/* ========== CUSTOM STYLES ========== */

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

/* Navbar scroll state */
#navbar.scrolled {
    background: rgba(255, 255, 255, 0.97);
    backdrop-filter: blur(12px);
    box-shadow: 0 1px 20px rgba(11, 29, 58, 0.08);
}

/* Nav link underline on scroll */
.nav-link {
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background: #4ade80;
    border-radius: 1px;
    transition: all 0.2s ease;
    transform: translateX(-50%);
}

.nav-link:hover::after {
    width: 60%;
}

/* Mobile menu */
.mobile-menu-inner {
    max-height: 0;
    opacity: 0;
    transition: max-height 0.35s ease, opacity 0.25s ease;
}

.mobile-menu-inner.open {
    max-height: 400px;
    opacity: 1;
}

.mobile-link {
    transition: background-color 0.2s ease;
}

/* 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);
}

/* Default state for reveal elements — visible for no-JS */
.reveal {
    transform: translateY(0);
}

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

/* Custom focus styles */
a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible {
    outline: 2px solid #4ade80;
    outline-offset: 2px;
    border-radius: 4px;
}

/* Selection color */
::selection {
    background: #bbf7d0;
    color: #0B1D3A;
}

/* Subtle hover lift for cards */
.group:hover {
    transform: translateY(-2px);
}

.group {
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

/* Image loading placeholder */
img {
    background: linear-gradient(135deg, #f0f3f9 0%, #dcfce7 100%);
}

/* Form input autofill */
input:-webkit-autofill,
textarea:-webkit-autofill {
    -webkit-box-shadow: 0 0 0 30px white inset !important;
}