/* --- Стили для Кондиционеров (Sky Theme) --- */
:root {
    --accent-sky: #0EA5E9; /* Sky 500 */
    --accent-sky-dark: #0284C7;
    --accent-sky-light: #E0F2FE;
    --gradient-sky-card: linear-gradient(135deg, #38BDF8 0%, #0284C7 100%);
}

.calc-header { margin-bottom: 32px; }
.subtitle { color: var(--text-secondary); margin-top: 8px; }

.calc-grid { display: grid; grid-template-columns: 1fr; gap: 24px; align-items: start; }
@media (min-width: 900px) { .calc-grid { grid-template-columns: 1.2fr 0.8fr; } }

/* Inputs */
.calc-inputs { gap: 24px; }
.input-group { margin-bottom: 24px; }
.input-group label { display: block; font-size: 14px; font-weight: 600; margin-bottom: 8px; color: var(--text-primary); }

/* ВАЖНО: Добавлено позиционирование, как в других калькуляторах */
.input-wrapper { 
    position: relative; 
    display: flex; 
    align-items: center; 
}

.input-wrapper input {
    width: 100%; 
    padding: 16px; 
    padding-right: 40px; /* Стандартный отступ */
    font-size: 18px; font-weight: 500;
    border: 1px solid #E5E7EB; border-radius: 12px;
    outline: none; transition: border 0.2s, box-shadow 0.2s;
    font-family: var(--font-main);
}
.input-wrapper input:focus { border-color: var(--accent-sky); box-shadow: 0 0 0 3px rgba(14, 165, 233, 0.15); }

/* Суффикс (м, м²) */
.suffix { 
    position: absolute; 
    right: 16px; 
    color: var(--text-secondary); 
    pointer-events: none;
}

/* Range Slider */
.range-slider {
    width: 100%; margin-top: 12px; -webkit-appearance: none; height: 6px;
    background: #E5E7EB; border-radius: 5px; outline: none; cursor: pointer;
}
.range-slider::-webkit-slider-thumb {
    -webkit-appearance: none; width: 20px; height: 20px; border-radius: 50%;
    background: var(--accent-sky); cursor: pointer; border: 2px solid #fff;
    box-shadow: 0 2px 6px rgba(0,0,0,0.2); transition: transform 0.1s;
}
.range-slider::-webkit-slider-thumb:hover { transform: scale(1.1); }

/* Sun Selector */
.sun-selector { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 8px; }
.sun-option { cursor: pointer; }
.sun-option input { display: none; }
.sun-card {
    border: 1px solid #E5E7EB; border-radius: 10px; padding: 12px 4px;
    display: flex; flex-direction: column; align-items: center; text-align: center;
    transition: all 0.2s; background: #fff; height: 100%;
}
.sun-icon { font-size: 20px; margin-bottom: 4px; }
.sun-card span { font-size: 12px; font-weight: 600; color: var(--text-secondary); }

.sun-option input:checked + .sun-card {
    border-color: var(--accent-sky); background: var(--accent-sky-light);
    color: var(--accent-sky-dark); box-shadow: 0 2px 8px rgba(14, 165, 233, 0.1);
}
.sun-option input:checked + .sun-card span { color: var(--accent-sky-dark); }

/* Счетчики (Counter Mini) */
.row-3-col { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 12px; }

.row-3-col .input-group label {
    font-size: 12px; 
    white-space: nowrap; 
    overflow: hidden;
    text-overflow: ellipsis;
}

.counter-mini {
    display: flex; align-items: center; background: #fff;
    border: 1px solid #E5E7EB; border-radius: 10px; overflow: hidden; height: 44px;
}
.cnt-btn {
    width: 32px; height: 100%; border: none; background: #F9FAFB;
    cursor: pointer; font-weight: bold; color: var(--text-secondary);
    transition: background 0.1s;
}
.cnt-btn:hover { background: #E5E7EB; color: var(--text-primary); }
.counter-mini input {
    width: 100%; height: 100%; text-align: center; border: none; 
    font-weight: 600; font-size: 16px; outline: none; padding: 0;
}

