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

:root {
    --bg-color: #fff;
    --text-color: #000;
    --border-color: #000;
    --secondary-bg: #f5f5f5;
    --secondary-text: #666;
}

body.dark {
    --bg-color: #1a1a1a;
    --text-color: #fff;
    --border-color: #666;
    --secondary-bg: #2a2a2a;
    --secondary-text: #999;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
    background: var(--bg-color);
    color: var(--text-color);
    line-height: 1.5;
    padding: 20px;
    max-width: 1200px;
    margin: 0 auto;
    transition: background 0.3s, color 0.3s;
}

header {
    margin-bottom: 40px;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--border-color);
}

.header-top {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
}

.theme-toggle {
    background: none;
    border: 1px solid var(--border-color);
    font-size: 24px;
    width: 40px;
    height: 40px;
    cursor: pointer;
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.2s;
}

.theme-toggle:hover {
    background: var(--secondary-bg);
}

header h1 {
    font-size: 32px;
    font-weight: 400;
    margin-bottom: 4px;
}

header p {
    font-size: 14px;
    color: var(--secondary-text);
}

.tabs {
    display: flex;
    gap: 0;
    margin-bottom: 30px;
    border-bottom: 1px solid var(--border-color);
}

.tab-button {
    padding: 12px 24px;
    background: none;
    border: none;
    border-bottom: 2px solid transparent;
    color: var(--secondary-text);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
    font-family: inherit;
}

.tab-button:hover {
    color: var(--text-color);
    background: var(--secondary-bg);
}

.tab-button.active {
    color: var(--text-color);
    border-bottom-color: var(--text-color);
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
}

.stats-section {
    margin-bottom: 40px;
    padding: 20px;
    border: 1px solid var(--border-color);
}

.stats-section h2 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 20px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 15px;
    margin-bottom: 30px;
}

.stat-card {
    padding: 20px;
    border: 1px solid var(--border-color);
    text-align: center;
}

.stat-value {
    font-size: 32px;
    font-weight: 600;
    margin-bottom: 5px;
}

.stat-label {
    font-size: 12px;
    color: var(--secondary-text);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.charts-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
}

.chart-wrapper {
    padding: 15px;
    border: 1px solid var(--border-color);
}

.chart-wrapper h3 {
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 15px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.chart-wrapper canvas {
    max-height: 250px;
}

form {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
    margin-bottom: 40px;
}

form input,
form select,
form button {
    padding: 10px;
    border: 1px solid var(--border-color);
    background: var(--bg-color);
    color: var(--text-color);
    font-size: 14px;
    font-family: inherit;
}

form input:focus,
form select:focus {
    outline: none;
    background: var(--secondary-bg);
}

form select:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

form button {
    grid-column: 1 / -1;
    background: var(--text-color);
    color: var(--bg-color);
    border: none;
    cursor: pointer;
    font-weight: 500;
}

form button:hover {
    opacity: 0.8;
}

.filters {
    margin-bottom: 30px;
    padding: 15px;
    border: 1px solid var(--border-color);
}

.filters h2 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 15px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.filters-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 15px;
}

.filter-group {
    grid-column: 1 / -1;
}

.filter-group label {
    display: block;
    margin-bottom: 8px;
    font-size: 14px;
    font-weight: 500;
}

.checkbox-group {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
}

.checkbox-group label {
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: normal;
    cursor: pointer;
}

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

.filters-grid select,
.filters-grid input {
    padding: 8px;
    border: 1px solid var(--border-color);
    background: var(--bg-color);
    color: var(--text-color);
    font-size: 14px;
    font-family: inherit;
}

.filters-grid select:focus,
.filters-grid input:focus {
    outline: none;
    background: var(--secondary-bg);
}

.filters-grid button {
    padding: 8px;
    border: 1px solid var(--border-color);
    background: var(--bg-color);
    color: var(--text-color);
    font-size: 14px;
    font-family: inherit;
    cursor: pointer;
}

