:root {
    --primary: #0066ff;
    --primary-light: #0099ff;
    --primary-dark: #0044cc;
    --primary-ultralight: #f0f8ff;
    --primary-gradient: linear-gradient(135deg, #0066ff, #00ccff);

    --secondary: #ff3366;
    --secondary-light: #ff6699;
    --secondary-dark: #ff0044;
    --secondary-gradient: linear-gradient(135deg, #ff3366, #ff66cc);

    --accent: #00ff99;
    --accent-light: #66ffcc;
    --accent-dark: #00cc66;
    --accent-gradient: linear-gradient(135deg, #00ff99, #00ffcc);

    --success: #00ff88;
    --warning: #d88200;
    --error: #ff3366;
    --info: #0099ff;

    --bg: #ffffff;
    --bg-dark: #f8f9ff;
    --bg-light: #f0f4ff;
    --bg-card: #ffffff;
    --bg-toggle: #dbdee7;

    --text: #0a0a12;
    --text-light: #4a4a6a;
    --text-lighter: #7a7a9a;

    --border: #e0e4ff;
    --border-light: #f0f4ff;
    --border-dark: #d0d4f0;

    --border-glow: 0 0 8px rgba(0, 102, 255, 0.2);

    --shadow: 0 4px 20px rgba(0, 102, 255, 0.1);
    --shadow-sm: 0 2px 10px rgba(0, 102, 255, 0.08);
    --shadow-md: 0 6px 25px rgba(0, 102, 255, 0.15);
    --shadow-lg: 0 10px 35px rgba(0, 102, 255, 0.2);

    --radius: 12px;
    --radius-sm: 8px;
    --radius-lg: 16px;

    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

[data-theme="dark"] {
    --primary: #0066ff;
    --primary-light: #0099ff;
    --primary-dark: #0044cc;
    --primary-ultralight: #e6f2ff;
    --primary-gradient: linear-gradient(135deg, #0066ff, #00ccff);
    --primary-glow: 0 0 15px rgba(0, 102, 255, 0.4);

    --secondary: #ff3366;
    --secondary-light: #ff6699;
    --secondary-dark: #ff0044;
    --secondary-gradient: linear-gradient(135deg, #ff3366, #ff66cc);
    --secondary-glow: 0 0 15px rgba(255, 51, 102, 0.4);

    --accent: #00ff99;
    --accent-light: #66ffcc;
    --accent-dark: #00cc66;
    --accent-gradient: linear-gradient(135deg, #00ff99, #00ffcc);
    --accent-glow: 0 0 15px rgba(0, 255, 153, 0.4);

    --success: #00ff88;
    --warning: #ffcc00;
    --error: #ff3366;
    --info: #0099ff;

    --bg: #0a0a12;
    --bg-dark: #12121f;
    --bg-light: #1a1a2e;
    --bg-card: #1a1a2e;
    --bg-toggle: #3e3e60;

    --text: #ffffff;
    --text-light: #a0a0c0;
    --text-lighter: #6a6a8a;

    --border: #2a2a4a;
    --border-light: #3a3a5a;
    --border-dark: #1a1a3a;

    --border-glow: 0 0 8px rgba(0, 102, 255, 0.3);

    --shadow: 0 4px 20px rgba(0, 102, 255, 0.2);
    --shadow-sm: 0 2px 10px rgba(0, 102, 255, 0.15);
    --shadow-md: 0 6px 25px rgba(0, 102, 255, 0.25);
    --shadow-lg: 0 10px 35px rgba(0, 102, 255, 0.3);
}

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

body {
    font-family: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    overflow-x: hidden;
    transition: background-color 0.3s ease, color 0.3s ease;
    background-image:
        radial-gradient(circle at 15% 50%, rgba(0, 102, 255, 0.05) 0%, transparent 25%),
        radial-gradient(circle at 85% 30%, rgba(255, 51, 102, 0.05) 0%, transparent 25%);
}

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

/* Навигация */
nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 0;
    position: sticky;
    top: 0;
    background: var(--bg);
    z-index: 100;
    transition: background-color 0.3s ease;
    border-bottom: 1px solid var(--border);
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-weight: 700;
    font-size: 1.5rem;
    color: var(--text);
}

.logo a {
    text-decoration: none;
    color: var(--text);
}

.logo-icon {
    width: 32px;
    height: 32px;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.logo-icon::before {
    content: '';
    position: absolute;
    width: 150%;
    height: 150%;
    background: linear-gradient(45deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    animation: shine 3s infinite linear;
}

@keyframes shine {
    0% {
        transform: translateX(-100%) rotate(45deg);
    }

    100% {
        transform: translateX(100%) rotate(45deg);
    }
}

.nav-links {
    display: flex;
    gap: 32px;
    align-items: center;
}

.nav-link {
    color: var(--text-light);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
    position: relative;
    cursor: pointer;
}

.nav-link:hover {
    color: var(--primary);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary);
    transition: var(--transition);
}

