons area (stacks track sections) ---------- */
.lesson-tree { display: flex; flex-direction: column; gap: 1.5rem; }

/* ---------- CTF arena ---------- */
.ctf-grid { display: flex; flex-direction: column; gap: 1rem; }
.ctf-summary {
    display: flex; gap: 1rem; align-items: center; justify-content: space-between; flex-wrap: wrap;
    font-family: 'Orbitron', sans-serif; font-size: .72rem; color: var(--bone-dim);
    background: rgba(0,0,0,.35); border: 1px solid var(--dark-blood); border-radius: 8px;
    padding: .6rem .9rem;
}
.ctf-arena-label { color: var(--bone); letter-spacing: 2px; text-transform: uppercase; }
.ctf-arena-label i { color: var(--blood-bright); margin-right: .4rem; }
.ctf-summary-stats { display: flex; gap: 1.4rem; align-items: center; }
.ctf-summary-stats i { color: var(--blood-bright); margin-right: .3rem; }
.ctf-list {
    display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 1rem;
    align-items: stretch;                          /* rows share a height */
}

.ctf-card {
    position: relative; display: flex; flex-direction: column; gap: .8rem; height: 100%;
    background: linear-gradient(160deg, #120303, #080202);
    border: 1px solid var(--blood); border-radius: 10px; padding: 1.1rem;
    box-shadow: 0 0 22px rgba(139,0,0,.18);
    transition: border-color .25s, box-shadow .25s, transform .15s;
}
.ctf-card:hover { border-color: var(--blood-bright); box-shadow: 0 0 30px rgba(139,0,0,.4); transform: translateY(-3px); }
.ctf-card.solved { border-color: var(--ok); box-shadow: 0 0 22px rgba(47,122,61,.25); }
.ctf-card.solved::after {
    content: ''; position: absolute; inset: 0; border-radius: 10px; pointer-events: none;
    background: linear-gradient(160deg, rgba(47,122,61,.08), transparent 60%);
}

.ctf-head { display: flex; align-items: flex-start; justify-content: space-between; gap: .8rem; }
.ctf-head h3 { font-size: 1.1rem; color: var(--bone); letter-spacing: .5px; margin-bottom: .5rem; }
.ctf-chips { display: flex; align-items: center; gap: .5rem; flex-wrap: wrap; }
.ctf-chip {
    display: inline-flex; align-items: center; height: 20px;
    font-family: 'Orbitron', sans-serif; font-size: .56rem; letter-spacing: 1px; text-transform: uppercase;
    padding: 0 .5rem; border-radius: 999px; border: 1px solid var(--dark-blood); color: var(--bone-dim);
}
.ctf-chip.diff { gap: 3px; }
.pip { width: 6px; height: 6px; border-radius: 50%; background: #3a1414; display: inline-block; }
.pip.on { background: var(--blood-bright); box-shadow: 0 0 5px var(--blood); }
.ctf-points {
    flex: 0 0 auto; text-align: center; line-height: 1;
    border: 1px solid var(--blood); border-radius: 8px; padding: .4rem .6rem; background: rgba(139,0,0,.12);
}
.ctf-points .n { display: block; font-family: 'Orbitron', sans-serif; font-size: 1.3rem; font-weight: 700; color: var(--bone); }
.ctf-points .u { font-family: 'Orbitron', sans-serif; font-size: .5rem; letter-spacing: 1px; color: var(--bone-dim); text-transform: uppercase; }

.ctf-brief {
    flex: 1 1 auto;                                /* fills space so the action row sinks to the bottom */
    font-family: 'Courier New', monospace; font-size: .74rem; line-height: 1.6; color: #c9b98f;
    background: #050505; border: 1px solid #1a1a1a; border-left: 3px solid var(--blood);
    border-radius: 4px; padding: .7rem .8rem; white-space: pre-wrap; word-break: break-word; margin: 0;
}

