/* CSS Variables for theming */
:root {
    /* Light theme variables */
    --bg-primary: #f0f2f5;
    --bg-secondary: #ffffff;
    --bg-tertiary: #f8f9fa;
    --bg-chat: #e5ddd5;
    --bg-chat-gradient: linear-gradient(to bottom right, #e5ddd5, #f5f0ec);
    --text-primary: #333333;
    --text-secondary: #666666;
    --border-color: #e0e0e0;
    --shadow-color: rgba(0, 0, 0, 0.15);
    --shadow-light: rgba(0, 0, 0, 0.05);
    --user-msg-bg: #007AFF;
    --user-msg-text: #ffffff;
    --bot-msg-bg: #ffffff;
    --bot-msg-text: #333333;
    --loading-bg: #f0f0f0;
    --loading-text: #888888;
    --context-info-bg: #e3f2fd;
    --context-info-border: #2196f3;
    --context-info-text: #1976d2;
}

[data-theme="dark"] {
    /* Dark theme variables */
    --bg-primary: #1a1a1a;
    --bg-secondary: #2d2d2d;
    --bg-tertiary: #3a3a3a;
    --bg-chat: #404040;
    --bg-chat-gradient: linear-gradient(to bottom right, #404040, #4a4a4a);
    --text-primary: #ffffff;
    --text-secondary: #cccccc;
    --border-color: #555555;
    --shadow-color: rgba(0, 0, 0, 0.3);
    --shadow-light: rgba(0, 0, 0, 0.1);
    --user-msg-bg: #007AFF;
    --user-msg-text: #ffffff;
    --bot-msg-bg: #4a4a4a;
    --bot-msg-text: #ffffff;
    --loading-bg: #555555;
    --loading-text: #cccccc;
    --context-info-bg: #1e3a5f;
    --context-info-border: #4a9eff;
    --context-info-text: #87ceeb;
}

/* Basic Reset & Body Styling */
body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', 'Fira Sans', 'Droid Sans', 'Helvetica Neue', sans-serif;
    background-color: var(--bg-primary);
    display: flex; /* Use flexbox to center content */
    justify-content: center; /* Center horizontally */
    align-items: center; /* Center vertically */
    min-height: 100vh; /* Make body at least viewport height */
    transition: background-color 0.3s ease;
}

/* Header styling */
.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px;
    border-bottom: 1px solid var(--border-color);
    background-color: var(--bg-secondary);
    position: relative;
    z-index: 10;
}

.header-left {
    display: flex;
    align-items: center;
    gap: 30px;
}

.header-right {
    display: flex;
    align-items: center;
    gap: 10px;
}

/* Timer styling */
.timer-container {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 10px 15px;
    background-color: var(--bg-tertiary);
    border-radius: 8px;
    border: 1px solid var(--border-color);
}

.timer {
    font-family: 'Courier New', monospace;
    font-size: 1.2em;
    font-weight: bold;
    color: var(--text-primary);
    min-width: 60px;
    text-align: center;
    cursor: pointer;
    padding: 2px 4px;
    border-radius: 4px;
    transition: background-color 0.2s ease, border 0.2s ease;
    outline: none;
    border: 1px solid transparent;
}

.timer:hover {
    background-color: var(--bg-secondary);
    border-color: var(--border-color);
}

.timer:focus {
    background-color: var(--bg-secondary);
    border-color: #007bff;
    box-shadow: 0 0 0 2px rgba(0, 123, 255, 0.25);
}

.timer[contenteditable="true"]:empty::before {
    content: "25:00";
    color: var(--text-secondary);
}

.timer-controls {
    display: flex;
    gap: 8px;
}

.timer-btn {
    padding: 6px 12px;
    background-color: var(--bg-secondary);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    cursor: pointer;
    font-size: 0.8em;
    font-weight: 500;
    transition: all 0.2s ease;
    text-transform: lowercase;
}

.timer-btn:hover {
    background-color: var(--bg-tertiary);
    border-color: var(--text-primary);
}

.timer-btn:active {
    transform: scale(0.95);
}

.timer-btn.running {
    background-color: #dc3545;
    color: white;
    border-color: #dc3545;
}

.timer-btn.running:hover {
    background-color: #c82333;
    border-color: #c82333;
}

