html {
            -webkit-text-size-adjust: 100%;
            text-size-adjust: 100%;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }

        :root {
            color-scheme: light;
            --bg: #f7f7f8;
            --card: #ffffff;
            --text: #111827;
            --muted: #6b7280;
            --border: #e5e7eb;
            --shadow: 0 4px 12px rgba(15, 23, 42, 0.08);
            --control-bg: #ffffff;
            --control-text: #111827;
            --control-shadow: 0 1px 2px rgba(15, 23, 42, 0.06);
            --primary-bg: #111827;
            --primary-text: #ffffff;
            --ghost-bg: #ffffff;
            --ghost-text: #111827;
            --focus-border: #c7d2fe;
            --focus-ring: rgba(99, 102, 241, 0.15);
            --radius: 12px;
        }

        @media (prefers-color-scheme: dark) {
            :root {
                color-scheme: dark;
                --bg: #0b1020;
                --card: #111827;
                --text: #e5e7eb;
                --muted: #94a3b8;
                --border: #334155;
                --shadow: 0 6px 16px rgba(0, 0, 0, 0.35), 0 1px 0 rgba(148, 163, 184, 0.14);
                --control-bg: #0f172a;
                --control-text: #e5e7eb;
                --control-shadow: inset 0 1px 0 rgba(148, 163, 184, 0.12), 0 1px 2px rgba(0, 0, 0, 0.22);
                --primary-bg: #e5e7eb;
                --primary-text: #0b1020;
                --ghost-bg: #111827;
                --ghost-text: #e5e7eb;
                --focus-border: #60a5fa;
                --focus-ring: rgba(96, 165, 250, 0.25);
            }
        }

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

        .container {
            max-width: 860px;
            margin: 24px auto;
            padding: 0 16px;
        }

        h1 {
            margin: 0;
            font-size: 32px;
            letter-spacing: -0.02em;
        }

        h2 {
            margin: 0 0 10px;
            font-size: 20px;
            letter-spacing: -0.01em;
        }

        .section {
            margin-top: 22px;
        }

        .card {
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            padding: 16px;
        }

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

        .grid > div {
            min-width: 0;
        }

        @media (max-width: 820px) {
            .grid {
                grid-template-columns: 1fr;
            }
        }

        label {
            display: block;
            font-size: 13px;
            color: var(--muted);
            margin-bottom: 6px;
        }

        input, select, button {
            width: 100%;
            box-sizing: border-box;
            padding: 10px 12px;
            font-size: 16px;
            border-radius: 10px;
            border: 1px solid var(--border);
            background: var(--control-bg);
            color: var(--control-text);
        }

        input, select {
            min-height: 40px;
            display: block;
            min-width: 0;
            box-shadow: var(--control-shadow);
        }

        .field-control {
            display: flex;
            width: 100%;
            min-width: 0;
        }

        .field-control > input,
        .field-control > select {
            flex: 1 1 auto;
            min-width: 0;
            width: 1px;
        }

        select {
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
        }

        input:focus, select:focus {
            outline: none;
            border-color: var(--focus-border);
            box-shadow: 0 0 0 3px var(--focus-ring);
        }

        .muted {
            color: var(--muted);
            font-size: 12px;
            margin-top: 6px;
        }

        .actions {
            display: flex;
            gap: 10px;
            align-items: center;
            margin-top: 14px;
        }

        .actions button {
            width: auto;
            padding: 10px 14px;
            min-height: 44px;
            font-size: 16px;
            cursor: pointer;
        }

        button.primary {
            background: var(--primary-bg);
            color: var(--primary-text);
            border-color: var(--primary-bg);
        }

        button.primary:hover {
            filter: brightness(1.05);
        }

        button.ghost {
            background: var(--ghost-bg);
            color: var(--ghost-text);
            border-color: var(--border);
        }

        button.ghost:hover {
            border-color: var(--focus-border);
        }

        ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        li {
            display: flex;
            gap: 12px;
            align-items: center;
            justify-content: space-between;
            border: 1px solid var(--border);
            border-radius: 12px;
            padding: 12px;
            background: var(--card);
            box-shadow: var(--shadow);
            margin: 10px 0;
        }

        li.entry-empty {
            display: block;
            border: 0;
            border-radius: 0;
            background: transparent;
            min-height: 0;
            padding: 0;
            margin: 4px 0 0;
            color: var(--muted);
            font-size: 12px;
            font-weight: 400;
            line-height: 1.4;
            box-shadow: none;
        }

        .entry-main {
            display: flex;
            flex-direction: column;
            gap: 2px;
            min-width: 0;
        }

        .entry-title {
            font-weight: 600;
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
        }

        .entry-sub {
            font-size: 13px;
            color: var(--muted);
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: normal;
            word-break: break-word;
        }

        .entry-delete {
            width: auto;
            padding: 6px 10px;
            font-size: 14px;
            border-radius: 10px;
            cursor: pointer;
            white-space: nowrap;
            flex-shrink: 0;
        }

        .field-row {
            margin-top: 12px;
        }

        .next-open-day {
            margin-top: 8px;
        }

        ::placeholder {
            color: var(--muted);
            opacity: 1;
        }

        @media (max-width: 640px) {
            .container {
                margin: 14px auto;
                padding: 0 12px calc(24px + env(safe-area-inset-bottom));
            }

            h1 {
                font-size: 28px;
            }

            h2 {
                font-size: 18px;
            }

            .section {
                margin-top: 18px;
            }

            .card {
                padding: 14px;
            }

            .actions {
                display: grid;
                grid-template-columns: 1fr 1fr;
                gap: 8px;
            }

            .actions button {
                width: 100%;
                padding: 10px;
            }

            li {
                gap: 10px;
                padding: 10px;
                align-items: flex-start;
            }

            .entry-delete {
                padding: 8px 10px;
                font-size: 14px;
                min-width: 96px;
            }
        }