.ctf-flag-form { display: flex; gap: .5rem; align-items: stretch; }
.ctf-flag-input {
    flex: 1; display: flex; align-items: center; gap: .5rem;
    background: #0c0c0c; border: 1px solid var(--dark-blood); border-radius: 6px; padding: 0 .7rem;
}
.ctf-flag-input:focus-within { border-color: var(--blood); box-shadow: 0 0 8px rgba(139,0,0,.4); }
.ctf-flag-input i { color: var(--blood-bright); font-size: .8rem; }
.ctf-flag-input input {
    flex: 1; background: none; border: none; outline: none; color: var(--bone);
    font-family: 'Courier New', monospace; font-size: .82rem; padding: .55rem 0;
}
.ctf-flag-form .primary-btn { white-space: nowrap; }
.ctf-fb { font-family: 'Orbitron', sans-serif; font-size: .68rem; min-height: .9rem; color: var(--bone-dim); }
.ctf-fb:empty { min-height: 0; }
.ctf-fb.bad { color: var(--bad); }

.ctf-solved-banner {
    display: flex; align-items: center; justify-content: center; gap: .5rem;
    font-family: 'Orbitron', sans-serif; font-size: .74rem; letter-spacing: 1px; color: var(--ok-bright);
    background: rgba(47,122,61,.12); border: 1px solid rgba(47,122,61,.4); border-radius: 6px; padding: .6rem .8rem;
}

/* filter bar */
.ctf-filter-bar { display: flex; flex-wrap: wrap; gap: .5rem; }
.ctf-filter {
    background: #111; border: 1px solid var(--dark-blood); color: var(--bone-dim);
    font-family: 'Orbitron', sans-serif; font-size: .66rem; letter-spacing: 1px; text-transform: uppercase;
    padding: .4rem .8rem; border-radius: 999px; cursor: pointer; transition: .2s;
}
.ctf-filter:hover { color: var(--bone); border-color: var(--blood); }
.ctf-filter.active { background: rgba(139,0,0,.3); border-color: var(--blood-bright); color: var(--bone); box-shadow: 0 0 10px rgba(139,0,0,.4); }
.ctf-empty { font-family: 'Orbitron', sans-serif; font-size: .74rem; color: var(--bone-dim); padding: 1.4rem; text-align: center; grid-column: 1 / -1; }

/* hints */
.ctf-hints { display: flex; flex-direction: column; gap: .5rem; }
.ctf-hint {
    font-family: 'Orbitron', sans-serif; font-size: .68rem; line-height: 1.5; color: #c4a44a;
    background: rgba(196,164,74,.08); border-left: 3px solid #c4a44a; border-radius: 4px; padding: .5rem .7rem;
}
.ctf-hint i { margin-right: .4rem; }
.ctf-hint-btn {
    align-self: flex-start; background: none; border: 1px dashed rgba(196,164,74,.5); color: #c4a44a;
    font-family: 'Orbitron', sans-serif; font-size: .62rem; letter-spacing: 1px; padding: .35rem .7rem;
    border-radius: 5px; cursor: pointer; transition: .2s;
}
.ctf-hint-btn:hover { background: rgba(196,164,74,.12); border-style: solid; }

/* capture + wrong-answer animations */
@keyframes ctfCapture {
    0%   { box-shadow: 0 0 22px rgba(47,122,61,.25); }
    30%  { box-shadow: 0 0 45px rgba(47,122,61,.9); transform: translateY(-4px) scale(1.02); border-color: var(--ok-bright); }
    100% { box-shadow: 0 0 22px rgba(47,122,61,.25); transform: none; }
}
.ctf-card.just-solved { animation: ctfCapture .85s ease-out; border-color: var(--ok); }
@keyframes ctfShake {
    0%,100% { transform: translateX(0); }
    20% { transform: translateX(-6px); } 40% { transform: translateX(5px); }
    60% { transform: translateX(-4px); } 80% { transform: translateX(3px); }
}
.ctf-card.shake { animation: ctfShake .4s ease-in-out; }
@media (prefers-reduced-motion: reduce) {
    .ctf-card.just-solved, .ctf-card.shake { animation: none; }
}

