/* Custom styles for B.T. Gerold Structural Engineering */

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

/* Custom scrollbar */
::-webkit-scrollbar {
    width: 8px;
}
::-webkit-scrollbar-track {
    background: #FAFAF5;
}
::-webkit-scrollbar-thumb {
    background: #145a2d;
    border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
    background: #1a7a3e;
}

/* Selection color */
::selection {
    background: #2bb55e;
    color: white;
}

/* Navbar scroll effect */
.navbar-scrolled {
    background: rgba(250, 250, 245, 0.95) !important;
    backdrop-filter: blur(12px);
    box-shadow: 0 1px 20px rgba(0, 0, 0, 0.08);
}

/* Service card hover */
.service-card {
    transition: transform 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94),
                box-shadow 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94),
                border-color 0.4s ease;
}

/* Hero text animation */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.hero-content > * {
    animation: fadeInUp 0.8s ease forwards;
    opacity: 0;
}

.hero-content > *:nth-child(1) { animation-delay: 0.1s; }
.hero-content > *:nth-child(2) { animation-delay: 0.25s; }
.hero-content > *:nth-child(3) { animation-delay: 0.4s; }
.hero-content > *:nth-child(4) { animation-delay: 0.55s; }

/* Mobile menu */
#mobile-menu {
    animation: slideDown 0.3s ease forwards;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Intersection observer animations */
.reveal {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.7s ease, transform 0.7s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}

.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.4s; }

/* Floating animation for decorative elements */
@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-10px); }
}

.float-anim {
    animation: float 4s ease-in-out infinite;
}

/* Pulse dot */
@keyframes pulse-dot {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.5; transform: scale(1.5); }
}

.animate-pulse-dot {
    animation: pulse-dot 2s ease-in-out infinite;
}

/* Form focus states */
input:focus,
select:focus,
textarea:focus {
    box-shadow: 0 0 0 3px rgba(43, 181, 94, 0.15);
}

/* Button ripple effect */
button, a {
    -webkit-tap-highlight-color: transparent;
}