:root {
    --primary-color: #4A90E2;        /* свежий синий */
    --secondary-color: #1C1F2B;      /* глубокий серо-синий */
    --text-color: #F5F7FA;           /* светло-серый для читаемости */
    --background-color: #1C1F2B;     /* тот же глубокий фон */
    --white: #ffffff;
}

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

html {
    overflow-x: hidden;
}

body {
    font-family: 'Roboto', sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--background-color);
    overflow-x: hidden;
}

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

/* Header Styles */
.header {
    background-color: var(--secondary-color);
    box-shadow: 0 2px 5px rgba(0,0,0,0.2);
    position: fixed;
    width: 100%;
    left: 0;
    right: 0;
    top: 0;
    z-index: 1000;
    isolation: isolate;
}

.header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 20px;
    min-height: 72px;
}

.logo img {
    height: 48px;
    width: auto;
    max-width: 220px;
    object-fit: contain;
}

.nav {
    display: flex;
    align-items: center;
    gap: 20px;
}

.nav a:not(.btn) {
    color: var(--text-color);
    text-decoration: none;
    font-weight: 500;
}

.nav a:not(.btn):hover {
    color: var(--primary-color);
}

/* Button Styles */
.btn {
    padding: 10px 20px;
    border: none;
    border-radius: 55px;
    cursor: pointer;
    font-weight: 500;
    transition: all 0.3s ease;
}

.btn-login {
    background-color: transparent;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
}

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

.btn-primary {
    background-color: var(--primary-color);
    color: var(--white);
    font-size: 1.2em;
    padding: 15px 30px;
}
.feature-link {
    display: block;
    text-decoration: none;
    color: inherit;
}


/* No hero/banner on internal pages */

main {
    padding-top: 72px; /* clear fixed header */
}

/* Features Section */
.features {
    padding: 80px 0;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    text-align: center;
}

.feature-item {
    padding: 20px;
    background: var(--secondary-color);
    border-radius: 10px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.2);
    color: var(--text-color);
    transition: transform 0.3s ease;
    overflow: hidden;
}

.feature-item:hover {
    transform: translateY(-5px);
}

.feature-item img {
    width: 100%;
    height: auto;
    max-height: 245px;
    object-fit: cover;
    border-radius: 8px;
    margin-bottom: 20px;
    display: block;
}

.feature-item h3 {
    color: var(--primary-color);
    margin-bottom: 10px;
    font-size: 1.4em;
}

.feature-item p {
    color: var(--text-color);
    font-size: 1.1em;
    line-height: 1.4;
}

/* Footer */
.footer {
    background: linear-gradient(180deg, #161922 0%, #1C1F2B 100%);
    color: var(--text-color);
    padding: 48px 0 0;
    border-top: 3px solid var(--primary-color);
    margin-top: 60px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.2fr 1fr 1fr 1fr;
    gap: 40px;
    padding-bottom: 32px;
    max-width: 1200px;
    margin: 0 auto;
}

.footer-col { text-align: left; }

.footer-brand .footer-logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--white);
    text-decoration: none;
    letter-spacing: 0.02em;
    display: inline-block;
    margin-bottom: 8px;
}

.footer-brand .footer-logo:hover { color: var(--primary-color); }

.footer-tagline {
    font-size: 0.9rem;
    color: rgba(245, 247, 250, 0.7);
    margin-bottom: 20px;
    font-weight: 500;
}

.footer-cta { display: flex; gap: 12px; flex-wrap: wrap; }
.footer-cta .btn { padding: 8px 18px; font-size: 0.9rem; }

.footer-heading {
    font-size: 0.85rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--primary-color);
    margin-bottom: 16px;
}

.footer-list { list-style: none; padding: 0; margin: 0; }
.footer-list li { margin-bottom: 10px; }

.footer-list a,
.footer-link {
    color: rgba(245, 247, 250, 0.9);
    text-decoration: none;
    font-size: 0.95rem;
    transition: color 0.2s ease;
}

.footer-list a:hover,
.footer-link:hover { color: var(--primary-color); }

.footer-18 {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--white);
    margin-bottom: 6px;
}

.footer-bga, .footer-link { display: inline-block; margin-top: 4px; font-size: 0.9rem; }

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    padding: 20px 0;
    text-align: center;
}

.footer-copyright { margin: 0; font-size: 0.85rem; color: rgba(245, 247, 250, 0.6); }
.footer-buttons { display: none; }
.copyright { margin-top: 20px; font-size: 0.9em; }

/* Mobile Navigation */
.mobile-nav {
    display: none;
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background-color: var(--secondary-color);
    padding: 15px;
    box-shadow: 0 -2px 10px rgba(0, 0, 0, 0.2);
    z-index: 1000;
    border-top: 2px solid var(--primary-color);
    width: 100%;
    box-sizing: border-box;
}

.mobile-nav .btn {
    width: 100%;
    margin: 5px 0;
    padding: 12px;
    font-size: 1.1em;
    font-weight: 600;
    display: block;
}

