/* calc/assets/css/calculators/trailer-weight-distribution.css */

:root {
    --trail-primary: #D97706; /* Янтарь */
    --trail-bg: #FFFBEB;      /* Светлый янтарь */
    --trail-dark: #1E293B;    /* Асфальт (Slate-800) */
    --trail-accent: #3B82F6;  /* Синий */
    
    --stat-good: #10B981;
    --stat-warn: #F59E0B;
    --stat-bad: #EF4444;
    --stat-critical: #8B5CF6; /* Пурпурный для "отрицательной" нагрузки */
}

/* --- ВЕРХНЯЯ ЧАСТЬ --- */
.calc-header { margin-bottom: 40px; }
.subtitle { color: var(--text-secondary); margin-top: 12px; font-size: 16px; line-height: 1.5; }

.calc-grid { display: grid; grid-template-columns: 1fr; gap: 32px; align-items: start; }
@media (min-width: 992px) { .calc-grid { grid-template-columns: 1fr 1.1fr; gap: 48px; } }

.form-divider { border: none; height: 1px; background: #FDE68A; margin: 24px 0; opacity: 0.7; }

/* Инпуты */
.input-group { margin-bottom: 24px; }
.m-0 { margin-bottom: 0 !important; }
.label-with-icon { display: flex; align-items: center; gap: 8px; color: var(--trail-primary) !important; font-size: 15px !important; font-weight: 700 !important; margin-bottom: 12px; }

.input-wrapper { position: relative; display: flex; align-items: center; }
.input-wrapper input {
    width: 100%; padding: 14px 16px; padding-right: 48px;
    font-size: 16px; font-weight: 700; font-family: inherit;
    border: 1px solid #D1D5DB; border-radius: 12px;
    transition: all 0.2s; outline: none; background: #fff;
    color: #1F2937;
}
.input-wrapper input:focus { border-color: var(--trail-primary); box-shadow: 0 0 0 4px rgba(217, 119, 6, 0.15); }
.suffix { position: absolute; right: 16px; color: #9CA3AF; font-weight: 600; pointer-events: none; font-size: 14px; top: 50%; transform: translateY(-50%); }

.row-2-col { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }

.highlight-group { background: var(--trail-bg); padding: 20px; border-radius: 16px; border: 1px dashed var(--trail-primary); }
.helper-text { font-size: 12px; color: #6B7280; margin-top: 8px; line-height: 1.4; }
.group-title-small { font-size: 14px; font-weight: 700; color: var(--trail-primary); text-transform: uppercase; letter-spacing: 0.5px; margin: 0 0 16px 0; border-left: 3px solid var(--trail-primary); padding-left: 8px; }

/* Слайдер груза */
.slider-wrapper { margin-top: 16px; }
.slider-labels { display: flex; justify-content: space-between; font-size: 11px; font-weight: 700; color: #6B7280; margin-bottom: 8px; text-transform: uppercase; }
.cargo-slider {
    width: 100%; -webkit-appearance: none; height: 8px; background: #D1D5DB; border-radius: 4px; outline: none; cursor: pointer;
}
.cargo-slider::-webkit-slider-thumb {
    -webkit-appearance: none; width: 28px; height: 28px; background: var(--trail-accent); border-radius: 8px; cursor: grab; border: 2px solid #fff; box-shadow: 0 2px 6px rgba(0,0,0,0.3); transition: transform 0.1s;
}
.cargo-slider::-webkit-slider-thumb:active { transform: scale(1.1); cursor: grabbing; }


/* --- ПРАВАЯ ЧАСТЬ: РЕЗУЛЬТАТ (KILLER FEATURE) --- */
@media (min-width: 992px) { .sticky-card { position: sticky; top: 24px; transition: top 0.3s; } }

.trailer-result-card {
    background: var(--trail-dark);
    border: 2px solid #334155; padding: 32px;
    border-radius: 20px;
    box-shadow: 0 20px 40px -10px rgba(15, 23, 42, 0.5);
    color: #F8FAFC;
    overflow: hidden;
}