/* Theme toggle button */
.theme-toggle {
    background: none;
    border: 2px solid var(--border-color);
    border-radius: 50%;
    width: 40px;
    height: 40px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    background-color: var(--bg-secondary);
}

.theme-toggle:hover {
    border-color: var(--text-primary);
    transform: scale(1.1);
}

.theme-icon {
    font-size: 1.2em;
    transition: transform 0.3s ease;
}

[data-theme="dark"] .theme-icon {
    transform: rotate(180deg);
}

/* Container for the main application */
.container {
    background-color: var(--bg-secondary);
    border-radius: 8px;
    box-shadow: 0 8px 20px var(--shadow-color);
    width: 100%;
    max-width: 900px; /* Increased max width for two columns */
    overflow: hidden; /* Ensures content stays within rounded corners */
    display: flex; /* Use flexbox for inner layout */
    flex-direction: column; /* Stack children vertically */
    height: 80vh; /* Make the container take up 80% of viewport height */
    transition: background-color 0.3s ease, box-shadow 0.3s ease;
}

h1 {
    text-align: center;
    color: var(--text-primary);
    padding: 0;
    margin: 0; /* Remove default margin */
    font-size: 1.8em;
    transition: color 0.3s ease;
}

/* Main content area with two columns */
.main-content {
    display: flex;
    flex: 1;
    overflow: hidden;
    position: relative;
    z-index: 2;
}

/* Chat section (left side) */
.chat-section {
    flex: 2; /* Takes up 2/3 of the space */
    display: flex;
    flex-direction: column;
    border-right: 1px solid var(--border-color);
    position: relative;
    z-index: 2;
}

/* Context section (right side) */
.context-section {
    flex: 1; /* Takes up 1/3 of the space */
    display: flex;
    flex-direction: column;
    padding: 20px;
    background-color: var(--bg-tertiary);
    transition: background-color 0.3s ease;
    position: relative;
    z-index: 2;
}

.context-section h3 {
    margin: 0 0 15px 0;
    color: var(--text-primary);
    font-size: 1.2em;
    font-weight: 600;
    transition: color 0.3s ease;
}

#contextInput {
    flex: 1;
    padding: 15px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-family: inherit;
    font-size: 0.9em;
    line-height: 1.4;
    resize: none;
    outline: none;
    transition: border-color 0.2s ease, box-shadow 0.2s ease, background-color 0.3s ease, color 0.3s ease;
    background-color: var(--bg-secondary);
    color: var(--text-primary);
}

#contextInput:focus {
    border-color: #007bff;
    box-shadow: 0 0 0 3px rgba(0, 123, 255, 0.25);
}

.context-info {
    margin-top: 15px;
    padding: 10px;
    background-color: var(--context-info-bg);
    border-radius: 6px;
    border-left: 4px solid var(--context-info-border);
    transition: background-color 0.3s ease, border-color 0.3s ease;
}

.context-info p {
    margin: 0;
    font-size: 0.85em;
    color: var(--context-info-text);
    line-height: 1.4;
    transition: color 0.3s ease;
}

/* Chat box where hints will appear */
.chat-box {
    flex: 1; /* Take up remaining space */
    padding: 20px;
    overflow-y: auto; /* Enable scrolling if content overflows */
    background: var(--bg-chat-gradient);
    display: flex;
    flex-direction: column; /* Stack messages */
    min-height: 300px; /* Ensure minimum height for scrolling */
    max-height: 60vh; /* Limit maximum height */
    scroll-behavior: smooth; /* Smooth scrolling animation */
    border-bottom-left-radius: 8px; /* Match container border radius */
    border-bottom-right-radius: 8px; /* Match container border radius */
    transition: background 0.3s ease;
}

/* Input area at the bottom */
.input-area {
    display: flex; /* Use flexbox to align input and button */
    padding: 15px 20px;
    border-top: 1px solid var(--border-color);
    background-color: var(--bg-tertiary);
    gap: 10px; /* Space between input and button */
    box-shadow: 0 -2px 5px var(--shadow-light);
    transition: background-color 0.3s ease, border-color 0.3s ease;
}

/* New problem area */
.new-problem-area {
    display: flex;
    justify-content: center;
    gap: 15px; /* Space between buttons */
    padding: 15px 20px;
    border-top: 1px solid var(--border-color);
    background-color: var(--bg-tertiary);
    box-shadow: 0 -2px 5px var(--shadow-light);
    transition: background-color 0.3s ease, border-color 0.3s ease;
}

