:root {
    --color-background: #f3f4f6;
    --color-surface: #ffffff;
    --color-text: #1f2937;
    --color-text-secondary: #6b7280;
    --color-border: #d1d5db;

    --color-primary: #2563eb;
    --color-primary-hover: #1d4ed8;
    --color-primary-text: #ffffff;

    --color-control-hover: #e5e7eb;
    --color-success: #047857;
    --color-error: #b91c1c;

    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 12px;
    --spacing-lg: 16px;
    --spacing-xl: 24px;
    --spacing-2xl: 32px;

    --border-radius-sm: 6px;
    --border-radius-md: 8px;

    --container-width: 1100px;
    --control-padding-y: 10px;
    --control-padding-x: 12px;

    --transition-duration: 150ms;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: Arial, sans-serif;
    line-height: 1.5;
    color: var(--color-text);
    background: var(--color-background);
}

.container {
    width: min(
            var(--container-width),
            calc(100% - var(--spacing-2xl))
    );
    margin: 0 auto;
    padding: var(--spacing-2xl) 0;
}

.page-header {
    margin-bottom: var(--spacing-2xl);
}

.page-title {
    margin: 0 0 var(--spacing-sm);
}

.page-subtitle {
    margin: 0;
    color: var(--color-text-secondary);
}

.panel {
    margin-bottom: var(--spacing-xl);
    padding: var(--spacing-xl);
    background: var(--color-surface);
    border-radius: var(--border-radius-md);
}

.panel-title {
    margin: 0 0 var(--spacing-lg);
}

.login-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.panel-hint {
    margin: var(--spacing-sm) 0 0;
    color: var(--color-text-secondary);
}

.form {
    display: grid;
    gap: var(--spacing-lg);
}

.form-filters {
    grid-template-columns: repeat(
    auto-fit,
    minmax(180px, 1fr)
  );
    align-items: end;
}

.form-row {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-lg);
}

.form-field {
    display: grid;
    gap: var(--spacing-sm);
}

.form-field label {
    font-weight: 600;
}

input,
select,
textarea,
button {
    width: 100%;
    padding: var(--control-padding-y) var(--control-padding-x);
    font: inherit;
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-sm);
}

input,
select,
textarea {
    color: var(--color-text);
    background: var(--color-surface);
}

textarea {
    min-height: 100px;
    resize: vertical;
}

.button {
    cursor: pointer;
    font-weight: 600;
    transition:
            background-color var(--transition-duration),
            border-color var(--transition-duration);
}

.button:hover {
    background: var(--color-control-hover);
}

.button-primary {
    color: var(--color-primary-text);
    background: var(--color-primary);
    border-color: var(--color-primary);
}

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

.requests-list {
    display: grid;
    gap: var(--spacing-md);
}

.request-card {
    padding: var(--spacing-lg);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-sm);
}

.request-card-title {
    margin: 0 0 var(--spacing-sm);
}

.request-card-text {
    margin: var(--spacing-xs) 0;
}

.weather-section {
    display: grid;
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

.weather-section-hidden {
    display: none;
}

.weather-list {
    display: grid;
    gap: var(--spacing-md);
}

.weather-card {
    padding: var(--spacing-lg);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-sm);
}

.weather-card-title {
    margin: 0 0 var(--spacing-sm);
}

.weather-card-text {
    margin: var(--spacing-xs) 0;
}

.weather-suitability {
    margin: var(--spacing-sm) 0 0;
    font-weight: 600;
}

.weather-suitability-success {
    color: var(--color-success);
}

.weather-suitability-warning {
    color: var(--color-error);
}

.message {
    min-height: 24px;
    margin-bottom: 0;
}

.message-error {
    color: var(--color-error);
}

.message-success {
    color: var(--color-success);
}

[hidden] {
    display: none !important;
}

@media (max-width: 600px) {
    .form-row {
        grid-template-columns: 1fr;
    }
}