/**
 * @package     MyCompany.Module.N8nChatbot
 * mod_n8n_chatbot — Chat widget CSS
 */

/* Design tokens */
:root {
    --n8n-primary: #6c5ce7;
    --n8n-primary-dark: #5a4bd1;
    --n8n-primary-light: #a29bfe;
    --n8n-accent: #00cec9;
    --n8n-bg-dark: #1a1a2e;
    --n8n-bg-panel: #16213e;
    --n8n-bg-input: #0f3460;
    --n8n-bg-glass: rgba(22, 33, 62, 0.85);
    --n8n-text-primary: #e8e8f0;
    --n8n-text-muted: #6c6c8a;
    --n8n-widget-w: 380px;
    --n8n-widget-h: 520px;
    --n8n-bubble: 60px;
    --n8n-radius-lg: 20px;
    --n8n-radius-md: 14px;
    --n8n-radius-sm: 10px;
    --n8n-fast: 0.2s cubic-bezier(0.4,0,0.2,1);
    --n8n-smooth: 0.35s cubic-bezier(0.4,0,0.2,1);
    --n8n-bounce: 0.4s cubic-bezier(0.34,1.56,0.64,1);
    --n8n-shadow-w: 0 20px 60px rgba(0,0,0,0.4), 0 0 40px rgba(108,92,231,0.15);
    --n8n-shadow-b: 0 8px 32px rgba(108,92,231,0.4);
}

/* Container */
.n8n-chat-container {
    position: fixed;
    bottom: 24px;
    right: 24px;
    z-index: 9999;
    font-family: 'Inter','Segoe UI',system-ui,sans-serif;
    font-size: 14px;
    line-height: 1.5;
    color: var(--n8n-text-primary);
}

/* Toggle button */
.n8n-chat-toggle {
    width: var(--n8n-bubble);
    height: var(--n8n-bubble);
    border-radius: 50%;
    border: none;
    background: linear-gradient(135deg, var(--n8n-primary), var(--n8n-accent));
    color: #fff;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--n8n-shadow-b);
    transition: transform var(--n8n-bounce), box-shadow var(--n8n-fast);
    position: relative;
}
.n8n-chat-toggle:hover { transform: scale(1.1); box-shadow: 0 12px 40px rgba(108,92,231,0.55); }
.n8n-chat-toggle:active { transform: scale(0.95); }
.n8n-chat-toggle svg { width: 28px; height: 28px; fill: currentColor; transition: transform var(--n8n-smooth), opacity var(--n8n-fast); }
.n8n-chat-toggle .n8n-icon-close { position: absolute; transform: scale(0) rotate(90deg); opacity: 0; }
.n8n-chat-container.n8n-open .n8n-chat-toggle .n8n-icon-chat { transform: scale(0) rotate(-90deg); opacity: 0; }
.n8n-chat-container.n8n-open .n8n-chat-toggle .n8n-icon-close { transform: scale(1) rotate(0deg); opacity: 1; }

.n8n-chat-toggle.n8n-pulse { animation: n8nPulse 2s ease-in-out 3; }
@keyframes n8nPulse {
    0%,100% { box-shadow: var(--n8n-shadow-b); }
    50% { box-shadow: 0 8px 32px rgba(108,92,231,0.4), 0 0 0 12px rgba(108,92,231,0.15); }
}

/* Chat window */
.n8n-chat-window {
    position: absolute;
    bottom: calc(var(--n8n-bubble) + 16px);
    right: 0;
    width: var(--n8n-widget-w);
    height: var(--n8n-widget-h);
    border-radius: var(--n8n-radius-lg);
    background: var(--n8n-bg-dark);
    box-shadow: var(--n8n-shadow-w);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    border: 1px solid rgba(108,92,231,0.2);
    transform: scale(0.75) translateY(20px);
    transform-origin: bottom right;
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: transform var(--n8n-bounce), opacity var(--n8n-smooth), visibility 0s linear 0.35s;
}
.n8n-chat-container.n8n-open .n8n-chat-window {
    transform: scale(1) translateY(0);
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    transition: transform var(--n8n-bounce), opacity var(--n8n-smooth), visibility 0s linear 0s;
}

/* Header */
.n8n-chat-header {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px 20px;
    background: var(--n8n-bg-glass);
    backdrop-filter: blur(16px);
    border-bottom: 1px solid rgba(108,92,231,0.15);
    flex-shrink: 0;
}
.n8n-chat-avatar {
    width: 40px; height: 40px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--n8n-primary), var(--n8n-accent));
    display: flex; align-items: center; justify-content: center;
    flex-shrink: 0; position: relative;
}
.n8n-chat-avatar svg { width: 22px; height: 22px; fill: #fff; }
.n8n-chat-avatar::after {
    content: ''; position: absolute; bottom: 1px; right: 1px;
    width: 10px; height: 10px; border-radius: 50%;
    background: #00b894; border: 2px solid var(--n8n-bg-dark);
    animation: n8nOnline 3s ease-in-out infinite;
}
@keyframes n8nOnline { 0%,100% { opacity:1; } 50% { opacity:0.5; } }
.n8n-chat-header-title { font-size: 15px; font-weight: 600; margin: 0; line-height: 1.3; }
.n8n-chat-header-subtitle { font-size: 12px; color: var(--n8n-accent); margin: 0; }

