:root {
    --bg: #f5f6f8;
    --card: #ffffff;
    --ink: #1c2430;
    --muted: #6b7683;
    --line: #e3e7ec;
    --brand: #2563eb;
    --brand-ink: #ffffff;
    --danger: #dc2626;
    --warn-bg: #fff7e6;
    --radius: 10px;
    --shadow: 0 1px 2px rgba(16, 24, 40, .06), 0 1px 3px rgba(16, 24, 40, .1);
}

* { box-sizing: border-box; }

body {
    margin: 0;
    font: 15px/1.55 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Arial, sans-serif;
    color: var(--ink);
    background: var(--bg);
}

a { color: var(--brand); text-decoration: none; }
a:hover { text-decoration: underline; }
code { background: #eef1f5; padding: .1em .35em; border-radius: 4px; font-size: .9em; }

/* Topbar */
.topbar {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    padding: .85rem 1.5rem;
    background: var(--card);
    border-bottom: 1px solid var(--line);
}
.topbar .brand { font-weight: 700; color: var(--ink); font-size: 1.05rem; }
.topbar nav { display: flex; gap: 1.25rem; }
.topbar nav a { color: var(--muted); font-weight: 500; }
.topbar nav a:hover { color: var(--ink); text-decoration: none; }
.topbar .logout { margin-left: auto; }

.container { max-width: 1100px; margin: 2rem auto; padding: 0 1.5rem; }

.page-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 1.25rem; gap: 1rem; }
.page-head h1 { margin: 0; font-size: 1.5rem; }
.head-actions { display: flex; gap: .5rem; }

h2 { font-size: 1.05rem; margin: 0 0 1rem; }

/* Cards */
.card {
    background: var(--card);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 1.25rem 1.35rem;
    box-shadow: var(--shadow);
    margin-bottom: 1.25rem;
}

.cols { display: grid; grid-template-columns: 1.3fr 1fr; gap: 1.25rem; align-items: start; }
@media (max-width: 820px) { .cols { grid-template-columns: 1fr; } }

/* Buttons */
.btn {
    display: inline-block;
    padding: .5rem .9rem;
    border-radius: 8px;
    border: 1px solid var(--line);
    background: var(--card);
    color: var(--ink);
    font: inherit;
    font-weight: 500;
    cursor: pointer;
    text-decoration: none;
}
.btn:hover { border-color: #c9d0d8; text-decoration: none; }
.btn--primary { background: var(--brand); color: var(--brand-ink); border-color: var(--brand); }
.btn--primary:hover { background: #1d4ed8; }
.link { background: none; border: none; color: var(--brand); cursor: pointer; font: inherit; padding: 0; }
.link--danger { color: var(--danger); }

/* Forms */
.fields { display: grid; gap: .9rem; }
.field { display: grid; gap: .3rem; }
.field span { font-size: .82rem; color: var(--muted); font-weight: 500; }
.field input {
    padding: .55rem .65rem;
    border: 1px solid var(--line);
    border-radius: 8px;
    font: inherit;
    background: #fff;
}
.field input:focus { outline: 2px solid rgba(37, 99, 235, .25); border-color: var(--brand); }

.form-actions { margin-top: 1rem; display: flex; gap: .5rem; }
.form-actions.sticky {
    position: sticky; bottom: 0;
    background: linear-gradient(transparent, var(--bg) 40%);
    padding: 1rem 0; margin-top: 0;
}

.filedrop {
    display: block; text-align: center; padding: 2rem;
    border: 2px dashed var(--line); border-radius: var(--radius);
    cursor: pointer; margin: 1rem 0;
}
.filedrop:hover { border-color: var(--brand); }
.filedrop input { display: block; margin: 0 auto .75rem; }

/* Themes picker */
.themes { display: grid; gap: .6rem; }
.theme-card {
    display: grid; gap: .2rem;
    border: 1px solid var(--line); border-radius: 8px;
    padding: .7rem .8rem; cursor: pointer;
}
.theme-card.is-selected, .theme-card:hover { border-color: var(--brand); background: #f5f8ff; }
.theme-card input { display: none; }
.theme-card .muted { font-size: .85rem; }

/* Tables */
.grid { width: 100%; border-collapse: collapse; background: var(--card); border-radius: var(--radius); overflow: hidden; }
.grid th, .grid td { text-align: left; padding: .6rem .75rem; border-bottom: 1px solid var(--line); }
.grid thead th { background: #fafbfc; font-size: .82rem; color: var(--muted); text-transform: uppercase; letter-spacing: .02em; }
.grid tbody tr:hover { background: #fafbfc; }
.grid--data td { font-size: .85rem; white-space: nowrap; }
.grid--data tfoot td { font-weight: 700; background: #fafbfc; }
.preview-scroll { overflow-x: auto; }
.row-actions { display: flex; gap: .75rem; align-items: center; white-space: nowrap; }
.row-actions form { display: inline; }

.tag { display: inline-block; padding: .05rem .4rem; background: #eef1f5; border-radius: 4px; font-size: .75rem; text-transform: uppercase; color: var(--muted); }
.muted { color: var(--muted); }
.agreement { white-space: pre-wrap; background: #fafbfc; border: 1px solid var(--line); border-radius: 8px; padding: .8rem; font-size: .85rem; }

/* Flash */
.flash { padding: .7rem 1rem; border-radius: 8px; margin-bottom: 1rem; font-size: .92rem; }
.flash--success { background: #e7f7ed; color: #14663a; }
.flash--error { background: #fdecec; color: #a11; }
.flash--warning { background: #fff5e0; color: #8a5a00; }

.empty { text-align: center; padding: 3rem; color: var(--muted); }

/* Login */
.login-body { display: grid; place-items: center; min-height: 100vh; }
.login-card { width: 340px; }
.login-card h1 { font-size: 1.25rem; margin: 0 0 1rem; text-align: center; }
.login-card .field { margin-bottom: 1rem; }
.login-card .btn { width: 100%; }