#problemInput {
    flex-grow: 1; /* Allow input to take most of the space */
    padding: 10px 15px;
    border: 1px solid var(--border-color);
    border-radius: 20px; /* Rounded input field */
    font-size: 1em;
    outline: none; /* Remove blue outline on focus */
    transition: border-color 0.2s ease, box-shadow 0.2s ease, background-color 0.3s ease, color 0.3s ease;
    background-color: var(--bg-secondary);
    color: var(--text-primary);
}

#problemInput:focus {
    border-color: #007bff; /* Highlight border on focus */
    box-shadow: 0 0 0 3px rgba(0, 123, 255, 0.25); /* Subtle glow on focus */
}

#getHintBtn {
    padding: 10px 20px;
    background-color: #007bff; /* Blue button */
    color: white;
    border: none;
    border-radius: 20px; /* Rounded button */
    cursor: pointer; /* Change cursor to pointer on hover */
    font-size: 1em;
    transition: background-color 0.2s ease, transform 0.1s ease; /* Add transform for click effect */
}

#getHintBtn:hover {
    background-color: #0056b3; /* Darker blue on hover */
}

#getHintBtn:active {
    background-color: #004085; /* Even darker on click */
    transform: scale(0.98); /* Slightly shrink on click */
}

#anotherHintBtn {
    padding: 12px 24px;
    background-color: #28a745; /* Green button for another hint */
    color: white;
    border: none;
    border-radius: 20px;
    cursor: pointer;
    font-size: 1em;
    font-weight: 500;
    transition: background-color 0.2s ease, transform 0.1s ease;
}

#anotherHintBtn:hover {
    background-color: #218838; /* Darker green on hover */
}

#anotherHintBtn:active {
    background-color: #1e7e34; /* Even darker on click */
    transform: scale(0.98);
}

#newProblemBtn {
    padding: 12px 24px;
    background-color: var(--bg-secondary); /* White button for new problem */
    color: var(--text-primary); /* Dark text for contrast */
    border: 2px solid var(--border-color); /* Light border */
    border-radius: 20px;
    cursor: pointer;
    font-size: 1em;
    font-weight: 500;
    transition: background-color 0.2s ease, transform 0.1s ease, border-color 0.2s ease;
}

#newProblemBtn:hover {
    background-color: var(--bg-tertiary); /* Light gray on hover */
    border-color: #007bff; /* Blue border on hover */
}

#newProblemBtn:active {
    background-color: var(--border-color); /* Slightly darker on click */
    transform: scale(0.98);
}

/* Individual chat message styling */
.chat-message {
    padding: 10px 15px;
    border-radius: 18px;
    margin-bottom: 10px;
    max-width: 75%;
    word-wrap: break-word; /* Ensure long words don't overflow */
    line-height: 1.4;
    flex-shrink: 0; /* Prevent messages from shrinking */
    opacity: 0; /* Start invisible */
    transform: translateY(20px); /* Start slightly below */
    animation: fadeInSlideUp 0.3s ease-out forwards; /* Apply animation */
    transition: background-color 0.3s ease, color 0.3s ease;
}

/* Define the keyframe animation */
@keyframes fadeInSlideUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Optional: Add a subtle separator for readability between messages */
.chat-message + .chat-message { /* Selects a chat-message that immediately follows another chat-message */
    margin-top: 10px; /* Adjust spacing between consecutive messages */
}

/* Style for messages sent by the user */
.chat-message.user {
    background-color: var(--user-msg-bg);
    color: var(--user-msg-text);
    align-self: flex-end; /* Align user messages to the right */
}

/* Style for messages received from the bot */
.chat-message.bot {
    background-color: var(--bot-msg-bg);
    color: var(--bot-msg-text);
    align-self: flex-start; /* Align bot messages to the left */
}

/* Styling for the loading message */
.chat-message.loading {
    background-color: var(--loading-bg);
    color: var(--loading-text);
    font-style: italic;
    align-self: flex-start; /* Loading message appears on bot's side */
    margin-right: auto;
    animation: pulse 1.5s infinite; /* Add a subtle pulsing animation */
    transform: translateY(0); /* Ensure loading message starts at correct position */
}

