* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
html {
    scroll-snap-type: y proximity;
    scroll-behavior: smooth;           /* плавная прокрутка */
    overflow-y: scroll;
}
body {
    font-family: 'Inter', 'Segoe UI', Roboto, system-ui, sans-serif;
    color: #e2e8f0;
    background: #0c0c1d;
    background-image: radial-gradient(ellipse at 80% 0%, rgba(37,99,235,0.15) 0%, transparent 50%),
                      radial-gradient(ellipse at 20% 100%, rgba(16,185,129,0.10) 0%, transparent 50%);
    background-attachment: fixed;
    line-height: 1.6;
    position: relative;
    overflow-x: hidden;
}
#neuron-canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    pointer-events: none;
    filter: blur(8px);
    transform: scale(1.02);
}
.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 20px;
    position: relative;
    z-index: 1;
}
h1, h2, h3 {
    font-weight: 700;
    line-height: 1.2;
    color: #f1f5f9;
}
h1 { font-size: clamp(2rem, 5vw, 2.8rem); }
h2 { font-size: clamp(1.6rem, 4vw, 2.2rem); margin-bottom: 0.5rem; }
h3 { font-size: 1.25rem; margin-bottom: 0.5rem; color: #e2e8f0; }
p { color: #cbd5e1; margin-bottom: 1rem; }

.btn {
    display: inline-block;
    background: rgba(59, 130, 246, 0.85);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    color: #fff !important;
    padding: 14px 32px;
    border-radius: 50px;
    font-weight: 600;
    font-size: 1rem;
    text-decoration: none !important;
    border: 1px solid rgba(255,255,255,0.2);
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 8px 20px rgba(59,130,246,0.25);
    letter-spacing: 0.02em;
}
.btn:hover {
    background: rgba(59, 130, 246, 0.95);
    box-shadow: 0 12px 28px rgba(59,130,246,0.4);
    transform: translateY(-2px);
}
.btn-outline {
    background: rgba(255,255,255,0.08);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid rgba(59,130,246,0.6);
    color: #60a5fa !important;
    box-shadow: 0 4px 12px rgba(0,0,0,0.2);
}
.btn-outline:hover {
    background: rgba(59,130,246,0.15);
    border-color: #3b82f6;
    color: #93bbfd !important;
}

header {
    padding: 20px 0;
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(15,15,30,0.7);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(255,255,255,0.1);
    box-shadow: 0 4px 20px rgba(0,0,0,0.3);
}
.nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.logo {
    font-size: 1.5rem;
    font-weight: 800;
    color: #f1f5f9;
    background: rgba(255,255,255,0.05);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    padding: 6px 18px;
    border-radius: 40px;
    border: 1px solid rgba(255,255,255,0.15);
}
.logo span { color: #60a5fa; }
.nav-links { display: flex; gap: 20px; align-items: center; }
.nav-links a {
    color: #cbd5e1;
    font-weight: 500;
    background: rgba(255,255,255,0.05);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    padding: 8px 18px;
    border-radius: 30px;
    text-decoration: none;
    transition: background 0.2s;
    border: 1px solid rgba(255,255,255,0.1);
}
.nav-links a:hover {
    background: rgba(255,255,255,0.12);
    color: #f1f5f9;
}
@media (max-width: 768px) {
    .nav-links { display: none; }
}

section {
    scroll-snap-align: start;
    padding: 50px 0; /* уменьшенные отступы */
    scroll-margin-top: 80px;   /* высота шапки плюс небольшой запас */
    position: relative;
    z-index: 1;
}

section > .container {
    width: 100%;
}
.hero {
    text-align: center;
    padding-top: 80px;
    padding-bottom: 60px;
}
.hero p {
    font-size: 1.2rem;
    max-width: 700px;
    margin: 1.5rem auto 2rem;
    color: #cbd5e1;
}
.hero-buttons {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}

.grid-2 {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    align-items: center;
    width: 100%;
}
@media (max-width: 768px) {
    .grid-2 { grid-template-columns: 1fr; }
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
    margin-top: 2.5rem;
}

