/* style.css - Enhanced for Large Screens */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

:root {
    --primary-color: #006400; /* Dark green */
    --secondary-color: #32CD32; /* Lime green */
    --accent-color: #ffeb3b; /* Yellow accent */
    --background-color: #f5f7fa;
    --message-user-bg: #006400; /* Dark green */
    --message-bot-bg: #f0f2f5;
    --text-dark: #333;
    --text-light: #666;
    --shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    --navbar-green: rgba(0, 77, 0, 0.788);
    --footer-green: rgba(0, 30, 0, 0.9);
}

body {
    background-color: var(--background-color);
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    padding: 0;
}

/* Navbar Styles */
.navbar {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 70px;
    width: 100%;
    position: sticky;
    top: 0;
    background: rgba(0, 77, 0, 0.788);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(10px);
    z-index: 999;
    transition: all 0.3s ease;
}

.navbar-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    padding: 0 2rem;
    max-width: 1600px;
    position: relative;
}

.navbar-logo {
    font-size: 1.8rem;
    font-weight: 700;
    color: rgb(255, 231, 97);
    text-decoration: none;
    cursor: pointer;
    text-shadow: 0 0 10px rgba(255, 215, 0, 0.5);
    z-index: 1001;
}

.navbar-menu {
    display: flex;
    text-align: center;
    gap: 1.5rem;
    list-style: none;
}

.navbar-menu li a {
    text-decoration: none;
    color: #fff;
    font-size: 1.1rem;
    font-weight: 500;
    padding: 8px 20px;
    border-radius: 25px;
    border: 2px solid transparent;
    transition: all 0.4s ease;
    white-space: nowrap;
}

.navbar-menu li a:hover,
.navbar-menu li a.active { 
    color: #162530;
    background: rgba(255, 217, 0, 0.8);
    border: 2px solid #ffd700;
    box-shadow: 0 0 15px rgba(255, 215, 0, 0.5);
}

/* Navbar Toggle */
.navbar-toggle {
    display: none;
    background: transparent;
    border: none;
    cursor: pointer;
    flex-direction: column;
    justify-content: center;
    width: 30px;
    height: 30px;
    z-index: 1001;
    padding: 0;
}

.bar {
    display: block;
    width: 25px;
    height: 3px;
    margin: 3px 0;
    background: rgb(255, 231, 97);
    transition: all 0.3s ease-in-out;
    border-radius: 2px;
}

/* Responsive Navbar */
@media (max-width: 880px) {
    .navbar-toggle {
        display: flex;
    }

    .navbar-menu {
        flex-direction: column;
        align-items: center;
        justify-content: center;
        gap: 2rem;
        position: fixed;
        height: 100vh;
        width: 100%;
        top: 0;
        left: -100%;
        padding: 2rem;
        background: rgba(0, 50, 0, 0.98);
        transition: left 0.4s ease-in-out;
        z-index: 998;
    }

    .navbar-menu.active {
        left: 0;
    }

    .navbar-menu li a {
        font-size: 1.3rem;
        padding: 12px 30px;
        display: block;
        text-align: center;
        width: 100%;
    }

    .navbar-toggle.active .bar:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }
    
    .navbar-toggle.active .bar:nth-child(2) {
        opacity: 0;
    }
    
    .navbar-toggle.active .bar:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -6px);
    }
}

/* Enhanced Chat Container for Large Screens */
.chat-container {
    flex: 1;
    width: 100%;
    max-width: 1200px; /* Increased from 800px */
    height: calc(100vh - 140px);
    margin: 20px auto;
    background-color: white;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    box-shadow: var(--shadow);
    border-radius: 12px;
}

.chat-header {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: white;
    padding: 20px 30px;
    text-align: center;
    flex-shrink: 0;
}

.chat-header h2 {
    margin-bottom: 4px;
    font-size: 1.5rem;
}

.chat-header p {
    opacity: 0.9;
    font-size: 0.9rem;
}

.chat-messages {
    flex: 1;
    padding: 25px;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 15px;
    background-color: white;
}

.message {
    display: flex;
    max-width: 70%; /* Increased from 70% for better readability */
    animation: fadeIn 0.3s ease-in;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.user-message {
    align-self: flex-end;
}

.bot-message {
    align-self: flex-start;
}

.message-content {
    padding: 14px 18px;
    border-radius: 18px;
    line-height: 1.5;
    font-size: 1rem;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

.user-message .message-content {
    background-color: var(--message-user-bg);
    color: white;
    border-bottom-right-radius: 4px;
}

.bot-message .message-content {
    background-color: var(--message-bot-bg);
    color: var(--text-dark);
    border-bottom-left-radius: 4px;
}

.chat-input {
    display: flex;
    padding: 20px 25px;
    border-top: 1px solid #eee;
    background-color: white;
    flex-shrink: 0;
    gap: 12px;
}

#userInput {
    flex: 1;
    padding: 14px 18px;
    border: 1px solid #ddd;
    border-radius: 24px;
    outline: none;
    font-size: 1rem;
    background-color: #f8f9fa;
    transition: all 0.3s ease;
}

#userInput:focus {
    border-color: var(--primary-color);
    background-color: white;
    box-shadow: 0 0 0 2px rgba(106, 17, 203, 0.1);
}

