/* Custom CSS for SK Robotics Website */

/* Ensure smooth scrolling for anchor links (still useful for internal page anchors like on homepage) */
html {
    scroll-behavior: smooth;
}

/* Base styles for page sections */
.page-section {
    min-height: calc(100vh - 80px); /* Adjust for header height */
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding-top: 80px; /* Offset for fixed header */
    padding-bottom: 80px;
}

/* Active navigation link styling */
.nav-link.active {
    color: #4F46E5; /* Indigo-600 */
    border-bottom: 2px solid #4F46E5;
    font-weight: 600; /* Semi-bold */
}

/* Adjustments for the Hero Section to ensure full viewport height minus header */
#hero-section {
    min-height: calc(100vh - 80px); /* 80px is an approximation of header height */
    padding-top: 0; /* No extra padding for hero section */
    padding-bottom: 0; /* No extra padding for hero section */
    background-size: cover;
    background-position: center;
    /* This transition property will make the background image change smoothly */
    transition: background-image 1s ease-in-out;
}

/* Specific styling for the map iframe to be fully responsive within its container */
#contact-page iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

/* --- Global Fade-in-Up Animation for elements on scroll --- */
.animate-fade-in-up {
    animation: fadeInUp 0.8s ease-out forwards;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Initial state for elements before they scroll into view */
.animate-on-scroll {
    opacity: 0;
    transform: translateY(20px);
}

/* Staggered animation delay for elements (optional, can be overridden by JS) */
.animate-on-scroll:nth-child(1) { animation-delay: 0s; }
.animate-on-scroll:nth-child(2) { animation-delay: 0.1s; }
.animate-on-scroll:nth-child(3) { animation-delay: 0.2s; }
.animate-on-scroll:nth-child(4) { animation-delay: 0.3s; }
/* Add more if you have many elements for finer control */


/* --- Chatbot Specific Styles --- */
#chatbot-modal {
    transition: opacity 0.3s ease-in-out, visibility 0.3s ease-in-out;
}

#chatbot-modal.hidden {
    opacity: 0;
    visibility: hidden;
}

#chatbot-toggle-btn {
    transition: transform 0.3s ease-in-out, background-color 0.3s ease-in-out;
}

#chatbot-toggle-btn:hover {
    transform: scale(1.1);
}

/* Chatbot typing indicator animation */
.typing-indicator span {
    animation: blink 1s infinite;
}

.typing-indicator span:nth-child(2) {
    animation-delay: 0.2s;
}

.typing-indicator span:nth-child(3) {
    animation-delay: 0.4s;
}

@keyframes blink {
    0%, 100% { opacity: 0.2; }
    50% { opacity: 1; }
}

/* Animation for chatbot modal appearance */
.animate-scale-in {
    animation: scaleIn 0.3s ease-out forwards;
}

.animate-scale-out {
    animation: scaleOut 0.3s ease-in forwards;
}

@keyframes scaleIn {
    from { transform: scale(0.9); opacity: 0; }
    to { transform: scale(1); opacity: 1; }
}

@keyframes scaleOut {
    from { transform: scale(1); opacity: 1; }
    to { transform: scale(0.9); opacity: 0; }
}

/* Prose classes for Markdown rendering within chatbot/LLM outputs */
.prose {
    color: inherit; /* Ensure text color from parent is inherited */
    font-size: 0.875rem; /* text-sm */
    line-height: 1.5;
}

.prose h1, .prose h2, .prose h3, .prose h4, .prose h5, .prose h6 {
    font-weight: 600; /* semi-bold */
    margin-top: 1em;
    margin-bottom: 0.5em;
    color: #4338ca; /* indigo-700 darker shade */
}

.prose ul, .prose ol {
    list-style-position: inside;
    margin-left: 1rem;
    padding-left: 0;
}

.prose li {
    margin-bottom: 0.5em;
}

.prose p {
    margin-bottom: 1em;
}

.prose strong {
    font-weight: 700; /* bold */
}

/* --- New Grid Item Animations (Why Choose Us Section) --- */
.why-choose-us-item {
    position: relative;
    overflow: hidden; /* Ensures glowing border effect stays within bounds */
}

.why-choose-us-item:hover {
    /* Slightly more pronounced scale already handled by tailwind transform-scale-105 */
    /* Box shadow for a lift effect */
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05), inset 0 0 0 2px #6366F1; /* Inner glowing border */
}

/* Icon pulse animation for grid items */
.animate-icon-pulse {
    animation: pulseIcon 2s infinite ease-in-out;
}

@keyframes pulseIcon {
    0% { transform: scale(1); color: inherit; }
    50% { transform: scale(1.1); color: #4F46E5; } /* Slightly larger and indigo color */
    100% { transform: scale(1); color: inherit; }
}

/* --- New Project Grid Item Styles (Our Projects in Action Section) --- */
.project-grid-item img {
    /* Ensures image scaling transition */
    transition: transform 0.3s ease-in-out;
}

.project-grid-item .absolute {
    /* Ensures overlay opacity transition */
    transition: opacity 0.3s ease-in-out;
}

.project-grid-item .fa-play-circle {
    /* Ensures play icon scaling transition */
    transition: transform 0.3s ease-in-out, opacity 0.3s ease-in-out;
}

/* Play icon default state (hidden) */
.project-grid-item .fa-play-circle {
    opacity: 0;
}

/* Play icon on group hover */
.project-grid-item:hover .fa-play-circle {
    opacity: 1;
    transform: scale(1.1); /* Slightly enlarge on hover */
}