:root{color-scheme:dark;--bg:#0b111c;--panel:#141e2e;--line:#293a50;--text:#edf3fa;--muted:#9bacbf;--accent:#69e6c2}*{box-sizing:border-box}body{margin:0;background:var(--bg);font:16px/1.55 system-ui,sans-serif;color:var(--text)}header{padding:22px max(24px,calc((100vw - 1280px)/2));border-bottom:1px solid var(--line);display:flex;justify-content:space-between;align-items:center;gap:20px}.brand{font-size:28px;font-weight:900;letter-spacing:1px;text-decoration:none;line-height:1.15}.brand span{color:var(--accent)}.brand small{display:block;font-size:9px;color:var(--muted);letter-spacing:2px;margin-top:8px}nav{display:flex;gap:12px;align-items:center;flex-wrap:wrap}a{color:var(--accent)}nav a,nav button{font-size:14px}button{background:transparent;border:1px solid var(--line);border-radius:9px;padding:9px 14px;color:var(--text);font:inherit;cursor:pointer}button:hover,button:focus-visible{border-color:var(--accent)}button:disabled{opacity:.5;cursor:wait}button.primary{background:var(--accent);color:#0b211c;border:0;font-weight:700}main{max-width:1280px;margin:0 auto;padding:36px 24px}.intro{display:flex;justify-content:space-between;gap:20px;align-items:center;margin-bottom:28px}h1{font-size:clamp(28px,4vw,46px);line-height:1.2;margin:8px 0}h2{font-size:22px;margin:0 0 18px}h3{margin:0 0 8px;font-size:19px}.eyebrow{font-size:11px;letter-spacing:2px;color:var(--accent);font-weight:700}.muted,#identity{color:var(--muted)}.status{border:1px solid var(--line);border-radius:12px;padding:12px 18px;max-width:380px}#message{border:1px solid #ffbe7b;padding:15px;border-radius:12px;margin-bottom:20px}.cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:16px;margin-bottom:32px}.card{text-align:left;background:var(--panel);padding:22px;min-height:156px;display:flex;flex-direction:column;align-items:flex-start;gap:10px}.card.done{border-color:var(--accent)}.card .points{font-size:26px;color:var(--accent);font-weight:800}.card small{color:var(--muted)}.category-title{margin:28px 0 14px}.score-grid,.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px}article,form[data-action],aside{background:var(--panel);border:1px solid var(--line);border-radius:14px;padding:24px;margin-bottom:22px}table{border-collapse:collapse;width:100%;font-size:14px}th,td{text-align:left;padding:10px;border-bottom:1px solid var(--line)}th{color:var(--muted);font-weight:500}.table-wrap{overflow-x:auto}label{display:block;margin-bottom:14px;color:var(--muted);font-size:14px}input,select,textarea{display:block;margin-top:5px;width:100%;background:var(--bg);border:1px solid var(--line);border-radius:7px;padding:11px;color:var(--text);font:inherit}input:focus,select:focus,textarea:focus{outline:1px solid var(--accent)}textarea{min-height:110px}.check{display:flex;gap:10px;align-items:center}.check input{display:inline;width:auto;margin:0}aside{border-color:var(--accent)}pre{white-space:pre-wrap;overflow-wrap:anywhere}dialog{background:var(--panel);color:var(--text);border:1px solid var(--line);border-radius:18px;width:min(760px,calc(100vw - 32px));max-height:90vh;padding:30px}dialog::backdrop{background:#020810d9}.close{position:absolute;right:14px;top:10px;font-size:22px}.description{margin:20px 0;overflow-wrap:anywhere}.description img{max-width:100%}.description pre{background:var(--bg);padding:16px;border-radius:9px}#challenge-files{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:20px}.notice-content{white-space:pre-wrap}footer{text-align:center;padding:30px;color:var(--muted);font-size:13px}[hidden]{display:none!important}@media(max-width:760px){header{align-items:flex-start;flex-direction:column;padding:18px 20px}nav{gap:8px}.intro{align-items:flex-start;flex-direction:column}.score-grid,.form-grid{grid-template-columns:1fr}main{padding:24px 16px}.status{max-width:none;width:100%}dialog{width:100vw;height:100dvh;max-height:100dvh;margin:0;border-radius:0;padding:24px}th,td{padding:8px}.card{min-height:130px}}
.login-layout{display:grid;grid-template-columns:1.1fr 1fr;gap:80px;align-items:center;min-height:calc(100vh - 215px)}.login-intro h1{font-size:clamp(34px,5vw,64px);line-height:1.1;margin:20px 0}.login-intro p{max-width:510px}.login-panel{padding:36px}.login-panel .primary{width:100%}.login-panel>p{font-size:14px}.login-panel #message p{margin:0}@media(max-width:760px){.login-layout{grid-template-columns:1fr;gap:24px;min-height:auto}.login-panel{padding:24px}.login-intro h1{font-size:36px}}