#sendButton {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: white;
    border: none;
    border-radius: 24px;
    padding: 0 25px;
    cursor: pointer;
    font-weight: 600;
    font-size: 0.95rem;
    transition: all 0.2s ease;
    min-width: 80px;
}

#sendButton:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(106, 17, 203, 0.3);
}

#sendButton:active {
    transform: translateY(0);
}

#sendButton:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

/* Enhanced Scrollbar styling */
.chat-messages::-webkit-scrollbar {
    width: 8px;
}

.chat-messages::-webkit-scrollbar-track {
    background: #f1f1f1;
    border-radius: 4px;
}

.chat-messages::-webkit-scrollbar-thumb {
    background: #c1c1c1;
    border-radius: 4px;
}

.chat-messages::-webkit-scrollbar-thumb:hover {
    background: #a8a8a8;
}

/* Footer Styles */
.footer {
    background: rgba(0, 30, 0, 0.9);
    padding: 3rem 2rem 1rem;
    margin-top: auto;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-section h3 {
    color: #ffeb3b;
    margin-bottom: 1rem;
    font-size: 1.3rem;
}

.footer-section p {
    line-height: 1.6;
    margin-bottom: 1rem;
    color: #fff;
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: 0.5rem;
}

.footer-section ul li a {
    color: #fff;
    text-decoration: none;
    transition: all 0.3s ease;
}

.footer-section ul li a:hover {
    color: #ffeb3b;
    padding-left: 5px;
}

.social-icons {
    display: flex;
    gap: 1rem;
}

.social-icons a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    color: #fff;
    text-decoration: none;
    transition: all 0.3s ease;
}

.social-icons a:hover {
    background: #ffeb3b;
    color: #006400;
    transform: translateY(-3px);
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: #ccc;
    font-size: 0.9rem;
}

/* Large Desktop Optimizations */
@media (min-width: 1400px) {
    .chat-container {
        max-width: 1400px;
        height: calc(100vh - 160px);
        margin: 30px auto;
    }
    
    .chat-header {
        padding: 25px 40px;
    }
    
    .chat-header h2 {
        font-size: 1.7rem;
    }
    
    .chat-header p {
        font-size: 1rem;
    }
    
    .chat-messages {
        padding: 30px 40px;
        gap: 20px;
    }
    
    .message {
        max-width: 65%; /* More balanced width on very large screens */
    }
    
    .message-content {
        padding: 16px 22px;
        font-size: 1.05rem;
        line-height: 1.6;
    }
    
    .chat-input {
        padding: 25px 40px;
    }
    
    #userInput {
        padding: 16px 22px;
        font-size: 1.05rem;
    }
    
    #sendButton {
        padding: 0 30px;
        min-width: 100px;
        font-size: 1rem;
    }
}

/* Tablet and desktop styles */
@media (min-width: 768px) and (max-width: 1399px) {
    .chat-container {
        max-width: 900px;
        height: calc(100vh - 140px);
        margin: 20px auto;
    }
    
    .chat-header {
        padding: 20px 30px;
    }
    
    .chat-header h2 {
        font-size: 1.5rem;
    }
    
    .chat-header p {
        font-size: 0.9rem;
    }
    
    .chat-messages {
        padding: 25px 30px;
    }
    
    .message {
        max-width: 75%;
    }
    
    .message-content {
        padding: 14px 18px;
        font-size: 1rem;
    }
    
    .chat-input {
        padding: 20px 30px;
    }
    
    #sendButton {
        padding: 0 25px;
        min-width: 80px;
    }
}

/* Mobile Responsive Styles */
@media (max-width: 767px) {
    .navbar-container {
        padding: 0 1rem;
    }
    
    .navbar-logo {
        font-size: 1.5rem;
    }
    
    .chat-container {
        max-width: 100%;
        height: calc(100vh - 70px);
        margin: 0;
        border-radius: 0;
    }
    
    .chat-header {
        padding: 15px 20px;
    }
    
    .chat-header h2 {
        font-size: 1.3rem;
    }
    
    .chat-header p {
        font-size: 0.85rem;
    }
    
    .chat-messages {
        padding: 15px;
        gap: 12px;
    }
    
    .message {
        max-width: 85%;
    }
    
    .message-content {
        padding: 10px 14px;
        font-size: 0.95rem;
    }
    
    .chat-input {
        padding: 12px 15px;
        gap: 8px;
    }
    
    #userInput {
        padding: 12px 15px;
    }
    
    #sendButton {
        padding: 0 20px;
        min-width: 60px;
        font-size: 0.9rem;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 1.5rem;
        text-align: center;
    }
    
    .footer-section {
        margin-bottom: 1.5rem;
    }
    
    .footer-section ul {
        padding: 0;
    }
    
    .social-icons {
        justify-content: center;
    }
    
    .footer-bottom {
        padding-top: 1rem;
        font-size: 0.8rem;
    }
}

@media (max-width: 480px) {
    .navbar-logo {
        font-size: 1.3rem;
    }
    
    .footer {
        padding: 2rem 1rem 1rem;
    }
    
    .footer-section h3 {
        font-size: 1.1rem;
    }
    
    .social-icons a {
        width: 35px;
        height: 35px;
    }
}