:root {
            --font: 'Roboto', system-ui, sans-serif;
            --primary: #006a60;
            --on-primary: #ffffff;
            --primary-container: #9cf2e4;
            --on-primary-container: #00201c;
            --secondary: #4a635f;
            --secondary-container: #cce8e2;
            --tertiary: #456179;
            --tertiary-container: #cce5ff;
            --error: #ba1a1a;
            --error-container: #ffdad6;
            --surface: #fbfdfb;
            --surface-container: #eef2ef;
            --surface-container-high: #e8ece9;
            --outline: #6f7976;
            --outline-soft: #d3dbd8;
            --text: #191c1b;
            --muted: #5f6664;
            --blue: #1976d2;
            --red: #d32f2f;
            --gold: #c79a00;
            --radius-l: 24px;
            --radius-m: 16px;
            --radius-s: 10px;
        }

        * { box-sizing: border-box; }
        body {
            margin: 0;
            min-height: 100vh;
            background: linear-gradient(135deg, #f8fbf8 0%, #eef7f4 45%, #f7fbff 100%);
            color: var(--text);
            font-family: var(--font);
        }

        button, input, select, textarea { font-family: inherit; }
        button { cursor: pointer; }

        .login-screen {
            position: fixed;
            inset: 0;
            z-index: 2000;
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 20px;
            background: linear-gradient(135deg, #eef7f4 0%, #fbfdfb 52%, #eaf5ff 100%);
        }
        .login-screen.hidden { display: none; }
        .login-card {
            width: min(420px, 100%);
            padding: 26px;
            border-radius: var(--radius-l);
            background: rgba(255, 255, 255, 0.92);
            border: 1px solid var(--outline-soft);
            box-shadow: 0 24px 80px rgba(0, 72, 64, 0.16);
        }
        .login-error {
            min-height: 20px;
            margin-top: 10px;
            color: var(--error);
            font-size: 0.86rem;
            font-weight: 800;
        }

        body.locked .app-shell { filter: blur(8px); pointer-events: none; user-select: none; }

        .app-shell {
            min-height: 100vh;
            display: grid;
            grid-template-columns: 280px 1fr;
        }

        .sidebar {
            background: rgba(255, 255, 255, 0.74);
            border-right: 1px solid var(--outline-soft);
            padding: 22px;
            display: flex;
            flex-direction: column;
            gap: 18px;
            position: sticky;
            top: 0;
            height: 100vh;
            backdrop-filter: blur(18px);
        }

        .brand {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 6px 4px 14px;
            border-bottom: 1px solid var(--outline-soft);
        }

        .brand-icon {
            width: 48px;
            height: 48px;
            border-radius: 16px;
            display: grid;
            place-items: center;
            background: var(--primary-container);
            color: var(--on-primary-container);
        }

        .brand-title { font-size: 1.05rem; font-weight: 900; line-height: 1.15; }
        .brand-subtitle { color: var(--muted); font-size: 0.78rem; margin-top: 4px; }

        .nav-list { display: flex; flex-direction: column; gap: 6px; }
        .nav-item {
            border: 0;
            border-radius: 999px;
            padding: 12px 14px;
            display: flex;
            align-items: center;
            gap: 12px;
            background: transparent;
            color: var(--secondary);
            font-weight: 700;
            text-align: left;
        }
        .nav-item:hover { background: var(--surface-container); }
        .nav-item.active { background: var(--secondary-container); color: #06201c; }
        .nav-item .material-icons-round { font-size: 22px; }

        .room-card {
            margin-top: auto;
            padding: 16px;
            border-radius: var(--radius-m);
            background: var(--surface-container);
            border: 1px solid var(--outline-soft);
        }
        .room-label { color: var(--muted); font-size: 0.78rem; font-weight: 700; text-transform: uppercase; }
        .room-id { font-size: 2rem; font-weight: 900; color: var(--primary); line-height: 1.1; margin-top: 6px; }
        .room-status { margin-top: 8px; font-size: 0.85rem; color: var(--muted); }

        .main {
            padding: 24px;
            display: flex;
            flex-direction: column;
            gap: 18px;
            min-width: 0;
        }

        .topbar {
            min-height: 86px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 18px;
            padding: 22px 24px;
            border-radius: var(--radius-l);
            background: rgba(255, 255, 255, 0.82);
            border: 1px solid var(--outline-soft);
            box-shadow: 0 10px 30px rgba(0, 72, 64, 0.08);
        }

        h1 { margin: 0; font-size: 1.8rem; color: var(--primary); }
        .topbar p { margin: 6px 0 0; color: var(--muted); }
        .top-actions { display: flex; flex-wrap: wrap; gap: 10px; justify-content: flex-end; }

        .grid {
            display: grid;
            grid-template-columns: minmax(0, 1.45fr) minmax(360px, 0.9fr);
            gap: 18px;
            align-items: start;
        }

        .section-stack { display: flex; flex-direction: column; gap: 18px; min-width: 0; }
        .panel {
            background: rgba(255, 255, 255, 0.9);
            border: 1px solid var(--outline-soft);
            border-radius: var(--radius-l);
            padding: 20px;
            box-shadow: 0 8px 24px rgba(32, 56, 52, 0.06);
            min-width: 0;
        }