.divider { border: 0; border-top: 1px solid #E5E7EB; margin: 24px 0; }

/* Сноска про технику */
.tech-note {
    font-size: 12px;
    color: var(--text-secondary);
    margin-top: 12px;
    padding: 10px;
    background: #F0F9FF; /* Светло-голубой фон */
    border-radius: 8px;
    border: 1px solid #BAE6FD;
    line-height: 1.4;
}

/* Результаты (Sky Card) */
.card--sky { background: var(--gradient-sky-card); color: #fff; border: none; }
.card--sky h2 { color: rgba(255,255,255,0.9); margin-bottom: 20px; font-size: 16px; }
@media (min-width: 900px) { .sticky-card { position: sticky; top: 24px; } }

.ac-model-big {
    font-size: 40px; font-weight: 800; line-height: 1.1; margin-bottom: 24px;
    letter-spacing: -0.02em; white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}

.power-details { display: flex; flex-direction: column; gap: 12px; margin-bottom: 24px; }
.p-row { display: flex; justify-content: space-between; font-size: 14px; border-bottom: 1px solid rgba(255,255,255,0.2); padding-bottom: 8px; }
.p-row:last-child { border-bottom: none; }
.p-row span { opacity: 0.9; }
.p-row strong { font-weight: 700; font-size: 16px; }

/* Шкала мощности (Visual) */
.btu-scale-container {
    height: 40px; background: rgba(0,0,0,0.2); border-radius: 20px;
    position: relative; margin-bottom: 24px; padding: 4px;
}
.btu-fill {
    height: 100%; background: #fff; border-radius: 16px;
    width: 0%; transition: width 0.5s cubic-bezier(0.25, 0.8, 0.25, 1);
    box-shadow: 0 0 10px rgba(255,255,255,0.3);
}
.scale-mark {
    position: absolute; top: 50%; transform: translate(-50%, -50%);
    font-size: 11px;
    font-weight: 700; 
    color: rgba(255, 255, 255, 0.95);
    z-index: 1; pointer-events: none;
    text-shadow: 0 1px 2px rgba(0,0,0,0.3);
}
.btu-target {
    position: absolute; top: -6px; margin-left: -2px;
    width: 4px; height: 52px; background: #FFD700; 
    border-radius: 2px; transition: left 0.5s;
    box-shadow: 0 0 5px rgba(0,0,0,0.5);
    display: none;
}

.summary-divider { height: 1px; background: rgba(255,255,255,0.2); margin: 20px 0; }

.tip-box {
    font-size: 13px; line-height: 1.5;
    color: #ffffff !important; 
    background: rgba(0, 0, 0, 0.3) !important; 
    padding: 16px; border-radius: 12px;
    border: 1px solid rgba(255, 255, 255, 0.15);
}
.tip-box p { margin: 0; color: #ffffff !important; }

/* --- НОВЫЕ ИНФОРМАЦИОННЫЕ БЛОКИ (Адаптация под Sky/AC) --- */

.info-wrapper {
    padding: 60px 0 60px 0;
    margin-top: 60px;
    border-top: 1px solid rgba(0,0,0,0.06);
    margin-bottom: 20px;
}

.info-wrapper .container {
    max-width: 800px;
    margin: 0 auto;
}

/* Заголовки с иконками */
.icon-heading {
    display: flex;
    align-items: flex-start;
    gap: 16px;
    margin-bottom: 24px;
    font-size: 24px;
    font-weight: 800;
    color: var(--text-primary);
    line-height: 1.3;
}

.header-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    border-radius: 14px;
    background: #fff;
    box-shadow: 0 4px 12px rgba(0,0,0,0.04);
    flex-shrink: 0;
    margin-top: -4px;
}

.header-icon svg { width: 24px; height: 24px; stroke-width: 2px; }

/* Цвета иконок */
.blue-icon svg { color: #0EA5E9; } /* Sky */
.orange-icon svg { color: #F59E0B; }
.green-icon svg { color: #10B981; }
.red-icon svg { color: #EF4444; }

/* Маленькие подзаголовки */
.small-heading {
    margin-top: 40px;
    margin-bottom: 16px;
    font-size: 20px;
}
.small-heading .header-icon { width: 40px; height: 40px; }
.small-heading .header-icon svg { width: 20px; height: 20px; }

.intro-text {
    font-size: 16px;
    color: var(--text-secondary);
    margin-bottom: 32px;
    line-height: 1.6;
}