/* Messages */
.n8n-chat-messages {
    flex: 1;
    overflow-y: auto;
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 12px;
    scroll-behavior: smooth;
    background:
        radial-gradient(ellipse at 20% 80%, rgba(108,92,231,0.06), transparent 60%),
        radial-gradient(ellipse at 80% 20%, rgba(0,206,201,0.04), transparent 60%),
        var(--n8n-bg-dark);
}
.n8n-chat-messages::-webkit-scrollbar { width: 5px; }
.n8n-chat-messages::-webkit-scrollbar-track { background: transparent; }
.n8n-chat-messages::-webkit-scrollbar-thumb { background: rgba(108,92,231,0.3); border-radius: 10px; }

.n8n-chat-msg {
    max-width: 82%;
    padding: 10px 16px;
    border-radius: var(--n8n-radius-md);
    word-wrap: break-word;
    box-shadow: 0 2px 12px rgba(0,0,0,0.15);
    animation: n8nMsgIn var(--n8n-bounce) both;
}
@keyframes n8nMsgIn {
    from { opacity: 0; transform: translateY(10px) scale(0.95); }
    to { opacity: 1; transform: translateY(0) scale(1); }
}
.n8n-msg-user {
    align-self: flex-end;
    background: linear-gradient(135deg, #6c5ce7, #a29bfe);
    color: #fff;
    border-bottom-right-radius: 4px;
}
.n8n-msg-bot {
    align-self: flex-start;
    background: var(--n8n-bg-panel);
    border: 1px solid rgba(108,92,231,0.12);
    border-bottom-left-radius: 4px;
}
.n8n-chat-msg-time {
    display: block; font-size: 10px; margin-top: 4px; opacity: 0.55; text-align: right;
}
.n8n-msg-bot .n8n-chat-msg-time { text-align: left; }

.n8n-chat-welcome { text-align: center; padding: 12px; color: var(--n8n-text-muted); font-size: 13px; }

/* Typing indicator */
.n8n-chat-typing {
    align-self: flex-start;
    display: none; align-items: center; gap: 5px;
    padding: 12px 18px;
    background: var(--n8n-bg-panel);
    border-radius: var(--n8n-radius-md);
    border-bottom-left-radius: 4px;
    border: 1px solid rgba(108,92,231,0.12);
}
.n8n-chat-typing.n8n-visible { display: flex; }
.n8n-typing-dot {
    width: 7px; height: 7px; border-radius: 50%;
    background: var(--n8n-primary-light);
    animation: n8nTypeDot 1.4s ease-in-out infinite;
}
.n8n-typing-dot:nth-child(2) { animation-delay: 0.2s; }
.n8n-typing-dot:nth-child(3) { animation-delay: 0.4s; }
@keyframes n8nTypeDot {
    0%,60%,100% { transform: translateY(0); opacity: 0.4; }
    30% { transform: translateY(-6px); opacity: 1; }
}

/* Input area */
.n8n-chat-input-area {
    display: flex; align-items: center; gap: 8px;
    padding: 12px 16px;
    background: var(--n8n-bg-glass);
    backdrop-filter: blur(16px);
    border-top: 1px solid rgba(108,92,231,0.15);
    flex-shrink: 0;
}
.n8n-chat-input {
    flex: 1;
    background: var(--n8n-bg-input);
    border: 1px solid rgba(108,92,231,0.2);
    border-radius: var(--n8n-radius-sm);
    padding: 10px 14px;
    color: var(--n8n-text-primary);
    font-size: 14px; font-family: inherit;
    outline: none; resize: none;
    min-height: 20px; max-height: 80px;
    transition: border-color var(--n8n-fast), box-shadow var(--n8n-fast);
}
.n8n-chat-input::placeholder { color: var(--n8n-text-muted); }
.n8n-chat-input:focus { border-color: var(--n8n-primary); box-shadow: 0 0 0 3px rgba(108,92,231,0.15); }

.n8n-chat-send {
    width: 42px; height: 42px; border-radius: 50%; border: none;
    background: linear-gradient(135deg, var(--n8n-primary), var(--n8n-primary-dark));
    color: #fff; cursor: pointer;
    display: flex; align-items: center; justify-content: center;
    flex-shrink: 0;
    transition: transform var(--n8n-fast), background var(--n8n-fast), box-shadow var(--n8n-fast);
}
.n8n-chat-send svg { width: 18px; height: 18px; fill: currentColor; transition: transform var(--n8n-fast); }
.n8n-chat-send:hover { background: linear-gradient(135deg, var(--n8n-primary-light), var(--n8n-primary)); transform: scale(1.08); box-shadow: 0 4px 16px rgba(108,92,231,0.4); }
.n8n-chat-send:hover svg { transform: translateX(1px); }
.n8n-chat-send:active { transform: scale(0.95); }
.n8n-chat-send:disabled { opacity: 0.4; cursor: not-allowed; transform: none; }

/* Responsive */
@media (max-width: 480px) {
    .n8n-chat-container { bottom: 12px; right: 12px; }
    .n8n-chat-window {
        width: calc(100vw - 24px);
        height: calc(100dvh - 100px);
        border-radius: var(--n8n-radius-md);
    }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
    .n8n-chat-toggle, .n8n-chat-window, .n8n-chat-msg, .n8n-chat-send, .n8n-chat-input {
        transition-duration: 0.01ms !important;
        animation-duration: 0.01ms !important;
    }
}