/* --- 1. Цветовая палитра и базовые переменные --- */
:root {
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Arial, sans-serif;
    --bg-color: #f9fafb;
    --card-color: #ffffff;
    --border-color: #e5e7eb;
    --text-primary: #111827;
    --text-secondary: #6b7280;
    --accent-color: #4f46e5;
    --accent-color-hover: #4338ca;
    --success-color: #16a34a;
    --danger-color: #dc2626;
    --warning-color: #f59e0b;
    --border-radius: 6px;
}

body {
    font-family: var(--font-sans);
    margin: 40px;
    background-color: var(--bg-color);
    color: var(--text-primary);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}
.container { max-width: 1100px; margin: auto; }
h1, h2, h3 { margin: 0; font-weight: 600; }

/* --- Заголовок страницы --- */
.page-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 24px;
}
h1.page-title {
    color: var(--text-primary);
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 15px;
    margin-bottom: 24px;
    font-size: 24px;
    display: flex;
    align-items: center;
}

/* --- Карточки --- */
.client-card {
    border: 1px solid var(--border-color);
    padding: 24px;
    margin: 15px 0;
    border-radius: var(--border-radius);
    background: var(--card-color);
    box-shadow: none;
    transition: border-color 0.2s;
}
.client-card:hover { border-color: #d1d5db; }

/* --- Кнопки --- */
.btn {
    padding: 9px 16px;
    margin: 0;
    border: 1px solid transparent;
    border-radius: var(--border-radius);
    cursor: pointer;
    text-decoration: none;
    display: inline-block;
    font-size: 14px;
    font-weight: 500;
    font-family: var(--font-sans);
    transition: background-color 0.2s, border-color 0.2s;
}
.btn:disabled { opacity: 0.6; cursor: not-allowed; }
.btn-primary { background-color: var(--accent-color); color: white; }
.btn-primary:hover:not(:disabled) { background-color: var(--accent-color-hover); }
.btn-secondary {
    background-color: var(--card-color);
    color: var(--text-primary);
    border-color: #d1d5db;
}
.btn-secondary:hover:not(:disabled) {
    background-color: var(--bg-color);
    border-color: #9ca3af;
}

/* --- Поля формы --- */
.form-group { margin-bottom: 16px; }
.form-group label {
    display: block;
    margin-bottom: 6px;
    font-weight: 500;
    font-size: 14px;
    color: var(--text-primary);
}
.form-input, .period-select {
    -webkit-appearance: none;
    appearance: none;
    width: 100%;
    padding: 9px 12px;
    border: 1px solid #d1d5db;
    border-radius: var(--border-radius);
    box-sizing: border-box;
    font-size: 14px;
    font-family: var(--font-sans);
    background-color: var(--card-color);
    color: var(--text-primary);
    transition: border-color 0.2s, box-shadow 0.2s;
}
.form-input:focus, .period-select:focus {
    outline: none;
    border-color: var(--accent-color);
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.2);
}
select.form-input {
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3e%3cpath fill='none' stroke='%236b7280' stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M2 5l6 6 6-6'/%3e%3c/svg%3e");
    background-repeat: no-repeat;
    background-position: right 0.75rem center;
    background-size: 16px 12px;
    padding-right: 32px;
}

/* --- Панель управления --- */
.controls-grid {
    display: grid;
    grid-template-columns: 1fr 2fr 1fr 2fr auto;
    gap: 16px;
    align-items: end;
}

/* --- Вкладки --- */
.tabs {
    display: flex;
    border-bottom: 1px solid var(--border-color);
    margin-bottom: 24px;
    gap: 4px;
}
.tab-btn {
    padding: 10px 20px;
    border: none;
    background: none;
    cursor: pointer;
    font-size: 14px;
    font-weight: 500;
    font-family: var(--font-sans);
    color: var(--text-secondary);
    border-bottom: 2px solid transparent;
    margin-bottom: -1px;
    transition: color 0.2s, border-color 0.2s;
}
.tab-btn:hover { color: var(--text-primary); }
.tab-btn.active {
    color: var(--accent-color);
    border-bottom-color: var(--accent-color);
}
.tab-content { display: none; }
.tab-content.active { display: block; }

/* --- Блок результатов --- */
.results-container {
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    background: var(--card-color);
    padding: 24px;
    margin-top: 24px;
    min-height: 200px;
}
.results-placeholder {
    text-align: center;
    padding: 60px 20px;
    color: var(--text-secondary);
    font-size: 15px;
}

/* --- Плашка токенов --- */
.token-info {
    display: flex;
    gap: 24px;
    padding: 12px 16px;
    background-color: #eef2ff;
    border-left: 4px solid var(--accent-color);
    border-radius: var(--border-radius);
    margin-bottom: 24px;
    font-size: 14px;
    color: #3730a3;
}
.token-info span { font-weight: 500; }