/* Krkn Chatbot Styles */
:root {
    --krkn-primary: #1a73e8;
    --krkn-primary-dark: #1557b0;
    --krkn-secondary: #34a853;
    --krkn-danger: #ea4335;
    --krkn-warning: #fbbc04;
    --krkn-surface: #ffffff;
    --krkn-surface-variant: #f8f9fa;
    --krkn-on-surface: #202124;
    --krkn-on-surface-variant: #5f6368;
    --krkn-outline: #dadce0;
    --krkn-shadow: rgba(0, 0, 0, 0.1);
    --krkn-shadow-hover: rgba(0, 0, 0, 0.15);
    --krkn-border-radius: 8px;
    --krkn-border-radius-lg: 12px;
    --krkn-spacing-xs: 4px;
    --krkn-spacing-sm: 8px;
    --krkn-spacing-md: 16px;
    --krkn-spacing-lg: 24px;
    --krkn-font-size-sm: 12px;
    --krkn-font-size-base: 14px;
    --krkn-font-size-lg: 16px;
    --krkn-z-index-overlay: 9999;
}

/* Dark mode support */
@media (prefers-color-scheme: dark) {
    :root {
        --krkn-surface: #1f1f1f;
        --krkn-surface-variant: #2d2d2d;
        --krkn-on-surface: #e8eaed;
        --krkn-on-surface-variant: #9aa0a6;
        --krkn-outline: #3c4043;
        --krkn-shadow: rgba(0, 0, 0, 0.3);
        --krkn-shadow-hover: rgba(0, 0, 0, 0.4);
    }
}

/* Chat Button */
.krkn-chat-button {
    position: fixed;
    bottom: var(--krkn-spacing-lg);
    right: var(--krkn-spacing-lg);
    z-index: var(--krkn-z-index-overlay);
    background: var(--krkn-primary);
    color: white;
    border: none;
    border-radius: 50px;
    padding: var(--krkn-spacing-sm) var(--krkn-spacing-md);
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: var(--krkn-spacing-xs);
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    font-size: var(--krkn-font-size-sm);
    font-weight: 500;
    box-shadow: 0 4px 12px var(--krkn-shadow);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    user-select: none;
    max-width: 160px;
}

.krkn-chat-button:hover {
    background: var(--krkn-primary-dark);
    box-shadow: 0 6px 20px var(--krkn-shadow-hover);
    transform: translateY(-2px);
}

.krkn-chat-button.active {
    border-radius: var(--krkn-border-radius);
    padding: var(--krkn-spacing-sm);
    max-width: 48px;
}

.krkn-chat-button.active .krkn-chat-text {
    opacity: 0;
    width: 0;
    overflow: hidden;
}

.krkn-chat-button-logo {
    width: 40px;
    height: 40px;
    flex-shrink: 0;
}

.krkn-chat-text {
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    white-space: nowrap;
}

/* Chat Window */
.krkn-chat-window {
    position: fixed;
    bottom: var(--krkn-spacing-lg);
    right: var(--krkn-spacing-lg);
    z-index: var(--krkn-z-index-overlay);
    width: 400px;
    height: 600px;
    min-width: 300px;
    min-height: 400px;
    max-width: 90vw;
    max-height: 90vh;
    background: var(--krkn-surface);
    border: 1px solid var(--krkn-outline);
    border-radius: var(--krkn-border-radius-lg);
    box-shadow: 0 8px 32px var(--krkn-shadow);
    display: flex;
    flex-direction: column;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px) scale(0.95);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    overflow: hidden;
    resize: both;
}

.krkn-chat-window.active {
    opacity: 1;
    visibility: visible;
    transform: translateY(0) scale(1);
}

/* Custom resize handle */
.krkn-chat-window::after {
    content: '';
    position: absolute;
    bottom: 2px;
    right: 2px;
    width: 16px;
    height: 16px;
    background: repeating-linear-gradient(
        45deg,
        var(--krkn-on-surface-variant) 0px,
        var(--krkn-on-surface-variant) 2px,
        transparent 2px,
        transparent 4px
    );
    cursor: nw-resize;
    opacity: 0.6;
    transition: opacity 0.2s;
}