/* ---------- lesson player overlay ---------- */
.lesson-player {
    position: fixed; inset: 0; z-index: 500;
    display: none; pointer-events: none;   /* non-blocking layer, no backdrop */
}
.lesson-player.open { display: block; }
.lp-panel {
    position: absolute; left: 50%; top: 6vh; transform: translateX(-50%);
    width: min(640px, calc(100vw - 2rem)); max-height: 86vh; overflow: hidden;
    background: #0a0303; border: 1px solid var(--blood); border-radius: 10px;
    box-shadow: 0 0 60px rgba(139,0,0,.55), 0 20px 60px rgba(0,0,0,.7); padding: 1.4rem;
    display: flex; flex-direction: column; gap: .9rem;
    pointer-events: auto;                  /* only the panel itself is interactive */
}
.lp-head, .lp-dots, .lp-feedback, .lp-actions { flex: 0 0 auto; }
.lp-head {
    display: flex; justify-content: space-between; align-items: flex-start;
    cursor: grab; user-select: none; position: relative;
    margin: -1.4rem -1.4rem .2rem; padding: 1rem 1.4rem .8rem;
    border-bottom: 1px solid rgba(139,0,0,.35);
}
.lp-head:active { cursor: grabbing; }
.lp-head::before {
    content: '\2237'; position: absolute; left: 50%; top: .3rem; transform: translateX(-50%);
    color: var(--bone-dim); font-size: .8rem; opacity: .5; pointer-events: none; letter-spacing: 2px;
}
.lp-head h2 { font-size: 1.4rem; color: var(--bone); letter-spacing: 1px; }
.lp-step-count { font-family: 'Orbitron', sans-serif; font-size: .62rem; color: var(--bone-dim); margin-top: .2rem; letter-spacing: 1px; }
.lp-close { background: none; border: none; color: var(--bone-dim); font-size: 1.2rem; cursor: pointer; transition: .2s; }
.lp-close:hover { color: var(--blood-bright); }
.lp-dots { display: flex; gap: .4rem; }
.lp-dot { width: 100%; height: 4px; border-radius: 2px; background: #333; transition: background .3s; }
.lp-dot.past { background: var(--ok); }
.lp-dot.current { background: var(--blood-bright); }
.lp-body { flex: 1 1 auto; overflow-y: auto; min-height: 90px; padding-right: .4rem; }
.lp-body::-webkit-scrollbar { width: 8px; }
.lp-body::-webkit-scrollbar-thumb { background: var(--dark-blood); border-radius: 4px; }
.lp-body::-webkit-scrollbar-track { background: transparent; }
.lp-step-title { font-family: 'Orbitron', sans-serif; font-size: .8rem; color: var(--blood-bright); letter-spacing: 1px; margin-bottom: .7rem; text-transform: uppercase; }
.lp-teach {
    font-family: 'Orbitron', sans-serif; font-size: .8rem; line-height: 1.7; color: #d8c9a0;
    white-space: pre-wrap; background: rgba(0,0,0,.4); border-left: 3px solid var(--blood);
    padding: .9rem; border-radius: 4px;
}
.lp-question { font-family: 'Orbitron', sans-serif; font-size: .85rem; line-height: 1.6; color: var(--bone); margin-bottom: .8rem; }
.lp-options { display: flex; flex-direction: column; gap: .5rem; }
.lp-option {
    background: #111; padding: .7rem .9rem; border: 1px solid #333; border-radius: 6px;
    cursor: pointer; transition: .2s; font-family: 'Orbitron', sans-serif; font-size: .78rem;
}
.lp-option:hover { border-color: var(--blood); background: #1a0a0a; }
.lp-option.selected { border-color: var(--blood-bright); background: rgba(139,0,0,.3); }
.lp-explain {
    width: 100%; min-height: 90px; background: #111; color: var(--bone);
    border: 1px solid var(--dark-blood); border-radius: 6px; padding: .7rem;
    font-family: 'Orbitron', sans-serif; font-size: .78rem; resize: vertical;
}
.lp-feedback { font-family: 'Orbitron', sans-serif; font-size: .74rem; min-height: 1.1rem; line-height: 1.5; }
.lp-feedback:empty { min-height: 0; }
.lp-feedback.good { color: var(--ok-bright); }
.lp-feedback.bad  { color: var(--bad); }
.lp-feedback.hint { color: #c4a44a; }
.lp-actions {
    display: flex; justify-content: space-between; align-items: center; gap: .6rem;
    margin: .2rem -1.4rem -1.4rem; padding: 1rem 1.4rem;
    border-top: 1px solid rgba(139,0,0,.35); background: rgba(0,0,0,.25);
}

