/* ===== Custom Styles for The Steen Laboratory ===== */

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

/* ===== Navbar ===== */
#navbar {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid transparent;
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

#navbar.scrolled {
    border-bottom-color: #e2e3e5;
    box-shadow: 0 1px 20px rgba(0, 0, 0, 0.06);
}

.nav-logo-text {
    transition: color 0.3s ease;
}

/* ===== Nav Links ===== */
.nav-link {
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: #ff7f50;
    border-radius: 1px;
    transition: width 0.3s ease;
}

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

/* ===== Mobile Menu ===== */
.mobile-menu-link {
    position: relative;
    padding-left: 0;
    transition: padding-left 0.2s ease;
}

.mobile-menu-link:hover {
    padding-left: 8px;
}

/* ===== Hero ===== */
#hero {
    position: relative;
}

#hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(ellipse at 20% 50%, rgba(255, 127, 80, 0.06) 0%, transparent 60%),
        radial-gradient(ellipse at 80% 20%, rgba(42, 44, 49, 0.04) 0%, transparent 50%);
    pointer-events: none;
}

/* ===== Service Cards ===== */
.service-card {
    transition: transform 0.3s ease, background-color 0.3s ease, box-shadow 0.3s ease;
}

.service-card:hover {
    transform: translateY(-4px);
}

/* ===== Process Steps ===== */
.process-step {
    transition: transform 0.3s ease;
}

.process-step:hover {
    transform: translateY(-4px);
}

/* ===== Testimonial Cards ===== */
.testimonial-card {
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.testimonial-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.08);
}

/* ===== Scroll Reveal Animations ===== */
.reveal {
    opacity: 1;
    transform: translateY(0);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.hidden-reveal {
    opacity: 0;
    transform: translateY(30px);
}

/* Reduced motion */
@media (prefers-reduced-motion: no-preference) {
    .reveal {
        opacity: 0;
        transform: translateY(30px);
    }
    
    .reveal.visible {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ===== Form Styles ===== */
input:focus,
textarea:focus {
    box-shadow: 0 0 0 3px rgba(255, 127, 80, 0.15);
}

/* ===== Custom scrollbar ===== */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: #f6f6f7;
}

::-webkit-scrollbar-thumb {
    background: #c4c5ca;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: #a1a3aa;
}

/* ===== Selection ===== */
::selection {
    background: rgba(255, 127, 80, 0.2);
    color: #2a2c31;
}

/* ===== Responsive adjustments ===== */
@media (max-width: 768px) {
    .font-serif {
        font-size: clamp(1.75rem, 5vw, 2.5rem);
    }
    
    #hero h1 {
        font-size: clamp(2rem, 6vw, 3rem);
    }
}