:root {
    --bg: #f4f5f7;
    --surface: #ffffff;
    --border: #e3e5e9;
    --text: #1a1d23;
    --text-muted: #6b7280;
    --accent: #4f46e5;
    --accent-contrast: #ffffff;
    --danger: #dc2626;
    --success: #16a34a;
    --warning: #d97706;
    --info: #2563eb;
    --radius: 10px;
}

@media (prefers-color-scheme: dark) {
    :root {
        --bg: #14161a;
        --surface: #1d2026;
        --border: #2b2f37;
        --text: #e7e9ec;
        --text-muted: #9aa0aa;
        --accent: #818cf8;
        --accent-contrast: #14161a;
    }
}

* { box-sizing: border-box; }

body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background: var(--bg);
    color: var(--text);
}

a { color: var(--accent); text-decoration: none; }

.topbar {
    background: var(--surface);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 10;
}
.topbar-inner {
    max-width: 1100px;
    margin: 0 auto;
    padding: 14px 20px;
    display: flex;
    align-items: center;
    gap: 24px;
}
.brand { font-weight: 700; font-size: 1.15rem; color: var(--text); }
.nav { display: flex; gap: 4px; flex: 1; }
.nav a {
    padding: 8px 14px;
    border-radius: 8px;
    color: var(--text-muted);
    font-weight: 500;
    font-size: 0.92rem;
}
.nav a:hover { background: var(--bg); color: var(--text); }
.nav a.active { background: var(--accent); color: var(--accent-contrast); }
.logout { color: var(--text-muted); font-size: 0.9rem; }
.logout:hover { color: var(--danger); }

.container { max-width: 1100px; margin: 0 auto; padding: 28px 20px 60px; }

h1 { font-size: 1.5rem; margin: 0 0 16px; }
h2 { font-size: 1.05rem; margin: 0 0 14px; }
.muted { color: var(--text-muted); }
.back { display: inline-block; margin-bottom: 16px; font-size: 0.9rem; }

/* --- Login --- */
.login-wrap { display: flex; justify-content: center; padding-top: 10vh; }
.login-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 32px;
    width: 320px;
    display: flex;
    flex-direction: column;
    gap: 14px;
}
.login-card h1 { margin-bottom: 0; }
.login-card label { display: flex; flex-direction: column; gap: 6px; font-size: 0.88rem; color: var(--text-muted); }
.login-card input {
    padding: 9px 11px;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: var(--bg);
    color: var(--text);
    font-size: 0.95rem;
}
.login-card button {
    margin-top: 6px;
    padding: 10px;
    border: none;
    border-radius: 8px;
    background: var(--accent);
    color: var(--accent-contrast);
    font-weight: 600;
    cursor: pointer;
}
.alert {
    background: rgba(220, 38, 38, 0.12);
    color: var(--danger);
    padding: 8px 12px;
    border-radius: 8px;
    font-size: 0.88rem;
}

/* --- Dashboard --- */
.page-head { display: flex; justify-content: space-between; align-items: center; margin-bottom: 18px; }
.filter select {
    padding: 7px 10px;
    border-radius: 8px;
    border: 1px solid var(--border);
    background: var(--surface);
    color: var(--text);
}

.card-list { display: flex; flex-direction: column; gap: 10px; }
.item-card {
    display: block;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 14px 16px;
    color: var(--text);
    transition: border-color 0.15s;
}
.item-card:hover { border-color: var(--accent); }
.item-card-top { display: flex; justify-content: space-between; align-items: center; margin-bottom: 6px; }
.item-id { color: var(--text-muted); font-size: 0.85rem; }
.item-title { font-weight: 600; }
.item-sub { color: var(--text-muted); font-size: 0.9rem; }
.item-meta { display: flex; gap: 16px; margin-top: 8px; font-size: 0.85rem; color: var(--text-muted); }

/* --- Badges --- */
.badge {
    display: inline-block;
    padding: 3px 10px;
    border-radius: 999px;
    font-size: 0.78rem;
    font-weight: 600;
    white-space: nowrap;
    background: var(--bg);
    color: var(--text-muted);
    border: 1px solid var(--border);
}
.status-waiting_response, .status-new { color: var(--warning); border-color: var(--warning); }
.status-waiting_brief, .status-invited { color: var(--info); border-color: var(--info); }
.status-in_progress { color: var(--accent); border-color: var(--accent); }
.status-completed, .status-hired { color: var(--success); border-color: var(--success); }
.status-rejected { color: var(--danger); border-color: var(--danger); }

