:root {
    color-scheme: light dark;

    --bg: #f4f5f7;
    --bg-elevated: #ffffff;
    --border: #e2e5e9;
    --text: #1b1f24;
    --text-muted: #6b7280;
    --text-faint: #9aa1ab;

    --accent: #4f46e5;
    --accent-hover: #4338ca;
    --accent-soft: #eef0fe;
    --accent-soft-text: #4338ca;

    --success: #16a34a;
    --success-soft: #e8f8ee;
    --danger: #dc2626;
    --danger-soft: #fdecec;

    --radius-sm: 6px;
    --radius: 10px;
    --radius-lg: 14px;

    --shadow: 0 1px 2px rgba(16,24,40,.04), 0 1px 3px rgba(16,24,40,.06);
    --shadow-md: 0 8px 24px rgba(16,24,40,.10);

    --sidebar-width: 240px;
    --topbar-height: 64px;
}

@media (prefers-color-scheme: dark) {
    :root {
        --bg: #101317;
        --bg-elevated: #181c22;
        --border: #262b33;
        --text: #e8eaed;
        --text-muted: #9aa1ab;
        --text-faint: #6b7280;

        --accent: #6d66f0;
        --accent-hover: #8079f5;
        --accent-soft: #201f3a;
        --accent-soft-text: #b5b0fa;

        --success: #34d071;
        --success-soft: #123322;
        --danger: #f36a6a;
        --danger-soft: #3a1c1c;

        --shadow: 0 1px 2px rgba(0,0,0,.35);
        --shadow-md: 0 8px 24px rgba(0,0,0,.45);
    }
}

* { box-sizing: border-box; }

body {
    margin: 0;
    background: var(--bg);
    color: var(--text);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    font-size: 15px;
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
}

a { color: inherit; }
h1, h2 { line-height: 1.25; }

:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
}

/* Topbar */
.topbar {
    height: var(--topbar-height);
    background: var(--bg-elevated);
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 24px;
    position: sticky;
    top: 0;
    z-index: 10;
}
.brand { display: flex; align-items: center; text-decoration: none; }
.brand-logo { height: 36px; width: auto; display: block; }
.user { display: flex; align-items: center; gap: 16px; font-size: 14px; color: var(--text-muted); }
.user-name { font-weight: 500; color: var(--text); }
.logout {
    color: var(--text-muted);
    text-decoration: none;
    padding: 6px 12px;
    border-radius: var(--radius-sm);
    transition: background .15s, color .15s;
}
.logout:hover { background: var(--danger-soft); color: var(--danger); }

/* Layout + sidebar */
.layout { display: flex; align-items: flex-start; min-height: calc(100vh - var(--topbar-height)); }
.sidebar {
    width: var(--sidebar-width);
    flex-shrink: 0;
    background: var(--bg-elevated);
    border-right: 1px solid var(--border);
    padding: 20px 12px;
    position: sticky;
    top: var(--topbar-height);
    height: calc(100vh - var(--topbar-height));
    overflow-y: auto;
}
.nav { display: flex; flex-direction: column; gap: 2px; margin-bottom: 20px; }
.menu {
    display: block;
    padding: 10px 12px;
    border-radius: var(--radius-sm);
    color: var(--text);
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    transition: background .15s, color .15s;
}
.menu:hover { background: var(--bg); }
.menu.active { background: var(--accent-soft); color: var(--accent-soft-text); }

.sidebar-title {
    font-size: 11px;
    font-weight: 600;
    color: var(--text-faint);
    text-transform: uppercase;
    letter-spacing: .04em;
    margin: 8px 12px 6px;
}
.client-list { display: flex; flex-direction: column; gap: 2px; }
.client-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 8px;
    padding: 8px 12px;
    border-radius: var(--radius-sm);
    color: var(--text-muted);
    text-decoration: none;
    font-size: 13.5px;
    transition: background .15s, color .15s;
}
.client-item span:first-child { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.client-item:hover { background: var(--bg); color: var(--text); }
.client-item.active { background: var(--bg); color: var(--text); font-weight: 600; }
.count {
    font-size: 11px;
    color: var(--text-faint);
    background: var(--bg);
    padding: 1px 7px;
    border-radius: 999px;
}

.main { flex: 1; min-width: 0; padding: 28px 32px; }

/* Page header */
.page-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 16px;
    margin-bottom: 24px;
    flex-wrap: wrap;
}
.page-header h1 { margin: 0; font-size: 22px; font-weight: 650; }
.page-header p, .subtitle { margin: 4px 0 0; color: var(--text-muted); font-size: 14px; }

/* Buttons */
.button, button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 10px 16px;
    border: 1px solid transparent;
    border-radius: var(--radius-sm);
    font-size: 13.5px;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    font-family: inherit;
    transition: background .15s, border-color .15s, color .15s;
    background: var(--accent);
    color: #fff;
}
.button:hover, button:hover { background: var(--accent-hover); }
.button.secondary {
    background: var(--bg-elevated);
    color: var(--text);
    border-color: var(--border);
}
.button.secondary:hover { background: var(--bg); }

