/**
 * ChatBot Widget Styles
 * Supports floating, embedded, and full-page layouts
 * Compatible with light and dark themes
 */

/* ============================================================
   Variables - Integrated with Design System
   ============================================================ */
:root {
    /* Chatbot uses design system tokens for theme consistency */
    --chatbot-primary: var(--color-primary-500);
    --chatbot-primary-hover: var(--color-primary-600);
    --chatbot-bg: var(--bg-primary);
    --chatbot-bg-secondary: var(--bg-secondary);
    --chatbot-text: var(--text-primary);
    --chatbot-text-muted: var(--text-muted);
    --chatbot-border: var(--border-default);
    --chatbot-shadow: var(--shadow-lg);
    --chatbot-user-bg: var(--color-primary-500);
    --chatbot-user-text: var(--color-neutral-0);
    --chatbot-bot-bg: var(--bg-tertiary);
    --chatbot-bot-text: var(--text-primary);
    --chatbot-radius: var(--radius-xl);
    --chatbot-header-bg: var(--color-primary-500);
    --chatbot-header-text: var(--color-neutral-0);
}

[data-theme="dark"] {
    /* Dark theme overrides - inherits most from design system automatically */
    --chatbot-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
    --chatbot-header-bg: var(--color-primary-600);
}

/* ============================================================
   Floating Widget
   ============================================================ */
.chatbot-floating {
    position: fixed;
    z-index: 9999;
}

.chatbot-floating.chatbot-position-bottom-right {
    bottom: 20px;
    right: 20px;
}

.chatbot-floating.chatbot-position-bottom-left {
    bottom: 20px;
    left: 20px;
}

.chatbot-floating.chatbot-position-top-right {
    top: 100px;
    right: 20px;
}

.chatbot-floating.chatbot-position-top-left {
    top: 100px;
    left: 20px;
}

/* Toggle button */
.chatbot-floating .chatbot-toggle {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 12px var(--chatbot-shadow);
    transition: transform var(--duration-300) var(--ease-in-out), box-shadow var(--duration-300) var(--ease-in-out);
    border: none;
    cursor: pointer;
}

.chatbot-floating .chatbot-toggle:hover {
    transform: scale(1.1);
    box-shadow: 0 6px 16px var(--chatbot-shadow);
}

.chatbot-floating .chatbot-toggle i {
    font-size: 24px;
    transition: opacity var(--duration-200) var(--ease-in-out), transform var(--duration-200) var(--ease-in-out);
}

.chatbot-floating .chatbot-toggle .chatbot-icon-close {
    position: absolute;
    opacity: 0;
    transform: rotate(-90deg);
}

.chatbot-floating.open .chatbot-toggle .chatbot-icon-open {
    opacity: 0;
    transform: rotate(90deg);
}

.chatbot-floating.open .chatbot-toggle .chatbot-icon-close {
    opacity: 1;
    transform: rotate(0);
}

/* Chat container */
.chatbot-floating .chatbot-container {
    position: absolute;
    bottom: 70px;
    right: 0;
    width: 380px;
    max-width: calc(100vw - 40px);
    height: 500px;
    max-height: calc(100vh - 150px);
    background: var(--chatbot-bg);
    border-radius: var(--chatbot-radius);
    box-shadow: 0 8px 32px var(--chatbot-shadow);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px) scale(0.95);
    transition: opacity var(--duration-300) var(--ease-in-out), transform var(--duration-300) var(--ease-in-out), visibility var(--duration-300);
}

.chatbot-floating.chatbot-position-bottom-left .chatbot-container {
    right: auto;
    left: 0;
}

.chatbot-floating.chatbot-position-top-right .chatbot-container,
.chatbot-floating.chatbot-position-top-left .chatbot-container {
    bottom: auto;
    top: 70px;
    transform: translateY(-20px) scale(0.95);
}

.chatbot-floating .chatbot-container.open {
    opacity: 1;
    visibility: visible;
    transform: translateY(0) scale(1);
}

/* ============================================================
   Embedded Widget
   ============================================================ */
.chatbot-embedded {
    width: 100%;
    border-radius: var(--chatbot-radius);
    overflow: hidden;
    box-shadow: 0 2px 8px var(--chatbot-shadow);
}

.chatbot-embedded .chatbot-container {
    display: flex;
    flex-direction: column;
    height: 100%;
    background: var(--chatbot-bg);
}

/* ============================================================
   Full Page Widget
   ============================================================ */
.chatbot-fullpage {
    width: 100%;
    max-width: 800px;
    margin: 0 auto;
    height: calc(100vh - 200px);
    min-height: 400px;
}

