/* ============================================================
   WP AI Chatbot — Frontend Widget Styles
   Uses CSS custom properties so theme color is injected by JS.
   ============================================================ */

:root {
    --wpaicb-primary:       #2563eb;
    --wpaicb-primary-dark:  #1d4ed8;
    --wpaicb-primary-light: #dbeafe;
    --wpaicb-bg:            #ffffff;
    --wpaicb-surface:       #f8fafc;
    --wpaicb-border:        #e2e8f0;
    --wpaicb-text:          #1e293b;
    --wpaicb-text-muted:    #64748b;
    --wpaicb-shadow:        0 20px 60px rgba(0,0,0,.18), 0 4px 16px rgba(0,0,0,.10);
    --wpaicb-radius:        16px;
    --wpaicb-radius-sm:     10px;
    --wpaicb-radius-msg:    18px;
    --wpaicb-font:          -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    --wpaicb-z:             99999;
    --wpaicb-width:         380px;
    --wpaicb-height:        560px;
    --wpaicb-toggle-size:   56px;
    --wpaicb-offset:        24px;
}

/* ── Widget wrapper ─────────────────────────────────────── */
.wpaicb-widget {
    position: fixed !important;
    /* Default: bottom-right — overridden by JS position class */
    bottom: var(--wpaicb-offset) !important;
    right:  var(--wpaicb-offset) !important;
    left:   auto !important;
    top:    auto !important;
    z-index: var(--wpaicb-z) !important;
    font-family: var(--wpaicb-font);
    font-size: 14px;
    line-height: 1.5;
    color: var(--wpaicb-text);
    -webkit-font-smoothing: antialiased;
    /* Reset any theme interference */
    margin: 0 !important;
    padding: 0 !important;
    width: auto !important;
    max-width: none !important;
    background: transparent !important;
    border: none !important;
    box-shadow: none !important;
}
.wpaicb-widget.wpaicb-pos-bottom-right {
    bottom: var(--wpaicb-offset) !important;
    right:  var(--wpaicb-offset) !important;
    left:   auto !important;
}
.wpaicb-widget.wpaicb-pos-bottom-left {
    bottom: var(--wpaicb-offset) !important;
    left:   var(--wpaicb-offset) !important;
    right:  auto !important;
}

/* ── Toggle button ──────────────────────────────────────── */
.wpaicb-toggle {
    width:  var(--wpaicb-toggle-size);
    height: var(--wpaicb-toggle-size);
    border-radius: 50%;
    border: none;
    background: var(--wpaicb-primary);
    color: #fff;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 20px rgba(37,99,235,.45);
    transition: transform .2s ease, box-shadow .2s ease, background .2s ease;
    position: relative;
    z-index: 1;
}
.wpaicb-toggle:hover {
    background: var(--wpaicb-primary-dark);
    transform: scale(1.08);
    box-shadow: 0 6px 28px rgba(37,99,235,.55);
}
.wpaicb-toggle:active {
    transform: scale(.96);
}
.wpaicb-toggle svg {
    width: 24px;
    height: 24px;
    transition: opacity .15s, transform .2s;
    position: absolute;
}
.wpaicb-toggle .wpaicb-icon-chat   { opacity: 1;  transform: scale(1) rotate(0deg); }
.wpaicb-toggle .wpaicb-icon-close  { opacity: 0;  transform: scale(.5) rotate(-90deg); }
.wpaicb-widget.wpaicb-open .wpaicb-toggle .wpaicb-icon-chat  { opacity: 0;  transform: scale(.5) rotate(90deg); }
.wpaicb-widget.wpaicb-open .wpaicb-toggle .wpaicb-icon-close { opacity: 1;  transform: scale(1) rotate(0deg); }

/* Notification badge */
.wpaicb-toggle::after {
    content: '';
    position: absolute;
    top: 4px; right: 4px;
    width: 10px; height: 10px;
    border-radius: 50%;
    background: #ef4444;
    border: 2px solid #fff;
    opacity: 0;
    transform: scale(0);
    transition: opacity .2s, transform .2s;
}
.wpaicb-widget.wpaicb-has-new .wpaicb-toggle::after {
    opacity: 1;
    transform: scale(1);
}

/* ── Chat window ────────────────────────────────────────── */
.wpaicb-window {
    position: absolute;
    bottom: calc(var(--wpaicb-toggle-size) + 12px);
    width:  var(--wpaicb-width);
    height: var(--wpaicb-height);
    background: var(--wpaicb-bg);
    border-radius: var(--wpaicb-radius);
    box-shadow: var(--wpaicb-shadow);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    transform-origin: bottom right;
    transition: opacity .22s ease, transform .22s cubic-bezier(.34,1.56,.64,1);
    border: 1px solid var(--wpaicb-border);
}
.wpaicb-pos-bottom-right .wpaicb-window { right: 0; }
.wpaicb-pos-bottom-left  .wpaicb-window { left: 0;  transform-origin: bottom left; }

