/* ============================================
   NOVAX MAIN CSS - OPTIMIZED FOR PERFORMANCE
   ============================================ */

/* ===== FONT DISPLAY OPTIMIZATION ===== */
@font-face {
    font-family: 'Poppins';
    font-display: swap;
}

/* ===== ROOT VARIABLES ===== */
:root {
    --primary: #9f5bff;
    --primary-dark: #7d3bff;
    --secondary: #ff6b00;
    --secondary-dark: #e55a00;
    --dark: #0a0418;
    --dark-light: #1c0d2b;
    --text: #ffffff;
    --text-secondary: #e9dfff;
    --gray: #b8b8b8;
    --radius: 12px;
    --shadow: 0 4px 20px rgba(0,0,0,0.4);
    --transition: all 0.3s ease;
}

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

/* ===== SKIP LINK ===== */
.skip-link {
    position: absolute;
    top: -60px;
    left: 0;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: white;
    padding: 12px 24px;
    text-decoration: none;
    font-weight: 600;
    border-radius: 0 0 8px 0;
    z-index: 10000;
    transition: top 0.3s;
    border: 2px solid white;
}
.skip-link:focus {
    top: 0;
    outline: 3px solid var(--secondary);
    outline-offset: 2px;
}

/* ===== FOCUS ===== */
*:focus-visible {
    outline: 3px solid var(--primary) !important;
    outline-offset: 2px !important;
    border-radius: 4px;
}
*:focus:not(:focus-visible) { outline: none; }

/* ===== SERVICES SECTION ===== */
.services-section {
    padding: 100px 0;
    background: var(--dark);
}

.section-title {
    text-align: center;
    font-size: clamp(1.8rem, 3.5vw, 2.5rem);
    font-weight: 700;
    margin-bottom: 20px;
    color: var(--text);
}

.section-intro {
    text-align: center;
    font-size: 1.1rem;
    color: var(--gray);
    max-width: 700px;
    margin: 0 auto 50px;
    line-height: 1.7;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    margin-top: 50px;
}

.service-card {
    background: rgba(255,255,255,0.04);
    border-radius: var(--radius);
    overflow: hidden;
    transition: var(--transition);
    border: 1px solid rgba(255,255,255,0.08);
}

.service-card:hover {
    transform: translateY(-10px);
    border-color: var(--primary);
    box-shadow: 0 15px 40px rgba(159,91,255,0.12);
}

.service-img {
    height: 200px;
    overflow: hidden;
}

.service-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.service-card:hover .service-img img {
    transform: scale(1.06);
}

.service-content {
    padding: 25px;
}

.service-content h3 {
    font-size: 1.3rem;
    margin-bottom: 15px;
    color: var(--text);
}

.service-content p {
    color: var(--gray);
    margin-bottom: 20px;
    line-height: 1.7;
}

.service-link {
    color: #b07dff;
    text-decoration: none;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    transition: gap 0.3s ease;
}

.service-link:hover {
    color: var(--secondary);
    gap: 14px;
}

/* ===== FOUNDATION SECTION ===== */
.foundation-section {
    padding: 100px 0;
    background: #070312;
}

.foundation-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 30px;
    margin-top: 50px;
}

.foundation-item {
    text-align: center;
    padding: 40px 25px;
    background: rgba(255,255,255,0.03);
    border-radius: var(--radius);
    transition: var(--transition);
}

.foundation-item:hover {
    background: rgba(159,91,255,0.08);
    transform: translateY(-5px);
}

.foundation-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 25px;
    background: rgba(159,91,255,0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.foundation-icon img {
    width: 40px;
    height: 40px;
}

.foundation-item h3 {
    font-size: 1.3rem;
    margin-bottom: 15px;
    color: var(--text);
}

.foundation-item p {
    color: var(--gray);
    line-height: 1.7;
}

/* ===== FEATURES SECTION ===== */
.features-section {
    padding: 100px 0;
    background: var(--dark);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
    gap: 25px;
    margin-top: 50px;
}

