:root {
    --bg-primary: #f8fafc;
    --bg-white: #ffffff;
    --text-main: #0f172a;
    --text-muted: #64748b;
    --color-accent: #ef4444; 
    --color-accent-hover: #dc2626;
    --border-color: #e2e8f0;
    --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    background-color: var(--bg-primary);
    color: var(--text-main);
    line-height: 1.6;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Кнопки */
.btn {
    display: inline-block;
    padding: 14px 28px;
    border-radius: 8px;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.2s ease;
    cursor: pointer;
    border: none;
    font-size: 1rem;
    text-align: center;
}

.btn-primary {
    background-color: var(--color-accent);
    color: var(--bg-white);
}

.btn-primary:hover {
    background-color: var(--color-accent-hover);
    transform: translateY(-1px);
}

.btn-secondary {
    background-color: var(--bg-white);
    color: var(--text-main);
    border: 1px solid var(--border-color);
}

.btn-secondary:hover {
    background-color: var(--bg-primary);
}

.btn-outline {
    background-color: transparent;
    color: var(--color-accent);
    border: 1px solid var(--color-accent);
}

.btn-outline:hover {
    background-color: var(--color-accent);
    color: var(--bg-white);
}

.btn-block {
    display: block;
    width: 100%;
}

/* Шапка */
.header {
    background-color: var(--bg-white);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px;
}

.logo {
    font-size: 1.6rem;
    font-weight: 800;
    letter-spacing: -0.5px;
}

.logo-accent {
    color: var(--color-accent);
}

.logo-domain {
    font-size: 1rem;
    font-weight: 400;
    color: var(--text-muted);
}

.nav a {
    color: var(--text-main);
    text-decoration: none;
    margin-left: 24px;
    font-weight: 500;
    font-size: 0.95rem;
    transition: color 0.2s;
}

.nav a:hover {
    color: var(--color-accent);
}

/* Главный экран */
.hero {
    padding: 100px 0;
    background-color: var(--bg-white);
    border-bottom: 1px solid var(--border-color);
}

.hero-container {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 60px;
    align-items: center;
}

.badge {
    display: inline-block;
    background-color: #fee2e2;
    color: var(--color-accent);
    padding: 6px 14px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 20px;
}

.hero-content h1 {
    font-size: 3rem;
    line-height: 1.15;
    font-weight: 800;
    margin-bottom: 20px;
    letter-spacing: -1px;
}

.hero-content p {
    font-size: 1.2rem;
    color: var(--text-muted);
    margin-bottom: 30px;
}

.hero-features-list {
    margin-bottom: 35px;
}

.hero-feature-item {
    font-size: 1.05rem;
    margin-bottom: 10px;
    font-weight: 500;
}

.hero-actions {
    display: flex;
    gap: 16px;
}

/* Эмулятор панели на главном экране */
.hero-mockup-wrapper {
    background-color: #0f172a;
    border-radius: 16px;
    color: var(--bg-white);
    overflow: hidden;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    border: 1px solid #1e293b;
}

.mockup-header {
    background-color: #1e293b;
    padding: 15px 20px;
    font-size: 0.85rem;
    font-weight: 600;
    border-bottom: 1px solid #334155;
    letter-spacing: 0.5px;
}

.mockup-body {
    padding: 30px 20px;
}

.mockup-card {
    background-color: #1e293b;
    border-radius: 10px;
    padding: 20px;
    border: 1px solid #334155;
}

.card-title {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 12px;
    display: flex;
    justify-content: space-between;
}

.status-new {
    background-color: var(--color-accent);
    color: white;
    font-size: 0.75rem;
    padding: 3px 8px;
    border-radius: 4px;
}

.mockup-card p {
    font-size: 0.9rem;
    margin-bottom: 8px;
    color: #cbd5e1;
}

.card-items {
    border-top: 1px dashed #475569;
    border-bottom: 1px dashed #475569;
    padding: 12px 0;
    margin: 15px 0;
    font-family: monospace;
    font-size: 0.9rem;
    color: #38bdf8;
}

.card-footer {
    font-weight: 700;
    text-align: right;
    font-size: 1.1rem;
}

/* Табы */
.ecosystem {
    padding: 100px 0;
}

.section-title {
    text-align: center;
    font-size: 2.4rem;
    font-weight: 800;
    margin-bottom: 10px;
    letter-spacing: -0.5px;
}

.section-subtitle {
    text-align: center;
    color: var(--text-muted);
    font-size: 1.15rem;
    max-width: 700px;
    margin: 0 auto 50px auto;
}

.tabs-nav {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-bottom: 40px;
    background-color: #e2e8f0;
    padding: 6px;
    border-radius: 12px;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.tab-btn {
    flex: 1;
    padding: 12px 20px;
    border: none;
    background: transparent;
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-muted);
    cursor: pointer;
    border-radius: 8px;
    transition: all 0.2s;
}

