/* ========================================
   CONFERÊNCIA WAVES - CSS PRINCIPAL
   ======================================== */

/* RESET E BASE */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: #333;
    background: linear-gradient(135deg, #ff6b6b 0%, #4ecdc4 25%, #45b7d1 50%, #96ceb4 75%, #feca57 100%);
    background-size: 400% 400%;
    animation: gradientShift 20s ease infinite;
    overflow-x: hidden;
    position: relative;
}

body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: transparent;
    z-index: -1;
    pointer-events: none;
}

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

.section {
    padding: 80px 0;
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-title {
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: 800;
    margin-bottom: 1rem;
    color: #ffffff;
    opacity: 1;
}

.title-underline {
    width: 100px;
    height: 4px;
    background: linear-gradient(45deg, #ff6b6b, #feca57);
    margin: 1rem auto;
    border-radius: 2px;
}

.section-subtitle {
    font-size: clamp(1rem, 3vw, 1.5rem);
    color: #ffffff;
    opacity: 1;
}

/* HEADER */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: rgba(0, 0, 0, 0.9);
    backdrop-filter: blur(10px);
    z-index: 1000;
    padding: 1rem 0;
    transition: all 0.3s ease;
}

.header.scrolled {
    background: rgba(0, 0, 0, 0.95);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
}

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

.logo {
    font-size: 1.5rem;
    font-weight: 800;
    color: white;
    text-decoration: none;
}

.nav {
    display: flex;
    gap: 2rem;
}

.nav-link {
    color: white;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
}

.nav-link:hover {
    color: #feca57;
}

/* SCROLL PROGRESS */
.scroll-progress {
    position: fixed;
    top: 0;
    left: 0;
    width: 0%;
    height: 4px;
    background: linear-gradient(45deg, #ff6b6b, #feca57);
    z-index: 1001;
    transition: width 0.1s ease;
}

/* FAQ SECTION */
.faq-section {
    padding: 80px 0;
    background: #ffffff;
    position: relative;
    overflow: hidden;
}

.faq-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(circle at 20% 20%, rgba(44, 90, 160, 0.03) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(64, 224, 208, 0.03) 0%, transparent 50%);
    z-index: 0;
}

.faq-content {
    position: relative;
    z-index: 1;
    max-width: 800px;
    margin: 0 auto;
}

/* RESPONSIVE DESIGN */
@media (max-width: 768px) {
    .header-content {
        flex-direction: column;
        gap: 1rem;
    }
    
    .nav {
        gap: 1rem;
    }
    
    .nav-link {
        font-size: 0.9rem;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }
    
    .section {
        padding: 60px 0;
    }
    
    .section-header {
        margin-bottom: 3rem;
    }
}


/* ACCESSIBILITY */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    
    body {
        background: #ff6b6b;
    }
}

/* PRINT STYLES */
@media print {
    .header,
    .scroll-progress,
    .floating-icons,
    .section-floating-icons,
    .video-effects,
    .expectations-effects {
        display: none;
    }
    
    body {
        background: white;
        color: black;
    }
    
    .section {
        padding: 20px 0;
    }
}