/* ---------- progress ---------- */
.progress-head { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 1rem; margin-bottom: 1rem; }
.progress-head h3 { font-size: 1.3rem; color: var(--bone); letter-spacing: 1px; }
.progress-stats { display: flex; gap: 1.5rem; }
.progress-stats > div { display: flex; flex-direction: column; align-items: center; font-family: 'Orbitron', sans-serif; }
.progress-stats .big { font-size: 1.6rem; color: var(--blood-bright); font-weight: 700; }
.progress-stats .lbl { font-size: .6rem; color: var(--bone-dim); letter-spacing: 1px; text-transform: uppercase; }
.block-title { font-family: 'Orbitron', sans-serif; font-size: .8rem; color: var(--bone); letter-spacing: 2px; text-transform: uppercase; margin: 1.2rem 0 .7rem; border-bottom: 1px solid var(--dark-blood); padding-bottom: .4rem; }
.muted { color: var(--bone-dim); font-family: 'Orbitron', sans-serif; font-size: .72rem; }

.badge-shelf { display: flex; flex-wrap: wrap; gap: .8rem; }
.badge-medal {
    width: 92px; background: #1a1a1a; border: 1px solid var(--blood); border-radius: 8px;
    padding: .8rem .4rem; text-align: center; display: flex; flex-direction: column; align-items: center; gap: .4rem;
}
.badge-medal i { font-size: 1.7rem; color: var(--blood-bright); }
.badge-medal span { font-family: 'Orbitron', sans-serif; font-size: .55rem; color: var(--bone-dim); line-height: 1.3; }

.skill-breakdown { display: flex; flex-direction: column; gap: .5rem; }
.skill-row { display: grid; grid-template-columns: 1fr 2fr auto; gap: .6rem; align-items: center; }
.skill-label { font-family: 'Orbitron', sans-serif; font-size: .7rem; color: var(--bone-dim); }
.skill-pct { font-family: 'Orbitron', sans-serif; font-size: .7rem; color: var(--bone); width: 40px; text-align: right; }
.mini-bar { height: 6px; background: rgba(255,255,255,.08); border-radius: 3px; overflow: hidden; }
.mini-bar-fill { height: 100%; background: linear-gradient(90deg, var(--dark-blood), var(--blood-bright)); width: 0%; transition: width .5s ease; }

.cert-block { margin-top: 1.4rem; background: rgba(0,0,0,.35); border: 1px solid var(--dark-blood); border-radius: 8px; padding: 1rem; }
.cert-block .primary-btn { margin-top: .6rem; }

/* ---------- toast ---------- */
.toast {
    position: fixed; bottom: 20px; left: 50%; transform: translateX(-50%);
    background: #1a0000; border: 1px solid var(--blood); color: var(--bone);
    padding: .7rem 1.1rem; border-radius: 6px; font-family: 'Orbitron', sans-serif;
    font-size: .75rem; z-index: 999; box-shadow: 0 0 22px rgba(139,0,0,.55); letter-spacing: 1px;
}

@media (max-width: 680px) {
    .platform { padding: 1rem; }
    .platform-head h1 { font-size: 2rem; }
    .progress-head { flex-direction: column; align-items: flex-start; }
    .profile-layout { grid-template-columns: 1fr; }
    .profile-preview { position: static; }
    /* tiers stack: level label sits above its lessons, spine hidden */
    .tier { grid-template-columns: 1fr; gap: .6rem; }
    .tier:not(:last-child) .tier-num::after { display: none; }
    .tier-label { padding-top: 0; }
}