.card {
    background: rgba(25,25,45,0.6);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-radius: 24px;
    padding: 28px 24px;
    border: 1px solid rgba(255,255,255,0.08);
    box-shadow: 0 12px 30px rgba(0,0,0,0.3);
    transition: transform 0.2s, box-shadow 0.2s;
}
.card:hover {
    transform: translateY(-4px);
    box-shadow: 0 20px 40px rgba(0,0,0,0.5);
    border-color: rgba(255,255,255,0.15);
}
.card h3 { margin-bottom: 0.75rem; color: #f1f5f9; }
.card p { font-size: 0.95rem; color: #cbd5e1; }

.pricing-grid {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 24px;
    margin-top: 2.5rem;
    width: 100%;
}

.price-card {
    background: rgba(30, 30, 50, 0.65);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-radius: 28px;
    padding: 32px 24px;
    border: 1px solid rgba(255, 255, 255, 0.08);
    text-align: center;
    transition: all 0.3s ease;
    position: relative;
    box-shadow: 0 12px 28px rgba(0, 0, 0, 0.3);
    width: 280px;
    min-width: 280px;
    max-width: 280px;
    flex-shrink: 0;
}

.price-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 24px 44px rgba(0, 0, 0, 0.6);
    background: rgba(35, 35, 60, 0.75);
    border-color: rgba(255, 255, 255, 0.15);
}

.price-card.free {
    border: 2px solid rgba(16, 185, 129, 0.6);
    background: rgba(20, 50, 40, 0.65);
}

.price-card.free::before {
    content: "Бесплатно";
    position: absolute;
    top: -13px;
    left: 50%;
    transform: translateX(-50%);
    background: rgba(16, 185, 129, 0.9);
    backdrop-filter: blur(10px);
    color: #fff;
    padding: 5px 20px;
    border-radius: 30px;
    font-size: 0.8rem;
    font-weight: 600;
    border: 1px solid rgba(255, 255, 255, 0.4);
}

.price-card h3 {
    font-size: 1.4rem;
    margin-bottom: 0.5rem;
    color: #f1f5f9;
}

.price-card .users,
.price-card .orgs {
    font-size: 0.95rem;
    color: #cbd5e1;
    margin-bottom: 0.5rem;
}

.price-card .duration {
    font-size: 0.9rem;
    color: #34d399;
    font-weight: 600;
    margin-bottom: 0.75rem;
}

.price-card .price {
    font-size: 2.5rem;
    font-weight: 800;
    color: #f8fafc;
    margin-bottom: 0.25rem;
}

.price-card .price span {
    font-size: 1rem;
    font-weight: 400;
    color: #94a3b8;
}

.price-card .btn {
    margin-top: 1.5rem;
    width: 100%;
}
.duration {
    font-size: 0.9rem;
    color: #34d399;
    margin-bottom: 0.5rem;
}

.highlight-box {
    background: rgba(59,130,246,0.1);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-left: 4px solid #3b82f6;
    padding: 20px 24px;
    border-radius: 16px;
    margin: 2rem 0;
    border: 1px solid rgba(255,255,255,0.1);
    color: #e2e8f0;
}

.beta-badge {
    background: rgba(254,249,195,0.15);
    backdrop-filter: blur(8px);
    color: #fde047;
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
    display: inline-block;
    vertical-align: middle;
    margin-left: 8px;
    border: 1px solid rgba(254,249,195,0.3);
}

.contact-block {
    background: rgba(15,23,42,0.8);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    color: #f1f5f9;
    padding: 50px 40px;
    border-radius: 36px;
    text-align: center;
    border: 1px solid rgba(255,255,255,0.1);
    box-shadow: 0 20px 40px rgba(0,0,0,0.6);
}
.contact-block a { color: #93c5fd; font-weight: 600; }
.contact-block p { color: #cbd5e1; }