.filters-grid button:hover {
    background: var(--secondary-bg);
}

#placesList {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.group {
    border: 1px solid var(--border-color);
    padding: 15px;
}

.group-title {
    font-size: 12px;
    font-weight: 600;
    margin-bottom: 15px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.place-row {
    display: flex;
    gap: 20px;
    padding: 10px 0;
    border-bottom: 1px solid var(--border-color);
    align-items: center;
    flex-wrap: wrap;
    opacity: 0.8;
}

.place-row:last-child {
    border-bottom: none;
}

.username {
    font-weight: 600;
    min-width: 100px;
    cursor: pointer;
    text-decoration: underline;
}

.username:hover {
    color: var(--secondary-text);
}

.place-info {
    display: flex;
    gap: 15px;
    flex-wrap: wrap;
    font-size: 14px;
    color: var(--secondary-text);
}

.place-info span {
    display: inline-block;
}

.place-numbers {
    font-weight: 600;
    color: var(--text-color);
}

.empty-message {
    text-align: center;
    color: var(--secondary-text);
    padding: 40px;
    font-size: 14px;
}

.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0,0,0,0.5);
}

.modal-content {
    background-color: var(--bg-color);
    color: var(--text-color);
    margin: 15% auto;
    padding: 20px;
    border: 1px solid var(--border-color);
    width: 90%;
    max-width: 400px;
    position: relative;
}

.close {
    color: var(--text-color);
    float: right;
    font-size: 28px;
    font-weight: bold;
    cursor: pointer;
    line-height: 20px;
}

.close:hover {
    color: var(--secondary-text);
}

.modal-content h3 {
    margin-bottom: 15px;
    font-size: 20px;
}

.modal-info {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.modal-info-item {
    padding: 8px 0;
    border-bottom: 1px solid var(--border-color);
}

.modal-info-item:last-child {
    border-bottom: none;
}

.modal-info-label {
    font-size: 12px;
    color: var(--secondary-text);
    margin-bottom: 4px;
}

.modal-info-value {
    font-size: 14px;
    color: var(--text-color);
}

footer {
    margin-top: 60px;
    padding-top: 20px;
    border-top: 1px solid var(--border-color);
    text-align: center;
    font-size: 12px;
    color: var(--secondary-text);
}

#toastContainer {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 10000;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.toast {
    background: var(--bg-color);
    border: 1px solid var(--border-color);
    padding: 15px 20px;
    min-width: 300px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
    display: flex;
    align-items: center;
    gap: 12px;
    animation: slideIn 0.3s ease-out;
    font-size: 14px;
}

.toast.success {
    border-left: 4px solid #43e97b;
}

.toast.error {
    border-left: 4px solid #ff6b6b;
}

.toast.warning {
    border-left: 4px solid #ffa726;
}

.toast-icon {
    font-size: 20px;
    flex-shrink: 0;
}

.toast-message {
    flex: 1;
    color: var(--text-color);
}

.toast-close {
    background: none;
    border: none;
    color: var(--secondary-text);
    font-size: 18px;
    cursor: pointer;
    padding: 0;
    width: 20px;
    height: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.toast-close:hover {
    color: var(--text-color);
}

@keyframes slideIn {
    from {
        transform: translateX(400px);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

@keyframes slideOut {
    from {
        transform: translateX(0);
        opacity: 1;
    }
    to {
        transform: translateX(400px);
        opacity: 0;
    }
}

.toast.hiding {
    animation: slideOut 0.3s ease-out forwards;
}

@media (max-width: 600px) {
    #toastContainer {
        left: 20px;
        right: 20px;
        top: 10px;
    }
    
    .toast {
        min-width: auto;
        width: 100%;
    }
    
    form {
        grid-template-columns: 1fr;
    }
    
    .filters-grid {
        grid-template-columns: 1fr;
    }
    
    .place-row {
        flex-direction: column;
        align-items: flex-start;
        gap: 8px;
    }
    
    .place-info {
        flex-direction: column;
        gap: 4px;
    }
}