.nav-link:hover::after {
    width: 100%;
}

/* Переключатель темы */
.theme-toggle {
    background: none;
    border: none;
    cursor: pointer;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--bg-toggle);
    transition: var(--transition);
}

.theme-toggle:hover {
    transform: scale(1.1);
    background-color: var(--primary);
    color: white;
}

/* Переключатель языка */
.language-switch {
    display: flex;
    align-items: center;
}

.switch {
    position: relative;
    display: inline-block;
    width: 70px;
    height: 32px;
}

.switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--bg-toggle);
    border-radius: 34px;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 8px;
    border: 1px solid var(--border);
}

.slider:before {
    position: absolute;
    content: "";
    height: 24px;
    width: 24px;
    left: 4px;
    bottom: 3px;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    border-radius: 50%;
    transition: var(--transition);
    z-index: 2;
}

input:checked+.slider:before {
    transform: translateX(38px);
}

.lang-text {
    font-size: 0.7rem;
    font-weight: 600;
    transition: var(--transition);
    z-index: 1;
}

.lang-text.ru {
    color: var(--text);
    opacity: 1;
}

.lang-text.en {
    color: var(--text);
    opacity: 1;
}

input:checked+.slider .lang-text.ru {
    color: var(--text);
    opacity: 1;
}

input:checked+.slider .lang-text.en {
    color: white;
    opacity: 1;
}

.btn {
    padding: 14px 42px;
    border-radius: var(--radius-sm);
    font-weight: 600;
    text-decoration: none;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 8px;
    position: relative;
    overflow: hidden;
    border: none;
    cursor: pointer;
}

.btn::after {
    content: '';
    position: absolute;
    width: 100%;
    height: 100%;
    top: 0;
    left: -100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: 0.5s;
}

.btn:hover::after {
    left: 100%;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: white;
    box-shadow: var(--shadow-md);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(79, 70, 229, 0.3);
}

/* Герой секция */
.hero {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: 80px 0 40px;
    position: relative;
    justify-content: center;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background:
        radial-gradient(circle at 20% 30%, rgba(0, 102, 255, 0.15) 0%, transparent 40%),
        radial-gradient(circle at 80% 70%, rgba(255, 51, 102, 0.15) 0%, transparent 40%);
    animation: gradientMove 15s ease infinite;
    z-index: -1;
    pointer-events: none;
}

@keyframes gradientMove {
    0% {
        background-position: 20% 30%, 80% 70%;
    }

    50% {
        background-position: 30% 40%, 70% 60%;
    }

    100% {
        background-position: 20% 30%, 80% 70%;
    }
}

.hero h1 {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 24px;
    max-width: 800px;
    background: linear-gradient(90deg, var(--primary), var(--secondary), var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-shadow: 0 0 30px rgba(0, 102, 255, 0.3);
}

.hero p {
    font-size: 1.1rem;
    color: var(--text-light);
    max-width: 700px;
    margin-bottom: 40px;
}

/* Стили для уведомления о временной недоступности скачивания */
.download-notice {
    background: linear-gradient(135deg, rgba(245, 158, 11, 0.1), rgba(245, 158, 11, 0.05));
    border: 2px solid var(--warning);
    border-radius: var(--radius-lg);
    padding: 24px;
    margin-bottom: 30px;
    display: flex;
    gap: 20px;
    align-items: flex-start;
    box-shadow: 0 0 20px rgba(245, 158, 11, 0.1);
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
    margin-top: 60px;

}

.download-notice .notice-icon {
    font-size: 2rem;
    min-width: 40px;
    color: var(--warning);

}

.download-notice .notice-content h3 {
    color: var(--warning);
    margin-bottom: 16px;
    font-size: 1.3rem;
}

.download-notice .notice-content p {
    margin-bottom: 12px;
    color: var(--text);
    line-height: 1.6;
}

/* Стили для неактивных кнопок скачивания */
.disabled-download-btn {
    background: var(--bg-light) !important;
    color: var(--text-lighter) !important;
    cursor: not-allowed !important;
    opacity: 0.7;
    position: relative;
    overflow: hidden;
}

/* Стили для кнопок платформ */
.platform-buttons {
    display: flex;
    justify-content: center;
    gap: 16px;
    flex-wrap: wrap;
    margin-bottom: 60px;
}

.platform-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 24px;
    background: var(--bg-card);
    border-radius: var(--radius);
    border: 1px solid var(--border);
    transition: var(--transition);
    min-width: 250px;
    text-align: center;
    box-shadow: var(--shadow-sm);
}

.platform-btn:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
    border-color: var(--primary);
}

.platform-icon {
    font-size: 2.5rem;
    margin-bottom: 16px;
    color: var(--primary);
}

.platform-name {
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--text);
}

.platform-version {
    font-size: 0.9rem;
    color: var(--text-light);
    margin-bottom: 16px;
}

/* Стили для истории версий */
.version-history {
    background: var(--bg-dark);
    padding: 80px 0;
}

.section-title {
    text-align: center;
    margin-bottom: 60px;
}

.section-title h2 {
    font-size: 2.5rem;
    margin-bottom: 16px;
    color: var(--text);
}