.chat-demo {
    background: rgba(25,25,45,0.7);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-radius: 24px;
    padding: 24px;
    border: 1px solid rgba(255,255,255,0.08);
    box-shadow: 0 20px 40px rgba(0,0,0,0.4);
    display: flex;
    flex-direction: column;
    height: 740px;
}
.chat-messages {
    flex: 1;
    overflow-y: auto;
    padding-right: 4px;
    display: flex;
    flex-direction: column;
    gap: 12px;
}
.msg {
    padding: 10px 16px;
    border-radius: 20px;
    max-width: 80%;
    word-wrap: break-word;
    opacity: 0;
    transform: translateY(10px);
    animation: fadeInUp 0.4s ease forwards;
}
.msg.user {
    align-self: flex-end;
    background: rgba(59,130,246,0.8);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255,255,255,0.2);
    color: #fff;
}
.msg.bot {
    align-self: flex-start;
    background: rgba(45,45,70,0.7);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255,255,255,0.1);
    color: #e2e8f0;
}
.typing-indicator {
    align-self: flex-start;
    background: rgba(45,45,70,0.7);
    backdrop-filter: blur(10px);
    border-radius: 20px;
    padding: 10px 16px;
    display: flex;
    gap: 4px;
    align-items: center;
    opacity: 0;
    transform: translateY(10px);
}
.typing-indicator span {
    width: 8px;
    height: 8px;
    background: #94a3b8;
    border-radius: 50%;
    animation: bounce 1.4s infinite ease-in-out both;
}
.typing-indicator span:nth-child(1) { animation-delay: -0.32s; }
.typing-indicator span:nth-child(2) { animation-delay: -0.16s; }

@keyframes fadeInUp {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}
@keyframes bounce {
    0%, 80%, 100% { transform: scale(0); }
    40% { transform: scale(1); }
}

footer {
    background: rgba(10,10,25,0.8);
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
    color: #94a3b8;
    padding: 30px 0;
    text-align: center;
    font-size: 0.9rem;
    border-top: 1px solid rgba(255,255,255,0.05);
}
img {
    border-radius: 18px;
    box-shadow: 0 20px 35px rgba(0,0,0,0.5);
}

.config-grid {
    display: flex;
    justify-content: center;
    gap: 24px;
    flex-wrap: wrap;
    margin-top: 2rem;
}
.config-card {
    background: rgba(25,25,45,0.6);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-radius: 24px;
    padding: 32px 24px;
    border: 1px solid rgba(255,255,255,0.08);
    box-shadow: 0 12px 30px rgba(0,0,0,0.3);
    text-align: center;
    min-width: 220px;
    transition: transform 0.2s;
}
.config-card:hover {
    transform: translateY(-4px);
}
.config-card h3 {
    color: #f1f5f9;
    font-size: 1.3rem;
    margin-bottom: 0.5rem;
}
.config-card .version {
    color: #94a3b8;
    font-size: 0.9rem;
}

.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0,0,0,0.7);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
}
.modal-content {
    background: rgba(25,25,45,0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-radius: 24px;
    padding: 40px;
    width: 400px;
    border: 1px solid rgba(255,255,255,0.1);
    box-shadow: 0 20px 40px rgba(0,0,0,0.6);
    color: #e2e8f0;
}
.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}
.modal-close {
    cursor: pointer;
    font-size: 28px;
    color: #94a3b8;
}
.modal-close:hover { color: #f1f5f9; }
.form-group {
    margin-bottom: 20px;
}
.form-group label {
    display: block;
    margin-bottom: 6px;
    color: #cbd5e1;
}
.form-group input {
    width: 100%;
    padding: 12px 16px;
    background: rgba(255,255,255,0.05);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: 12px;
    color: #f1f5f9;
    font-size: 1rem;
}
.form-group input:focus {
    outline: none;
    border-color: rgba(59,130,246,0.6);
}

.license-key {
    background: rgba(255,255,255,0.05);
    border: 1px dashed rgba(96,165,250,0.6);
    padding: 16px 24px;
    margin: 16px 0;
    font-family: monospace;
    font-size: 1.2rem;
    word-break: break-all;
    color: #60a5fa;
}

/* Кастомный скроллбар для WebKit (Chrome, Safari, Edge) */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: rgba(255, 255, 255, 0.05);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb {
    background: rgba(59, 130, 246, 0.4);
    border-radius: 4px;
    transition: background 0.2s;
}

