:root {
    --bg: #050505;
    --card-border: #222;
    --divider: #1a1a1a;
    --divider-2: #1e1e1e;
    --red: #e11d2e;
    --red-soft: #ff4d5e;
    --red-tint-bg: #1a0d0e;
    --red-tint-border: #3a1518;
    --red-tint-text: #f2c2c6;
    --text: #f2f2f2;
    --text-2: #999;
    --text-3: #8c8c8c;
    --text-4: #777;
    --muted: #666;
    --muted-2: #555;
    --success: #9fd18a;
    --input-bg: #0d0d0d;
    --bot-bg: #111;
    --bot-border: #1e1e1e;
    --bot-text: #ddd;
}

* { box-sizing: border-box; }

html, body {
    margin: 0;
    padding: 0;
    background: var(--bg);
    color: var(--text);
    font-family: "Segoe UI", Roboto, sans-serif;
    min-height: 100vh;
}

a { color: var(--red); text-decoration: none; }
a:hover { color: var(--red-soft); }

input::placeholder, textarea::placeholder { color: var(--muted-2); }

::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: #050505; }
::-webkit-scrollbar-thumb { background: #2a2a2a; border-radius: 8px; }
::-webkit-scrollbar-thumb:hover { background: var(--red); }

.hidden { display: none !important; }

/* Page shell */
.page {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-start;
    padding: 0 12px;
}
.page.center { justify-content: center; }

/* Flash */
.flash-container { width: 100%; max-width: 420px; margin: 24px auto 0; }
.flash-message {
    background: rgba(225,29,46,0.10);
    border: 1px solid var(--red);
    color: var(--red-soft);
    padding: 10px 14px;
    border-radius: 4px;
    margin-bottom: 10px;
    font-size: 0.85rem;
}

/* Brand */
.brand {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--text);
    display: inline-block;
}
.brand-lg { font-size: 1.2rem; }
.brand-icon { color: var(--red); font-family: monospace; }
.brand-accent { color: var(--red-soft); }

/* Card */
.card {
    width: 100%;
    background: var(--bg);
    border: 1px solid var(--card-border);
    border-radius: 4px;
    margin: 24px 0;
}
.card-login { max-width: 420px; padding: 60px 32px; margin: 40px 0; }
.card-640 { max-width: 640px; }
.card-820 { max-width: 820px; }

/* Card header bar */
.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 28px;
    border-bottom: 1px solid var(--divider);
    flex-wrap: wrap;
    gap: 10px;
}
.card-body { padding: 32px 28px; }

/* ---------- Login ---------- */
.login-logo { text-align: center; margin-bottom: 36px; }
.login-subtitle { color: var(--text-3); font-size: 0.85rem; margin: 8px 0 0; }
.field-label {
    color: var(--text-2);
    font-size: 0.78rem;
    font-family: monospace;
    display: block;
    margin-bottom: 6px;
    text-transform: uppercase;
    letter-spacing: 0.03em;
}
.field-input {
    width: 100%;
    background: var(--input-bg);
    border: 1px solid var(--card-border);
    border-radius: 4px;
    padding: 11px 12px;
    color: var(--text);
    font-size: 0.9rem;
    margin-bottom: 20px;
    font-family: inherit;
}
.field-input:focus { outline: none; border-color: var(--red); }
.btn-block {
    width: 100%;
    background: var(--red);
    color: #fff;
    border: none;
    border-radius: 4px;
    padding: 12px;
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    font-family: inherit;
}
.btn-block:hover { background: var(--red-soft); }
.login-foot { color: var(--muted-2); font-size: 0.75rem; text-align: center; margin-top: 20px; }

/* ---------- Header nav (dashboard/admin) ---------- */
.header-nav { display: flex; gap: 18px; align-items: center; font-size: 0.85rem; }
.header-nav a { color: var(--muted); }
.header-nav a:hover { color: var(--red-soft); }
.header-user { color: var(--red-soft); font-family: monospace; }
.inline-form { display: inline; margin: 0; }
.link-btn {
    background: none; border: none; color: var(--muted); cursor: pointer;
    font-size: 0.85rem; padding: 0; font-family: inherit;
}
.link-btn:hover { color: var(--red-soft); }

