/* Custom Styles for Pho Nghia */

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

/* Custom scrollbar */
::-webkit-scrollbar {
    width: 10px;
}

::-webkit-scrollbar-track {
    background: #0f172a;
}

::-webkit-scrollbar-thumb {
    background: #1e293b;
    border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
    background: #0d9488;
}

/* Selection color */
::selection {
    background-color: #14b8a6;
    color: #0f172a;
}

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

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

/* Animation classes */
.animate-fade-in-up {
    animation: fadeInUp 0.8s ease-out forwards;
}

.animate-fade-in {
    animation: fadeIn 1s ease-out forwards;
}

/* Staggered animation delays */
.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; }

/* Initial state for animated elements */
.animate-on-scroll {
    opacity: 0;
}

/* Glass morphism effect */
.glass {
    background: rgba(15, 23, 42, 0.8);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

/* Gradient text utility */
.gradient-text {
    background: linear-gradient(135deg, #2dd4bf 0%, #0d9488 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Hover lift effect */
.hover-lift {
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.hover-lift:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

/* Image hover zoom */
.img-zoom {
    overflow: hidden;
}

.img-zoom img {
    transition: transform 0.5s ease;
}

.img-zoom:hover img {
    transform: scale(1.05);
}

/* Button shine effect */
.btn-shine {
    position: relative;
    overflow: hidden;
}

.btn-shine::after {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(
        to bottom right,
        rgba(255, 255, 255, 0) 0%,
        rgba(255, 255, 255, 0) 50%,
        rgba(255, 255, 255, 0.1) 50%,
        rgba(255, 255, 255, 0.1) 100%
    );
    transform: rotate(45deg);
    transition: transform 0.6s ease;
}

.btn-shine:hover::after {
    transform: rotate(45deg) translate(50%, 50%);
}

/* Focus styles for accessibility */
button:focus-visible,
a:focus-visible,
input:focus-visible,
textarea:focus-visible {
    outline: 2px solid #14b8a6;
    outline-offset: 2px;
}

/* Mobile menu transition */
#mobile-menu {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease-out;
}

#mobile-menu.open {
    max-height: 400px;
}

/* Navbar scroll state */
.navbar-scrolled {
    background: rgba(2, 6, 23, 0.95) !important;
    backdrop-filter: blur(20px);
}

/* Loading state for form */
.form-loading {
    opacity: 0.7;
    pointer-events: none;
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .hero-title {
        font-size: 2.5rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
}