/* ===================================================
   CHATBOT WIDGET - Bileşim Kimya
   =================================================== */

/* Toggle Button */
#bk-chat-toggle {
    position: fixed;
    bottom: 6rem;
    right: 2rem;
    z-index: 9998;
    width: 60px;
    height: 60px;
    border-radius: 50%;
    border: none;
    background: linear-gradient(135deg, var(--color-brand-blue-dark), #0a2a6e);
    color: #fff;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 8px 32px rgba(1,15,45,0.45);
    transition: transform 0.35s cubic-bezier(0.16,1,0.3,1), box-shadow 0.3s ease;
}
#bk-chat-toggle:hover {
    transform: scale(1.1);
    box-shadow: 0 12px 40px rgba(1,15,45,0.55);
}
#bk-chat-toggle .chat-icon  { font-size: 1.5rem; transition: opacity 0.2s, transform 0.2s; }
#bk-chat-toggle .close-icon { font-size: 1.5rem; position: absolute; opacity: 0; transform: rotate(-90deg); transition: opacity 0.2s, transform 0.2s; }
#bk-chat-toggle.open .chat-icon  { opacity: 0; transform: rotate(90deg); }
#bk-chat-toggle.open .close-icon { opacity: 1; transform: rotate(0deg); }

/* Notification dot */
#bk-chat-toggle::after {
    content: '';
    position: absolute;
    top: 6px;
    right: 6px;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--color-brand-red);
    border: 2px solid #fff;
    animation: pulseNotif 2s infinite;
}
#bk-chat-toggle.open::after { display: none; }

@keyframes pulseNotif {
    0%,100% { transform: scale(1); opacity: 1; }
    50%      { transform: scale(1.3); opacity: 0.7; }
}

/* Chat Panel */
#bk-chat-panel {
    position: fixed;
    bottom: 5.5rem;
    right: 2rem;
    z-index: 9997;
    width: 360px;
    max-height: min(520px, calc(100vh - 8rem));
    border-radius: 20px;
    background: #fff;
    box-shadow: 0 25px 80px rgba(1,15,45,0.25), 0 0 0 1px rgba(1,15,45,0.07);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    opacity: 0;
    transform: translateY(20px) scale(0.95);
    pointer-events: none;
    transition: opacity 0.35s cubic-bezier(0.16,1,0.3,1), transform 0.35s cubic-bezier(0.16,1,0.3,1);
}
#bk-chat-panel.open {
    opacity: 1;
    transform: translateY(0) scale(1);
    pointer-events: auto;
}

/* Header */
.bk-chat-header {
    background: linear-gradient(135deg, var(--color-brand-blue-dark) 0%, #0a2a6e 100%);
    padding: 1.25rem 1.5rem;
    display: flex;
    align-items: center;
    gap: 1rem;
    flex-shrink: 0;
}
.bk-chat-avatar {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: rgba(255,255,255,0.15);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.4rem;
    flex-shrink: 0;
    border: 2px solid rgba(255,255,255,0.25);
}
.bk-chat-header-info h4 {
    color: #fff;
    font-size: 1rem;
    font-weight: 700;
    margin: 0 0 0.2rem;
}
.bk-chat-header-info span {
    color: rgba(255,255,255,0.7);
    font-size: 0.78rem;
    display: flex;
    align-items: center;
    gap: 0.4rem;
}
.bk-status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: #22c55e;
    flex-shrink: 0;
    animation: pulseGreen 2s infinite;
}
@keyframes pulseGreen {
    0%,100% { opacity: 1; }
    50%      { opacity: 0.5; }
}

/* Messages Area */
.bk-chat-messages {
    flex: 1;
    overflow-y: auto;
    padding: 1.25rem;
    display: flex;
    flex-direction: column;
    gap: 0.85rem;
    scroll-behavior: smooth;
}
.bk-chat-messages::-webkit-scrollbar { width: 4px; }
.bk-chat-messages::-webkit-scrollbar-thumb { background: rgba(1,15,45,0.15); border-radius: 2px; }