.wpaicb-window[hidden] {
    display: flex !important; /* keep in layout for animation */
    opacity: 0;
    transform: scale(.85) translateY(16px);
    pointer-events: none;
}
.wpaicb-widget.wpaicb-open .wpaicb-window {
    opacity: 1;
    transform: scale(1) translateY(0);
    pointer-events: all;
}

/* ── Header ─────────────────────────────────────────────── */
.wpaicb-header {
    background: var(--wpaicb-primary);
    color: #fff;
    padding: 14px 16px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-shrink: 0;
}
.wpaicb-header-left {
    display: flex;
    align-items: center;
    gap: 10px;
}
.wpaicb-avatar {
    width: 38px; height: 38px;
    border-radius: 50%;
    background: rgba(255,255,255,.2);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}
.wpaicb-avatar svg { width: 20px; height: 20px; fill: #fff; }
.wpaicb-bot-name {
    font-weight: 600;
    font-size: 15px;
    letter-spacing: .01em;
}
.wpaicb-status {
    font-size: 11px;
    opacity: .85;
    display: flex;
    align-items: center;
    gap: 4px;
    margin-top: 1px;
}
.wpaicb-status-dot {
    width: 7px; height: 7px;
    border-radius: 50%;
    background: #4ade80;
    display: inline-block;
    box-shadow: 0 0 0 2px rgba(74,222,128,.35);
    animation: wpaicb-pulse 2s infinite;
}
@keyframes wpaicb-pulse {
    0%, 100% { box-shadow: 0 0 0 2px rgba(74,222,128,.35); }
    50%       { box-shadow: 0 0 0 4px rgba(74,222,128,.15); }
}
.wpaicb-header-actions { display: flex; gap: 4px; }
.wpaicb-btn-icon {
    width: 32px; height: 32px;
    border-radius: 8px;
    border: none;
    background: rgba(255,255,255,.15);
    color: #fff;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background .15s;
}
.wpaicb-btn-icon:hover  { background: rgba(255,255,255,.28); }
.wpaicb-btn-icon svg { width: 16px; height: 16px; }

/* ── Messages area ──────────────────────────────────────── */
.wpaicb-messages {
    flex: 1;
    overflow-y: auto;
    padding: 16px;
    display: flex;
    flex-direction: column;
    gap: 12px;
    scroll-behavior: smooth;
    background: var(--wpaicb-surface);
}
.wpaicb-messages::-webkit-scrollbar { width: 4px; }
.wpaicb-messages::-webkit-scrollbar-track { background: transparent; }
.wpaicb-messages::-webkit-scrollbar-thumb { background: var(--wpaicb-border); border-radius: 2px; }

/* Message bubbles */
#wpaicb-messages .wpaicb-msg {
    display: flex !important;
    flex-direction: row !important;
    gap: 8px !important;
    animation: wpaicb-fade-in .2s ease;
    align-items: flex-end !important;
    width: 100% !important;
    box-sizing: border-box !important;
    float: none !important;
}
@keyframes wpaicb-fade-in {
    from { opacity: 0; transform: translateY(8px); }
    to   { opacity: 1; transform: translateY(0); }
}
#wpaicb-messages .wpaicb-msg-bot  { justify-content: flex-start !important; }
#wpaicb-messages .wpaicb-msg-user { justify-content: flex-end !important; }

/* Inner wrapper that holds bubble + timestamp */
#wpaicb-messages .wpaicb-msg > div:not(.wpaicb-msg-avatar) {
    max-width: 82% !important;
    min-width: 40px !important;
    display: flex !important;
    flex-direction: column !important;
}

.wpaicb-msg-avatar {
    width: 28px !important;
    height: 28px !important;
    border-radius: 50% !important;
    background: var(--wpaicb-primary-light) !important;
    color: var(--wpaicb-primary) !important;
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
    flex-shrink: 0 !important;
    font-size: 12px !important;
    font-weight: 600 !important;
}
.wpaicb-msg-avatar svg { width: 14px !important; height: 14px !important; }

#wpaicb-messages .wpaicb-bubble {
    display: block !important;
    width: auto !important;
    max-width: 100% !important;
    min-width: 0 !important;
    padding: 10px 14px !important;
    border-radius: var(--wpaicb-radius-msg) !important;
    line-height: 1.55 !important;
    word-break: break-word !important;
    word-wrap: break-word !important;
    overflow-wrap: break-word !important;
    white-space: normal !important;
    box-sizing: border-box !important;
    font-size: 14px !important;
    font-family: var(--wpaicb-font) !important;
    float: none !important;
}
#wpaicb-messages .wpaicb-msg-bot .wpaicb-bubble {
    background: var(--wpaicb-bg) !important;
    border: 1px solid var(--wpaicb-border) !important;
    border-bottom-left-radius: 4px !important;
    color: var(--wpaicb-text) !important;
}
#wpaicb-messages .wpaicb-msg-user .wpaicb-bubble {
    background: var(--wpaicb-primary) !important;
    color: #fff !important;
    border-bottom-right-radius: 4px !important;
}