.feature-card {
    text-align: center;
    padding: 30px 20px;
    background: rgba(255,255,255,0.03);
    border-radius: var(--radius);
    transition: var(--transition);
}

.feature-card:hover {
    background: rgba(159,91,255,0.08);
    transform: translateY(-5px);
}

.feature-icon {
    width: 70px;
    height: 70px;
    margin: 0 auto 20px;
    background: rgba(159,91,255,0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.feature-icon img {
    width: 35px;
    height: 35px;
}

.feature-card h3 {
    font-size: 1.15rem;
    margin-bottom: 10px;
    color: var(--text);
}

.feature-card p {
    color: var(--gray);
    font-size: 0.95rem;
    line-height: 1.6;
}

/* ===== CTA SECTION ===== */
.cta-section {
    padding: 100px 0;
    background: linear-gradient(135deg, #8a4fd6 0%, var(--secondary) 100%);
    text-align: center;
}

.cta-content h2 {
    font-size: clamp(1.8rem, 3.5vw, 2.5rem);
    margin-bottom: 20px;
    color: var(--text);
}

.cta-content p {
    font-size: 1.1rem;
    color: rgba(255,255,255,0.92);
    margin-bottom: 40px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.cta-buttons {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
}

.cta-btn {
    padding: 15px 35px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    font-size: 1.1rem;
    transition: var(--transition);
    display: inline-block;
}

.cta-btn.primary {
    background: #ffffff;
    color: #8a4fd6;
}

.cta-btn.secondary {
    background: transparent;
    color: #ffffff;
    border: 2px solid rgba(255,255,255,0.35);
}

.cta-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.2);
}

.cta-btn.primary:hover {
    background: #f5f0ff;
}

.cta-btn.secondary:hover {
    background: rgba(255,255,255,0.1);
    border-color: rgba(255,255,255,0.6);
}

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
    .services-grid {
        grid-template-columns: 1fr;
        max-width: 420px;
        margin-left: auto;
        margin-right: auto;
    }
    .foundation-grid {
        grid-template-columns: 1fr 1fr;
    }
    .features-grid {
        grid-template-columns: 1fr 1fr;
    }
    .cta-buttons {
        flex-direction: column;
        align-items: center;
    }
    .cta-btn {
        width: 100%;
        max-width: 300px;
        text-align: center;
    }
    .services-section,
    .foundation-section,
    .features-section,
    .cta-section {
        padding: 60px 0;
    }
}

@media (max-width: 480px) {
    .foundation-grid {
        grid-template-columns: 1fr;
    }
    .features-grid {
        grid-template-columns: 1fr;
        max-width: 320px;
        margin-left: auto;
        margin-right: auto;
    }
}

/* ===== UTILITY ===== */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    border: 0;
}

/* ===== FIX DROPDOWN POSITION ===== */
.nav-item.dropdown {
    position: relative;
}

.nav-item.dropdown .dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    right: auto;
    background: rgba(15, 10, 35, 0.98);
    min-width: 240px;
    padding: 12px 0;
    border-radius: 12px;
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.5);
    border: 1px solid rgba(159, 91, 255, 0.2);
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 1000;
    backdrop-filter: blur(20px);
    list-style: none;
    margin: 0;
}

.nav-item.dropdown:hover .dropdown-menu,
.nav-item.dropdown:focus-within .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

/* ===== MOBILE DROPDOWN ===== */
@media (max-width: 992px) {
    .nav-item.dropdown .dropdown-menu {
        position: static;
        opacity: 1;
        visibility: visible;
        transform: none;
        background: rgba(0, 0, 0, 0.3);
        margin: 10px 0;
        box-shadow: none;
        border: 1px solid rgba(255, 255, 255, 0.1);
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.4s ease;
        padding: 0;
        min-width: auto;
        left: auto;
        right: auto;
    }
    
    .nav-item.dropdown.active .dropdown-menu {
        max-height: 500px;
        padding: 12px 0;
    }
    
    .nav-item.dropdown .dropdown-menu a {
        padding: 10px 20px 10px 30px;
    }
}