/* Keyframe animation for pulsing effect */
@keyframes pulse {
    0% { opacity: 0.7; }
    50% { opacity: 1; }
    100% { opacity: 0.7; }
}

/* Basic responsiveness for smaller screens */
@media (max-width: 768px) {
    .container {
        height: 100vh;
        max-height: 100vh;
        border-radius: 0;
        max-width: 100%;
    }
    
    .main-content {
        flex-direction: column;
    }
    
    .chat-section {
        flex: 1;
        border-right: none;
        border-bottom: 1px solid var(--border-color);
    }
    
    .context-section {
        flex: none;
        height: 200px;
        padding: 15px;
    }
    
    #contextInput {
        height: 120px;
    }
}

/* Particles canvas */
.particles-canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 0;
    opacity: 0;
    transition: opacity 0.5s ease;
}

.particles-canvas.active {
    opacity: 1;
}

/* Particles toggle button */
.particles-toggle {
    background: none;
    border: 2px solid var(--border-color);
    border-radius: 50%;
    width: 40px;
    height: 40px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    background-color: var(--bg-secondary);
}

.particles-toggle:hover {
    border-color: var(--text-primary);
    transform: scale(1.1);
}

.particles-toggle.active {
    background-color: #007bff;
    border-color: #007bff;
    color: white;
}

.particles-icon {
    font-size: 1.2em;
    transition: transform 0.3s ease;
}

.particles-toggle.active .particles-icon {
    transform: rotate(360deg);
}

/* Built by credit */
.built-by {
    font-size: 0.9em;
    color: var(--text-secondary);
    margin-right: 15px;
    font-weight: 500;
}

.built-by a {
    color: var(--text-primary);
    text-decoration: none;
    font-weight: 600;
    transition: color 0.3s ease;
}

.built-by a:hover {
    color: #007bff;
    text-decoration: underline;
}

.instagram-icon {
    display: inline-block;
    vertical-align: middle;
    margin-right: 4px;
    height: 1em;
    width: 1em;
    stroke: var(--text-primary);
    transition: stroke 0.3s, fill 0.3s;
}

.built-by a:hover .instagram-icon {
    stroke: #e1306c;
    fill: #e1306c22;
}

/* Codedex Badge */
.codedex-badge {
    position: fixed;
    bottom: 10px;
    right: 10px;
    z-index: 100000; /* Increased z-index to be above everything */
    user-select: none;
    padding: 10px 16px;
    background: rgba(2, 6, 23, 0.8) !important; /* Made more opaque for debugging */
    border-radius: 30px;
    display: flex !important; /* Force display */
    -webkit-box-pack: center;
    justify-content: center;
    -webkit-box-align: center;
    align-items: center;
    gap: 0.5rem;
    text-decoration: none;
    transition: background 0.3s ease;
}

.codedex-badge:hover, .codedex-badge:active, .codedex-badge:focus {
    background: rgba(30, 41, 59, 0.9) !important;
    cursor: url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAACAAAAAgCAYAAABzenr0AAAAzElEQVRYR+2X0Q6AIAhF5f8/2jYXZkwEjNSVvVUjDpcrGgT7FUkI2D9xRfQETwNIiWO85wfINfQUEyxBG2ArsLwC0jioGt5zFcwF4OYDPi/mBYKm4t0U8ATgRm3ThFoAqkhNgWkA0jJLvaOVSs7j3qMnSgXWBMiWPXe94QqMBMBc1VZIvaTu5u5pQewq0EqNZvIEMCmxAawK0DNkay9QmfFNAJUXfgGgUkLaE7j/h8fnASkxHTz0DGIBMCnBeeM7AArpUd3mz2x3C7wADglA8BcWMZhZAAAAAElFTkSuQmCC) 14 0, pointer;
}

.codedex-img {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: #fff;
    object-fit: cover;
    display: block; /* Ensure image displays */
}

.codedex-badge .built-on-text {
    font-family: 'Mulish', sans-serif;
    font-size: 14px;
    font-weight: 400;
    color: #fff !important; /* Force white color */
    display: inline-block;
}

.codedex-badge .codedex-label {
    font-family: 'Press Start 2P', cursive;
    font-size: 14px;
    font-weight: 700;
    letter-spacing: 0.5px;
    color: #fff !important; /* Force white color */
    display: inline-block;
}