/* ====================================
   Estate Navi - AI Chat Component
   ==================================== */

/* Chat FAB Button */
.ai-chat-fab {
    position: fixed;
    bottom: var(--spacing-6);
    right: var(--spacing-6);
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
    color: var(--color-text-inverse);
    border: none;
    cursor: pointer;
    box-shadow: var(--shadow-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
    z-index: var(--z-fixed);
}

.ai-chat-fab:hover {
    transform: scale(1.1);
    box-shadow: var(--shadow-xl);
}

.ai-chat-fab svg {
    width: 28px;
    height: 28px;
}

.ai-chat-fab.hidden {
    display: none;
}

/* Chat Window */
.ai-chat-window {
    position: fixed;
    bottom: var(--spacing-6);
    right: var(--spacing-6);
    width: 380px;
    max-width: calc(100vw - var(--spacing-8));
    height: 500px;
    max-height: calc(100vh - var(--spacing-12));
    background: var(--color-surface);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    display: flex;
    flex-direction: column;
    z-index: var(--z-modal);
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px) scale(0.95);
    transition: opacity var(--transition-base), visibility var(--transition-base), transform var(--transition-base);
}

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

/* Chat Header */
.ai-chat-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-4);
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
    color: var(--color-text-inverse);
    border-radius: var(--radius-xl) var(--radius-xl) 0 0;
}

.ai-chat-header-info {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
}

.ai-chat-avatar {
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.ai-chat-avatar svg {
    width: 24px;
    height: 24px;
}

.ai-chat-title {
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
}

.ai-chat-subtitle {
    font-size: var(--font-size-xs);
    opacity: 0.8;
}

.ai-chat-close {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
    border: none;
    color: var(--color-text-inverse);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background var(--transition-fast);
}

.ai-chat-close:hover {
    background: rgba(255, 255, 255, 0.2);
}

.ai-chat-close svg {
    width: 18px;
    height: 18px;
}

/* Chat Messages */
.ai-chat-messages {
    flex: 1;
    overflow-y: auto;
    padding: var(--spacing-4);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-3);
}

.ai-chat-message {
    max-width: 85%;
    padding: var(--spacing-3) var(--spacing-4);
    border-radius: var(--radius-lg);
    font-size: var(--font-size-sm);
    line-height: var(--line-height-relaxed);
}

.ai-chat-message.user {
    align-self: flex-end;
    background: var(--color-primary);
    color: var(--color-text-inverse);
    border-bottom-right-radius: var(--radius-sm);
}

.ai-chat-message.assistant {
    align-self: flex-start;
    background: var(--color-surface-alt);
    color: var(--color-text-primary);
    border-bottom-left-radius: var(--radius-sm);
}

.ai-chat-message.loading {
    display: flex;
    gap: 4px;
    padding: var(--spacing-4);
}

.ai-chat-message.loading span {
    width: 8px;
    height: 8px;
    background: var(--color-text-muted);
    border-radius: 50%;
    animation: chatBounce 1.4s infinite ease-in-out both;
}

.ai-chat-message.loading span:nth-child(1) {
    animation-delay: -0.32s;
}

.ai-chat-message.loading span:nth-child(2) {
    animation-delay: -0.16s;
}

@keyframes chatBounce {

    0%,
    80%,
    100% {
        transform: scale(0);
    }

    40% {
        transform: scale(1);
    }
}

/* Chat Input */
.ai-chat-input-area {
    padding: var(--spacing-3);
    border-top: 1px solid var(--color-border);
}

.ai-chat-form {
    display: flex;
    gap: var(--spacing-2);
}

.ai-chat-input {
    flex: 1;
    padding: var(--spacing-3);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    font-size: var(--font-size-sm);
    resize: none;
    min-height: 44px;
    max-height: 100px;
}

.ai-chat-input:focus {
    outline: none;
    border-color: var(--color-primary);
}

.ai-chat-send {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: var(--color-primary);
    color: var(--color-text-inverse);
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background var(--transition-fast);
    flex-shrink: 0;
}

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

.ai-chat-send:disabled {
    background: var(--color-text-muted);
    cursor: not-allowed;
}

.ai-chat-send svg {
    width: 20px;
    height: 20px;
}

/* Responsive */
@media (max-width: 480px) {
    .ai-chat-window {
        bottom: 0;
        right: 0;
        width: 100%;
        max-width: 100%;
        height: 100%;
        max-height: 100%;
        border-radius: 0;
    }

    .ai-chat-header {
        border-radius: 0;
    }

    .ai-chat-fab {
        bottom: var(--spacing-4);
        right: var(--spacing-4);
    }
}