.result-header-tech { display: flex; justify-content: space-between; align-items: center; margin-bottom: 32px; border-bottom: 1px dashed #475569; padding-bottom: 16px; }
.result-header-tech h2 { font-size: 15px; font-weight: 800; color: #94A3B8; margin: 0; text-transform: uppercase; letter-spacing: 1px; }

.status-badge {
    padding: 6px 12px; border-radius: 6px; font-size: 12px; font-weight: 800; text-transform: uppercase;
    background: #334155; color: #fff; border: 1px solid #475569; transition: all 0.3s;
}

/* KILLER FEATURE: Симулятор (CSS Рисование) */
.simulator-window {
    background: #0F172A; border-radius: 16px; padding: 40px 20px;
    position: relative; margin-bottom: 32px; border: 1px solid #1E293B;
    box-shadow: inset 0 10px 30px rgba(0,0,0,0.5);
    display: flex; align-items: flex-end; justify-content: center; height: 180px;
}
/* Асфальт */
.simulator-window::after {
    content: ''; position: absolute; bottom: 35px; left: 10px; right: 10px;
    height: 2px; background: #334155; z-index: 1;
}

.car-hitch { display: flex; align-items: center; position: relative; z-index: 2; margin-right: -5px; }
.car-body { background: #475569; color: #94A3B8; font-size: 10px; font-weight: 800; padding: 10px 8px; border-radius: 4px 0 0 4px; border-right: 2px solid #1E293B; }
.hitch-ball { width: 12px; height: 12px; background: #94A3B8; border-radius: 50%; position: relative; }

.trailer-wrapper {
    display: flex; align-items: flex-end; position: relative; z-index: 2;
    transform-origin: 75% 100%; /* Точка вращения - ось колеса */
    transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.trailer-tongue { width: 40px; height: 6px; background: #64748B; margin-bottom: 12px; }
.trailer-body {
    width: 140px; height: 30px; background: rgba(51, 65, 85, 0.5);
    border: 3px solid #64748B; border-top: none;
    position: relative; margin-bottom: 12px;
}
/* Колесо */
.trailer-wheel {
    position: absolute; bottom: -15px; left: 75%; transform: translateX(-50%);
    width: 30px; height: 30px; background: #0F172A; border: 4px solid #94A3B8;
    border-radius: 50%;
}

/* Груз */
.cargo-box {
    position: absolute; bottom: 0; left: 50%; transform: translateX(-50%);
    width: 40px; height: 40px; background: var(--trail-accent);
    border-radius: 4px; box-shadow: 0 2px 10px rgba(59, 130, 246, 0.4);
    display: flex; align-items: center; justify-content: center;
    transition: left 0.2s linear; z-index: 3;
}
.cargo-box span { font-size: 10px; font-weight: 800; color: #fff; transform: rotate(-90deg); white-space: nowrap; }

/* Сенсоры (Данные на экране симулятора) */
.hitch-sensor { position: absolute; top: -35px; left: 0; background: #1E293B; padding: 4px 8px; border-radius: 6px; font-size: 12px; font-weight: 800; color: #fff; white-space: nowrap; border: 1px solid #475569; transition: all 0.3s; }
.hitch-sensor::after { content: ''; position: absolute; bottom: -5px; left: 50%; transform: translateX(-50%); border-width: 5px 5px 0; border-style: solid; border-color: inherit; border-bottom-color: transparent; border-left-color: transparent; border-right-color: transparent; }

.wheel-sensor { position: absolute; bottom: -25px; left: 50%; transform: translateX(-50%); font-size: 11px; font-weight: 700; color: #94A3B8; white-space: nowrap; }


.tech-divider { height: 1px; background: #334155; margin: 24px 0; }

/* Телеметрия */
.telemetry-grid { display: flex; justify-content: space-between; gap: 16px; margin-bottom: 24px; }
.tm-item { display: flex; flex-direction: column; background: #0F172A; padding: 16px; border-radius: 12px; flex: 1; border: 1px solid #1E293B; }
.tm-label { font-size: 11px; color: #64748B; text-transform: uppercase; font-weight: 700; margin-bottom: 4px; }
.tm-val { font-size: 20px; font-weight: 800; color: #F8FAFC; }

