/* Базовая стилизация LMS. Палитра совпадает с partner-site. */
:root {
    --bg:         #f7f8fb;
    --bg-card:   #ffffff;
    --ink:       #0f1729;
    --ink-soft:  #4c5671;
    --ink-muted: #7a8399;
    --brand:     #2a5ee8;
    --brand-ink: #ffffff;
    --accent:    #16a34a;
    --danger:    #dc2626;
    --border:    #e5e8f0;
    --radius:    12px;
    --maxw:      1080px;
    --shadow:    0 2px 8px rgba(15, 23, 41, .04);
}
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Arial, sans-serif;
    color: var(--ink);
    background: var(--bg);
    font-size: 16px;
    line-height: 1.55;
    -webkit-font-smoothing: antialiased;
}
.container { max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }

/* Header */
.site-header {
    background: #fff;
    border-bottom: 1px solid var(--border);
    padding: 14px 0;
}
.site-header .container { display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; color: var(--ink); font-weight: 700; }
.brand-logo {
    display: inline-flex; align-items: center; justify-content: center;
    width: 32px; height: 32px; border-radius: 8px;
    background: var(--brand); color: var(--brand-ink);
    font-size: 13px; font-weight: 800; letter-spacing: .5px;
}
.brand-name { font-size: 15px; }
.main-nav { display: flex; align-items: center; gap: 18px; }
.main-nav a { color: var(--ink-soft); text-decoration: none; font-weight: 500; font-size: 14px; }
.main-nav a:hover { color: var(--brand); }
.user-chip {
    background: var(--bg); border: 1px solid var(--border);
    padding: 4px 10px; border-radius: 999px;
    font-size: 13px; color: var(--ink-soft);
}

/* Main */
.site-main { padding: 40px 0 80px; }
.site-footer { padding: 24px 0; border-top: 1px solid var(--border); color: var(--ink-muted); }

/* Flash */
.flash {
    margin-bottom: 20px; padding: 12px 16px; border-radius: var(--radius);
    font-size: 14px;
}
.flash-ok       { background: #e6f6ec; color: #0c5a2c; border: 1px solid #b6e3c5; }
.flash-error    { background: #fde8e8; color: #7b1414; border: 1px solid #f5b5b5; }
.flash-info     { background: #e4edff; color: #172d6c; border: 1px solid #b9ccf5; }

/* Cards */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 24px;
    box-shadow: var(--shadow);
    margin-bottom: 16px;
}

/* Forms */
.form-stack { display: flex; flex-direction: column; gap: 16px; max-width: 420px; }
.form-stack label { display: block; font-size: 13px; color: var(--ink-soft); margin-bottom: 6px; font-weight: 500; }
.form-stack input[type=text], .form-stack input[type=email], .form-stack input[type=password], .form-stack input[type=tel] {
    width: 100%; padding: 10px 12px;
    border: 1px solid var(--border); border-radius: 8px;
    font-family: inherit; font-size: 15px; color: var(--ink);
    background: #fff; outline: none; transition: border-color .15s;
}
.form-stack input:focus { border-color: var(--brand); }
.form-stack .hint { font-size: 12px; color: var(--ink-muted); margin-top: 4px; }

/* Buttons */
.btn {
    display: inline-flex; align-items: center; justify-content: center;
    padding: 11px 22px; border-radius: 8px;
    border: 1px solid transparent; cursor: pointer;
    font-family: inherit; font-size: 15px; font-weight: 600;
    text-decoration: none; transition: background .15s, border-color .15s;
}
.btn-primary { background: var(--brand); color: #fff; }
.btn-primary:hover { background: #1f4ec5; }
.btn-ghost { background: transparent; border-color: var(--border); color: var(--ink); }
.btn-ghost:hover { border-color: var(--ink-soft); }
.btn-danger { background: var(--danger); color: #fff; }

/* Layout helpers */
.page-title { font-size: 28px; font-weight: 700; margin: 0 0 8px; }
.page-subtitle { color: var(--ink-muted); margin: 0 0 32px; font-size: 15px; }

/* Module list */
.module-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 16px; }
.module-tile {
    background: #fff; border: 1px solid var(--border); border-radius: var(--radius);
    padding: 20px; text-decoration: none; color: var(--ink); transition: box-shadow .15s, transform .1s;
}
.module-tile:hover { box-shadow: 0 6px 20px rgba(15,23,41,.06); transform: translateY(-1px); }
.module-tile .mod-num { font-size: 11px; text-transform: uppercase; color: var(--ink-muted); letter-spacing: .8px; }
.module-tile .mod-title { font-size: 17px; font-weight: 600; margin: 4px 0 8px; }
.module-tile .mod-summary { font-size: 13px; color: var(--ink-soft); }
.progress-bar { height: 4px; background: #eef0f5; border-radius: 2px; margin-top: 14px; overflow: hidden; }
.progress-bar > span { display: block; height: 100%; background: var(--accent); }

@media (max-width: 640px) {
    .site-header .container { flex-direction: column; align-items: flex-start; }
    .main-nav { flex-wrap: wrap; gap: 12px; }
    .page-title { font-size: 22px; }
}