:root {
    --color-bg: #f4f5f7;
    --color-surface: #ffffff;
    --color-border: #dde1e6;
    --color-text: #1f2430;
    --color-muted: #6b7280;
    --color-primary: #2563eb;
    --color-primary-hover: #1d4ed8;
    --color-danger: #dc2626;
    --color-success: #16a34a;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Arial, sans-serif;
}

* { box-sizing: border-box; }

html, body {
    height: 100%;
}

body {
    margin: 0;
    background: var(--color-bg);
    color: var(--color-text);
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

/* --- Login --- */
.login-page {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 100vh;
}
.login-box {
    background: var(--color-surface);
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 2px 12px rgba(0,0,0,.08);
    width: 320px;
    display: flex;
    flex-direction: column;
    gap: .9rem;
}
.login-box h1 { font-size: 1.2rem; margin: 0 0 .5rem; }
.login-box label { display: flex; flex-direction: column; gap: .3rem; font-size: .85rem; color: var(--color-muted); }
.login-box input { padding: .55rem .6rem; border: 1px solid var(--color-border); border-radius: 6px; font-size: 1rem; }
.login-box button { margin-top: .3rem; padding: .6rem; border: none; border-radius: 6px; background: var(--color-primary); color: #fff; font-size: 1rem; cursor: pointer; }
.login-box button:hover { background: var(--color-primary-hover); }
.login-box .error { color: var(--color-danger); font-size: .85rem; margin: 0; }

/* --- Layout --- */
.topbar {
    flex: 0 0 auto;
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
    padding: .8rem 1.5rem;
    display: flex;
    align-items: center;
    gap: 1.5rem;
}
.topbar h1 { font-size: 1.1rem; margin: 0; }
.topbar nav { display: flex; align-items: center; gap: 1rem; }
.topbar nav a { color: var(--color-muted); text-decoration: none; font-size: .9rem; }
.topbar nav a.active, .topbar nav a:hover { color: var(--color-primary); }
.topbar .user { margin-left: auto; color: var(--color-muted); font-size: .85rem; }

main {
    padding: 1.5rem;
    flex: 1 1 auto;
    display: flex;
    flex-direction: column;
    min-height: 0;
}

section { background: var(--color-surface); border: 1px solid var(--color-border); border-radius: 8px; padding: 1.2rem; margin-bottom: 1.5rem; }
.hint { color: var(--color-muted); font-size: .85rem; margin-top: -.4rem; }

/* --- Toolbar --- */
.toolbar {
    flex: 0 0 auto;
    display: flex;
    align-items: center;
    gap: .8rem;
    margin-bottom: 1rem;
    flex-wrap: wrap;
}
.hidden-hint { margin-left: auto; }
.hidden-hint a { color: var(--color-primary); }
.toolbar input, .toolbar select {
    padding: .5rem .6rem;
    border: 1px solid var(--color-border);
    border-radius: 6px;
    font-size: .9rem;
}
button {
    padding: .5rem .9rem;
    border: 1px solid var(--color-border);
    border-radius: 6px;
    background: #fff;
    cursor: pointer;
    font-size: .9rem;
}
button:hover { background: #f0f1f3; }
button.primary { background: var(--color-primary); color: #fff; border-color: var(--color-primary); }
button.primary:hover { background: var(--color-primary-hover); }
.status { font-size: .85rem; color: var(--color-muted); }
.status.success { color: var(--color-success); }
.status.error { color: var(--color-danger); }

/* --- Matrix table --- */
.table-wrapper { overflow: auto; flex: 1 1 auto; min-height: 200px; border: 1px solid var(--color-border); border-radius: 8px; background: var(--color-surface); }
table { border-collapse: collapse; width: 100%; font-size: .85rem; }
thead th { position: sticky; top: 0; background: #fafbfc; z-index: 2; border-bottom: 1px solid var(--color-border); }
th, td { border: 1px solid var(--color-border); padding: .5rem; text-align: left; white-space: nowrap; }
.col-name { position: sticky; left: 0; background: var(--color-surface); z-index: 1; min-width: 200px; }
thead .col-name { z-index: 3; }
.col-alias { min-width: 90px; text-align: center; }
.alias-head { display: flex; flex-direction: column; align-items: center; gap: .15rem; }
.alias-address { font-weight: 600; writing-mode: vertical-rl; transform: rotate(180deg); max-height: 140px; }
.alias-group { font-size: .7rem; color: var(--color-muted); }
.alias-count { font-size: .7rem; color: var(--color-primary); }
.col-check { text-align: center; }
.person-name { display: block; font-weight: 500; }
.person-email { display: block; font-size: .75rem; color: var(--color-muted); }
.person-group { display: inline-block; margin-top: .2rem; font-size: .7rem; background: #eef2ff; color: var(--color-primary); padding: .05rem .4rem; border-radius: 4px; }
.person-row.hidden { display: none; }

/* --- Forms --- */
.inline-form { display: flex; align-items: center; gap: .6rem; margin-bottom: 1rem; flex-wrap: wrap; }
.inline-form input, .inline-form select { padding: .5rem .6rem; border: 1px solid var(--color-border); border-radius: 6px; font-size: .9rem; }

/* --- Import/Export --- */
.io-actions { margin-bottom: 1rem; }
.button-link { text-decoration: none; }
.hint.success { color: var(--color-success); }
.hint.error { color: var(--color-danger); }
code { background: #eef1f5; padding: .1rem .35rem; border-radius: 4px; font-size: .85em; }