/* ---------- Dashboard ---------- */
.dash-title { margin: 0 0 4px; font-size: 1.4rem; color: var(--text); font-weight: 600; }
.dash-subtitle { margin: 0 0 30px; color: var(--text-3); font-size: 0.9rem; }

.victory-banner {
    border: 1px solid var(--red);
    border-radius: 6px;
    background: rgba(225,29,46,0.08);
    box-shadow: 0 0 24px rgba(225,29,46,0.15);
    padding: 18px 20px;
    margin: 0 0 28px;
    text-align: center;
    animation: victory-pulse 2.2s ease-in-out infinite;
}
.victory-title { color: var(--red-soft); font-weight: 700; font-size: 1.05rem; }
.victory-sub { color: var(--text-2); font-size: 0.85rem; margin-top: 6px; }
@keyframes victory-pulse {
    0%, 100% { box-shadow: 0 0 24px rgba(225,29,46,0.15); }
    50% { box-shadow: 0 0 34px rgba(225,29,46,0.30); }
}

.rail { position: relative; padding-left: 28px; }
.rail::before {
    content: "";
    position: absolute;
    left: 5px; top: 6px; bottom: 6px;
    width: 1px;
    background: var(--card-border);
}
.rail-item { position: relative; padding-bottom: 26px; }
.rail-item:last-child { padding-bottom: 0; }
.rail-dot {
    position: absolute;
    left: -28px; top: 2px;
    width: 11px; height: 11px;
    border-radius: 50%;
    background: #444;
}
.rail-name { color: var(--text); font-weight: 600; font-size: 0.95rem; }
.rail-status { color: var(--text-4); font-size: 0.8rem; }
.rail-continue {
    display: inline-block;
    margin-top: 8px;
    color: var(--red);
    font-weight: 600;
    font-size: 0.83rem;
    border: 1px solid var(--red);
    padding: 6px 14px;
    border-radius: 3px;
}
.rail-continue:hover { color: var(--red); background: rgba(225,29,46,0.08); }
.rail-continue.rail-done { border-color: #333; color: var(--text-2); }
.rail-continue.rail-done:hover { border-color: var(--text); color: var(--text); background: transparent; }

.rail-item.is-resolved .rail-dot { background: var(--text); }
.rail-item.is-current .rail-dot { background: var(--red); box-shadow: 0 0 0 3px rgba(225,29,46,0.2); }
.rail-item.is-current .rail-status { color: #a5a5a5; }
.rail-item.is-locked { opacity: 0.4; }
.rail-item.is-locked .rail-dot { background: #444; }

/* ---------- Grid tables (HoF / admin users) ---------- */
.section-title { font-size: 1rem; color: var(--text); font-weight: 600; margin: 40px 0 12px; }
.grid-table {
    display: grid;
    gap: 0;
    font-family: monospace;
    font-size: 0.82rem;
}
.grid-table .gt-head,
.grid-table .gt-cell { min-width: 0; overflow-wrap: anywhere; }
.grid-table .gt-head {
    color: var(--muted);
    padding: 6px 8px 6px 0;
    border-bottom: 1px solid var(--divider);
}
.grid-table .gt-cell { color: var(--bot-text); padding: 8px 8px 8px 0; }
.grid-table .gt-rank { color: var(--red-soft); }
.grid-table .gt-muted { color: var(--text-4); }
.grid-table .gt-ok { color: var(--success); }
.grid-table .gt-bad { color: var(--red); }

.hof-grid { grid-template-columns: 40px 1fr 80px 90px 90px; }
.users-grid { grid-template-columns: 1fr 64px 74px 64px 74px 90px 78px; overflow-x: auto; }

/* ---------- Lab chat ---------- */
.lab-head-left { display: flex; align-items: center; gap: 14px; }
.lab-back { color: var(--muted); font-size: 0.85rem; }
.lab-num { font-family: monospace; color: var(--red); font-size: 0.72rem; }
.lab-name { color: var(--text); font-weight: 600; font-size: 0.95rem; }
.lab-badge {
    color: var(--text-4);
    font-family: monospace;
    font-size: 0.78rem;
    border: 1px solid #2a2a2a;
    padding: 4px 10px;
    border-radius: 3px;
}