.btn-password { background: var(--accent-soft); color: var(--accent-soft-text); }
.btn-password:hover { background: var(--accent); color: #fff; }
.btn-delete, .action.delete, .delete { background: var(--danger-soft); color: var(--danger); }
.btn-delete:hover, .action.delete:hover, .delete:hover { background: var(--danger); color: #fff; }

.edit, .action.edit {
    background: var(--bg);
    color: var(--text);
    border: 1px solid var(--border);
}
.edit:hover, .action.edit:hover { background: var(--border); }

.connect { background: var(--success); color: #fff; }
.connect:hover { background: #128a3e; }

.action.show { background: var(--accent-soft); color: var(--accent-soft-text); }
.action.show:hover { background: var(--accent); color: #fff; }

.action, .edit, .delete, .connect {
    display: inline-flex;
    align-items: center;
    padding: 7px 11px;
    border-radius: var(--radius-sm);
    text-decoration: none;
    font-size: 12px;
    font-weight: 600;
    border: none;
    cursor: pointer;
    font-family: inherit;
}

/* Cards */
.card {
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 22px;
    margin-bottom: 20px;
    box-shadow: var(--shadow);
}
.card h2 { margin: 0 0 16px; font-size: 16px; font-weight: 650; }

/* Forms */
.form-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
.form-grid.cols-4 { grid-template-columns: repeat(4, 1fr); }
.field { margin-bottom: 16px; }
.field.full { grid-column: 1 / -1; }
label { display: block; font-size: 13px; font-weight: 600; margin-bottom: 6px; color: var(--text-muted); }
input, select, textarea {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    font-size: 14px;
    background: var(--bg-elevated);
    color: var(--text);
    font-family: inherit;
    transition: border-color .15s, box-shadow .15s;
}
input:focus, select:focus, textarea:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-soft);
}
textarea { min-height: 90px; resize: vertical; }
.buttons { display: flex; gap: 10px; margin-top: 6px; }

/* Alerts */
.error, .message {
    padding: 12px 14px;
    border-radius: var(--radius-sm);
    margin-bottom: 18px;
    font-size: 14px;
}
.error { background: var(--danger-soft); color: var(--danger); }
.message { background: var(--success-soft); color: var(--success); }

/* Stats */
.stats { display: flex; gap: 16px; margin-bottom: 22px; }
.stat { min-width: 200px; }
.stat {
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 18px 20px;
    box-shadow: var(--shadow);
}
.stat-label { color: var(--text-muted); font-size: 13px; margin-bottom: 6px; }
.stat-value { font-size: 26px; font-weight: 700; }
.stat-value.online { color: var(--success); }
.stat-value.offline { color: var(--text-muted); }

/* Toolbar / search */
.toolbar {
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    border-radius: var(--radius) var(--radius) 0 0;
    padding: 12px;
    display: flex;
    gap: 10px;
}
.search {
    flex: 1;
    padding: 10px 12px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    font-size: 14px;
}
.search-button {
    padding: 10px 16px;
    border: 1px solid var(--border);
    background: var(--bg);
    color: var(--text);
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-weight: 600;
    font-size: 13px;
}
.search-button:hover { background: var(--border); }

/* Table */
.table-wrap {
    overflow-x: auto;
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    border-radius: var(--radius);
}
.table-wrap.attached { border-top: 0; border-radius: 0 0 var(--radius) var(--radius); }
table { width: 100%; border-collapse: collapse; }
th {
    text-align: left;
    font-size: 11.5px;
    text-transform: uppercase;
    letter-spacing: .03em;
    color: var(--text-faint);
    background: var(--bg);
    padding: 12px 16px;
    border-bottom: 1px solid var(--border);
}
td { padding: 14px 16px; border-bottom: 1px solid var(--border); font-size: 14px; }
tr:last-child td { border-bottom: 0; }
tbody tr:hover { background: var(--bg); }
.computer-name, .client-name { font-weight: 600; }
.rustdesk-id { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; color: var(--text-muted); font-size: 13px; }
.description { color: var(--text-muted); }

.rustdesk-password { margin-top: 4px; font-size: 12px; color: var(--text-muted); display: flex; align-items: center; gap: 6px; }
.rustdesk-password code { font-family: ui-monospace, monospace; letter-spacing: .5px; }
.password-actions { display: inline-flex; gap: 4px; }
.password-btn {
    border: 1px solid var(--border);
    background: var(--bg-elevated);
    border-radius: 5px;
    padding: 2px 6px;
    cursor: pointer;
    font-size: 11px;
    color: var(--text-muted);
}
.password-btn:hover { background: var(--bg); }

.status {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 12.5px;
    font-weight: 600;
    padding: 3px 10px;
    border-radius: 999px;
}
.status.online { background: var(--success-soft); color: var(--success); }
.status.offline { background: var(--bg); color: var(--text-faint); }
.dot { width: 7px; height: 7px; border-radius: 50%; background: currentColor; }
.last-seen { display: block; margin-top: 5px; margin-left: 2px; font-size: 11px; color: var(--text-faint); }