.alert-box {
    background: rgba(239, 68, 68, 0.1); border: 1px solid #EF4444; color: #FCA5A5;
    padding: 16px; border-radius: 12px; font-size: 13px; line-height: 1.5;
    display: flex; gap: 12px; align-items: flex-start;
}
.alert-box i { font-size: 20px; color: #EF4444; }


/* --- НИЖНЯЯ ЧАСТЬ (SEO, INFO) --- */
.info-wrapper { padding: 80px 0; margin-top: 60px; border-top: 1px solid #E5E7EB; }

.author-badge { display: flex; align-items: flex-start; gap: 16px; margin-bottom: 40px; padding: 20px; background: #F8FAFC; border-radius: 16px; border: 1px solid #E2E8F0; }
.author-avatar { width: 48px; height: 48px; background: var(--trail-dark); color: #fff; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 22px; flex-shrink: 0; }
.author-info { display: flex; flex-direction: column; min-width: 0; }
.author-name { font-size: 15px; font-weight: 700; color: #111827; line-height: 1.4; margin-bottom: 4px; }
.author-date { font-size: 13px; color: #6B7280; }

.icon-heading { display: flex; align-items: flex-start; gap: 16px; margin-bottom: 32px; font-size: 26px; font-weight: 800; color: #111827; line-height: 1.25; letter-spacing: -0.02em; }
.header-icon { display: flex; align-items: center; justify-content: center; width: 52px; height: 52px; border-radius: 14px; background: #fff; box-shadow: 0 4px 12px rgba(0,0,0,0.06); flex-shrink: 0; margin-top: -6px; font-size: 26px; }

.amber-icon { color: var(--trail-primary); }
.dark-icon { color: var(--trail-dark); }
.text-danger { color: #EF4444; font-weight: 700;}
.text-success { color: #10B981; font-weight: 700;}

.formulas-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 32px; margin-bottom: 56px; }
.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: 32px; transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1); display: flex; flex-direction: column; }
.formula-card:hover { transform: translateY(-6px); box-shadow: 0 12px 32px rgba(217, 119, 6, 0.1); border-color: rgba(217, 119, 6, 0.1); }
.formula-header { display: flex; flex-direction: column; align-items: flex-start; gap: 14px; margin-bottom: 20px; }
.formula-card h3 { margin: 0; font-size: 20px; font-weight: 700; color: var(--text-primary); line-height: 1.3; }

.badge-amber { background: var(--trail-primary); color: #fff; padding: 6px 12px; border-radius: 99px; font-size: 12px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.5px; display: inline-block; }
.badge-dark { background: var(--trail-dark); color: #fff; padding: 6px 12px; border-radius: 99px; font-size: 12px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.5px; display: inline-block; }

.formula-card p { font-size: 15px; color: var(--text-secondary); margin: 0; line-height: 1.6; font-weight: 500; }
.math-expression { background: var(--trail-bg); border: 1px dashed var(--trail-primary); padding: 18px; border-radius: 14px; font-weight: 700; color: var(--trail-dark); text-align: center; margin-bottom: 20px; font-size: 17px; font-family: 'Courier New', Courier, monospace; letter-spacing: 0.5px; }

.soft-divider { border: none; height: 1px; background: linear-gradient(90deg, transparent, #E5E7EB, transparent); margin: 56px 0; opacity: 0.7; }
.intro-text { font-size: 16px; color: var(--text-secondary); line-height: 1.6; margin-bottom: 40px; }
.calc-description p { font-size: 17px; line-height: 1.7; color: #4B5563; margin-bottom: 24px; }
.calc-description strong { color: #1F2937; font-weight: 700; }