.lab-context {
    margin: 0;
    padding: 14px 28px;
    border-bottom: 1px solid var(--divider);
    color: var(--text-2);
    font-size: 0.84rem;
    line-height: 1.5;
}

.lab-body { display: flex; }
.chat-col {
    flex-grow: 1;
    padding: 24px 28px;
    display: flex;
    flex-direction: column;
    gap: 16px;
    min-height: 340px;
    min-width: 0;
}
.chat-log { display: flex; flex-direction: column; gap: 16px; }
.chat-spacer { flex-grow: 1; }

.chat-msg {
    max-width: 75%;
    border-radius: 6px;
    padding: 12px 14px;
    font-size: 0.85rem;
    white-space: pre-wrap;
    word-break: break-word;
}
.chat-msg.assistant {
    align-self: flex-start;
    background: var(--bot-bg);
    border: 1px solid var(--bot-border);
    color: var(--bot-text);
}
.chat-msg.user {
    align-self: flex-end;
    background: var(--red-tint-bg);
    border: 1px solid var(--red-tint-border);
    color: var(--red-tint-text);
}
.chat-msg.error {
    align-self: center;
    background: rgba(225,29,46,0.08);
    border: 1px solid var(--red);
    color: var(--red-soft);
}

.typing-indicator { align-self: flex-start; padding: 8px 4px; display: flex; gap: 4px; }
.typing-indicator span {
    width: 7px; height: 7px; border-radius: 50%;
    background: var(--red-soft);
    animation: bounce 1.2s infinite ease-in-out;
}
.typing-indicator span:nth-child(2) { animation-delay: 0.15s; }
.typing-indicator span:nth-child(3) { animation-delay: 0.3s; }
@keyframes bounce {
    0%, 80%, 100% { transform: translateY(0); opacity: 0.4; }
    40% { transform: translateY(-6px); opacity: 1; }
}

.doc-input-block { display: flex; flex-direction: column; gap: 6px; }
.doc-input-block label { color: var(--text-2); font-size: 0.85rem; }
.doc-input-block textarea {
    background: var(--input-bg);
    border: 1px solid var(--card-border);
    color: var(--text);
    padding: 10px 12px;
    border-radius: 4px;
    font-family: inherit;
    font-size: 0.85rem;
    resize: vertical;
}
.doc-input-block textarea:focus { outline: none; border-color: var(--red); }

.chat-input-row {
    display: flex;
    gap: 10px;
    border-top: 1px solid var(--divider);
    padding-top: 16px;
}
.chat-input-row input {
    flex-grow: 1;
    background: var(--input-bg);
    border: 1px solid var(--card-border);
    border-radius: 4px;
    padding: 10px 12px;
    color: var(--text);
    font-size: 0.85rem;
    font-family: inherit;
}
.chat-input-row input:focus { outline: none; border-color: var(--red); }
.chat-input-row button {
    background: var(--red);
    color: #fff;
    border: none;
    border-radius: 4px;
    padding: 10px 18px;
    font-size: 0.85rem;
    font-weight: 600;
    cursor: pointer;
    font-family: inherit;
}
.chat-input-row button:hover { background: var(--red-soft); }

