* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: "Segoe UI", sans-serif;
}

body {
    background-color: #0b0f1a;
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
}

.page-wrapper {
    width: 100%;
    display: flex;
    justify-content: center;
}

.chat-container {
    width: 420px;
    height: 680px;
    background-color: #ffffff;
    border-radius: 16px;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

/* ── Header ──────────────────────────────────────────────────────── */
.chat-header {
    background: #111827;
    color: white;
    padding: 16px 18px 12px;
    text-align: center;
}

.chat-header h2 {
    font-size: 18px;
    font-weight: 600;
}

.chat-subtitle {
    font-size: 12px;
    color: #9ca3af;
    margin-top: 3px;
}

/* ── Message list ─────────────────────────────────────────────────── */
.chat-box {
    flex: 1;
    padding: 20px;
    overflow-y: auto;
    background: #f5f7fa;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.message {
    max-width: 75%;
    padding: 12px 16px;
    border-radius: 14px;
    font-size: 14px;
    line-height: 1.5;
    word-break: break-word;
    white-space: pre-wrap;   /* preserve line breaks in agent replies */
}

.user-message {
    align-self: flex-end;
    background-color: #111827;
    color: white;
    border-bottom-right-radius: 4px;
}

.bot-message {
    align-self: flex-start;
    background-color: #e5e7eb;
    color: #111827;
    border-bottom-left-radius: 4px;
}

.error-message {
    align-self: flex-start;
    background-color: #fee2e2;
    color: #b91c1c;
    border-bottom-left-radius: 4px;
    font-size: 13px;
}

/* Inline image in chat bubble */
.chat-image {
    max-width: 100%;
    max-height: 200px;
    border-radius: 10px;
    display: block;
}

/* ── Typing indicator ─────────────────────────────────────────────── */
.typing-indicator {
    display: flex;
    align-items: center;
    gap: 5px;
    padding: 10px 20px;
    background: #f5f7fa;
}

.typing-indicator.hidden {
    display: none;
}

.typing-indicator span {
    width: 8px;
    height: 8px;
    background: #9ca3af;
    border-radius: 50%;
    animation: bounce 1.2s infinite;
}

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

@keyframes bounce {
    0%, 60%, 100% { transform: translateY(0); }
    30%           { transform: translateY(-6px); }
}

/* ── Image preview bar ────────────────────────────────────────────── */
.image-preview-bar {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 15px;
    background: #f0f0f0;
    border-top: 1px solid #ddd;
}

.image-preview-bar.hidden {
    display: none;
}

.image-preview-bar img {
    height: 60px;
    border-radius: 8px;
    object-fit: cover;
}

.image-preview-bar button {
    background: #e74c3c;
    color: white;
    border: none;
    border-radius: 50%;
    width: 24px;
    height: 24px;
    font-size: 14px;
    cursor: pointer;
    line-height: 1;
}

/* ── Input row ───────────────────────────────────────────────────── */
.chat-input-container {
    display: flex;
    align-items: center;
    padding: 15px;
    background: #ffffff;
    border-top: 1px solid #ddd;
    gap: 8px;
}

.chat-input-container input[type="text"] {
    flex: 1;
    padding: 12px;
    border-radius: 10px;
    border: 1px solid #ccc;
    outline: none;
    font-size: 14px;
}

.chat-input-container input[type="text"]:focus {
    border-color: #111827;
}

.chat-input-container button {
    padding: 12px 14px;
    border-radius: 10px;
    border: none;
    background-color: #111827;
    color: white;
    cursor: pointer;
    font-size: 16px;
    white-space: nowrap;
    transition: background 0.2s;
}

.chat-input-container button:hover {
    background-color: #1f2937;
}

.chat-input-container button:disabled {
    background-color: #6b7280;
    cursor: not-allowed;
}