:root {
    --fg: #1c1c1c;
    --bg: #f6f6f6;
    --card: #ffffff;
    --accent: #2a5fb4;
    --warn-bg: #fff3cd;
    --warn-fg: #7a5800;
    --ok-bg: #e6f4ea;
    --ok-fg: #1e6b32;
    --err-bg: #fdecea;
    --err-fg: #a8261e;
}

* { box-sizing: border-box; }

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

.topbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.8rem 1.5rem;
    background: var(--card);
    border-bottom: 1px solid #e3e3e3;
}

.topbar .brand { font-weight: 700; letter-spacing: 0.05em; }
.topbar .lang a {
    text-decoration: none;
    color: var(--accent);
    border: 1px solid var(--accent);
    padding: 0.2rem 0.6rem;
    border-radius: 0.4rem;
}

main {
    max-width: 36rem;
    margin: 2rem auto;
    padding: 0 1rem;
}

.connect {
    background: var(--card);
    border: 1px solid #e3e3e3;
    border-radius: 0.6rem;
    padding: 1.5rem;
}

.connect h1 { margin-top: 0; }

form label {
    display: flex;
    flex-direction: column;
    margin-bottom: 1rem;
    gap: 0.3rem;
}

form input {
    padding: 0.5rem 0.6rem;
    font-size: 1rem;
    border: 1px solid #c8c8c8;
    border-radius: 0.4rem;
}

form input:focus { outline: 2px solid var(--accent); }

form button {
    padding: 0.6rem 1.2rem;
    font-size: 1rem;
    background: var(--accent);
    color: #fff;
    border: 0;
    border-radius: 0.4rem;
    cursor: pointer;
}

.result {
    margin-top: 1.5rem;
    padding: 1rem;
    border: 1px solid #d8d8d8;
    border-radius: 0.5rem;
    background: #fafafa;
}

.result dl {
    display: grid;
    grid-template-columns: max-content 1fr;
    column-gap: 1rem;
    row-gap: 0.4rem;
    margin: 0;
}

.result dt { font-weight: 600; color: #555; }
.result dd { margin: 0; }

.warn, .ok, .error {
    margin-top: 1rem;
    padding: 0.6rem 0.8rem;
    border-radius: 0.4rem;
    font-size: 0.95rem;
}

.warn { background: var(--warn-bg); color: var(--warn-fg); }
.ok { background: var(--ok-bg); color: var(--ok-fg); }
.error { background: var(--err-bg); color: var(--err-fg); }

.card {
    background: var(--card);
    border: 1px solid #e3e3e3;
    border-radius: 0.6rem;
    padding: 1.5rem;
}

.card h1 { margin-top: 0; }
.card h2 { margin-top: 1.6rem; }

.conn-summary {
    margin: 0 0 1rem 0;
    color: #555;
    font-size: 0.95rem;
}

.row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.8rem;
}

.info {
    display: grid;
    grid-template-columns: max-content 1fr;
    column-gap: 1rem;
    row-gap: 0.4rem;
    margin: 0 0 0.5rem 0;
    padding: 0.6rem 0;
    border-top: 1px solid #eee;
}
.info:empty { display: none; }
.info dt { font-weight: 600; color: #555; }
.info dd { margin: 0; }

.cells {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(12rem, 1fr));
    gap: 0.8rem;
    margin-top: 0.6rem;
}

.cell-btn {
    display: flex;
    flex-direction: column;
    gap: 0.3rem;
    padding: 0.8rem 1rem;
    background: var(--card);
    border: 1px solid var(--accent);
    border-radius: 0.5rem;
    color: var(--accent);
    text-decoration: none;
    transition: background 0.15s, color 0.15s;
}

.cell-btn:hover {
    background: var(--accent);
    color: #fff;
}

.cell-btn .cell-label { font-weight: 700; font-size: 1.05rem; }
.cell-btn .cell-meta { font-size: 0.85rem; opacity: 0.85; }
.cell-btn .cell-chans {
    display: flex;
    flex-wrap: wrap;
    gap: 0.3rem;
    font-size: 0.8rem;
}
.cell-btn .ch {
    padding: 0.05rem 0.4rem;
    background: rgba(42, 95, 180, 0.08);
    border-radius: 0.25rem;
    white-space: nowrap;
}
.cell-btn:hover .ch {
    background: rgba(255, 255, 255, 0.18);
}

.cell-btn.cell-broken {
    border-color: #b88;
    color: #a44;
    cursor: not-allowed;
}

.cell-empty { font-style: italic; opacity: 0.75; }

.nav, .page-actions {
    display: flex;
    gap: 0.5rem;
    margin-top: 1rem;
    flex-wrap: wrap;
}

.navbtn {
    display: inline-block;
    padding: 0.3rem 0.7rem;
    border: 1px solid var(--accent);
    color: var(--accent);
    border-radius: 0.35rem;
    text-decoration: none;
    font-size: 0.9rem;
}
.navbtn:hover { background: var(--accent); color: #fff; }

.loader-overlay {
    position: fixed;
    inset: 0;
    background: rgba(255, 255, 255, 0.85);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    backdrop-filter: blur(1px);
}
.loader-overlay.visible { display: flex; }

.spinner {
    width: 64px;
    height: 64px;
    border: 6px solid #e6e6e6;
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin 0.9s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}