/* Primary Gradient Variables */
:root {
    --primary-gradient: linear-gradient(to right, #004e92, #000428);
    --primary-gradient-fallback: #000428;
    --primary-gradient-start: #004e92;
    --primary-gradient-end: #000428;
    --secondary-gradient: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --success-gradient: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    --tech-gradient: linear-gradient(135deg, #43e97b 0%, #38f9d7 100%);
}

/* Primary Gradient Background */
.bg-primary-gradient {
    background: #000428; /* fallback for old browsers */
    background: -webkit-linear-gradient(to right, #004e92, #000428); /* Chrome 10-25, Safari 5.1-6 */
    background: linear-gradient(to right, #004e92, #000428); /* W3C, IE 10+/ Edge, Firefox 16+, Chrome 26+, Opera 12+, Safari 7+ */
}

/* Primary Gradient Background Diagonal */
.bg-primary-gradient-diagonal {
    background: #000428; /* fallback for old browsers */
    background: -webkit-linear-gradient(to bottom right, #004e92, #000428); /* Chrome 10-25, Safari 5.1-6 */
    background: linear-gradient(to bottom right, #004e92, #000428); /* W3C, IE 10+/ Edge, Firefox 16+, Chrome 26+, Opera 12+, Safari 7+ */
}

/* Gradient Text */
.gradient-text {
    background: #000428; /* fallback for old browsers */
    background: -webkit-linear-gradient(to right, #004e92, #000428); /* Chrome 10-25, Safari 5.1-6 */
    background: linear-gradient(to right, #004e92, #000428); /* W3C, IE 10+/ Edge, Firefox 16+, Chrome 26+, Opera 12+, Safari 7+ */
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Modern Tech Animations */
@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-10px); }
}

.group:hover .absolute {
    animation: float 2s ease-in-out infinite;
}

/* Gradient Text Animation */
@keyframes gradient {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

.bg-gradient-to-r {
    background-size: 200% auto;
}

/* Smooth Transitions */
* {
    transition-timing-function: cubic-bezier(0.4, 0, 0.2, 1);
}

/* FAQ Animation */
.faq-content {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease-out, padding 0.3s ease-out;
}

.faq-content.active {
    max-height: 1000px;
    transition: max-height 0.5s ease-in, padding 0.3s ease-in;
}

.faq-toggle.active i {
    transform: rotate(180deg);
}

/* Back to Top Button */
#back-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 3rem;
    height: 3rem;
    background: #000428; /* fallback for old browsers */
    background: -webkit-linear-gradient(to right, #004e92, #000428); /* Chrome 10-25, Safari 5.1-6 */
    background: linear-gradient(to right, #004e92, #000428); /* W3C, IE 10+/ Edge, Firefox 16+, Chrome 26+, Opera 12+, Safari 7+ */
    color: white;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    display: none;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    z-index: 1000;
}

#back-to-top:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 12px rgba(0, 0, 0, 0.15);
}

#back-to-top.show {
    display: flex;
}

/* Smooth Scroll */
html {
    scroll-behavior: smooth;
}

/* Loading Animation */
@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.5;
    }
}

.loading {
    animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}