:root {
    --accent:       #3b82f6;
    --accent-hover: #2563eb;
    --accent-light: #eff6ff;
    --bg:           #f1f5f9;
    --bg-alt:       #f8fafc;
    --card-bg:      #ffffff;
    --border:       #e2e8f0;
    --border-dark:  #cbd5e1;
    --text:         #1e293b;
    --muted:        #64748b;
    --success:      #10b981;
    --success-bg:   #ecfdf5;
    --warning:      #f59e0b;
    --warning-bg:   #fffbeb;
    --danger:       #ef4444;
    --danger-bg:    #fef2f2;
    --current-bg:   var(--success-bg);
    --radius:       12px;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    font-size: 14px;
    color: var(--text);
    background: var(--bg);
    line-height: 1.5;
}

.topbar {
    background: var(--card-bg);
    border-bottom: 1px solid var(--border);
    padding: 0 28px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: sticky;
    top: 0;
    z-index: 50;
}

.topbar-brand { display: flex; align-items: center; gap: 10px; }
.topbar-brand img { width: 22px; height: 22px; object-fit: contain; flex-shrink: 0; }
.topbar h1 { font-size: 18px; font-weight: 700; color: var(--text); }

.who { display: flex; align-items: center; gap: 10px; }

.date-badge {
    font-size: 13px;
    color: var(--muted);
    background: var(--bg);
    padding: 5px 12px;
    border-radius: 20px;
    border: 1px solid var(--border);
    white-space: nowrap;
}

.user-menu { position: relative; }

.user-badge {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 13px;
    font-weight: 600;
    color: var(--text);
    background: var(--bg);
    padding: 5px 12px;
    border-radius: 20px;
    border: 1px solid var(--border);
    white-space: nowrap;
    cursor: pointer;
    font-family: inherit;
    appearance: none;
    -webkit-appearance: none;
    outline: none;
    transition: border-color 0.15s, background 0.15s;
}
.user-badge:hover { border-color: var(--accent); background: var(--accent-light); }
.user-badge svg { opacity: 0.6; transition: transform 0.15s; }
.user-menu.open .user-badge svg.chevron { transform: rotate(180deg); }

.user-dropdown {
    display: none;
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    min-width: 190px;
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 10px;
    box-shadow: 0 8px 24px rgba(0,0,0,0.15);
    z-index: 200;
    overflow: hidden;
}
.user-menu.open .user-dropdown { display: block; }

.user-dropdown-item {
    display: flex;
    align-items: center;
    gap: 9px;
    width: 100%;
    padding: 10px 14px;
    font-size: 13.5px;
    font-weight: 500;
    color: var(--text);
    text-decoration: none;
    background: none;
    border: none;
    cursor: pointer;
    text-align: left;
    font-family: inherit;
}
.user-dropdown-item:hover { background: var(--bg); }
.user-dropdown-item.active { color: var(--accent); font-weight: 700; }
.user-dropdown-item-danger { color: var(--danger); }
.user-dropdown-item-danger:hover { background: var(--danger-bg); }
.user-dropdown-divider { height: 1px; background: var(--border); margin: 4px 0; }

main {
    max-width: 1300px;
    margin: 28px auto;
    padding: 0 20px;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.card {
    background: var(--card-bg);
    border-radius: var(--radius);
    border: 1px solid var(--border);
    padding: 24px;
}

.card h2 { margin-top: 0; font-size: 15px; font-weight: 700; color: var(--text); }

.ledger-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    margin-bottom: 4px;
}

.ledger-header h2 { margin: 0; }
.ledger-actions { display: flex; gap: 8px; flex-shrink: 0; }

.meta-line { color: var(--muted); font-size: 13px; margin: 12px 0 0; }

.stat-row {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 16px;
}

.stat {
    display: flex;
    flex-direction: column;
    gap: 4px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 16px;
}