/* ---------- top-bar avatar ---------- */
.top-avatar {
    width: 46px; height: 46px; border-radius: 50%; overflow: hidden; flex: 0 0 auto;
    border: 2px solid var(--blood); box-shadow: 0 0 12px rgba(139,0,0,.5);
    background: #1a0a0a; display: flex; align-items: center; justify-content: center;
}
.top-avatar img { width: 100%; height: 100%; object-fit: cover; }
.top-avatar span { font-family: 'Orbitron', sans-serif; font-size: 1.2rem; color: var(--blood-bright); font-weight: 700; }

/* ---------- profile tab ---------- */
.profile-layout { display: grid; grid-template-columns: 1fr 300px; gap: 1.4rem; align-items: start; }
.profile-editor { display: flex; flex-direction: column; }
.field-label {
    font-family: 'Orbitron', sans-serif; font-size: .68rem; color: var(--bone-dim);
    letter-spacing: 1px; text-transform: uppercase; margin: 1rem 0 .35rem;
}
.field-label:first-child { margin-top: 0; }
.text-field {
    background: #111; color: var(--bone); border: 1px solid var(--dark-blood);
    padding: .6rem .7rem; border-radius: 5px; font-family: 'Orbitron', sans-serif;
    font-size: .78rem; width: 100%; resize: vertical;
}
.text-field:focus { outline: none; border-color: var(--blood); box-shadow: 0 0 8px rgba(139,0,0,.4); }
.profile-editor .primary-btn { margin-top: 1.2rem; align-self: flex-start; }

.avatar-drop {
    border: 2px dashed rgba(139,0,0,.5); border-radius: 8px; padding: 1.4rem 1rem;
    text-align: center; cursor: pointer; transition: .2s; background: rgba(0,0,0,.3);
    display: flex; flex-direction: column; align-items: center; gap: .4rem;
}
.avatar-drop:hover, .avatar-drop.drag { border-color: var(--blood-bright); background: rgba(139,0,0,.12); }
.avatar-drop i { font-size: 1.6rem; color: var(--blood-bright); }
.avatar-drop span { font-family: 'Orbitron', sans-serif; font-size: .74rem; color: var(--bone); }
.avatar-drop small { font-family: 'Orbitron', sans-serif; font-size: .58rem; color: var(--bone-dim); }

/* live preview card */
.profile-preview { position: sticky; top: 1rem; }
.pp-card {
    background: linear-gradient(160deg, #140404, #0a0303);
    border: 1px solid var(--blood); border-radius: 12px; padding: 1.4rem 1.2rem;
    text-align: center; box-shadow: 0 0 26px rgba(139,0,0,.35); position: relative; overflow: hidden;
}
.pp-card::before {
    content: ''; position: absolute; top: 0; left: 0; right: 0; height: 60px;
    background: linear-gradient(180deg, rgba(139,0,0,.25), transparent);
}
.pp-avatar {
    width: 96px; height: 96px; border-radius: 50%; overflow: hidden; margin: 0 auto .8rem;
    border: 3px solid var(--blood); box-shadow: 0 0 18px rgba(139,0,0,.6);
    background: #1a0a0a; display: flex; align-items: center; justify-content: center; position: relative;
}
.pp-avatar img { width: 100%; height: 100%; object-fit: cover; }
.pp-avatar span { font-family: 'Orbitron', sans-serif; font-size: 2.4rem; color: var(--blood-bright); font-weight: 700; }
.pp-name { font-size: 1.3rem; color: var(--bone); letter-spacing: 1px; text-shadow: 0 0 10px var(--blood); }
.pp-tagline { font-family: 'Orbitron', sans-serif; font-size: .66rem; color: var(--bone-dim); margin-top: .25rem; letter-spacing: .5px; }
.pp-badges-row { display: flex; justify-content: center; gap: .5rem; margin: .8rem 0; flex-wrap: wrap; }
.pp-chip {
    font-family: 'Orbitron', sans-serif; font-size: .6rem; color: var(--bone);
    background: rgba(139,0,0,.2); border: 1px solid var(--dark-blood);
    padding: .25rem .55rem; border-radius: 999px; letter-spacing: .5px;
}
.pp-chip i { color: var(--blood-bright); }
.pp-bio {
    font-family: 'Orbitron', sans-serif; font-size: .7rem; line-height: 1.6; color: #d8c9a0;
    background: rgba(0,0,0,.35); border-left: 3px solid var(--blood); border-radius: 4px;
    padding: .7rem .8rem; margin: .8rem 0; text-align: left; white-space: pre-wrap; word-break: break-word;
}
.pp-id { font-family: 'Orbitron', monospace; font-size: .6rem; color: var(--bone-dim); letter-spacing: 1px; }

