:root {
    --primary-blue: #007BF8;
    --primary-dark: #0167D5;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
}

.text-primary-blue { color: var(--primary-blue); }
.bg-primary-blue { background-color: var(--primary-blue); }
.border-primary-blue { border-color: var(--primary-blue); }
.hover-text-primary-blue:hover { color: var(--primary-blue); }
.hover-bg-primary-blue:hover { background-color: var(--primary-blue); }
.hover-border-primary-blue:hover { border-color: var(--primary-blue); }
.focus-ring-primary-blue:focus { --tw-ring-color: var(--primary-blue); }

.bg-gradient-blue {
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--primary-dark) 100%);
}

.text-gradient-blue {
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--primary-dark) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--primary-dark) 100%);
    color: white;
    padding: 12px 32px;
    border-radius: 9999px;
    font-weight: 600;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(0, 123, 248, 0.3);
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 123, 248, 0.4);
}

.card-hover {
    transition: all 0.3s ease;
}

.card-hover:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
}

.accordion-item {
    border-bottom: 1px solid #e5e7eb;
}

.accordion-button {
    width: 100%;
    text-align: left;
    padding: 20px 0;
    font-weight: 600;
    color: #1f2937;
    background: transparent;
    border: none;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.accordion-button:hover {
    color: var(--primary-blue);
}

.accordion-content {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
    color: #6b7280;
    padding-left: 0;
}

.accordion-content.active {
    max-height: 200px;
    padding-bottom: 20px;
}

.nav-link {
    position: relative;
    padding-bottom: 4px;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-blue);
    transition: width 0.3s ease;
}

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

.scroll-to-top {
    position: fixed;
    bottom: 20px;
    right: 20px;
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--primary-dark) 100%);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    z-index: 100;
    box-shadow: 0 4px 15px rgba(0, 123, 248, 0.3);
}

.scroll-to-top.active {
    opacity: 1;
    visibility: visible;
}

.scroll-to-top:hover {
    transform: translateY(-2px);
}

.section-title {
    position: relative;
    padding-bottom: 16px;
    margin-bottom: 32px;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 4px;
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--primary-dark) 100%);
    border-radius: 2px;
}

.section-title-left::after {
    left: 0;
    transform: translateX(0);
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.animate-fade-in-up {
    animation: fadeInUp 0.6s ease-out forwards;
}

.delay-100 { animation-delay: 0.1s; }
.delay-200 { animation-delay: 0.2s; }
.delay-300 { animation-delay: 0.3s; }
.delay-400 { animation-delay: 0.4s; }
.delay-500 { animation-delay: 0.5s; }