.krkn-chat-window:hover::after {
    opacity: 1;
}

/* Chat Header */
.krkn-chat-header {
    background: var(--krkn-primary);
    color: white;
    padding: var(--krkn-spacing-md) var(--krkn-spacing-lg);
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-radius: var(--krkn-border-radius-lg) var(--krkn-border-radius-lg) 0 0;
    cursor: move;
    user-select: none;
    transition: background-color 0.2s;
}

.krkn-chat-header:hover,
.krkn-chat-header:active {
    background: var(--krkn-primary-dark);
}

.krkn-chat-title-content {
    display: flex;
    align-items: center;
    gap: var(--krkn-spacing-sm);
}

.krkn-chat-logo {
    width: 56px;
    height: 56px;
    flex-shrink: 0;
}

.krkn-chat-title-text {
    flex: 1;
}

.krkn-chat-title h3 {
    margin: 0;
    font-size: var(--krkn-font-size-lg);
    font-weight: 600;
}

.krkn-chat-title p {
    margin: 2px 0 0 0;
    font-size: var(--krkn-font-size-sm);
    opacity: 0.9;
}

.krkn-chat-close {
    background: none;
    border: none;
    color: white;
    cursor: pointer;
    padding: var(--krkn-spacing-xs);
    border-radius: var(--krkn-border-radius);
    transition: background-color 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
}

.krkn-chat-close:hover {
    background: rgba(255, 255, 255, 0.1);
}

/* Messages Container */
.krkn-chat-messages {
    flex: 1;
    overflow-y: auto;
    padding: var(--krkn-spacing-md);
    background: var(--krkn-surface-variant);
    scrollbar-width: thin;
    scrollbar-color: var(--krkn-outline) transparent;
}

.krkn-chat-messages::-webkit-scrollbar {
    width: 6px;
}

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

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

.krkn-chat-messages::-webkit-scrollbar-thumb:hover {
    background: var(--krkn-on-surface-variant);
}

/* Messages */
.krkn-message {
    margin-bottom: var(--krkn-spacing-md);
    display: flex;
    flex-direction: column;
}

.krkn-message-user {
    align-items: flex-end;
}

.krkn-message-bot {
    align-items: flex-start;
}

.krkn-message-content {
    max-width: 80%;
    padding: var(--krkn-spacing-sm) var(--krkn-spacing-md);
    border-radius: var(--krkn-border-radius-lg);
    font-size: var(--krkn-font-size-base);
    line-height: 1.4;
    word-wrap: break-word;
}

.krkn-message-user .krkn-message-content {
    background: var(--krkn-primary);
    color: white;
    border-bottom-right-radius: var(--krkn-spacing-xs);
}

.krkn-message-bot .krkn-message-content {
    background: var(--krkn-surface);
    color: var(--krkn-on-surface);
    border: 1px solid var(--krkn-outline);
    border-bottom-left-radius: var(--krkn-spacing-xs);
}

.krkn-message-content p {
    margin: 0;
}

.krkn-message-content p + p {
    margin-top: var(--krkn-spacing-sm);
}

.krkn-message-content strong {
    font-weight: 600;
}

.krkn-message-content code {
    background: var(--krkn-surface-variant);
    padding: 2px 4px;
    border-radius: 3px;
    font-family: 'Monaco', 'Menlo', 'Ubuntu Mono', monospace;
    font-size: 0.9em;
}

.krkn-message-content a {
    color: var(--krkn-primary);
    text-decoration: none;
}

.krkn-message-content a:hover {
    text-decoration: underline;
}

.krkn-message-time {
    font-size: var(--krkn-font-size-sm);
    color: var(--krkn-on-surface-variant);
    margin-top: var(--krkn-spacing-xs);
    padding: 0 var(--krkn-spacing-sm);
}

/* Typing Indicator */
.krkn-typing-indicator .krkn-message-content {
    padding: var(--krkn-spacing-md);
}

.krkn-typing-dots {
    display: flex;
    gap: 4px;
    align-items: center;
}

.krkn-typing-dots span {
    width: 6px;
    height: 6px;
    background: var(--krkn-on-surface-variant);
    border-radius: 50%;
    animation: krkn-typing 1.4s infinite ease-in-out both;
}

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

@keyframes krkn-typing {
    0%, 80%, 100% {
        transform: scale(0.8);
        opacity: 0.5;
    }
    40% {
        transform: scale(1);
        opacity: 1;
    }
}