        .panel-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            margin-bottom: 14px;
        }
        .panel-title {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.05rem;
            font-weight: 900;
            color: var(--on-primary-container);
        }
        .panel-title .material-icons-round { color: var(--primary); }
        .panel-note { color: var(--muted); font-size: 0.86rem; line-height: 1.45; }

        .btn {
            border: 0;
            border-radius: 999px;
            padding: 11px 16px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-weight: 800;
            color: var(--primary);
            background: var(--primary-container);
            min-height: 42px;
        }
        .btn:hover { filter: brightness(0.97); transform: translateY(-1px); }
        .btn.primary { background: var(--primary); color: var(--on-primary); }
        .btn.tonal { background: var(--secondary-container); color: #1d3632; }
        .btn.warn { background: var(--error-container); color: #410002; }
        .btn.flat { background: transparent; color: var(--primary); }
        .btn.small { padding: 8px 12px; min-height: 34px; font-size: 0.84rem; }
        .btn:disabled { background: #dfe5e2; color: #8a9290; cursor: not-allowed; transform: none; }

        .field-grid {
            display: grid;
            grid-template-columns: repeat(2, minmax(0, 1fr));
            gap: 12px;
        }

        .field { display: flex; flex-direction: column; gap: 6px; min-width: 0; }
        .field label { font-size: 0.82rem; font-weight: 800; color: var(--muted); }
        .input, .select, .textarea {
            width: 100%;
            border: 1px solid var(--outline-soft);
            border-radius: 12px;
            background: #ffffff;
            color: var(--text);
            padding: 11px 12px;
            outline: none;
            font-size: 0.95rem;
        }
        .textarea { min-height: 82px; resize: vertical; line-height: 1.45; }
        .input:focus, .select:focus, .textarea:focus { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(0, 106, 96, 0.12); }

        .upload-row { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
        .upload-card {
            border: 1px dashed var(--outline);
            border-radius: var(--radius-m);
            padding: 16px;
            background: #ffffff;
            display: flex;
            flex-direction: column;
            gap: 10px;
            min-height: 150px;
        }
        .upload-card input { display: none; }
        .stat-row { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 10px; }
        .stat {
            padding: 14px;
            border-radius: var(--radius-m);
            background: var(--surface-container);
            border: 1px solid var(--outline-soft);
        }
        .stat-value { font-size: 1.6rem; font-weight: 900; color: var(--primary); }
        .stat-label { color: var(--muted); font-size: 0.78rem; font-weight: 700; margin-top: 3px; }

        .character-toolbar, .team-toolbar, .rules-toolbar {
            display: flex;
            gap: 10px;
            flex-wrap: wrap;
            align-items: center;
            margin-bottom: 12px;
        }
        .search-input { flex: 1; min-width: 220px; }

        .character-list {
            display: grid;
            grid-template-columns: 1fr;
            gap: 10px;
            max-height: 520px;
            overflow: auto;
            padding-right: 4px;
        }
        .character-card {
            display: grid;
            grid-template-columns: 76px 1fr;
            gap: 12px;
            padding: 12px;
            border-radius: var(--radius-m);
            border: 1px solid var(--outline-soft);
            background: #ffffff;
        }
        .character-editor { align-items: center; }
        .character-avatar-cell {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 6px;
        }
        .character-editor-main { min-width: 0; }
        .character-editor-title {
            display: flex;
            align-items: flex-start;
            justify-content: space-between;
            gap: 10px;
            margin-bottom: 10px;
        }
        .character-editor-grid {
            display: grid;
            grid-template-columns: 150px minmax(140px, 1fr) minmax(180px, 1.1fr) minmax(160px, 1fr);
            gap: 10px;
            align-items: end;
        }
        .character-editor-grid label {
            display: flex;
            flex-direction: column;
            gap: 5px;
            color: var(--muted);
            font-size: 0.74rem;
            font-weight: 900;
        }
        .input.compact, .select.compact {
            min-height: 36px;
            padding: 8px 10px;
            font-size: 0.86rem;
            border-radius: 10px;
        }
        .avatar {
            width: 58px;
            height: 58px;
            border-radius: 50%;
            background: var(--surface-container-high);
            object-fit: cover;
            border: 2px solid #ffffff;
            box-shadow: 0 2px 8px rgba(0,0,0,0.12);
        }
        .avatar.square { border-radius: 12px; }
        .character-name { font-weight: 900; margin-bottom: 3px; }
        .character-file { color: var(--muted); font-size: 0.78rem; word-break: break-all; }
        .chip-row { display: flex; gap: 6px; flex-wrap: wrap; margin-top: 8px; }
        .chip {
            display: inline-flex;
            align-items: center;
            gap: 5px;
            padding: 4px 8px;
            border-radius: 999px;
            background: var(--surface-container);
            color: var(--secondary);
            font-size: 0.75rem;
            font-weight: 800;
        }
        .chip.element { background: #fff4cc; color: #6f5100; }
        .chip.role { background: var(--tertiary-container); color: #0b3048; }
        .chip.missing { background: var(--error-container); color: #410002; }

