/**
 * WP Claude Chat Widget Styles
 *
 * @package WP_Claude_Chat
 */

/* CSS Variables (can be overridden by inline styles) */
:root {
    --wp-claude-chat-primary: #0073aa;
    --wp-claude-chat-primary-dark: #005a87;
    --wp-claude-chat-bg: #ffffff;
    --wp-claude-chat-text: #1e293b;
    --wp-claude-chat-text-light: #64748b;
    --wp-claude-chat-border: #e2e8f0;
    --wp-claude-chat-user-bg: var(--wp-claude-chat-primary);
    --wp-claude-chat-user-text: #ffffff;
    --wp-claude-chat-assistant-bg: #f1f5f9;
    --wp-claude-chat-assistant-text: #1e293b;
    --wp-claude-chat-shadow: 0 10px 40px rgba(0, 0, 0, 0.15);
    --wp-claude-chat-radius: 16px;
    --wp-claude-chat-font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

/* Widget Container */
.wp-claude-chat-widget {
    position: fixed;
    z-index: 999999;
    font-family: var(--wp-claude-chat-font);
    font-size: 14px;
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Prevent body scroll when chat is open on mobile */
body.wp-claude-chat-open {
    overflow: hidden;
    position: fixed;
    width: 100%;
    height: 100%;
}

.wp-claude-chat-widget.position-bottom-right {
    bottom: 20px;
    right: 20px;
}

.wp-claude-chat-widget.position-bottom-left {
    bottom: 20px;
    left: 20px;
}

/* Toggle Button */
.wp-claude-chat-toggle {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    border: none;
    background: var(--wp-claude-chat-primary);
    color: white;
    cursor: pointer;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
    transition: transform 0.2s ease, box-shadow 0.2s ease, background-color 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0;
}

.wp-claude-chat-toggle:hover {
    transform: scale(1.05);
    box-shadow: 0 6px 25px rgba(0, 0, 0, 0.25);
    background: var(--wp-claude-chat-primary-dark);
}

.wp-claude-chat-toggle:focus {
    outline: 2px solid var(--wp-claude-chat-primary);
    outline-offset: 2px;
}

.wp-claude-chat-toggle svg {
    width: 28px;
    height: 28px;
    transition: transform 0.2s ease, opacity 0.2s ease;
}

.wp-claude-chat-toggle .close-icon {
    display: none;
}

.wp-claude-chat-widget.is-open .wp-claude-chat-toggle .chat-icon {
    display: none;
}

.wp-claude-chat-widget.is-open .wp-claude-chat-toggle .close-icon {
    display: block;
}

/* Chat Window */
.wp-claude-chat-window {
    position: absolute;
    bottom: 80px;
    width: 380px;
    max-width: calc(100vw - 40px);
    height: 500px;
    max-height: calc(100vh - 120px);
    background: var(--wp-claude-chat-bg);
    border-radius: var(--wp-claude-chat-radius);
    box-shadow: var(--wp-claude-chat-shadow);
    display: none;
    flex-direction: column;
    overflow: hidden;
    opacity: 0;
    transform: translateY(20px) scale(0.95);
    transition: opacity 0.2s ease, transform 0.2s ease;
}

.position-bottom-right .wp-claude-chat-window {
    right: 0;
}

.position-bottom-left .wp-claude-chat-window {
    left: 0;
}

.wp-claude-chat-widget.is-open .wp-claude-chat-window {
    display: flex;
    opacity: 1;
    transform: translateY(0) scale(1);
}

/* Header */
.wp-claude-chat-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 20px;
    background: var(--wp-claude-chat-primary);
    color: white;
}

.wp-claude-chat-header h3 {
    margin: 0;
    font-size: 16px;
    font-weight: 600;
}

.wp-claude-chat-close {
    width: 32px;
    height: 32px;
    border: none;
    background: rgba(255, 255, 255, 0.2);
    color: white;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background-color 0.2s ease;
    padding: 0;
}

.wp-claude-chat-close:hover {
    background: rgba(255, 255, 255, 0.3);
}

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

/* Messages Container */
.wp-claude-chat-messages {
    flex: 1;
    overflow-y: auto;
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 12px;
    background: #fafafa;
}

/* Individual Messages */
.wp-claude-chat-message {
    max-width: 85%;
    padding: 12px 16px;
    border-radius: 12px;
    word-wrap: break-word;
    animation: wp-claude-chat-fade-in 0.3s ease;
}

@keyframes wp-claude-chat-fade-in {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.wp-claude-chat-message.user {
    align-self: flex-end;
    background: var(--wp-claude-chat-user-bg);
    color: var(--wp-claude-chat-user-text);
    border-bottom-right-radius: 4px;
}

.wp-claude-chat-message.assistant {
    align-self: flex-start;
    background: var(--wp-claude-chat-assistant-bg);
    color: var(--wp-claude-chat-assistant-text);
    border-bottom-left-radius: 4px;
}

.wp-claude-chat-message.error {
    background: #fef2f2;
    color: #991b1b;
    border: 1px solid #fecaca;
}

.wp-claude-chat-message a {
    color: inherit;
    text-decoration: underline;
}

.wp-claude-chat-message.user a {
    color: var(--wp-claude-chat-user-text);
}

.wp-claude-chat-message.assistant a {
    color: var(--wp-claude-chat-primary);
}

