/**
 * KoKI Chatbot - Frontend Widget Styles
 *
 * Schwebendes Chat-Widget (unten rechts) mit KoKI-Branding.
 * Responsiv und mobilfreundlich.
 */

/* =====================================================================
   CSS-Variablen
   ===================================================================== */
:root {
    --koki-primary: #2563eb;
    --koki-primary-dark: #1d4ed8;
    --koki-primary-light: #3b82f6;
    --koki-bg: #ffffff;
    --koki-bg-secondary: #f8fafc;
    --koki-text: #1e293b;
    --koki-text-secondary: #64748b;
    --koki-border: #e2e8f0;
    --koki-user-bg: #2563eb;
    --koki-user-text: #ffffff;
    --koki-assistant-bg: #f1f5f9;
    --koki-assistant-text: #1e293b;
    --koki-shadow: 0 10px 40px rgba(0, 0, 0, 0.15);
    --koki-radius: 12px;
    --koki-z-index: 99999;
}

/* =====================================================================
   Widget-Container
   ===================================================================== */
#koki-chatbot-widget {
    position: fixed;
    bottom: 20px;
    right: 20px;
    z-index: var(--koki-z-index);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    font-size: 14px;
    line-height: 1.5;
}

/* =====================================================================
   Chat-Button (Toggle)
   ===================================================================== */
#koki-chat-toggle {
    position: relative;
    width: 60px;
    height: 60px;
    border-radius: 50%;
    border: none;
    background: var(--koki-primary);
    color: white;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 20px color-mix(in srgb, var(--koki-primary) 40%, transparent);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    z-index: calc(var(--koki-z-index) + 1);
}

#koki-chat-toggle:hover {
    transform: scale(1.05);
    box-shadow: 0 6px 25px color-mix(in srgb, var(--koki-primary) 45%, transparent);
}

#koki-chat-toggle.koki-open {
    background: var(--koki-primary);
    filter: brightness(0.9);
}

/* Badge fuer neue Nachrichten */
#koki-chat-badge {
    position: absolute;
    top: -2px;
    right: -2px;
    width: 20px;
    height: 20px;
    background: #ef4444;
    color: white;
    border-radius: 50%;
    font-size: 12px;
    font-weight: bold;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* =====================================================================
   Chat-Panel
   ===================================================================== */
#koki-chat-panel {
    position: absolute;
    bottom: 75px;
    right: 0;
    width: 380px;
    max-width: calc(100vw - 40px);
    height: 520px;
    max-height: calc(100vh - 120px);
    background: var(--koki-bg);
    border-radius: var(--koki-radius);
    box-shadow: var(--koki-shadow);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    border: 1px solid var(--koki-border);
}

/* =====================================================================
   Kopfzeile
   ===================================================================== */
#koki-chat-header {
    background: var(--koki-primary);
    color: white;
    padding: 14px 16px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-shrink: 0;
}

#koki-chat-title-area {
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 600;
    font-size: 15px;
}

#koki-chat-close {
    background: none;
    border: none;
    color: white;
    cursor: pointer;
    padding: 4px;
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.2s;
}

#koki-chat-close:hover {
    background: rgba(255, 255, 255, 0.2);
}

/* =====================================================================
   Nachrichtenbereich
   ===================================================================== */
#koki-chat-messages {
    flex: 1;
    overflow-y: auto;
    padding: 16px;
    background: var(--koki-bg-secondary);
}

/* Einzelne Nachricht */
.koki-msg {
    display: flex;
    margin-bottom: 12px;
    gap: 8px;
    animation: koki-fade-in 0.3s ease;
}

@keyframes koki-fade-in {
    from { opacity: 0; transform: translateY(8px); }
    to { opacity: 1; transform: translateY(0); }
}

.koki-msg-user {
    flex-direction: row-reverse;
}

.koki-msg-avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: var(--koki-primary);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.koki-msg-content {
    max-width: 80%;
    padding: 10px 14px;
    border-radius: 12px;
    word-wrap: break-word;
    overflow-wrap: break-word;
}

