:root {
    --primary-color: #020024; /* Expertotelcel Dark Blue */
    --secondary-color: #00d4ff; /* Expertotelcel Light Blue */
    --accent-color: #cf2e2e; /* Expertotelcel Red */
    --bg-color: #f4f7f6;
    --chat-bg: #ffffff;
    --text-main: #333333;
    --text-muted: #666666;
    --bot-msg-bg: #f0f4f8;
    --user-msg-bg: var(--primary-color);
    --user-msg-text: #ffffff;
    --border-color: #e0e0e0;
    --font-family: 'Inter', sans-serif;
    --shadow-sm: 0 4px 6px rgba(0,0,0,0.05);
    --shadow-md: 0 10px 20px rgba(0,0,0,0.1);
    --radius-lg: 16px;
    --radius-full: 9999px;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: var(--font-family);
    background: linear-gradient(135deg, #e0eafc 0%, #cfdef3 100%);
    color: var(--text-main);
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
}

.chatbot-wrapper {
    width: 100%;
    max-width: 450px;
    height: 90vh;
    max-height: 850px;
    background: var(--chat-bg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    position: relative;
}

/* Header */
.chat-header {
    background: var(--primary-color);
    color: #ffffff;
    padding: 16px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: var(--shadow-sm);
    z-index: 10;
}

.chat-header-info {
    display: flex;
    align-items: center;
    gap: 12px;
}

.bot-avatar {
    width: 44px;
    height: 44px;
    background: var(--secondary-color);
    border-radius: var(--radius-full);
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 1.2rem;
    position: relative;
}

.online-indicator {
    position: absolute;
    bottom: 2px;
    right: 2px;
    width: 10px;
    height: 10px;
    background: #2ecc71;
    border: 2px solid var(--primary-color);
    border-radius: 50%;
}

.bot-details h1 {
    font-size: 1.1rem;
    font-weight: 600;
    letter-spacing: 0.5px;
}

.bot-details p {
    font-size: 0.75rem;
    color: #d0dbe5;
    margin-top: 2px;
}

.chat-header-actions a {
    color: #ffffff;
    font-size: 1.2rem;
    transition: color 0.3s ease;
}

.chat-header-actions a:hover {
    color: var(--secondary-color);
}

/* Messages Area */
.chat-messages {
    flex: 1;
    padding: 20px;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 16px;
    background: #f8fafc;
    scroll-behavior: smooth;
}

/* Custom Scrollbar */
.chat-messages::-webkit-scrollbar {
    width: 6px;
}
.chat-messages::-webkit-scrollbar-track {
    background: transparent;
}
.chat-messages::-webkit-scrollbar-thumb {
    background: #cbd5e1;
    border-radius: 10px;
}

.message {
    max-width: 85%;
    display: flex;
    flex-direction: column;
    animation: fadeIn 0.3s ease-out forwards;
}

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

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

.message-bubble {
    padding: 12px 16px;
    border-radius: 18px;
    font-size: 0.95rem;
    line-height: 1.5;
    word-wrap: break-word;
}

.message.bot .message-bubble {
    background: var(--bot-msg-bg);
    color: var(--text-main);
    border-bottom-left-radius: 4px;
    box-shadow: 0 1px 2px rgba(0,0,0,0.05);
}

.message.user .message-bubble {
    background: var(--user-msg-bg);
    color: var(--user-msg-text);
    border-bottom-right-radius: 4px;
    box-shadow: 0 1px 2px rgba(0,0,0,0.1);
}

.message-bubble a {
    color: var(--secondary-color);
    text-decoration: underline;
}
.message.user .message-bubble a {
    color: #bae6fd;
}

/* Rich Content (Cards) */
.rich-card {
    background: #ffffff;
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 12px;
    margin-top: 8px;
    box-shadow: var(--shadow-sm);
}

.rich-card h3 {
    font-size: 0.95rem;
    color: var(--primary-color);
    margin-bottom: 6px;
}

.rich-card p {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-bottom: 8px;
}

.rich-card a.card-btn {
    display: inline-block;
    background: var(--secondary-color);
    color: #fff;
    padding: 6px 12px;
    border-radius: 6px;
    text-decoration: none;
    font-size: 0.85rem;
    font-weight: 500;
    transition: background 0.2s;
    border: none;
    cursor: pointer;
}
.rich-card a.card-btn:hover,
.rich-card button.card-btn:hover {
    background: #008pc8;
}

/* Form Inline */
.form-card {
    display: flex;
    flex-direction: column;
    gap: 12px;
}
.form-card input {
    padding: 12px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-family: var(--font-family);
    font-size: 0.9rem;
    outline: none;
    transition: border-color 0.3s;
}
.form-card input:focus {
    border-color: var(--secondary-color);
}
.form-card button {
    padding: 12px;
    font-size: 0.95rem;
    width: 100%;
    text-align: center;
}

/* Typing Indicator */
.typing-indicator {
    display: flex;
    gap: 4px;
    padding: 12px 16px;
    background: var(--bot-msg-bg);
    border-radius: 18px;
    border-bottom-left-radius: 4px;
    align-self: flex-start;
    width: fit-content;
}

.typing-indicator span {
    width: 6px;
    height: 6px;
    background: var(--text-muted);
    border-radius: 50%;
    animation: bounce 1.4s infinite ease-in-out both;
}

.typing-indicator span:nth-child(1) { animation-delay: -0.32s; }
.typing-indicator span:nth-child(2) { animation-delay: -0.16s; }

/* Input Area */
.chat-input-area {
    background: #ffffff;
    border-top: 1px solid var(--border-color);
    padding: 12px 20px;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.chat-options {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    justify-content: flex-end;
}

.option-btn {
    background: #ffffff;
    border: 1px solid var(--secondary-color);
    color: var(--secondary-color);
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
}

.option-btn:hover {
    background: var(--secondary-color);
    color: #ffffff;
}

.chat-form {
    display: flex;
    gap: 10px;
    align-items: center;
}

#chat-input {
    flex: 1;
    padding: 14px 16px;
    border: 1px solid var(--border-color);
    border-radius: 24px;
    font-size: 0.95rem;
    outline: none;
    transition: border-color 0.3s;
    font-family: var(--font-family);
}

#chat-input:focus {
    border-color: var(--secondary-color);
}

#chat-input:disabled {
    background: #f1f5f9;
    cursor: not-allowed;
}

#chat-submit {
    background: var(--primary-color);
    color: #ffffff;
    border: none;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 1.1rem;
    transition: transform 0.2s, background 0.2s;
}

#chat-submit:hover:not(:disabled) {
    background: var(--secondary-color);
    transform: scale(1.05);
}

#chat-submit:disabled {
    background: #cbd5e1;
    cursor: not-allowed;
}

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

@keyframes bounce {
    0%, 80%, 100% { transform: scale(0); }
    40% { transform: scale(1); }
}

/* Responsive */
@media (max-width: 480px) {
    .chatbot-wrapper {
        height: 100vh;
        max-width: 100%;
        border-radius: 0;
    }
}