:root {
    --bg: #f5f6f8;
    --panel-bg: #ffffff;
    --border: #d9dde3;
    --primary: #2f6feb;
    --primary-hover: #1f57c4;
    --danger: #c0392b;
    --danger-hover: #922b1f;
    --muted: #6b7280;
    --text: #1f2937;
}

* { box-sizing: border-box; }

/* The [hidden] HTML attribute must always win over author `display` rules.
   Without this, elements like <main> or .topbar (which set display: flex)
   would remain visible even when marked hidden. */
[hidden] { display: none !important; }

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

.topbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 2rem;
    background: var(--panel-bg);
    border-bottom: 1px solid var(--border);
}

.topbar h1 { font-size: 1.15rem; margin: 0; }

.auth { display: flex; align-items: center; gap: 0.75rem; }
.auth #user-email { color: var(--muted); font-size: 0.9rem; }

main {
    max-width: 960px;
    margin: 2rem auto;
    padding: 0 1rem;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.panel {
    background: var(--panel-bg);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 1.25rem 1.5rem;
    box-shadow: 0 1px 2px rgba(0,0,0,.04);
}

.panel h2 { margin-top: 0; font-size: 1.05rem; }

form {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.75rem 1rem;
}

form label {
    display: flex;
    flex-direction: column;
    font-size: 0.85rem;
    color: var(--muted);
}

form label input,
form label select {
    margin-top: 0.25rem;
    padding: 0.5rem 0.6rem;
    font-size: 0.95rem;
    color: var(--text);
    border: 1px solid var(--border);
    border-radius: 6px;
    background: #fff;
}

form label:nth-of-type(3) { grid-column: span 2; }

.actions {
    grid-column: span 2;
    display: flex;
    gap: 0.5rem;
}

button {
    padding: 0.5rem 0.9rem;
    font-size: 0.9rem;
    border-radius: 6px;
    border: 1px solid var(--primary);
    background: var(--primary);
    color: #fff;
    cursor: pointer;
}
button:hover { background: var(--primary-hover); border-color: var(--primary-hover); }
button.secondary {
    background: transparent;
    color: var(--primary);
}
button.danger {
    background: var(--danger);
    border-color: var(--danger);
}
button.danger:hover { background: var(--danger-hover); border-color: var(--danger-hover); }

.filter-row {
    display: flex;
    align-items: end;
    gap: 1rem;
    margin-bottom: 0.75rem;
}
.filter-row label {
    display: flex;
    flex-direction: column;
    font-size: 0.85rem;
    color: var(--muted);
}
.filter-row select {
    margin-top: 0.25rem;
    padding: 0.4rem 0.6rem;
    border: 1px solid var(--border);
    border-radius: 6px;
}

table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.9rem;
}
th, td {
    text-align: left;
    padding: 0.55rem 0.6rem;
    border-bottom: 1px solid var(--border);
    vertical-align: top;
}
th { color: var(--muted); font-weight: 600; font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.03em; }
td a { color: var(--primary); text-decoration: none; word-break: break-all; }
td a:hover { text-decoration: underline; }

td.row-actions { white-space: nowrap; }
td.row-actions button { margin-left: 0.35rem; padding: 0.3rem 0.55rem; font-size: 0.8rem; }

.message { min-height: 1.2rem; margin: 0.75rem 0 0; font-size: 0.85rem; }
.message.ok { color: #14804a; }
.message.err { color: var(--danger); }

.loading {
    position: fixed;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255,255,255,0.8);
    color: var(--muted);
    font-size: 0.95rem;
}

/* ---- Login prompt (shown when not authenticated) --------------------- */
.login-view {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1.5rem;
}

.login-panel {
    width: 100%;
    max-width: 420px;
    text-align: center;
    padding: 2.25rem 1.75rem;
}

.login-panel h2 {
    margin: 0 0 0.5rem;
    font-size: 1.4rem;
}

.login-panel p {
    color: var(--muted);
    margin: 0 0 1.5rem;
    font-size: 0.95rem;
}

button.large {
    padding: 0.65rem 1.75rem;
    font-size: 1rem;
}