:root {
    --bg: #f4f6fb;
    --panel: #ffffff;
    --border: #d9e1ec;
    --text: #1f2a37;
    --accent: #2563eb;
    --danger: #e11d48;
    --muted: #6b7280;
    --holiday: #dc2626;
    --holiday-bg: #fee2e2;
    --holiday-border: #fca5a5;
    --vacation: #059669;
    --vacation-bg: #d1fae5;
    --vacation-border: #6ee7b7;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: 'Inter', 'Segoe UI', Tahoma, sans-serif;
    background: var(--bg);
    color: var(--text);
}

.app-header {
    padding: 2rem clamp(1rem, 4vw, 3rem);
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
}

.config-summary span {
    color: var(--muted);
    margin-right: 0.35rem;
}

.layout {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
    padding: 0 clamp(1rem, 4vw, 3rem) 3rem;
}

.panel-full {
    grid-column: 1 / -1;
}

.panel {
    background: var(--panel);
    border: 1px solid var(--border);
    border-radius: 1rem;
    padding: 1.5rem;
    box-shadow: 0 10px 25px rgba(31, 42, 55, 0.05);
}

.panel-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    margin-bottom: 1rem;
}

form {
    display: grid;
    gap: 1rem;
}

label {
    display: flex;
    flex-direction: column;
    font-size: 0.9rem;
    gap: 0.35rem;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
}

.checkbox-label input[type="checkbox"] {
    width: 1.25rem;
    height: 1.25rem;
    cursor: pointer;
}

.form-radio-group {
    display: flex;
    gap: 1.5rem;
    padding: 0.5rem 0;
}

.radio-label {
    display: flex;
    flex-direction: row;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
}

.radio-label input[type="radio"] {
    width: auto;
    margin: 0;
    cursor: pointer;
}

input, button, select {
    font: inherit;
}

input[type="date"],
input[type="time"],
input[type="number"],
input[type="text"] {
    padding: 0.65rem 0.75rem;
    border-radius: 0.6rem;
    border: 1px solid var(--border);
    background: #fcfdff;
}

.form-actions {
    display: flex;
    gap: 0.75rem;
    justify-content: flex-end;
}

button {
    border: none;
    border-radius: 0.6rem;
    padding: 0.65rem 1.25rem;
    cursor: pointer;
}

button.primary {
    background: var(--accent);
    color: #fff;
}

button.ghost {
    background: transparent;
    border: 1px solid var(--border);
    color: var(--text);
}

button.danger {
    color: var(--danger);
    border-color: var(--danger);
}

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

table {
    width: 100%;
    border-collapse: collapse;
}

th, td {
    text-align: left;
    padding: 0.75rem 0.5rem;
    border-bottom: 1px solid var(--border);
    font-size: 0.9rem;
}

.week-view {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: 1rem;
}

.week-day {
    border: 2px solid var(--border);
    border-radius: 0.75rem;
    padding: 1rem;
    background: var(--panel);
    min-height: 180px;
}

.week-day.is-holiday {
    border-color: var(--holiday-border);
    background: var(--holiday-bg);
}

.day-header {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
    margin-bottom: 0.75rem;
    padding-bottom: 0.75rem;
    border-bottom: 1px solid var(--border);
}

.week-day.is-holiday .day-header {
    border-bottom-color: var(--holiday-border);
}

.day-name {
    font-weight: 600;
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--muted);
}

.week-day.is-holiday .day-name {
    color: var(--holiday);
}

.day-date {
    font-size: 1.1rem;
    font-weight: 600;
}

.day-holiday-badge {
    display: none;
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--holiday);
    background: rgba(220, 38, 38, 0.1);
    padding: 0.25rem 0.5rem;
    border-radius: 0.375rem;
    margin-top: 0.25rem;
    align-self: flex-start;
}

.week-day.is-holiday .day-holiday-badge {
    display: block;
}

.day-entry.is-vacation {
    background: var(--vacation-bg);
    border-left: 3px solid var(--vacation);
}

.day-entry.is-vacation .entry-time {
    color: var(--vacation);
    font-weight: 600;
}

.day-content {
    min-height: 80px;
}

.day-entry {
    display: none;
    flex-direction: column;
    gap: 0.5rem;
}

.day-entry.has-data {
    display: flex;
}

.entry-time {
    font-size: 0.85rem;
    color: var(--muted);
}

.entry-duration {
    font-size: 1rem;
    font-weight: 600;
    color: var(--accent);
}

.entry-difference {
    display: none;
    font-size: 0.85rem;
    font-weight: 600;
    padding: 0.25rem 0.5rem;
    border-radius: 0.375rem;
    align-self: flex-start;
}

.entry-difference.positive {
    color: #059669;
    background: rgba(5, 150, 105, 0.1);
}

.entry-difference.negative {
    color: #dc2626;
    background: rgba(220, 38, 38, 0.1);
}

.entry-comment {
    font-size: 0.85rem;
    color: var(--text);
    opacity: 0.8;
}

.entry-actions {
    display: flex;
    gap: 0.5rem;
    margin-top: 0.5rem;
}

button.small {
    padding: 0.4rem 0.75rem;
    font-size: 0.8rem;
}

.day-empty {
    display: block;
    font-size: 0.85rem;
    color: var(--muted);
    font-style: italic;
    text-align: center;
    padding: 1rem 0;
}

.day-entry.has-data + .day-empty {
    display: none;
}

.week-navigation {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.week-navigation button {
    padding: 0.5rem 0.75rem;
    min-width: 2.5rem;
    font-size: 1.2rem;
    line-height: 1;
}

#week-range {
    font-weight: 600;
    min-width: 200px;
    text-align: center;
}

.week-stats {
    display: flex;
    gap: 2rem;
    padding: 1rem 1.5rem;
    background: var(--bg);
    border-bottom: 1px solid var(--border);
    flex-wrap: wrap;
    align-items: center;
}

.week-stat-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.9rem;
    color: var(--muted);
}

.week-stat-item strong {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text);
}

.week-stat-item .badge {
    font-size: 1.1rem;
    font-weight: 600;
    padding: 0.25rem 0.75rem;
    border-radius: 0.375rem;
}

.week-stat-item .badge.positive {
    color: #059669;
    background: #d1fae5;
}

.week-stat-item .badge.negative {
    color: var(--danger);
    background: #fee2e2;
}

.week-empty {
    grid-column: 1 / -1;
    text-align: center;
    padding: 3rem;
    color: var(--muted);
    font-style: italic;
}

.flags {
    color: var(--muted);
    font-size: 0.8rem;
}

.badge {
    display: inline-flex;
    min-width: 5rem;
    justify-content: center;
    padding: 0.25rem 0.5rem;
    border-radius: 999px;
    background: rgba(37, 99, 235, 0.15);
    color: var(--accent);
}

.badge.negative {
    color: var(--danger);
    background: rgba(225, 29, 72, 0.15);
}

.badge.positive {
    color: var(--holiday);
    background: rgba(15, 118, 110, 0.12);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: 1rem;
    margin: 0;
}

.stats-grid dt {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--muted);
}

.stats-grid dd {
    margin: 0.35rem 0 0;
    font-size: 1.2rem;
    font-weight: 600;
}

.row-actions {
    white-space: nowrap;
}

@media (max-width: 640px) {
    .form-actions {
        flex-direction: column;
    }

    button {
        width: 100%;
    }
}