.tab-btn.active {
    background-color: var(--bg-white);
    color: var(--text-main);
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
}

.tab-pane {
    display: none;
}

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

.tab-grid {
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: 50px;
    background-color: var(--bg-white);
    padding: 50px;
    border-radius: 16px;
    border: 1px solid var(--border-color);
}

.tab-info h3 {
    font-size: 1.8rem;
    font-weight: 800;
    margin-bottom: 20px;
}

.tab-info p {
    color: var(--text-muted);
    margin-bottom: 24px;
    font-size: 1.05rem;
}

.tab-info ul {
    list-style: none;
}

.tab-info li {
    margin-bottom: 15px;
    padding-left: 25px;
    position: relative;
    font-size: 0.95rem;
}

.tab-info li::before {
    content: "✓";
    color: var(--color-accent);
    font-weight: 800;
    position: absolute;
    left: 0;
}

.tab-visual .visual-card {
    background-color: var(--bg-primary);
    border: 1px dashed var(--border-color);
    border-radius: 12px;
    padding: 30px;
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.visual-card.bg-dark {
    background-color: #0f172a;
    color: white;
}

.visual-card h4 {
    font-size: 1.1rem;
    margin-bottom: 15px;
    font-weight: 700;
}

.visual-card p {
    font-size: 0.95rem;
    margin-bottom: 10px;
}

/* Интеграция IIKO */
.iiko-section {
    padding: 100px 0;
    background-color: var(--bg-white);
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
}

.flow-steps {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 15px;
    margin-top: 50px;
}

.flow-step {
    flex: 1;
    text-align: center;
    background-color: var(--bg-primary);
    padding: 30px 20px;
    border-radius: 12px;
    border: 1px solid var(--border-color);
}

.step-num {
    background-color: var(--color-accent);
    color: white;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    margin: 0 auto 15px auto;
}

.flow-step h4 {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 10px;
}

.flow-step p {
    font-size: 0.85rem;
    color: var(--text-muted);
}

.flow-arrow {
    font-size: 1.5rem;
    color: var(--text-muted);
}

/* Калькулятор */
.calculator-section {
    padding: 100px 0;
}

.calc-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    background-color: var(--bg-white);
    padding: 50px;
    border-radius: 16px;
    border: 1px solid var(--border-color);
}

.calc-inputs label {
    display: block;
    font-weight: 600;
    margin-bottom: 8px;
}

.calc-inputs input[type="number"] {
    width: 100%;
    padding: 12px;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    background-color: var(--bg-primary);
    font-size: 1rem;
    margin-bottom: 25px;
}

.calc-inputs input[type="range"] {
    width: 100%;
    margin-bottom: 10px;
}

.calc-results {
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 20px;
}

.result-box {
    background-color: var(--bg-primary);
    padding: 20px;
    border-radius: 10px;
    border-left: 4px solid var(--text-muted);
}

.result-box.highlighted {
    background-color: #fef2f2;
    border-left: 4px solid var(--color-accent);
}

.result-title {
    font-size: 0.9rem;
    color: var(--text-muted);
}

.result-val {
    font-size: 1.8rem;
    font-weight: 800;
    margin-top: 5px;
}

.result-saving {
    margin-top: 10px;
    font-weight: 700;
    color: #10b981;
}

/* Этапы */
.roadmap {
    padding: 100px 0;
    background-color: var(--bg-white);
}

.roadmap-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin-top: 40px;
}

.roadmap-item {
    background-color: var(--bg-primary);
    padding: 30px 20px;
    border-radius: 12px;
    border: 1px solid var(--border-color);
    position: relative;
}

.roadmap-num {
    font-size: 3rem;
    font-weight: 900;
    color: rgba(239, 68, 68, 0.15);
    position: absolute;
    top: 10px;
    right: 20px;
}

.roadmap-item h3 {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 10px;
}

.roadmap-item p {
    font-size: 0.85rem;
    color: var(--text-muted);
}

/* FAQ */
.faq {
    padding: 100px 0;
}

.faq-accordion {
    max-width: 800px;
    margin: 40px auto 0 auto;
}

.faq-item {
    background-color: var(--bg-white);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    margin-bottom: 15px;
    overflow: hidden;
}

.faq-question {
    padding: 20px;
    font-weight: 700;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    user-select: none;
}

/* Скрываем блок по умолчанию, отступы будут внутри */
.faq-answer {
    display: none; 
    padding: 20px;
    color: var(--text-muted);
    font-size: 0.95rem;
    border-top: 1px solid var(--border-color);
}

