/* =================================================================
   Demo UI: тестовое задание Bitrix
   ================================================================= */

:root {
    --c-bg:        #f5f7fb;
    --c-card:      #ffffff;
    --c-border:    #e3e8f0;
    --c-text:      #1c2433;
    --c-muted:     #6c7a8d;
    --c-primary:   #1a73e8;
    --c-primary-d: #1557b0;
    --c-success:   #1f9d55;
    --c-success-l: #e6f6ec;
    --c-warning:   #c47a00;
    --c-warning-l: #fff5e0;
    --c-danger:    #c0392b;
    --c-danger-l:  #fde8e6;
    --c-code-bg:   #0d1b2a;
    --c-code-fg:   #e2e8f0;
    --shadow-sm:   0 1px 2px rgba(28, 36, 51, .06);
    --shadow-md:   0 4px 16px rgba(28, 36, 51, .08);
    --radius:      10px;
    --radius-sm:   6px;
}

* { box-sizing: border-box; }

html, body {
    margin: 0;
    padding: 0;
    background: var(--c-bg);
    color: var(--c-text);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    font-size: 15px;
    line-height: 1.55;
}

a { color: var(--c-primary); text-decoration: none; }
a:hover { text-decoration: underline; }

code, pre {
    font-family: ui-monospace, SFMono-Regular, "JetBrains Mono", Menlo, Consolas, monospace;
    font-size: 13px;
}

code {
    background: rgba(28, 36, 51, .06);
    padding: 1px 6px;
    border-radius: 4px;
}

pre {
    background: var(--c-code-bg);
    color: var(--c-code-fg);
    padding: 16px 20px;
    border-radius: var(--radius-sm);
    overflow-x: auto;
    line-height: 1.5;
    margin: 12px 0;
}
pre code { background: none; padding: 0; color: inherit; }

/* ----------------------------- layout ---------------------------- */

.wrap { max-width: 1100px; margin: 0 auto; padding: 24px; }

.topbar {
    background: var(--c-card);
    border-bottom: 1px solid var(--c-border);
    padding: 14px 0;
    box-shadow: var(--shadow-sm);
}
.topbar .wrap { padding-top: 0; padding-bottom: 0; display: flex; align-items: center; gap: 18px; }
.topbar .brand { font-weight: 600; font-size: 16px; color: var(--c-text); }
.topbar nav { margin-left: auto; display: flex; gap: 6px; }
.topbar nav a {
    color: var(--c-muted);
    padding: 8px 12px;
    border-radius: var(--radius-sm);
    font-size: 14px;
}
.topbar nav a:hover { background: var(--c-bg); color: var(--c-text); text-decoration: none; }
.topbar nav a.active { background: rgba(26,115,232,.08); color: var(--c-primary); font-weight: 500; }

h1 { font-size: 28px; margin: 0 0 6px; line-height: 1.2; }
h2 { font-size: 20px; margin: 28px 0 12px; }
h3 { font-size: 16px; margin: 20px 0 8px; color: var(--c-text); }
.lead { color: var(--c-muted); margin: 0 0 24px; font-size: 16px; }

/* ----------------------------- cards ----------------------------- */

.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 18px; }

.card {
    background: var(--c-card);
    border: 1px solid var(--c-border);
    border-radius: var(--radius);
    padding: 22px;
    box-shadow: var(--shadow-sm);
    transition: box-shadow .15s, transform .15s;
}
.card.hover:hover { box-shadow: var(--shadow-md); transform: translateY(-2px); }
.card .num {
    font-size: 12px; font-weight: 600; color: var(--c-primary);
    letter-spacing: .8px; text-transform: uppercase;
}
.card h2 { margin: 4px 0 10px; font-size: 18px; }
.card p { color: var(--c-muted); margin: 0 0 16px; }
.card .meta {
    display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 14px;
}
.card .meta .tag {
    font-size: 12px; padding: 3px 10px; border-radius: 100px;
    background: var(--c-bg); color: var(--c-muted);
}

