:root {
    --color-bg: #f4f6f8;
    --color-surface: #ffffff;
    --color-border: #dde2e7;
    --color-text: #1c2530;
    --color-text-muted: #647082;
    --color-primary: #2563eb;
    --color-primary-dark: #1d4ed8;
    --color-primary-bg: #eaf1ff;
    --color-accent: #16a34a;
    --color-danger: #dc2626;
    --color-warning-bg: #fef3c7;
    --radius: 8px;
    --shadow: 0 1px 3px rgba(20, 30, 45, 0.08), 0 1px 2px rgba(20, 30, 45, 0.06);
    font-family: "Segoe UI", system-ui, -apple-system, sans-serif;
}

* { box-sizing: border-box; }

html, body {
    margin: 0;
    height: 100%;
    background: var(--color-bg);
    color: var(--color-text);
}

h1:focus { outline: none; }

a { color: var(--color-primary); }

.app-shell {
    display: flex;
    height: 100vh;
}

.app-sidebar {
    width: 230px;
    flex-shrink: 0;
    height: 100vh;
    overflow-y: auto;
    background: #101828;
    color: #e5e9f0;
    padding: 20px 14px;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.app-sidebar .brand {
    font-weight: 700;
    font-size: 1.05rem;
    color: #fff;
    padding: 0 10px 18px 10px;
    border-bottom: 1px solid rgba(255,255,255,0.12);
    margin-bottom: 12px;
}

.app-sidebar .brand small {
    display: block;
    font-weight: 400;
    color: #9aa5b5;
    font-size: 0.72rem;
    margin-top: 2px;
}

.app-sidebar a {
    color: #cbd3e0;
    text-decoration: none;
    padding: 9px 12px;
    border-radius: 6px;
    font-size: 0.92rem;
}

.app-sidebar a:hover { background: rgba(255,255,255,0.06); color: #fff; }
.app-sidebar a.active { background: var(--color-primary); color: #fff; }

.app-sidebar .sidebar-footer {
    margin-top: auto;
    padding-top: 14px;
    border-top: 1px solid rgba(255,255,255,0.12);
    font-size: 0.82rem;
    color: #9aa5b5;
}

.app-main {
    flex: 1;
    min-width: 0;
    height: 100vh;
    overflow-y: auto;
    padding: 26px 32px 60px 32px;
}

.page-header {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: 16px;
    margin-bottom: 18px;
    flex-wrap: wrap;
}

.page-header h1 { margin: 0; font-size: 1.5rem; }
.page-header p { margin: 4px 0 0 0; color: var(--color-text-muted); }

.card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 18px;
    margin-bottom: 18px;
}

.card h2, .card h3 { margin-top: 0; }

.toolbar {
    display: flex;
    gap: 10px;
    align-items: center;
    flex-wrap: wrap;
    margin-bottom: 16px;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    border: 1px solid var(--color-border);
    background: var(--color-surface);
    color: var(--color-text);
    padding: 8px 14px;
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.88rem;
    text-decoration: none;
}

.btn:hover { border-color: var(--color-primary); color: var(--color-primary); }

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

.btn-danger { color: var(--color-danger); border-color: #f3c6c6; }
.btn-danger:hover { background: #fdecec; border-color: var(--color-danger); }

.btn-sm { padding: 4px 9px; font-size: 0.78rem; }

input[type=text], input[type=email], input[type=password], input[type=date], input[type=number], select, textarea {
    border: 1px solid var(--color-border);
    border-radius: 6px;
    padding: 7px 10px;
    font-size: 0.9rem;
    background: #fff;
    color: var(--color-text);
    font-family: inherit;
}

label { font-size: 0.85rem; color: var(--color-text-muted); display: block; margin-bottom: 4px; }

table { border-collapse: collapse; width: 100%; font-size: 0.88rem; }
th, td { padding: 7px 9px; border-bottom: 1px solid var(--color-border); text-align: left; vertical-align: middle; }
th { color: var(--color-text-muted); font-weight: 600; font-size: 0.78rem; text-transform: uppercase; letter-spacing: .03em; }
th.sortable { cursor: pointer; user-select: none; white-space: nowrap; }
th.sortable:hover { color: var(--color-primary); }
tr.holiday-row td { background: var(--color-warning-bg); }
tr.row-marked td { background: var(--color-warning-bg); }
tr.group-header td { background: #eef1f5; font-weight: 600; font-size: 0.8rem; color: var(--color-text-muted); text-transform: uppercase; letter-spacing: .03em; padding-top: 10px; padding-bottom: 5px; }

.badge {
    display: inline-block;
    padding: 2px 8px;
    border-radius: 999px;
    font-size: 0.74rem;
    background: var(--color-primary-bg);
    color: var(--color-primary-dark);
}

.badge-muted { background: #eef1f5; color: var(--color-text-muted); }
.badge-accent { background: #e8f8ee; color: #15803d; }
.badge-danger { background: #fdecec; color: var(--color-danger); }
.badge-warning { background: #fef3c7; color: #92400e; margin-left: 6px; }

.member-pool {
    display: flex;
    flex-direction: column;
    gap: 6px;
    padding-right: 4px;
}