.mobile-nav .btn-login {
    background-color: transparent;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
}

.mobile-nav .btn-register {
    background-color: var(--primary-color);
    color: var(--white);
    border: 2px solid var(--primary-color);
}

.mobile-nav .btn:hover {
    opacity: 0.9;
    transform: translateY(-1px);
}

/* Mobile Styles */
@media (max-width: 768px) {
    .container {
        padding: 0 16px;
    }

    .header .nav {
        display: none;
    }

    .header .container {
        padding: 10px 16px;
        min-height: 64px;
    }

    .logo img {
        height: 40px;
        max-width: 160px;
    }

    .mobile-nav {
        display: flex;
        flex-direction: row;
        gap: 10px;
        position: fixed;
        bottom: 0;
        left: 0;
        right: 0;
        width: 100%;
        background-color: var(--secondary-color);
        padding: 12px 16px;
        box-shadow: 0 -2px 10px rgba(0, 0, 0, 0.2);
        z-index: 1000;
        border-top: 2px solid var(--primary-color);
        box-sizing: border-box;
    }

    .mobile-nav .btn {
        flex: 1;
        width: auto;
        margin: 0;
        padding: 12px 16px;
        font-size: 0.95rem;
    }

    body {
        padding-bottom: 80px;
    }

    .footer {
        padding-bottom: 100px;
        margin-top: 40px;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        gap: 24px;
        padding-bottom: 24px;
        text-align: center;
    }

    .footer-col { text-align: center; }
    .footer-cta { justify-content: center; }
    .footer-buttons { display: none; }

    .feature-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 12px;
    }

    .mobile-nav {
        padding: 10px 12px;
        gap: 8px;
    }

    .mobile-nav .btn {
        padding: 10px 12px;
        font-size: 0.9rem;
    }

    body {
        padding-bottom: 72px;
    }

    .footer {
        padding-bottom: 88px;
    }
}

/* Content Section Styles */
/* Same step under header on internal pages */
.content {
    padding: 48px 0 80px;
    color: var(--text-color);
}

.content h1 {
    font-size: 2.5em;
    margin-bottom: 30px;
    color: var(--primary-color);
}

.content h2 {
    font-size: 2em;
    margin: 40px 0 20px;
    color: var(--primary-color);
}

.content h3 {
    font-size: 1.5em;
    margin: 30px 0 15px;
    color: var(--primary-color);
}

.content p {
    margin-bottom: 20px;
    line-height: 1.8;
}

.content ul, .content ol {
    margin: 20px 0;
    padding-left: 20px;
}

.content li {
    margin-bottom: 10px;
    line-height: 1.6;
}

.content em {
    font-style: italic;
    color: var(--primary-color);
}

.content strong {
    font-weight: 700;
}

/* Table Styles */
.info-table {
    width: 100%;
    border-collapse: collapse;
    margin: 30px 0;
    background-color: rgba(255, 255, 255, 0.05);
    border-radius: 8px;
    overflow: hidden;
}

.info-table td {
    padding: 15px;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.info-table tr:first-child td {
    background-color: var(--primary-color);
    color: var(--white);
    font-weight: 700;
}

.info-table tr:nth-child(even) {
    background-color: rgba(255, 255, 255, 0.02);
}

/* Mobile Styles for Content */
@media (max-width: 768px) {
    .content {
        padding: 40px 0;
    }

    .content h1 {
        font-size: 2em;
    }

    .content h2 {
        font-size: 1.7em;
    }

    .content h3 {
        font-size: 1.3em;
    }

    .info-table {
        display: block;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
        white-space: nowrap;
    }

    .info-table td {
        padding: 10px 12px;
        font-size: 0.9rem;
    }
}

/* Cookie banner & footer links */
.cookie-banner {
    display: none;
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: var(--secondary-color);
    border-top: 2px solid var(--primary-color);
    padding: 16px 20px;
    z-index: 9999;
    box-shadow: 0 -2px 10px rgba(0,0,0,0.2);
}
.cookie-banner.cookie-banner-visible {
    display: block;
}
.cookie-banner p {
    margin: 0;
    max-width: 1200px;
    margin-left: auto;
    margin-right: auto;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 12px;
}
.cookie-banner a { color: var(--primary-color); }
.cookie-banner .btn { margin-left: 8px; }
.footer-links { margin-bottom: 8px; }
.footer-links a { color: var(--primary-color); text-decoration: none; }
.footer-links a:hover { text-decoration: underline; }
.footer-18 { font-size: 0.9em; margin-bottom: 8px; }
.footer-18 a { color: var(--primary-color); }

@media (max-width: 768px) {
    .cookie-banner {
        padding: 12px 16px;
        bottom: 72px;
        left: 0;
        right: 0;
    }
    .cookie-banner p {
        font-size: 0.85rem;
        gap: 10px;
        justify-content: center;
    }
    .cookie-banner .btn {
        margin-left: 0;
        padding: 8px 14px;
        font-size: 0.85rem;
    }
}