frontend/src/components/ChatPanel.css

/* ── ChatPanel ────────────────────────────── */
.chat-panel {
    display: flex;
    flex-direction: column;
    flex: 1;
    min-width: 0;
    height: 100vh;
}

/* ── Header ── */
.chat-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.85rem 1.5rem;
    background: var(--glass);
    border-bottom: 1px solid var(--glass-border);
    backdrop-filter: blur(20px) saturate(1.6);
    -webkit-backdrop-filter: blur(20px) saturate(1.6);
    position: relative;
    z-index: 10;
}

.chat-title {
    display: flex;
    align-items: center;
    gap: 0.65rem;
}

.chat-logo {
    width: 32px;
    height: 32px;
    border-radius: 8px;
    background: linear-gradient(135deg, var(--accent), var(--accent-2));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    box-shadow: 0 0 16px var(--accent-glow);
}

.chat-title h1 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-1);
    margin: 0;
    letter-spacing: -0.01em;
}

.chat-header-actions {
    display: flex;
    align-items: center;
    gap: 0.6rem;
}

.icon-btn {
    background: var(--glass);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-sm);
    color: var(--text-3);
    padding: 0.4rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    transition: all 0.2s ease;
}

.icon-btn:hover {
    background: var(--hover-bg);
    color: var(--text-2);
    border-color: var(--hover-border);
}

.danger-btn:hover {
    background: rgba(248, 113, 113, 0.1);
    color: var(--danger);
    border-color: rgba(248, 113, 113, 0.2);
}

.status-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    font-size: 0.72rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    padding: 0.3rem 0.65rem;
    border-radius: 100px;
    background: rgba(52, 211, 153, 0.08);
    border: 1px solid rgba(52, 211, 153, 0.15);
}

.status-badge.disconnected {
    background: rgba(248, 113, 113, 0.08);
    border-color: rgba(248, 113, 113, 0.15);
}

/* ── Messages ── */
.messages-container {
    flex: 1;
    overflow-y: auto;
    padding: 1.5rem 2rem 1rem;
    max-width: 960px;
    margin: 0 auto;
    width: 100%;
}

/* ── Empty state ── */
.empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100%;
    text-align: center;
    gap: 0.3rem;
    animation: fadeIn 0.5s ease;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(12px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.empty-icon {
    width: 72px;
    height: 72px;
    border-radius: 20px;
    background: linear-gradient(135deg, rgba(109, 92, 255, 0.12), rgba(56, 189, 248, 0.12));
    border: 1px solid rgba(109, 92, 255, 0.15);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    margin-bottom: 0.75rem;
    box-shadow: 0 0 40px rgba(109, 92, 255, 0.1);
}

.empty-state h2 {
    font-size: 1.6rem;
    font-weight: 700;
    color: var(--text-1);
    margin: 0;
    letter-spacing: -0.02em;
}

.empty-state p {
    max-width: 380px;
    font-size: 0.88rem;
    line-height: 1.55;
    color: var(--text-2);
    margin: 0.15rem 0 1.25rem;
}

.example-queries {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    justify-content: center;
}

.example-queries button {
    background: var(--glass);
    border: 1px solid var(--glass-border);
    border-radius: 100px;
    color: var(--text-2);
    padding: 0.5rem 1rem;
    font-size: 0.8rem;
    font-family: inherit;
    cursor: pointer;
    transition: all 0.25s ease;
    white-space: nowrap;
}

.example-queries button:hover {
    background: rgba(109, 92, 255, 0.1);
    border-color: rgba(109, 92, 255, 0.25);
    color: var(--text-1);
    transform: translateY(-1px);
    box-shadow: 0 4px 16px rgba(109, 92, 255, 0.12);
}

/* ── Thinking ── */
.thinking-indicator {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--accent);
    font-size: 0.82rem;
    font-weight: 500;
    padding: 0.6rem 1rem;
    background: rgba(109, 92, 255, 0.06);
    border: 1px solid rgba(109, 92, 255, 0.12);
    border-radius: 100px;
    margin-bottom: 0.75rem;
    animation: fadeIn 0.3s ease;
}

.spin {
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

/* ── Input bar ── */
.input-bar {
    display: flex;
    align-items: flex-end;
    gap: 0.6rem;
    padding: 0.85rem 2rem 1.1rem;
    background: var(--glass);
    border-top: 1px solid var(--glass-border);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    max-width: 960px;
    margin: 0 auto;
    width: 100%;
}

.input-bar textarea {
    flex: 1;
    resize: none;
    border: 1px solid var(--glass-border);
    border-radius: var(--radius);
    background: var(--input-bg);
    color: var(--text-1);
    padding: 0.7rem 1rem;
    font-size: 0.9rem;
    font-family: inherit;
    line-height: 1.45;
    outline: none;
    transition: all 0.25s ease;
}

.input-bar textarea:focus {
    border-color: rgba(109, 92, 255, 0.4);
    box-shadow: 0 0 0 3px rgba(109, 92, 255, 0.08);
    background: var(--input-focus-bg);
}

.input-bar textarea::placeholder {
    color: var(--text-3);
}

.input-bar textarea:disabled {
    opacity: 0.35;
    cursor: not-allowed;
}

.send-btn {
    flex-shrink: 0;
    width: 2.6rem;
    height: 2.6rem;
    display: flex;
    align-items: center;
    justify-content: center;
    border: none;
    border-radius: var(--radius);
    background: linear-gradient(135deg, var(--accent), #8b5cf6);
    color: #fff;
    cursor: pointer;
    transition: all 0.25s ease;
    box-shadow: 0 2px 12px var(--accent-glow);
}

.send-btn:hover:not(:disabled) {
    filter: brightness(1.15);
    transform: translateY(-1px);
    box-shadow: 0 4px 20px var(--accent-glow);
}

.send-btn:active:not(:disabled) {
    transform: translateY(0);
}

.send-btn:disabled {
    opacity: 0.3;
    cursor: not-allowed;
    box-shadow: none;
}

.empty-warning {
    font-size: 0.78rem !important;
    color: var(--text-3) !important;
    opacity: 0.8;
    margin-top: -0.5rem !important;
}