/* ---------- auth screen ---------- */
.auth-screen {
    position: fixed; inset: 0; z-index: 600;
    display: flex; align-items: center; justify-content: center; padding: 1rem;
    background: radial-gradient(circle at center, #180000 0%, #000 80%);
}
.auth-card {
    width: 100%; max-width: 380px;
    background: var(--panel-bg); border: 1px solid rgba(139,0,0,.6);
    box-shadow: 0 0 50px rgba(139,0,0,.35); border-radius: 12px;
    padding: 2rem 1.8rem; display: flex; flex-direction: column;
}
.auth-brand {
    text-align: center; font-family: 'UnifrakturMaguntia', cursive;
    font-size: 1.8rem; letter-spacing: 4px; color: var(--blood); text-shadow: 0 0 16px var(--blood);
}
.auth-card h2 {
    text-align: center; font-family: 'Cinzel', serif; font-size: 1.5rem;
    color: var(--bone); letter-spacing: 2px; margin: .6rem 0 .3rem;
}
.auth-note { font-family: 'Orbitron', sans-serif; font-size: .6rem; line-height: 1.6; color: var(--bone-dim); text-align: center; margin-bottom: 1rem; }
.auth-card .field-label { margin-top: .8rem; }
.auth-error { font-family: 'Orbitron', sans-serif; font-size: .68rem; color: var(--bad); min-height: 1rem; margin: .5rem 0; }
.auth-submit { margin-top: .4rem; width: 100%; text-align: center; padding: .7rem; }
.auth-switch { font-family: 'Orbitron', sans-serif; font-size: .68rem; color: var(--bone-dim); text-align: center; margin-top: 1rem; }
.link-btn { background: none; border: none; color: var(--blood-bright); cursor: pointer; font-family: 'Orbitron', sans-serif; font-size: .68rem; text-decoration: underline; padding: 0; }

/* ---------- identity bar ---------- */
.whoami { font-family: 'Orbitron', sans-serif; font-size: .95rem; color: var(--bone); letter-spacing: 1px; text-shadow: 0 0 8px var(--blood); }
.logout-btn { margin-top: .4rem; font-size: .62rem; padding: .35rem .6rem; }
.agent-pick label { font-family: 'Orbitron', sans-serif; font-size: .6rem; color: var(--bone-dim); letter-spacing: 1px; text-transform: uppercase; }
.text-field:disabled { opacity: .6; cursor: not-allowed; }

/* ---------- skill tree ---------- */
.track-section { margin-bottom: 2rem; position: relative; }
.track-head { display: flex; align-items: center; gap: .9rem; padding-bottom: .7rem; border-bottom: 1px solid var(--dark-blood); margin-bottom: 1.2rem; }
.track-head > i { font-size: 1.5rem; color: var(--blood-bright); width: 32px; text-align: center; }
.track-head h2 { font-size: 1.4rem; color: var(--bone); letter-spacing: 1px; }
.track-blurb { font-family: 'Orbitron', sans-serif; font-size: .64rem; color: var(--bone-dim); line-height: 1.5; margin-top: .2rem; max-width: 620px; }
.track-progress { margin-left: auto; font-family: 'Orbitron', sans-serif; font-size: .85rem; color: var(--blood-bright); border: 1px solid var(--dark-blood); border-radius: 999px; padding: .2rem .7rem; }
.track-empty { font-family: 'Orbitron', sans-serif; font-size: .72rem; color: var(--bone-dim); line-height: 1.6; background: rgba(0,0,0,.3); border-left: 3px solid var(--dark-blood); padding: .8rem 1rem; border-radius: 4px; }