/* ----------------------------- buttons --------------------------- */

.btn {
    display: inline-block;
    border: 0;
    background: var(--c-primary);
    color: #fff;
    font-size: 14px;
    font-weight: 500;
    padding: 10px 18px;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: background .15s;
    text-decoration: none;
}
.btn:hover { background: var(--c-primary-d); text-decoration: none; }
.btn:disabled { background: #aab7c4; cursor: not-allowed; }
.btn.secondary { background: var(--c-card); color: var(--c-text); border: 1px solid var(--c-border); }
.btn.secondary:hover { background: var(--c-bg); }
.btn.success { background: var(--c-success); }
.btn-row { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; }

/* ----------------------------- form ------------------------------ */

label.field { display: block; margin: 14px 0 4px; font-size: 13px; color: var(--c-muted); }
input[type=number], input[type=text], select {
    background: #fff;
    border: 1px solid var(--c-border);
    border-radius: var(--radius-sm);
    padding: 8px 12px;
    font-size: 14px;
    font-family: inherit;
    width: 100%;
    max-width: 280px;
}
input[type=number]:focus, input[type=text]:focus, select:focus {
    outline: none; border-color: var(--c-primary); box-shadow: 0 0 0 3px rgba(26,115,232,.15);
}

/* ----------------------------- table ----------------------------- */

table.data {
    width: 100%; border-collapse: collapse; margin: 12px 0;
    background: #fff; border: 1px solid var(--c-border); border-radius: var(--radius-sm);
    overflow: hidden;
}
table.data th, table.data td {
    padding: 9px 12px; text-align: left;
    border-bottom: 1px solid var(--c-border);
    font-size: 13.5px;
}
table.data th { background: var(--c-bg); color: var(--c-muted); font-weight: 500; font-size: 12px; text-transform: uppercase; letter-spacing: .4px; }
table.data tr:last-child td { border-bottom: 0; }
table.data tr:hover { background: rgba(26,115,232,.02); }
table.data .num { text-align: right; font-variant-numeric: tabular-nums; }

/* ------------------------ progress / status ---------------------- */

.progress {
    height: 22px; background: var(--c-bg); border-radius: 100px; overflow: hidden;
    position: relative; margin: 12px 0;
}
.progress > .bar {
    height: 100%; width: 0; background: linear-gradient(90deg, var(--c-primary) 0%, #4a90e2 100%);
    transition: width .25s ease;
}
.progress > .label {
    position: absolute; inset: 0; display: flex; align-items: center; justify-content: center;
    font-size: 12px; font-weight: 500; color: var(--c-text);
}

.alert {
    padding: 12px 16px;
    border-radius: var(--radius-sm);
    margin: 12px 0;
    font-size: 14px;
}
.alert.info    { background: #eaf3fc; color: var(--c-primary-d);  border: 1px solid #cfe2f7; }
.alert.success { background: var(--c-success-l); color: #195e35;  border: 1px solid #c6ecd2; }
.alert.warn    { background: var(--c-warning-l); color: #6d4500;  border: 1px solid #f3d99c; }
.alert.error   { background: var(--c-danger-l);  color: #832018;  border: 1px solid #f1c1bc; }

.spinner {
    display: inline-block; width: 14px; height: 14px; border-radius: 50%;
    border: 2px solid var(--c-border); border-top-color: var(--c-primary);
    animation: spin .7s linear infinite; vertical-align: -2px; margin-right: 6px;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ----------------------------- misc ------------------------------ */

.kv { display: grid; grid-template-columns: 200px 1fr; gap: 6px 16px; margin: 12px 0; }
.kv dt { color: var(--c-muted); font-size: 13px; }
.kv dd { margin: 0; font-size: 14px; }

.muted { color: var(--c-muted); }
.small { font-size: 13px; }
.mono  { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; }

hr.sep { border: 0; border-top: 1px solid var(--c-border); margin: 24px 0; }