:root {
    --bg: #fbf7f2;
    --card: #ffffff;
    --ink: #2b2420;
    --muted: #8a7d72;
    --accent: #e0622a;
    --accent-dark: #c04f1e;
    --green: #2f9e5a;
    --red: #d64545;
    --border: #ece3da;
    --radius: 16px;
    font-size: 16px;
}

* { box-sizing: border-box; }

body {
    margin: 0;
    background: var(--bg);
    color: var(--ink);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    padding-bottom: 84px;
}

.wrap {
    max-width: 520px;
    margin: 0 auto;
    padding: 16px;
}

header.top {
    position: sticky;
    top: 0;
    background: var(--bg);
    z-index: 10;
    padding: 14px 16px 8px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-bottom: 1px solid var(--border);
}

header.top h1 {
    font-size: 20px;
    margin: 0;
    display: flex;
    align-items: center;
    gap: 8px;
}

header.top .user-tag {
    font-size: 13px;
    color: var(--muted);
    text-align: right;
}

header.top a { color: var(--accent-dark); text-decoration: none; font-size: 13px; }

.card {
    background: var(--card);
    border-radius: var(--radius);
    padding: 18px;
    margin-bottom: 16px;
    box-shadow: 0 1px 3px rgba(43, 36, 32, 0.06);
    border: 1px solid var(--border);
}

h2.section-title {
    font-size: 15px;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    color: var(--muted);
    margin: 0 0 12px;
}

label {
    display: block;
    font-size: 13px;
    color: var(--muted);
    margin: 14px 0 6px;
    font-weight: 600;
}
label:first-of-type { margin-top: 0; }

input[type=text], input[type=number], input[type=date], input[type=password], select, textarea {
    width: 100%;
    padding: 12px 14px;
    border-radius: 12px;
    border: 1.5px solid var(--border);
    background: #fffdfb;
    font-size: 16px;
    color: var(--ink);
    font-family: inherit;
}
input:focus, select:focus, textarea:focus { outline: none; border-color: var(--accent); }

.type-toggle {
    display: flex;
    gap: 8px;
}
.type-toggle label {
    flex: 1;
    text-align: center;
    padding: 12px;
    border-radius: 12px;
    border: 1.5px solid var(--border);
    cursor: pointer;
    font-weight: 600;
    color: var(--ink);
    margin: 0;
}
.type-toggle input { display: none; }
.type-toggle input:checked + span,
.type-toggle label.active {
    color: #fff;
}
.type-toggle label.active { background: var(--accent); border-color: var(--accent); }

.chip-row {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 4px;
}
.chip {
    padding: 8px 14px;
    border-radius: 999px;
    border: 1.5px solid var(--border);
    background: #fff;
    font-size: 14px;
    cursor: pointer;
    user-select: none;
}
.chip.selected { background: var(--accent); border-color: var(--accent); color: #fff; }

.invitee-list { display: flex; flex-direction: column; gap: 8px; }
.invitee-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 12px;
    border: 1.5px solid var(--border);
    border-radius: 12px;
    cursor: pointer;
}
.invitee-item input { width: 18px; height: 18px; }

button, .btn {
    display: inline-block;
    background: var(--accent);
    color: #fff;
    border: none;
    padding: 13px 20px;
    border-radius: 12px;
    font-size: 16px;
    font-weight: 700;
    cursor: pointer;
    text-align: center;
    text-decoration: none;
    width: 100%;
    margin-top: 16px;
}
button:active, .btn:active { background: var(--accent-dark); }
.btn.secondary { background: #fff; color: var(--ink); border: 1.5px solid var(--border); }
.btn.small { width: auto; padding: 8px 14px; font-size: 14px; margin-top: 0; }

.entry {
    padding: 12px 0;
    border-bottom: 1px solid var(--border);
}
.entry:last-child { border-bottom: none; }
.entry-top { display: flex; justify-content: space-between; align-items: baseline; gap: 8px; }
.entry-title { font-weight: 700; }
.entry-amount { font-weight: 700; white-space: nowrap; }
.entry-meta { font-size: 13px; color: var(--muted); margin-top: 3px; }
.badge {
    display: inline-block;
    font-size: 11px;
    padding: 2px 8px;
    border-radius: 999px;
    background: #f2e6dc;
    color: var(--accent-dark);
    margin-right: 6px;
    font-weight: 700;
}
.badge.invite { background: #e4f3e9; color: var(--green); }

.balance-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 0;
    border-bottom: 1px solid var(--border);
}
.balance-row:last-child { border-bottom: none; }
.balance-amount.positive { color: var(--green); font-weight: 700; }
.balance-amount.negative { color: var(--red); font-weight: 700; }

.summary-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.summary-grid .box { background: #fff7f0; border-radius: 12px; padding: 12px; }
.summary-grid .box .num { font-size: 19px; font-weight: 800; }
.summary-grid .box .lbl { font-size: 12px; color: var(--muted); }

nav.bottom {
    position: fixed;
    bottom: 0; left: 0; right: 0;
    background: #fff;
    border-top: 1px solid var(--border);
    display: flex;
    padding: 6px 0 max(6px, env(safe-area-inset-bottom));
    z-index: 20;
}
nav.bottom a {
    flex: 1;
    text-align: center;
    text-decoration: none;
    color: var(--muted);
    font-size: 12px;
    padding: 8px 0 2px;
    font-weight: 600;
}
nav.bottom a.active { color: var(--accent); }
nav.bottom a .ic { display: block; font-size: 20px; margin-bottom: 2px; }

.error { background: #fdecec; color: var(--red); padding: 10px 14px; border-radius: 10px; margin-bottom: 14px; font-size: 14px; }
.success { background: #e4f3e9; color: var(--green); padding: 10px 14px; border-radius: 10px; margin-bottom: 14px; font-size: 14px; }

.login-page { display: flex; min-height: 100vh; align-items: center; }
.login-page .card { width: 100%; }
.login-page .logo { text-align: center; font-size: 40px; margin-bottom: 4px; }
.login-page h1 { text-align: center; margin: 0 0 22px; font-size: 22px; }

table.admin-table { width: 100%; border-collapse: collapse; font-size: 14px; }
table.admin-table th, table.admin-table td { text-align: left; padding: 8px 6px; border-bottom: 1px solid var(--border); }
.muted { color: var(--muted); font-size: 13px; }