        .team-table { width: 100%; border-collapse: collapse; }
        .team-table th, .team-table td { padding: 10px 8px; border-bottom: 1px solid var(--outline-soft); text-align: left; }
        .team-table th { color: var(--muted); font-size: 0.78rem; text-transform: uppercase; }
        .team-table input { min-width: 74px; }
        .team-color {
            width: 10px;
            height: 42px;
            border-radius: 999px;
            background: var(--primary);
        }
        .team-color.blue { background: var(--blue); }
        .team-color.red { background: var(--red); }

        .link-list { display: flex; flex-direction: column; gap: 10px; }
        .room-list { display: flex; flex-direction: column; gap: 8px; }
        .room-list-item {
            display: grid;
            grid-template-columns: 1fr auto;
            gap: 10px;
            align-items: center;
            padding: 10px 12px;
            border-radius: 14px;
            background: #ffffff;
            border: 1px solid var(--outline-soft);
        }
        .room-list-main { min-width: 0; }
        .room-list-id { font-weight: 900; color: var(--primary); }
        .room-list-meta { color: var(--muted); font-size: 0.78rem; margin-top: 2px; }
        .room-list-actions { display: flex; flex-wrap: wrap; gap: 8px; justify-content: flex-end; }
        .link-item {
            display: grid;
            grid-template-columns: 86px 1fr auto;
            gap: 8px;
            align-items: center;
            padding: 10px;
            border-radius: 14px;
            background: #ffffff;
            border: 1px solid var(--outline-soft);
        }
        .link-type { font-weight: 900; color: var(--primary); }
        .link-url { font-family: Consolas, monospace; color: var(--muted); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

        .flow-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; }
        .flow-card {
            padding: 14px;
            border-radius: var(--radius-m);
            background: var(--surface-container);
            border: 1px solid var(--outline-soft);
        }
        .flow-label { color: var(--muted); font-size: 0.78rem; font-weight: 800; }
        .flow-value { margin-top: 5px; font-size: 1.15rem; font-weight: 900; }
        .element-strip { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 12px; }
        .element-btn {
            border: 1px solid var(--outline-soft);
            background: #ffffff;
            color: var(--text);
            border-radius: 999px;
            padding: 9px 12px;
            font-weight: 800;
        }
        .element-btn.active { background: #fff0b3; color: #604600; border-color: var(--gold); }

        .snapshot-list { display: flex; flex-direction: column; gap: 8px; max-height: 240px; overflow: auto; }
        .snapshot-item {
            display: flex;
            justify-content: space-between;
            gap: 10px;
            padding: 10px;
            border-radius: 12px;
            background: #ffffff;
            border: 1px solid var(--outline-soft);
            color: var(--muted);
            font-size: 0.84rem;
        }

        .log-list { display: flex; flex-direction: column; gap: 8px; max-height: 300px; overflow: auto; }
        .log-item {
            padding: 10px 12px;
            background: #ffffff;
            border: 1px solid var(--outline-soft);
            border-radius: 12px;
            font-size: 0.86rem;
        }
        .log-time { color: var(--muted); font-size: 0.75rem; margin-bottom: 3px; }

        .admin-list { display: flex; flex-direction: column; gap: 8px; }
        .admin-item {
            display: grid;
            grid-template-columns: 1fr auto;
            gap: 10px;
            align-items: center;
            padding: 12px;
            border-radius: 14px;
            background: #ffffff;
            border: 1px solid var(--outline-soft);
        }
        .admin-name { font-weight: 900; }
        .admin-role { margin-top: 3px; color: var(--muted); font-size: 0.78rem; }

        .modal-overlay {
            position: fixed;
            inset: 0;
            display: none;
            align-items: center;
            justify-content: center;
            background: rgba(0, 0, 0, 0.36);
            z-index: 1000;
            padding: 20px;
        }
        .modal-overlay.active { display: flex; }
        .modal {
            width: min(760px, 100%);
            max-height: 88vh;
            overflow: auto;
            background: var(--surface);
            border-radius: var(--radius-l);
            padding: 22px;
            box-shadow: 0 24px 80px rgba(0,0,0,0.28);
        }
        .modal-header { display: flex; justify-content: space-between; align-items: center; gap: 12px; margin-bottom: 16px; }
        .modal-title { font-size: 1.2rem; font-weight: 900; color: var(--primary); }

        .hidden { display: none !important; }

        @media (max-width: 1200px) {
            .app-shell { grid-template-columns: 1fr; }
            .sidebar { position: static; height: auto; }
            .grid { grid-template-columns: 1fr; }
        }

        @media (max-width: 720px) {
            .main { padding: 12px; }
            .topbar { align-items: flex-start; flex-direction: column; }
            .field-grid, .upload-row, .stat-row, .flow-grid { grid-template-columns: 1fr; }
            .link-item { grid-template-columns: 1fr; }
            .character-card { grid-template-columns: 1fr; }
            .character-editor-grid { grid-template-columns: 1fr; }
        }