/* Input Container */
.krkn-chat-input-container {
    background: var(--krkn-surface);
    border-top: 1px solid var(--krkn-outline);
    padding: var(--krkn-spacing-md);
}

/* Quick Questions */
.krkn-quick-questions {
    display: flex;
    gap: var(--krkn-spacing-xs);
    margin-bottom: var(--krkn-spacing-md);
    flex-wrap: wrap;
}

.krkn-quick-btn {
    background: var(--krkn-surface-variant);
    border: 1px solid var(--krkn-outline);
    color: var(--krkn-on-surface);
    padding: var(--krkn-spacing-xs) var(--krkn-spacing-sm);
    border-radius: 20px;
    font-size: var(--krkn-font-size-sm);
    cursor: pointer;
    transition: all 0.2s;
    white-space: nowrap;
    flex-shrink: 0;
}

.krkn-quick-btn:hover {
    background: var(--krkn-primary);
    color: white;
    border-color: var(--krkn-primary);
}

/* Input Wrapper */
.krkn-chat-input-wrapper {
    display: flex;
    gap: var(--krkn-spacing-sm);
    align-items: center;
}

.krkn-chat-input-wrapper input {
    flex: 1;
    padding: var(--krkn-spacing-sm) var(--krkn-spacing-md);
    border: 1px solid var(--krkn-outline);
    border-radius: 25px;
    font-size: var(--krkn-font-size-base);
    font-family: inherit;
    background: var(--krkn-surface);
    color: var(--krkn-on-surface);
    outline: none;
    transition: border-color 0.2s;
}

.krkn-chat-input-wrapper input:focus {
    border-color: var(--krkn-primary);
}

.krkn-chat-input-wrapper input::placeholder {
    color: var(--krkn-on-surface-variant);
}

.krkn-chat-send {
    background: var(--krkn-primary);
    color: white;
    border: none;
    border-radius: 50%;
    width: 40px;
    height: 40px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background-color 0.2s;
    flex-shrink: 0;
}

.krkn-chat-send:hover {
    background: var(--krkn-primary-dark);
}

.krkn-chat-send:disabled {
    background: var(--krkn-outline);
    cursor: not-allowed;
}

/* Responsive Design */
@media (max-width: 768px) {
    .krkn-chat-window {
        width: calc(100vw - 2 * var(--krkn-spacing-md));
        height: calc(100vh - 2 * var(--krkn-spacing-md));
        bottom: var(--krkn-spacing-md);
        right: var(--krkn-spacing-md);
        left: var(--krkn-spacing-md);
        max-height: 600px;
    }
    
    .krkn-chat-button {
        bottom: var(--krkn-spacing-md);
        right: var(--krkn-spacing-md);
    }
    
    .krkn-quick-questions {
        flex-direction: column;
    }
    
    .krkn-quick-btn {
        text-align: center;
        white-space: normal;
    }
}

@media (max-width: 480px) {
    .krkn-chat-window {
        width: 100vw;
        height: 100vh;
        bottom: 0;
        right: 0;
        left: 0;
        border-radius: 0;
        border: none;
    }
    
    .krkn-chat-header {
        border-radius: 0;
    }
    
    .krkn-chat-button {
        padding: var(--krkn-spacing-sm);
        border-radius: 50%;
        max-width: none;
    }
    
    .krkn-chat-button .krkn-chat-text {
        display: none;
    }

    .krkn-chat-button-logo {
        width: 32px;
        height: 32px;
    }

    .krkn-chat-logo {
        width: 49px;
        height: 49px;
    }
}

/* Accessibility */
@media (prefers-reduced-motion: reduce) {
    .krkn-chat-button,
    .krkn-chat-window,
    .krkn-typing-dots span {
        animation: none;
        transition: none;
    }
}

/* Focus styles for keyboard navigation */
.krkn-chat-button:focus,
.krkn-chat-close:focus,
.krkn-chat-send:focus,
.krkn-quick-btn:focus {
    outline: 2px solid var(--krkn-primary);
    outline-offset: 2px;
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    .krkn-chat-window {
        border-width: 2px;
    }
    
    .krkn-message-content {
        border-width: 2px;
    }
    
    .krkn-quick-btn {
        border-width: 2px;
    }
}