.actions { display: flex; gap: 6px; flex-wrap: wrap; }

.role-admin { font-weight: 600; }
.role-user { color: var(--text-muted); }

.password-form {
    display: none;
    margin-top: 10px;
    padding: 14px;
    background: var(--bg);
    border-radius: var(--radius-sm);
    border: 1px solid var(--border);
}
.password-form input { margin-bottom: 8px; }

.empty { text-align: center; padding: 48px 20px; color: var(--text-muted); }
.empty-icon { font-size: 34px; margin-bottom: 10px; }

/* Downloads */
.download-item { display: flex; justify-content: space-between; align-items: center; gap: 20px; flex-wrap: wrap; }
.download-info h2 { margin: 0 0 6px; font-size: 16px; }
.download-info p { margin: 0; color: var(--text-muted); line-height: 1.5; font-size: 13.5px; }
.file-name { margin-top: 8px; font-size: 11.5px; color: var(--text-faint); font-family: ui-monospace, monospace; }

/* Login */
.login-wrap {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}
.login-box {
    width: 100%;
    max-width: 380px;
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    padding: 36px 32px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
}
.login-logo { display: block; height: 60px; width: auto; margin: 0 auto 18px; }
.login-box h1 { margin: 0 0 6px; text-align: center; font-size: 19px; }
.login-box .subtitle { text-align: center; margin-bottom: 26px; }
.login-box button { width: 100%; }

@media (max-width: 900px) {
    .sidebar { display: none; }
    .stats { grid-template-columns: 1fr; }
    .main { padding: 18px; }
    .form-grid, .form-grid.cols-4 { grid-template-columns: 1fr; }
    .field.full { grid-column: auto; }
    .page-header { flex-direction: column; align-items: flex-start; }
}

/* Logo zależne od motywu */
.logo-dark { display: none; }
@media (prefers-color-scheme: dark) {
    .logo-light { display: none; }
    .logo-dark { display: block; }
}

.text-danger { color: var(--danger); font-size: 12px; display: block; margin-top: 4px; }
.text-muted-small { color: var(--text-faint); font-size: 12px; display: block; margin-top: 4px; }

/* ---- 2FA ---- */

.tfa-box {
    max-width: 420px;
}

.qr-wrap {
    display: flex;
    justify-content: center;
    align-items: center;
    background: #ffffff;
    border-radius: 8px;
    padding: 16px;
    margin: 16px 0;
    min-height: 200px;
}

.manual-key {
    margin: 12px 0 20px;
    text-align: center;
}

.manual-key label {
    display: block;
    font-size: 0.85em;
    color: var(--text-muted, #888);
    margin-bottom: 6px;
}

.manual-key code {
    display: inline-block;
    background: var(--card-bg-alt, rgba(127, 127, 127, 0.15));
    padding: 8px 12px;
    border-radius: 6px;
    font-size: 1.05em;
    letter-spacing: 1px;
    word-break: break-all;
}

.tfa-cancel {
    text-align: center;
    margin-top: 16px;
}

.tfa-cancel a {
    font-size: 0.9em;
    color: var(--text-muted, #888);
    text-decoration: none;
}

.tfa-cancel a:hover {
    text-decoration: underline;
}

.backup-codes-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
    margin: 20px 0;
}

.backup-codes-grid code {
    display: block;
    text-align: center;
    background: var(--card-bg-alt, rgba(127, 127, 127, 0.15));
    padding: 10px;
    border-radius: 6px;
    font-size: 1.1em;
    letter-spacing: 1px;
}

/* ---- 2FA ---- */

.tfa-box {
    max-width: 420px;
}

.qr-wrap {
    display: flex;
    justify-content: center;
    align-items: center;
    background: #ffffff;
    border-radius: 8px;
    padding: 16px;
    margin: 16px 0;
    min-height: 200px;
}

.manual-key {
    margin: 12px 0 20px;
    text-align: center;
}

.manual-key label {
    display: block;
    font-size: 0.85em;
    color: var(--text-muted, #888);
    margin-bottom: 6px;
}

.manual-key code {
    display: inline-block;
    background: var(--card-bg-alt, rgba(127, 127, 127, 0.15));
    padding: 8px 12px;
    border-radius: 6px;
    font-size: 1.05em;
    letter-spacing: 1px;
    word-break: break-all;
}

.tfa-cancel {
    text-align: center;
    margin-top: 16px;
}

.tfa-cancel a {
    font-size: 0.9em;
    color: var(--text-muted, #888);
    text-decoration: none;
}

.tfa-cancel a:hover {
    text-decoration: underline;
}

.backup-codes-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
    margin: 20px 0;
}

.backup-codes-grid code {
    display: block;
    text-align: center;
    background: var(--card-bg-alt, rgba(127, 127, 127, 0.15));
    padding: 10px;
    border-radius: 6px;
    font-size: 1.1em;
    letter-spacing: 1px;
}