/* --- Секция Формул --- */
.formulas-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
    margin-bottom: 48px;
}

.formula-card {
    background: #fff;
    border: 1px solid rgba(0,0,0,0.04);
    box-shadow: 0 4px 20px rgba(0,0,0,0.03);
    border-radius: 24px; 
    padding: 24px;
    transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
    display: flex;
    flex-direction: column;
}
.formula-card:hover { transform: translateY(-4px); box-shadow: 0 12px 32px rgba(0,0,0,0.08); }

/* Вертикальный хедер (бейдж сверху) */
.formula-header {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
    margin-bottom: 16px;
}

.formula-card h3 {
    margin: 0;
    font-size: 18px;
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1.3;
}

/* Бейджи */
.badge-blue {
    background: #0EA5E9; color: #fff; /* Sky */
    padding: 6px 12px; border-radius: 99px;
    font-size: 11px; font-weight: 700;
    text-transform: uppercase; letter-spacing: 0.05em;
    display: inline-block;
}
.badge-green {
    background: #10B981; color: #fff;
    padding: 6px 12px; border-radius: 99px;
    font-size: 11px; font-weight: 700;
    text-transform: uppercase; letter-spacing: 0.05em;
    display: inline-block;
}

.formula-card p {
    font-size: 14px; color: var(--text-secondary);
    margin: 0; line-height: 1.5; font-weight: 500;
}

.math-expression {
    background: #F0F9FF; /* Sky Light */
    border: 1px solid #E0F2FE;
    padding: 12px 16px;
    border-radius: 12px;
    font-weight: 700;
    color: var(--accent-sky); /* Sky Accent */
    text-align: center;
    margin-bottom: 16px;
    font-size: 15px;
}

/* Разделитель */
.soft-divider {
    border: none; height: 1px;
    background: linear-gradient(90deg, transparent, #E5E7EB, transparent);
    margin: 48px 0;
}

/* Описание */
.calc-description p {
    font-size: 16px; line-height: 1.7;
    color: var(--text-secondary); margin-bottom: 24px;
}
.calc-description strong { color: var(--text-primary); }

/* FAQ (Новый стиль под Sky) */
.faq-section .faq-item {
    background: #fff; border: 1px solid #E5E7EB;
    border-radius: 12px; margin-bottom: 12px;
    overflow: hidden; transition: all 0.2s ease;
}

.faq-section .faq-item[open] {
    border-color: var(--accent-sky); 
    box-shadow: 0 4px 20px rgba(14, 165, 233, 0.15); /* Sky Shadow */
}

summary.faq-question {
    padding: 16px 20px; cursor: pointer;
    font-weight: 600; color: var(--text-primary);
    list-style: none; position: relative;
    display: flex; justify-content: space-between;
    align-items: center; transition: background 0.2s;
}

summary.faq-question:hover { background-color: #F9FAFB; }

.faq-section .faq-item[open] summary.faq-question {
    color: var(--accent-sky);
    background: #F0F9FF;
}

.faq-question::after {
    content: '+'; font-size: 20px;
    color: var(--text-secondary); font-weight: 400; line-height: 1;
}
.faq-question .icon-plus { display: none; }

.faq-section .faq-item[open] summary.faq-question::after {
    content: '−'; color: var(--accent-sky);
}

.faq-answer {
    padding: 20px; color: var(--text-secondary);
    line-height: 1.6; font-size: 15px;
}

/* --- МОБИЛЬНАЯ АДАПТАЦИЯ --- */
@media (max-width: 900px) {
    .formulas-grid { grid-template-columns: 1fr; gap: 16px; margin-bottom: 32px; }
    .icon-heading { font-size: 20px; gap: 12px; margin-bottom: 20px; }
    .header-icon { width: 40px; height: 40px; border-radius: 12px; }
    .header-icon svg { width: 20px; height: 20px; }
    
    .formula-card { padding: 24px; text-align: center; align-items: center; }
    .formula-header { align-items: center; width: 100%; }
    .math-expression { width: 100%; max-width: 300px; margin-left: auto; margin-right: auto; }
    
    .info-wrapper { margin-top: 40px; padding-top: 40px; }
}