.seo-table-wrapper { overflow-x: auto; margin-bottom: 48px; background: #fff; border-radius: 16px; border: 1px solid #E5E7EB; box-shadow: 0 4px 10px rgba(0,0,0,0.02); }
.seo-table-wrapper::-webkit-scrollbar { height: 6px; }
.seo-table-wrapper::-webkit-scrollbar-thumb { background: #D1D5DB; border-radius: 3px; }
.seo-table { width: 100%; border-collapse: collapse; min-width: 500px; text-align: left; }
.seo-table th { background: #F9FAFB; padding: 18px 24px; font-size: 13px; font-weight: 800; color: #6B7280; text-transform: uppercase; border-bottom: 1px solid #E5E7EB; letter-spacing: 0.5px; }
.seo-table td { padding: 18px 24px; font-size: 14px; border-bottom: 1px solid #F3F4F6; color: #374151; vertical-align: top; line-height: 1.5; }
.seo-table tr:last-child td { border-bottom: none; }

.howto-section { margin-top: 48px; }
.howto-step { display: flex; gap: 20px; margin-bottom: 32px; background: #fff; padding: 24px; border-radius: 20px; border: 1px solid #E5E7EB; transition: box-shadow 0.2s, transform 0.2s; }
.howto-step:hover { box-shadow: 0 10px 25px -5px rgba(0,0,0,0.05); transform: translateY(-2px); }
.step-num { width: 36px; height: 36px; background: var(--trail-bg); color: var(--trail-primary); font-weight: 800; border-radius: 50%; display: flex; align-items: center; justify-content: center; flex-shrink: 0; font-size: 15px; border: 1px solid rgba(217, 119, 6, 0.2); }
.step-content h4 { margin: 0 0 10px 0; font-size: 18px; color: #111827; font-weight: 700; }
.step-content p { margin: 0; font-size: 16px; color: #6B7280; line-height: 1.6; }

.faq-section .faq-item { background: #fff; border: 1px solid #E5E7EB; border-radius: 16px; margin-bottom: 16px; overflow: hidden; transition: all 0.2s ease; }
.faq-section .faq-item:hover { border-color: #D1D5DB; }
.faq-section .faq-item[open] { border-color: var(--trail-primary); box-shadow: 0 8px 20px rgba(217, 119, 6, 0.08); }
summary.faq-question { padding: 22px 28px; cursor: pointer; font-weight: 700; color: var(--text-primary); font-size: 17px; list-style: none; position: relative; display: flex; justify-content: space-between; align-items: center; transition: background 0.2s; }
.faq-section .faq-item[open] summary.faq-question { color: var(--trail-primary); background: var(--trail-bg); border-bottom: 1px solid #FDE68A; }
.faq-question::after { content: '+'; font-size: 26px; color: #9CA3AF; font-weight: 400; line-height: 1; transition: transform 0.3s; }
.faq-section .faq-item[open] summary.faq-question::after { content: '−'; color: var(--trail-primary); }
.faq-answer, .faq-item div[itemprop="text"] { padding: 28px; color: var(--text-secondary); line-height: 1.7; font-size: 16px; background: #fff; }
.faq-answer p { margin: 0; }

@media (max-width: 900px) {
    .calc-header { margin-bottom: 32px; }
    .formulas-grid { grid-template-columns: 1fr; gap: 20px; }
    .icon-heading { font-size: 22px; gap: 12px; }
    .header-icon { width: 44px; height: 44px; font-size: 22px; }
    .formula-card { padding: 24px; }
    summary.faq-question { padding: 18px 20px; font-size: 16px; }
    .faq-answer, .faq-item div[itemprop="text"] { padding: 20px; font-size: 15px; }
    .howto-step { padding: 20px; gap: 16px; flex-direction: column; }
    .step-num { margin-bottom: -8px; }
}

@media (max-width: 480px) {
    .author-badge { padding: 16px; gap: 12px; align-items: flex-start; flex-direction: row; }
    .author-avatar { width: 40px; height: 40px; font-size: 18px; }
    
    .row-2-col { grid-template-columns: 1fr; gap: 16px; }
    .input-wrapper input { padding-right: 48px; }
    
    .telemetry-grid { flex-direction: column; gap: 12px; }
    .simulator-window { padding: 40px 10px; } /* Уменьшил паддинги чтобы влезло */
}