.section-title p {
    color: var(--text-light);
    max-width: 600px;
    margin: 0 auto;
}

.version-timeline {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
    padding-left: 30px;
}

.version-timeline::before {
    content: '';
    position: absolute;
    left: 7px;
    top: 0;
    height: 100%;
    width: 2px;
    background: var(--primary-gradient);
}

.version-item {
    position: relative;
    margin-bottom: 40px;
    padding: 24px;
    background: var(--bg-card);
    border-radius: var(--radius);
    border: 1px solid var(--border);
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.version-item:hover {
    transform: translateX(5px);
    box-shadow: var(--shadow-md);
}

.version-item::before {
    content: '';
    position: absolute;
    left: -30px;
    top: 32px;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: var(--primary);
    border: 3px solid var(--bg);
}

.version-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
}

.version-number {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--primary);
}

.version-date {
    color: var(--text-light);
    font-size: 0.9rem;
}

.version-features {
    margin-top: 16px;
}

.version-features h4 {
    margin-bottom: 12px;
    color: var(--text);
}

.version-features ul {
    list-style: none;
    padding-left: 0;
}

.version-features li {
    margin-bottom: 8px;
    padding-left: 24px;
    position: relative;
    color: var(--text-light);
}

.version-features li::before {
    content: '•';
    position: absolute;
    left: 0;
    color: var(--primary);
    font-weight: bold;
    font-size: 1.2rem;
}

/* Стили для FAQ */
.faq-section {
    padding: 80px 0;
    background: var(--bg);
}

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

.faq-item {
    margin-bottom: 20px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
    transition: var(--transition);
}

.faq-item:hover {
    border-color: var(--primary-light);
    box-shadow: var(--shadow-sm);
}

.faq-question {
    padding: 20px;
    background: var(--bg-card);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-weight: 600;
    color: var(--text);
    transition: var(--transition);
}

.faq-question:hover {
    background: var(--bg-light);
}

.faq-answer {
    padding: 0 20px;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease, padding 0.3s ease;
    background: var(--bg-light);
    color: var(--text-light);
}

.faq-item.active .faq-answer {
    max-height: 300px;
    padding: 20px;
}

.faq-icon {
    transition: transform 0.3s ease;
}

.faq-item.active .faq-icon {
    transform: rotate(180deg);
}

/* Футер */
footer {
    background: linear-gradient(135deg, var(--bg-dark), var(--bg));
    padding: 60px 0 30px;
    border-top: 1px solid var(--border);
    position: relative;
}

footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 1px;
    background: linear-gradient(90deg, var(--primary), var(--secondary), var(--accent));
    opacity: 0.3;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-column h3 {
    font-size: 1.2rem;
    margin-bottom: 20px;
    color: var(--text);
}

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: 12px;
}

.footer-links a {
    color: var(--text-light);
    text-decoration: none;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 8px;
}

.footer-links a:hover {
    color: var(--primary);
}

.footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    color: var(--text-light);
    font-size: 0.9rem;
}

/* Модальное окно */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(5px);
    z-index: 10000;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.modal.show {
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 1;
}

.modal-content {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    width: 90%;
    max-width: 500px;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border);
    animation: modalSlideIn 0.3s ease;
}

@keyframes modalSlideIn {
    from {
        opacity: 0;
        transform: translateY(-50px) scale(0.9);
    }

    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 24px;
    border-bottom: 1px solid var(--border);
}

.modal-header h3 {
    color: var(--text);
    font-size: 1.3rem;
    font-weight: 600;
    margin: 0;
}

.modal-close {
    background: none;
    border: none;
    cursor: pointer;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-light);
    transition: var(--transition);
}

.modal-close:hover {
    background: var(--bg-light);
    color: var(--error);
}

.modal-body {
    padding: 32px;
    text-align: center;
}

.modal-icon {
    margin-bottom: 20px;
}

.modal-body p {
    color: var(--text-light);
    margin-bottom: 16px;
    line-height: 1.6;
}

.modal-footer {
    display: flex;
    gap: 12px;
    justify-content: center;
    padding: 24px;
    border-top: 1px solid var(--border);
}

/* Адаптивность */
@media (max-width: 768px) {
    .hero h1 {
        font-size: 2rem;
    }

    .download-notice {
        flex-direction: column;
        text-align: center;
        gap: 15px;
    }

    .download-notice .notice-icon {
        margin: 0 auto;
    }

    .platform-buttons {
        flex-direction: column;
        align-items: center;
    }

    .platform-btn {
        width: 100%;
        max-width: 300px;
    }

    .version-timeline {
        padding-left: 20px;
    }

    .version-item::before {
        left: -20px;
    }

    .version-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 10px;
    }

    .nav-links {
        gap: 20px;
    }

    .nav-link {
        display: none;
    }

    .modal-content {
        width: 95%;
        margin: 20px;
    }

    .modal-footer {
        flex-direction: column;
    }

    .modal-body {
        padding: 24px;
    }
}