.lab-sidebar {
    width: 220px;
    flex-shrink: 0;
    border-left: 1px solid var(--divider);
    padding: 24px 20px;
}
.sidebar-label { color: var(--muted); font-family: monospace; font-size: 0.7rem; margin-bottom: 10px; }
.sidebar-prompts { color: var(--text); font-size: 0.85rem; margin-bottom: 4px; }
.sidebar-time { color: var(--text-4); font-size: 0.78rem; margin-bottom: 20px; }
.sidebar-btn {
    width: 100%;
    background: transparent;
    border: 1px solid #333;
    color: #ccc;
    border-radius: 4px;
    padding: 9px;
    font-size: 0.8rem;
    cursor: pointer;
    font-family: inherit;
    margin-bottom: 10px;
}
.sidebar-btn:hover { border-color: var(--red); color: var(--red-soft); }
.sidebar-btn.muted { color: var(--text-4); }
/* Hint modal */
.hint-modal {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    z-index: 500;
}
.hint-panel {
    width: 100%;
    max-width: 620px;
    max-height: 80vh;
    display: flex;
    flex-direction: column;
    background: #0d0d0d;
    border: 1px solid var(--card-border);
    border-radius: 6px;
    overflow: hidden;
}
.hint-panel-head {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 14px 18px;
    border-bottom: 1px solid var(--divider);
}
.hint-panel-title {
    color: var(--text-2);
    font-family: monospace;
    font-size: 0.78rem;
    text-transform: uppercase;
    letter-spacing: 0.03em;
}
.hint-close {
    background: none;
    border: none;
    color: var(--text-4);
    font-size: 1.4rem;
    line-height: 1;
    cursor: pointer;
    padding: 0 4px;
}
.hint-close:hover { color: var(--red-soft); }
.hint-body {
    margin: 0;
    padding: 20px 22px;
    overflow-y: auto;
    color: var(--bot-text);
    font-family: "Cascadia Code", "Fira Code", Consolas, monospace;
    font-size: 0.9rem;
    line-height: 1.65;
    white-space: pre-wrap;
    word-break: break-word;
}

.resolved-banner {
    background: rgba(159,209,138,0.08);
    border: 1px solid var(--success);
    color: var(--success);
    padding: 10px 14px;
    border-radius: 4px;
    font-size: 0.85rem;
}

/* ---------- Admin ---------- */
.admin-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 14px;
    margin-bottom: 32px;
}
.stat-card {
    border: 1px solid var(--divider-2);
    border-radius: 6px;
    padding: 16px;
}
.stat-label { color: var(--muted); font-family: monospace; font-size: 0.7rem; }
.stat-value { color: var(--text); font-size: 1.4rem; font-weight: 700; margin-top: 6px; }
.stat-card.alert { border-color: var(--red-tint-border); }
.stat-card.alert .stat-label { color: var(--red); }

.admin-csv { color: var(--muted); font-size: 0.85rem; }
.admin-csv:hover { color: var(--red-soft); }

/* ---------- Confetti ---------- */
#confetti-canvas {
    position: fixed;
    top: 0; left: 0;
    width: 100vw; height: 100vh;
    pointer-events: none;
    z-index: 999;
    display: none;
}

/* ---------- Mobile ---------- */
@media (max-width: 700px) {
    .card { margin: 16px 0; }
    .card-login { padding: 44px 24px; margin: 24px 0; }
    .card-header { padding: 16px 18px; }
    .card-body { padding: 20px 18px; }
    .lab-context { padding: 12px 18px; }
    .lab-body { flex-direction: column; }
    .lab-sidebar {
        width: auto;
        border-left: none;
        border-top: 1px solid var(--divider);
    }
    .admin-stats { grid-template-columns: 1fr 1fr; }
    .hof-grid { grid-template-columns: 28px 1fr 52px 66px 68px; font-size: 0.72rem; }
    .users-grid { grid-template-columns: 1fr 42px 52px 42px 52px 60px 58px; font-size: 0.7rem; }
    .hint-body { font-size: 0.82rem; padding: 16px 16px; }
}

@media (max-width: 460px) {
    .page { padding: 0 8px; }
    .card-login { padding: 36px 18px; }
    .card-header { padding: 14px 14px; }
    .card-body { padding: 16px 14px; }
    .brand-lg { font-size: 1.1rem; }
    .header-nav { gap: 12px; }
    .admin-stats { grid-template-columns: 1fr 1fr; gap: 10px; }
    .stat-card { padding: 13px; }
    .stat-value { font-size: 1.2rem; }
    /* Cifras mono no rompen; nombres/usuario sí pueden partir línea */
    .hof-grid { grid-template-columns: 24px 1fr 40px 54px 58px; font-size: 0.68rem; }
    .users-grid { grid-template-columns: 1fr 34px 42px 34px 42px 50px 52px; font-size: 0.66rem; }
    .chat-col { padding: 18px 16px; }
    .chat-msg { max-width: 88%; }
    .chat-input-row button { padding: 10px 14px; }
}