/* Custom styles for Grimm and Chen Structural Engineering */

/* Smooth scroll offset for fixed nav */
html {
    scroll-padding-top: 80px;
}

/* Navbar transitions */
.nav-link {
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 1px;
    background: #b65135;
    transition: width 0.3s ease;
}

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

/* Navbar background transition */
.nav-scrolled {
    background: rgba(252, 250, 248, 0.95) !important;
    backdrop-filter: blur(12px);
    box-shadow: 0 1px 0 rgba(0, 0, 0, 0.05);
}

.nav-scrolled .nav-text {
    color: #1c1917 !important;
}

.nav-scrolled .nav-subtext {
    color: #78716c !important;
}

/* Hero animations */
.hero-title {
    opacity: 0;
    transform: translateY(30px);
    animation: heroReveal 0.8s ease forwards 0.2s;
}

.hero-subtitle {
    opacity: 0;
    transform: translateY(20px);
    animation: heroReveal 0.8s ease forwards 0.4s;
}

.hero-desc {
    opacity: 0;
    transform: translateY(20px);
    animation: heroReveal 0.8s ease forwards 0.6s;
}

@keyframes heroReveal {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

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

@media (prefers-reduced-motion: no-preference) {
    .reveal {
        opacity: 0;
        transform: translateY(24px);
    }
    
    .reveal.revealed {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Service card hover effects */
.service-card {
    transition: background-color 0.5s ease, transform 0.3s ease, box-shadow 0.3s ease;
}

.service-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.06);
}

/* Mobile menu */
.mobile-link {
    opacity: 0;
    transform: translateY(10px);
    transition: opacity 0.3s ease, transform 0.3s ease;
}

.mobile-menu-open .mobile-link {
    opacity: 1;
    transform: translateY(0);
}

.mobile-menu-open .mobile-link:nth-child(1) { transition-delay: 0.05s; }
.mobile-menu-open .mobile-link:nth-child(2) { transition-delay: 0.1s; }
.mobile-menu-open .mobile-link:nth-child(3) { transition-delay: 0.15s; }
.mobile-menu-open .mobile-link:nth-child(4) { transition-delay: 0.2s; }
.mobile-menu-open .mobile-link:nth-child(5) { transition-delay: 0.25s; }

/* Hamburger animation */
#menu-icon.active #bar1 {
    transform: translateY(4px) rotate(45deg);
}

#menu-icon.active #bar2 {
    opacity: 0;
}

#menu-icon.active #bar3 {
    transform: translateY(-4px) rotate(-45deg);
    width: 1.5rem;
}

/* Custom select styling */
select {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%2378716c' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 1rem center;
    -webkit-appearance: none;
    -moz-appearance: none;
    appearance: none;
}

/* Subtle image hover zoom */
.overflow-hidden img {
    transition: transform 0.6s ease;
}

.overflow-hidden:hover img {
    transform: scale(1.02);
}

/* Selection color */
::selection {
    background: #c46843;
    color: #fcfaf8;
}