/* Messages */
.bk-msg {
    display: flex;
    gap: 0.6rem;
    align-items: flex-end;
    animation: msgIn 0.3s ease;
}
@keyframes msgIn {
    from { opacity: 0; transform: translateY(8px); }
    to   { opacity: 1; transform: translateY(0); }
}
.bk-msg.user { flex-direction: row-reverse; }

.bk-msg-avatar {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--color-brand-blue-dark), #0a2a6e);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.85rem;
    flex-shrink: 0;
}
.bk-msg-bubble {
    max-width: 78%;
    padding: 0.75rem 1rem;
    border-radius: 16px;
    font-size: 0.875rem;
    line-height: 1.6;
}
.bk-msg.bot .bk-msg-bubble {
    background: var(--color-gray-50, #f8f9fa);
    border: 1px solid rgba(1,15,45,0.08);
    color: #1a2340;
    border-bottom-left-radius: 4px;
}
.bk-msg.user .bk-msg-bubble {
    background: linear-gradient(135deg, var(--color-brand-blue-dark), #0a2a6e);
    color: #fff;
    border-bottom-right-radius: 4px;
}

/* Typing indicator */
.bk-typing {
    display: flex;
    gap: 4px;
    align-items: center;
    padding: 0.75rem 1rem;
}
.bk-typing span {
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: var(--color-brand-blue-dark, #010f2d);
    opacity: 0.4;
    animation: typingBounce 1.2s infinite;
}
.bk-typing span:nth-child(2) { animation-delay: 0.2s; }
.bk-typing span:nth-child(3) { animation-delay: 0.4s; }
@keyframes typingBounce {
    0%,60%,100% { transform: translateY(0); opacity: 0.4; }
    30%          { transform: translateY(-6px); opacity: 1; }
}

/* Quick Replies */
.bk-quick-replies {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    padding: 0 1.25rem 0.75rem;
}
.bk-qr-btn {
    background: none;
    border: 1px solid rgba(1,15,45,0.2);
    border-radius: 100px;
    padding: 0.4rem 1rem;
    font-size: 0.78rem;
    font-weight: 600;
    color: var(--color-brand-blue-dark, #010f2d);
    cursor: pointer;
    transition: all 0.2s ease;
    font-family: inherit;
    white-space: nowrap;
}
.bk-qr-btn:hover {
    background: var(--color-brand-blue-dark, #010f2d);
    color: #fff;
    border-color: transparent;
}

/* Input Area */
.bk-chat-input {
    display: flex;
    gap: 0.6rem;
    padding: 1rem 1.25rem;
    border-top: 1px solid rgba(1,15,45,0.08);
    flex-shrink: 0;
    background: #fff;
}
.bk-chat-input input {
    flex: 1;
    border: 1px solid rgba(1,15,45,0.15);
    border-radius: 100px;
    padding: 0.65rem 1.2rem;
    font-size: 0.875rem;
    font-family: inherit;
    outline: none;
    transition: border-color 0.2s;
    color: #1a2340;
    background: #f8f9fa;
}
.bk-chat-input input:focus {
    border-color: var(--color-brand-blue-dark, #010f2d);
    background: #fff;
}
.bk-chat-input input::placeholder { color: #9ca3af; }
.bk-send-btn {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    border: none;
    background: var(--color-brand-red, #de1d25);
    color: #fff;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    flex-shrink: 0;
    transition: transform 0.2s, background 0.2s;
}
.bk-send-btn:hover { transform: scale(1.1); background: #c01820; }

/* Footer note */
.bk-chat-footer {
    text-align: center;
    padding: 0.5rem;
    font-size: 0.7rem;
    color: #9ca3af;
    border-top: 1px solid rgba(1,15,45,0.05);
    background: #fafafa;
}

@media (max-width: 480px) {
    #bk-chat-panel { width: calc(100vw - 2rem); right: 1rem; bottom: 9rem; }
    #bk-chat-toggle { right: 1rem; bottom: 5rem; }
}