/* Inline formatting inside bubbles */
.wpaicb-bubble strong  { font-weight: 600; }
.wpaicb-bubble code {
    background: rgba(0,0,0,.07);
    border-radius: 4px;
    padding: 1px 5px;
    font-family: 'SFMono-Regular', Consolas, monospace;
    font-size: .9em;
}
.wpaicb-msg-user .wpaicb-bubble code { background: rgba(255,255,255,.2); }
.wpaicb-bubble a {
    color: var(--wpaicb-primary);
    text-decoration: underline;
    text-underline-offset: 2px;
}
.wpaicb-msg-user .wpaicb-bubble a { color: #bfdbfe; }

/* Timestamp */
.wpaicb-msg-time {
    font-size: 10px;
    color: var(--wpaicb-text-muted);
    margin-top: 3px;
    padding: 0 4px;
    text-align: right;
}
.wpaicb-msg-bot  .wpaicb-msg-time { text-align: left; }

/* Typing indicator */
.wpaicb-typing .wpaicb-bubble {
    padding: 12px 16px;
    min-width: 60px;
    display: flex;
    gap: 4px;
    align-items: center;
}
.wpaicb-dot {
    width: 6px; height: 6px;
    border-radius: 50%;
    background: var(--wpaicb-text-muted);
    animation: wpaicb-bounce .9s infinite ease-in-out;
}
.wpaicb-dot:nth-child(1) { animation-delay: 0s; }
.wpaicb-dot:nth-child(2) { animation-delay: .15s; }
.wpaicb-dot:nth-child(3) { animation-delay: .3s; }
@keyframes wpaicb-bounce {
    0%, 80%, 100% { transform: scale(.7); opacity: .5; }
    40%           { transform: scale(1);  opacity: 1; }
}

/* ── Suggestions ────────────────────────────────────────── */
.wpaicb-suggestions {
    padding: 8px 12px;
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    border-top: 1px solid var(--wpaicb-border);
    background: var(--wpaicb-bg);
    flex-shrink: 0;
}
.wpaicb-suggestion {
    background: var(--wpaicb-primary-light);
    color: var(--wpaicb-primary);
    border: 1px solid transparent;
    border-radius: 20px;
    padding: 5px 12px;
    font-size: 12px;
    font-family: var(--wpaicb-font);
    cursor: pointer;
    transition: background .15s, border-color .15s;
    white-space: nowrap;
}
.wpaicb-suggestion:hover {
    background: #fff;
    border-color: var(--wpaicb-primary);
}

/* ── Input area ─────────────────────────────────────────── */
.wpaicb-input-area {
    padding: 12px 14px;
    border-top: 1px solid var(--wpaicb-border);
    background: var(--wpaicb-bg);
    flex-shrink: 0;
}
.wpaicb-input-row {
    display: flex;
    align-items: flex-end;
    gap: 8px;
    background: var(--wpaicb-surface);
    border: 1.5px solid var(--wpaicb-border);
    border-radius: 12px;
    padding: 8px 8px 8px 12px;
    transition: border-color .2s;
}
.wpaicb-input-row:focus-within {
    border-color: var(--wpaicb-primary);
    box-shadow: 0 0 0 3px rgba(37,99,235,.12);
}
.wpaicb-input {
    flex: 1;
    border: none;
    outline: none;
    background: transparent;
    font-family: var(--wpaicb-font);
    font-size: 14px;
    color: var(--wpaicb-text);
    resize: none;
    overflow-y: hidden;
    max-height: 120px;
    line-height: 1.5;
}
.wpaicb-input::placeholder { color: var(--wpaicb-text-muted); }
.wpaicb-send-btn {
    width: 34px; height: 34px;
    border-radius: 8px;
    border: none;
    background: var(--wpaicb-primary);
    color: #fff;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    transition: background .15s, opacity .15s, transform .1s;
}
.wpaicb-send-btn:hover   { background: var(--wpaicb-primary-dark); }
.wpaicb-send-btn:active  { transform: scale(.92); }
.wpaicb-send-btn:disabled { opacity: .5; cursor: not-allowed; }
.wpaicb-send-btn svg { width: 16px; height: 16px; }

.wpaicb-footer-note {
    font-size: 10px;
    color: var(--wpaicb-text-muted);
    text-align: center;
    margin-top: 6px;
    opacity: .7;
}

/* ── Error message ──────────────────────────────────────── */
.wpaicb-error-bubble {
    background: #fef2f2;
    border: 1px solid #fecaca;
    color: #dc2626;
    border-radius: var(--wpaicb-radius-msg);
    padding: 10px 14px;
    font-size: 13px;
    max-width: 82%;
}

/* ── Responsive ─────────────────────────────────────────── */
@media (max-width: 480px) {
    :root {
        --wpaicb-width:   calc(100vw - 16px);
        --wpaicb-height:  70vh;
        --wpaicb-offset:  8px;
    }
    .wpaicb-pos-bottom-right .wpaicb-window { right: 0; }
    .wpaicb-pos-bottom-left  .wpaicb-window { left: 0; }
}

/* ── Screen reader only ─────────────────────────────────── */
.screen-reader-text {
    clip: rect(1px,1px,1px,1px);
    clip-path: inset(50%);
    height: 1px; width: 1px;
    overflow: hidden;
    position: absolute;
    white-space: nowrap;
}