.wp-claude-chat-message a:hover {
    opacity: 0.8;
}

/* Typing Indicator */
.wp-claude-chat-typing {
    display: flex;
    gap: 4px;
    padding: 12px 16px;
    background: var(--wp-claude-chat-assistant-bg);
    border-radius: 12px;
    border-bottom-left-radius: 4px;
    align-self: flex-start;
    max-width: 60px;
}

.wp-claude-chat-typing span {
    width: 8px;
    height: 8px;
    background: var(--wp-claude-chat-text-light);
    border-radius: 50%;
    animation: wp-claude-chat-bounce 1.4s infinite ease-in-out both;
}

.wp-claude-chat-typing span:nth-child(1) {
    animation-delay: -0.32s;
}

.wp-claude-chat-typing span:nth-child(2) {
    animation-delay: -0.16s;
}

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

/* Welcome Message */
.wp-claude-chat-welcome {
    text-align: center;
    padding: 20px;
    color: var(--wp-claude-chat-text-light);
}

.wp-claude-chat-welcome p {
    margin: 0;
}

/* Form */
.wp-claude-chat-form {
    display: flex;
    gap: 8px;
    padding: 16px;
    border-top: 1px solid var(--wp-claude-chat-border);
    background: var(--wp-claude-chat-bg);
}

.wp-claude-chat-input {
    flex: 1;
    padding: 12px 16px;
    border: 1px solid var(--wp-claude-chat-border);
    border-radius: 24px;
    font-size: 14px;
    font-family: inherit;
    outline: none;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.wp-claude-chat-input:focus {
    border-color: var(--wp-claude-chat-primary);
    box-shadow: 0 0 0 3px rgba(0, 115, 170, 0.1);
}

.wp-claude-chat-input::placeholder {
    color: var(--wp-claude-chat-text-light);
}

.wp-claude-chat-send {
    width: 44px;
    height: 44px;
    border: none;
    background: var(--wp-claude-chat-primary);
    color: white;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background-color 0.2s ease, transform 0.1s ease;
    padding: 0;
    flex-shrink: 0;
}

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

.wp-claude-chat-send:active {
    transform: scale(0.95);
}

.wp-claude-chat-send:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

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

/* Scrollbar */
.wp-claude-chat-messages::-webkit-scrollbar {
    width: 6px;
}

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

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

.wp-claude-chat-messages::-webkit-scrollbar-thumb:hover {
    background: var(--wp-claude-chat-text-light);
}

/* Mobile Responsive */
@media (max-width: 480px) {
    .wp-claude-chat-widget {
        bottom: 10px;
        right: 10px;
    }

    .wp-claude-chat-widget.position-bottom-right,
    .wp-claude-chat-widget.position-bottom-left {
        right: 10px;
        left: auto;
    }

    .wp-claude-chat-toggle {
        width: 54px;
        height: 54px;
    }

    /* Full screen popover on mobile */
    .wp-claude-chat-widget.is-open .wp-claude-chat-toggle {
        display: none;
    }

    .wp-claude-chat-window {
        position: fixed;
        /* Don't use top:0 - let JS position it based on actual viewport */
        left: 0;
        right: 0;
        width: 100%;
        max-width: none;
        max-height: none;
        border-radius: 0;
        z-index: 999999;
        display: none;
        flex-direction: column;
        transform: none;
        opacity: 1;
    }

    .wp-claude-chat-widget.is-open .wp-claude-chat-window {
        display: flex;
    }

    .position-bottom-right .wp-claude-chat-window,
    .position-bottom-left .wp-claude-chat-window {
        left: 0;
        right: 0;
    }

    /* Prevent zoom on input focus (iOS) */
    .wp-claude-chat-input {
        font-size: 16px !important;
        -webkit-text-size-adjust: 100%;
    }

    .wp-claude-chat-header {
        padding: 16px;
        padding-top: calc(env(safe-area-inset-top, 0px) + 16px);
        flex-shrink: 0;
    }

    .wp-claude-chat-messages {
        flex: 1;
        min-height: 0;
        overflow-y: auto;
        -webkit-overflow-scrolling: touch;
        overscroll-behavior: contain;
    }

    .wp-claude-chat-form {
        flex-shrink: 0;
        padding: 12px;
        padding-bottom: calc(env(safe-area-inset-bottom, 0px) + 12px);
        background: var(--wp-claude-chat-bg);
        border-top: 1px solid var(--wp-claude-chat-border);
    }
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
    .wp-claude-chat-toggle,
    .wp-claude-chat-window,
    .wp-claude-chat-message,
    .wp-claude-chat-typing span {
        transition: none;
        animation: none;
    }
}

/* Dark Mode Support (if theme uses prefers-color-scheme) */
@media (prefers-color-scheme: dark) {
    .wp-claude-chat-widget {
        --wp-claude-chat-bg: #1e293b;
        --wp-claude-chat-text: #f1f5f9;
        --wp-claude-chat-text-light: #94a3b8;
        --wp-claude-chat-border: #334155;
        --wp-claude-chat-assistant-bg: #334155;
        --wp-claude-chat-assistant-text: #f1f5f9;
    }

    .wp-claude-chat-messages {
        background: #0f172a;
    }
}