::-webkit-scrollbar-thumb:hover {
    background: rgba(59, 130, 246, 0.7);
}

/* Кастомный скроллбар для Firefox */
* {
    scrollbar-width: thin;
    scrollbar-color: rgba(59, 130, 246, 0.4) rgba(255, 255, 255, 0.05);
}

/* Адаптивность для планшетов и телефонов */
@media (max-width: 768px) {
    h1 { font-size: clamp(1.8rem, 6vw, 2.4rem); }
    h2 { font-size: clamp(1.4rem, 5vw, 1.8rem); }
    
    .grid-2 {
        grid-template-columns: 1fr;
        gap: 24px;
    }

    .pricing-grid {
        gap: 16px;
    }

    .price-card {
        width: 100%;
        max-width: 320px;
        min-width: auto;
    }

    .chat-demo {
        height: 320px;
    }

    .modal-content {
        width: 90%;
        max-width: 400px;
        padding: 24px;
    }

    section {
        padding: 40px 0;
    }

    .nav-links {
        gap: 12px;
    }

    .nav-links a {
        padding: 6px 12px;
        font-size: 0.85rem;
    }
}

@media (max-width: 480px) {
    .price-card {
        max-width: 100%;
    }

    .chat-demo {
        height: 280px;
    }

    .modal-content {
        padding: 20px;
    }

    .hero p {
        font-size: 1rem;
    }
} 

.alert {
    padding: 15px;
    border-radius: 8px;
    margin-top: 20px;
}
.alert-success {
    background: rgba(16,185,129,0.2);
    color: #34d399;
    border: 1px solid rgba(16,185,129,0.5);
}
.alert-error {
    background: rgba(239,68,68,0.2);
    color: #f87171;
    border: 1px solid rgba(239,68,68,0.5);
}

img {
    max-width: 100%;
    height: auto;
}

.screenshots {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    justify-content: center;
    margin-top: 2rem;
}

.screenshots img {
    width: 320px;
    border-radius: 18px;
    box-shadow: 0 20px 35px rgba(0,0,0,0.5);
}

.slider {
    position: relative;
    max-width: 500px;
    margin: 0 auto;
    overflow: hidden;
    border-radius: 18px;
    box-shadow: 0 12px 28px rgba(0,0,0,0.3);
}

.slider-viewport {
    width: 100%;
    overflow: hidden;
}

.slider-track {
    display: flex;
    transition: transform 0.3s ease;
}

.slider-image {
    flex: 0 0 100%;          /* каждый слайд занимает 100% ширины вьюпорта */
    width: 100%;
    height: 400px;           /* фиксированная высота */
    object-fit: cover;       /* обрезка при необходимости */
}

/* Стрелки скрыты по умолчанию */
.slider-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(0,0,0,0.5);
    color: white;
    border: none;
    font-size: 24px;
    padding: 8px 12px;
    cursor: pointer;
    z-index: 10;
    border-radius: 50%;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: opacity 0.25s ease, background 0.2s ease;
    opacity: 0;                    /* по умолчанию прозрачны */
    pointer-events: none;          /* не перехватывают клики, когда скрыты */
}

/* При наведении на слайдер показываем стрелки */
.slider:hover .slider-btn {
    opacity: 1;
    pointer-events: auto;
}

/* Эффект наведения на саму стрелку */
.slider-btn:hover {
    background: rgba(0,0,0,0.8);
}

/* Для сенсорных устройств стрелки всегда видимы */
@media (hover: none) {
    .slider-btn {
        opacity: 1;
        pointer-events: auto;
    }
}

.slider-btn.prev {
    left: 10px;
}

.slider-btn.next {
    right: 10px;
}

.slider-dots {
    position: absolute;
    bottom: 10px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 6px;
}

.slider-dots button {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    border: none;
    background: rgba(255,255,255,0.5);
    cursor: pointer;
    transition: background 0.2s;
}

.slider-dots button.active {
    background: #3b82f6;
}

/* Адаптивность для мобильных */
@media (max-width: 768px) {
    .slider {
        max-width: 100%;
    }
    .slider-image {
        height: 250px;        /* уменьшаем высоту на телефонах */
    }
}