/* === KULCTF calm theme === */

:root {
    color-scheme: light;
    --bg: #f4f5f7;
    --panel: #ffffff;
    --line: #d7dce2;
    --text: #202832;
    --muted: #697481;
    --accent: #315f86;
}

body {
    background: var(--bg);
    color: var(--text);
}

button {
    border-radius: 5px;
}

.status,
#message,
.card {
    border-radius: 5px;
}

article,
form[data-action],
aside,
dialog {
    border-radius: 6px;
}

input,
select,
textarea {
    border-radius: 4px;
    background: #ffffff;
}

button.primary {
    background: var(--accent);
    color: #ffffff;
    border: 1px solid var(--accent);
}

aside {
    border-color: var(--line);
    border-left: 3px solid var(--accent);
}

dialog::backdrop {
    background: rgba(20, 27, 35, 0.45);
}

.description pre {
    background: #f0f2f4;
    border-radius: 4px;
}


/* === KULCTF HELP PAGE === */

.help-lead {
    max-width: 760px;
    margin: 0 0 24px;
    color: var(--muted);
}

.help-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px;
    align-items: stretch;
}

.help-item {
    margin: 0;
    padding: 22px;
}

.help-item h2 {
    margin: 0 0 14px;
    font-size: 19px;
    line-height: 1.35;
}

.help-item p {
    margin: 0 0 12px;
}

.help-item p:last-child {
    margin-bottom: 0;
}

.help-item ol {
    margin: 0 0 14px;
    padding-left: 22px;
}

.help-item li {
    padding-left: 3px;
}

.help-item li + li {
    margin-top: 8px;
}

.help-item code {
    padding: 2px 5px;
    border: 1px solid var(--line);
    border-radius: 3px;
    background: #f0f2f4;
    color: var(--text);
    overflow-wrap: anywhere;
}

.help-section-title {
    margin: 32px 0 18px;
    font-size: 21px;
}

@media (max-width: 760px) {
    .help-grid {
        grid-template-columns: 1fr;
        gap: 12px;
    }

    .help-item {
        padding: 18px;
    }

    .help-item h2 {
        font-size: 18px;
    }

    .help-section-title {
        margin-top: 26px;
    }
}

/* ==========================================
   KULCTF — ТАЙМЕР МЕРОПРИЯТИЯ
   ========================================== */

.event-clock {
    margin: 0 0 24px;
    padding: 20px 24px;
    background: #ffffff;
    border: 1px solid #dce5f0;
    border-radius: 14px;
    box-shadow: 0 3px 12px rgba(22, 44, 75, 0.04);
}

.event-clock-main {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
}

#event-clock-label,
.event-clock-secondary-label {
    margin-bottom: 7px;
    color: #64748b;
    font-size: 13px;
    font-weight: 600;
}

#event-clock-remaining {
    display: block;
    color: #17345c;
    font-size: clamp(30px, 5vw, 42px);
    font-weight: 800;
    line-height: 1.2;
    letter-spacing: 1px;
    font-variant-numeric: tabular-nums;
}

#event-clock-elapsed {
    display: block;
    color: #475569;
    font-size: 24px;
    font-weight: 700;
    line-height: 1.3;
    font-variant-numeric: tabular-nums;
}

.event-clock-main > div:last-child {
    text-align: right;
}

.event-clock-details {
    margin-top: 16px;
    padding-top: 13px;
    border-top: 1px solid #e7edf4;
    color: #64748b;
    font-size: 13px;
    line-height: 1.6;
}

/* Адаптация для телефонов */

@media (max-width: 600px) {
    .event-clock {
        padding: 16px;
        margin-bottom: 18px;
    }

    .event-clock-main {
        flex-direction: column;
        align-items: flex-start;
        gap: 18px;
    }

    .event-clock-main > div:last-child {
        text-align: left;
    }

    #event-clock-remaining {
        font-size: 34px;
    }

    #event-clock-elapsed {
        font-size: 22px;
    }

    .event-clock-details {
        font-size: 12px;
    }
}