.tier { display: grid; grid-template-columns: 130px 1fr; gap: 1rem; margin-bottom: 1.1rem; align-items: start; position: relative; }
/* connector spine linking each level's number to the next */
.tier:not(:last-child) .tier-num::after {
    content: ''; position: absolute; left: 50%; top: 100%; transform: translateX(-50%);
    width: 2px; height: calc(100% - 24px + 1.1rem); background: linear-gradient(var(--dark-blood), transparent);
}
.tier-label { font-family: 'Orbitron', sans-serif; font-size: .7rem; color: var(--bone-dim); letter-spacing: 1px; text-transform: uppercase; padding-top: .4rem; display: flex; align-items: center; gap: .5rem; }
.tier-num { flex: 0 0 auto; position: relative; display: inline-flex; align-items: center; justify-content: center; width: 24px; height: 24px; border-radius: 50%; border: 1px solid var(--blood); color: var(--blood-bright); font-size: .72rem; background: var(--panel-bg); z-index: 1; }
.tier-row { display: grid; grid-template-columns: repeat(auto-fill, minmax(230px, 1fr)); gap: .8rem; }

.lesson-node { position: relative; background: #0a0a0a; border: 1px solid var(--blood); border-radius: 8px; padding: 1rem; display: flex; flex-direction: column; gap: .5rem; transition: border-color .2s, box-shadow .2s, transform .15s; }
.lesson-node:not(.locked):hover { border-color: var(--blood-bright); box-shadow: 0 0 18px rgba(139,0,0,.4); transform: translateY(-2px); }
.lesson-node.done { border-color: var(--ok); }
.lesson-node.locked { opacity: .55; border-color: #333; border-style: dashed; }
.lesson-node h3 { font-size: .98rem; color: var(--bone); letter-spacing: .5px; }
.node-meta { font-family: 'Orbitron', sans-serif; font-size: .58rem; color: var(--bone-dim); letter-spacing: 1px; text-transform: uppercase; }
.node-summary { font-family: 'Orbitron', sans-serif; font-size: .68rem; color: #aaa; line-height: 1.5; flex: 1; }
.node-state { position: absolute; top: .8rem; right: .8rem; font-size: .8rem; }
.node-state.done { color: var(--ok-bright); }
.node-state.lock { color: var(--bone-dim); }
.node-locked-note { font-family: 'Orbitron', sans-serif; font-size: .6rem; color: var(--bone-dim); line-height: 1.5; border-top: 1px solid #222; padding-top: .5rem; }
.lesson-node .primary-btn { align-self: flex-start; }

/* ---------- code editor + console ---------- */
.code-editor {
    width: 100%; min-height: 150px; background: #0c0c0c; color: #d8f0d0;
    border: 1px solid var(--dark-blood); border-radius: 6px; padding: .8rem;
    font-family: 'Courier New', monospace; font-size: .82rem; line-height: 1.5;
    resize: vertical; tab-size: 4; white-space: pre; overflow-wrap: normal; overflow-x: auto;
}
.code-editor:focus { outline: none; border-color: var(--blood); box-shadow: 0 0 8px rgba(139,0,0,.4); }
.code-editor:read-only { opacity: .7; }
.code-bar { display: flex; align-items: center; gap: .8rem; margin: .6rem 0; }
.code-status { font-family: 'Orbitron', sans-serif; font-size: .64rem; color: var(--bone-dim); }
.code-console {
    background: #050505; border: 1px solid #1a1a1a; border-left: 3px solid var(--blood);
    border-radius: 4px; padding: .7rem .8rem; font-family: 'Courier New', monospace;
    font-size: .78rem; line-height: 1.5; color: #9fd89f; white-space: pre-wrap; word-break: break-word;
    max-height: 180px; overflow-y: auto; margin-bottom: .4rem;
}