/* --- Detail pages --- */
.detail-head { display: flex; align-items: center; gap: 12px; margin-bottom: 20px; }
.detail-head h1 { margin: 0; }
.detail-grid { display: grid; grid-template-columns: 320px 1fr; gap: 18px; align-items: start; }
@media (max-width: 800px) { .detail-grid { grid-template-columns: 1fr; } }

.panel-box {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 18px;
}

.info-list { display: grid; grid-template-columns: auto 1fr; gap: 6px 12px; margin: 0 0 16px; font-size: 0.92rem; }
.info-list dt { color: var(--text-muted); }
.info-list dd { margin: 0; }

.inline-form { display: flex; align-items: end; gap: 10px; margin-top: 12px; }
.inline-form label { display: flex; flex-direction: column; gap: 4px; font-size: 0.82rem; color: var(--text-muted); flex: 1; }
.inline-form select, .inline-form input {
    padding: 7px 9px;
    border-radius: 7px;
    border: 1px solid var(--border);
    background: var(--bg);
    color: var(--text);
}
.inline-form button, .reply-form button {
    padding: 8px 16px;
    border: none;
    border-radius: 7px;
    background: var(--accent);
    color: var(--accent-contrast);
    font-weight: 600;
    cursor: pointer;
    white-space: nowrap;
}

/* --- Thread --- */
.thread { display: flex; flex-direction: column; gap: 10px; max-height: 60vh; overflow-y: auto; margin-bottom: 14px; padding-right: 4px; }
.msg { padding: 10px 12px; border-radius: 10px; max-width: 85%; background: var(--bg); }
.msg-client { align-self: flex-start; }
.msg-admin { align-self: flex-end; background: var(--accent); color: var(--accent-contrast); }
.msg-admin .msg-meta { color: rgba(255,255,255,0.75); }
.msg-meta { font-size: 0.75rem; color: var(--text-muted); margin-bottom: 4px; }
.msg-text { white-space: pre-wrap; word-break: break-word; }
.msg-photo, .msg-media { max-width: 100%; border-radius: 8px; display: block; margin-top: 4px; }
.msg-file { display: inline-block; margin-top: 4px; }

.reply-form { display: flex; gap: 10px; }
.reply-form textarea {
    flex: 1;
    padding: 9px 11px;
    border-radius: 8px;
    border: 1px solid var(--border);
    background: var(--bg);
    color: var(--text);
    font-family: inherit;
    resize: vertical;
}

/* --- Stats --- */
.stat-cards { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; margin-bottom: 22px; }
@media (max-width: 800px) { .stat-cards { grid-template-columns: repeat(2, 1fr); } }
.stat-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 16px;
    text-align: center;
}
.stat-value { font-size: 1.5rem; font-weight: 700; }
.stat-label { font-size: 0.82rem; color: var(--text-muted); margin-top: 4px; }

.table { width: 100%; border-collapse: collapse; font-size: 0.92rem; }
.table th, .table td { text-align: left; padding: 7px 4px; border-bottom: 1px solid var(--border); }
.table .num { text-align: right; }

/* --- Settings / управление ботом --- */
.panel-box + .panel-box { margin-top: 18px; }
.panel-box form:not(.inline-form):not(.rubrics-form) { margin-top: 10px; }
.panel-box button {
    padding: 8px 16px;
    border: none;
    border-radius: 7px;
    background: var(--accent);
    color: var(--accent-contrast);
    font-weight: 600;
    cursor: pointer;
}
.table-wrap { overflow-x: auto; margin: 10px 0; }
.spheres-table td { vertical-align: middle; }
.rubrics-form { display: flex; gap: 6px; }
.rubrics-form input {
    min-width: 220px;
    padding: 6px 8px;
    border-radius: 6px;
    border: 1px solid var(--border);
    background: var(--bg);
    color: var(--text);
}
.rubrics-form button { padding: 6px 10px; background: transparent; border: 1px solid var(--border); }
.actions { display: flex; gap: 6px; white-space: nowrap; }
.actions button { padding: 6px 10px; font-size: 0.85rem; }
.actions .danger { background: transparent; border: 1px solid var(--danger); color: var(--danger); }
.add-sphere-form { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 12px; }
.add-sphere-form input {
    flex: 1;
    min-width: 160px;
    padding: 8px 10px;
    border-radius: 7px;
    border: 1px solid var(--border);
    background: var(--bg);
    color: var(--text);
}