.chatbot-fullpage .chatbot-container {
    display: flex;
    flex-direction: column;
    height: 100%;
    background: var(--chatbot-bg);
    border-radius: var(--chatbot-radius);
    box-shadow: 0 4px 16px var(--chatbot-shadow);
    overflow: hidden;
}

.chatbot-fullpage .chatbot-messages {
    flex: 1;
}

.chatbot-fullpage .chatbot-input-wrapper {
    display: flex;
    gap: 8px;
}

.chatbot-fullpage .chatbot-input {
    flex: 1;
}

/* ============================================================
   Header
   ============================================================ */
.chatbot-header {
    display: flex;
    align-items: center;
    padding: 12px 16px;
    background: var(--chatbot-header-bg);
    color: var(--chatbot-header-text);
    flex-shrink: 0;
}

.chatbot-title {
    font-weight: 600;
    font-size: 16px;
}

.chatbot-close {
    margin-left: auto;
}

.chatbot-header-actions {
    display: flex;
    gap: 8px;
}

/* ============================================================
   Messages Area
   ============================================================ */
.chatbot-messages {
    flex: 1;
    overflow-y: auto;
    padding: 16px;
    display: flex;
    flex-direction: column;
    gap: 12px;
    background: var(--chatbot-bg-secondary);
}

/* Custom scrollbar */
.chatbot-messages::-webkit-scrollbar {
    width: 6px;
}

.chatbot-messages::-webkit-scrollbar-track {
    background: transparent;
}

.chatbot-messages::-webkit-scrollbar-thumb {
    background: var(--chatbot-border);
    border-radius: 3px;
}

.chatbot-messages::-webkit-scrollbar-thumb:hover {
    background: var(--chatbot-text-muted);
}

/* Message bubbles */
.chatbot-message {
    max-width: 85%;
    display: flex;
}

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

.chatbot-message-assistant {
    align-self: flex-start;
}

.chatbot-message-content {
    padding: 10px 14px;
    border-radius: 16px;
    line-height: 1.5;
    word-wrap: break-word;
    white-space: pre-wrap;
}

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

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

.chatbot-message.error .chatbot-message-content {
    background: var(--color-error-500);
    color: var(--color-neutral-0);
}

/* Streaming cursor animation */
.chatbot-message.streaming .chatbot-message-content::after {
    content: '|';
    animation: blink 1s infinite;
}

@keyframes blink {
    0%, 50% { opacity: 1; }
    51%, 100% { opacity: 0; }
}

/* ============================================================
   Loading Indicator
   ============================================================ */
.chatbot-loading {
    display: none;
    align-items: center;
    justify-content: center;
    padding: 8px 16px;
    background: var(--chatbot-bg-secondary);
    color: var(--chatbot-text-muted);
    font-size: 14px;
}

.chatbot-loading.show {
    display: flex;
}

/* ============================================================
   Input Area
   ============================================================ */
.chatbot-input-area {
    display: flex;
    gap: 8px;
    padding: 12px 16px;
    background: var(--chatbot-bg);
    border-top: 1px solid var(--chatbot-border);
    flex-shrink: 0;
}

.chatbot-input {
    flex: 1;
    resize: none;
    border-radius: 20px;
    border: 1px solid var(--chatbot-border);
    padding: 10px 16px;
    background: var(--chatbot-bg);
    color: var(--chatbot-text);
    font-size: 14px;
    line-height: 1.4;
    max-height: 120px;
    transition: border-color var(--duration-200) var(--ease-in-out);
}

.chatbot-input:focus {
    outline: none;
    border-color: var(--chatbot-primary);
    box-shadow: var(--focus-ring-shadow);
}

.chatbot-input::placeholder {
    color: var(--chatbot-text-muted);
}

.chatbot-send {
    width: 42px;
    height: 42px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    transition: transform var(--duration-200) var(--ease-in-out);
}

.chatbot-send:hover:not(:disabled) {
    transform: scale(1.1);
}

.chatbot-send:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

/* ============================================================
   Mobile Responsive
   ============================================================ */
@media (max-width: 480px) {
    .chatbot-floating .chatbot-container {
        width: calc(100vw - 20px);
        height: calc(100vh - 100px);
        bottom: 80px;
        right: 10px;
    }

    .chatbot-floating.chatbot-position-bottom-left .chatbot-container {
        left: 10px;
        right: auto;
    }

    .chatbot-floating .chatbot-toggle {
        width: 50px;
        height: 50px;
    }

    .chatbot-floating .chatbot-toggle i {
        font-size: 20px;
    }

    .chatbot-fullpage {
        height: calc(100vh - 150px);
        padding: 0 10px;
    }
}

/* ============================================================
   Animation
   ============================================================ */
@keyframes chatbot-fade-in {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.chatbot-message {
    animation: chatbot-fade-in var(--duration-300) var(--ease-in-out);
}