/* ==========================================================================
   COMPONENT: chat-demo
   --------------------------------------------------------------------------
   Animated WhatsApp-style chat preview used in the Hero "right column" and
   embedded in step demos. Fronted by JS that adds messages over time and
   plays a typing indicator.

   Two visual chassis:
     .e-chat-demo                — generic phone-frame chat (current Hero)
     .e-chat-demo--browser       — desktop browser-frame chat

   The DOM expected by the chat-demo.js helper is documented in
   wwwroot/js/chat-demo.js.
   ========================================================================== */

.e-chat-demo {
    width: 100%;
    max-width: 100%;
    display: flex;
    flex-direction: column;
    gap: var(--e-space-xs);
    position: relative;
    transition: transform var(--e-transition-slow), opacity var(--e-transition-slow);
}

.e-chat-demo__placeholder {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 1;
    transition: opacity var(--e-transition-base);
    z-index: var(--e-z-content);
}

.e-chat-demo__placeholder img {
    width: 180px;
    height: auto;
    opacity: 0.15;
    animation: e-chat-pulse 2s ease-in-out infinite;
}

@keyframes e-chat-pulse {
    0%, 100% { opacity: 0.12; transform: scale(1); }
    50%      { opacity: 0.20; transform: scale(1.02); }
}

.e-chat-demo__window {
    background: var(--e-color-surface);
    border-radius: var(--e-radius-lg);
    box-shadow:
        0 15px 50px rgba(28, 145, 228, 0.12),
        0 5px 20px  rgba(0, 0, 0, 0.06);
    overflow: hidden;
    opacity: 0.9;
    transform: translateX(50px);
    transition: transform var(--e-transition-slow), opacity var(--e-transition-slow);
}

.e-chat-demo__window:hover { opacity: 1; }

.e-chat-demo--visible .e-chat-demo__placeholder { opacity: 0; pointer-events: none; }
.e-chat-demo--visible .e-chat-demo__window      { opacity: 1; transform: translateX(0); }


/* HEADER */

.e-chat-demo__header {
    background: #f8fafc;
    padding: var(--e-space-xs) var(--e-space-sm);
    display: flex;
    align-items: center;
    gap: var(--e-space-xs);
    border-bottom: var(--e-border-light);
}

.e-chat-demo__avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: var(--e-text-on-dark);
    font-weight: var(--e-font-weight-bold);
    font-size: var(--e-font-size-sm);
}

.e-chat-demo__contact {
    display: flex;
    flex-direction: column;
}

.e-chat-demo__contact-name {
    font-weight: var(--e-font-weight-bold);
    font-size: var(--e-font-size-sm);
    color: #374151;
}

.e-chat-demo__contact-meta {
    color: #6b7280;
    font-size: var(--e-font-size-sm);
}

.e-chat-demo__badge {
    margin-left: auto;
    font-weight: var(--e-font-weight-medium);
    background: #10b981;
    color: var(--e-text-on-dark);
    padding: var(--e-space-xs);
    border-radius: var(--e-radius-md);
    font-size: var(--e-font-size-xs);
}


/* MESSAGES */

.e-chat-demo__messages {
    position: relative;
    padding: var(--e-space-sm);
    display: flex;
    flex-direction: column;
    gap: var(--e-space-xs);
    background: #f8fafc;
    min-height: 550px;
}

.e-chat-bubble {
    display: flex;
    flex-direction: column;
    max-width: 85%;
    transition: opacity var(--e-transition-base), transform var(--e-transition-base);
}

.e-chat-bubble--hidden {
    opacity: 0;
    transform: translateY(10px);
    visibility: hidden;
}

.e-chat-bubble__head {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 0 var(--e-space-xs) var(--e-space-xs);
    font-size: var(--e-font-size-xs);
}

.e-chat-bubble__avatar {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    object-fit: cover;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: var(--e-font-weight-bold);
    font-size: var(--e-font-size-xs);
    color: var(--e-text-on-dark);
}

.e-chat-bubble__content {
    padding: var(--e-space-xs);
    border-radius: var(--e-radius-lg);
    line-height: var(--e-leading-snug);
    font-size: var(--e-font-size-xs);
}

.e-chat-bubble__meta {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 6px var(--e-space-xs) 0;
    font-size: var(--e-font-size-xs);
    color: #94a3b8;
    opacity: 0.5;
}


/* OUTBOUND BUBBLE (eesier message — right) */

.e-chat-bubble--outbound {
    align-self: flex-end;
    align-items: flex-end;
}

.e-chat-bubble--outbound .e-chat-bubble__avatar {
    border-radius: 0;
}

.e-chat-bubble--outbound .e-chat-bubble__content {
    background: linear-gradient(135deg, var(--e-color-secondary) 0%, var(--e-color-primary) 100%);
    color: var(--e-text-on-dark);
    box-shadow: var(--e-shadow-glow-blue);
}


/* INBOUND BUBBLE (lead message — left) */

.e-chat-bubble--inbound {
    align-self: flex-start;
    align-items: flex-start;
    font-weight: var(--e-font-weight-medium);
}

.e-chat-bubble--inbound .e-chat-bubble__avatar {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.e-chat-bubble--inbound .e-chat-bubble__content {
    background: var(--e-color-surface);
    color: var(--e-color-muted-soft);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.06);
    border: 1px solid rgba(102, 126, 234, 0.10);
}