:root {
    --color-primary: #1b5e4b;
    --color-primary-dark: #134739;
    --color-bg: #f4f6f5;
    --color-card: #ffffff;
    --color-text: #22302b;
    --color-muted: #637069;
    --color-error: #b3261e;
    --color-border: #d9e0dc;
    --radius: 10px;
}

* { box-sizing: border-box; }

body {
    margin: 0;
    font-family: "Segoe UI", system-ui, -apple-system, sans-serif;
    background: var(--color-bg);
    color: var(--color-text);
    line-height: 1.5;
}

.topbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 14px 20px;
    background: var(--color-primary);
    color: #fff;
    flex-wrap: wrap;
    gap: 8px;
}

.topbar .brand { font-weight: 600; letter-spacing: .02em; }
.topbar .langs a, .topbar .langs strong { color: #fff; margin-left: 4px; }
.topbar .langs a { text-decoration: underline; opacity: .9; }

.container {
    max-width: 880px;
    margin: 24px auto;
    padding: 0 16px 48px;
    display: grid;
    gap: 20px;
}

.card {
    background: var(--color-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 24px;
    box-shadow: 0 1px 3px rgba(0, 0, 0, .06);
}

.card h1 { margin-top: 0; font-size: 1.4rem; }
.muted { color: var(--color-muted); }
.small { font-size: .85rem; }

.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 14px;
}

label { display: flex; flex-direction: column; gap: 4px; font-weight: 500; font-size: .95rem; }

input, select {
    padding: 10px 12px;
    border: 1px solid var(--color-border);
    border-radius: 8px;
    font: inherit;
    width: 100%;
    background: #fff;
}

input:focus, select:focus {
    outline: 2px solid var(--color-primary);
    outline-offset: 1px;
}

.actions { display: flex; gap: 12px; margin-top: 20px; flex-wrap: wrap; }

.btn {
    display: inline-block;
    padding: 12px 22px;
    border-radius: 8px;
    border: 1px solid transparent;
    font: inherit;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    text-align: center;
}

.btn.primary { background: var(--color-primary); color: #fff; }
.btn.primary:hover { background: var(--color-primary-dark); }
.btn.secondary { background: #fff; color: var(--color-primary); border-color: var(--color-primary); }
.btn.link { background: none; color: var(--color-primary); }

.alert.error {
    background: #fdecea;
    color: var(--color-error);
    border: 1px solid #f5c6c2;
    padding: 10px 14px;
    border-radius: 8px;
}

.alert.warning {
    background: #fff8e1;
    color: #7a5b00;
    border: 1px solid #f0dfa0;
    padding: 10px 14px;
    border-radius: 8px;
}

.field-error { color: var(--color-error); font-size: .82rem; font-weight: 400; }

.guest-block {
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 18px;
    margin: 18px 0;
}

.guest-block legend { font-weight: 600; padding: 0 8px; }

.address { margin-top: 14px; }
.address summary { cursor: pointer; color: var(--color-primary); font-weight: 600; }

.draft-notice {
    background: #e8f4ef;
    border: 1px solid #bfe0d2;
    color: var(--color-primary-dark);
    padding: 8px 12px;
    border-radius: 8px;
    font-size: .88rem;
}

.summary, .totals {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 10px;
    margin: 0;
}

.summary dt, .totals dt { font-size: .8rem; color: var(--color-muted); }
.summary dd, .totals dd { margin: 0; font-weight: 600; }
.totals { margin-top: 18px; }
.totals .balance dd { font-size: 1.2rem; color: var(--color-primary); }

.table-wrap { overflow-x: auto; }

table.statement { width: 100%; border-collapse: collapse; }
table.statement th, table.statement td {
    padding: 8px 10px;
    border-bottom: 1px solid var(--color-border);
    text-align: left;
    white-space: nowrap;
}
table.statement th { font-size: .8rem; color: var(--color-muted); }
table.statement .num { text-align: right; }

.hero { text-align: center; }
.hero .actions { justify-content: center; }

@media (max-width: 560px) {
    .card { padding: 16px; }
    .container { margin: 12px auto; }
}