.faq-arrow {
    font-size: 0.75rem;
    transition: transform 0.2s ease;
}

/* Поворот стрелочки при активности */
.faq-item.active .faq-arrow {
    transform: rotate(180deg);
}

/* Форма */
.contact {
    padding: 100px 0;
    background-color: var(--bg-white);
}

.contact-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.contact-info h2 {
    font-size: 2.4rem;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 20px;
}

.contact-info p {
    color: var(--text-muted);
    font-size: 1.1rem;
    margin-bottom: 30px;
}

.contact-phone span {
    display: block;
    font-size: 0.9rem;
    color: var(--text-muted);
}

.contact-phone a {
    font-size: 1.6rem;
    font-weight: 700;
    color: var(--color-accent);
    text-decoration: none;
}

.contact-form-wrapper {
    background-color: var(--bg-primary);
    padding: 40px;
    border-radius: 16px;
    border: 1px solid var(--border-color);
}

.contact-form h3 {
    font-size: 1.4rem;
    margin-bottom: 20px;
}

.form-group {
    margin-bottom: 20px;
}

.form-group input {
    width: 100%;
    padding: 14px;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    background-color: var(--bg-white);
    font-size: 1rem;
}

.form-group input:focus {
    outline: none;
    border-color: var(--color-accent);
}

.form-response {
    margin-top: 15px;
    font-weight: 600;
    text-align: center;
}

.form-response.success { color: #10b981; }
.form-response.error { color: var(--color-accent); }

/* Подвал */
.footer {
    background-color: #0f172a;
    color: #94a3b8;
    padding: 40px 0;
    font-size: 0.9rem;
}

.footer-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

/* Мобильные */
@media (max-width: 992px) {
    .hero-container, .tab-grid, .calc-grid, .contact-container {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    .flow-steps {
        flex-direction: column;
        gap: 20px;
    }
    .flow-arrow {
        transform: rotate(90deg);
    }
    .tabs-nav {
        flex-wrap: wrap;
    }
}

/* Новые карточки режимов работы */
.modes-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 30px;
    margin-top: 50px;
}

.mode-card {
    background-color: var(--bg-white);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
}

.mode-card.highlighted {
    border-color: var(--color-accent);
}

.mode-header {
    background-color: var(--bg-primary);
    padding: 20px;
    font-weight: 700;
    font-size: 1.15rem;
    border-bottom: 1px solid var(--border-color);
}

.mode-card.highlighted .mode-header {
    background-color: #fef2f2;
    color: var(--color-accent);
    border-bottom: 1px solid #fecaca;
}

.mode-body {
    padding: 30px;
}

.mode-desc {
    color: var(--text-muted);
    font-size: 0.95rem;
    margin-bottom: 25px;
}

.mode-steps {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.m-step {
    display: flex;
    align-items: center;
    gap: 15px;
    font-size: 0.95rem;
    font-weight: 500;
}

.m-step span {
    background-color: #e2e8f0;
    color: var(--text-main);
    width: 28px;
    height: 28px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.85rem;
    font-weight: 700;
    flex-shrink: 0;
}

.mode-card.highlighted .m-step span {
    background-color: #fee2e2;
    color: var(--color-accent);
}

/* Специальная плашка предупреждения на табах */
.visual-card.bg-alert {
    background-color: #fffbeb;
    border: 1px solid #fef3c7;
    color: #92400e;
}

.visual-card.bg-alert h4 {
    color: #78350f;
}

/* Адаптивность для карточек режимов */
@media (max-width: 992px) {
    .modes-grid {
        grid-template-columns: 1fr;
    }
}

/* Новая сетка компонентов на главном экране */
.hero-components-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-bottom: 35px;
}

.hero-comp-item {
    display: flex;
    align-items: flex-start;
    gap: 12px;
}

.comp-icon {
    font-size: 1.6rem;
    line-height: 1;
    background-color: var(--bg-primary);
    padding: 8px;
    border-radius: 8px;
    flex-shrink: 0;
}

.comp-text {
    display: flex;
    flex-direction: column;
}

.comp-text strong {
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--text-main);
}

.comp-text span {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-top: 2px;
    line-height: 1.3;
}

/* Выделение блока с пиликаньем админки */
.hero-comp-item.highlight {
    grid-column: span 2;
    background-color: #fffbeb;
    border: 1px dashed #fef3c7;
    padding: 12px;
    border-radius: 10px;
}

.hero-comp-item.highlight .comp-icon {
    background-color: #fef3c7;
}

/* Адаптивность для мобильных телефонов */
@media (max-width: 768px) {
    .hero-components-grid {
        grid-template-columns: 1fr; /* На смартфонах выстраиваем в одну колонку */
    }
    .hero-comp-item.highlight {
        grid-column: span 1;
    }
}