.stat:nth-child(1) { background: var(--accent-light); }
.stat:nth-child(2) { background: var(--success-bg); }
.stat:nth-child(3) { background: #fff7ed; }
.stat:nth-child(4) { background: #f0fdfa; }
.stat:nth-child(5) { background: var(--warning-bg); }

.stat-label {
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--muted);
    font-weight: 700;
}

.stat-value { font-size: 24px; font-weight: 800; line-height: 1.2; }

.stat:nth-child(1) .stat-value { color: var(--accent-hover); }
.stat:nth-child(2) .stat-value { color: #065f46; }
.stat:nth-child(3) .stat-value { color: #c2410c; }
.stat:nth-child(4) .stat-value { color: #0d9488; }
.stat:nth-child(5) .stat-value { color: #92400e; }

@media (max-width: 900px) {
    .stat-row { grid-template-columns: repeat(2, 1fr); }
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 7px 16px;
    border-radius: 20px;
    text-decoration: none;
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    border: 1px solid transparent;
    transition: background 0.15s, color 0.15s, border-color 0.15s;
}

.btn-primary { background: var(--accent); color: #fff; border-radius: 8px; }
.btn-primary:hover { background: var(--accent-hover); }

.btn-ghost {
    background: var(--bg);
    color: var(--muted);
    border: 1px solid var(--border);
}
.btn-ghost:hover { color: var(--text); border-color: var(--border-dark); }

.btn-danger { color: var(--danger); }
.btn-danger:hover { color: #fff; background: var(--danger); border-color: var(--danger); }

.btn-ghost.active { background: var(--accent); color: #fff; border-color: var(--accent); }

select {
    font-size: 15px;
    padding: 9px 12px;
    border: 1px solid var(--border);
    border-radius: 8px;
    color: var(--text);
    font-family: inherit;
    background: var(--card-bg);
}

.inline-form {
    display: flex;
    align-items: end;
    gap: 12px;
    flex-wrap: wrap;
}

.inline-form label {
    display: flex;
    flex-direction: column;
    gap: 6px;
    font-size: 12px;
    font-weight: 600;
    color: var(--muted);
    text-transform: uppercase;
    letter-spacing: 0.03em;
}

.inline-form select, .inline-form input { min-width: 240px; }

.entry-form {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
    align-items: end;
}

.entry-form label {
    display: flex;
    flex-direction: column;
    gap: 6px;
    font-size: 12px;
    font-weight: 600;
    color: var(--muted);
    text-transform: uppercase;
    letter-spacing: 0.03em;
}

.entry-form input, .inline-form input {
    padding: 9px 12px;
    border: 1px solid var(--border);
    border-radius: 8px;
    font-size: 14px;
    color: var(--text);
    background: var(--card-bg);
    font-family: inherit;
}

.checkbox-label { flex-direction: row !important; align-items: center; gap: 8px !important; }

.log-form { display: flex; flex-direction: column; gap: 16px; }

.form-row { display: flex; gap: 16px; }

.form-row label {
    display: flex;
    flex-direction: column;
    gap: 6px;
    font-size: 12px;
    font-weight: 600;
    color: var(--muted);
    text-transform: uppercase;
    letter-spacing: 0.03em;
    flex: 1;
}

.form-row input {
    padding: 9px 12px;
    border: 1px solid var(--border);
    border-radius: 8px;
    font-size: 14px;
    color: var(--text);
    background: var(--card-bg);
    font-family: inherit;
}

.form-row-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.form-row-3 label { flex: none; }

.log-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 13px;
}

.log-table th, .log-table td {
    text-align: left;
    padding: 10px 12px;
    border-bottom: 1px solid var(--border);
}

.log-table th {
    background: var(--bg-alt);
    color: var(--muted);
    font-weight: 700;
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.log-table tbody tr:hover td { background: var(--bg-alt); }

.log-table input {
    width: 100%;
    padding: 5px 8px;
    border: 1px solid var(--border);
    border-radius: 6px;
    font-size: 13px;
    color: var(--text);
    background: var(--card-bg);
}