.member-panel {
    margin-bottom: 0;
    position: sticky;
    top: 0;
    align-self: start;
    min-height: 0;
    max-height: calc(100vh - 252px);
    overflow-y: auto;
}

.member-chip {
    border: 1px solid var(--color-border);
    background: #fff;
    border-radius: 6px;
    padding: 7px 10px;
    cursor: grab;
    font-size: 0.85rem;
    display: flex;
    justify-content: space-between;
    gap: 8px;
    align-items: center;
}

.member-chip:active { cursor: grabbing; }
.member-chip.dragging { opacity: 0.45; }

.team-chip {
    border: 1px solid var(--color-border);
    background: #fff;
    border-radius: 6px;
    padding: 7px 10px;
    cursor: grab;
    font-size: 0.85rem;
    font-weight: 600;
    display: flex;
    justify-content: space-between;
    gap: 8px;
    align-items: center;
}

.team-chip:active { cursor: grabbing; }

.duty-slot {
    min-height: 30px;
    border: 1px dashed var(--color-border);
    border-radius: 6px;
    padding: 5px 8px;
    font-size: 0.82rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 6px;
    background: #fbfcfd;
    min-width: 0;
}

.duty-slot.filled { border-style: solid; background: var(--color-primary-bg); border-color: #b9d2fb; cursor: grab; }
.duty-slot.filled:active { cursor: grabbing; }
.duty-slot.dragover { border-color: var(--color-accent); background: #eafbf1; }
.duty-slot.dragover-invalid { border-color: var(--color-danger); background: #fdecec; }
.duty-slot .clear-btn { border: none; background: none; color: var(--color-text-muted); cursor: pointer; font-size: 0.78rem; }
.duty-slot .clear-btn:hover { color: var(--color-danger); }

.slot-label { font-size: 0.68rem; color: var(--color-text-muted); text-transform: uppercase; letter-spacing: .03em; margin-bottom: 3px; }

.plan-grid {
    display: grid;
    grid-template-columns: 340px 1fr;
    gap: 20px;
    align-items: flex-start;
}

.day-card {
    display: grid;
    grid-template-columns: 190px 1fr;
    gap: 14px;
    align-items: start;
    border: 1px solid var(--color-border);
    border-radius: 8px;
    padding: 10px 12px;
    margin-bottom: 10px;
    background: #fff;
}

.day-card.holiday { background: var(--color-warning-bg); border-color: #f2d78e; }
.day-card.team-dragover { outline: 2px solid var(--color-primary); outline-offset: 2px; }
.day-card.row-invalid { background: #fdecec; outline: 2px solid var(--color-danger); outline-offset: 2px; }
.day-card.row-invalid.holiday { background: #fbe3d8; }

.day-card .day-label {
    font-weight: 600;
    font-size: 0.92rem;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 5px;
}

.day-card .day-label .holiday-name {
    font-weight: 400;
    font-size: 0.78rem;
    color: var(--color-text-muted);
}

.day-card .slots {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(130px, 1fr));
    gap: 8px;
}

.login-shell {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #101828, #1e3a8a);
}

.login-box {
    background: #fff;
    border-radius: 12px;
    padding: 34px 32px;
    width: 360px;
    box-shadow: 0 20px 60px rgba(0,0,0,0.35);
}

.login-box h1 { font-size: 1.3rem; margin: 0 0 4px 0; }
.login-box p.subtitle { color: var(--color-text-muted); margin: 0 0 20px 0; font-size: 0.86rem; }
.login-box form { display: flex; flex-direction: column; gap: 12px; }
.login-box .field { display: flex; flex-direction: column; }
.login-box .switch-link { text-align: center; margin-top: 16px; font-size: 0.85rem; }
.login-box .error { background: #fdecec; color: var(--color-danger); padding: 8px 10px; border-radius: 6px; font-size: 0.82rem; }
.login-box .hint { background: var(--color-primary-bg); color: var(--color-primary-dark); padding: 8px 10px; border-radius: 6px; font-size: 0.78rem; }

.empty-state { color: var(--color-text-muted); font-size: 0.88rem; padding: 24px; text-align: center; }

.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(20, 30, 45, 0.45);
    display: flex;
    align-items: flex-start;
    justify-content: center;
    padding: 5vh 16px;
    overflow-y: auto;
    z-index: 100;
}
.modal-overlay .card { width: 100%; max-width: 640px; margin-bottom: 0; }

.month-tabs { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 16px; }
.month-tabs button { border: 1px solid var(--color-border); background: #fff; padding: 6px 12px; border-radius: 6px; cursor: pointer; font-size: 0.84rem; }
.month-tabs button.active { background: var(--color-primary); color: #fff; border-color: var(--color-primary); }

.blazor-error-boundary {
    background: url(data:image/svg+xml;base64,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) no-repeat 1rem/1.8rem, #b32121;
    padding: 1rem 1rem 1rem 3.7rem;
    color: white;
}

.blazor-error-boundary::after { content: "An error has occurred."; }

#blazor-error-ui {
    background: #b32121;
    color: #fff;
    display: none;
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 0.9rem 1.2rem;
    z-index: 1000;
}
#blazor-error-ui .reload { color: #fff; text-decoration: underline; margin-left: 8px; }
#blazor-error-ui .dismiss { cursor: pointer; float: right; }