/* VietInbox Custom Styles */

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

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

::-webkit-scrollbar-track {
    background: #f1f1f1;
}

::-webkit-scrollbar-thumb {
    background: #1E40AF;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: #1D4ED8;
}

/* Form focus states */
input:focus,
textarea:focus,
select:focus {
    outline: none;
    box-shadow: 0 0 0 3px rgba(30, 64, 175, 0.1);
}

/* Button hover effects */
.btn-primary {
    transition: all 0.3s ease;
    transform: translateY(0);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(30, 64, 175, 0.3);
}

/* Card hover effects */
.card-hover {
    transition: all 0.3s ease;
}

.card-hover:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
}

/* Mobile menu animation */
#mobile-menu {
    transition: all 0.3s ease;
    max-height: 0;
    overflow: hidden;
    opacity: 0;
    transform: translateY(-10px);
}

#mobile-menu:not(.hidden) {
    max-height: 500px;
    opacity: 1;
    transform: translateY(0);
}

/* Mobile menu button animation */
#mobile-menu-btn {
    transition: all 0.2s ease;
}

#mobile-menu-btn:hover {
    transform: scale(1.05);
}

/* Mobile menu links animation */
#mobile-menu a {
    transition: all 0.2s ease;
    transform: translateX(-10px);
    opacity: 0;
}

#mobile-menu:not(.hidden) a {
    transform: translateX(0);
    opacity: 1;
}

#mobile-menu:not(.hidden) a:nth-child(1) { transition-delay: 0.1s; }
#mobile-menu:not(.hidden) a:nth-child(2) { transition-delay: 0.2s; }
#mobile-menu:not(.hidden) a:nth-child(3) { transition-delay: 0.3s; }
#mobile-menu:not(.hidden) a:nth-child(4) { transition-delay: 0.4s; }

/* Loading animation for form submission */
.loading {
    position: relative;
    pointer-events: none;
}

.loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 20px;
    height: 20px;
    margin: -10px 0 0 -10px;
    border: 2px solid #ffffff;
    border-top: 2px solid transparent;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Success/Error message styles */
.message {
    padding: 12px 16px;
    border-radius: 8px;
    margin: 16px 0;
    font-weight: 500;
}

.message.success {
    background-color: #D1FAE5;
    color: #065F46;
    border: 1px solid #A7F3D0;
}

.message.error {
    background-color: #FEE2E2;
    color: #991B1B;
    border: 1px solid #FECACA;
}

/* Pricing card highlight */
.pricing-card.featured {
    position: relative;
    transform: scale(1.05);
    z-index: 10;
}

.pricing-card.featured::before {
    content: '';
    position: absolute;
    top: -2px;
    left: -2px;
    right: -2px;
    bottom: -2px;
    background: linear-gradient(45deg, #1E40AF, #3B82F6, #60A5FA);
    border-radius: 12px;
    z-index: -1;
}

/* Feature icon animations */
.feature-icon {
    transition: all 0.3s ease;
}

.feature-icon:hover {
    transform: scale(1.1) rotate(5deg);
}

/* Testimonial card styles */
.testimonial-card {
    background: linear-gradient(135deg, #f8fafc 0%, #f1f5f9 100%);
    border-left: 4px solid #1E40AF;
}

/* Contact form validation styles */
.form-field.error input,
.form-field.error textarea,
.form-field.error select {
    border-color: #EF4444;
    box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.1);
}

.form-field.error .error-message {
    color: #EF4444;
    font-size: 14px;
    margin-top: 4px;
}

/* Responsive typography */
@media (max-width: 768px) {
    .hero-title {
        font-size: 2.5rem;
        line-height: 1.2;
    }
    
    .hero-subtitle {
        font-size: 1.125rem;
    }
}

/* Print styles */
@media print {
    .no-print {
        display: none !important;
    }
    
    body {
        font-size: 12pt;
        line-height: 1.4;
    }
    
    .container {
        max-width: none;
        margin: 0;
        padding: 0;
    }
}

/* Accessibility improvements */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* Focus visible for keyboard navigation */
*:focus-visible {
    outline: 2px solid #1E40AF;
    outline-offset: 2px;
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    .text-gray-600 {
        color: #000000;
    }
    
    .text-gray-700 {
        color: #000000;
    }
}

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    
    html {
        scroll-behavior: auto;
    }
}

/* Dark mode support (if needed in future) */
@media (prefers-color-scheme: dark) {
    /* Dark mode styles can be added here if needed */
}

/* Custom utility classes */
.text-gradient {
    background: linear-gradient(135deg, #1E40AF, #3B82F6);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.bg-gradient-primary {
    background: linear-gradient(135deg, #1E40AF, #3B82F6);
}

.shadow-primary {
    box-shadow: 0 4px 14px 0 rgba(30, 64, 175, 0.2);
}

.border-primary {
    border-color: #1E40AF;
}

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

@keyframes fadeInLeft {
    from {
        opacity: 0;
        transform: translateX(-30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes fadeInRight {
    from {
        opacity: 0;
        transform: translateX(30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* Animation classes */
.animate-fadeInUp {
    animation: fadeInUp 0.6s ease-out;
}

.animate-fadeInLeft {
    animation: fadeInLeft 0.6s ease-out;
}

.animate-fadeInRight {
    animation: fadeInRight 0.6s ease-out;
}

/* Stagger animation delays */
.animate-delay-100 {
    animation-delay: 0.1s;
}

.animate-delay-200 {
    animation-delay: 0.2s;
}

.animate-delay-300 {
    animation-delay: 0.3s;
}

.animate-delay-400 {
    animation-delay: 0.4s;
}

.animate-delay-500 {
    animation-delay: 0.5s;
}