.log-table td.center { text-align: center; }

.current-row td { background: var(--current-bg) !important; }
.current-marker {
    display: inline-block;
    margin-left: 6px;
    font-size: 10px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.03em;
    color: #065f46;
    background: #d1fae5;
    padding: 2px 8px;
    border-radius: 20px;
}

.ledger-table tbody tr:nth-child(even):not(.current-row) { background: var(--bg-alt); }

.tag {
    display: inline-block;
    padding: 3px 10px;
    background: var(--accent-light);
    color: var(--accent-hover);
    border-radius: 20px;
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.03em;
}

.hint { color: var(--muted); font-size: 12px; }

.alert { padding: 12px 16px; border-radius: 10px; margin-bottom: 16px; font-size: 13.5px; font-weight: 500; }
.alert-error { background: var(--danger-bg); color: #991b1b; border: 1px solid #fecaca; }
.alert-error ul { margin: 0; padding-left: 18px; }
.alert-success { background: var(--success-bg); color: #065f46; border: 1px solid #a7f3d0; }

.auth-wrap {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    background: var(--bg);
}

.auth-card { width: 340px; text-align: left; }
.auth-card h1 { display: flex; align-items: center; gap: 10px; font-size: 18px; font-weight: 700; margin-top: 0; }
.auth-card h1 img { width: 24px; height: 24px; object-fit: contain; flex-shrink: 0; }
.auth-card form { display: flex; flex-direction: column; gap: 14px; margin-top: 18px; }
.auth-card label {
    display: flex;
    flex-direction: column;
    gap: 6px;
    font-size: 12px;
    font-weight: 600;
    color: var(--muted);
    text-transform: uppercase;
    letter-spacing: 0.03em;
}
.auth-card input {
    padding: 9px 12px;
    border: 1px solid var(--border);
    border-radius: 8px;
    font-size: 14px;
    color: var(--text);
    background: var(--card-bg);
}

@media (max-width: 700px) {
    .entry-form { grid-template-columns: 1fr; }
    .form-row, .form-row-3 { grid-template-columns: 1fr; flex-direction: column; }
    .topbar { flex-direction: column; height: auto; padding: 12px 16px; align-items: flex-start; gap: 8px; }
    .who { flex-wrap: wrap; }
}

/* ── Dark Mode ───────────────────────────────────────────────── */
html.dark-mode {
    color-scheme: dark;
    --bg:           #0f172a;
    --bg-alt:       #162032;
    --card-bg:      #1e293b;
    --border:       #334155;
    --border-dark:  #475569;
    --text:         #f1f5f9;
    --muted:        #94a3b8;
    --accent-light: #172554;
    --success-bg:   #052e16;
    --warning-bg:   #431407;
    --danger-bg:    #450a0a;
}

html.dark-mode .stat:nth-child(3) { background: #3a1a07; }
html.dark-mode .stat:nth-child(4) { background: #042f2e; }

html.dark-mode .stat:nth-child(1) .stat-value { color: #93c5fd; }
html.dark-mode .stat:nth-child(2) .stat-value { color: #6ee7b7; }
html.dark-mode .stat:nth-child(3) .stat-value { color: #fdba74; }
html.dark-mode .stat:nth-child(4) .stat-value { color: #5eead4; }
html.dark-mode .stat:nth-child(5) .stat-value { color: #fcd34d; }

html.dark-mode .current-marker { background: #052e16; color: #6ee7b7; }
html.dark-mode .tag { color: #93c5fd; }
html.dark-mode .alert-error { color: #fca5a5; border-color: #7f1d1d; }
html.dark-mode .alert-success { color: #6ee7b7; border-color: #065f46; }
html.dark-mode .user-badge:hover { background: var(--accent-light); }

html.dark-mode ::-webkit-scrollbar { width: 8px; height: 8px; }
html.dark-mode ::-webkit-scrollbar-track { background: var(--bg); }
html.dark-mode ::-webkit-scrollbar-thumb { background: var(--border-dark); border-radius: 8px; }