.koki-msg-content p {
    margin: 0;
    white-space: pre-wrap;
}

/* Benutzer-Nachricht */
.koki-msg-user .koki-msg-content {
    background: var(--koki-primary);
    color: var(--koki-user-text);
    border-bottom-right-radius: 4px;
}

/* Assistent-Nachricht */
.koki-msg-assistant .koki-msg-content {
    background: var(--koki-assistant-bg);
    color: var(--koki-assistant-text);
    border-bottom-left-radius: 4px;
}

/* =====================================================================
   Tipp-Indikator
   ===================================================================== */
#koki-typing-indicator {
    padding: 4px 16px;
    background: var(--koki-bg-secondary);
}

.koki-typing {
    display: flex;
    gap: 4px;
    padding: 8px 14px;
}

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

.koki-typing span:nth-child(1) { animation-delay: 0s; }
.koki-typing span:nth-child(2) { animation-delay: 0.2s; }
.koki-typing span:nth-child(3) { animation-delay: 0.4s; }

@keyframes koki-bounce {
    0%, 80%, 100% { transform: scale(0.6); opacity: 0.4; }
    40% { transform: scale(1); opacity: 1; }
}

/* =====================================================================
   Eingabebereich
   ===================================================================== */
#koki-chat-input-area {
    display: flex;
    align-items: flex-end;
    gap: 8px;
    padding: 12px 16px;
    border-top: 1px solid var(--koki-border);
    background: var(--koki-bg);
    flex-shrink: 0;
}

#koki-chat-input {
    flex: 1;
    border: 1px solid var(--koki-border);
    border-radius: 8px;
    padding: 8px 12px;
    font-size: 14px;
    font-family: inherit;
    resize: none;
    max-height: 120px;
    line-height: 1.4;
    outline: none;
    transition: border-color 0.2s;
}

#koki-chat-input:focus {
    border-color: var(--koki-primary);
    box-shadow: 0 0 0 2px color-mix(in srgb, var(--koki-primary) 12%, transparent);
}

#koki-chat-send {
    width: 40px;
    height: 40px;
    border-radius: 8px;
    border: none;
    background: var(--koki-primary);
    color: white;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.2s;
    flex-shrink: 0;
}

#koki-chat-send:hover {
    background: var(--koki-primary);
    filter: brightness(0.92);
}

#koki-chat-send:disabled {
    background: var(--koki-text-secondary);
    cursor: not-allowed;
}

/* =====================================================================
   Fusszeile
   ===================================================================== */
#koki-chat-footer {
    padding: 6px 16px;
    text-align: center;
    font-size: 11px;
    color: var(--koki-text-secondary);
    border-top: 1px solid var(--koki-border);
    background: var(--koki-bg);
    flex-shrink: 0;
}

/* =====================================================================
   Scrollbar-Styling
   ===================================================================== */
#koki-chat-messages::-webkit-scrollbar {
    width: 6px;
}

#koki-chat-messages::-webkit-scrollbar-track {
    background: transparent;
}

#koki-chat-messages::-webkit-scrollbar-thumb {
    background: var(--koki-border);
    border-radius: 3px;
}

#koki-chat-messages::-webkit-scrollbar-thumb:hover {
    background: var(--koki-text-secondary);
}

/* =====================================================================
   Responsive (Mobil)
   ===================================================================== */
@media (max-width: 480px) {
    #koki-chatbot-widget {
        bottom: 10px;
        right: 10px;
    }

    #koki-chat-panel {
        width: calc(100vw - 20px);
        height: calc(100vh - 90px);
        max-height: calc(100vh - 90px);
        bottom: 70px;
        right: -5px;
        border-radius: 12px 12px 0 0;
    }

    #koki-chat-toggle {
        width: 52px;
        height: 52px;
    }

    .koki-msg-content {
        max-width: 85%;
    }
}